Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6

author: Patrick McHardy <kaber@trash.net> 2011-04-13 13:32:28 +0200
committer: Patrick McHardy <kaber@trash.net> 2011-04-13 13:32:28 +0200
commit: b32e3dc7860d00124fa432dba09667e647cb9bcc (patch)
tree: 2fa6e56f389431dfb84609d3d7572cad76e88e71 /fs
parent: 6604271c5bc658a6067ed0c3deba4d89e0e50382 (diff)
parent: 96120d86fe302c006259baee9061eea9e1b9e486 (diff)
download: op-kernel-dev-b32e3dc7860d00124fa432dba09667e647cb9bcc.zip
op-kernel-dev-b32e3dc7860d00124fa432dba09667e647cb9bcc.tar.gz
370 files changed, 11446 insertions, 6793 deletions
diff --git a/fs/9p/acl.c b/fs/9p/acl.c
index 5154552..535ab6e 100644
--- a/fs/9p/acl.c
+++ b/fs/9p/acl.c
@@ -262,7 +262,7 @@ static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name,
 	if (strcmp(name, "") != 0)
 		return -EINVAL;
 
-	v9ses = v9fs_inode2v9ses(dentry->d_inode);
+	v9ses = v9fs_dentry2v9ses(dentry);
 	/*
 	 * We allow set/get/list of acl when access=client is not specified
 	 */
@@ -312,7 +312,7 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
 	if (strcmp(name, "") != 0)
 		return -EINVAL;
 
-	v9ses = v9fs_inode2v9ses(dentry->d_inode);
+	v9ses = v9fs_dentry2v9ses(dentry);
 	/*
 	 * set the attribute on the remote. Without even looking at the
 	 * xattr value. We leave it to the server to validate
@@ -323,7 +323,7 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
 
 	if (S_ISLNK(inode->i_mode))
 		return -EOPNOTSUPP;
-	if (!is_owner_or_cap(inode))
+	if (!inode_owner_or_capable(inode))
 		return -EPERM;
 	if (value) {
 		/* update the cached acl value */
diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index cd63e00..0ee5945 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -134,7 +134,7 @@ static struct p9_fid *v9fs_fid_lookup_with_uid(struct dentry *dentry,
 	struct v9fs_session_info *v9ses;
 	struct p9_fid *fid, *old_fid = NULL;
 
-	v9ses = v9fs_inode2v9ses(dentry->d_inode);
+	v9ses = v9fs_dentry2v9ses(dentry);
 	access = v9ses->flags & V9FS_ACCESS_MASK;
 	fid = v9fs_fid_find(dentry, uid, any);
 	if (fid)
@@ -237,7 +237,7 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
 	int  any, access;
 	struct v9fs_session_info *v9ses;
 
-	v9ses = v9fs_inode2v9ses(dentry->d_inode);
+	v9ses = v9fs_dentry2v9ses(dentry);
 	access = v9ses->flags & V9FS_ACCESS_MASK;
 	switch (access) {
 	case V9FS_ACCESS_SINGLE:
@@ -286,9 +286,11 @@ static struct p9_fid *v9fs_fid_clone_with_uid(struct dentry *dentry, uid_t uid)
 
 struct p9_fid *v9fs_writeback_fid(struct dentry *dentry)
 {
-	int err;
+	int err, flags;
 	struct p9_fid *fid;
+	struct v9fs_session_info *v9ses;
 
+	v9ses = v9fs_dentry2v9ses(dentry);
 	fid = v9fs_fid_clone_with_uid(dentry, 0);
 	if (IS_ERR(fid))
 		goto error_out;
@@ -297,8 +299,17 @@ struct p9_fid *v9fs_writeback_fid(struct dentry *dentry)
 	 * dirty pages. We always request for the open fid in read-write
 	 * mode so that a partial page write which result in page
 	 * read can work.
+	 *
+	 * we don't have a tsyncfs operation for older version
+	 * of protocol. So make sure the write back fid is
+	 * opened in O_SYNC mode.
 	 */
-	err = p9_client_open(fid, O_RDWR);
+	if (!v9fs_proto_dotl(v9ses))
+		flags = O_RDWR | O_SYNC;
+	else
+		flags = O_RDWR;
+
+	err = p9_client_open(fid, flags);
 	if (err < 0) {
 		p9_client_clunk(fid);
 		fid = ERR_PTR(err);
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index bd8496d..9665c2b 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -130,6 +130,7 @@ struct v9fs_inode {
 #endif
 	unsigned int cache_validity;
 	struct p9_fid *writeback_fid;
+	struct mutex v_mutex;
 	struct inode vfs_inode;
 };
 
@@ -173,6 +174,11 @@ static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode)
 	return (inode->i_sb->s_fs_info);
 }
 
+static inline struct v9fs_session_info *v9fs_dentry2v9ses(struct dentry *dentry)
+{
+	return dentry->d_sb->s_fs_info;
+}
+
 static inline int v9fs_proto_dotu(struct v9fs_session_info *v9ses)
 {
 	return v9ses->flags & V9FS_PROTO_2000U;
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 78bcb97..ffed558 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -90,7 +90,9 @@ int v9fs_file_open(struct inode *inode, struct file *file)
 	}
 
 	file->private_data = fid;
-	if (v9ses->cache && !v9inode->writeback_fid) {
+	mutex_lock(&v9inode->v_mutex);
+	if (v9ses->cache && !v9inode->writeback_fid &&
+	    ((file->f_flags & O_ACCMODE) != O_RDONLY)) {
 		/*
 		 * clone a fid and add it to writeback_fid
 		 * we do it during open time instead of
@@ -101,10 +103,12 @@ int v9fs_file_open(struct inode *inode, struct file *file)
 		fid = v9fs_writeback_fid(file->f_path.dentry);
 		if (IS_ERR(fid)) {
 			err = PTR_ERR(fid);
+			mutex_unlock(&v9inode->v_mutex);
 			goto out_error;
 		}
 		v9inode->writeback_fid = (void *) fid;
 	}
+	mutex_unlock(&v9inode->v_mutex);
 #ifdef CONFIG_9P_FSCACHE
 	if (v9ses->cache)
 		v9fs_cache_inode_set_cookie(inode, file);
@@ -504,9 +508,12 @@ v9fs_file_write(struct file *filp, const char __user * data,
 	if (!count)
 		goto out;
 
-	return v9fs_file_write_internal(filp->f_path.dentry->d_inode,
+	retval = v9fs_file_write_internal(filp->f_path.dentry->d_inode,
 					filp->private_data,
-					data, count, offset, 1);
+					data, count, &origin, 1);
+	/* update offset on successful write */
+	if (retval > 0)
+		*offset = origin;
 out:
 	return retval;
 }
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 8a2c232..7f6c677 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -221,6 +221,7 @@ struct inode *v9fs_alloc_inode(struct super_block *sb)
 #endif
 	v9inode->writeback_fid = NULL;
 	v9inode->cache_validity = 0;
+	mutex_init(&v9inode->v_mutex);
 	return &v9inode->vfs_inode;
 }
 
@@ -650,7 +651,9 @@ v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode,
 	/* if we are opening a file, assign the open fid to the file */
 	if (nd && nd->flags & LOOKUP_OPEN) {
 		v9inode = V9FS_I(dentry->d_inode);
-		if (v9ses->cache && !v9inode->writeback_fid) {
+		mutex_lock(&v9inode->v_mutex);
+		if (v9ses->cache && !v9inode->writeback_fid &&
+		    ((flags & O_ACCMODE) != O_RDONLY)) {
 			/*
 			 * clone a fid and add it to writeback_fid
 			 * we do it during open time instead of
@@ -661,10 +664,12 @@ v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode,
 			inode_fid = v9fs_writeback_fid(dentry);
 			if (IS_ERR(inode_fid)) {
 				err = PTR_ERR(inode_fid);
+				mutex_unlock(&v9inode->v_mutex);
 				goto error;
 			}
 			v9inode->writeback_fid = (void *) inode_fid;
 		}
+		mutex_unlock(&v9inode->v_mutex);
 		filp = lookup_instantiate_filp(nd, dentry, generic_file_open);
 		if (IS_ERR(filp)) {
 			err = PTR_ERR(filp);
@@ -931,7 +936,7 @@ v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
 
 	P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry);
 	err = -EPERM;
-	v9ses = v9fs_inode2v9ses(dentry->d_inode);
+	v9ses = v9fs_dentry2v9ses(dentry);
 	if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
 		generic_fillattr(dentry->d_inode, stat);
 		return 0;
@@ -967,8 +972,12 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
 	struct p9_wstat wstat;
 
 	P9_DPRINTK(P9_DEBUG_VFS, "\n");
+	retval = inode_change_ok(dentry->d_inode, iattr);
+	if (retval)
+		return retval;
+
 	retval = -EPERM;
-	v9ses = v9fs_inode2v9ses(dentry->d_inode);
+	v9ses = v9fs_dentry2v9ses(dentry);
 	fid = v9fs_fid_lookup(dentry);
 	if(IS_ERR(fid))
 		return PTR_ERR(fid);
@@ -993,12 +1002,7 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
 		if (iattr->ia_valid & ATTR_GID)
 			wstat.n_gid = iattr->ia_gid;
 	}
-	if ((iattr->ia_valid & ATTR_SIZE) &&
-	    iattr->ia_size != i_size_read(dentry->d_inode)) {
-		retval = vmtruncate(dentry->d_inode, iattr->ia_size);
-		if (retval)
-			return retval;
-	}
+
 	/* Write all dirty data */
 	if (S_ISREG(dentry->d_inode->i_mode))
 		filemap_write_and_wait(dentry->d_inode->i_mapping);
@@ -1006,6 +1010,11 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
 	retval = p9_client_wstat(fid, &wstat);
 	if (retval < 0)
 		return retval;
+
+	if ((iattr->ia_valid & ATTR_SIZE) &&
+	    iattr->ia_size != i_size_read(dentry->d_inode))
+		truncate_setsize(dentry->d_inode, iattr->ia_size);
+
 	v9fs_invalidate_inode_attr(dentry->d_inode);
 
 	setattr_copy(dentry->d_inode, iattr);
@@ -1130,7 +1139,7 @@ static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen)
 
 	P9_DPRINTK(P9_DEBUG_VFS, " %s\n", dentry->d_name.name);
 	retval = -EPERM;
-	v9ses = v9fs_inode2v9ses(dentry->d_inode);
+	v9ses = v9fs_dentry2v9ses(dentry);
 	fid = v9fs_fid_lookup(dentry);
 	if (IS_ERR(fid))
 		return PTR_ERR(fid);
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index 67c138e..ffbb113 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -245,7 +245,9 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
 	v9fs_set_create_acl(dentry, dacl, pacl);
 
 	v9inode = V9FS_I(inode);
-	if (v9ses->cache && !v9inode->writeback_fid) {
+	mutex_lock(&v9inode->v_mutex);
+	if (v9ses->cache && !v9inode->writeback_fid &&
+	    ((flags & O_ACCMODE) != O_RDONLY)) {
 		/*
 		 * clone a fid and add it to writeback_fid
 		 * we do it during open time instead of
@@ -256,10 +258,12 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
 		inode_fid = v9fs_writeback_fid(dentry);
 		if (IS_ERR(inode_fid)) {
 			err = PTR_ERR(inode_fid);
+			mutex_unlock(&v9inode->v_mutex);
 			goto error;
 		}
 		v9inode->writeback_fid = (void *) inode_fid;
 	}
+	mutex_unlock(&v9inode->v_mutex);
 	/* Since we are opening a file, assign the open fid to the file */
 	filp = lookup_instantiate_filp(nd, dentry, generic_file_open);
 	if (IS_ERR(filp)) {
@@ -391,7 +395,7 @@ v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry,
 
 	P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry);
 	err = -EPERM;
-	v9ses = v9fs_inode2v9ses(dentry->d_inode);
+	v9ses = v9fs_dentry2v9ses(dentry);
 	if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
 		generic_fillattr(dentry->d_inode, stat);
 		return 0;
@@ -448,17 +452,11 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
 	p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec;
 
 	retval = -EPERM;
-	v9ses = v9fs_inode2v9ses(dentry->d_inode);
+	v9ses = v9fs_dentry2v9ses(dentry);
 	fid = v9fs_fid_lookup(dentry);
 	if (IS_ERR(fid))
 		return PTR_ERR(fid);
 
-	if ((iattr->ia_valid & ATTR_SIZE) &&
-	    iattr->ia_size != i_size_read(dentry->d_inode)) {
-		retval = vmtruncate(dentry->d_inode, iattr->ia_size);
-		if (retval)
-			return retval;
-	}
 	/* Write all dirty data */
 	if (S_ISREG(dentry->d_inode->i_mode))
 		filemap_write_and_wait(dentry->d_inode->i_mapping);
@@ -466,8 +464,12 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
 	retval = p9_client_setattr(fid, &p9attr);
 	if (retval < 0)
 		return retval;
-	v9fs_invalidate_inode_attr(dentry->d_inode);
 
+	if ((iattr->ia_valid & ATTR_SIZE) &&
+	    iattr->ia_size != i_size_read(dentry->d_inode))
+		truncate_setsize(dentry->d_inode, iattr->ia_size);
+
+	v9fs_invalidate_inode_attr(dentry->d_inode);
 	setattr_copy(dentry->d_inode, iattr);
 	mark_inode_dirty(dentry->d_inode);
 	if (iattr->ia_valid & ATTR_MODE) {
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 09fd08d..f3eed33 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -262,7 +262,7 @@ static int v9fs_statfs(struct dentry *dentry, struct kstatfs *buf)
 		goto done;
 	}
 
-	v9ses = v9fs_inode2v9ses(dentry->d_inode);
+	v9ses = v9fs_dentry2v9ses(dentry);
 	if (v9fs_proto_dotl(v9ses)) {
 		res = p9_client_statfs(fid, &rs);
 		if (res == 0) {
diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index 2ff622f..718ac1f 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -50,6 +50,7 @@ struct adfs_sb_info {
 	gid_t		s_gid;		/* owner gid				 */
 	umode_t		s_owner_mask;	/* ADFS owner perm -> unix perm		 */
 	umode_t		s_other_mask;	/* ADFS other perm -> unix perm		 */
+	int		s_ftsuffix;	/* ,xyz hex filetype suffix option */
 
 	__u32		s_ids_per_zone;	/* max. no ids in one zone		 */
 	__u32		s_idlen;	/* length of ID in map			 */
@@ -79,6 +80,10 @@ struct adfs_dir {
 
 	int			nr_buffers;
 	struct buffer_head	*bh[4];
+
+	/* big directories need allocated buffers */
+	struct buffer_head	**bh_fplus;
+
 	unsigned int		pos;
 	unsigned int		parent_id;
 
@@ -89,7 +94,7 @@ struct adfs_dir {
 /*
  * This is the overall maximum name length
  */
-#define ADFS_MAX_NAME_LEN	256
+#define ADFS_MAX_NAME_LEN	(256 + 4) /* +4 for ,xyz hex filetype suffix */
 struct object_info {
 	__u32		parent_id;		/* parent object id	*/
 	__u32		file_id;		/* object id		*/
@@ -97,10 +102,26 @@ struct object_info {
 	__u32		execaddr;		/* execution address	*/
 	__u32		size;			/* size			*/
 	__u8		attr;			/* RISC OS attributes	*/
-	unsigned char	name_len;		/* name length		*/
+	unsigned int	name_len;		/* name length		*/
 	char		name[ADFS_MAX_NAME_LEN];/* file name		*/
+
+	/* RISC OS file type (12-bit: derived from loadaddr) */
+	__u16		filetype;
 };
 
+/* RISC OS 12-bit filetype converts to ,xyz hex filename suffix */
+static inline int append_filetype_suffix(char *buf, __u16 filetype)
+{
+	if (filetype == 0xffff)	/* no explicit 12-bit file type was set */
+		return 0;
+
+	*buf++ = ',';
+	*buf++ = hex_asc_lo(filetype >> 8);
+	*buf++ = hex_asc_lo(filetype >> 4);
+	*buf++ = hex_asc_lo(filetype >> 0);
+	return 4;
+}
+
 struct adfs_dir_ops {
 	int	(*read)(struct super_block *sb, unsigned int id, unsigned int sz, struct adfs_dir *dir);
 	int	(*setpos)(struct adfs_dir *dir, unsigned int fpos);
diff --git a/fs/adfs/dir_f.c b/fs/adfs/dir_f.c
index bafc712..4bbe853 100644
--- a/fs/adfs/dir_f.c
+++ b/fs/adfs/dir_f.c
@@ -52,7 +52,6 @@ static inline int adfs_readname(char *buf, char *ptr, int maxlen)
 			*buf++ = *ptr;
 		ptr++;
 	}
-	*buf = '\0';
 
 	return buf - old_buf;
 }
@@ -208,7 +207,8 @@ release_buffers:
  * convert a disk-based directory entry to a Linux ADFS directory entry
  */
 static inline void
-adfs_dir2obj(struct object_info *obj, struct adfs_direntry *de)
+adfs_dir2obj(struct adfs_dir *dir, struct object_info *obj,
+	struct adfs_direntry *de)
 {
 	obj->name_len =	adfs_readname(obj->name, de->dirobname, ADFS_F_NAME_LEN);
 	obj->file_id  = adfs_readval(de->dirinddiscadd, 3);
@@ -216,6 +216,23 @@ adfs_dir2obj(struct object_info *obj, struct adfs_direntry *de)
 	obj->execaddr = adfs_readval(de->direxec, 4);
 	obj->size     = adfs_readval(de->dirlen,  4);
 	obj->attr     = de->newdiratts;
+	obj->filetype = -1;
+
+	/*
+	 * object is a file and is filetyped and timestamped?
+	 * RISC OS 12-bit filetype is stored in load_address[19:8]
+	 */
+	if ((0 == (obj->attr & ADFS_NDA_DIRECTORY)) &&
+		(0xfff00000 == (0xfff00000 & obj->loadaddr))) {
+		obj->filetype = (__u16) ((0x000fff00 & obj->loadaddr) >> 8);
+
+		/* optionally append the ,xyz hex filetype suffix */
+		if (ADFS_SB(dir->sb)->s_ftsuffix)
+			obj->name_len +=
+				append_filetype_suffix(
+					&obj->name[obj->name_len],
+					obj->filetype);
+	}
 }
 
 /*
@@ -260,7 +277,7 @@ __adfs_dir_get(struct adfs_dir *dir, int pos, struct object_info *obj)
 	if (!de.dirobname[0])
 		return -ENOENT;
 
-	adfs_dir2obj(obj, &de);
+	adfs_dir2obj(dir, obj, &de);
 
 	return 0;
 }
diff --git a/fs/adfs/dir_fplus.c b/fs/adfs/dir_fplus.c
index 1796bb35..d9e3bee 100644
--- a/fs/adfs/dir_fplus.c
+++ b/fs/adfs/dir_fplus.c
@@ -8,6 +8,7 @@
  * published by the Free Software Foundation.
  */
 #include <linux/buffer_head.h>
+#include <linux/slab.h>
 #include "adfs.h"
 #include "dir_fplus.h"
 
@@ -22,30 +23,53 @@ adfs_fplus_read(struct super_block *sb, unsigned int id, unsigned int sz, struct
 
 	dir->nr_buffers = 0;
 
+	/* start off using fixed bh set - only alloc for big dirs */
+	dir->bh_fplus = &dir->bh[0];
+
 	block = __adfs_block_map(sb, id, 0);
 	if (!block) {
 		adfs_error(sb, "dir object %X has a hole at offset 0", id);
 		goto out;
 	}
 
-	dir->bh[0] = sb_bread(sb, block);
-	if (!dir->bh[0])
+	dir->bh_fplus[0] = sb_bread(sb, block);
+	if (!dir->bh_fplus[0])
 		goto out;
 	dir->nr_buffers += 1;
 
-	h = (struct adfs_bigdirheader *)dir->bh[0]->b_data;
+	h = (struct adfs_bigdirheader *)dir->bh_fplus[0]->b_data;
 	size = le32_to_cpu(h->bigdirsize);
 	if (size != sz) {
-		printk(KERN_WARNING "adfs: adfs_fplus_read: directory header size\n"
-				" does not match directory size\n");
+		printk(KERN_WARNING "adfs: adfs_fplus_read:"
+					" directory header size %X\n"
+					" does not match directory size %X\n",
+					size, sz);
 	}
 
 	if (h->bigdirversion[0] != 0 || h->bigdirversion[1] != 0 ||
 	    h->bigdirversion[2] != 0 || size & 2047 ||
-	    h->bigdirstartname != cpu_to_le32(BIGDIRSTARTNAME))
+	    h->bigdirstartname != cpu_to_le32(BIGDIRSTARTNAME)) {
+		printk(KERN_WARNING "adfs: dir object %X has"
+					" malformed dir header\n", id);
 		goto out;
+	}
 
 	size >>= sb->s_blocksize_bits;
+	if (size > sizeof(dir->bh)/sizeof(dir->bh[0])) {
+		/* this directory is too big for fixed bh set, must allocate */
+		struct buffer_head **bh_fplus =
+			kzalloc(size * sizeof(struct buffer_head *),
+				GFP_KERNEL);
+		if (!bh_fplus) {
+			adfs_error(sb, "not enough memory for"
+					" dir object %X (%d blocks)", id, size);
+			goto out;
+		}
+		dir->bh_fplus = bh_fplus;
+		/* copy over the pointer to the block that we've already read */
+		dir->bh_fplus[0] = dir->bh[0];
+	}
+
 	for (blk = 1; blk < size; blk++) {
 		block = __adfs_block_map(sb, id, blk);
 		if (!block) {
@@ -53,25 +77,44 @@ adfs_fplus_read(struct super_block *sb, unsigned int id, unsigned int sz, struct
 			goto out;
 		}
 
-		dir->bh[blk] = sb_bread(sb, block);
-		if (!dir->bh[blk])
+		dir->bh_fplus[blk] = sb_bread(sb, block);
+		if (!dir->bh_fplus[blk]) {
+			adfs_error(sb,	"dir object %X failed read for"
+					" offset %d, mapped block %X",
+					id, blk, block);
 			goto out;
-		dir->nr_buffers = blk;
+		}
+
+		dir->nr_buffers += 1;
 	}
 
-	t = (struct adfs_bigdirtail *)(dir->bh[size - 1]->b_data + (sb->s_blocksize - 8));
+	t = (struct adfs_bigdirtail *)
+		(dir->bh_fplus[size - 1]->b_data + (sb->s_blocksize - 8));
 
 	if (t->bigdirendname != cpu_to_le32(BIGDIRENDNAME) ||
 	    t->bigdirendmasseq != h->startmasseq ||
-	    t->reserved[0] != 0 || t->reserved[1] != 0)
+	    t->reserved[0] != 0 || t->reserved[1] != 0) {
+		printk(KERN_WARNING "adfs: dir object %X has "
+					"malformed dir end\n", id);
 		goto out;
+	}
 
 	dir->parent_id = le32_to_cpu(h->bigdirparent);
 	dir->sb = sb;
 	return 0;
+
 out:
-	for (i = 0; i < dir->nr_buffers; i++)
-		brelse(dir->bh[i]);
+	if (dir->bh_fplus) {
+		for (i = 0; i < dir->nr_buffers; i++)
+			brelse(dir->bh_fplus[i]);
+
+		if (&dir->bh[0] != dir->bh_fplus)
+			kfree(dir->bh_fplus);
+
+		dir->bh_fplus = NULL;
+	}
+
+	dir->nr_buffers = 0;
 	dir->sb = NULL;
 	return ret;
 }
@@ -79,7 +122,8 @@ out:
 static int
 adfs_fplus_setpos(struct adfs_dir *dir, unsigned int fpos)
 {
-	struct adfs_bigdirheader *h = (struct adfs_bigdirheader *)dir->bh[0]->b_data;
+	struct adfs_bigdirheader *h =
+		(struct adfs_bigdirheader *) dir->bh_fplus[0]->b_data;
 	int ret = -ENOENT;
 
 	if (fpos <= le32_to_cpu(h->bigdirentries)) {
@@ -102,21 +146,27 @@ dir_memcpy(struct adfs_dir *dir, unsigned int offset, void *to, int len)
 	partial = sb->s_blocksize - offset;
 
 	if (partial >= len)
-		memcpy(to, dir->bh[buffer]->b_data + offset, len);
+		memcpy(to, dir->bh_fplus[buffer]->b_data + offset, len);
 	else {
 		char *c = (char *)to;
 
 		remainder = len - partial;
 
-		memcpy(c, dir->bh[buffer]->b_data + offset, partial);
-		memcpy(c + partial, dir->bh[buffer + 1]->b_data, remainder);
+		memcpy(c,
+			dir->bh_fplus[buffer]->b_data + offset,
+			partial);
+
+		memcpy(c + partial,
+			dir->bh_fplus[buffer + 1]->b_data,
+			remainder);
 	}
 }
 
 static int
 adfs_fplus_getnext(struct adfs_dir *dir, struct object_info *obj)
 {
-	struct adfs_bigdirheader *h = (struct adfs_bigdirheader *)dir->bh[0]->b_data;
+	struct adfs_bigdirheader *h =
+		(struct adfs_bigdirheader *) dir->bh_fplus[0]->b_data;
 	struct adfs_bigdirentry bde;
 	unsigned int offset;
 	int i, ret = -ENOENT;
@@ -147,6 +197,24 @@ adfs_fplus_getnext(struct adfs_dir *dir, struct object_info *obj)
 		if (obj->name[i] == '/')
 			obj->name[i] = '.';
 
+	obj->filetype = -1;
+
+	/*
+	 * object is a file and is filetyped and timestamped?
+	 * RISC OS 12-bit filetype is stored in load_address[19:8]
+	 */
+	if ((0 == (obj->attr & ADFS_NDA_DIRECTORY)) &&
+		(0xfff00000 == (0xfff00000 & obj->loadaddr))) {
+		obj->filetype = (__u16) ((0x000fff00 & obj->loadaddr) >> 8);
+
+		/* optionally append the ,xyz hex filetype suffix */
+		if (ADFS_SB(dir->sb)->s_ftsuffix)
+			obj->name_len +=
+				append_filetype_suffix(
+					&obj->name[obj->name_len],
+					obj->filetype);
+	}
+
 	dir->pos += 1;
 	ret = 0;
 out:
@@ -160,7 +228,7 @@ adfs_fplus_sync(struct adfs_dir *dir)
 	int i;
 
 	for (i = dir->nr_buffers - 1; i >= 0; i--) {
-		struct buffer_head *bh = dir->bh[i];
+		struct buffer_head *bh = dir->bh_fplus[i];
 		sync_dirty_buffer(bh);
 		if (buffer_req(bh) && !buffer_uptodate(bh))
 			err = -EIO;
@@ -174,8 +242,17 @@ adfs_fplus_free(struct adfs_dir *dir)
 {
 	int i;
 
-	for (i = 0; i < dir->nr_buffers; i++)
-		brelse(dir->bh[i]);
+	if (dir->bh_fplus) {
+		for (i = 0; i < dir->nr_buffers; i++)
+			brelse(dir->bh_fplus[i]);
+
+		if (&dir->bh[0] != dir->bh_fplus)
+			kfree(dir->bh_fplus);
+
+		dir->bh_fplus = NULL;
+	}
+
+	dir->nr_buffers = 0;
 	dir->sb = NULL;
 }
 
diff --git a/fs/adfs/inode.c b/fs/adfs/inode.c
index 09fe401..d5250c5 100644
--- a/fs/adfs/inode.c
+++ b/fs/adfs/inode.c
@@ -72,32 +72,18 @@ static sector_t _adfs_bmap(struct address_space *mapping, sector_t block)
 static const struct address_space_operations adfs_aops = {
 	.readpage	= adfs_readpage,
 	.writepage	= adfs_writepage,
-	.sync_page	= block_sync_page,
 	.write_begin	= adfs_write_begin,
 	.write_end	= generic_write_end,
 	.bmap		= _adfs_bmap
 };
 
-static inline unsigned int
-adfs_filetype(struct inode *inode)
-{
-	unsigned int type;
-
-	if (ADFS_I(inode)->stamped)
-		type = (ADFS_I(inode)->loadaddr >> 8) & 0xfff;
-	else
-		type = (unsigned int) -1;
-
-	return type;
-}
-
 /*
  * Convert ADFS attributes and filetype to Linux permission.
  */
 static umode_t
 adfs_atts2mode(struct super_block *sb, struct inode *inode)
 {
-	unsigned int filetype, attr = ADFS_I(inode)->attr;
+	unsigned int attr = ADFS_I(inode)->attr;
 	umode_t mode, rmask;
 	struct adfs_sb_info *asb = ADFS_SB(sb);
 
@@ -106,9 +92,7 @@ adfs_atts2mode(struct super_block *sb, struct inode *inode)
 		return S_IFDIR | S_IXUGO | mode;
 	}
 
-	filetype = adfs_filetype(inode);
-
-	switch (filetype) {
+	switch (ADFS_I(inode)->filetype) {
 	case 0xfc0:	/* LinkFS */
 		return S_IFLNK|S_IRWXUGO;
 
@@ -174,50 +158,48 @@ adfs_mode2atts(struct super_block *sb, struct inode *inode)
 
 /*
  * Convert an ADFS time to Unix time.  ADFS has a 40-bit centi-second time
- * referenced to 1 Jan 1900 (til 2248)
+ * referenced to 1 Jan 1900 (til 2248) so we need to discard 2208988800 seconds
+ * of time to convert from RISC OS epoch to Unix epoch.
  */
 static void
 adfs_adfs2unix_time(struct timespec *tv, struct inode *inode)
 {
 	unsigned int high, low;
+	/* 01 Jan 1970 00:00:00 (Unix epoch) as nanoseconds since
+	 * 01 Jan 1900 00:00:00 (RISC OS epoch)
+	 */
+	static const s64 nsec_unix_epoch_diff_risc_os_epoch =
+							2208988800000000000LL;
+	s64 nsec;
 
 	if (ADFS_I(inode)->stamped == 0)
 		goto cur_time;
 
-	high = ADFS_I(inode)->loadaddr << 24;
-	low  = ADFS_I(inode)->execaddr;
+	high = ADFS_I(inode)->loadaddr & 0xFF; /* top 8 bits of timestamp */
+	low  = ADFS_I(inode)->execaddr;    /* bottom 32 bits of timestamp */
 
-	high |= low >> 8;
-	low  &= 255;
+	/* convert 40-bit centi-seconds to 32-bit seconds
+	 * going via nanoseconds to retain precision
+	 */
+	nsec = (((s64) high << 32) | (s64) low) * 10000000; /* cs to ns */
 
 	/* Files dated pre  01 Jan 1970 00:00:00. */
-	if (high < 0x336e996a)
+	if (nsec < nsec_unix_epoch_diff_risc_os_epoch)
 		goto too_early;
 
-	/* Files dated post 18 Jan 2038 03:14:05. */
-	if (high >= 0x656e9969)
-		goto too_late;
+	/* convert from RISC OS to Unix epoch */
+	nsec -= nsec_unix_epoch_diff_risc_os_epoch;
 
-	/* discard 2208988800 (0x336e996a00) seconds of time */
-	high -= 0x336e996a;
-
-	/* convert 40-bit centi-seconds to 32-bit seconds */
-	tv->tv_sec = (((high % 100) << 8) + low) / 100 + (high / 100 << 8);
-	tv->tv_nsec = 0;
+	*tv = ns_to_timespec(nsec);
 	return;
 
  cur_time:
-	*tv = CURRENT_TIME_SEC;
+	*tv = CURRENT_TIME;
 	return;
 
  too_early:
 	tv->tv_sec = tv->tv_nsec = 0;
 	return;
-
- too_late:
-	tv->tv_sec = 0x7ffffffd;
-	tv->tv_nsec = 0;
-	return;
 }
 
 /*
@@ -279,7 +261,8 @@ adfs_iget(struct super_block *sb, struct object_info *obj)
 	ADFS_I(inode)->loadaddr  = obj->loadaddr;
 	ADFS_I(inode)->execaddr  = obj->execaddr;
 	ADFS_I(inode)->attr      = obj->attr;
-	ADFS_I(inode)->stamped	  = ((obj->loadaddr & 0xfff00000) == 0xfff00000);
+	ADFS_I(inode)->filetype  = obj->filetype;
+	ADFS_I(inode)->stamped   = ((obj->loadaddr & 0xfff00000) == 0xfff00000);
 
 	inode->i_mode	 = adfs_atts2mode(sb, inode);
 	adfs_adfs2unix_time(&inode->i_mtime, inode);
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 06d7388..c8bf36a 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -138,17 +138,20 @@ static int adfs_show_options(struct seq_file *seq, struct vfsmount *mnt)
 		seq_printf(seq, ",ownmask=%o", asb->s_owner_mask);
 	if (asb->s_other_mask != ADFS_DEFAULT_OTHER_MASK)
 		seq_printf(seq, ",othmask=%o", asb->s_other_mask);
+	if (asb->s_ftsuffix != 0)
+		seq_printf(seq, ",ftsuffix=%u", asb->s_ftsuffix);
 
 	return 0;
 }
 
-enum {Opt_uid, Opt_gid, Opt_ownmask, Opt_othmask, Opt_err};
+enum {Opt_uid, Opt_gid, Opt_ownmask, Opt_othmask, Opt_ftsuffix, Opt_err};
 
 static const match_table_t tokens = {
 	{Opt_uid, "uid=%u"},
 	{Opt_gid, "gid=%u"},
 	{Opt_ownmask, "ownmask=%o"},
 	{Opt_othmask, "othmask=%o"},
+	{Opt_ftsuffix, "ftsuffix=%u"},
 	{Opt_err, NULL}
 };
 
@@ -189,6 +192,11 @@ static int parse_options(struct super_block *sb, char *options)
 				return -EINVAL;
 			asb->s_other_mask = option;
 			break;
+		case Opt_ftsuffix:
+			if (match_int(args, &option))
+				return -EINVAL;
+			asb->s_ftsuffix = option;
+			break;
 		default:
 			printk("ADFS-fs: unrecognised mount option \"%s\" "
 					"or missing value\n", p);
@@ -366,6 +374,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
 	asb->s_gid = 0;
 	asb->s_owner_mask = ADFS_DEFAULT_OWNER_MASK;
 	asb->s_other_mask = ADFS_DEFAULT_OTHER_MASK;
+	asb->s_ftsuffix = 0;
 
 	if (parse_options(sb, data))
 		goto error;
@@ -445,11 +454,13 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
 
 	root_obj.parent_id = root_obj.file_id = le32_to_cpu(dr->root);
 	root_obj.name_len  = 0;
-	root_obj.loadaddr  = 0;
-	root_obj.execaddr  = 0;
+	/* Set root object date as 01 Jan 1987 00:00:00 */
+	root_obj.loadaddr  = 0xfff0003f;
+	root_obj.execaddr  = 0xec22c000;
 	root_obj.size	   = ADFS_NEWDIR_SIZE;
 	root_obj.attr	   = ADFS_NDA_DIRECTORY   | ADFS_NDA_OWNER_READ |
 			     ADFS_NDA_OWNER_WRITE | ADFS_NDA_PUBLIC_READ;
+	root_obj.filetype  = -1;
 
 	/*
 	 * If this is a F+ disk with variable length directories,
@@ -463,6 +474,12 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
 		asb->s_dir     = &adfs_f_dir_ops;
 		asb->s_namelen = ADFS_F_NAME_LEN;
 	}
+	/*
+	 * ,xyz hex filetype suffix may be added by driver
+	 * to files that have valid RISC OS filetype
+	 */
+	if (asb->s_ftsuffix)
+		asb->s_namelen += 4;
 
 	sb->s_d_op = &adfs_dentry_operations;
 	root = adfs_iget(sb, &root_obj);
diff --git a/fs/affs/Makefile b/fs/affs/Makefile
index b2c4f54..3988b4a 100644
--- a/fs/affs/Makefile
+++ b/fs/affs/Makefile
@@ -2,7 +2,7 @@
 # Makefile for the Linux affs filesystem routines.
 #
 
-#EXTRA_CFLAGS=-DDEBUG=1
+#ccflags-y := -DDEBUG=1
 
 obj-$(CONFIG_AFFS_FS) += affs.o
 
diff --git a/fs/affs/file.c b/fs/affs/file.c
index 0a90dcd..acf321b 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -429,7 +429,6 @@ static sector_t _affs_bmap(struct address_space *mapping, sector_t block)
 const struct address_space_operations affs_aops = {
 	.readpage = affs_readpage,
 	.writepage = affs_writepage,
-	.sync_page = block_sync_page,
 	.write_begin = affs_write_begin,
 	.write_end = generic_write_end,
 	.bmap = _affs_bmap
@@ -786,7 +785,6 @@ out:
 const struct address_space_operations affs_aops_ofs = {
 	.readpage = affs_readpage_ofs,
 	//.writepage = affs_writepage_ofs,
-	//.sync_page = affs_sync_page_ofs,
 	.write_begin = affs_write_begin_ofs,
 	.write_end = affs_write_end_ofs
 };
diff --git a/fs/aio.c b/fs/aio.c
index 7f54f43..e29ec48 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -34,8 +34,6 @@
 #include <linux/security.h>
 #include <linux/eventfd.h>
 #include <linux/blkdev.h>
-#include <linux/mempool.h>
-#include <linux/hash.h>
 #include <linux/compat.h>
 
 #include <asm/kmap_types.h>
@@ -65,14 +63,6 @@ static DECLARE_WORK(fput_work, aio_fput_routine);
 static DEFINE_SPINLOCK(fput_lock);
 static LIST_HEAD(fput_head);
 
-#define AIO_BATCH_HASH_BITS	3 /* allocated on-stack, so don't go crazy */
-#define AIO_BATCH_HASH_SIZE	(1 << AIO_BATCH_HASH_BITS)
-struct aio_batch_entry {
-	struct hlist_node list;
-	struct address_space *mapping;
-};
-mempool_t *abe_pool;
-
 static void aio_kick_handler(struct work_struct *);
 static void aio_queue_work(struct kioctx *);
 
@@ -86,8 +76,7 @@ static int __init aio_setup(void)
 	kioctx_cachep = KMEM_CACHE(kioctx,SLAB_HWCACHE_ALIGN|SLAB_PANIC);
 
 	aio_wq = alloc_workqueue("aio", 0, 1);	/* used to limit concurrency */
-	abe_pool = mempool_create_kmalloc_pool(1, sizeof(struct aio_batch_entry));
-	BUG_ON(!aio_wq || !abe_pool);
+	BUG_ON(!aio_wq);
 
 	pr_debug("aio_setup: sizeof(struct page) = %d\n", (int)sizeof(struct page));
 
@@ -520,7 +509,7 @@ static inline void really_put_req(struct kioctx *ctx, struct kiocb *req)
 	ctx->reqs_active--;
 
 	if (unlikely(!ctx->reqs_active && ctx->dead))
-		wake_up(&ctx->wait);
+		wake_up_all(&ctx->wait);
 }
 
 static void aio_fput_routine(struct work_struct *data)
@@ -1229,7 +1218,7 @@ static void io_destroy(struct kioctx *ioctx)
 	 * by other CPUs at this point.  Right now, we rely on the
 	 * locking done by the above calls to ensure this consistency.
 	 */
-	wake_up(&ioctx->wait);
+	wake_up_all(&ioctx->wait);
 	put_ioctx(ioctx);	/* once for the lookup */
 }
 
@@ -1525,57 +1514,8 @@ static ssize_t aio_setup_iocb(struct kiocb *kiocb, bool compat)
 	return 0;
 }
 
-static void aio_batch_add(struct address_space *mapping,
-			  struct hlist_head *batch_hash)
-{
-	struct aio_batch_entry *abe;
-	struct hlist_node *pos;
-	unsigned bucket;
-
-	bucket = hash_ptr(mapping, AIO_BATCH_HASH_BITS);
-	hlist_for_each_entry(abe, pos, &batch_hash[bucket], list) {
-		if (abe->mapping == mapping)
-			return;
-	}
-
-	abe = mempool_alloc(abe_pool, GFP_KERNEL);
-
-	/*
-	 * we should be using igrab here, but
-	 * we don't want to hammer on the global
-	 * inode spinlock just to take an extra
-	 * reference on a file that we must already
-	 * have a reference to.
-	 *
-	 * When we're called, we always have a reference
-	 * on the file, so we must always have a reference
-	 * on the inode, so ihold() is safe here.
-	 */
-	ihold(mapping->host);
-	abe->mapping = mapping;
-	hlist_add_head(&abe->list, &batch_hash[bucket]);
-	return;
-}
-
-static void aio_batch_free(struct hlist_head *batch_hash)
-{
-	struct aio_batch_entry *abe;
-	struct hlist_node *pos, *n;
-	int i;
-
-	for (i = 0; i < AIO_BATCH_HASH_SIZE; i++) {
-		hlist_for_each_entry_safe(abe, pos, n, &batch_hash[i], list) {
-			blk_run_address_space(abe->mapping);
-			iput(abe->mapping->host);
-			hlist_del(&abe->list);
-			mempool_free(abe, abe_pool);
-		}
-	}
-}
-
 static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
-			 struct iocb *iocb, struct hlist_head *batch_hash,
-			 bool compat)
+			 struct iocb *iocb, bool compat)
 {
 	struct kiocb *req;
 	struct file *file;
@@ -1666,11 +1606,6 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
 			;
 	}
 	spin_unlock_irq(&ctx->ctx_lock);
-	if (req->ki_opcode == IOCB_CMD_PREAD ||
-	    req->ki_opcode == IOCB_CMD_PREADV ||
-	    req->ki_opcode == IOCB_CMD_PWRITE ||
-	    req->ki_opcode == IOCB_CMD_PWRITEV)
-		aio_batch_add(file->f_mapping, batch_hash);
 
 	aio_put_req(req);	/* drop extra ref to req */
 	return 0;
@@ -1687,7 +1622,7 @@ long do_io_submit(aio_context_t ctx_id, long nr,
 	struct kioctx *ctx;
 	long ret = 0;
 	int i;
-	struct hlist_head batch_hash[AIO_BATCH_HASH_SIZE] = { { 0, }, };
+	struct blk_plug plug;
 
 	if (unlikely(nr < 0))
 		return -EINVAL;
@@ -1704,6 +1639,8 @@ long do_io_submit(aio_context_t ctx_id, long nr,
 		return -EINVAL;
 	}
 
+	blk_start_plug(&plug);
+
 	/*
 	 * AKPM: should this return a partial result if some of the IOs were
 	 * successfully submitted?
@@ -1722,11 +1659,11 @@ long do_io_submit(aio_context_t ctx_id, long nr,
 			break;
 		}
 
-		ret = io_submit_one(ctx, user_iocb, &tmp, batch_hash, compat);
+		ret = io_submit_one(ctx, user_iocb, &tmp, compat);
 		if (ret)
 			break;
 	}
-	aio_batch_free(batch_hash);
+	blk_finish_plug(&plug);
 
 	put_ioctx(ctx);
 	return i ? i : ret;
diff --git a/fs/attr.c b/fs/attr.c
index 7ca4181..1007ed6 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -59,7 +59,7 @@ int inode_change_ok(const struct inode *inode, struct iattr *attr)
 
 	/* Make sure a caller can chmod. */
 	if (ia_valid & ATTR_MODE) {
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EPERM;
 		/* Also check the setgid bit! */
 		if (!in_group_p((ia_valid & ATTR_GID) ? attr->ia_gid :
@@ -69,7 +69,7 @@ int inode_change_ok(const struct inode *inode, struct iattr *attr)
 
 	/* Check for setting the inode time. */
 	if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)) {
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EPERM;
 	}
 
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index 54f9237..475f9c5 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -61,8 +61,6 @@ do {							\
 		current->pid, __func__, ##args);	\
 } while (0)
 
-extern spinlock_t autofs4_lock;
-
 /* Unified info structure.  This is pointed to by both the dentry and
    inode structures.  Each file in the filesystem has an instance of this
    structure.  It holds a reference to the dentry, so dentries are never
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index 1442da4..509fe1e 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -372,6 +372,10 @@ static int autofs_dev_ioctl_setpipefd(struct file *fp,
 		return -EBUSY;
 	} else {
 		struct file *pipe = fget(pipefd);
+		if (!pipe) {
+			err = -EBADF;
+			goto out;
+		}
 		if (!pipe->f_op || !pipe->f_op->write) {
 			err = -EPIPE;
 			fput(pipe);
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index f43100b..450f529 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -87,18 +87,70 @@ done:
 }
 
 /*
+ * Calculate and dget next entry in the subdirs list under root.
+ */
+static struct dentry *get_next_positive_subdir(struct dentry *prev,
+						struct dentry *root)
+{
+	struct autofs_sb_info *sbi = autofs4_sbi(root->d_sb);
+	struct list_head *next;
+	struct dentry *p, *q;
+
+	spin_lock(&sbi->lookup_lock);
+
+	if (prev == NULL) {
+		spin_lock(&root->d_lock);
+		prev = dget_dlock(root);
+		next = prev->d_subdirs.next;
+		p = prev;
+		goto start;
+	}
+
+	p = prev;
+	spin_lock(&p->d_lock);
+again:
+	next = p->d_u.d_child.next;
+start:
+	if (next == &root->d_subdirs) {
+		spin_unlock(&p->d_lock);
+		spin_unlock(&sbi->lookup_lock);
+		dput(prev);
+		return NULL;
+	}
+
+	q = list_entry(next, struct dentry, d_u.d_child);
+
+	spin_lock_nested(&q->d_lock, DENTRY_D_LOCK_NESTED);
+	/* Negative dentry - try next */
+	if (!simple_positive(q)) {
+		spin_unlock(&p->d_lock);
+		p = q;
+		goto again;
+	}
+	dget_dlock(q);
+	spin_unlock(&q->d_lock);
+	spin_unlock(&p->d_lock);
+	spin_unlock(&sbi->lookup_lock);
+
+	dput(prev);
+
+	return q;
+}
+
+/*
  * Calculate and dget next entry in top down tree traversal.
  */
 static struct dentry *get_next_positive_dentry(struct dentry *prev,
 						struct dentry *root)
 {
+	struct autofs_sb_info *sbi = autofs4_sbi(root->d_sb);
 	struct list_head *next;
 	struct dentry *p, *ret;
 
 	if (prev == NULL)
 		return dget(root);
 
-	spin_lock(&autofs4_lock);
+	spin_lock(&sbi->lookup_lock);
 relock:
 	p = prev;
 	spin_lock(&p->d_lock);
@@ -110,7 +162,7 @@ again:
 
 			if (p == root) {
 				spin_unlock(&p->d_lock);
-				spin_unlock(&autofs4_lock);
+				spin_unlock(&sbi->lookup_lock);
 				dput(prev);
 				return NULL;
 			}
@@ -140,7 +192,7 @@ again:
 	dget_dlock(ret);
 	spin_unlock(&ret->d_lock);
 	spin_unlock(&p->d_lock);
-	spin_unlock(&autofs4_lock);
+	spin_unlock(&sbi->lookup_lock);
 
 	dput(prev);
 
@@ -290,11 +342,8 @@ struct dentry *autofs4_expire_direct(struct super_block *sb,
 	spin_lock(&sbi->fs_lock);
 	ino = autofs4_dentry_ino(root);
 	/* No point expiring a pending mount */
-	if (ino->flags & AUTOFS_INF_PENDING) {
-		spin_unlock(&sbi->fs_lock);
-		return NULL;
-	}
-	managed_dentry_set_transit(root);
+	if (ino->flags & AUTOFS_INF_PENDING)
+		goto out;
 	if (!autofs4_direct_busy(mnt, root, timeout, do_now)) {
 		struct autofs_info *ino = autofs4_dentry_ino(root);
 		ino->flags |= AUTOFS_INF_EXPIRING;
@@ -302,7 +351,7 @@ struct dentry *autofs4_expire_direct(struct super_block *sb,
 		spin_unlock(&sbi->fs_lock);
 		return root;
 	}
-	managed_dentry_clear_transit(root);
+out:
 	spin_unlock(&sbi->fs_lock);
 	dput(root);
 
@@ -336,13 +385,12 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
 	timeout = sbi->exp_timeout;
 
 	dentry = NULL;
-	while ((dentry = get_next_positive_dentry(dentry, root))) {
+	while ((dentry = get_next_positive_subdir(dentry, root))) {
 		spin_lock(&sbi->fs_lock);
 		ino = autofs4_dentry_ino(dentry);
 		/* No point expiring a pending mount */
 		if (ino->flags & AUTOFS_INF_PENDING)
-			goto cont;
-		managed_dentry_set_transit(dentry);
+			goto next;
 
 		/*
 		 * Case 1: (i) indirect mount or top level pseudo direct mount
@@ -402,8 +450,6 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
 			}
 		}
 next:
-		managed_dentry_clear_transit(dentry);
-cont:
 		spin_unlock(&sbi->fs_lock);
 	}
 	return NULL;
@@ -415,13 +461,13 @@ found:
 	ino->flags |= AUTOFS_INF_EXPIRING;
 	init_completion(&ino->expire_complete);
 	spin_unlock(&sbi->fs_lock);
-	spin_lock(&autofs4_lock);
+	spin_lock(&sbi->lookup_lock);
 	spin_lock(&expired->d_parent->d_lock);
 	spin_lock_nested(&expired->d_lock, DENTRY_D_LOCK_NESTED);
 	list_move(&expired->d_parent->d_subdirs, &expired->d_u.d_child);
 	spin_unlock(&expired->d_lock);
 	spin_unlock(&expired->d_parent->d_lock);
-	spin_unlock(&autofs4_lock);
+	spin_unlock(&sbi->lookup_lock);
 	return expired;
 }
 
@@ -484,8 +530,6 @@ int autofs4_expire_run(struct super_block *sb,
 	spin_lock(&sbi->fs_lock);
 	ino = autofs4_dentry_ino(dentry);
 	ino->flags &= ~AUTOFS_INF_EXPIRING;
-	if (!d_unhashed(dentry))
-		managed_dentry_clear_transit(dentry);
 	complete_all(&ino->expire_complete);
 	spin_unlock(&sbi->fs_lock);
 
@@ -513,9 +557,7 @@ int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
 		spin_lock(&sbi->fs_lock);
 		ino->flags &= ~AUTOFS_INF_EXPIRING;
 		spin_lock(&dentry->d_lock);
-		if (ret)
-			__managed_dentry_clear_transit(dentry);
-		else {
+		if (!ret) {
 			if ((IS_ROOT(dentry) ||
 			    (autofs_type_indirect(sbi->type) &&
 			     IS_ROOT(dentry->d_parent))) &&
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index e6f84d2..96804a1 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -23,8 +23,6 @@
 
 #include "autofs_i.h"
 
-DEFINE_SPINLOCK(autofs4_lock);
-
 static int autofs4_dir_symlink(struct inode *,struct dentry *,const char *);
 static int autofs4_dir_unlink(struct inode *,struct dentry *);
 static int autofs4_dir_rmdir(struct inode *,struct dentry *);
@@ -125,15 +123,15 @@ static int autofs4_dir_open(struct inode *inode, struct file *file)
 	 * autofs file system so just let the libfs routines handle
 	 * it.
 	 */
-	spin_lock(&autofs4_lock);
+	spin_lock(&sbi->lookup_lock);
 	spin_lock(&dentry->d_lock);
 	if (!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs)) {
 		spin_unlock(&dentry->d_lock);
-		spin_unlock(&autofs4_lock);
+		spin_unlock(&sbi->lookup_lock);
 		return -ENOENT;
 	}
 	spin_unlock(&dentry->d_lock);
-	spin_unlock(&autofs4_lock);
+	spin_unlock(&sbi->lookup_lock);
 
 out:
 	return dcache_dir_open(inode, file);
@@ -171,7 +169,6 @@ static struct dentry *autofs4_lookup_active(struct dentry *dentry)
 	const unsigned char *str = name->name;
 	struct list_head *p, *head;
 
-	spin_lock(&autofs4_lock);
 	spin_lock(&sbi->lookup_lock);
 	head = &sbi->active_list;
 	list_for_each(p, head) {
@@ -204,14 +201,12 @@ static struct dentry *autofs4_lookup_active(struct dentry *dentry)
 			dget_dlock(active);
 			spin_unlock(&active->d_lock);
 			spin_unlock(&sbi->lookup_lock);
-			spin_unlock(&autofs4_lock);
 			return active;
 		}
 next:
 		spin_unlock(&active->d_lock);
 	}
 	spin_unlock(&sbi->lookup_lock);
-	spin_unlock(&autofs4_lock);
 
 	return NULL;
 }
@@ -226,7 +221,6 @@ static struct dentry *autofs4_lookup_expiring(struct dentry *dentry)
 	const unsigned char *str = name->name;
 	struct list_head *p, *head;
 
-	spin_lock(&autofs4_lock);
 	spin_lock(&sbi->lookup_lock);
 	head = &sbi->expiring_list;
 	list_for_each(p, head) {
@@ -259,14 +253,12 @@ static struct dentry *autofs4_lookup_expiring(struct dentry *dentry)
 			dget_dlock(expiring);
 			spin_unlock(&expiring->d_lock);
 			spin_unlock(&sbi->lookup_lock);
-			spin_unlock(&autofs4_lock);
 			return expiring;
 		}
 next:
 		spin_unlock(&expiring->d_lock);
 	}
 	spin_unlock(&sbi->lookup_lock);
-	spin_unlock(&autofs4_lock);
 
 	return NULL;
 }
@@ -275,17 +267,16 @@ static int autofs4_mount_wait(struct dentry *dentry)
 {
 	struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
 	struct autofs_info *ino = autofs4_dentry_ino(dentry);
-	int status;
+	int status = 0;
 
 	if (ino->flags & AUTOFS_INF_PENDING) {
 		DPRINTK("waiting for mount name=%.*s",
 			dentry->d_name.len, dentry->d_name.name);
 		status = autofs4_wait(sbi, dentry, NFY_MOUNT);
 		DPRINTK("mount wait done status=%d", status);
-		ino->last_used = jiffies;
-		return status;
 	}
-	return 0;
+	ino->last_used = jiffies;
+	return status;
 }
 
 static int do_expire_wait(struct dentry *dentry)
@@ -319,9 +310,12 @@ static struct dentry *autofs4_mountpoint_changed(struct path *path)
 	 */
 	if (autofs_type_indirect(sbi->type) && d_unhashed(dentry)) {
 		struct dentry *parent = dentry->d_parent;
+		struct autofs_info *ino;
 		struct dentry *new = d_lookup(parent, &dentry->d_name);
 		if (!new)
 			return NULL;
+		ino = autofs4_dentry_ino(new);
+		ino->last_used = jiffies;
 		dput(path->dentry);
 		path->dentry = new;
 	}
@@ -338,18 +332,6 @@ static struct vfsmount *autofs4_d_automount(struct path *path)
 	DPRINTK("dentry=%p %.*s",
 		dentry, dentry->d_name.len, dentry->d_name.name);
 
-	/*
-	 * Someone may have manually umounted this or it was a submount
-	 * that has gone away.
-	 */
-	spin_lock(&dentry->d_lock);
-	if (!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs)) {
-		if (!(dentry->d_flags & DCACHE_MANAGE_TRANSIT) &&
-		     (dentry->d_flags & DCACHE_NEED_AUTOMOUNT))
-			__managed_dentry_set_transit(path->dentry);
-	}
-	spin_unlock(&dentry->d_lock);
-
 	/* The daemon never triggers a mount. */
 	if (autofs4_oz_mode(sbi))
 		return NULL;
@@ -418,18 +400,17 @@ static struct vfsmount *autofs4_d_automount(struct path *path)
 done:
 	if (!(ino->flags & AUTOFS_INF_EXPIRING)) {
 		/*
-		 * Any needed mounting has been completed and the path updated
-		 * so turn this into a normal dentry so we don't continually
-		 * call ->d_automount() and ->d_manage().
-		 */
-		spin_lock(&dentry->d_lock);
-		__managed_dentry_clear_transit(dentry);
-		/*
+		 * Any needed mounting has been completed and the path
+		 * updated so clear DCACHE_NEED_AUTOMOUNT so we don't
+		 * call ->d_automount() on rootless multi-mounts since
+		 * it can lead to an incorrect ELOOP error return.
+		 *
 		 * Only clear DMANAGED_AUTOMOUNT for rootless multi-mounts and
 		 * symlinks as in all other cases the dentry will be covered by
 		 * an actual mount so ->d_automount() won't be called during
 		 * the follow.
 		 */
+		spin_lock(&dentry->d_lock);
 		if ((!d_mountpoint(dentry) &&
 		    !list_empty(&dentry->d_subdirs)) ||
 		    (dentry->d_inode && S_ISLNK(dentry->d_inode->i_mode)))
@@ -455,6 +436,8 @@ int autofs4_d_manage(struct dentry *dentry, bool rcu_walk)
 
 	/* The daemon never waits. */
 	if (autofs4_oz_mode(sbi)) {
+		if (rcu_walk)
+			return 0;
 		if (!d_mountpoint(dentry))
 			return -EISDIR;
 		return 0;
@@ -612,12 +595,12 @@ static int autofs4_dir_unlink(struct inode *dir, struct dentry *dentry)
 
 	dir->i_mtime = CURRENT_TIME;
 
-	spin_lock(&autofs4_lock);
-	autofs4_add_expiring(dentry);
+	spin_lock(&sbi->lookup_lock);
+	__autofs4_add_expiring(dentry);
 	spin_lock(&dentry->d_lock);
 	__d_drop(dentry);
 	spin_unlock(&dentry->d_lock);
-	spin_unlock(&autofs4_lock);
+	spin_unlock(&sbi->lookup_lock);
 
 	return 0;
 }
@@ -686,20 +669,17 @@ static int autofs4_dir_rmdir(struct inode *dir, struct dentry *dentry)
 	if (!autofs4_oz_mode(sbi))
 		return -EACCES;
 
-	spin_lock(&autofs4_lock);
 	spin_lock(&sbi->lookup_lock);
 	spin_lock(&dentry->d_lock);
 	if (!list_empty(&dentry->d_subdirs)) {
 		spin_unlock(&dentry->d_lock);
 		spin_unlock(&sbi->lookup_lock);
-		spin_unlock(&autofs4_lock);
 		return -ENOTEMPTY;
 	}
 	__autofs4_add_expiring(dentry);
-	spin_unlock(&sbi->lookup_lock);
 	__d_drop(dentry);
 	spin_unlock(&dentry->d_lock);
-	spin_unlock(&autofs4_lock);
+	spin_unlock(&sbi->lookup_lock);
 
 	if (sbi->version < 5)
 		autofs_clear_leaf_automount_flags(dentry);
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 5601005..2543598 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -197,12 +197,12 @@ rename_retry:
 
 	seq = read_seqbegin(&rename_lock);
 	rcu_read_lock();
-	spin_lock(&autofs4_lock);
+	spin_lock(&sbi->fs_lock);
 	for (tmp = dentry ; tmp != root ; tmp = tmp->d_parent)
 		len += tmp->d_name.len + 1;
 
 	if (!len || --len > NAME_MAX) {
-		spin_unlock(&autofs4_lock);
+		spin_unlock(&sbi->fs_lock);
 		rcu_read_unlock();
 		if (read_seqretry(&rename_lock, seq))
 			goto rename_retry;
@@ -218,7 +218,7 @@ rename_retry:
 		p -= tmp->d_name.len;
 		strncpy(p, tmp->d_name.name, tmp->d_name.len);
 	}
-	spin_unlock(&autofs4_lock);
+	spin_unlock(&sbi->fs_lock);
 	rcu_read_unlock();
 	if (read_seqretry(&rename_lock, seq))
 		goto rename_retry;
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index b1d0c79..06457ed 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -75,7 +75,6 @@ static const struct inode_operations befs_dir_inode_operations = {
 
 static const struct address_space_operations befs_aops = {
 	.readpage	= befs_readpage,
-	.sync_page	= block_sync_page,
 	.bmap		= befs_bmap,
 };
 
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index 685ecff..b14cebf 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -97,7 +97,7 @@ static int bfs_create(struct inode *dir, struct dentry *dentry, int mode,
 	if (!inode)
 		return -ENOSPC;
 	mutex_lock(&info->bfs_lock);
-	ino = find_first_zero_bit(info->si_imap, info->si_lasti);
+	ino = find_first_zero_bit(info->si_imap, info->si_lasti + 1);
 	if (ino > info->si_lasti) {
 		mutex_unlock(&info->bfs_lock);
 		iput(inode);
diff --git a/fs/bfs/file.c b/fs/bfs/file.c
index eb67edd..f20e8a7 100644
--- a/fs/bfs/file.c
+++ b/fs/bfs/file.c
@@ -186,7 +186,6 @@ static sector_t bfs_bmap(struct address_space *mapping, sector_t block)
 const struct address_space_operations bfs_aops = {
 	.readpage	= bfs_readpage,
 	.writepage	= bfs_writepage,
-	.sync_page	= block_sync_page,
 	.write_begin	= bfs_write_begin,
 	.write_end	= generic_write_end,
 	.bmap		= bfs_bmap,
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index d5b640b..f34078d 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -570,7 +570,7 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
 	unsigned long elf_entry;
 	unsigned long interp_load_addr = 0;
 	unsigned long start_code, end_code, start_data, end_data;
-	unsigned long reloc_func_desc = 0;
+	unsigned long reloc_func_desc __maybe_unused = 0;
 	int executable_stack = EXSTACK_DEFAULT;
 	unsigned long def_flags = 0;
 	struct {
@@ -1906,7 +1906,7 @@ static int elf_core_dump(struct coredump_params *cprm)
 	segs = current->mm->map_count;
 	segs += elf_core_extra_phdrs();
 
-	gate_vma = get_gate_vma(current);
+	gate_vma = get_gate_vma(current->mm);
 	if (gate_vma != NULL)
 		segs++;
 
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index e49cce2..9c5e6b2 100644
--- a/fs/bio-integrity.c
+++ b/fs/bio-integrity.c
@@ -761,6 +761,9 @@ int bioset_integrity_create(struct bio_set *bs, int pool_size)
 {
 	unsigned int max_slab = vecs_to_idx(BIO_MAX_PAGES);
 
+	if (bs->bio_integrity_pool)
+		return 0;
+
 	bs->bio_integrity_pool =
 		mempool_create_slab_pool(pool_size, bip_slab[max_slab].slab);
 
diff --git a/fs/bio.c b/fs/bio.c
index 4bd454f..4d6d4b6 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -43,7 +43,7 @@ static mempool_t *bio_split_pool __read_mostly;
  * unsigned short
  */
 #define BV(x) { .nr_vecs = x, .name = "biovec-"__stringify(x) }
-struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] __read_mostly = {
+static struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] __read_mostly = {
 	BV(1), BV(4), BV(16), BV(64), BV(128), BV(BIO_MAX_PAGES),
 };
 #undef BV
@@ -111,7 +111,7 @@ static struct kmem_cache *bio_find_or_create_slab(unsigned int extra_size)
 	if (!slab)
 		goto out_unlock;
 
-	printk("bio: create slab <%s> at %d\n", bslab->name, entry);
+	printk(KERN_INFO "bio: create slab <%s> at %d\n", bslab->name, entry);
 	bslab->slab = slab;
 	bslab->slab_ref = 1;
 	bslab->slab_size = sz;
@@ -1636,9 +1636,6 @@ struct bio_set *bioset_create(unsigned int pool_size, unsigned int front_pad)
 	if (!bs->bio_pool)
 		goto bad;
 
-	if (bioset_integrity_create(bs, pool_size))
-		goto bad;
-
 	if (!biovec_create_pools(bs, pool_size))
 		return bs;
 
@@ -1656,12 +1653,10 @@ static void __init biovec_init_slabs(void)
 		int size;
 		struct biovec_slab *bvs = bvec_slabs + i;
 
-#ifndef CONFIG_BLK_DEV_INTEGRITY
 		if (bvs->nr_vecs <= BIO_INLINE_VECS) {
 			bvs->slab = NULL;
 			continue;
 		}
-#endif
 
 		size = bvs->nr_vecs * sizeof(struct bio_vec);
 		bvs->slab = kmem_cache_create(bvs->name, size, 0,
@@ -1684,6 +1679,9 @@ static int __init init_bio(void)
 	if (!fs_bio_set)
 		panic("bio: can't allocate bios\n");
 
+	if (bioset_integrity_create(fs_bio_set, BIO_POOL_SIZE))
+		panic("bio: can't create integrity pool\n");
+
 	bio_split_pool = mempool_create_kmalloc_pool(BIO_SPLIT_ENTRIES,
 						     sizeof(struct bio_pair));
 	if (!bio_split_pool)
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 8892870..c1511c6 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -55,11 +55,13 @@ EXPORT_SYMBOL(I_BDEV);
 static void bdev_inode_switch_bdi(struct inode *inode,
 			struct backing_dev_info *dst)
 {
-	spin_lock(&inode_lock);
+	spin_lock(&inode_wb_list_lock);
+	spin_lock(&inode->i_lock);
 	inode->i_data.backing_dev_info = dst;
 	if (inode->i_state & I_DIRTY)
 		list_move(&inode->i_wb_list, &dst->wb.b_dirty);
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode->i_lock);
+	spin_unlock(&inode_wb_list_lock);
 }
 
 static sector_t max_block(struct block_device *bdev)
@@ -1087,6 +1089,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
 	if (!disk)
 		goto out;
 
+	disk_block_events(disk);
 	mutex_lock_nested(&bdev->bd_mutex, for_part);
 	if (!bdev->bd_openers) {
 		bdev->bd_disk = disk;
@@ -1108,10 +1111,11 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
 					 */
 					disk_put_part(bdev->bd_part);
 					bdev->bd_part = NULL;
-					module_put(disk->fops->owner);
-					put_disk(disk);
 					bdev->bd_disk = NULL;
 					mutex_unlock(&bdev->bd_mutex);
+					disk_unblock_events(disk);
+					module_put(disk->fops->owner);
+					put_disk(disk);
 					goto restart;
 				}
 				if (ret)
@@ -1148,9 +1152,6 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
 			bd_set_size(bdev, (loff_t)bdev->bd_part->nr_sects << 9);
 		}
 	} else {
-		module_put(disk->fops->owner);
-		put_disk(disk);
-		disk = NULL;
 		if (bdev->bd_contains == bdev) {
 			if (bdev->bd_disk->fops->open) {
 				ret = bdev->bd_disk->fops->open(bdev, mode);
@@ -1160,11 +1161,15 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
 			if (bdev->bd_invalidated)
 				rescan_partitions(bdev->bd_disk, bdev);
 		}
+		/* only one opener holds refs to the module and disk */
+		module_put(disk->fops->owner);
+		put_disk(disk);
 	}
 	bdev->bd_openers++;
 	if (for_part)
 		bdev->bd_part_count++;
 	mutex_unlock(&bdev->bd_mutex);
+	disk_unblock_events(disk);
 	return 0;
 
  out_clear:
@@ -1177,10 +1182,10 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
 	bdev->bd_contains = NULL;
  out_unlock_bdev:
 	mutex_unlock(&bdev->bd_mutex);
- out:
-	if (disk)
-		module_put(disk->fops->owner);
+	disk_unblock_events(disk);
+	module_put(disk->fops->owner);
 	put_disk(disk);
+ out:
 	bdput(bdev);
 
 	return ret;
@@ -1446,14 +1451,13 @@ int blkdev_put(struct block_device *bdev, fmode_t mode)
 		if (bdev_free) {
 			if (bdev->bd_write_holder) {
 				disk_unblock_events(bdev->bd_disk);
-				bdev->bd_write_holder = false;
-			} else
 				disk_check_events(bdev->bd_disk);
+				bdev->bd_write_holder = false;
+			}
 		}
 
 		mutex_unlock(&bdev->bd_mutex);
-	} else
-		disk_check_events(bdev->bd_disk);
+	}
 
 	return __blkdev_put(bdev, mode, 0);
 }
@@ -1527,7 +1531,6 @@ static int blkdev_releasepage(struct page *page, gfp_t wait)
 static const struct address_space_operations def_blk_aops = {
 	.readpage	= blkdev_readpage,
 	.writepage	= blkdev_writepage,
-	.sync_page	= block_sync_page,
 	.write_begin	= blkdev_write_begin,
 	.write_end	= blkdev_write_end,
 	.writepages	= generic_writepages,
diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index 9c94934..de34bfa 100644
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -170,7 +170,7 @@ static int btrfs_xattr_acl_set(struct dentry *dentry, const char *name,
 	int ret;
 	struct posix_acl *acl = NULL;
 
-	if (!is_owner_or_cap(dentry->d_inode))
+	if (!inode_owner_or_capable(dentry->d_inode))
 		return -EPERM;
 
 	if (!IS_POSIXACL(dentry->d_inode))
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index ccc991c..57c3bb2 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -136,9 +136,8 @@ struct btrfs_inode {
 	 * items we think we'll end up using, and reserved_extents is the number
 	 * of extent items we've reserved metadata for.
 	 */
-	spinlock_t accounting_lock;
 	atomic_t outstanding_extents;
-	int reserved_extents;
+	atomic_t reserved_extents;
 
 	/*
 	 * ordered_data_close is set by truncate when a file that used
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 4d2110e..41d1d7c 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -340,6 +340,8 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start,
 
 	WARN_ON(start & ((u64)PAGE_CACHE_SIZE - 1));
 	cb = kmalloc(compressed_bio_size(root, compressed_len), GFP_NOFS);
+	if (!cb)
+		return -ENOMEM;
 	atomic_set(&cb->pending_bios, 0);
 	cb->errors = 0;
 	cb->inode = inode;
@@ -354,6 +356,10 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start,
 	bdev = BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev;
 
 	bio = compressed_bio_alloc(bdev, first_byte, GFP_NOFS);
+	if(!bio) {
+		kfree(cb);
+		return -ENOMEM;
+	}
 	bio->bi_private = cb;
 	bio->bi_end_io = end_compressed_bio_write;
 	atomic_inc(&cb->pending_bios);
@@ -657,8 +663,9 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
 			atomic_inc(&cb->pending_bios);
 
 			if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) {
-				btrfs_lookup_bio_sums(root, inode, comp_bio,
-						      sums);
+				ret = btrfs_lookup_bio_sums(root, inode,
+							comp_bio, sums);
+				BUG_ON(ret);
 			}
 			sums += (comp_bio->bi_size + root->sectorsize - 1) /
 				root->sectorsize;
@@ -683,8 +690,10 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
 	ret = btrfs_bio_wq_end_io(root->fs_info, comp_bio, 0);
 	BUG_ON(ret);
 
-	if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM))
-		btrfs_lookup_bio_sums(root, inode, comp_bio, sums);
+	if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) {
+		ret = btrfs_lookup_bio_sums(root, inode, comp_bio, sums);
+		BUG_ON(ret);
+	}
 
 	ret = btrfs_map_bio(root, READ, comp_bio, mirror_num, 0);
 	BUG_ON(ret);
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index b5baff0..84d7ca1 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -147,10 +147,11 @@ noinline void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p)
 struct extent_buffer *btrfs_root_node(struct btrfs_root *root)
 {
 	struct extent_buffer *eb;
-	spin_lock(&root->node_lock);
-	eb = root->node;
+
+	rcu_read_lock();
+	eb = rcu_dereference(root->node);
 	extent_buffer_get(eb);
-	spin_unlock(&root->node_lock);
+	rcu_read_unlock();
 	return eb;
 }
 
@@ -165,14 +166,8 @@ struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root)
 	while (1) {
 		eb = btrfs_root_node(root);
 		btrfs_tree_lock(eb);
-
-		spin_lock(&root->node_lock);
-		if (eb == root->node) {
-			spin_unlock(&root->node_lock);
+		if (eb == root->node)
 			break;
-		}
-		spin_unlock(&root->node_lock);
-
 		btrfs_tree_unlock(eb);
 		free_extent_buffer(eb);
 	}
@@ -458,10 +453,8 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
 		else
 			parent_start = 0;
 
-		spin_lock(&root->node_lock);
-		root->node = cow;
 		extent_buffer_get(cow);
-		spin_unlock(&root->node_lock);
+		rcu_assign_pointer(root->node, cow);
 
 		btrfs_free_tree_block(trans, root, buf, parent_start,
 				      last_ref);
@@ -542,6 +535,9 @@ noinline int btrfs_cow_block(struct btrfs_trans_handle *trans,
 
 	ret = __btrfs_cow_block(trans, root, buf, parent,
 				 parent_slot, cow_ret, search_start, 0);
+
+	trace_btrfs_cow_block(root, buf, *cow_ret);
+
 	return ret;
 }
 
@@ -686,6 +682,8 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans,
 			if (!cur) {
 				cur = read_tree_block(root, blocknr,
 							 blocksize, gen);
+				if (!cur)
+					return -EIO;
 			} else if (!uptodate) {
 				btrfs_read_buffer(cur, gen);
 			}
@@ -732,122 +730,6 @@ static inline unsigned int leaf_data_end(struct btrfs_root *root,
 	return btrfs_item_offset_nr(leaf, nr - 1);
 }
 
-/*
- * extra debugging checks to make sure all the items in a key are
- * well formed and in the proper order
- */
-static int check_node(struct btrfs_root *root, struct btrfs_path *path,
-		      int level)
-{
-	struct extent_buffer *parent = NULL;
-	struct extent_buffer *node = path->nodes[level];
-	struct btrfs_disk_key parent_key;
-	struct btrfs_disk_key node_key;
-	int parent_slot;
-	int slot;
-	struct btrfs_key cpukey;
-	u32 nritems = btrfs_header_nritems(node);
-
-	if (path->nodes[level + 1])
-		parent = path->nodes[level + 1];
-
-	slot = path->slots[level];
-	BUG_ON(nritems == 0);
-	if (parent) {
-		parent_slot = path->slots[level + 1];
-		btrfs_node_key(parent, &parent_key, parent_slot);
-		btrfs_node_key(node, &node_key, 0);
-		BUG_ON(memcmp(&parent_key, &node_key,
-			      sizeof(struct btrfs_disk_key)));
-		BUG_ON(btrfs_node_blockptr(parent, parent_slot) !=
-		       btrfs_header_bytenr(node));
-	}
-	BUG_ON(nritems > BTRFS_NODEPTRS_PER_BLOCK(root));
-	if (slot != 0) {
-		btrfs_node_key_to_cpu(node, &cpukey, slot - 1);
-		btrfs_node_key(node, &node_key, slot);
-		BUG_ON(comp_keys(&node_key, &cpukey) <= 0);
-	}
-	if (slot < nritems - 1) {
-		btrfs_node_key_to_cpu(node, &cpukey, slot + 1);
-		btrfs_node_key(node, &node_key, slot);
-		BUG_ON(comp_keys(&node_key, &cpukey) >= 0);
-	}
-	return 0;
-}
-
-/*
- * extra checking to make sure all the items in a leaf are
- * well formed and in the proper order
- */
-static int check_leaf(struct btrfs_root *root, struct btrfs_path *path,
-		      int level)
-{
-	struct extent_buffer *leaf = path->nodes[level];
-	struct extent_buffer *parent = NULL;
-	int parent_slot;
-	struct btrfs_key cpukey;
-	struct btrfs_disk_key parent_key;
-	struct btrfs_disk_key leaf_key;
-	int slot = path->slots[0];
-
-	u32 nritems = btrfs_header_nritems(leaf);
-
-	if (path->nodes[level + 1])
-		parent = path->nodes[level + 1];
-
-	if (nritems == 0)
-		return 0;
-
-	if (parent) {
-		parent_slot = path->slots[level + 1];
-		btrfs_node_key(parent, &parent_key, parent_slot);
-		btrfs_item_key(leaf, &leaf_key, 0);
-
-		BUG_ON(memcmp(&parent_key, &leaf_key,
-		       sizeof(struct btrfs_disk_key)));
-		BUG_ON(btrfs_node_blockptr(parent, parent_slot) !=
-		       btrfs_header_bytenr(leaf));
-	}
-	if (slot != 0 && slot < nritems - 1) {
-		btrfs_item_key(leaf, &leaf_key, slot);
-		btrfs_item_key_to_cpu(leaf, &cpukey, slot - 1);
-		if (comp_keys(&leaf_key, &cpukey) <= 0) {
-			btrfs_print_leaf(root, leaf);
-			printk(KERN_CRIT "slot %d offset bad key\n", slot);
-			BUG_ON(1);
-		}
-		if (btrfs_item_offset_nr(leaf, slot - 1) !=
-		       btrfs_item_end_nr(leaf, slot)) {
-			btrfs_print_leaf(root, leaf);
-			printk(KERN_CRIT "slot %d offset bad\n", slot);
-			BUG_ON(1);
-		}
-	}
-	if (slot < nritems - 1) {
-		btrfs_item_key(leaf, &leaf_key, slot);
-		btrfs_item_key_to_cpu(leaf, &cpukey, slot + 1);
-		BUG_ON(comp_keys(&leaf_key, &cpukey) >= 0);
-		if (btrfs_item_offset_nr(leaf, slot) !=
-			btrfs_item_end_nr(leaf, slot + 1)) {
-			btrfs_print_leaf(root, leaf);
-			printk(KERN_CRIT "slot %d offset bad\n", slot);
-			BUG_ON(1);
-		}
-	}
-	BUG_ON(btrfs_item_offset_nr(leaf, 0) +
-	       btrfs_item_size_nr(leaf, 0) != BTRFS_LEAF_DATA_SIZE(root));
-	return 0;
-}
-
-static noinline int check_block(struct btrfs_root *root,
-				struct btrfs_path *path, int level)
-{
-	return 0;
-	if (level == 0)
-		return check_leaf(root, path, level);
-	return check_node(root, path, level);
-}
 
 /*
  * search for key in the extent_buffer.  The items start at offset p,
@@ -1046,9 +928,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
 			goto enospc;
 		}
 
-		spin_lock(&root->node_lock);
-		root->node = child;
-		spin_unlock(&root->node_lock);
+		rcu_assign_pointer(root->node, child);
 
 		add_root_to_dirty_list(root);
 		btrfs_tree_unlock(child);
@@ -1188,7 +1068,6 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
 		}
 	}
 	/* double check we haven't messed things up */
-	check_block(root, path, level);
 	if (orig_ptr !=
 	    btrfs_node_blockptr(path->nodes[level], path->slots[level]))
 		BUG();
@@ -1798,12 +1677,6 @@ cow_done:
 		if (!cow)
 			btrfs_unlock_up_safe(p, level + 1);
 
-		ret = check_block(root, p, level);
-		if (ret) {
-			ret = -1;
-			goto done;
-		}
-
 		ret = bin_search(b, key, level, &slot);
 
 		if (level != 0) {
@@ -2130,10 +2003,8 @@ static noinline int insert_new_root(struct btrfs_trans_handle *trans,
 
 	btrfs_mark_buffer_dirty(c);
 
-	spin_lock(&root->node_lock);
 	old = root->node;
-	root->node = c;
-	spin_unlock(&root->node_lock);
+	rcu_assign_pointer(root->node, c);
 
 	/* the super has an extra ref to root->node */
 	free_extent_buffer(old);
@@ -3840,7 +3711,8 @@ int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root
 	unsigned long ptr;
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path)
+		return -ENOMEM;
 	ret = btrfs_insert_empty_item(trans, root, path, cpu_key, data_size);
 	if (!ret) {
 		leaf = path->nodes[0];
@@ -4217,6 +4089,7 @@ find_next_key:
 		}
 		btrfs_set_path_blocking(path);
 		cur = read_node_slot(root, cur, slot);
+		BUG_ON(!cur);
 
 		btrfs_tree_lock(cur);
 
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 7f78cc7..d47ce83 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -28,6 +28,7 @@
 #include <linux/wait.h>
 #include <linux/slab.h>
 #include <linux/kobject.h>
+#include <trace/events/btrfs.h>
 #include <asm/kmap_types.h>
 #include "extent_io.h"
 #include "extent_map.h"
@@ -40,6 +41,7 @@ extern struct kmem_cache *btrfs_trans_handle_cachep;
 extern struct kmem_cache *btrfs_transaction_cachep;
 extern struct kmem_cache *btrfs_bit_radix_cachep;
 extern struct kmem_cache *btrfs_path_cachep;
+extern struct kmem_cache *btrfs_free_space_cachep;
 struct btrfs_ordered_sum;
 
 #define BTRFS_MAGIC "_BHRfS_M"
@@ -782,9 +784,6 @@ struct btrfs_free_cluster {
 	/* first extent starting offset */
 	u64 window_start;
 
-	/* if this cluster simply points at a bitmap in the block group */
-	bool points_to_bitmap;
-
 	struct btrfs_block_group_cache *block_group;
 	/*
 	 * when a cluster is allocated from a block group, we put the
@@ -1283,6 +1282,7 @@ struct btrfs_root {
 #define BTRFS_INODE_NODUMP		(1 << 8)
 #define BTRFS_INODE_NOATIME		(1 << 9)
 #define BTRFS_INODE_DIRSYNC		(1 << 10)
+#define BTRFS_INODE_COMPRESS		(1 << 11)
 
 /* some macros to generate set/get funcs for the struct fields.  This
  * assumes there is a lefoo_to_cpu for every type, so lets make a simple
@@ -2157,6 +2157,8 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans,
 		      u64 root_objectid, u64 owner, u64 offset);
 
 int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len);
+int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache,
+				u64 num_bytes, int reserve, int sinfo);
 int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans,
 				struct btrfs_root *root);
 int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
@@ -2227,10 +2229,12 @@ u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo);
 int btrfs_error_unpin_extent_range(struct btrfs_root *root,
 				   u64 start, u64 end);
 int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr,
-			       u64 num_bytes);
+			       u64 num_bytes, u64 *actual_bytes);
 int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans,
 			    struct btrfs_root *root, u64 type);
+int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range);
 
+int btrfs_init_space_info(struct btrfs_fs_info *fs_info);
 /* ctree.c */
 int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key,
 		     int level, int *slot);
@@ -2392,6 +2396,9 @@ struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
 					  struct btrfs_path *path, u64 dir,
 					  const char *name, u16 name_len,
 					  int mod);
+int verify_dir_item(struct btrfs_root *root,
+		    struct extent_buffer *leaf,
+		    struct btrfs_dir_item *dir_item);
 
 /* orphan.c */
 int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
@@ -2528,7 +2535,7 @@ int btrfs_update_inode(struct btrfs_trans_handle *trans,
 			      struct inode *inode);
 int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode);
 int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode);
-void btrfs_orphan_cleanup(struct btrfs_root *root);
+int btrfs_orphan_cleanup(struct btrfs_root *root);
 void btrfs_orphan_pre_snapshot(struct btrfs_trans_handle *trans,
 				struct btrfs_pending_snapshot *pending,
 				u64 *bytes_to_reserve);
@@ -2536,7 +2543,7 @@ void btrfs_orphan_post_snapshot(struct btrfs_trans_handle *trans,
 				struct btrfs_pending_snapshot *pending);
 void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
 			      struct btrfs_root *root);
-int btrfs_cont_expand(struct inode *inode, loff_t size);
+int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size);
 int btrfs_invalidate_inodes(struct btrfs_root *root);
 void btrfs_add_delayed_iput(struct inode *inode);
 void btrfs_run_delayed_iputs(struct btrfs_root *root);
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index e807b14..bce28f6 100644
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -483,6 +483,8 @@ static noinline int add_delayed_ref_head(struct btrfs_trans_handle *trans,
 	INIT_LIST_HEAD(&head_ref->cluster);
 	mutex_init(&head_ref->mutex);
 
+	trace_btrfs_delayed_ref_head(ref, head_ref, action);
+
 	existing = tree_insert(&delayed_refs->root, &ref->rb_node);
 
 	if (existing) {
@@ -537,6 +539,8 @@ static noinline int add_delayed_tree_ref(struct btrfs_trans_handle *trans,
 	}
 	full_ref->level = level;
 
+	trace_btrfs_delayed_tree_ref(ref, full_ref, action);
+
 	existing = tree_insert(&delayed_refs->root, &ref->rb_node);
 
 	if (existing) {
@@ -591,6 +595,8 @@ static noinline int add_delayed_data_ref(struct btrfs_trans_handle *trans,
 	full_ref->objectid = owner;
 	full_ref->offset = offset;
 
+	trace_btrfs_delayed_data_ref(ref, full_ref, action);
+
 	existing = tree_insert(&delayed_refs->root, &ref->rb_node);
 
 	if (existing) {
diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c
index f0cad5a..c62f02f 100644
--- a/fs/btrfs/dir-item.c
+++ b/fs/btrfs/dir-item.c
@@ -151,7 +151,7 @@ int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
 		ret = PTR_ERR(dir_item);
 		if (ret == -EEXIST)
 			goto second_insert;
-		goto out;
+		goto out_free;
 	}
 
 	leaf = path->nodes[0];
@@ -170,7 +170,7 @@ second_insert:
 	/* FIXME, use some real flag for selecting the extra index */
 	if (root == root->fs_info->tree_root) {
 		ret = 0;
-		goto out;
+		goto out_free;
 	}
 	btrfs_release_path(root, path);
 
@@ -180,7 +180,7 @@ second_insert:
 					name, name_len);
 	if (IS_ERR(dir_item)) {
 		ret2 = PTR_ERR(dir_item);
-		goto out;
+		goto out_free;
 	}
 	leaf = path->nodes[0];
 	btrfs_cpu_key_to_disk(&disk_key, location);
@@ -192,7 +192,9 @@ second_insert:
 	name_ptr = (unsigned long)(dir_item + 1);
 	write_extent_buffer(leaf, name, name_ptr, name_len);
 	btrfs_mark_buffer_dirty(leaf);
-out:
+
+out_free:
+
 	btrfs_free_path(path);
 	if (ret)
 		return ret;
@@ -377,6 +379,9 @@ struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
 
 	leaf = path->nodes[0];
 	dir_item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_dir_item);
+	if (verify_dir_item(root, leaf, dir_item))
+		return NULL;
+
 	total_len = btrfs_item_size_nr(leaf, path->slots[0]);
 	while (cur < total_len) {
 		this_len = sizeof(*dir_item) +
@@ -429,3 +434,35 @@ int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
 	}
 	return ret;
 }
+
+int verify_dir_item(struct btrfs_root *root,
+		    struct extent_buffer *leaf,
+		    struct btrfs_dir_item *dir_item)
+{
+	u16 namelen = BTRFS_NAME_LEN;
+	u8 type = btrfs_dir_type(leaf, dir_item);
+
+	if (type >= BTRFS_FT_MAX) {
+		printk(KERN_CRIT "btrfs: invalid dir item type: %d\n",
+		       (int)type);
+		return 1;
+	}
+
+	if (type == BTRFS_FT_XATTR)
+		namelen = XATTR_NAME_MAX;
+
+	if (btrfs_dir_name_len(leaf, dir_item) > namelen) {
+		printk(KERN_CRIT "btrfS: invalid dir item name len: %u\n",
+		       (unsigned)btrfs_dir_data_len(leaf, dir_item));
+		return 1;
+	}
+
+	/* BTRFS_MAX_XATTR_SIZE is the same for all dir items */
+	if (btrfs_dir_data_len(leaf, dir_item) > BTRFS_MAX_XATTR_SIZE(root)) {
+		printk(KERN_CRIT "btrfs: invalid dir item data len: %u\n",
+		       (unsigned)btrfs_dir_data_len(leaf, dir_item));
+		return 1;
+	}
+
+	return 0;
+}
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 100b07f..d7a7315 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -29,6 +29,7 @@
 #include <linux/crc32c.h>
 #include <linux/slab.h>
 #include <linux/migrate.h>
+#include <asm/unaligned.h>
 #include "compat.h"
 #include "ctree.h"
 #include "disk-io.h"
@@ -198,7 +199,7 @@ u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len)
 
 void btrfs_csum_final(u32 crc, char *result)
 {
-	*(__le32 *)result = ~cpu_to_le32(crc);
+	put_unaligned_le32(~crc, result);
 }
 
 /*
@@ -323,6 +324,7 @@ static int btree_read_extent_buffer_pages(struct btrfs_root *root,
 	int num_copies = 0;
 	int mirror_num = 0;
 
+	clear_bit(EXTENT_BUFFER_CORRUPT, &eb->bflags);
 	io_tree = &BTRFS_I(root->fs_info->btree_inode)->io_tree;
 	while (1) {
 		ret = read_extent_buffer_pages(io_tree, eb, start, 1,
@@ -331,6 +333,14 @@ static int btree_read_extent_buffer_pages(struct btrfs_root *root,
 		    !verify_parent_transid(io_tree, eb, parent_transid))
 			return ret;
 
+		/*
+		 * This buffer's crc is fine, but its contents are corrupted, so
+		 * there is no reason to read the other copies, they won't be
+		 * any less wrong.
+		 */
+		if (test_bit(EXTENT_BUFFER_CORRUPT, &eb->bflags))
+			return ret;
+
 		num_copies = btrfs_num_copies(&root->fs_info->mapping_tree,
 					      eb->start, eb->len);
 		if (num_copies == 1)
@@ -419,6 +429,73 @@ static int check_tree_block_fsid(struct btrfs_root *root,
 	return ret;
 }
 
+#define CORRUPT(reason, eb, root, slot)				\
+	printk(KERN_CRIT "btrfs: corrupt leaf, %s: block=%llu,"	\
+	       "root=%llu, slot=%d\n", reason,			\
+	       (unsigned long long)btrfs_header_bytenr(eb),	\
+	       (unsigned long long)root->objectid, slot)
+
+static noinline int check_leaf(struct btrfs_root *root,
+			       struct extent_buffer *leaf)
+{
+	struct btrfs_key key;
+	struct btrfs_key leaf_key;
+	u32 nritems = btrfs_header_nritems(leaf);
+	int slot;
+
+	if (nritems == 0)
+		return 0;
+
+	/* Check the 0 item */
+	if (btrfs_item_offset_nr(leaf, 0) + btrfs_item_size_nr(leaf, 0) !=
+	    BTRFS_LEAF_DATA_SIZE(root)) {
+		CORRUPT("invalid item offset size pair", leaf, root, 0);
+		return -EIO;
+	}
+
+	/*
+	 * Check to make sure each items keys are in the correct order and their
+	 * offsets make sense.  We only have to loop through nritems-1 because
+	 * we check the current slot against the next slot, which verifies the
+	 * next slot's offset+size makes sense and that the current's slot
+	 * offset is correct.
+	 */
+	for (slot = 0; slot < nritems - 1; slot++) {
+		btrfs_item_key_to_cpu(leaf, &leaf_key, slot);
+		btrfs_item_key_to_cpu(leaf, &key, slot + 1);
+
+		/* Make sure the keys are in the right order */
+		if (btrfs_comp_cpu_keys(&leaf_key, &key) >= 0) {
+			CORRUPT("bad key order", leaf, root, slot);
+			return -EIO;
+		}
+
+		/*
+		 * Make sure the offset and ends are right, remember that the
+		 * item data starts at the end of the leaf and grows towards the
+		 * front.
+		 */
+		if (btrfs_item_offset_nr(leaf, slot) !=
+			btrfs_item_end_nr(leaf, slot + 1)) {
+			CORRUPT("slot offset bad", leaf, root, slot);
+			return -EIO;
+		}
+
+		/*
+		 * Check to make sure that we don't point outside of the leaf,
+		 * just incase all the items are consistent to eachother, but
+		 * all point outside of the leaf.
+		 */
+		if (btrfs_item_end_nr(leaf, slot) >
+		    BTRFS_LEAF_DATA_SIZE(root)) {
+			CORRUPT("slot end outside of leaf", leaf, root, slot);
+			return -EIO;
+		}
+	}
+
+	return 0;
+}
+
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 void btrfs_set_buffer_lockdep_class(struct extent_buffer *eb, int level)
 {
@@ -485,8 +562,20 @@ static int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end,
 	btrfs_set_buffer_lockdep_class(eb, found_level);
 
 	ret = csum_tree_block(root, eb, 1);
-	if (ret)
+	if (ret) {
+		ret = -EIO;
+		goto err;
+	}
+
+	/*
+	 * If this is a leaf block and it is corrupt, set the corrupt bit so
+	 * that we don't try and read the other copies of this block, just
+	 * return -EIO.
+	 */
+	if (found_level == 0 && check_leaf(root, eb)) {
+		set_bit(EXTENT_BUFFER_CORRUPT, &eb->bflags);
 		ret = -EIO;
+	}
 
 	end = min_t(u64, eb->len, PAGE_CACHE_SIZE);
 	end = eb->start + end - 1;
@@ -847,7 +936,6 @@ static const struct address_space_operations btree_aops = {
 	.writepages	= btree_writepages,
 	.releasepage	= btree_releasepage,
 	.invalidatepage = btree_invalidatepage,
-	.sync_page	= block_sync_page,
 #ifdef CONFIG_MIGRATION
 	.migratepage	= btree_migratepage,
 #endif
@@ -1160,7 +1248,10 @@ struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_root *tree_root,
 		     root, fs_info, location->objectid);
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path) {
+		kfree(root);
+		return ERR_PTR(-ENOMEM);
+	}
 	ret = btrfs_search_slot(NULL, tree_root, location, path, 0, 0);
 	if (ret == 0) {
 		l = path->nodes[0];
@@ -1331,82 +1422,6 @@ static int btrfs_congested_fn(void *congested_data, int bdi_bits)
 }
 
 /*
- * this unplugs every device on the box, and it is only used when page
- * is null
- */
-static void __unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
-{
-	struct btrfs_device *device;
-	struct btrfs_fs_info *info;
-
-	info = (struct btrfs_fs_info *)bdi->unplug_io_data;
-	list_for_each_entry(device, &info->fs_devices->devices, dev_list) {
-		if (!device->bdev)
-			continue;
-
-		bdi = blk_get_backing_dev_info(device->bdev);
-		if (bdi->unplug_io_fn)
-			bdi->unplug_io_fn(bdi, page);
-	}
-}
-
-static void btrfs_unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
-{
-	struct inode *inode;
-	struct extent_map_tree *em_tree;
-	struct extent_map *em;
-	struct address_space *mapping;
-	u64 offset;
-
-	/* the generic O_DIRECT read code does this */
-	if (1 || !page) {
-		__unplug_io_fn(bdi, page);
-		return;
-	}
-
-	/*
-	 * page->mapping may change at any time.  Get a consistent copy
-	 * and use that for everything below
-	 */
-	smp_mb();
-	mapping = page->mapping;
-	if (!mapping)
-		return;
-
-	inode = mapping->host;
-
-	/*
-	 * don't do the expensive searching for a small number of
-	 * devices
-	 */
-	if (BTRFS_I(inode)->root->fs_info->fs_devices->open_devices <= 2) {
-		__unplug_io_fn(bdi, page);
-		return;
-	}
-
-	offset = page_offset(page);
-
-	em_tree = &BTRFS_I(inode)->extent_tree;
-	read_lock(&em_tree->lock);
-	em = lookup_extent_mapping(em_tree, offset, PAGE_CACHE_SIZE);
-	read_unlock(&em_tree->lock);
-	if (!em) {
-		__unplug_io_fn(bdi, page);
-		return;
-	}
-
-	if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
-		free_extent_map(em);
-		__unplug_io_fn(bdi, page);
-		return;
-	}
-	offset = offset - em->start;
-	btrfs_unplug_page(&BTRFS_I(inode)->root->fs_info->mapping_tree,
-			  em->block_start + offset, page);
-	free_extent_map(em);
-}
-
-/*
  * If this fails, caller must call bdi_destroy() to get rid of the
  * bdi again.
  */
@@ -1420,8 +1435,6 @@ static int setup_bdi(struct btrfs_fs_info *info, struct backing_dev_info *bdi)
 		return err;
 
 	bdi->ra_pages	= default_backing_dev_info.ra_pages;
-	bdi->unplug_io_fn	= btrfs_unplug_io_fn;
-	bdi->unplug_io_data	= info;
 	bdi->congested_fn	= btrfs_congested_fn;
 	bdi->congested_data	= info;
 	return 0;
@@ -1632,6 +1645,8 @@ struct btrfs_root *open_ctree(struct super_block *sb,
 		goto fail_bdi;
 	}
 
+	fs_info->btree_inode->i_mapping->flags &= ~__GFP_FS;
+
 	INIT_RADIX_TREE(&fs_info->fs_roots_radix, GFP_ATOMIC);
 	INIT_LIST_HEAD(&fs_info->trans_list);
 	INIT_LIST_HEAD(&fs_info->dead_roots);
@@ -1762,6 +1777,12 @@ struct btrfs_root *open_ctree(struct super_block *sb,
 
 	btrfs_check_super_valid(fs_info, sb->s_flags & MS_RDONLY);
 
+	/*
+	 * In the long term, we'll store the compression type in the super
+	 * block, and it'll be used for per file compression control.
+	 */
+	fs_info->compress_type = BTRFS_COMPRESS_ZLIB;
+
 	ret = btrfs_parse_options(tree_root, options);
 	if (ret) {
 		err = ret;
@@ -1967,6 +1988,12 @@ struct btrfs_root *open_ctree(struct super_block *sb,
 	fs_info->metadata_alloc_profile = (u64)-1;
 	fs_info->system_alloc_profile = fs_info->metadata_alloc_profile;
 
+	ret = btrfs_init_space_info(fs_info);
+	if (ret) {
+		printk(KERN_ERR "Failed to initial space info: %d\n", ret);
+		goto fail_block_groups;
+	}
+
 	ret = btrfs_read_block_groups(extent_root);
 	if (ret) {
 		printk(KERN_ERR "Failed to read block groups: %d\n", ret);
@@ -2058,9 +2085,14 @@ struct btrfs_root *open_ctree(struct super_block *sb,
 
 	if (!(sb->s_flags & MS_RDONLY)) {
 		down_read(&fs_info->cleanup_work_sem);
-		btrfs_orphan_cleanup(fs_info->fs_root);
-		btrfs_orphan_cleanup(fs_info->tree_root);
+		err = btrfs_orphan_cleanup(fs_info->fs_root);
+		if (!err)
+			err = btrfs_orphan_cleanup(fs_info->tree_root);
 		up_read(&fs_info->cleanup_work_sem);
+		if (err) {
+			close_ctree(tree_root);
+			return ERR_PTR(err);
+		}
 	}
 
 	return tree_root;
@@ -2435,8 +2467,12 @@ int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info)
 
 		root_objectid = gang[ret - 1]->root_key.objectid + 1;
 		for (i = 0; i < ret; i++) {
+			int err;
+
 			root_objectid = gang[i]->root_key.objectid;
-			btrfs_orphan_cleanup(gang[i]);
+			err = btrfs_orphan_cleanup(gang[i]);
+			if (err)
+				return err;
 		}
 		root_objectid++;
 	}
@@ -2947,7 +2983,10 @@ static int btrfs_destroy_pinned_extent(struct btrfs_root *root,
 			break;
 
 		/* opt_discard */
-		ret = btrfs_error_discard_extent(root, start, end + 1 - start);
+		if (btrfs_test_opt(root, DISCARD))
+			ret = btrfs_error_discard_extent(root, start,
+							 end + 1 - start,
+							 NULL);
 
 		clear_extent_dirty(unpin, start, end, GFP_NOFS);
 		btrfs_error_unpin_extent_range(root, start, end);
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 7b3089b..f619c3c 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -36,8 +36,6 @@
 static int update_block_group(struct btrfs_trans_handle *trans,
 			      struct btrfs_root *root,
 			      u64 bytenr, u64 num_bytes, int alloc);
-static int update_reserved_bytes(struct btrfs_block_group_cache *cache,
-				 u64 num_bytes, int reserve, int sinfo);
 static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
 				struct btrfs_root *root,
 				u64 bytenr, u64 num_bytes, u64 parent,
@@ -442,7 +440,7 @@ static int cache_block_group(struct btrfs_block_group_cache *cache,
 	 * allocate blocks for the tree root we can't do the fast caching since
 	 * we likely hold important locks.
 	 */
-	if (!trans->transaction->in_commit &&
+	if (trans && (!trans->transaction->in_commit) &&
 	    (root && root != root->fs_info->tree_root)) {
 		spin_lock(&cache->lock);
 		if (cache->cached != BTRFS_CACHE_NO) {
@@ -471,7 +469,7 @@ static int cache_block_group(struct btrfs_block_group_cache *cache,
 	if (load_cache_only)
 		return 0;
 
-	caching_ctl = kzalloc(sizeof(*caching_ctl), GFP_KERNEL);
+	caching_ctl = kzalloc(sizeof(*caching_ctl), GFP_NOFS);
 	BUG_ON(!caching_ctl);
 
 	INIT_LIST_HEAD(&caching_ctl->list);
@@ -1740,39 +1738,45 @@ static int remove_extent_backref(struct btrfs_trans_handle *trans,
 	return ret;
 }
 
-static void btrfs_issue_discard(struct block_device *bdev,
+static int btrfs_issue_discard(struct block_device *bdev,
 				u64 start, u64 len)
 {
-	blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_KERNEL, 0);
+	return blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_NOFS, 0);
 }
 
 static int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr,
-				u64 num_bytes)
+				u64 num_bytes, u64 *actual_bytes)
 {
 	int ret;
-	u64 map_length = num_bytes;
+	u64 discarded_bytes = 0;
 	struct btrfs_multi_bio *multi = NULL;
 
-	if (!btrfs_test_opt(root, DISCARD))
-		return 0;
 
 	/* Tell the block device(s) that the sectors can be discarded */
-	ret = btrfs_map_block(&root->fs_info->mapping_tree, READ,
-			      bytenr, &map_length, &multi, 0);
+	ret = btrfs_map_block(&root->fs_info->mapping_tree, REQ_DISCARD,
+			      bytenr, &num_bytes, &multi, 0);
 	if (!ret) {
 		struct btrfs_bio_stripe *stripe = multi->stripes;
 		int i;
 
-		if (map_length > num_bytes)
-			map_length = num_bytes;
 
 		for (i = 0; i < multi->num_stripes; i++, stripe++) {
-			btrfs_issue_discard(stripe->dev->bdev,
-					    stripe->physical,
-					    map_length);
+			ret = btrfs_issue_discard(stripe->dev->bdev,
+						  stripe->physical,
+						  stripe->length);
+			if (!ret)
+				discarded_bytes += stripe->length;
+			else if (ret != -EOPNOTSUPP)
+				break;
 		}
 		kfree(multi);
 	}
+	if (discarded_bytes && ret == -EOPNOTSUPP)
+		ret = 0;
+
+	if (actual_bytes)
+		*actual_bytes = discarded_bytes;
+
 
 	return ret;
 }
@@ -3996,6 +4000,7 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
 	struct btrfs_block_rsv *block_rsv = &root->fs_info->delalloc_block_rsv;
 	u64 to_reserve;
 	int nr_extents;
+	int reserved_extents;
 	int ret;
 
 	if (btrfs_transaction_in_commit(root->fs_info))
@@ -4003,25 +4008,24 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
 
 	num_bytes = ALIGN(num_bytes, root->sectorsize);
 
-	spin_lock(&BTRFS_I(inode)->accounting_lock);
 	nr_extents = atomic_read(&BTRFS_I(inode)->outstanding_extents) + 1;
-	if (nr_extents > BTRFS_I(inode)->reserved_extents) {
-		nr_extents -= BTRFS_I(inode)->reserved_extents;
+	reserved_extents = atomic_read(&BTRFS_I(inode)->reserved_extents);
+
+	if (nr_extents > reserved_extents) {
+		nr_extents -= reserved_extents;
 		to_reserve = calc_trans_metadata_size(root, nr_extents);
 	} else {
 		nr_extents = 0;
 		to_reserve = 0;
 	}
-	spin_unlock(&BTRFS_I(inode)->accounting_lock);
+
 	to_reserve += calc_csum_metadata_size(inode, num_bytes);
 	ret = reserve_metadata_bytes(NULL, root, block_rsv, to_reserve, 1);
 	if (ret)
 		return ret;
 
-	spin_lock(&BTRFS_I(inode)->accounting_lock);
-	BTRFS_I(inode)->reserved_extents += nr_extents;
+	atomic_add(nr_extents, &BTRFS_I(inode)->reserved_extents);
 	atomic_inc(&BTRFS_I(inode)->outstanding_extents);
-	spin_unlock(&BTRFS_I(inode)->accounting_lock);
 
 	block_rsv_add_bytes(block_rsv, to_reserve, 1);
 
@@ -4036,20 +4040,30 @@ void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes)
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	u64 to_free;
 	int nr_extents;
+	int reserved_extents;
 
 	num_bytes = ALIGN(num_bytes, root->sectorsize);
 	atomic_dec(&BTRFS_I(inode)->outstanding_extents);
 	WARN_ON(atomic_read(&BTRFS_I(inode)->outstanding_extents) < 0);
 
-	spin_lock(&BTRFS_I(inode)->accounting_lock);
-	nr_extents = atomic_read(&BTRFS_I(inode)->outstanding_extents);
-	if (nr_extents < BTRFS_I(inode)->reserved_extents) {
-		nr_extents = BTRFS_I(inode)->reserved_extents - nr_extents;
-		BTRFS_I(inode)->reserved_extents -= nr_extents;
-	} else {
-		nr_extents = 0;
-	}
-	spin_unlock(&BTRFS_I(inode)->accounting_lock);
+	reserved_extents = atomic_read(&BTRFS_I(inode)->reserved_extents);
+	do {
+		int old, new;
+
+		nr_extents = atomic_read(&BTRFS_I(inode)->outstanding_extents);
+		if (nr_extents >= reserved_extents) {
+			nr_extents = 0;
+			break;
+		}
+		old = reserved_extents;
+		nr_extents = reserved_extents - nr_extents;
+		new = reserved_extents - nr_extents;
+		old = atomic_cmpxchg(&BTRFS_I(inode)->reserved_extents,
+				     reserved_extents, new);
+		if (likely(old == reserved_extents))
+			break;
+		reserved_extents = old;
+	} while (1);
 
 	to_free = calc_csum_metadata_size(inode, num_bytes);
 	if (nr_extents > 0)
@@ -4223,8 +4237,8 @@ int btrfs_pin_extent(struct btrfs_root *root,
  * update size of reserved extents. this function may return -EAGAIN
  * if 'reserve' is true or 'sinfo' is false.
  */
-static int update_reserved_bytes(struct btrfs_block_group_cache *cache,
-				 u64 num_bytes, int reserve, int sinfo)
+int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache,
+				u64 num_bytes, int reserve, int sinfo)
 {
 	int ret = 0;
 	if (sinfo) {
@@ -4363,7 +4377,9 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
 		if (ret)
 			break;
 
-		ret = btrfs_discard_extent(root, start, end + 1 - start);
+		if (btrfs_test_opt(root, DISCARD))
+			ret = btrfs_discard_extent(root, start,
+						   end + 1 - start, NULL);
 
 		clear_extent_dirty(unpin, start, end, GFP_NOFS);
 		unpin_extent_range(root, start, end);
@@ -4704,10 +4720,10 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
 		WARN_ON(test_bit(EXTENT_BUFFER_DIRTY, &buf->bflags));
 
 		btrfs_add_free_space(cache, buf->start, buf->len);
-		ret = update_reserved_bytes(cache, buf->len, 0, 0);
+		ret = btrfs_update_reserved_bytes(cache, buf->len, 0, 0);
 		if (ret == -EAGAIN) {
 			/* block group became read-only */
-			update_reserved_bytes(cache, buf->len, 0, 1);
+			btrfs_update_reserved_bytes(cache, buf->len, 0, 1);
 			goto out;
 		}
 
@@ -4744,6 +4760,11 @@ pin:
 		}
 	}
 out:
+	/*
+	 * Deleting the buffer, clear the corrupt flag since it doesn't matter
+	 * anymore.
+	 */
+	clear_bit(EXTENT_BUFFER_CORRUPT, &buf->bflags);
 	btrfs_put_block_group(cache);
 }
 
@@ -5191,7 +5212,7 @@ checks:
 					     search_start - offset);
 		BUG_ON(offset > search_start);
 
-		ret = update_reserved_bytes(block_group, num_bytes, 1,
+		ret = btrfs_update_reserved_bytes(block_group, num_bytes, 1,
 					    (data & BTRFS_BLOCK_GROUP_DATA));
 		if (ret == -EAGAIN) {
 			btrfs_add_free_space(block_group, offset, num_bytes);
@@ -5397,6 +5418,8 @@ again:
 		dump_space_info(sinfo, num_bytes, 1);
 	}
 
+	trace_btrfs_reserved_extent_alloc(root, ins->objectid, ins->offset);
+
 	return ret;
 }
 
@@ -5412,12 +5435,15 @@ int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len)
 		return -ENOSPC;
 	}
 
-	ret = btrfs_discard_extent(root, start, len);
+	if (btrfs_test_opt(root, DISCARD))
+		ret = btrfs_discard_extent(root, start, len, NULL);
 
 	btrfs_add_free_space(cache, start, len);
-	update_reserved_bytes(cache, len, 0, 1);
+	btrfs_update_reserved_bytes(cache, len, 0, 1);
 	btrfs_put_block_group(cache);
 
+	trace_btrfs_reserved_extent_free(root, start, len);
+
 	return ret;
 }
 
@@ -5444,7 +5470,8 @@ static int alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
 	size = sizeof(*extent_item) + btrfs_extent_inline_ref_size(type);
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path)
+		return -ENOMEM;
 
 	path->leave_spinning = 1;
 	ret = btrfs_insert_empty_item(trans, fs_info->extent_root, path,
@@ -5614,7 +5641,7 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
 		put_caching_control(caching_ctl);
 	}
 
-	ret = update_reserved_bytes(block_group, ins->offset, 1, 1);
+	ret = btrfs_update_reserved_bytes(block_group, ins->offset, 1, 1);
 	BUG_ON(ret);
 	btrfs_put_block_group(block_group);
 	ret = alloc_reserved_file_extent(trans, root, 0, root_objectid,
@@ -6047,6 +6074,8 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
 		if (reada && level == 1)
 			reada_walk_down(trans, root, wc, path);
 		next = read_tree_block(root, bytenr, blocksize, generation);
+		if (!next)
+			return -EIO;
 		btrfs_tree_lock(next);
 		btrfs_set_lock_blocking(next);
 	}
@@ -6438,10 +6467,14 @@ int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
 	BUG_ON(root->root_key.objectid != BTRFS_TREE_RELOC_OBJECTID);
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path)
+		return -ENOMEM;
 
 	wc = kzalloc(sizeof(*wc), GFP_NOFS);
-	BUG_ON(!wc);
+	if (!wc) {
+		btrfs_free_path(path);
+		return -ENOMEM;
+	}
 
 	btrfs_assert_tree_locked(parent);
 	parent_level = btrfs_header_level(parent);
@@ -6899,7 +6932,11 @@ static noinline int get_new_locations(struct inode *reloc_inode,
 	}
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path) {
+		if (exts != *extents)
+			kfree(exts);
+		return -ENOMEM;
+	}
 
 	cur_pos = extent_key->objectid - offset;
 	last_byte = extent_key->objectid + extent_key->offset;
@@ -6941,6 +6978,10 @@ static noinline int get_new_locations(struct inode *reloc_inode,
 			struct disk_extent *old = exts;
 			max *= 2;
 			exts = kzalloc(sizeof(*exts) * max, GFP_NOFS);
+			if (!exts) {
+				ret = -ENOMEM;
+				goto out;
+			}
 			memcpy(exts, old, sizeof(*exts) * nr);
 			if (old != *extents)
 				kfree(old);
@@ -7423,7 +7464,8 @@ static noinline int replace_extents_in_leaf(struct btrfs_trans_handle *trans,
 	int ret;
 
 	new_extent = kmalloc(sizeof(*new_extent), GFP_NOFS);
-	BUG_ON(!new_extent);
+	if (!new_extent)
+		return -ENOMEM;
 
 	ref = btrfs_lookup_leaf_ref(root, leaf->start);
 	BUG_ON(!ref);
@@ -7609,7 +7651,8 @@ int btrfs_cleanup_reloc_trees(struct btrfs_root *root)
 
 	reloc_root = btrfs_read_fs_root_no_name(root->fs_info, &location);
 	BUG_ON(!reloc_root);
-	btrfs_orphan_cleanup(reloc_root);
+	ret = btrfs_orphan_cleanup(reloc_root);
+	BUG_ON(ret);
 	return 0;
 }
 
@@ -7627,7 +7670,8 @@ static noinline int init_reloc_tree(struct btrfs_trans_handle *trans,
 		return 0;
 
 	root_item = kmalloc(sizeof(*root_item), GFP_NOFS);
-	BUG_ON(!root_item);
+	if (!root_item)
+		return -ENOMEM;
 
 	ret = btrfs_copy_root(trans, root, root->commit_root,
 			      &eb, BTRFS_TREE_RELOC_OBJECTID);
@@ -7653,7 +7697,7 @@ static noinline int init_reloc_tree(struct btrfs_trans_handle *trans,
 
 	reloc_root = btrfs_read_fs_root_no_radix(root->fs_info->tree_root,
 						 &root_key);
-	BUG_ON(!reloc_root);
+	BUG_ON(IS_ERR(reloc_root));
 	reloc_root->last_trans = trans->transid;
 	reloc_root->commit_root = NULL;
 	reloc_root->ref_tree = &root->fs_info->reloc_ref_tree;
@@ -7906,6 +7950,10 @@ static noinline int relocate_one_extent(struct btrfs_root *extent_root,
 
 			eb = read_tree_block(found_root, block_start,
 					     block_size, 0);
+			if (!eb) {
+				ret = -EIO;
+				goto out;
+			}
 			btrfs_tree_lock(eb);
 			BUG_ON(level != btrfs_header_level(eb));
 
@@ -8621,6 +8669,12 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
 	BUG_ON(!block_group);
 	BUG_ON(!block_group->ro);
 
+	/*
+	 * Free the reserved super bytes from this block group before
+	 * remove it.
+	 */
+	free_excluded_extents(root, block_group);
+
 	memcpy(&key, &block_group->key, sizeof(key));
 	if (block_group->flags & (BTRFS_BLOCK_GROUP_DUP |
 				  BTRFS_BLOCK_GROUP_RAID1 |
@@ -8724,13 +8778,84 @@ out:
 	return ret;
 }
 
+int btrfs_init_space_info(struct btrfs_fs_info *fs_info)
+{
+	struct btrfs_space_info *space_info;
+	int ret;
+
+	ret = update_space_info(fs_info, BTRFS_BLOCK_GROUP_SYSTEM, 0, 0,
+								 &space_info);
+	if (ret)
+		return ret;
+
+	ret = update_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA, 0, 0,
+								 &space_info);
+	if (ret)
+		return ret;
+
+	ret = update_space_info(fs_info, BTRFS_BLOCK_GROUP_DATA, 0, 0,
+								 &space_info);
+	if (ret)
+		return ret;
+
+	return ret;
+}
+
 int btrfs_error_unpin_extent_range(struct btrfs_root *root, u64 start, u64 end)
 {
 	return unpin_extent_range(root, start, end);
 }
 
 int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr,
-			       u64 num_bytes)
+			       u64 num_bytes, u64 *actual_bytes)
+{
+	return btrfs_discard_extent(root, bytenr, num_bytes, actual_bytes);
+}
+
+int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range)
 {
-	return btrfs_discard_extent(root, bytenr, num_bytes);
+	struct btrfs_fs_info *fs_info = root->fs_info;
+	struct btrfs_block_group_cache *cache = NULL;
+	u64 group_trimmed;
+	u64 start;
+	u64 end;
+	u64 trimmed = 0;
+	int ret = 0;
+
+	cache = btrfs_lookup_block_group(fs_info, range->start);
+
+	while (cache) {
+		if (cache->key.objectid >= (range->start + range->len)) {
+			btrfs_put_block_group(cache);
+			break;
+		}
+
+		start = max(range->start, cache->key.objectid);
+		end = min(range->start + range->len,
+				cache->key.objectid + cache->key.offset);
+
+		if (end - start >= range->minlen) {
+			if (!block_group_cache_done(cache)) {
+				ret = cache_block_group(cache, NULL, root, 0);
+				if (!ret)
+					wait_block_group_cache_done(cache);
+			}
+			ret = btrfs_trim_block_group(cache,
+						     &group_trimmed,
+						     start,
+						     end,
+						     range->minlen);
+
+			trimmed += group_trimmed;
+			if (ret) {
+				btrfs_put_block_group(cache);
+				break;
+			}
+		}
+
+		cache = next_block_group(fs_info->tree_root, cache);
+	}
+
+	range->len = trimmed;
+	return ret;
 }
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 714adc4..20ddb28 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2188,10 +2188,12 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc,
 	unsigned long nr_written = 0;
 
 	if (wbc->sync_mode == WB_SYNC_ALL)
-		write_flags = WRITE_SYNC_PLUG;
+		write_flags = WRITE_SYNC;
 	else
 		write_flags = WRITE;
 
+	trace___extent_writepage(page, inode, wbc);
+
 	WARN_ON(!PageLocked(page));
 	pg_offset = i_size & (PAGE_CACHE_SIZE - 1);
 	if (page->index > end_index ||
@@ -3690,6 +3692,7 @@ int map_private_extent_buffer(struct extent_buffer *eb, unsigned long start,
 		       "wanted %lu %lu\n", (unsigned long long)eb->start,
 		       eb->len, start, min_len);
 		WARN_ON(1);
+		return -EINVAL;
 	}
 
 	p = extent_buffer_page(eb, i);
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 9318dfe..f62c5442 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -31,6 +31,7 @@
 #define EXTENT_BUFFER_UPTODATE 0
 #define EXTENT_BUFFER_BLOCKING 1
 #define EXTENT_BUFFER_DIRTY 2
+#define EXTENT_BUFFER_CORRUPT 3
 
 /* these are flags for extent_clear_unlock_delalloc */
 #define EXTENT_CLEAR_UNLOCK_PAGE 0x1
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 4f19a3e..a6a9d4e 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -48,7 +48,8 @@ int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
 	struct extent_buffer *leaf;
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path)
+		return -ENOMEM;
 	file_key.objectid = objectid;
 	file_key.offset = pos;
 	btrfs_set_key_type(&file_key, BTRFS_EXTENT_DATA_KEY);
@@ -169,6 +170,8 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
 	struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
 
 	path = btrfs_alloc_path();
+	if (!path)
+		return -ENOMEM;
 	if (bio->bi_size > PAGE_CACHE_SIZE * 8)
 		path->reada = 2;
 
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index f447b78..656bc0a 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -45,14 +45,14 @@
  * and be replaced with calls into generic code.
  */
 static noinline int btrfs_copy_from_user(loff_t pos, int num_pages,
-					 int write_bytes,
+					 size_t write_bytes,
 					 struct page **prepared_pages,
 					 struct iov_iter *i)
 {
 	size_t copied = 0;
+	size_t total_copied = 0;
 	int pg = 0;
 	int offset = pos & (PAGE_CACHE_SIZE - 1);
-	int total_copied = 0;
 
 	while (write_bytes > 0) {
 		size_t count = min_t(size_t,
@@ -88,9 +88,8 @@ static noinline int btrfs_copy_from_user(loff_t pos, int num_pages,
 		total_copied += copied;
 
 		/* Return to btrfs_file_aio_write to fault page */
-		if (unlikely(copied == 0)) {
+		if (unlikely(copied == 0))
 			break;
-		}
 
 		if (unlikely(copied < PAGE_CACHE_SIZE - offset)) {
 			offset += copied;
@@ -109,8 +108,6 @@ static noinline void btrfs_drop_pages(struct page **pages, size_t num_pages)
 {
 	size_t i;
 	for (i = 0; i < num_pages; i++) {
-		if (!pages[i])
-			break;
 		/* page checked is some magic around finding pages that
 		 * have been modified without going through btrfs_set_page_dirty
 		 * clear it here
@@ -130,13 +127,12 @@ static noinline void btrfs_drop_pages(struct page **pages, size_t num_pages)
  * this also makes the decision about creating an inline extent vs
  * doing real data extents, marking pages dirty and delalloc as required.
  */
-static noinline int dirty_and_release_pages(struct btrfs_trans_handle *trans,
-				   struct btrfs_root *root,
-				   struct file *file,
-				   struct page **pages,
-				   size_t num_pages,
-				   loff_t pos,
-				   size_t write_bytes)
+static noinline int dirty_and_release_pages(struct btrfs_root *root,
+					    struct file *file,
+					    struct page **pages,
+					    size_t num_pages,
+					    loff_t pos,
+					    size_t write_bytes)
 {
 	int err = 0;
 	int i;
@@ -154,7 +150,8 @@ static noinline int dirty_and_release_pages(struct btrfs_trans_handle *trans,
 	end_of_last_block = start_pos + num_bytes - 1;
 	err = btrfs_set_extent_delalloc(inode, start_pos, end_of_last_block,
 					NULL);
-	BUG_ON(err);
+	if (err)
+		return err;
 
 	for (i = 0; i < num_pages; i++) {
 		struct page *p = pages[i];
@@ -162,13 +159,14 @@ static noinline int dirty_and_release_pages(struct btrfs_trans_handle *trans,
 		ClearPageChecked(p);
 		set_page_dirty(p);
 	}
-	if (end_pos > isize) {
+
+	/*
+	 * we've only changed i_size in ram, and we haven't updated
+	 * the disk i_size.  There is no need to log the inode
+	 * at this time.
+	 */
+	if (end_pos > isize)
 		i_size_write(inode, end_pos);
-		/* we've only changed i_size in ram, and we haven't updated
-		 * the disk i_size.  There is no need to log the inode
-		 * at this time.
-		 */
-	}
 	return 0;
 }
 
@@ -610,6 +608,8 @@ again:
 	key.offset = split;
 
 	ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
+	if (ret < 0)
+		goto out;
 	if (ret > 0 && path->slots[0] > 0)
 		path->slots[0]--;
 
@@ -819,12 +819,11 @@ static noinline int prepare_pages(struct btrfs_root *root, struct file *file,
 	last_pos = ((u64)index + num_pages) << PAGE_CACHE_SHIFT;
 
 	if (start_pos > inode->i_size) {
-		err = btrfs_cont_expand(inode, start_pos);
+		err = btrfs_cont_expand(inode, i_size_read(inode), start_pos);
 		if (err)
 			return err;
 	}
 
-	memset(pages, 0, num_pages * sizeof(struct page *));
 again:
 	for (i = 0; i < num_pages; i++) {
 		pages[i] = grab_cache_page(inode->i_mapping, index + i);
@@ -896,156 +895,71 @@ fail:
 
 }
 
-static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
-				    const struct iovec *iov,
-				    unsigned long nr_segs, loff_t pos)
+static noinline ssize_t __btrfs_buffered_write(struct file *file,
+					       struct iov_iter *i,
+					       loff_t pos)
 {
-	struct file *file = iocb->ki_filp;
 	struct inode *inode = fdentry(file)->d_inode;
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	struct page **pages = NULL;
-	struct iov_iter i;
-	loff_t *ppos = &iocb->ki_pos;
-	loff_t start_pos;
-	ssize_t num_written = 0;
-	ssize_t err = 0;
-	size_t count;
-	size_t ocount;
-	int ret = 0;
-	int nrptrs;
 	unsigned long first_index;
 	unsigned long last_index;
-	int will_write;
-	int buffered = 0;
-	int copied = 0;
-	int dirty_pages = 0;
-
-	will_write = ((file->f_flags & O_DSYNC) || IS_SYNC(inode) ||
-		      (file->f_flags & O_DIRECT));
-
-	start_pos = pos;
-
-	vfs_check_frozen(inode->i_sb, SB_FREEZE_WRITE);
-
-	mutex_lock(&inode->i_mutex);
-
-	err = generic_segment_checks(iov, &nr_segs, &ocount, VERIFY_READ);
-	if (err)
-		goto out;
-	count = ocount;
-
-	current->backing_dev_info = inode->i_mapping->backing_dev_info;
-	err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));
-	if (err)
-		goto out;
-
-	if (count == 0)
-		goto out;
-
-	err = file_remove_suid(file);
-	if (err)
-		goto out;
-
-	/*
-	 * If BTRFS flips readonly due to some impossible error
-	 * (fs_info->fs_state now has BTRFS_SUPER_FLAG_ERROR),
-	 * although we have opened a file as writable, we have
-	 * to stop this write operation to ensure FS consistency.
-	 */
-	if (root->fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR) {
-		err = -EROFS;
-		goto out;
-	}
-
-	file_update_time(file);
-	BTRFS_I(inode)->sequence++;
-
-	if (unlikely(file->f_flags & O_DIRECT)) {
-		num_written = generic_file_direct_write(iocb, iov, &nr_segs,
-							pos, ppos, count,
-							ocount);
-		/*
-		 * the generic O_DIRECT will update in-memory i_size after the
-		 * DIOs are done.  But our endio handlers that update the on
-		 * disk i_size never update past the in memory i_size.  So we
-		 * need one more update here to catch any additions to the
-		 * file
-		 */
-		if (inode->i_size != BTRFS_I(inode)->disk_i_size) {
-			btrfs_ordered_update_i_size(inode, inode->i_size, NULL);
-			mark_inode_dirty(inode);
-		}
-
-		if (num_written < 0) {
-			ret = num_written;
-			num_written = 0;
-			goto out;
-		} else if (num_written == count) {
-			/* pick up pos changes done by the generic code */
-			pos = *ppos;
-			goto out;
-		}
-		/*
-		 * We are going to do buffered for the rest of the range, so we
-		 * need to make sure to invalidate the buffered pages when we're
-		 * done.
-		 */
-		buffered = 1;
-		pos += num_written;
-	}
+	size_t num_written = 0;
+	int nrptrs;
+	int ret;
 
-	iov_iter_init(&i, iov, nr_segs, count, num_written);
-	nrptrs = min((iov_iter_count(&i) + PAGE_CACHE_SIZE - 1) /
+	nrptrs = min((iov_iter_count(i) + PAGE_CACHE_SIZE - 1) /
 		     PAGE_CACHE_SIZE, PAGE_CACHE_SIZE /
 		     (sizeof(struct page *)));
 	pages = kmalloc(nrptrs * sizeof(struct page *), GFP_KERNEL);
-	if (!pages) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	/* generic_write_checks can change our pos */
-	start_pos = pos;
+	if (!pages)
+		return -ENOMEM;
 
 	first_index = pos >> PAGE_CACHE_SHIFT;
-	last_index = (pos + iov_iter_count(&i)) >> PAGE_CACHE_SHIFT;
+	last_index = (pos + iov_iter_count(i)) >> PAGE_CACHE_SHIFT;
 
-	while (iov_iter_count(&i) > 0) {
+	while (iov_iter_count(i) > 0) {
 		size_t offset = pos & (PAGE_CACHE_SIZE - 1);
-		size_t write_bytes = min(iov_iter_count(&i),
+		size_t write_bytes = min(iov_iter_count(i),
 					 nrptrs * (size_t)PAGE_CACHE_SIZE -
 					 offset);
 		size_t num_pages = (write_bytes + offset +
 				    PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
+		size_t dirty_pages;
+		size_t copied;
 
 		WARN_ON(num_pages > nrptrs);
-		memset(pages, 0, sizeof(struct page *) * nrptrs);
 
 		/*
 		 * Fault pages before locking them in prepare_pages
 		 * to avoid recursive lock
 		 */
-		if (unlikely(iov_iter_fault_in_readable(&i, write_bytes))) {
+		if (unlikely(iov_iter_fault_in_readable(i, write_bytes))) {
 			ret = -EFAULT;
-			goto out;
+			break;
 		}
 
 		ret = btrfs_delalloc_reserve_space(inode,
 					num_pages << PAGE_CACHE_SHIFT);
 		if (ret)
-			goto out;
+			break;
 
+		/*
+		 * This is going to setup the pages array with the number of
+		 * pages we want, so we don't really need to worry about the
+		 * contents of pages from loop to loop
+		 */
 		ret = prepare_pages(root, file, pages, num_pages,
 				    pos, first_index, last_index,
 				    write_bytes);
 		if (ret) {
 			btrfs_delalloc_release_space(inode,
 					num_pages << PAGE_CACHE_SHIFT);
-			goto out;
+			break;
 		}
 
 		copied = btrfs_copy_from_user(pos, num_pages,
-					   write_bytes, pages, &i);
+					   write_bytes, pages, i);
 
 		/*
 		 * if we have trouble faulting in the pages, fall
@@ -1061,6 +975,13 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
 				       PAGE_CACHE_SIZE - 1) >>
 				       PAGE_CACHE_SHIFT;
 
+		/*
+		 * If we had a short copy we need to release the excess delaloc
+		 * bytes we reserved.  We need to increment outstanding_extents
+		 * because btrfs_delalloc_release_space will decrement it, but
+		 * we still have an outstanding extent for the chunk we actually
+		 * managed to copy.
+		 */
 		if (num_pages > dirty_pages) {
 			if (copied > 0)
 				atomic_inc(
@@ -1071,39 +992,157 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
 		}
 
 		if (copied > 0) {
-			dirty_and_release_pages(NULL, root, file, pages,
-						dirty_pages, pos, copied);
+			ret = dirty_and_release_pages(root, file, pages,
+						      dirty_pages, pos,
+						      copied);
+			if (ret) {
+				btrfs_delalloc_release_space(inode,
+					dirty_pages << PAGE_CACHE_SHIFT);
+				btrfs_drop_pages(pages, num_pages);
+				break;
+			}
 		}
 
 		btrfs_drop_pages(pages, num_pages);
 
-		if (copied > 0) {
-			if (will_write) {
-				filemap_fdatawrite_range(inode->i_mapping, pos,
-							 pos + copied - 1);
-			} else {
-				balance_dirty_pages_ratelimited_nr(
-							inode->i_mapping,
-							dirty_pages);
-				if (dirty_pages <
-				(root->leafsize >> PAGE_CACHE_SHIFT) + 1)
-					btrfs_btree_balance_dirty(root, 1);
-				btrfs_throttle(root);
-			}
-		}
+		cond_resched();
+
+		balance_dirty_pages_ratelimited_nr(inode->i_mapping,
+						   dirty_pages);
+		if (dirty_pages < (root->leafsize >> PAGE_CACHE_SHIFT) + 1)
+			btrfs_btree_balance_dirty(root, 1);
+		btrfs_throttle(root);
 
 		pos += copied;
 		num_written += copied;
+	}
 
-		cond_resched();
+	kfree(pages);
+
+	return num_written ? num_written : ret;
+}
+
+static ssize_t __btrfs_direct_write(struct kiocb *iocb,
+				    const struct iovec *iov,
+				    unsigned long nr_segs, loff_t pos,
+				    loff_t *ppos, size_t count, size_t ocount)
+{
+	struct file *file = iocb->ki_filp;
+	struct inode *inode = fdentry(file)->d_inode;
+	struct iov_iter i;
+	ssize_t written;
+	ssize_t written_buffered;
+	loff_t endbyte;
+	int err;
+
+	written = generic_file_direct_write(iocb, iov, &nr_segs, pos, ppos,
+					    count, ocount);
+
+	/*
+	 * the generic O_DIRECT will update in-memory i_size after the
+	 * DIOs are done.  But our endio handlers that update the on
+	 * disk i_size never update past the in memory i_size.  So we
+	 * need one more update here to catch any additions to the
+	 * file
+	 */
+	if (inode->i_size != BTRFS_I(inode)->disk_i_size) {
+		btrfs_ordered_update_i_size(inode, inode->i_size, NULL);
+		mark_inode_dirty(inode);
 	}
+
+	if (written < 0 || written == count)
+		return written;
+
+	pos += written;
+	count -= written;
+	iov_iter_init(&i, iov, nr_segs, count, written);
+	written_buffered = __btrfs_buffered_write(file, &i, pos);
+	if (written_buffered < 0) {
+		err = written_buffered;
+		goto out;
+	}
+	endbyte = pos + written_buffered - 1;
+	err = filemap_write_and_wait_range(file->f_mapping, pos, endbyte);
+	if (err)
+		goto out;
+	written += written_buffered;
+	*ppos = pos + written_buffered;
+	invalidate_mapping_pages(file->f_mapping, pos >> PAGE_CACHE_SHIFT,
+				 endbyte >> PAGE_CACHE_SHIFT);
 out:
-	mutex_unlock(&inode->i_mutex);
-	if (ret)
-		err = ret;
+	return written ? written : err;
+}
 
-	kfree(pages);
-	*ppos = pos;
+static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
+				    const struct iovec *iov,
+				    unsigned long nr_segs, loff_t pos)
+{
+	struct file *file = iocb->ki_filp;
+	struct inode *inode = fdentry(file)->d_inode;
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	loff_t *ppos = &iocb->ki_pos;
+	ssize_t num_written = 0;
+	ssize_t err = 0;
+	size_t count, ocount;
+
+	vfs_check_frozen(inode->i_sb, SB_FREEZE_WRITE);
+
+	mutex_lock(&inode->i_mutex);
+
+	err = generic_segment_checks(iov, &nr_segs, &ocount, VERIFY_READ);
+	if (err) {
+		mutex_unlock(&inode->i_mutex);
+		goto out;
+	}
+	count = ocount;
+
+	current->backing_dev_info = inode->i_mapping->backing_dev_info;
+	err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));
+	if (err) {
+		mutex_unlock(&inode->i_mutex);
+		goto out;
+	}
+
+	if (count == 0) {
+		mutex_unlock(&inode->i_mutex);
+		goto out;
+	}
+
+	err = file_remove_suid(file);
+	if (err) {
+		mutex_unlock(&inode->i_mutex);
+		goto out;
+	}
+
+	/*
+	 * If BTRFS flips readonly due to some impossible error
+	 * (fs_info->fs_state now has BTRFS_SUPER_FLAG_ERROR),
+	 * although we have opened a file as writable, we have
+	 * to stop this write operation to ensure FS consistency.
+	 */
+	if (root->fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR) {
+		mutex_unlock(&inode->i_mutex);
+		err = -EROFS;
+		goto out;
+	}
+
+	file_update_time(file);
+	BTRFS_I(inode)->sequence++;
+
+	if (unlikely(file->f_flags & O_DIRECT)) {
+		num_written = __btrfs_direct_write(iocb, iov, nr_segs,
+						   pos, ppos, count, ocount);
+	} else {
+		struct iov_iter i;
+
+		iov_iter_init(&i, iov, nr_segs, count, num_written);
+
+		num_written = __btrfs_buffered_write(file, &i, pos);
+		if (num_written > 0)
+			*ppos = pos + num_written;
+	}
+
+	mutex_unlock(&inode->i_mutex);
 
 	/*
 	 * we want to make sure fsync finds this change
@@ -1118,43 +1157,12 @@ out:
 	 * one running right now.
 	 */
 	BTRFS_I(inode)->last_trans = root->fs_info->generation + 1;
-
-	if (num_written > 0 && will_write) {
-		struct btrfs_trans_handle *trans;
-
-		err = btrfs_wait_ordered_range(inode, start_pos, num_written);
-		if (err)
+	if (num_written > 0 || num_written == -EIOCBQUEUED) {
+		err = generic_write_sync(file, pos, num_written);
+		if (err < 0 && num_written > 0)
 			num_written = err;
-
-		if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) {
-			trans = btrfs_start_transaction(root, 0);
-			if (IS_ERR(trans)) {
-				num_written = PTR_ERR(trans);
-				goto done;
-			}
-			mutex_lock(&inode->i_mutex);
-			ret = btrfs_log_dentry_safe(trans, root,
-						    file->f_dentry);
-			mutex_unlock(&inode->i_mutex);
-			if (ret == 0) {
-				ret = btrfs_sync_log(trans, root);
-				if (ret == 0)
-					btrfs_end_transaction(trans, root);
-				else
-					btrfs_commit_transaction(trans, root);
-			} else if (ret != BTRFS_NO_LOG_SYNC) {
-				btrfs_commit_transaction(trans, root);
-			} else {
-				btrfs_end_transaction(trans, root);
-			}
-		}
-		if (file->f_flags & O_DIRECT && buffered) {
-			invalidate_mapping_pages(inode->i_mapping,
-			      start_pos >> PAGE_CACHE_SHIFT,
-			     (start_pos + num_written - 1) >> PAGE_CACHE_SHIFT);
-		}
 	}
-done:
+out:
 	current->backing_dev_info = NULL;
 	return num_written ? num_written : err;
 }
@@ -1197,6 +1205,7 @@ int btrfs_sync_file(struct file *file, int datasync)
 	int ret = 0;
 	struct btrfs_trans_handle *trans;
 
+	trace_btrfs_sync_file(file, datasync);
 
 	/* we wait first, since the writeback may change the inode */
 	root->log_batch++;
@@ -1324,7 +1333,8 @@ static long btrfs_fallocate(struct file *file, int mode,
 		goto out;
 
 	if (alloc_start > inode->i_size) {
-		ret = btrfs_cont_expand(inode, alloc_start);
+		ret = btrfs_cont_expand(inode, i_size_read(inode),
+					alloc_start);
 		if (ret)
 			goto out;
 	}
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index a039065..0037427 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -393,7 +393,8 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info,
 				break;
 
 			need_loop = 1;
-			e = kzalloc(sizeof(struct btrfs_free_space), GFP_NOFS);
+			e = kmem_cache_zalloc(btrfs_free_space_cachep,
+					      GFP_NOFS);
 			if (!e) {
 				kunmap(page);
 				unlock_page(page);
@@ -405,7 +406,7 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info,
 			e->bytes = le64_to_cpu(entry->bytes);
 			if (!e->bytes) {
 				kunmap(page);
-				kfree(e);
+				kmem_cache_free(btrfs_free_space_cachep, e);
 				unlock_page(page);
 				page_cache_release(page);
 				goto free_cache;
@@ -420,7 +421,8 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info,
 				e->bitmap = kzalloc(PAGE_CACHE_SIZE, GFP_NOFS);
 				if (!e->bitmap) {
 					kunmap(page);
-					kfree(e);
+					kmem_cache_free(
+						btrfs_free_space_cachep, e);
 					unlock_page(page);
 					page_cache_release(page);
 					goto free_cache;
@@ -1187,7 +1189,7 @@ static void free_bitmap(struct btrfs_block_group_cache *block_group,
 {
 	unlink_free_space(block_group, bitmap_info);
 	kfree(bitmap_info->bitmap);
-	kfree(bitmap_info);
+	kmem_cache_free(btrfs_free_space_cachep, bitmap_info);
 	block_group->total_bitmaps--;
 	recalculate_thresholds(block_group);
 }
@@ -1285,9 +1287,22 @@ static int insert_into_bitmap(struct btrfs_block_group_cache *block_group,
 	 * If we are below the extents threshold then we can add this as an
 	 * extent, and don't have to deal with the bitmap
 	 */
-	if (block_group->free_extents < block_group->extents_thresh &&
-	    info->bytes > block_group->sectorsize * 4)
-		return 0;
+	if (block_group->free_extents < block_group->extents_thresh) {
+		/*
+		 * If this block group has some small extents we don't want to
+		 * use up all of our free slots in the cache with them, we want
+		 * to reserve them to larger extents, however if we have plent
+		 * of cache left then go ahead an dadd them, no sense in adding
+		 * the overhead of a bitmap if we don't have to.
+		 */
+		if (info->bytes <= block_group->sectorsize * 4) {
+			if (block_group->free_extents * 2 <=
+			    block_group->extents_thresh)
+				return 0;
+		} else {
+			return 0;
+		}
+	}
 
 	/*
 	 * some block groups are so tiny they can't be enveloped by a bitmap, so
@@ -1342,8 +1357,8 @@ new_bitmap:
 
 		/* no pre-allocated info, allocate a new one */
 		if (!info) {
-			info = kzalloc(sizeof(struct btrfs_free_space),
-				       GFP_NOFS);
+			info = kmem_cache_zalloc(btrfs_free_space_cachep,
+						 GFP_NOFS);
 			if (!info) {
 				spin_lock(&block_group->tree_lock);
 				ret = -ENOMEM;
@@ -1365,7 +1380,7 @@ out:
 	if (info) {
 		if (info->bitmap)
 			kfree(info->bitmap);
-		kfree(info);
+		kmem_cache_free(btrfs_free_space_cachep, info);
 	}
 
 	return ret;
@@ -1398,7 +1413,7 @@ bool try_merge_free_space(struct btrfs_block_group_cache *block_group,
 		else
 			__unlink_free_space(block_group, right_info);
 		info->bytes += right_info->bytes;
-		kfree(right_info);
+		kmem_cache_free(btrfs_free_space_cachep, right_info);
 		merged = true;
 	}
 
@@ -1410,7 +1425,7 @@ bool try_merge_free_space(struct btrfs_block_group_cache *block_group,
 			__unlink_free_space(block_group, left_info);
 		info->offset = left_info->offset;
 		info->bytes += left_info->bytes;
-		kfree(left_info);
+		kmem_cache_free(btrfs_free_space_cachep, left_info);
 		merged = true;
 	}
 
@@ -1423,7 +1438,7 @@ int btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
 	struct btrfs_free_space *info;
 	int ret = 0;
 
-	info = kzalloc(sizeof(struct btrfs_free_space), GFP_NOFS);
+	info = kmem_cache_zalloc(btrfs_free_space_cachep, GFP_NOFS);
 	if (!info)
 		return -ENOMEM;
 
@@ -1450,7 +1465,7 @@ int btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
 link:
 	ret = link_free_space(block_group, info);
 	if (ret)
-		kfree(info);
+		kmem_cache_free(btrfs_free_space_cachep, info);
 out:
 	spin_unlock(&block_group->tree_lock);
 
@@ -1520,7 +1535,7 @@ again:
 			kfree(info->bitmap);
 			block_group->total_bitmaps--;
 		}
-		kfree(info);
+		kmem_cache_free(btrfs_free_space_cachep, info);
 		goto out_lock;
 	}
 
@@ -1556,7 +1571,7 @@ again:
 			/* the hole we're creating ends at the end
 			 * of the info struct, just free the info
 			 */
-			kfree(info);
+			kmem_cache_free(btrfs_free_space_cachep, info);
 		}
 		spin_unlock(&block_group->tree_lock);
 
@@ -1629,30 +1644,28 @@ __btrfs_return_cluster_to_free_space(
 {
 	struct btrfs_free_space *entry;
 	struct rb_node *node;
-	bool bitmap;
 
 	spin_lock(&cluster->lock);
 	if (cluster->block_group != block_group)
 		goto out;
 
-	bitmap = cluster->points_to_bitmap;
 	cluster->block_group = NULL;
 	cluster->window_start = 0;
 	list_del_init(&cluster->block_group_list);
-	cluster->points_to_bitmap = false;
-
-	if (bitmap)
-		goto out;
 
 	node = rb_first(&cluster->root);
 	while (node) {
+		bool bitmap;
+
 		entry = rb_entry(node, struct btrfs_free_space, offset_index);
 		node = rb_next(&entry->offset_index);
 		rb_erase(&entry->offset_index, &cluster->root);
-		BUG_ON(entry->bitmap);
-		try_merge_free_space(block_group, entry, false);
+
+		bitmap = (entry->bitmap != NULL);
+		if (!bitmap)
+			try_merge_free_space(block_group, entry, false);
 		tree_insert_offset(&block_group->free_space_offset,
-				   entry->offset, &entry->offset_index, 0);
+				   entry->offset, &entry->offset_index, bitmap);
 	}
 	cluster->root = RB_ROOT;
 
@@ -1689,7 +1702,7 @@ void btrfs_remove_free_space_cache(struct btrfs_block_group_cache *block_group)
 		unlink_free_space(block_group, info);
 		if (info->bitmap)
 			kfree(info->bitmap);
-		kfree(info);
+		kmem_cache_free(btrfs_free_space_cachep, info);
 		if (need_resched()) {
 			spin_unlock(&block_group->tree_lock);
 			cond_resched();
@@ -1722,7 +1735,7 @@ u64 btrfs_find_space_for_alloc(struct btrfs_block_group_cache *block_group,
 		entry->offset += bytes;
 		entry->bytes -= bytes;
 		if (!entry->bytes)
-			kfree(entry);
+			kmem_cache_free(btrfs_free_space_cachep, entry);
 		else
 			link_free_space(block_group, entry);
 	}
@@ -1775,50 +1788,24 @@ int btrfs_return_cluster_to_free_space(
 
 static u64 btrfs_alloc_from_bitmap(struct btrfs_block_group_cache *block_group,
 				   struct btrfs_free_cluster *cluster,
+				   struct btrfs_free_space *entry,
 				   u64 bytes, u64 min_start)
 {
-	struct btrfs_free_space *entry;
 	int err;
 	u64 search_start = cluster->window_start;
 	u64 search_bytes = bytes;
 	u64 ret = 0;
 
-	spin_lock(&block_group->tree_lock);
-	spin_lock(&cluster->lock);
-
-	if (!cluster->points_to_bitmap)
-		goto out;
-
-	if (cluster->block_group != block_group)
-		goto out;
-
-	/*
-	 * search_start is the beginning of the bitmap, but at some point it may
-	 * be a good idea to point to the actual start of the free area in the
-	 * bitmap, so do the offset_to_bitmap trick anyway, and set bitmap_only
-	 * to 1 to make sure we get the bitmap entry
-	 */
-	entry = tree_search_offset(block_group,
-				   offset_to_bitmap(block_group, search_start),
-				   1, 0);
-	if (!entry || !entry->bitmap)
-		goto out;
-
 	search_start = min_start;
 	search_bytes = bytes;
 
 	err = search_bitmap(block_group, entry, &search_start,
 			    &search_bytes);
 	if (err)
-		goto out;
+		return 0;
 
 	ret = search_start;
 	bitmap_clear_bits(block_group, entry, ret, bytes);
-	if (entry->bytes == 0)
-		free_bitmap(block_group, entry);
-out:
-	spin_unlock(&cluster->lock);
-	spin_unlock(&block_group->tree_lock);
 
 	return ret;
 }
@@ -1836,10 +1823,6 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
 	struct rb_node *node;
 	u64 ret = 0;
 
-	if (cluster->points_to_bitmap)
-		return btrfs_alloc_from_bitmap(block_group, cluster, bytes,
-					       min_start);
-
 	spin_lock(&cluster->lock);
 	if (bytes > cluster->max_size)
 		goto out;
@@ -1852,9 +1835,9 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
 		goto out;
 
 	entry = rb_entry(node, struct btrfs_free_space, offset_index);
-
 	while(1) {
-		if (entry->bytes < bytes || entry->offset < min_start) {
+		if (entry->bytes < bytes ||
+		    (!entry->bitmap && entry->offset < min_start)) {
 			struct rb_node *node;
 
 			node = rb_next(&entry->offset_index);
@@ -1864,10 +1847,27 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
 					 offset_index);
 			continue;
 		}
-		ret = entry->offset;
 
-		entry->offset += bytes;
-		entry->bytes -= bytes;
+		if (entry->bitmap) {
+			ret = btrfs_alloc_from_bitmap(block_group,
+						      cluster, entry, bytes,
+						      min_start);
+			if (ret == 0) {
+				struct rb_node *node;
+				node = rb_next(&entry->offset_index);
+				if (!node)
+					break;
+				entry = rb_entry(node, struct btrfs_free_space,
+						 offset_index);
+				continue;
+			}
+		} else {
+
+			ret = entry->offset;
+
+			entry->offset += bytes;
+			entry->bytes -= bytes;
+		}
 
 		if (entry->bytes == 0)
 			rb_erase(&entry->offset_index, &cluster->root);
@@ -1884,7 +1884,12 @@ out:
 	block_group->free_space -= bytes;
 	if (entry->bytes == 0) {
 		block_group->free_extents--;
-		kfree(entry);
+		if (entry->bitmap) {
+			kfree(entry->bitmap);
+			block_group->total_bitmaps--;
+			recalculate_thresholds(block_group);
+		}
+		kmem_cache_free(btrfs_free_space_cachep, entry);
 	}
 
 	spin_unlock(&block_group->tree_lock);
@@ -1904,12 +1909,13 @@ static int btrfs_bitmap_cluster(struct btrfs_block_group_cache *block_group,
 	unsigned long found_bits;
 	unsigned long start = 0;
 	unsigned long total_found = 0;
+	int ret;
 	bool found = false;
 
 	i = offset_to_bit(entry->offset, block_group->sectorsize,
 			  max_t(u64, offset, entry->offset));
-	search_bits = bytes_to_bits(min_bytes, block_group->sectorsize);
-	total_bits = bytes_to_bits(bytes, block_group->sectorsize);
+	search_bits = bytes_to_bits(bytes, block_group->sectorsize);
+	total_bits = bytes_to_bits(min_bytes, block_group->sectorsize);
 
 again:
 	found_bits = 0;
@@ -1926,7 +1932,7 @@ again:
 	}
 
 	if (!found_bits)
-		return -1;
+		return -ENOSPC;
 
 	if (!found) {
 		start = i;
@@ -1950,189 +1956,208 @@ again:
 
 	cluster->window_start = start * block_group->sectorsize +
 		entry->offset;
-	cluster->points_to_bitmap = true;
+	rb_erase(&entry->offset_index, &block_group->free_space_offset);
+	ret = tree_insert_offset(&cluster->root, entry->offset,
+				 &entry->offset_index, 1);
+	BUG_ON(ret);
 
 	return 0;
 }
 
 /*
- * here we try to find a cluster of blocks in a block group.  The goal
- * is to find at least bytes free and up to empty_size + bytes free.
- * We might not find them all in one contiguous area.
- *
- * returns zero and sets up cluster if things worked out, otherwise
- * it returns -enospc
+ * This searches the block group for just extents to fill the cluster with.
  */
-int btrfs_find_space_cluster(struct btrfs_trans_handle *trans,
-			     struct btrfs_root *root,
-			     struct btrfs_block_group_cache *block_group,
-			     struct btrfs_free_cluster *cluster,
-			     u64 offset, u64 bytes, u64 empty_size)
+static int setup_cluster_no_bitmap(struct btrfs_block_group_cache *block_group,
+				   struct btrfs_free_cluster *cluster,
+				   u64 offset, u64 bytes, u64 min_bytes)
 {
+	struct btrfs_free_space *first = NULL;
 	struct btrfs_free_space *entry = NULL;
+	struct btrfs_free_space *prev = NULL;
+	struct btrfs_free_space *last;
 	struct rb_node *node;
-	struct btrfs_free_space *next;
-	struct btrfs_free_space *last = NULL;
-	u64 min_bytes;
 	u64 window_start;
 	u64 window_free;
-	u64 max_extent = 0;
-	bool found_bitmap = false;
-	int ret;
+	u64 max_extent;
+	u64 max_gap = 128 * 1024;
 
-	/* for metadata, allow allocates with more holes */
-	if (btrfs_test_opt(root, SSD_SPREAD)) {
-		min_bytes = bytes + empty_size;
-	} else if (block_group->flags & BTRFS_BLOCK_GROUP_METADATA) {
-		/*
-		 * we want to do larger allocations when we are
-		 * flushing out the delayed refs, it helps prevent
-		 * making more work as we go along.
-		 */
-		if (trans->transaction->delayed_refs.flushing)
-			min_bytes = max(bytes, (bytes + empty_size) >> 1);
-		else
-			min_bytes = max(bytes, (bytes + empty_size) >> 4);
-	} else
-		min_bytes = max(bytes, (bytes + empty_size) >> 2);
-
-	spin_lock(&block_group->tree_lock);
-	spin_lock(&cluster->lock);
-
-	/* someone already found a cluster, hooray */
-	if (cluster->block_group) {
-		ret = 0;
-		goto out;
-	}
-again:
-	entry = tree_search_offset(block_group, offset, found_bitmap, 1);
-	if (!entry) {
-		ret = -ENOSPC;
-		goto out;
-	}
+	entry = tree_search_offset(block_group, offset, 0, 1);
+	if (!entry)
+		return -ENOSPC;
 
 	/*
-	 * If found_bitmap is true, we exhausted our search for extent entries,
-	 * and we just want to search all of the bitmaps that we can find, and
-	 * ignore any extent entries we find.
+	 * We don't want bitmaps, so just move along until we find a normal
+	 * extent entry.
 	 */
-	while (entry->bitmap || found_bitmap ||
-	       (!entry->bitmap && entry->bytes < min_bytes)) {
-		struct rb_node *node = rb_next(&entry->offset_index);
-
-		if (entry->bitmap && entry->bytes > bytes + empty_size) {
-			ret = btrfs_bitmap_cluster(block_group, entry, cluster,
-						   offset, bytes + empty_size,
-						   min_bytes);
-			if (!ret)
-				goto got_it;
-		}
-
-		if (!node) {
-			ret = -ENOSPC;
-			goto out;
-		}
+	while (entry->bitmap) {
+		node = rb_next(&entry->offset_index);
+		if (!node)
+			return -ENOSPC;
 		entry = rb_entry(node, struct btrfs_free_space, offset_index);
 	}
 
-	/*
-	 * We already searched all the extent entries from the passed in offset
-	 * to the end and didn't find enough space for the cluster, and we also
-	 * didn't find any bitmaps that met our criteria, just go ahead and exit
-	 */
-	if (found_bitmap) {
-		ret = -ENOSPC;
-		goto out;
-	}
-
-	cluster->points_to_bitmap = false;
 	window_start = entry->offset;
 	window_free = entry->bytes;
-	last = entry;
 	max_extent = entry->bytes;
+	first = entry;
+	last = entry;
+	prev = entry;
 
-	while (1) {
-		/* out window is just right, lets fill it */
-		if (window_free >= bytes + empty_size)
-			break;
-
-		node = rb_next(&last->offset_index);
-		if (!node) {
-			if (found_bitmap)
-				goto again;
-			ret = -ENOSPC;
-			goto out;
-		}
-		next = rb_entry(node, struct btrfs_free_space, offset_index);
+	while (window_free <= min_bytes) {
+		node = rb_next(&entry->offset_index);
+		if (!node)
+			return -ENOSPC;
+		entry = rb_entry(node, struct btrfs_free_space, offset_index);
 
-		/*
-		 * we found a bitmap, so if this search doesn't result in a
-		 * cluster, we know to go and search again for the bitmaps and
-		 * start looking for space there
-		 */
-		if (next->bitmap) {
-			if (!found_bitmap)
-				offset = next->offset;
-			found_bitmap = true;
-			last = next;
+		if (entry->bitmap)
 			continue;
-		}
-
 		/*
 		 * we haven't filled the empty size and the window is
 		 * very large.  reset and try again
 		 */
-		if (next->offset - (last->offset + last->bytes) > 128 * 1024 ||
-		    next->offset - window_start > (bytes + empty_size) * 2) {
-			entry = next;
+		if (entry->offset - (prev->offset + prev->bytes) > max_gap ||
+		    entry->offset - window_start > (min_bytes * 2)) {
+			first = entry;
 			window_start = entry->offset;
 			window_free = entry->bytes;
 			last = entry;
 			max_extent = entry->bytes;
 		} else {
-			last = next;
-			window_free += next->bytes;
+			last = entry;
+			window_free += entry->bytes;
 			if (entry->bytes > max_extent)
 				max_extent = entry->bytes;
 		}
+		prev = entry;
 	}
 
-	cluster->window_start = entry->offset;
+	cluster->window_start = first->offset;
+
+	node = &first->offset_index;
 
 	/*
 	 * now we've found our entries, pull them out of the free space
 	 * cache and put them into the cluster rbtree
-	 *
-	 * The cluster includes an rbtree, but only uses the offset index
-	 * of each free space cache entry.
 	 */
-	while (1) {
+	do {
+		int ret;
+
+		entry = rb_entry(node, struct btrfs_free_space, offset_index);
 		node = rb_next(&entry->offset_index);
-		if (entry->bitmap && node) {
-			entry = rb_entry(node, struct btrfs_free_space,
-					 offset_index);
+		if (entry->bitmap)
 			continue;
-		} else if (entry->bitmap && !node) {
-			break;
-		}
 
 		rb_erase(&entry->offset_index, &block_group->free_space_offset);
 		ret = tree_insert_offset(&cluster->root, entry->offset,
 					 &entry->offset_index, 0);
 		BUG_ON(ret);
+	} while (node && entry != last);
 
-		if (!node || entry == last)
-			break;
+	cluster->max_size = max_extent;
+
+	return 0;
+}
+
+/*
+ * This specifically looks for bitmaps that may work in the cluster, we assume
+ * that we have already failed to find extents that will work.
+ */
+static int setup_cluster_bitmap(struct btrfs_block_group_cache *block_group,
+				struct btrfs_free_cluster *cluster,
+				u64 offset, u64 bytes, u64 min_bytes)
+{
+	struct btrfs_free_space *entry;
+	struct rb_node *node;
+	int ret = -ENOSPC;
+
+	if (block_group->total_bitmaps == 0)
+		return -ENOSPC;
 
+	entry = tree_search_offset(block_group,
+				   offset_to_bitmap(block_group, offset),
+				   0, 1);
+	if (!entry)
+		return -ENOSPC;
+
+	node = &entry->offset_index;
+	do {
 		entry = rb_entry(node, struct btrfs_free_space, offset_index);
+		node = rb_next(&entry->offset_index);
+		if (!entry->bitmap)
+			continue;
+		if (entry->bytes < min_bytes)
+			continue;
+		ret = btrfs_bitmap_cluster(block_group, entry, cluster, offset,
+					   bytes, min_bytes);
+	} while (ret && node);
+
+	return ret;
+}
+
+/*
+ * here we try to find a cluster of blocks in a block group.  The goal
+ * is to find at least bytes free and up to empty_size + bytes free.
+ * We might not find them all in one contiguous area.
+ *
+ * returns zero and sets up cluster if things worked out, otherwise
+ * it returns -enospc
+ */
+int btrfs_find_space_cluster(struct btrfs_trans_handle *trans,
+			     struct btrfs_root *root,
+			     struct btrfs_block_group_cache *block_group,
+			     struct btrfs_free_cluster *cluster,
+			     u64 offset, u64 bytes, u64 empty_size)
+{
+	u64 min_bytes;
+	int ret;
+
+	/* for metadata, allow allocates with more holes */
+	if (btrfs_test_opt(root, SSD_SPREAD)) {
+		min_bytes = bytes + empty_size;
+	} else if (block_group->flags & BTRFS_BLOCK_GROUP_METADATA) {
+		/*
+		 * we want to do larger allocations when we are
+		 * flushing out the delayed refs, it helps prevent
+		 * making more work as we go along.
+		 */
+		if (trans->transaction->delayed_refs.flushing)
+			min_bytes = max(bytes, (bytes + empty_size) >> 1);
+		else
+			min_bytes = max(bytes, (bytes + empty_size) >> 4);
+	} else
+		min_bytes = max(bytes, (bytes + empty_size) >> 2);
+
+	spin_lock(&block_group->tree_lock);
+
+	/*
+	 * If we know we don't have enough space to make a cluster don't even
+	 * bother doing all the work to try and find one.
+	 */
+	if (block_group->free_space < min_bytes) {
+		spin_unlock(&block_group->tree_lock);
+		return -ENOSPC;
 	}
 
-	cluster->max_size = max_extent;
-got_it:
-	ret = 0;
-	atomic_inc(&block_group->count);
-	list_add_tail(&cluster->block_group_list, &block_group->cluster_list);
-	cluster->block_group = block_group;
+	spin_lock(&cluster->lock);
+
+	/* someone already found a cluster, hooray */
+	if (cluster->block_group) {
+		ret = 0;
+		goto out;
+	}
+
+	ret = setup_cluster_no_bitmap(block_group, cluster, offset, bytes,
+				      min_bytes);
+	if (ret)
+		ret = setup_cluster_bitmap(block_group, cluster, offset,
+					   bytes, min_bytes);
+
+	if (!ret) {
+		atomic_inc(&block_group->count);
+		list_add_tail(&cluster->block_group_list,
+			      &block_group->cluster_list);
+		cluster->block_group = block_group;
+	}
 out:
 	spin_unlock(&cluster->lock);
 	spin_unlock(&block_group->tree_lock);
@@ -2149,8 +2174,99 @@ void btrfs_init_free_cluster(struct btrfs_free_cluster *cluster)
 	spin_lock_init(&cluster->refill_lock);
 	cluster->root = RB_ROOT;
 	cluster->max_size = 0;
-	cluster->points_to_bitmap = false;
 	INIT_LIST_HEAD(&cluster->block_group_list);
 	cluster->block_group = NULL;
 }
 
+int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group,
+			   u64 *trimmed, u64 start, u64 end, u64 minlen)
+{
+	struct btrfs_free_space *entry = NULL;
+	struct btrfs_fs_info *fs_info = block_group->fs_info;
+	u64 bytes = 0;
+	u64 actually_trimmed;
+	int ret = 0;
+
+	*trimmed = 0;
+
+	while (start < end) {
+		spin_lock(&block_group->tree_lock);
+
+		if (block_group->free_space < minlen) {
+			spin_unlock(&block_group->tree_lock);
+			break;
+		}
+
+		entry = tree_search_offset(block_group, start, 0, 1);
+		if (!entry)
+			entry = tree_search_offset(block_group,
+						   offset_to_bitmap(block_group,
+								    start),
+						   1, 1);
+
+		if (!entry || entry->offset >= end) {
+			spin_unlock(&block_group->tree_lock);
+			break;
+		}
+
+		if (entry->bitmap) {
+			ret = search_bitmap(block_group, entry, &start, &bytes);
+			if (!ret) {
+				if (start >= end) {
+					spin_unlock(&block_group->tree_lock);
+					break;
+				}
+				bytes = min(bytes, end - start);
+				bitmap_clear_bits(block_group, entry,
+						  start, bytes);
+				if (entry->bytes == 0)
+					free_bitmap(block_group, entry);
+			} else {
+				start = entry->offset + BITS_PER_BITMAP *
+					block_group->sectorsize;
+				spin_unlock(&block_group->tree_lock);
+				ret = 0;
+				continue;
+			}
+		} else {
+			start = entry->offset;
+			bytes = min(entry->bytes, end - start);
+			unlink_free_space(block_group, entry);
+			kfree(entry);
+		}
+
+		spin_unlock(&block_group->tree_lock);
+
+		if (bytes >= minlen) {
+			int update_ret;
+			update_ret = btrfs_update_reserved_bytes(block_group,
+								 bytes, 1, 1);
+
+			ret = btrfs_error_discard_extent(fs_info->extent_root,
+							 start,
+							 bytes,
+							 &actually_trimmed);
+
+			btrfs_add_free_space(block_group,
+					     start, bytes);
+			if (!update_ret)
+				btrfs_update_reserved_bytes(block_group,
+							    bytes, 0, 1);
+
+			if (ret)
+				break;
+			*trimmed += actually_trimmed;
+		}
+		start += bytes;
+		bytes = 0;
+
+		if (fatal_signal_pending(current)) {
+			ret = -ERESTARTSYS;
+			break;
+		}
+
+		cond_resched();
+	}
+
+	return ret;
+}
diff --git a/fs/btrfs/free-space-cache.h b/fs/btrfs/free-space-cache.h
index e49ca5c..65c3b93 100644
--- a/fs/btrfs/free-space-cache.h
+++ b/fs/btrfs/free-space-cache.h
@@ -68,4 +68,6 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
 int btrfs_return_cluster_to_free_space(
 			       struct btrfs_block_group_cache *block_group,
 			       struct btrfs_free_cluster *cluster);
+int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group,
+			   u64 *trimmed, u64 start, u64 end, u64 minlen);
 #endif
diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c
index c56eb59..c05a08f 100644
--- a/fs/btrfs/inode-map.c
+++ b/fs/btrfs/inode-map.c
@@ -30,7 +30,8 @@ int btrfs_find_highest_inode(struct btrfs_root *root, u64 *objectid)
 	int slot;
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path)
+		return -ENOMEM;
 
 	search_key.objectid = BTRFS_LAST_FREE_OBJECTID;
 	search_key.type = -1;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 512c3d1..93c28a1 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -50,6 +50,7 @@
 #include "tree-log.h"
 #include "compression.h"
 #include "locking.h"
+#include "free-space-cache.h"
 
 struct btrfs_iget_args {
 	u64 ino;
@@ -70,6 +71,7 @@ static struct kmem_cache *btrfs_inode_cachep;
 struct kmem_cache *btrfs_trans_handle_cachep;
 struct kmem_cache *btrfs_transaction_cachep;
 struct kmem_cache *btrfs_path_cachep;
+struct kmem_cache *btrfs_free_space_cachep;
 
 #define S_SHIFT 12
 static unsigned char btrfs_type_by_mode[S_IFMT >> S_SHIFT] = {
@@ -82,7 +84,8 @@ static unsigned char btrfs_type_by_mode[S_IFMT >> S_SHIFT] = {
 	[S_IFLNK >> S_SHIFT]	= BTRFS_FT_SYMLINK,
 };
 
-static void btrfs_truncate(struct inode *inode);
+static int btrfs_setsize(struct inode *inode, loff_t newsize);
+static int btrfs_truncate(struct inode *inode);
 static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end);
 static noinline int cow_file_range(struct inode *inode,
 				   struct page *locked_page,
@@ -288,6 +291,7 @@ static noinline int add_async_extent(struct async_cow *cow,
 	struct async_extent *async_extent;
 
 	async_extent = kmalloc(sizeof(*async_extent), GFP_NOFS);
+	BUG_ON(!async_extent);
 	async_extent->start = start;
 	async_extent->ram_size = ram_size;
 	async_extent->compressed_size = compressed_size;
@@ -382,9 +386,11 @@ again:
 	 */
 	if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NOCOMPRESS) &&
 	    (btrfs_test_opt(root, COMPRESS) ||
-	     (BTRFS_I(inode)->force_compress))) {
+	     (BTRFS_I(inode)->force_compress) ||
+	     (BTRFS_I(inode)->flags & BTRFS_INODE_COMPRESS))) {
 		WARN_ON(pages);
 		pages = kzalloc(sizeof(struct page *) * nr_pages, GFP_NOFS);
+		BUG_ON(!pages);
 
 		if (BTRFS_I(inode)->force_compress)
 			compress_type = BTRFS_I(inode)->force_compress;
@@ -1254,7 +1260,8 @@ static int run_delalloc_range(struct inode *inode, struct page *locked_page,
 		ret = run_delalloc_nocow(inode, locked_page, start, end,
 					 page_started, 0, nr_written);
 	else if (!btrfs_test_opt(root, COMPRESS) &&
-		 !(BTRFS_I(inode)->force_compress))
+		 !(BTRFS_I(inode)->force_compress) &&
+		 !(BTRFS_I(inode)->flags & BTRFS_INODE_COMPRESS))
 		ret = cow_file_range(inode, locked_page, start, end,
 				      page_started, nr_written, 1);
 	else
@@ -1461,8 +1468,11 @@ static int btrfs_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
 		if (bio_flags & EXTENT_BIO_COMPRESSED) {
 			return btrfs_submit_compressed_read(inode, bio,
 						    mirror_num, bio_flags);
-		} else if (!skip_sum)
-			btrfs_lookup_bio_sums(root, inode, bio, NULL);
+		} else if (!skip_sum) {
+			ret = btrfs_lookup_bio_sums(root, inode, bio, NULL);
+			if (ret)
+				return ret;
+		}
 		goto mapit;
 	} else if (!skip_sum) {
 		/* csum items have already been cloned */
@@ -1785,6 +1795,8 @@ out:
 static int btrfs_writepage_end_io_hook(struct page *page, u64 start, u64 end,
 				struct extent_state *state, int uptodate)
 {
+	trace_btrfs_writepage_end_io_hook(page, start, end, uptodate);
+
 	ClearPagePrivate2(page);
 	return btrfs_finish_ordered_io(page->mapping->host, start, end);
 }
@@ -1895,10 +1907,10 @@ static int btrfs_io_failed_hook(struct bio *failed_bio,
 	else
 		rw = READ;
 
-	BTRFS_I(inode)->io_tree.ops->submit_bio_hook(inode, rw, bio,
+	ret = BTRFS_I(inode)->io_tree.ops->submit_bio_hook(inode, rw, bio,
 						      failrec->last_mirror,
 						      failrec->bio_flags, 0);
-	return 0;
+	return ret;
 }
 
 /*
@@ -2282,7 +2294,7 @@ int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode)
  * this cleans up any orphans that may be left on the list from the last use
  * of this root.
  */
-void btrfs_orphan_cleanup(struct btrfs_root *root)
+int btrfs_orphan_cleanup(struct btrfs_root *root)
 {
 	struct btrfs_path *path;
 	struct extent_buffer *leaf;
@@ -2292,10 +2304,13 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
 	int ret = 0, nr_unlink = 0, nr_truncate = 0;
 
 	if (cmpxchg(&root->orphan_cleanup_state, 0, ORPHAN_CLEANUP_STARTED))
-		return;
+		return 0;
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path) {
+		ret = -ENOMEM;
+		goto out;
+	}
 	path->reada = -1;
 
 	key.objectid = BTRFS_ORPHAN_OBJECTID;
@@ -2304,11 +2319,8 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
 
 	while (1) {
 		ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
-		if (ret < 0) {
-			printk(KERN_ERR "Error searching slot for orphan: %d"
-			       "\n", ret);
-			break;
-		}
+		if (ret < 0)
+			goto out;
 
 		/*
 		 * if ret == 0 means we found what we were searching for, which
@@ -2316,6 +2328,7 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
 		 * find the key and see if we have stuff that matches
 		 */
 		if (ret > 0) {
+			ret = 0;
 			if (path->slots[0] == 0)
 				break;
 			path->slots[0]--;
@@ -2343,7 +2356,10 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
 		found_key.type = BTRFS_INODE_ITEM_KEY;
 		found_key.offset = 0;
 		inode = btrfs_iget(root->fs_info->sb, &found_key, root, NULL);
-		BUG_ON(IS_ERR(inode));
+		if (IS_ERR(inode)) {
+			ret = PTR_ERR(inode);
+			goto out;
+		}
 
 		/*
 		 * add this inode to the orphan list so btrfs_orphan_del does
@@ -2361,7 +2377,10 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
 		 */
 		if (is_bad_inode(inode)) {
 			trans = btrfs_start_transaction(root, 0);
-			BUG_ON(IS_ERR(trans));
+			if (IS_ERR(trans)) {
+				ret = PTR_ERR(trans);
+				goto out;
+			}
 			btrfs_orphan_del(trans, inode);
 			btrfs_end_transaction(trans, root);
 			iput(inode);
@@ -2370,17 +2389,22 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
 
 		/* if we have links, this was a truncate, lets do that */
 		if (inode->i_nlink) {
+			if (!S_ISREG(inode->i_mode)) {
+				WARN_ON(1);
+				iput(inode);
+				continue;
+			}
 			nr_truncate++;
-			btrfs_truncate(inode);
+			ret = btrfs_truncate(inode);
 		} else {
 			nr_unlink++;
 		}
 
 		/* this will do delete_inode and everything for us */
 		iput(inode);
+		if (ret)
+			goto out;
 	}
-	btrfs_free_path(path);
-
 	root->orphan_cleanup_state = ORPHAN_CLEANUP_DONE;
 
 	if (root->orphan_block_rsv)
@@ -2389,14 +2413,20 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
 
 	if (root->orphan_block_rsv || root->orphan_item_inserted) {
 		trans = btrfs_join_transaction(root, 1);
-		BUG_ON(IS_ERR(trans));
-		btrfs_end_transaction(trans, root);
+		if (!IS_ERR(trans))
+			btrfs_end_transaction(trans, root);
 	}
 
 	if (nr_unlink)
 		printk(KERN_INFO "btrfs: unlinked %d orphans\n", nr_unlink);
 	if (nr_truncate)
 		printk(KERN_INFO "btrfs: truncated %d orphans\n", nr_truncate);
+
+out:
+	if (ret)
+		printk(KERN_CRIT "btrfs: could not do orphan cleanup %d\n", ret);
+	btrfs_free_path(path);
+	return ret;
 }
 
 /*
@@ -2507,6 +2537,8 @@ static void btrfs_read_locked_inode(struct inode *inode)
 	BTRFS_I(inode)->flags = btrfs_inode_flags(leaf, inode_item);
 
 	alloc_group_block = btrfs_inode_block_group(leaf, inode_item);
+	if (location.objectid == BTRFS_FREE_SPACE_OBJECTID)
+		inode->i_mapping->flags &= ~__GFP_FS;
 
 	/*
 	 * try to precache a NULL acl entry for files that don't have
@@ -2635,10 +2667,10 @@ failed:
  * recovery code.  It remove a link in a directory with a given name, and
  * also drops the back refs in the inode to the directory
  */
-int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
-		       struct btrfs_root *root,
-		       struct inode *dir, struct inode *inode,
-		       const char *name, int name_len)
+static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans,
+				struct btrfs_root *root,
+				struct inode *dir, struct inode *inode,
+				const char *name, int name_len)
 {
 	struct btrfs_path *path;
 	int ret = 0;
@@ -2710,12 +2742,25 @@ err:
 	btrfs_i_size_write(dir, dir->i_size - name_len * 2);
 	inode->i_ctime = dir->i_mtime = dir->i_ctime = CURRENT_TIME;
 	btrfs_update_inode(trans, root, dir);
-	btrfs_drop_nlink(inode);
-	ret = btrfs_update_inode(trans, root, inode);
 out:
 	return ret;
 }
 
+int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
+		       struct btrfs_root *root,
+		       struct inode *dir, struct inode *inode,
+		       const char *name, int name_len)
+{
+	int ret;
+	ret = __btrfs_unlink_inode(trans, root, dir, inode, name, name_len);
+	if (!ret) {
+		btrfs_drop_nlink(inode);
+		ret = btrfs_update_inode(trans, root, inode);
+	}
+	return ret;
+}
+		
+
 /* helper to check if there is any shared block in the path */
 static int check_path_shared(struct btrfs_root *root,
 			     struct btrfs_path *path)
@@ -3537,7 +3582,13 @@ out:
 	return ret;
 }
 
-int btrfs_cont_expand(struct inode *inode, loff_t size)
+/*
+ * This function puts in dummy file extents for the area we're creating a hole
+ * for.  So if we are truncating this file to a larger size we need to insert
+ * these file extents so that btrfs_get_extent will return a EXTENT_MAP_HOLE for
+ * the range between oldsize and size
+ */
+int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size)
 {
 	struct btrfs_trans_handle *trans;
 	struct btrfs_root *root = BTRFS_I(inode)->root;
@@ -3545,7 +3596,7 @@ int btrfs_cont_expand(struct inode *inode, loff_t size)
 	struct extent_map *em = NULL;
 	struct extent_state *cached_state = NULL;
 	u64 mask = root->sectorsize - 1;
-	u64 hole_start = (inode->i_size + mask) & ~mask;
+	u64 hole_start = (oldsize + mask) & ~mask;
 	u64 block_end = (size + mask) & ~mask;
 	u64 last_byte;
 	u64 cur_offset;
@@ -3590,13 +3641,15 @@ int btrfs_cont_expand(struct inode *inode, loff_t size)
 			err = btrfs_drop_extents(trans, inode, cur_offset,
 						 cur_offset + hole_size,
 						 &hint_byte, 1);
-			BUG_ON(err);
+			if (err)
+				break;
 
 			err = btrfs_insert_file_extent(trans, root,
 					inode->i_ino, cur_offset, 0,
 					0, hole_size, 0, hole_size,
 					0, 0, 0);
-			BUG_ON(err);
+			if (err)
+				break;
 
 			btrfs_drop_extent_cache(inode, hole_start,
 					last_byte - 1, 0);
@@ -3616,81 +3669,41 @@ int btrfs_cont_expand(struct inode *inode, loff_t size)
 	return err;
 }
 
-static int btrfs_setattr_size(struct inode *inode, struct iattr *attr)
+static int btrfs_setsize(struct inode *inode, loff_t newsize)
 {
-	struct btrfs_root *root = BTRFS_I(inode)->root;
-	struct btrfs_trans_handle *trans;
-	unsigned long nr;
+	loff_t oldsize = i_size_read(inode);
 	int ret;
 
-	if (attr->ia_size == inode->i_size)
+	if (newsize == oldsize)
 		return 0;
 
-	if (attr->ia_size > inode->i_size) {
-		unsigned long limit;
-		limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
-		if (attr->ia_size > inode->i_sb->s_maxbytes)
-			return -EFBIG;
-		if (limit != RLIM_INFINITY && attr->ia_size > limit) {
-			send_sig(SIGXFSZ, current, 0);
-			return -EFBIG;
-		}
-	}
-
-	trans = btrfs_start_transaction(root, 5);
-	if (IS_ERR(trans))
-		return PTR_ERR(trans);
-
-	btrfs_set_trans_block_group(trans, inode);
-
-	ret = btrfs_orphan_add(trans, inode);
-	BUG_ON(ret);
-
-	nr = trans->blocks_used;
-	btrfs_end_transaction(trans, root);
-	btrfs_btree_balance_dirty(root, nr);
-
-	if (attr->ia_size > inode->i_size) {
-		ret = btrfs_cont_expand(inode, attr->ia_size);
+	if (newsize > oldsize) {
+		i_size_write(inode, newsize);
+		btrfs_ordered_update_i_size(inode, i_size_read(inode), NULL);
+		truncate_pagecache(inode, oldsize, newsize);
+		ret = btrfs_cont_expand(inode, oldsize, newsize);
 		if (ret) {
-			btrfs_truncate(inode);
+			btrfs_setsize(inode, oldsize);
 			return ret;
 		}
 
-		i_size_write(inode, attr->ia_size);
-		btrfs_ordered_update_i_size(inode, inode->i_size, NULL);
+		mark_inode_dirty(inode);
+	} else {
 
-		trans = btrfs_start_transaction(root, 0);
-		BUG_ON(IS_ERR(trans));
-		btrfs_set_trans_block_group(trans, inode);
-		trans->block_rsv = root->orphan_block_rsv;
-		BUG_ON(!trans->block_rsv);
+		/*
+		 * We're truncating a file that used to have good data down to
+		 * zero. Make sure it gets into the ordered flush list so that
+		 * any new writes get down to disk quickly.
+		 */
+		if (newsize == 0)
+			BTRFS_I(inode)->ordered_data_close = 1;
 
-		ret = btrfs_update_inode(trans, root, inode);
-		BUG_ON(ret);
-		if (inode->i_nlink > 0) {
-			ret = btrfs_orphan_del(trans, inode);
-			BUG_ON(ret);
-		}
-		nr = trans->blocks_used;
-		btrfs_end_transaction(trans, root);
-		btrfs_btree_balance_dirty(root, nr);
-		return 0;
+		/* we don't support swapfiles, so vmtruncate shouldn't fail */
+		truncate_setsize(inode, newsize);
+		ret = btrfs_truncate(inode);
 	}
 
-	/*
-	 * We're truncating a file that used to have good data down to
-	 * zero. Make sure it gets into the ordered flush list so that
-	 * any new writes get down to disk quickly.
-	 */
-	if (attr->ia_size == 0)
-		BTRFS_I(inode)->ordered_data_close = 1;
-
-	/* we don't support swapfiles, so vmtruncate shouldn't fail */
-	ret = vmtruncate(inode, attr->ia_size);
-	BUG_ON(ret);
-
-	return 0;
+	return ret;
 }
 
 static int btrfs_setattr(struct dentry *dentry, struct iattr *attr)
@@ -3707,7 +3720,7 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr)
 		return err;
 
 	if (S_ISREG(inode->i_mode) && (attr->ia_valid & ATTR_SIZE)) {
-		err = btrfs_setattr_size(inode, attr);
+		err = btrfs_setsize(inode, attr->ia_size);
 		if (err)
 			return err;
 	}
@@ -3730,6 +3743,8 @@ void btrfs_evict_inode(struct inode *inode)
 	unsigned long nr;
 	int ret;
 
+	trace_btrfs_inode_evict(inode);
+
 	truncate_inode_pages(&inode->i_data, 0);
 	if (inode->i_nlink && (btrfs_root_refs(&root->root_item) != 0 ||
 			       root == root->fs_info->tree_root))
@@ -4072,7 +4087,6 @@ struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
 		BTRFS_I(inode)->root = root;
 		memcpy(&BTRFS_I(inode)->location, location, sizeof(*location));
 		btrfs_read_locked_inode(inode);
-
 		inode_tree_add(inode);
 		unlock_new_inode(inode);
 		if (new)
@@ -4147,8 +4161,10 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry)
 	if (!IS_ERR(inode) && root != sub_root) {
 		down_read(&root->fs_info->cleanup_work_sem);
 		if (!(inode->i_sb->s_flags & MS_RDONLY))
-			btrfs_orphan_cleanup(sub_root);
+			ret = btrfs_orphan_cleanup(sub_root);
 		up_read(&root->fs_info->cleanup_work_sem);
+		if (ret)
+			inode = ERR_PTR(ret);
 	}
 
 	return inode;
@@ -4282,6 +4298,9 @@ static int btrfs_real_readdir(struct file *filp, void *dirent,
 		while (di_cur < di_total) {
 			struct btrfs_key location;
 
+			if (verify_dir_item(root, leaf, di))
+				break;
+
 			name_len = btrfs_dir_name_len(leaf, di);
 			if (name_len <= sizeof(tmp_name)) {
 				name_ptr = tmp_name;
@@ -4517,6 +4536,8 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
 		return ERR_PTR(-ENOMEM);
 
 	if (dir) {
+		trace_btrfs_inode_request(dir);
+
 		ret = btrfs_set_inode_index(dir, index);
 		if (ret) {
 			iput(inode);
@@ -4585,12 +4606,16 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
 	if ((mode & S_IFREG)) {
 		if (btrfs_test_opt(root, NODATASUM))
 			BTRFS_I(inode)->flags |= BTRFS_INODE_NODATASUM;
-		if (btrfs_test_opt(root, NODATACOW))
+		if (btrfs_test_opt(root, NODATACOW) ||
+		    (BTRFS_I(dir)->flags & BTRFS_INODE_NODATACOW))
 			BTRFS_I(inode)->flags |= BTRFS_INODE_NODATACOW;
 	}
 
 	insert_inode_hash(inode);
 	inode_tree_add(inode);
+
+	trace_btrfs_inode_new(inode);
+
 	return inode;
 fail:
 	if (dir)
@@ -4809,7 +4834,10 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
 
 	/* do not allow sys_link's with other subvols of the same device */
 	if (root->objectid != BTRFS_I(inode)->root->objectid)
-		return -EPERM;
+		return -EXDEV;
+
+	if (inode->i_nlink == ~0U)
+		return -EMLINK;
 
 	btrfs_inc_nlink(inode);
 	inode->i_ctime = CURRENT_TIME;
@@ -5265,6 +5293,9 @@ insert:
 	}
 	write_unlock(&em_tree->lock);
 out:
+
+	trace_btrfs_get_extent(root, em);
+
 	if (path)
 		btrfs_free_path(path);
 	if (trans) {
@@ -5748,6 +5779,10 @@ static void btrfs_endio_direct_read(struct bio *bio, int err)
 
 	kfree(dip->csums);
 	kfree(dip);
+
+	/* If we had a csum failure make sure to clear the uptodate flag */
+	if (err)
+		clear_bit(BIO_UPTODATE, &bio->bi_flags);
 	dio_end_io(bio, err);
 }
 
@@ -5849,6 +5884,10 @@ out_done:
 
 	kfree(dip->csums);
 	kfree(dip);
+
+	/* If we had an error make sure to clear the uptodate flag */
+	if (err)
+		clear_bit(BIO_UPTODATE, &bio->bi_flags);
 	dio_end_io(bio, err);
 }
 
@@ -5922,9 +5961,12 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode,
 				   __btrfs_submit_bio_start_direct_io,
 				   __btrfs_submit_bio_done);
 		goto err;
-	} else if (!skip_sum)
-		btrfs_lookup_bio_sums_dio(root, inode, bio,
+	} else if (!skip_sum) {
+		ret = btrfs_lookup_bio_sums_dio(root, inode, bio,
 					  file_offset, csums);
+		if (ret)
+			goto err;
+	}
 
 	ret = btrfs_map_bio(root, rw, bio, 0, 1);
 err:
@@ -5948,6 +5990,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
 	int nr_pages = 0;
 	u32 *csums = dip->csums;
 	int ret = 0;
+	int write = rw & REQ_WRITE;
 
 	bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev, start_sector, GFP_NOFS);
 	if (!bio)
@@ -5984,7 +6027,8 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
 				goto out_err;
 			}
 
-			if (!skip_sum)
+			/* Write's use the ordered csums */
+			if (!write && !skip_sum)
 				csums = csums + nr_pages;
 			start_sector += submit_len >> 9;
 			file_offset += submit_len;
@@ -6052,7 +6096,8 @@ static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode,
 	}
 	dip->csums = NULL;
 
-	if (!skip_sum) {
+	/* Write's use the ordered csum stuff, so we don't need dip->csums */
+	if (!write && !skip_sum) {
 		dip->csums = kmalloc(sizeof(u32) * bio->bi_vcnt, GFP_NOFS);
 		if (!dip->csums) {
 			kfree(dip);
@@ -6474,28 +6519,42 @@ out:
 	return ret;
 }
 
-static void btrfs_truncate(struct inode *inode)
+static int btrfs_truncate(struct inode *inode)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	int ret;
+	int err = 0;
 	struct btrfs_trans_handle *trans;
 	unsigned long nr;
 	u64 mask = root->sectorsize - 1;
 
-	if (!S_ISREG(inode->i_mode)) {
-		WARN_ON(1);
-		return;
-	}
-
 	ret = btrfs_truncate_page(inode->i_mapping, inode->i_size);
 	if (ret)
-		return;
+		return ret;
 
 	btrfs_wait_ordered_range(inode, inode->i_size & (~mask), (u64)-1);
 	btrfs_ordered_update_i_size(inode, inode->i_size, NULL);
 
+	trans = btrfs_start_transaction(root, 5);
+	if (IS_ERR(trans))
+		return PTR_ERR(trans);
+
+	btrfs_set_trans_block_group(trans, inode);
+
+	ret = btrfs_orphan_add(trans, inode);
+	if (ret) {
+		btrfs_end_transaction(trans, root);
+		return ret;
+	}
+
+	nr = trans->blocks_used;
+	btrfs_end_transaction(trans, root);
+	btrfs_btree_balance_dirty(root, nr);
+
+	/* Now start a transaction for the truncate */
 	trans = btrfs_start_transaction(root, 0);
-	BUG_ON(IS_ERR(trans));
+	if (IS_ERR(trans))
+		return PTR_ERR(trans);
 	btrfs_set_trans_block_group(trans, inode);
 	trans->block_rsv = root->orphan_block_rsv;
 
@@ -6522,29 +6581,38 @@ static void btrfs_truncate(struct inode *inode)
 	while (1) {
 		if (!trans) {
 			trans = btrfs_start_transaction(root, 0);
-			BUG_ON(IS_ERR(trans));
+			if (IS_ERR(trans))
+				return PTR_ERR(trans);
 			btrfs_set_trans_block_group(trans, inode);
 			trans->block_rsv = root->orphan_block_rsv;
 		}
 
 		ret = btrfs_block_rsv_check(trans, root,
 					    root->orphan_block_rsv, 0, 5);
-		if (ret) {
-			BUG_ON(ret != -EAGAIN);
+		if (ret == -EAGAIN) {
 			ret = btrfs_commit_transaction(trans, root);
-			BUG_ON(ret);
+			if (ret)
+				return ret;
 			trans = NULL;
 			continue;
+		} else if (ret) {
+			err = ret;
+			break;
 		}
 
 		ret = btrfs_truncate_inode_items(trans, root, inode,
 						 inode->i_size,
 						 BTRFS_EXTENT_DATA_KEY);
-		if (ret != -EAGAIN)
+		if (ret != -EAGAIN) {
+			err = ret;
 			break;
+		}
 
 		ret = btrfs_update_inode(trans, root, inode);
-		BUG_ON(ret);
+		if (ret) {
+			err = ret;
+			break;
+		}
 
 		nr = trans->blocks_used;
 		btrfs_end_transaction(trans, root);
@@ -6554,16 +6622,27 @@ static void btrfs_truncate(struct inode *inode)
 
 	if (ret == 0 && inode->i_nlink > 0) {
 		ret = btrfs_orphan_del(trans, inode);
-		BUG_ON(ret);
+		if (ret)
+			err = ret;
+	} else if (ret && inode->i_nlink > 0) {
+		/*
+		 * Failed to do the truncate, remove us from the in memory
+		 * orphan list.
+		 */
+		ret = btrfs_orphan_del(NULL, inode);
 	}
 
 	ret = btrfs_update_inode(trans, root, inode);
-	BUG_ON(ret);
+	if (ret && !err)
+		err = ret;
 
 	nr = trans->blocks_used;
 	ret = btrfs_end_transaction_throttle(trans, root);
-	BUG_ON(ret);
+	if (ret && !err)
+		err = ret;
 	btrfs_btree_balance_dirty(root, nr);
+
+	return err;
 }
 
 /*
@@ -6630,9 +6709,8 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
 	ei->index_cnt = (u64)-1;
 	ei->last_unlink_trans = 0;
 
-	spin_lock_init(&ei->accounting_lock);
 	atomic_set(&ei->outstanding_extents, 0);
-	ei->reserved_extents = 0;
+	atomic_set(&ei->reserved_extents, 0);
 
 	ei->ordered_data_close = 0;
 	ei->orphan_meta_reserved = 0;
@@ -6668,7 +6746,7 @@ void btrfs_destroy_inode(struct inode *inode)
 	WARN_ON(!list_empty(&inode->i_dentry));
 	WARN_ON(inode->i_data.nrpages);
 	WARN_ON(atomic_read(&BTRFS_I(inode)->outstanding_extents));
-	WARN_ON(BTRFS_I(inode)->reserved_extents);
+	WARN_ON(atomic_read(&BTRFS_I(inode)->reserved_extents));
 
 	/*
 	 * This can happen where we create an inode, but somebody else also
@@ -6760,6 +6838,8 @@ void btrfs_destroy_cachep(void)
 		kmem_cache_destroy(btrfs_transaction_cachep);
 	if (btrfs_path_cachep)
 		kmem_cache_destroy(btrfs_path_cachep);
+	if (btrfs_free_space_cachep)
+		kmem_cache_destroy(btrfs_free_space_cachep);
 }
 
 int btrfs_init_cachep(void)
@@ -6788,6 +6868,12 @@ int btrfs_init_cachep(void)
 	if (!btrfs_path_cachep)
 		goto fail;
 
+	btrfs_free_space_cachep = kmem_cache_create("btrfs_free_space_cache",
+			sizeof(struct btrfs_free_space), 0,
+			SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD, NULL);
+	if (!btrfs_free_space_cachep)
+		goto fail;
+
 	return 0;
 fail:
 	btrfs_destroy_cachep();
@@ -6806,6 +6892,26 @@ static int btrfs_getattr(struct vfsmount *mnt,
 	return 0;
 }
 
+/*
+ * If a file is moved, it will inherit the cow and compression flags of the new
+ * directory.
+ */
+static void fixup_inode_flags(struct inode *dir, struct inode *inode)
+{
+	struct btrfs_inode *b_dir = BTRFS_I(dir);
+	struct btrfs_inode *b_inode = BTRFS_I(inode);
+
+	if (b_dir->flags & BTRFS_INODE_NODATACOW)
+		b_inode->flags |= BTRFS_INODE_NODATACOW;
+	else
+		b_inode->flags &= ~BTRFS_INODE_NODATACOW;
+
+	if (b_dir->flags & BTRFS_INODE_COMPRESS)
+		b_inode->flags |= BTRFS_INODE_COMPRESS;
+	else
+		b_inode->flags &= ~BTRFS_INODE_COMPRESS;
+}
+
 static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 			   struct inode *new_dir, struct dentry *new_dentry)
 {
@@ -6908,11 +7014,12 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 					old_dentry->d_name.name,
 					old_dentry->d_name.len);
 	} else {
-		btrfs_inc_nlink(old_dentry->d_inode);
-		ret = btrfs_unlink_inode(trans, root, old_dir,
-					 old_dentry->d_inode,
-					 old_dentry->d_name.name,
-					 old_dentry->d_name.len);
+		ret = __btrfs_unlink_inode(trans, root, old_dir,
+					old_dentry->d_inode,
+					old_dentry->d_name.name,
+					old_dentry->d_name.len);
+		if (!ret)
+			ret = btrfs_update_inode(trans, root, old_inode);
 	}
 	BUG_ON(ret);
 
@@ -6939,6 +7046,8 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 		}
 	}
 
+	fixup_inode_flags(new_dir, old_inode);
+
 	ret = btrfs_add_link(trans, new_dir, old_inode,
 			     new_dentry->d_name.name,
 			     new_dentry->d_name.len, 0, index);
@@ -7340,7 +7449,6 @@ static const struct address_space_operations btrfs_aops = {
 	.writepage	= btrfs_writepage,
 	.writepages	= btrfs_writepages,
 	.readpages	= btrfs_readpages,
-	.sync_page	= block_sync_page,
 	.direct_IO	= btrfs_direct_IO,
 	.invalidatepage = btrfs_invalidatepage,
 	.releasepage	= btrfs_releasepage,
@@ -7356,7 +7464,6 @@ static const struct address_space_operations btrfs_symlink_aops = {
 };
 
 static const struct inode_operations btrfs_file_inode_operations = {
-	.truncate	= btrfs_truncate,
 	.getattr	= btrfs_getattr,
 	.setattr	= btrfs_setattr,
 	.setxattr	= btrfs_setxattr,
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 5fdb2ab..7c07fe2 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -40,6 +40,7 @@
 #include <linux/xattr.h>
 #include <linux/vmalloc.h>
 #include <linux/slab.h>
+#include <linux/blkdev.h>
 #include "compat.h"
 #include "ctree.h"
 #include "disk-io.h"
@@ -138,6 +139,24 @@ static int btrfs_ioctl_getflags(struct file *file, void __user *arg)
 	return 0;
 }
 
+static int check_flags(unsigned int flags)
+{
+	if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
+		      FS_NOATIME_FL | FS_NODUMP_FL | \
+		      FS_SYNC_FL | FS_DIRSYNC_FL | \
+		      FS_NOCOMP_FL | FS_COMPR_FL | \
+		      FS_NOCOW_FL | FS_COW_FL))
+		return -EOPNOTSUPP;
+
+	if ((flags & FS_NOCOMP_FL) && (flags & FS_COMPR_FL))
+		return -EINVAL;
+
+	if ((flags & FS_NOCOW_FL) && (flags & FS_COW_FL))
+		return -EINVAL;
+
+	return 0;
+}
+
 static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
 {
 	struct inode *inode = file->f_path.dentry->d_inode;
@@ -153,12 +172,11 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
 	if (copy_from_user(&flags, arg, sizeof(flags)))
 		return -EFAULT;
 
-	if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
-		      FS_NOATIME_FL | FS_NODUMP_FL | \
-		      FS_SYNC_FL | FS_DIRSYNC_FL))
-		return -EOPNOTSUPP;
+	ret = check_flags(flags);
+	if (ret)
+		return ret;
 
-	if (!is_owner_or_cap(inode))
+	if (!inode_owner_or_capable(inode))
 		return -EACCES;
 
 	mutex_lock(&inode->i_mutex);
@@ -201,6 +219,22 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
 	else
 		ip->flags &= ~BTRFS_INODE_DIRSYNC;
 
+	/*
+	 * The COMPRESS flag can only be changed by users, while the NOCOMPRESS
+	 * flag may be changed automatically if compression code won't make
+	 * things smaller.
+	 */
+	if (flags & FS_NOCOMP_FL) {
+		ip->flags &= ~BTRFS_INODE_COMPRESS;
+		ip->flags |= BTRFS_INODE_NOCOMPRESS;
+	} else if (flags & FS_COMPR_FL) {
+		ip->flags |= BTRFS_INODE_COMPRESS;
+		ip->flags &= ~BTRFS_INODE_NOCOMPRESS;
+	}
+	if (flags & FS_NOCOW_FL)
+		ip->flags |= BTRFS_INODE_NODATACOW;
+	else if (flags & FS_COW_FL)
+		ip->flags &= ~BTRFS_INODE_NODATACOW;
 
 	trans = btrfs_join_transaction(root, 1);
 	BUG_ON(IS_ERR(trans));
@@ -213,9 +247,11 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
 	btrfs_end_transaction(trans, root);
 
 	mnt_drop_write(file->f_path.mnt);
+
+	ret = 0;
  out_unlock:
 	mutex_unlock(&inode->i_mutex);
-	return 0;
+	return ret;
 }
 
 static int btrfs_ioctl_getversion(struct file *file, int __user *arg)
@@ -225,6 +261,49 @@ static int btrfs_ioctl_getversion(struct file *file, int __user *arg)
 	return put_user(inode->i_generation, arg);
 }
 
+static noinline int btrfs_ioctl_fitrim(struct file *file, void __user *arg)
+{
+	struct btrfs_root *root = fdentry(file)->d_sb->s_fs_info;
+	struct btrfs_fs_info *fs_info = root->fs_info;
+	struct btrfs_device *device;
+	struct request_queue *q;
+	struct fstrim_range range;
+	u64 minlen = ULLONG_MAX;
+	u64 num_devices = 0;
+	int ret;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+
+	mutex_lock(&fs_info->fs_devices->device_list_mutex);
+	list_for_each_entry(device, &fs_info->fs_devices->devices, dev_list) {
+		if (!device->bdev)
+			continue;
+		q = bdev_get_queue(device->bdev);
+		if (blk_queue_discard(q)) {
+			num_devices++;
+			minlen = min((u64)q->limits.discard_granularity,
+				     minlen);
+		}
+	}
+	mutex_unlock(&fs_info->fs_devices->device_list_mutex);
+	if (!num_devices)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&range, arg, sizeof(range)))
+		return -EFAULT;
+
+	range.minlen = max(range.minlen, minlen);
+	ret = btrfs_trim_fs(root, &range);
+	if (ret < 0)
+		return ret;
+
+	if (copy_to_user(arg, &range, sizeof(range)))
+		return -EFAULT;
+
+	return 0;
+}
+
 static noinline int create_subvol(struct btrfs_root *root,
 				  struct dentry *dentry,
 				  char *name, int namelen,
@@ -409,7 +488,9 @@ static int create_snapshot(struct btrfs_root *root, struct dentry *dentry,
 	if (ret)
 		goto fail;
 
-	btrfs_orphan_cleanup(pending_snapshot->snap);
+	ret = btrfs_orphan_cleanup(pending_snapshot->snap);
+	if (ret)
+		goto fail;
 
 	parent = dget_parent(dentry);
 	inode = btrfs_lookup_dentry(parent->d_inode, dentry);
@@ -1077,7 +1158,7 @@ static noinline int btrfs_ioctl_subvol_setflags(struct file *file,
 	if (flags & ~BTRFS_SUBVOL_RDONLY)
 		return -EOPNOTSUPP;
 
-	if (!is_owner_or_cap(inode))
+	if (!inode_owner_or_capable(inode))
 		return -EACCES;
 
 	down_write(&root->fs_info->subvol_sem);
@@ -2348,12 +2429,15 @@ static noinline long btrfs_ioctl_start_sync(struct file *file, void __user *argp
 	struct btrfs_root *root = BTRFS_I(file->f_dentry->d_inode)->root;
 	struct btrfs_trans_handle *trans;
 	u64 transid;
+	int ret;
 
 	trans = btrfs_start_transaction(root, 0);
 	if (IS_ERR(trans))
 		return PTR_ERR(trans);
 	transid = trans->transid;
-	btrfs_commit_transaction_async(trans, root, 0);
+	ret = btrfs_commit_transaction_async(trans, root, 0);
+	if (ret)
+		return ret;
 
 	if (argp)
 		if (copy_to_user(argp, &transid, sizeof(transid)))
@@ -2388,6 +2472,8 @@ long btrfs_ioctl(struct file *file, unsigned int
 		return btrfs_ioctl_setflags(file, argp);
 	case FS_IOC_GETVERSION:
 		return btrfs_ioctl_getversion(file, argp);
+	case FITRIM:
+		return btrfs_ioctl_fitrim(file, argp);
 	case BTRFS_IOC_SNAP_CREATE:
 		return btrfs_ioctl_snap_create(file, argp, 0);
 	case BTRFS_IOC_SNAP_CREATE_V2:
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index 083a554..a1c9404 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -202,6 +202,8 @@ static int __btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
 	INIT_LIST_HEAD(&entry->list);
 	INIT_LIST_HEAD(&entry->root_extent_list);
 
+	trace_btrfs_ordered_extent_add(inode, entry);
+
 	spin_lock(&tree->lock);
 	node = tree_insert(&tree->tree, file_offset,
 			   &entry->rb_node);
@@ -387,6 +389,8 @@ int btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry)
 	struct list_head *cur;
 	struct btrfs_ordered_sum *sum;
 
+	trace_btrfs_ordered_extent_put(entry->inode, entry);
+
 	if (atomic_dec_and_test(&entry->refs)) {
 		while (!list_empty(&entry->list)) {
 			cur = entry->list.next;
@@ -420,6 +424,8 @@ static int __btrfs_remove_ordered_extent(struct inode *inode,
 	spin_lock(&root->fs_info->ordered_extent_lock);
 	list_del_init(&entry->root_extent_list);
 
+	trace_btrfs_ordered_extent_remove(inode, entry);
+
 	/*
 	 * we have no more ordered extents for this inode and
 	 * no dirty pages.  We can safely remove it from the
@@ -585,6 +591,8 @@ void btrfs_start_ordered_extent(struct inode *inode,
 	u64 start = entry->file_offset;
 	u64 end = start + entry->len - 1;
 
+	trace_btrfs_ordered_extent_start(inode, entry);
+
 	/*
 	 * pages in the range can be dirty, clean or writeback.  We
 	 * start IO on any dirty ones so the wait doesn't stall waiting
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 31ade58..58250e0 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1724,6 +1724,7 @@ again:
 
 			eb = read_tree_block(dest, old_bytenr, blocksize,
 					     old_ptr_gen);
+			BUG_ON(!eb);
 			btrfs_tree_lock(eb);
 			if (cow) {
 				ret = btrfs_cow_block(trans, dest, eb, parent,
@@ -2513,6 +2514,10 @@ static int do_relocation(struct btrfs_trans_handle *trans,
 		blocksize = btrfs_level_size(root, node->level);
 		generation = btrfs_node_ptr_generation(upper->eb, slot);
 		eb = read_tree_block(root, bytenr, blocksize, generation);
+		if (!eb) {
+			err = -EIO;
+			goto next;
+		}
 		btrfs_tree_lock(eb);
 		btrfs_set_lock_blocking(eb);
 
@@ -2670,6 +2675,7 @@ static int get_tree_block_key(struct reloc_control *rc,
 	BUG_ON(block->key_ready);
 	eb = read_tree_block(rc->extent_root, block->bytenr,
 			     block->key.objectid, block->key.offset);
+	BUG_ON(!eb);
 	WARN_ON(btrfs_header_level(eb) != block->level);
 	if (block->level == 0)
 		btrfs_item_key_to_cpu(eb, &block->key, 0);
@@ -4209,7 +4215,7 @@ out:
 		if (IS_ERR(fs_root))
 			err = PTR_ERR(fs_root);
 		else
-			btrfs_orphan_cleanup(fs_root);
+			err = btrfs_orphan_cleanup(fs_root);
 	}
 	return err;
 }
diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index 6a1086e..29b2d7c 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -88,7 +88,8 @@ int btrfs_find_last_root(struct btrfs_root *root, u64 objectid,
 	search_key.offset = (u64)-1;
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path)
+		return -ENOMEM;
 	ret = btrfs_search_slot(NULL, root, &search_key, path, 0, 0);
 	if (ret < 0)
 		goto out;
@@ -332,7 +333,8 @@ int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 	struct extent_buffer *leaf;
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path)
+		return -ENOMEM;
 	ret = btrfs_search_slot(trans, root, key, path, -1, 1);
 	if (ret < 0)
 		goto out;
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index d39a989..2edfc03 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -52,6 +52,9 @@
 #include "export.h"
 #include "compression.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/btrfs.h>
+
 static const struct super_operations btrfs_super_ops;
 
 static const char *btrfs_decode_error(struct btrfs_fs_info *fs_info, int errno,
@@ -620,6 +623,8 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
 	struct btrfs_root *root = btrfs_sb(sb);
 	int ret;
 
+	trace_btrfs_sync_fs(wait);
+
 	if (!wait) {
 		filemap_flush(root->fs_info->btree_inode->i_mapping);
 		return 0;
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 3d73c8d..ce48eb5 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -57,7 +57,8 @@ static noinline int join_transaction(struct btrfs_root *root)
 	if (!cur_trans) {
 		cur_trans = kmem_cache_alloc(btrfs_transaction_cachep,
 					     GFP_NOFS);
-		BUG_ON(!cur_trans);
+		if (!cur_trans)
+			return -ENOMEM;
 		root->fs_info->generation++;
 		cur_trans->num_writers = 1;
 		cur_trans->num_joined = 0;
@@ -195,7 +196,11 @@ again:
 		wait_current_trans(root);
 
 	ret = join_transaction(root);
-	BUG_ON(ret);
+	if (ret < 0) {
+		if (type != TRANS_JOIN_NOLOCK)
+			mutex_unlock(&root->fs_info->trans_mutex);
+		return ERR_PTR(ret);
+	}
 
 	cur_trans = root->fs_info->running_transaction;
 	cur_trans->use_count++;
@@ -1156,7 +1161,8 @@ int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans,
 	struct btrfs_transaction *cur_trans;
 
 	ac = kmalloc(sizeof(*ac), GFP_NOFS);
-	BUG_ON(!ac);
+	if (!ac)
+		return -ENOMEM;
 
 	INIT_DELAYED_WORK(&ac->work, do_async_commit);
 	ac->root = root;
@@ -1389,6 +1395,8 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
 	put_transaction(cur_trans);
 	put_transaction(cur_trans);
 
+	trace_btrfs_transaction_commit(root);
+
 	mutex_unlock(&root->fs_info->trans_mutex);
 
 	if (current->journal_info == trans)
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index a4bbb85..c50271a 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -799,12 +799,12 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
 	struct inode *dir;
 	int ret;
 	struct btrfs_inode_ref *ref;
-	struct btrfs_dir_item *di;
 	struct inode *inode;
 	char *name;
 	int namelen;
 	unsigned long ref_ptr;
 	unsigned long ref_end;
+	int search_done = 0;
 
 	/*
 	 * it is possible that we didn't log all the parent directories
@@ -845,7 +845,10 @@ again:
 	 * existing back reference, and we don't want to create
 	 * dangling pointers in the directory.
 	 */
-conflict_again:
+
+	if (search_done)
+		goto insert;
+
 	ret = btrfs_search_slot(NULL, root, key, path, 0, 0);
 	if (ret == 0) {
 		char *victim_name;
@@ -886,37 +889,21 @@ conflict_again:
 				ret = btrfs_unlink_inode(trans, root, dir,
 							 inode, victim_name,
 							 victim_name_len);
-				kfree(victim_name);
-				btrfs_release_path(root, path);
-				goto conflict_again;
 			}
 			kfree(victim_name);
 			ptr = (unsigned long)(victim_ref + 1) + victim_name_len;
 		}
 		BUG_ON(ret);
-	}
-	btrfs_release_path(root, path);
-
-	/* look for a conflicting sequence number */
-	di = btrfs_lookup_dir_index_item(trans, root, path, dir->i_ino,
-					 btrfs_inode_ref_index(eb, ref),
-					 name, namelen, 0);
-	if (di && !IS_ERR(di)) {
-		ret = drop_one_dir_item(trans, root, path, dir, di);
-		BUG_ON(ret);
-	}
-	btrfs_release_path(root, path);
 
-
-	/* look for a conflicting name */
-	di = btrfs_lookup_dir_item(trans, root, path, dir->i_ino,
-				   name, namelen, 0);
-	if (di && !IS_ERR(di)) {
-		ret = drop_one_dir_item(trans, root, path, dir, di);
-		BUG_ON(ret);
+		/*
+		 * NOTE: we have searched root tree and checked the
+		 * coresponding ref, it does not need to check again.
+		 */
+		search_done = 1;
 	}
 	btrfs_release_path(root, path);
 
+insert:
 	/* insert our name */
 	ret = btrfs_add_link(trans, dir, inode, name, namelen, 0,
 			     btrfs_inode_ref_index(eb, ref));
@@ -1286,6 +1273,8 @@ static noinline int replay_one_dir_item(struct btrfs_trans_handle *trans,
 	ptr_end = ptr + item_size;
 	while (ptr < ptr_end) {
 		di = (struct btrfs_dir_item *)ptr;
+		if (verify_dir_item(root, eb, di))
+			return -EIO;
 		name_len = btrfs_dir_name_len(eb, di);
 		ret = replay_one_name(trans, root, path, eb, di, key);
 		BUG_ON(ret);
@@ -1412,6 +1401,11 @@ again:
 	ptr_end = ptr + item_size;
 	while (ptr < ptr_end) {
 		di = (struct btrfs_dir_item *)ptr;
+		if (verify_dir_item(root, eb, di)) {
+			ret = -EIO;
+			goto out;
+		}
+
 		name_len = btrfs_dir_name_len(eb, di);
 		name = kmalloc(name_len, GFP_NOFS);
 		if (!name) {
@@ -1821,7 +1815,8 @@ static int walk_log_tree(struct btrfs_trans_handle *trans,
 	int orig_level;
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path)
+		return -ENOMEM;
 
 	level = btrfs_header_level(log->node);
 	orig_level = level;
@@ -3107,9 +3102,11 @@ int btrfs_recover_log_trees(struct btrfs_root *log_root_tree)
 		.stage = 0,
 	};
 
-	fs_info->log_root_recovering = 1;
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path)
+		return -ENOMEM;
+
+	fs_info->log_root_recovering = 1;
 
 	trans = btrfs_start_transaction(fs_info->tree_root, 0);
 	BUG_ON(IS_ERR(trans));
@@ -3117,7 +3114,8 @@ int btrfs_recover_log_trees(struct btrfs_root *log_root_tree)
 	wc.trans = trans;
 	wc.pin = 1;
 
-	walk_log_tree(trans, log_root_tree, &wc);
+	ret = walk_log_tree(trans, log_root_tree, &wc);
+	BUG_ON(ret);
 
 again:
 	key.objectid = BTRFS_TREE_LOG_OBJECTID;
@@ -3141,8 +3139,7 @@ again:
 
 		log = btrfs_read_fs_root_no_radix(log_root_tree,
 						  &found_key);
-		BUG_ON(!log);
-
+		BUG_ON(IS_ERR(log));
 
 		tmp_key.objectid = found_key.offset;
 		tmp_key.type = BTRFS_ROOT_ITEM_KEY;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index dd13eb8..309a57b 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -33,17 +33,6 @@
 #include "volumes.h"
 #include "async-thread.h"
 
-struct map_lookup {
-	u64 type;
-	int io_align;
-	int io_width;
-	int stripe_len;
-	int sector_size;
-	int num_stripes;
-	int sub_stripes;
-	struct btrfs_bio_stripe stripes[];
-};
-
 static int init_first_rw_device(struct btrfs_trans_handle *trans,
 				struct btrfs_root *root,
 				struct btrfs_device *device);
@@ -162,7 +151,6 @@ static noinline int run_scheduled_bios(struct btrfs_device *device)
 	struct bio *cur;
 	int again = 0;
 	unsigned long num_run;
-	unsigned long num_sync_run;
 	unsigned long batch_run = 0;
 	unsigned long limit;
 	unsigned long last_waited = 0;
@@ -173,11 +161,6 @@ static noinline int run_scheduled_bios(struct btrfs_device *device)
 	limit = btrfs_async_submit_limit(fs_info);
 	limit = limit * 2 / 3;
 
-	/* we want to make sure that every time we switch from the sync
-	 * list to the normal list, we unplug
-	 */
-	num_sync_run = 0;
-
 loop:
 	spin_lock(&device->io_lock);
 
@@ -223,15 +206,6 @@ loop_lock:
 
 	spin_unlock(&device->io_lock);
 
-	/*
-	 * if we're doing the regular priority list, make sure we unplug
-	 * for any high prio bios we've sent down
-	 */
-	if (pending_bios == &device->pending_bios && num_sync_run > 0) {
-		num_sync_run = 0;
-		blk_run_backing_dev(bdi, NULL);
-	}
-
 	while (pending) {
 
 		rmb();
@@ -259,19 +233,11 @@ loop_lock:
 
 		BUG_ON(atomic_read(&cur->bi_cnt) == 0);
 
-		if (cur->bi_rw & REQ_SYNC)
-			num_sync_run++;
-
 		submit_bio(cur->bi_rw, cur);
 		num_run++;
 		batch_run++;
-		if (need_resched()) {
-			if (num_sync_run) {
-				blk_run_backing_dev(bdi, NULL);
-				num_sync_run = 0;
-			}
+		if (need_resched())
 			cond_resched();
-		}
 
 		/*
 		 * we made progress, there is more work to do and the bdi
@@ -304,13 +270,8 @@ loop_lock:
 				 * against it before looping
 				 */
 				last_waited = ioc->last_waited;
-				if (need_resched()) {
-					if (num_sync_run) {
-						blk_run_backing_dev(bdi, NULL);
-						num_sync_run = 0;
-					}
+				if (need_resched())
 					cond_resched();
-				}
 				continue;
 			}
 			spin_lock(&device->io_lock);
@@ -323,22 +284,6 @@ loop_lock:
 		}
 	}
 
-	if (num_sync_run) {
-		num_sync_run = 0;
-		blk_run_backing_dev(bdi, NULL);
-	}
-	/*
-	 * IO has already been through a long path to get here.  Checksumming,
-	 * async helper threads, perhaps compression.  We've done a pretty
-	 * good job of collecting a batch of IO and should just unplug
-	 * the device right away.
-	 *
-	 * This will help anyone who is waiting on the IO, they might have
-	 * already unplugged, but managed to do so before the bio they
-	 * cared about found its way down here.
-	 */
-	blk_run_backing_dev(bdi, NULL);
-
 	cond_resched();
 	if (again)
 		goto loop;
@@ -1923,6 +1868,8 @@ static int btrfs_relocate_chunk(struct btrfs_root *root,
 
 	BUG_ON(ret);
 
+	trace_btrfs_chunk_free(root, map, chunk_offset, em->len);
+
 	if (map->type & BTRFS_BLOCK_GROUP_SYSTEM) {
 		ret = btrfs_del_sys_chunk(root, chunk_objectid, chunk_offset);
 		BUG_ON(ret);
@@ -2650,6 +2597,8 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
 	*num_bytes = chunk_bytes_by_type(type, calc_size,
 					 map->num_stripes, sub_stripes);
 
+	trace_btrfs_chunk_alloc(info->chunk_root, map, start, *num_bytes);
+
 	em = alloc_extent_map(GFP_NOFS);
 	if (!em) {
 		ret = -ENOMEM;
@@ -2758,6 +2707,7 @@ static int __finish_chunk_alloc(struct btrfs_trans_handle *trans,
 					     item_size);
 		BUG_ON(ret);
 	}
+
 	kfree(chunk);
 	return 0;
 }
@@ -2955,14 +2905,17 @@ static int find_live_mirror(struct map_lookup *map, int first, int num,
 static int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
 			     u64 logical, u64 *length,
 			     struct btrfs_multi_bio **multi_ret,
-			     int mirror_num, struct page *unplug_page)
+			     int mirror_num)
 {
 	struct extent_map *em;
 	struct map_lookup *map;
 	struct extent_map_tree *em_tree = &map_tree->map_tree;
 	u64 offset;
 	u64 stripe_offset;
+	u64 stripe_end_offset;
 	u64 stripe_nr;
+	u64 stripe_nr_orig;
+	u64 stripe_nr_end;
 	int stripes_allocated = 8;
 	int stripes_required = 1;
 	int stripe_index;
@@ -2971,7 +2924,7 @@ static int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
 	int max_errors = 0;
 	struct btrfs_multi_bio *multi = NULL;
 
-	if (multi_ret && !(rw & REQ_WRITE))
+	if (multi_ret && !(rw & (REQ_WRITE | REQ_DISCARD)))
 		stripes_allocated = 1;
 again:
 	if (multi_ret) {
@@ -2987,11 +2940,6 @@ again:
 	em = lookup_extent_mapping(em_tree, logical, *length);
 	read_unlock(&em_tree->lock);
 
-	if (!em && unplug_page) {
-		kfree(multi);
-		return 0;
-	}
-
 	if (!em) {
 		printk(KERN_CRIT "unable to find logical %llu len %llu\n",
 		       (unsigned long long)logical,
@@ -3017,7 +2965,15 @@ again:
 			max_errors = 1;
 		}
 	}
-	if (multi_ret && (rw & REQ_WRITE) &&
+	if (rw & REQ_DISCARD) {
+		if (map->type & (BTRFS_BLOCK_GROUP_RAID0 |
+				 BTRFS_BLOCK_GROUP_RAID1 |
+				 BTRFS_BLOCK_GROUP_DUP |
+				 BTRFS_BLOCK_GROUP_RAID10)) {
+			stripes_required = map->num_stripes;
+		}
+	}
+	if (multi_ret && (rw & (REQ_WRITE | REQ_DISCARD)) &&
 	    stripes_allocated < stripes_required) {
 		stripes_allocated = map->num_stripes;
 		free_extent_map(em);
@@ -3037,23 +2993,37 @@ again:
 	/* stripe_offset is the offset of this block in its stripe*/
 	stripe_offset = offset - stripe_offset;
 
-	if (map->type & (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 |
-			 BTRFS_BLOCK_GROUP_RAID10 |
-			 BTRFS_BLOCK_GROUP_DUP)) {
+	if (rw & REQ_DISCARD)
+		*length = min_t(u64, em->len - offset, *length);
+	else if (map->type & (BTRFS_BLOCK_GROUP_RAID0 |
+			      BTRFS_BLOCK_GROUP_RAID1 |
+			      BTRFS_BLOCK_GROUP_RAID10 |
+			      BTRFS_BLOCK_GROUP_DUP)) {
 		/* we limit the length of each bio to what fits in a stripe */
 		*length = min_t(u64, em->len - offset,
-			      map->stripe_len - stripe_offset);
+				map->stripe_len - stripe_offset);
 	} else {
 		*length = em->len - offset;
 	}
 
-	if (!multi_ret && !unplug_page)
+	if (!multi_ret)
 		goto out;
 
 	num_stripes = 1;
 	stripe_index = 0;
-	if (map->type & BTRFS_BLOCK_GROUP_RAID1) {
-		if (unplug_page || (rw & REQ_WRITE))
+	stripe_nr_orig = stripe_nr;
+	stripe_nr_end = (offset + *length + map->stripe_len - 1) &
+			(~(map->stripe_len - 1));
+	do_div(stripe_nr_end, map->stripe_len);
+	stripe_end_offset = stripe_nr_end * map->stripe_len -
+			    (offset + *length);
+	if (map->type & BTRFS_BLOCK_GROUP_RAID0) {
+		if (rw & REQ_DISCARD)
+			num_stripes = min_t(u64, map->num_stripes,
+					    stripe_nr_end - stripe_nr_orig);
+		stripe_index = do_div(stripe_nr, map->num_stripes);
+	} else if (map->type & BTRFS_BLOCK_GROUP_RAID1) {
+		if (rw & (REQ_WRITE | REQ_DISCARD))
 			num_stripes = map->num_stripes;
 		else if (mirror_num)
 			stripe_index = mirror_num - 1;
@@ -3064,7 +3034,7 @@ again:
 		}
 
 	} else if (map->type & BTRFS_BLOCK_GROUP_DUP) {
-		if (rw & REQ_WRITE)
+		if (rw & (REQ_WRITE | REQ_DISCARD))
 			num_stripes = map->num_stripes;
 		else if (mirror_num)
 			stripe_index = mirror_num - 1;
@@ -3075,8 +3045,12 @@ again:
 		stripe_index = do_div(stripe_nr, factor);
 		stripe_index *= map->sub_stripes;
 
-		if (unplug_page || (rw & REQ_WRITE))
+		if (rw & REQ_WRITE)
 			num_stripes = map->sub_stripes;
+		else if (rw & REQ_DISCARD)
+			num_stripes = min_t(u64, map->sub_stripes *
+					    (stripe_nr_end - stripe_nr_orig),
+					    map->num_stripes);
 		else if (mirror_num)
 			stripe_index += mirror_num - 1;
 		else {
@@ -3094,24 +3068,101 @@ again:
 	}
 	BUG_ON(stripe_index >= map->num_stripes);
 
-	for (i = 0; i < num_stripes; i++) {
-		if (unplug_page) {
-			struct btrfs_device *device;
-			struct backing_dev_info *bdi;
-
-			device = map->stripes[stripe_index].dev;
-			if (device->bdev) {
-				bdi = blk_get_backing_dev_info(device->bdev);
-				if (bdi->unplug_io_fn)
-					bdi->unplug_io_fn(bdi, unplug_page);
-			}
-		} else {
+	if (rw & REQ_DISCARD) {
+		for (i = 0; i < num_stripes; i++) {
 			multi->stripes[i].physical =
 				map->stripes[stripe_index].physical +
 				stripe_offset + stripe_nr * map->stripe_len;
 			multi->stripes[i].dev = map->stripes[stripe_index].dev;
+
+			if (map->type & BTRFS_BLOCK_GROUP_RAID0) {
+				u64 stripes;
+				u32 last_stripe = 0;
+				int j;
+
+				div_u64_rem(stripe_nr_end - 1,
+					    map->num_stripes,
+					    &last_stripe);
+
+				for (j = 0; j < map->num_stripes; j++) {
+					u32 test;
+
+					div_u64_rem(stripe_nr_end - 1 - j,
+						    map->num_stripes, &test);
+					if (test == stripe_index)
+						break;
+				}
+				stripes = stripe_nr_end - 1 - j;
+				do_div(stripes, map->num_stripes);
+				multi->stripes[i].length = map->stripe_len *
+					(stripes - stripe_nr + 1);
+
+				if (i == 0) {
+					multi->stripes[i].length -=
+						stripe_offset;
+					stripe_offset = 0;
+				}
+				if (stripe_index == last_stripe)
+					multi->stripes[i].length -=
+						stripe_end_offset;
+			} else if (map->type & BTRFS_BLOCK_GROUP_RAID10) {
+				u64 stripes;
+				int j;
+				int factor = map->num_stripes /
+					     map->sub_stripes;
+				u32 last_stripe = 0;
+
+				div_u64_rem(stripe_nr_end - 1,
+					    factor, &last_stripe);
+				last_stripe *= map->sub_stripes;
+
+				for (j = 0; j < factor; j++) {
+					u32 test;
+
+					div_u64_rem(stripe_nr_end - 1 - j,
+						    factor, &test);
+
+					if (test ==
+					    stripe_index / map->sub_stripes)
+						break;
+				}
+				stripes = stripe_nr_end - 1 - j;
+				do_div(stripes, factor);
+				multi->stripes[i].length = map->stripe_len *
+					(stripes - stripe_nr + 1);
+
+				if (i < map->sub_stripes) {
+					multi->stripes[i].length -=
+						stripe_offset;
+					if (i == map->sub_stripes - 1)
+						stripe_offset = 0;
+				}
+				if (stripe_index >= last_stripe &&
+				    stripe_index <= (last_stripe +
+						     map->sub_stripes - 1)) {
+					multi->stripes[i].length -=
+						stripe_end_offset;
+				}
+			} else
+				multi->stripes[i].length = *length;
+
+			stripe_index++;
+			if (stripe_index == map->num_stripes) {
+				/* This could only happen for RAID0/10 */
+				stripe_index = 0;
+				stripe_nr++;
+			}
+		}
+	} else {
+		for (i = 0; i < num_stripes; i++) {
+			multi->stripes[i].physical =
+				map->stripes[stripe_index].physical +
+				stripe_offset +
+				stripe_nr * map->stripe_len;
+			multi->stripes[i].dev =
+				map->stripes[stripe_index].dev;
+			stripe_index++;
 		}
-		stripe_index++;
 	}
 	if (multi_ret) {
 		*multi_ret = multi;
@@ -3128,7 +3179,7 @@ int btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
 		      struct btrfs_multi_bio **multi_ret, int mirror_num)
 {
 	return __btrfs_map_block(map_tree, rw, logical, length, multi_ret,
-				 mirror_num, NULL);
+				 mirror_num);
 }
 
 int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree,
@@ -3196,14 +3247,6 @@ int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree,
 	return 0;
 }
 
-int btrfs_unplug_page(struct btrfs_mapping_tree *map_tree,
-		      u64 logical, struct page *page)
-{
-	u64 length = PAGE_CACHE_SIZE;
-	return __btrfs_map_block(map_tree, READ, logical, &length,
-				 NULL, 0, page);
-}
-
 static void end_bio_multi_stripe(struct bio *bio, int err)
 {
 	struct btrfs_multi_bio *multi = bio->bi_private;
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 7fb59d4..cc2eada 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -126,6 +126,7 @@ struct btrfs_fs_devices {
 struct btrfs_bio_stripe {
 	struct btrfs_device *dev;
 	u64 physical;
+	u64 length; /* only used for discard mappings */
 };
 
 struct btrfs_multi_bio {
@@ -145,6 +146,17 @@ struct btrfs_device_info {
 	u64 max_avail;
 };
 
+struct map_lookup {
+	u64 type;
+	int io_align;
+	int io_width;
+	int stripe_len;
+	int sector_size;
+	int num_stripes;
+	int sub_stripes;
+	struct btrfs_bio_stripe stripes[];
+};
+
 /* Used to sort the devices by max_avail(descending sort) */
 int btrfs_cmp_device_free_bytes(const void *dev_info1, const void *dev_info2);
 
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index d779cef..a5303b8 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -242,6 +242,8 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
 			break;
 
 		di = btrfs_item_ptr(leaf, slot, struct btrfs_dir_item);
+		if (verify_dir_item(root, leaf, di))
+			continue;
 
 		name_len = btrfs_dir_name_len(leaf, di);
 		total_size += name_len + 1;
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c
index f5ec2d4..faccd47 100644
--- a/fs/btrfs/zlib.c
+++ b/fs/btrfs/zlib.c
@@ -57,7 +57,8 @@ static struct list_head *zlib_alloc_workspace(void)
 	if (!workspace)
 		return ERR_PTR(-ENOMEM);
 
-	workspace->def_strm.workspace = vmalloc(zlib_deflate_workspacesize());
+	workspace->def_strm.workspace = vmalloc(zlib_deflate_workspacesize(
+						MAX_WBITS, MAX_MEM_LEVEL));
 	workspace->inf_strm.workspace = vmalloc(zlib_inflate_workspacesize());
 	workspace->buf = kmalloc(PAGE_CACHE_SIZE, GFP_NOFS);
 	if (!workspace->def_strm.workspace ||
diff --git a/fs/buffer.c b/fs/buffer.c
index 2219a76..a08bb8e 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -54,23 +54,15 @@ init_buffer(struct buffer_head *bh, bh_end_io_t *handler, void *private)
 }
 EXPORT_SYMBOL(init_buffer);
 
-static int sync_buffer(void *word)
+static int sleep_on_buffer(void *word)
 {
-	struct block_device *bd;
-	struct buffer_head *bh
-		= container_of(word, struct buffer_head, b_state);
-
-	smp_mb();
-	bd = bh->b_bdev;
-	if (bd)
-		blk_run_address_space(bd->bd_inode->i_mapping);
 	io_schedule();
 	return 0;
 }
 
 void __lock_buffer(struct buffer_head *bh)
 {
-	wait_on_bit_lock(&bh->b_state, BH_Lock, sync_buffer,
+	wait_on_bit_lock(&bh->b_state, BH_Lock, sleep_on_buffer,
 							TASK_UNINTERRUPTIBLE);
 }
 EXPORT_SYMBOL(__lock_buffer);
@@ -90,7 +82,7 @@ EXPORT_SYMBOL(unlock_buffer);
  */
 void __wait_on_buffer(struct buffer_head * bh)
 {
-	wait_on_bit(&bh->b_state, BH_Lock, sync_buffer, TASK_UNINTERRUPTIBLE);
+	wait_on_bit(&bh->b_state, BH_Lock, sleep_on_buffer, TASK_UNINTERRUPTIBLE);
 }
 EXPORT_SYMBOL(__wait_on_buffer);
 
@@ -749,10 +741,12 @@ static int fsync_buffers_list(spinlock_t *lock, struct list_head *list)
 {
 	struct buffer_head *bh;
 	struct list_head tmp;
-	struct address_space *mapping, *prev_mapping = NULL;
+	struct address_space *mapping;
 	int err = 0, err2;
+	struct blk_plug plug;
 
 	INIT_LIST_HEAD(&tmp);
+	blk_start_plug(&plug);
 
 	spin_lock(lock);
 	while (!list_empty(list)) {
@@ -775,7 +769,7 @@ static int fsync_buffers_list(spinlock_t *lock, struct list_head *list)
 				 * still in flight on potentially older
 				 * contents.
 				 */
-				write_dirty_buffer(bh, WRITE_SYNC_PLUG);
+				write_dirty_buffer(bh, WRITE_SYNC);
 
 				/*
 				 * Kick off IO for the previous mapping. Note
@@ -783,16 +777,16 @@ static int fsync_buffers_list(spinlock_t *lock, struct list_head *list)
 				 * wait_on_buffer() will do that for us
 				 * through sync_buffer().
 				 */
-				if (prev_mapping && prev_mapping != mapping)
-					blk_run_address_space(prev_mapping);
-				prev_mapping = mapping;
-
 				brelse(bh);
 				spin_lock(lock);
 			}
 		}
 	}
 
+	spin_unlock(lock);
+	blk_finish_plug(&plug);
+	spin_lock(lock);
+
 	while (!list_empty(&tmp)) {
 		bh = BH_ENTRY(tmp.prev);
 		get_bh(bh);
@@ -1144,7 +1138,7 @@ __getblk_slow(struct block_device *bdev, sector_t block, int size)
  * inode list.
  *
  * mark_buffer_dirty() is atomic.  It takes bh->b_page->mapping->private_lock,
- * mapping->tree_lock and the global inode_lock.
+ * mapping->tree_lock and mapping->host->i_lock.
  */
 void mark_buffer_dirty(struct buffer_head *bh)
 {
@@ -1614,14 +1608,8 @@ EXPORT_SYMBOL(unmap_underlying_metadata);
  * prevents this contention from occurring.
  *
  * If block_write_full_page() is called with wbc->sync_mode ==
- * WB_SYNC_ALL, the writes are posted using WRITE_SYNC_PLUG; this
- * causes the writes to be flagged as synchronous writes, but the
- * block device queue will NOT be unplugged, since usually many pages
- * will be pushed to the out before the higher-level caller actually
- * waits for the writes to be completed.  The various wait functions,
- * such as wait_on_writeback_range() will ultimately call sync_page()
- * which will ultimately call blk_run_backing_dev(), which will end up
- * unplugging the device queue.
+ * WB_SYNC_ALL, the writes are posted using WRITE_SYNC; this
+ * causes the writes to be flagged as synchronous writes.
  */
 static int __block_write_full_page(struct inode *inode, struct page *page,
 			get_block_t *get_block, struct writeback_control *wbc,
@@ -1634,7 +1622,7 @@ static int __block_write_full_page(struct inode *inode, struct page *page,
 	const unsigned blocksize = 1 << inode->i_blkbits;
 	int nr_underway = 0;
 	int write_op = (wbc->sync_mode == WB_SYNC_ALL ?
-			WRITE_SYNC_PLUG : WRITE);
+			WRITE_SYNC : WRITE);
 
 	BUG_ON(!PageLocked(page));
 
@@ -3138,17 +3126,6 @@ out:
 }
 EXPORT_SYMBOL(try_to_free_buffers);
 
-void block_sync_page(struct page *page)
-{
-	struct address_space *mapping;
-
-	smp_mb();
-	mapping = page_mapping(page);
-	if (mapping)
-		blk_run_backing_dev(mapping->backing_dev_info, page);
-}
-EXPORT_SYMBOL(block_sync_page);
-
 /*
  * There are no bdflush tunables left.  But distributions are
  * still running obsolete flush daemons, so we terminate them here.
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 561438b..37368ba 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -92,7 +92,7 @@ static int ceph_set_page_dirty(struct page *page)
 		ci->i_head_snapc = ceph_get_snap_context(snapc);
 	++ci->i_wrbuffer_ref_head;
 	if (ci->i_wrbuffer_ref == 0)
-		igrab(inode);
+		ihold(inode);
 	++ci->i_wrbuffer_ref;
 	dout("%p set_page_dirty %p idx %lu head %d/%d -> %d/%d "
 	     "snapc %p seq %lld (%d snaps)\n",
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
index 08f65fa..0dba691 100644
--- a/fs/ceph/debugfs.c
+++ b/fs/ceph/debugfs.c
@@ -210,8 +210,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
 	if (!fsc->debugfs_congestion_kb)
 		goto out;
 
-	dout("a\n");
-
 	snprintf(name, sizeof(name), "../../bdi/%s",
 		 dev_name(fsc->backing_dev_info.dev));
 	fsc->debugfs_bdi =
@@ -221,7 +219,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
 	if (!fsc->debugfs_bdi)
 		goto out;
 
-	dout("b\n");
 	fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
 					0600,
 					fsc->client->debugfs_dir,
@@ -230,7 +227,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
 	if (!fsc->debugfs_mdsmap)
 		goto out;
 
-	dout("ca\n");
 	fsc->debugfs_mdsc = debugfs_create_file("mdsc",
 						0600,
 						fsc->client->debugfs_dir,
@@ -239,7 +235,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
 	if (!fsc->debugfs_mdsc)
 		goto out;
 
-	dout("da\n");
 	fsc->debugfs_caps = debugfs_create_file("caps",
 						   0400,
 						   fsc->client->debugfs_dir,
@@ -248,7 +243,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
 	if (!fsc->debugfs_caps)
 		goto out;
 
-	dout("ea\n");
 	fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
 					0600,
 					fsc->client->debugfs_dir,
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index ebafa65..1a867a3 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -161,7 +161,7 @@ more:
 	filp->f_pos = di->offset;
 	err = filldir(dirent, dentry->d_name.name,
 		      dentry->d_name.len, di->offset,
-		      dentry->d_inode->i_ino,
+		      ceph_translate_ino(dentry->d_sb, dentry->d_inode->i_ino),
 		      dentry->d_inode->i_mode >> 12);
 
 	if (last) {
@@ -245,15 +245,17 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
 
 		dout("readdir off 0 -> '.'\n");
 		if (filldir(dirent, ".", 1, ceph_make_fpos(0, 0),
-			    inode->i_ino, inode->i_mode >> 12) < 0)
+			    ceph_translate_ino(inode->i_sb, inode->i_ino),
+			    inode->i_mode >> 12) < 0)
 			return 0;
 		filp->f_pos = 1;
 		off = 1;
 	}
 	if (filp->f_pos == 1) {
+		ino_t ino = filp->f_dentry->d_parent->d_inode->i_ino;
 		dout("readdir off 1 -> '..'\n");
 		if (filldir(dirent, "..", 2, ceph_make_fpos(0, 1),
-			    filp->f_dentry->d_parent->d_inode->i_ino,
+			    ceph_translate_ino(inode->i_sb, ino),
 			    inode->i_mode >> 12) < 0)
 			return 0;
 		filp->f_pos = 2;
@@ -377,7 +379,8 @@ more:
 		if (filldir(dirent,
 			    rinfo->dir_dname[off - fi->offset],
 			    rinfo->dir_dname_len[off - fi->offset],
-			    pos, ino, ftype) < 0) {
+			    pos,
+			    ceph_translate_ino(inode->i_sb, ino), ftype) < 0) {
 			dout("filldir stopping us...\n");
 			return 0;
 		}
@@ -1024,14 +1027,13 @@ out_touch:
 }
 
 /*
- * When a dentry is released, clear the dir I_COMPLETE if it was part
- * of the current dir gen or if this is in the snapshot namespace.
+ * Release our ceph_dentry_info.
  */
-static void ceph_dentry_release(struct dentry *dentry)
+static void ceph_d_release(struct dentry *dentry)
 {
 	struct ceph_dentry_info *di = ceph_dentry(dentry);
 
-	dout("dentry_release %p\n", dentry);
+	dout("d_release %p\n", dentry);
 	if (di) {
 		ceph_dentry_lru_del(dentry);
 		if (di->lease_session)
@@ -1256,14 +1258,14 @@ const struct inode_operations ceph_dir_iops = {
 
 const struct dentry_operations ceph_dentry_ops = {
 	.d_revalidate = ceph_d_revalidate,
-	.d_release = ceph_dentry_release,
+	.d_release = ceph_d_release,
 };
 
 const struct dentry_operations ceph_snapdir_dentry_ops = {
 	.d_revalidate = ceph_snapdir_d_revalidate,
-	.d_release = ceph_dentry_release,
+	.d_release = ceph_d_release,
 };
 
 const struct dentry_operations ceph_snap_dentry_ops = {
-	.d_release = ceph_dentry_release,
+	.d_release = ceph_d_release,
 };
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 7d0e4a8..159b512 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -564,11 +564,19 @@ more:
 			 * start_request so that a tid has been assigned.
 			 */
 			spin_lock(&ci->i_unsafe_lock);
-			list_add(&req->r_unsafe_item, &ci->i_unsafe_writes);
+			list_add_tail(&req->r_unsafe_item,
+				      &ci->i_unsafe_writes);
 			spin_unlock(&ci->i_unsafe_lock);
 			ceph_get_cap_refs(ci, CEPH_CAP_FILE_WR);
 		}
+		
 		ret = ceph_osdc_wait_request(&fsc->client->osdc, req);
+		if (ret < 0 && req->r_safe_callback) {
+			spin_lock(&ci->i_unsafe_lock);
+			list_del_init(&req->r_unsafe_item);
+			spin_unlock(&ci->i_unsafe_lock);
+			ceph_put_cap_refs(ci, CEPH_CAP_FILE_WR);
+		}
 	}
 
 	if (file->f_flags & O_DIRECT)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 193bfa5..b54c97da 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -36,6 +36,13 @@ static void ceph_vmtruncate_work(struct work_struct *work);
 /*
  * find or create an inode, given the ceph ino number
  */
+static int ceph_set_ino_cb(struct inode *inode, void *data)
+{
+	ceph_inode(inode)->i_vino = *(struct ceph_vino *)data;
+	inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data);
+	return 0;
+}
+
 struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino)
 {
 	struct inode *inode;
@@ -1030,9 +1037,6 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
 			dout("fill_trace doing d_move %p -> %p\n",
 			     req->r_old_dentry, dn);
 
-			/* d_move screws up d_subdirs order */
-			ceph_i_clear(dir, CEPH_I_COMPLETE);
-
 			d_move(req->r_old_dentry, dn);
 			dout(" src %p '%.*s' dst %p '%.*s'\n",
 			     req->r_old_dentry,
@@ -1044,12 +1048,15 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
 			   rehashing bug in vfs_rename_dir */
 			ceph_invalidate_dentry_lease(dn);
 
-			/* take overwritten dentry's readdir offset */
-			dout("dn %p gets %p offset %lld (old offset %lld)\n",
-			     req->r_old_dentry, dn, ceph_dentry(dn)->offset,
+			/*
+			 * d_move() puts the renamed dentry at the end of
+			 * d_subdirs.  We need to assign it an appropriate
+			 * directory offset so we can behave when holding
+			 * I_COMPLETE.
+			 */
+			ceph_set_dentry_offset(req->r_old_dentry);
+			dout("dn %p gets new offset %lld\n", req->r_old_dentry, 
 			     ceph_dentry(req->r_old_dentry)->offset);
-			ceph_dentry(req->r_old_dentry)->offset =
-				ceph_dentry(dn)->offset;
 
 			dn = req->r_old_dentry;  /* use old_dentry */
 			in = dn->d_inode;
@@ -1809,7 +1816,7 @@ int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry,
 	err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL);
 	if (!err) {
 		generic_fillattr(inode, stat);
-		stat->ino = inode->i_ino;
+		stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino);
 		if (ceph_snap(inode) != CEPH_NOSNAP)
 			stat->dev = ceph_snap(inode);
 		else
diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c
index f40b913..0aee66b 100644
--- a/fs/ceph/snap.c
+++ b/fs/ceph/snap.c
@@ -463,8 +463,8 @@ void ceph_queue_cap_snap(struct ceph_inode_info *ci)
 
 		dout("queue_cap_snap %p cap_snap %p queuing under %p\n", inode,
 		     capsnap, snapc);
-		igrab(inode);
-		
+		ihold(inode);
+
 		atomic_set(&capsnap->nref, 1);
 		capsnap->ci = ci;
 		INIT_LIST_HEAD(&capsnap->ci_item);
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 9c50854..a9e78b4 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -131,6 +131,7 @@ enum {
 	Opt_rbytes,
 	Opt_norbytes,
 	Opt_noasyncreaddir,
+	Opt_ino32,
 };
 
 static match_table_t fsopt_tokens = {
@@ -150,6 +151,7 @@ static match_table_t fsopt_tokens = {
 	{Opt_rbytes, "rbytes"},
 	{Opt_norbytes, "norbytes"},
 	{Opt_noasyncreaddir, "noasyncreaddir"},
+	{Opt_ino32, "ino32"},
 	{-1, NULL}
 };
 
@@ -225,6 +227,9 @@ static int parse_fsopt_token(char *c, void *private)
 	case Opt_noasyncreaddir:
 		fsopt->flags |= CEPH_MOUNT_OPT_NOASYNCREADDIR;
 		break;
+	case Opt_ino32:
+		fsopt->flags |= CEPH_MOUNT_OPT_INO32;
+		break;
 	default:
 		BUG_ON(token);
 	}
@@ -288,7 +293,7 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt,
         fsopt->sb_flags = flags;
         fsopt->flags = CEPH_MOUNT_OPT_DEFAULT;
 
-        fsopt->rsize = CEPH_MOUNT_RSIZE_DEFAULT;
+        fsopt->rsize = CEPH_RSIZE_DEFAULT;
         fsopt->snapdir_name = kstrdup(CEPH_SNAPDIRNAME_DEFAULT, GFP_KERNEL);
 	fsopt->caps_wanted_delay_min = CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT;
 	fsopt->caps_wanted_delay_max = CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT;
@@ -370,7 +375,7 @@ static int ceph_show_options(struct seq_file *m, struct vfsmount *mnt)
 
 	if (fsopt->wsize)
 		seq_printf(m, ",wsize=%d", fsopt->wsize);
-	if (fsopt->rsize != CEPH_MOUNT_RSIZE_DEFAULT)
+	if (fsopt->rsize != CEPH_RSIZE_DEFAULT)
 		seq_printf(m, ",rsize=%d", fsopt->rsize);
 	if (fsopt->congestion_kb != default_congestion_kb())
 		seq_printf(m, ",write_congestion_kb=%d", fsopt->congestion_kb);
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 20b907d..619fe71 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -27,6 +27,7 @@
 #define CEPH_MOUNT_OPT_DIRSTAT         (1<<4) /* `cat dirname` for stats */
 #define CEPH_MOUNT_OPT_RBYTES          (1<<5) /* dir st_bytes = rbytes */
 #define CEPH_MOUNT_OPT_NOASYNCREADDIR  (1<<7) /* no dcache readdir */
+#define CEPH_MOUNT_OPT_INO32           (1<<8) /* 32 bit inos */
 
 #define CEPH_MOUNT_OPT_DEFAULT    (CEPH_MOUNT_OPT_RBYTES)
 
@@ -35,6 +36,7 @@
 #define ceph_test_mount_opt(fsc, opt) \
 	(!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt))
 
+#define CEPH_RSIZE_DEFAULT             (512*1024) /* readahead */
 #define CEPH_MAX_READDIR_DEFAULT        1024
 #define CEPH_MAX_READDIR_BYTES_DEFAULT  (512*1024)
 #define CEPH_SNAPDIRNAME_DEFAULT        ".snap"
@@ -319,6 +321,16 @@ static inline struct ceph_inode_info *ceph_inode(struct inode *inode)
 	return container_of(inode, struct ceph_inode_info, vfs_inode);
 }
 
+static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode)
+{
+	return (struct ceph_fs_client *)inode->i_sb->s_fs_info;
+}
+
+static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb)
+{
+	return (struct ceph_fs_client *)sb->s_fs_info;
+}
+
 static inline struct ceph_vino ceph_vino(struct inode *inode)
 {
 	return ceph_inode(inode)->i_vino;
@@ -327,19 +339,49 @@ static inline struct ceph_vino ceph_vino(struct inode *inode)
 /*
  * ino_t is <64 bits on many architectures, blech.
  *
- * don't include snap in ino hash, at least for now.
+ *               i_ino (kernel inode)   st_ino (userspace)
+ * i386          32                     32
+ * x86_64+ino32  64                     32
+ * x86_64        64                     64
+ */
+static inline u32 ceph_ino_to_ino32(ino_t ino)
+{
+	ino ^= ino >> (sizeof(ino) * 8 - 32);
+	if (!ino)
+		ino = 1;
+	return ino;
+}
+
+/*
+ * kernel i_ino value
  */
 static inline ino_t ceph_vino_to_ino(struct ceph_vino vino)
 {
 	ino_t ino = (ino_t)vino.ino;  /* ^ (vino.snap << 20); */
 #if BITS_PER_LONG == 32
-	ino ^= vino.ino >> (sizeof(u64)-sizeof(ino_t)) * 8;
-	if (!ino)
-		ino = 1;
+	ino = ceph_ino_to_ino32(ino);
 #endif
 	return ino;
 }
 
+/*
+ * user-visible ino (stat, filldir)
+ */
+#if BITS_PER_LONG == 32
+static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
+{
+	return ino;
+}
+#else
+static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
+{
+	if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))
+		ino = ceph_ino_to_ino32(ino);
+	return ino;
+}
+#endif
+
+
 /* for printf-style formatting */
 #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap
 
@@ -428,13 +470,6 @@ static inline loff_t ceph_make_fpos(unsigned frag, unsigned off)
 	return ((loff_t)frag << 32) | (loff_t)off;
 }
 
-static inline int ceph_set_ino_cb(struct inode *inode, void *data)
-{
-	ceph_inode(inode)->i_vino = *(struct ceph_vino *)data;
-	inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data);
-	return 0;
-}
-
 /*
  * caps helpers
  */
@@ -503,15 +538,6 @@ extern void ceph_reservation_status(struct ceph_fs_client *client,
 				    int *total, int *avail, int *used,
 				    int *reserved, int *min);
 
-static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode)
-{
-	return (struct ceph_fs_client *)inode->i_sb->s_fs_info;
-}
-
-static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb)
-{
-	return (struct ceph_fs_client *)sb->s_fs_info;
-}
 
 
 /*
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index e964b1c..c27d2367 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1569,34 +1569,6 @@ int cifs_fsync(struct file *file, int datasync)
 	return rc;
 }
 
-/* static void cifs_sync_page(struct page *page)
-{
-	struct address_space *mapping;
-	struct inode *inode;
-	unsigned long index = page->index;
-	unsigned int rpages = 0;
-	int rc = 0;
-
-	cFYI(1, "sync page %p", page);
-	mapping = page->mapping;
-	if (!mapping)
-		return 0;
-	inode = mapping->host;
-	if (!inode)
-		return; */
-
-/*	fill in rpages then
-	result = cifs_pagein_inode(inode, index, rpages); */ /* BB finish */
-
-/*	cFYI(1, "rpages is %d for sync page of Index %ld", rpages, index);
-
-#if 0
-	if (rc < 0)
-		return rc;
-	return 0;
-#endif
-} */
-
 /*
  * As file closes, flush all cached write data for this inode checking
  * for write behind errors.
@@ -2510,7 +2482,6 @@ const struct address_space_operations cifs_addr_ops = {
 	.set_page_dirty = __set_page_dirty_nobuffers,
 	.releasepage = cifs_release_page,
 	.invalidatepage = cifs_invalidate_page,
-	/* .sync_page = cifs_sync_page, */
 	/* .direct_IO = */
 };
 
@@ -2528,6 +2499,5 @@ const struct address_space_operations cifs_addr_ops_smallbuf = {
 	.set_page_dirty = __set_page_dirty_nobuffers,
 	.releasepage = cifs_release_page,
 	.invalidatepage = cifs_invalidate_page,
-	/* .sync_page = cifs_sync_page, */
 	/* .direct_IO = */
 };
diff --git a/fs/coda/Makefile b/fs/coda/Makefile
index 6c22e61..1bab69a 100644
--- a/fs/coda/Makefile
+++ b/fs/coda/Makefile
@@ -9,4 +9,4 @@ coda-objs := psdev.o cache.o cnode.o inode.o dir.o file.o upcall.o \
 
 # If you want debugging output, please uncomment the following line.
 
-# EXTRA_CFLAGS += -DDEBUG -DDEBUG_SMB_MALLOC=1
+# ccflags-y := -DDEBUG -DDEBUG_SMB_MALLOC=1
diff --git a/fs/coda/sysctl.c b/fs/coda/sysctl.c
index c6405ce..af56ad5 100644
--- a/fs/coda/sysctl.c
+++ b/fs/coda/sysctl.c
@@ -13,7 +13,6 @@
 
 #ifdef CONFIG_SYSCTL
 static struct ctl_table_header *fs_table_header;
-#endif
 
 static ctl_table coda_table[] = {
 	{
@@ -40,7 +39,6 @@ static ctl_table coda_table[] = {
 	{}
 };
 
-#ifdef CONFIG_SYSCTL
 static ctl_table fs_table[] = {
 	{
 		.procname	= "coda",
@@ -49,22 +47,27 @@ static ctl_table fs_table[] = {
 	},
 	{}
 };
-#endif
 
 void coda_sysctl_init(void)
 {
-#ifdef CONFIG_SYSCTL
 	if ( !fs_table_header )
 		fs_table_header = register_sysctl_table(fs_table);
-#endif
 }
 
 void coda_sysctl_clean(void)
 {
-#ifdef CONFIG_SYSCTL
 	if ( fs_table_header ) {
 		unregister_sysctl_table(fs_table_header);
 		fs_table_header = NULL;
 	}
-#endif
 }
+
+#else
+void coda_sysctl_init(void)
+{
+}
+
+void coda_sysctl_clean(void)
+{
+}
+#endif
diff --git a/fs/compat.c b/fs/compat.c
index c6d31a3..72fe6cd 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1671,9 +1671,6 @@ int compat_set_fd_set(unsigned long nr, compat_ulong_t __user *ufdset,
  * Update: ERESTARTSYS breaks at least the xview clock binary, so
  * I'm trying ERESTARTNOHAND which restart only when you want to.
  */
-#define MAX_SELECT_SECONDS \
-	((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-
 int compat_core_sys_select(int n, compat_ulong_t __user *inp,
 	compat_ulong_t __user *outp, compat_ulong_t __user *exp,
 	struct timespec *end_time)
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index 1bb547c..2f27e57 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -479,6 +479,7 @@ int devpts_pty_new(struct inode *ptmx_inode, struct tty_struct *tty)
 	struct dentry *root = sb->s_root;
 	struct pts_fs_info *fsi = DEVPTS_SB(sb);
 	struct pts_mount_opts *opts = &fsi->mount_opts;
+	int ret = 0;
 	char s[12];
 
 	/* We're supposed to be given the slave end of a pty */
@@ -501,14 +502,17 @@ int devpts_pty_new(struct inode *ptmx_inode, struct tty_struct *tty)
 	mutex_lock(&root->d_inode->i_mutex);
 
 	dentry = d_alloc_name(root, s);
-	if (!IS_ERR(dentry)) {
+	if (dentry) {
 		d_add(dentry, inode);
 		fsnotify_create(root->d_inode, dentry);
+	} else {
+		iput(inode);
+		ret = -ENOMEM;
 	}
 
 	mutex_unlock(&root->d_inode->i_mutex);
 
-	return 0;
+	return ret;
 }
 
 struct tty_struct *devpts_get_tty(struct inode *pts_inode, int number)
@@ -544,17 +548,12 @@ void devpts_pty_kill(struct tty_struct *tty)
 	mutex_lock(&root->d_inode->i_mutex);
 
 	dentry = d_find_alias(inode);
-	if (IS_ERR(dentry))
-		goto out;
-
-	if (dentry) {
-		inode->i_nlink--;
-		d_delete(dentry);
-		dput(dentry);	/* d_alloc_name() in devpts_pty_new() */
-	}
 
+	inode->i_nlink--;
+	d_delete(dentry);
+	dput(dentry);	/* d_alloc_name() in devpts_pty_new() */
 	dput(dentry);		/* d_find_alias above */
-out:
+
 	mutex_unlock(&root->d_inode->i_mutex);
 }
 
diff --git a/fs/direct-io.c b/fs/direct-io.c
index dcb5577..ac5f164 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -1110,11 +1110,8 @@ direct_io_worker(int rw, struct kiocb *iocb, struct inode *inode,
 	    ((rw & READ) || (dio->result == dio->size)))
 		ret = -EIOCBQUEUED;
 
-	if (ret != -EIOCBQUEUED) {
-		/* All IO is now issued, send it on its way */
-		blk_run_address_space(inode->i_mapping);
+	if (ret != -EIOCBQUEUED)
 		dio_await_completion(dio);
-	}
 
 	/*
 	 * Sync will always be dropping the final ref and completing the
@@ -1176,7 +1173,7 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
 	struct dio *dio;
 
 	if (rw & WRITE)
-		rw = WRITE_ODIRECT_PLUG;
+		rw = WRITE_ODIRECT;
 
 	if (bdev)
 		bdev_blkbits = blksize_bits(bdev_logical_block_size(bdev));
diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index 2195c21..98b77c8 100644
--- a/fs/drop_caches.c
+++ b/fs/drop_caches.c
@@ -8,6 +8,7 @@
 #include <linux/writeback.h>
 #include <linux/sysctl.h>
 #include <linux/gfp.h>
+#include "internal.h"
 
 /* A global variable is a bit ugly, but it keeps the code simple */
 int sysctl_drop_caches;
@@ -16,20 +17,23 @@ static void drop_pagecache_sb(struct super_block *sb, void *unused)
 {
 	struct inode *inode, *toput_inode = NULL;
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode_sb_list_lock);
 	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
-		if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW))
-			continue;
-		if (inode->i_mapping->nrpages == 0)
+		spin_lock(&inode->i_lock);
+		if ((inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) ||
+		    (inode->i_mapping->nrpages == 0)) {
+			spin_unlock(&inode->i_lock);
 			continue;
+		}
 		__iget(inode);
-		spin_unlock(&inode_lock);
+		spin_unlock(&inode->i_lock);
+		spin_unlock(&inode_sb_list_lock);
 		invalidate_mapping_pages(inode->i_mapping, 0, -1);
 		iput(toput_inode);
 		toput_inode = inode;
-		spin_lock(&inode_lock);
+		spin_lock(&inode_sb_list_lock);
 	}
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode_sb_list_lock);
 	iput(toput_inode);
 }
 
@@ -45,7 +49,11 @@ static void drop_slab(void)
 int drop_caches_sysctl_handler(ctl_table *table, int write,
 	void __user *buffer, size_t *length, loff_t *ppos)
 {
-	proc_dointvec_minmax(table, write, buffer, length, ppos);
+	int ret;
+
+	ret = proc_dointvec_minmax(table, write, buffer, length, ppos);
+	if (ret)
+		return ret;
 	if (write) {
 		if (sysctl_drop_caches & 1)
 			iterate_supers(drop_pagecache_sb, NULL);
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index bfd8b68..d2a70a4 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -266,7 +266,6 @@ void ecryptfs_destroy_mount_crypt_stat(
 				 &mount_crypt_stat->global_auth_tok_list,
 				 mount_crypt_stat_list) {
 		list_del(&auth_tok->mount_crypt_stat_list);
-		mount_crypt_stat->num_global_auth_toks--;
 		if (auth_tok->global_auth_tok_key
 		    && !(auth_tok->flags & ECRYPTFS_AUTH_TOK_INVALID))
 			key_put(auth_tok->global_auth_tok_key);
@@ -1389,6 +1388,7 @@ int ecryptfs_write_metadata(struct dentry *ecryptfs_dentry)
 		rc = -ENOMEM;
 		goto out;
 	}
+	/* Zeroed page ensures the in-header unencrypted i_size is set to 0 */
 	rc = ecryptfs_write_headers_virt(virt, virt_len, &size, crypt_stat,
 					 ecryptfs_dentry);
 	if (unlikely(rc)) {
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index e007534..bd3cafd 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -233,7 +233,7 @@ ecryptfs_get_key_payload_data(struct key *key)
 
 struct ecryptfs_key_sig {
 	struct list_head crypt_stat_list;
-	char keysig[ECRYPTFS_SIG_SIZE_HEX];
+	char keysig[ECRYPTFS_SIG_SIZE_HEX + 1];
 };
 
 struct ecryptfs_filename {
@@ -257,19 +257,18 @@ struct ecryptfs_filename {
 struct ecryptfs_crypt_stat {
 #define ECRYPTFS_STRUCT_INITIALIZED   0x00000001
 #define ECRYPTFS_POLICY_APPLIED       0x00000002
-#define ECRYPTFS_NEW_FILE             0x00000004
-#define ECRYPTFS_ENCRYPTED            0x00000008
-#define ECRYPTFS_SECURITY_WARNING     0x00000010
-#define ECRYPTFS_ENABLE_HMAC          0x00000020
-#define ECRYPTFS_ENCRYPT_IV_PAGES     0x00000040
-#define ECRYPTFS_KEY_VALID            0x00000080
-#define ECRYPTFS_METADATA_IN_XATTR    0x00000100
-#define ECRYPTFS_VIEW_AS_ENCRYPTED    0x00000200
-#define ECRYPTFS_KEY_SET              0x00000400
-#define ECRYPTFS_ENCRYPT_FILENAMES    0x00000800
-#define ECRYPTFS_ENCFN_USE_MOUNT_FNEK 0x00001000
-#define ECRYPTFS_ENCFN_USE_FEK        0x00002000
-#define ECRYPTFS_UNLINK_SIGS	      0x00004000
+#define ECRYPTFS_ENCRYPTED            0x00000004
+#define ECRYPTFS_SECURITY_WARNING     0x00000008
+#define ECRYPTFS_ENABLE_HMAC          0x00000010
+#define ECRYPTFS_ENCRYPT_IV_PAGES     0x00000020
+#define ECRYPTFS_KEY_VALID            0x00000040
+#define ECRYPTFS_METADATA_IN_XATTR    0x00000080
+#define ECRYPTFS_VIEW_AS_ENCRYPTED    0x00000100
+#define ECRYPTFS_KEY_SET              0x00000200
+#define ECRYPTFS_ENCRYPT_FILENAMES    0x00000400
+#define ECRYPTFS_ENCFN_USE_MOUNT_FNEK 0x00000800
+#define ECRYPTFS_ENCFN_USE_FEK        0x00001000
+#define ECRYPTFS_UNLINK_SIGS          0x00002000
 	u32 flags;
 	unsigned int file_version;
 	size_t iv_bytes;
@@ -297,7 +296,6 @@ struct ecryptfs_inode_info {
 	struct inode vfs_inode;
 	struct inode *wii_inode;
 	struct file *lower_file;
-	struct mutex lower_file_mutex;
 	struct ecryptfs_crypt_stat crypt_stat;
 };
 
@@ -333,7 +331,6 @@ struct ecryptfs_global_auth_tok {
 	u32 flags;
 	struct list_head mount_crypt_stat_list;
 	struct key *global_auth_tok_key;
-	struct ecryptfs_auth_tok *global_auth_tok;
 	unsigned char sig[ECRYPTFS_SIG_SIZE_HEX + 1];
 };
 
@@ -380,7 +377,6 @@ struct ecryptfs_mount_crypt_stat {
 	u32 flags;
 	struct list_head global_auth_tok_list;
 	struct mutex global_auth_tok_list_mutex;
-	size_t num_global_auth_toks;
 	size_t global_default_cipher_key_size;
 	size_t global_default_fn_cipher_key_bytes;
 	unsigned char global_default_cipher_name[ECRYPTFS_MAX_CIPHER_NAME_SIZE
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index 7d1050e..cedc913 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -273,7 +273,14 @@ static int ecryptfs_release(struct inode *inode, struct file *file)
 static int
 ecryptfs_fsync(struct file *file, int datasync)
 {
-	return vfs_fsync(ecryptfs_file_to_lower(file), datasync);
+	int rc = 0;
+
+	rc = generic_file_fsync(file, datasync);
+	if (rc)
+		goto out;
+	rc = vfs_fsync(ecryptfs_file_to_lower(file), datasync);
+out:
+	return rc;
 }
 
 static int ecryptfs_fasync(int fd, struct file *file, int flag)
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index b592938..f99051b 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -143,26 +143,6 @@ out:
 }
 
 /**
- * grow_file
- * @ecryptfs_dentry: the eCryptfs dentry
- *
- * This is the code which will grow the file to its correct size.
- */
-static int grow_file(struct dentry *ecryptfs_dentry)
-{
-	struct inode *ecryptfs_inode = ecryptfs_dentry->d_inode;
-	char zero_virt[] = { 0x00 };
-	int rc = 0;
-
-	rc = ecryptfs_write(ecryptfs_inode, zero_virt, 0, 1);
-	i_size_write(ecryptfs_inode, 0);
-	rc = ecryptfs_write_inode_size_to_metadata(ecryptfs_inode);
-	ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat.flags |=
-		ECRYPTFS_NEW_FILE;
-	return rc;
-}
-
-/**
  * ecryptfs_initialize_file
  *
  * Cause the file to be changed from a basic empty file to an ecryptfs
@@ -181,7 +161,6 @@ static int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry)
 		crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
 		goto out;
 	}
-	crypt_stat->flags |= ECRYPTFS_NEW_FILE;
 	ecryptfs_printk(KERN_DEBUG, "Initializing crypto context\n");
 	rc = ecryptfs_new_file_context(ecryptfs_dentry);
 	if (rc) {
@@ -202,9 +181,6 @@ static int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry)
 		printk(KERN_ERR "Error writing headers; rc = [%d]\n", rc);
 		goto out;
 	}
-	rc = grow_file(ecryptfs_dentry);
-	if (rc)
-		printk(KERN_ERR "Error growing file; rc = [%d]\n", rc);
 out:
 	return rc;
 }
diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index c1436cf..03e609c 100644
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -65,6 +65,24 @@ static int process_request_key_err(long err_code)
 	return rc;
 }
 
+static int process_find_global_auth_tok_for_sig_err(int err_code)
+{
+	int rc = err_code;
+
+	switch (err_code) {
+	case -ENOENT:
+		ecryptfs_printk(KERN_WARNING, "Missing auth tok\n");
+		break;
+	case -EINVAL:
+		ecryptfs_printk(KERN_WARNING, "Invalid auth tok\n");
+		break;
+	default:
+		rc = process_request_key_err(err_code);
+		break;
+	}
+	return rc;
+}
+
 /**
  * ecryptfs_parse_packet_length
  * @data: Pointer to memory containing length at offset
@@ -403,27 +421,120 @@ out:
 	return rc;
 }
 
+/**
+ * ecryptfs_verify_version
+ * @version: The version number to confirm
+ *
+ * Returns zero on good version; non-zero otherwise
+ */
+static int ecryptfs_verify_version(u16 version)
+{
+	int rc = 0;
+	unsigned char major;
+	unsigned char minor;
+
+	major = ((version >> 8) & 0xFF);
+	minor = (version & 0xFF);
+	if (major != ECRYPTFS_VERSION_MAJOR) {
+		ecryptfs_printk(KERN_ERR, "Major version number mismatch. "
+				"Expected [%d]; got [%d]\n",
+				ECRYPTFS_VERSION_MAJOR, major);
+		rc = -EINVAL;
+		goto out;
+	}
+	if (minor != ECRYPTFS_VERSION_MINOR) {
+		ecryptfs_printk(KERN_ERR, "Minor version number mismatch. "
+				"Expected [%d]; got [%d]\n",
+				ECRYPTFS_VERSION_MINOR, minor);
+		rc = -EINVAL;
+		goto out;
+	}
+out:
+	return rc;
+}
+
+/**
+ * ecryptfs_verify_auth_tok_from_key
+ * @auth_tok_key: key containing the authentication token
+ * @auth_tok: authentication token
+ *
+ * Returns zero on valid auth tok; -EINVAL otherwise
+ */
+static int
+ecryptfs_verify_auth_tok_from_key(struct key *auth_tok_key,
+				  struct ecryptfs_auth_tok **auth_tok)
+{
+	int rc = 0;
+
+	(*auth_tok) = ecryptfs_get_key_payload_data(auth_tok_key);
+	if (ecryptfs_verify_version((*auth_tok)->version)) {
+		printk(KERN_ERR "Data structure version mismatch. Userspace "
+		       "tools must match eCryptfs kernel module with major "
+		       "version [%d] and minor version [%d]\n",
+		       ECRYPTFS_VERSION_MAJOR, ECRYPTFS_VERSION_MINOR);
+		rc = -EINVAL;
+		goto out;
+	}
+	if ((*auth_tok)->token_type != ECRYPTFS_PASSWORD
+	    && (*auth_tok)->token_type != ECRYPTFS_PRIVATE_KEY) {
+		printk(KERN_ERR "Invalid auth_tok structure "
+		       "returned from key query\n");
+		rc = -EINVAL;
+		goto out;
+	}
+out:
+	return rc;
+}
+
 static int
 ecryptfs_find_global_auth_tok_for_sig(
-	struct ecryptfs_global_auth_tok **global_auth_tok,
+	struct key **auth_tok_key,
+	struct ecryptfs_auth_tok **auth_tok,
 	struct ecryptfs_mount_crypt_stat *mount_crypt_stat, char *sig)
 {
 	struct ecryptfs_global_auth_tok *walker;
 	int rc = 0;
 
-	(*global_auth_tok) = NULL;
+	(*auth_tok_key) = NULL;
+	(*auth_tok) = NULL;
 	mutex_lock(&mount_crypt_stat->global_auth_tok_list_mutex);
 	list_for_each_entry(walker,
 			    &mount_crypt_stat->global_auth_tok_list,
 			    mount_crypt_stat_list) {
-		if (memcmp(walker->sig, sig, ECRYPTFS_SIG_SIZE_HEX) == 0) {
-			rc = key_validate(walker->global_auth_tok_key);
-			if (!rc)
-				(*global_auth_tok) = walker;
+		if (memcmp(walker->sig, sig, ECRYPTFS_SIG_SIZE_HEX))
+			continue;
+
+		if (walker->flags & ECRYPTFS_AUTH_TOK_INVALID) {
+			rc = -EINVAL;
 			goto out;
 		}
+
+		rc = key_validate(walker->global_auth_tok_key);
+		if (rc) {
+			if (rc == -EKEYEXPIRED)
+				goto out;
+			goto out_invalid_auth_tok;
+		}
+
+		down_write(&(walker->global_auth_tok_key->sem));
+		rc = ecryptfs_verify_auth_tok_from_key(
+				walker->global_auth_tok_key, auth_tok);
+		if (rc)
+			goto out_invalid_auth_tok_unlock;
+
+		(*auth_tok_key) = walker->global_auth_tok_key;
+		key_get(*auth_tok_key);
+		goto out;
 	}
-	rc = -EINVAL;
+	rc = -ENOENT;
+	goto out;
+out_invalid_auth_tok_unlock:
+	up_write(&(walker->global_auth_tok_key->sem));
+out_invalid_auth_tok:
+	printk(KERN_WARNING "Invalidating auth tok with sig = [%s]\n", sig);
+	walker->flags |= ECRYPTFS_AUTH_TOK_INVALID;
+	key_put(walker->global_auth_tok_key);
+	walker->global_auth_tok_key = NULL;
 out:
 	mutex_unlock(&mount_crypt_stat->global_auth_tok_list_mutex);
 	return rc;
@@ -451,14 +562,11 @@ ecryptfs_find_auth_tok_for_sig(
 	struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
 	char *sig)
 {
-	struct ecryptfs_global_auth_tok *global_auth_tok;
 	int rc = 0;
 
-	(*auth_tok_key) = NULL;
-	(*auth_tok) = NULL;
-	if (ecryptfs_find_global_auth_tok_for_sig(&global_auth_tok,
-						  mount_crypt_stat, sig)) {
-
+	rc = ecryptfs_find_global_auth_tok_for_sig(auth_tok_key, auth_tok,
+						   mount_crypt_stat, sig);
+	if (rc == -ENOENT) {
 		/* if the flag ECRYPTFS_GLOBAL_MOUNT_AUTH_TOK_ONLY is set in the
 		 * mount_crypt_stat structure, we prevent to use auth toks that
 		 * are not inserted through the ecryptfs_add_global_auth_tok
@@ -470,8 +578,7 @@ ecryptfs_find_auth_tok_for_sig(
 
 		rc = ecryptfs_keyring_auth_tok_for_sig(auth_tok_key, auth_tok,
 						       sig);
-	} else
-		(*auth_tok) = global_auth_tok->global_auth_tok;
+	}
 	return rc;
 }
 
@@ -531,6 +638,16 @@ ecryptfs_write_tag_70_packet(char *dest, size_t *remaining_bytes,
 	}
 	s->desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
 	(*packet_size) = 0;
+	rc = ecryptfs_find_auth_tok_for_sig(
+		&auth_tok_key,
+		&s->auth_tok, mount_crypt_stat,
+		mount_crypt_stat->global_default_fnek_sig);
+	if (rc) {
+		printk(KERN_ERR "%s: Error attempting to find auth tok for "
+		       "fnek sig [%s]; rc = [%d]\n", __func__,
+		       mount_crypt_stat->global_default_fnek_sig, rc);
+		goto out;
+	}
 	rc = ecryptfs_get_tfm_and_mutex_for_cipher_name(
 		&s->desc.tfm,
 		&s->tfm_mutex, mount_crypt_stat->global_default_fn_cipher_name);
@@ -616,16 +733,6 @@ ecryptfs_write_tag_70_packet(char *dest, size_t *remaining_bytes,
 		goto out_free_unlock;
 	}
 	dest[s->i++] = s->cipher_code;
-	rc = ecryptfs_find_auth_tok_for_sig(
-		&auth_tok_key,
-		&s->auth_tok, mount_crypt_stat,
-		mount_crypt_stat->global_default_fnek_sig);
-	if (rc) {
-		printk(KERN_ERR "%s: Error attempting to find auth tok for "
-		       "fnek sig [%s]; rc = [%d]\n", __func__,
-		       mount_crypt_stat->global_default_fnek_sig, rc);
-		goto out_free_unlock;
-	}
 	/* TODO: Support other key modules than passphrase for
 	 * filename encryption */
 	if (s->auth_tok->token_type != ECRYPTFS_PASSWORD) {
@@ -765,8 +872,10 @@ out_free_unlock:
 out_unlock:
 	mutex_unlock(s->tfm_mutex);
 out:
-	if (auth_tok_key)
+	if (auth_tok_key) {
+		up_write(&(auth_tok_key->sem));
 		key_put(auth_tok_key);
+	}
 	kfree(s);
 	return rc;
 }
@@ -879,6 +988,15 @@ ecryptfs_parse_tag_70_packet(char **filename, size_t *filename_size,
 		       __func__, s->cipher_code);
 		goto out;
 	}
+	rc = ecryptfs_find_auth_tok_for_sig(&auth_tok_key,
+					    &s->auth_tok, mount_crypt_stat,
+					    s->fnek_sig_hex);
+	if (rc) {
+		printk(KERN_ERR "%s: Error attempting to find auth tok for "
+		       "fnek sig [%s]; rc = [%d]\n", __func__, s->fnek_sig_hex,
+		       rc);
+		goto out;
+	}
 	rc = ecryptfs_get_tfm_and_mutex_for_cipher_name(&s->desc.tfm,
 							&s->tfm_mutex,
 							s->cipher_string);
@@ -925,15 +1043,6 @@ ecryptfs_parse_tag_70_packet(char **filename, size_t *filename_size,
 	 * >= ECRYPTFS_MAX_IV_BYTES. */
 	memset(s->iv, 0, ECRYPTFS_MAX_IV_BYTES);
 	s->desc.info = s->iv;
-	rc = ecryptfs_find_auth_tok_for_sig(&auth_tok_key,
-					    &s->auth_tok, mount_crypt_stat,
-					    s->fnek_sig_hex);
-	if (rc) {
-		printk(KERN_ERR "%s: Error attempting to find auth tok for "
-		       "fnek sig [%s]; rc = [%d]\n", __func__, s->fnek_sig_hex,
-		       rc);
-		goto out_free_unlock;
-	}
 	/* TODO: Support other key modules than passphrase for
 	 * filename encryption */
 	if (s->auth_tok->token_type != ECRYPTFS_PASSWORD) {
@@ -1002,8 +1111,10 @@ out:
 		(*filename_size) = 0;
 		(*filename) = NULL;
 	}
-	if (auth_tok_key)
+	if (auth_tok_key) {
+		up_write(&(auth_tok_key->sem));
 		key_put(auth_tok_key);
+	}
 	kfree(s);
 	return rc;
 }
@@ -1520,38 +1631,6 @@ out:
 	return rc;
 }
 
-/**
- * ecryptfs_verify_version
- * @version: The version number to confirm
- *
- * Returns zero on good version; non-zero otherwise
- */
-static int ecryptfs_verify_version(u16 version)
-{
-	int rc = 0;
-	unsigned char major;
-	unsigned char minor;
-
-	major = ((version >> 8) & 0xFF);
-	minor = (version & 0xFF);
-	if (major != ECRYPTFS_VERSION_MAJOR) {
-		ecryptfs_printk(KERN_ERR, "Major version number mismatch. "
-				"Expected [%d]; got [%d]\n",
-				ECRYPTFS_VERSION_MAJOR, major);
-		rc = -EINVAL;
-		goto out;
-	}
-	if (minor != ECRYPTFS_VERSION_MINOR) {
-		ecryptfs_printk(KERN_ERR, "Minor version number mismatch. "
-				"Expected [%d]; got [%d]\n",
-				ECRYPTFS_VERSION_MINOR, minor);
-		rc = -EINVAL;
-		goto out;
-	}
-out:
-	return rc;
-}
-
 int ecryptfs_keyring_auth_tok_for_sig(struct key **auth_tok_key,
 				      struct ecryptfs_auth_tok **auth_tok,
 				      char *sig)
@@ -1563,31 +1642,16 @@ int ecryptfs_keyring_auth_tok_for_sig(struct key **auth_tok_key,
 		printk(KERN_ERR "Could not find key with description: [%s]\n",
 		       sig);
 		rc = process_request_key_err(PTR_ERR(*auth_tok_key));
+		(*auth_tok_key) = NULL;
 		goto out;
 	}
-	(*auth_tok) = ecryptfs_get_key_payload_data(*auth_tok_key);
-	if (ecryptfs_verify_version((*auth_tok)->version)) {
-		printk(KERN_ERR
-		       "Data structure version mismatch. "
-		       "Userspace tools must match eCryptfs "
-		       "kernel module with major version [%d] "
-		       "and minor version [%d]\n",
-		       ECRYPTFS_VERSION_MAJOR,
-		       ECRYPTFS_VERSION_MINOR);
-		rc = -EINVAL;
-		goto out_release_key;
-	}
-	if ((*auth_tok)->token_type != ECRYPTFS_PASSWORD
-	    && (*auth_tok)->token_type != ECRYPTFS_PRIVATE_KEY) {
-		printk(KERN_ERR "Invalid auth_tok structure "
-		       "returned from key query\n");
-		rc = -EINVAL;
-		goto out_release_key;
-	}
-out_release_key:
+	down_write(&(*auth_tok_key)->sem);
+	rc = ecryptfs_verify_auth_tok_from_key(*auth_tok_key, auth_tok);
 	if (rc) {
+		up_write(&(*auth_tok_key)->sem);
 		key_put(*auth_tok_key);
 		(*auth_tok_key) = NULL;
+		goto out;
 	}
 out:
 	return rc;
@@ -1809,6 +1873,7 @@ int ecryptfs_parse_packet_set(struct ecryptfs_crypt_stat *crypt_stat,
 find_next_matching_auth_tok:
 	found_auth_tok = 0;
 	if (auth_tok_key) {
+		up_write(&(auth_tok_key->sem));
 		key_put(auth_tok_key);
 		auth_tok_key = NULL;
 	}
@@ -1895,8 +1960,10 @@ found_matching_auth_tok:
 out_wipe_list:
 	wipe_auth_tok_list(&auth_tok_list);
 out:
-	if (auth_tok_key)
+	if (auth_tok_key) {
+		up_write(&(auth_tok_key->sem));
 		key_put(auth_tok_key);
+	}
 	return rc;
 }
 
@@ -2324,7 +2391,7 @@ ecryptfs_generate_key_packet_set(char *dest_base,
 				 size_t max)
 {
 	struct ecryptfs_auth_tok *auth_tok;
-	struct ecryptfs_global_auth_tok *global_auth_tok;
+	struct key *auth_tok_key = NULL;
 	struct ecryptfs_mount_crypt_stat *mount_crypt_stat =
 		&ecryptfs_superblock_to_private(
 			ecryptfs_dentry->d_sb)->mount_crypt_stat;
@@ -2343,21 +2410,16 @@ ecryptfs_generate_key_packet_set(char *dest_base,
 	list_for_each_entry(key_sig, &crypt_stat->keysig_list,
 			    crypt_stat_list) {
 		memset(key_rec, 0, sizeof(*key_rec));
-		rc = ecryptfs_find_global_auth_tok_for_sig(&global_auth_tok,
+		rc = ecryptfs_find_global_auth_tok_for_sig(&auth_tok_key,
+							   &auth_tok,
 							   mount_crypt_stat,
 							   key_sig->keysig);
 		if (rc) {
-			printk(KERN_ERR "Error attempting to get the global "
-			       "auth_tok; rc = [%d]\n", rc);
+			printk(KERN_WARNING "Unable to retrieve auth tok with "
+			       "sig = [%s]\n", key_sig->keysig);
+			rc = process_find_global_auth_tok_for_sig_err(rc);
 			goto out_free;
 		}
-		if (global_auth_tok->flags & ECRYPTFS_AUTH_TOK_INVALID) {
-			printk(KERN_WARNING
-			       "Skipping invalid auth tok with sig = [%s]\n",
-			       global_auth_tok->sig);
-			continue;
-		}
-		auth_tok = global_auth_tok->global_auth_tok;
 		if (auth_tok->token_type == ECRYPTFS_PASSWORD) {
 			rc = write_tag_3_packet((dest_base + (*len)),
 						&max, auth_tok,
@@ -2395,6 +2457,9 @@ ecryptfs_generate_key_packet_set(char *dest_base,
 			rc = -EINVAL;
 			goto out_free;
 		}
+		up_write(&(auth_tok_key->sem));
+		key_put(auth_tok_key);
+		auth_tok_key = NULL;
 	}
 	if (likely(max > 0)) {
 		dest_base[(*len)] = 0x00;
@@ -2407,6 +2472,11 @@ out_free:
 out:
 	if (rc)
 		(*len) = 0;
+	if (auth_tok_key) {
+		up_write(&(auth_tok_key->sem));
+		key_put(auth_tok_key);
+	}
+
 	mutex_unlock(&crypt_stat->keysig_list_mutex);
 	return rc;
 }
@@ -2424,6 +2494,7 @@ int ecryptfs_add_keysig(struct ecryptfs_crypt_stat *crypt_stat, char *sig)
 		return -ENOMEM;
 	}
 	memcpy(new_key_sig->keysig, sig, ECRYPTFS_SIG_SIZE_HEX);
+	new_key_sig->keysig[ECRYPTFS_SIG_SIZE_HEX] = '\0';
 	/* Caller must hold keysig_list_mutex */
 	list_add(&new_key_sig->crypt_stat_list, &crypt_stat->keysig_list);
 
@@ -2453,7 +2524,6 @@ ecryptfs_add_global_auth_tok(struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
 	mutex_lock(&mount_crypt_stat->global_auth_tok_list_mutex);
 	list_add(&new_auth_tok->mount_crypt_stat_list,
 		 &mount_crypt_stat->global_auth_tok_list);
-	mount_crypt_stat->num_global_auth_toks++;
 	mutex_unlock(&mount_crypt_stat->global_auth_tok_list_mutex);
 out:
 	return rc;
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 758323a..c27c0ec 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -122,7 +122,6 @@ int ecryptfs_init_persistent_file(struct dentry *ecryptfs_dentry)
 		ecryptfs_inode_to_private(ecryptfs_dentry->d_inode);
 	int rc = 0;
 
-	mutex_lock(&inode_info->lower_file_mutex);
 	if (!inode_info->lower_file) {
 		struct dentry *lower_dentry;
 		struct vfsmount *lower_mnt =
@@ -138,7 +137,6 @@ int ecryptfs_init_persistent_file(struct dentry *ecryptfs_dentry)
 			inode_info->lower_file = NULL;
 		}
 	}
-	mutex_unlock(&inode_info->lower_file_mutex);
 	return rc;
 }
 
@@ -241,14 +239,14 @@ static int ecryptfs_init_global_auth_toks(
 	struct ecryptfs_mount_crypt_stat *mount_crypt_stat)
 {
 	struct ecryptfs_global_auth_tok *global_auth_tok;
+	struct ecryptfs_auth_tok *auth_tok;
 	int rc = 0;
 
 	list_for_each_entry(global_auth_tok,
 			    &mount_crypt_stat->global_auth_tok_list,
 			    mount_crypt_stat_list) {
 		rc = ecryptfs_keyring_auth_tok_for_sig(
-			&global_auth_tok->global_auth_tok_key,
-			&global_auth_tok->global_auth_tok,
+			&global_auth_tok->global_auth_tok_key, &auth_tok,
 			global_auth_tok->sig);
 		if (rc) {
 			printk(KERN_ERR "Could not find valid key in user "
@@ -256,8 +254,10 @@ static int ecryptfs_init_global_auth_toks(
 			       "option: [%s]\n", global_auth_tok->sig);
 			global_auth_tok->flags |= ECRYPTFS_AUTH_TOK_INVALID;
 			goto out;
-		} else
+		} else {
 			global_auth_tok->flags &= ~ECRYPTFS_AUTH_TOK_INVALID;
+			up_write(&(global_auth_tok->global_auth_tok_key)->sem);
+		}
 	}
 out:
 	return rc;
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index cc64fca..6a44148 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -62,6 +62,18 @@ static int ecryptfs_writepage(struct page *page, struct writeback_control *wbc)
 {
 	int rc;
 
+	/*
+	 * Refuse to write the page out if we are called from reclaim context
+	 * since our writepage() path may potentially allocate memory when
+	 * calling into the lower fs vfs_write() which may in turn invoke
+	 * us again.
+	 */
+	if (current->flags & PF_MEMALLOC) {
+		redirty_page_for_writepage(wbc, page);
+		rc = 0;
+		goto out;
+	}
+
 	rc = ecryptfs_encrypt_page(page);
 	if (rc) {
 		ecryptfs_printk(KERN_WARNING, "Error encrypting "
@@ -70,8 +82,8 @@ static int ecryptfs_writepage(struct page *page, struct writeback_control *wbc)
 		goto out;
 	}
 	SetPageUptodate(page);
-	unlock_page(page);
 out:
+	unlock_page(page);
 	return rc;
 }
 
@@ -193,11 +205,7 @@ static int ecryptfs_readpage(struct file *file, struct page *page)
 		&ecryptfs_inode_to_private(page->mapping->host)->crypt_stat;
 	int rc = 0;
 
-	if (!crypt_stat
-	    || !(crypt_stat->flags & ECRYPTFS_ENCRYPTED)
-	    || (crypt_stat->flags & ECRYPTFS_NEW_FILE)) {
-		ecryptfs_printk(KERN_DEBUG,
-				"Passing through unencrypted page\n");
+	if (!crypt_stat || !(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
 		rc = ecryptfs_read_lower_page_segment(page, page->index, 0,
 						      PAGE_CACHE_SIZE,
 						      page->mapping->host);
@@ -295,8 +303,7 @@ static int ecryptfs_write_begin(struct file *file,
 		struct ecryptfs_crypt_stat *crypt_stat =
 			&ecryptfs_inode_to_private(mapping->host)->crypt_stat;
 
-		if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)
-		    || (crypt_stat->flags & ECRYPTFS_NEW_FILE)) {
+		if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
 			rc = ecryptfs_read_lower_page_segment(
 				page, index, 0, PAGE_CACHE_SIZE, mapping->host);
 			if (rc) {
@@ -374,6 +381,11 @@ static int ecryptfs_write_begin(struct file *file,
 	    && (pos != 0))
 		zero_user(page, 0, PAGE_CACHE_SIZE);
 out:
+	if (unlikely(rc)) {
+		unlock_page(page);
+		page_cache_release(page);
+		*pagep = NULL;
+	}
 	return rc;
 }
 
@@ -486,13 +498,8 @@ static int ecryptfs_write_end(struct file *file,
 	struct ecryptfs_crypt_stat *crypt_stat =
 		&ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat;
 	int rc;
+	int need_unlock_page = 1;
 
-	if (crypt_stat->flags & ECRYPTFS_NEW_FILE) {
-		ecryptfs_printk(KERN_DEBUG, "ECRYPTFS_NEW_FILE flag set in "
-			"crypt_stat at memory location [%p]\n", crypt_stat);
-		crypt_stat->flags &= ~(ECRYPTFS_NEW_FILE);
-	} else
-		ecryptfs_printk(KERN_DEBUG, "Not a new file\n");
 	ecryptfs_printk(KERN_DEBUG, "Calling fill_zeros_to_end_of_page"
 			"(page w/ index = [0x%.16lx], to = [%d])\n", index, to);
 	if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
@@ -512,26 +519,26 @@ static int ecryptfs_write_end(struct file *file,
 			"zeros in page with index = [0x%.16lx]\n", index);
 		goto out;
 	}
-	rc = ecryptfs_encrypt_page(page);
-	if (rc) {
-		ecryptfs_printk(KERN_WARNING, "Error encrypting page (upper "
-				"index [0x%.16lx])\n", index);
-		goto out;
-	}
+	set_page_dirty(page);
+	unlock_page(page);
+	need_unlock_page = 0;
 	if (pos + copied > i_size_read(ecryptfs_inode)) {
 		i_size_write(ecryptfs_inode, pos + copied);
 		ecryptfs_printk(KERN_DEBUG, "Expanded file size to "
 			"[0x%.16llx]\n",
 			(unsigned long long)i_size_read(ecryptfs_inode));
+		balance_dirty_pages_ratelimited(mapping);
+		rc = ecryptfs_write_inode_size_to_metadata(ecryptfs_inode);
+		if (rc) {
+			printk(KERN_ERR "Error writing inode size to metadata; "
+			       "rc = [%d]\n", rc);
+			goto out;
+		}
 	}
-	rc = ecryptfs_write_inode_size_to_metadata(ecryptfs_inode);
-	if (rc)
-		printk(KERN_ERR "Error writing inode size to metadata; "
-		       "rc = [%d]\n", rc);
-	else
-		rc = copied;
+	rc = copied;
 out:
-	unlock_page(page);
+	if (need_unlock_page)
+		unlock_page(page);
 	page_cache_release(page);
 	return rc;
 }
diff --git a/fs/ecryptfs/read_write.c b/fs/ecryptfs/read_write.c
index db184ef..85d4309 100644
--- a/fs/ecryptfs/read_write.c
+++ b/fs/ecryptfs/read_write.c
@@ -44,15 +44,11 @@ int ecryptfs_write_lower(struct inode *ecryptfs_inode, char *data,
 	ssize_t rc;
 
 	inode_info = ecryptfs_inode_to_private(ecryptfs_inode);
-	mutex_lock(&inode_info->lower_file_mutex);
 	BUG_ON(!inode_info->lower_file);
-	inode_info->lower_file->f_pos = offset;
 	fs_save = get_fs();
 	set_fs(get_ds());
-	rc = vfs_write(inode_info->lower_file, data, size,
-		       &inode_info->lower_file->f_pos);
+	rc = vfs_write(inode_info->lower_file, data, size, &offset);
 	set_fs(fs_save);
-	mutex_unlock(&inode_info->lower_file_mutex);
 	mark_inode_dirty_sync(ecryptfs_inode);
 	return rc;
 }
@@ -234,15 +230,11 @@ int ecryptfs_read_lower(char *data, loff_t offset, size_t size,
 	mm_segment_t fs_save;
 	ssize_t rc;
 
-	mutex_lock(&inode_info->lower_file_mutex);
 	BUG_ON(!inode_info->lower_file);
-	inode_info->lower_file->f_pos = offset;
 	fs_save = get_fs();
 	set_fs(get_ds());
-	rc = vfs_read(inode_info->lower_file, data, size,
-		      &inode_info->lower_file->f_pos);
+	rc = vfs_read(inode_info->lower_file, data, size, &offset);
 	set_fs(fs_save);
-	mutex_unlock(&inode_info->lower_file_mutex);
 	return rc;
 }
 
diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c
index 3042fe1..bacc882 100644
--- a/fs/ecryptfs/super.c
+++ b/fs/ecryptfs/super.c
@@ -55,7 +55,6 @@ static struct inode *ecryptfs_alloc_inode(struct super_block *sb)
 	if (unlikely(!inode_info))
 		goto out;
 	ecryptfs_init_crypt_stat(&inode_info->crypt_stat);
-	mutex_init(&inode_info->lower_file_mutex);
 	inode_info->lower_file = NULL;
 	inode = &inode_info->vfs_inode;
 out:
@@ -198,7 +197,7 @@ static int ecryptfs_show_options(struct seq_file *m, struct vfsmount *mnt)
 const struct super_operations ecryptfs_sops = {
 	.alloc_inode = ecryptfs_alloc_inode,
 	.destroy_inode = ecryptfs_destroy_inode,
-	.drop_inode = generic_delete_inode,
+	.drop_inode = generic_drop_inode,
 	.statfs = ecryptfs_statfs,
 	.remount_fs = NULL,
 	.evict_inode = ecryptfs_evict_inode,
diff --git a/fs/efs/inode.c b/fs/efs/inode.c
index a8e7797..9c13412 100644
--- a/fs/efs/inode.c
+++ b/fs/efs/inode.c
@@ -23,7 +23,6 @@ static sector_t _efs_bmap(struct address_space *mapping, sector_t block)
 }
 static const struct address_space_operations efs_aops = {
 	.readpage = efs_readpage,
-	.sync_page = block_sync_page,
 	.bmap = _efs_bmap
 };
 
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index ff12f7a..ed38801 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -316,6 +316,19 @@ static void ep_nested_calls_init(struct nested_calls *ncalls)
 }
 
 /**
+ * ep_events_available - Checks if ready events might be available.
+ *
+ * @ep: Pointer to the eventpoll context.
+ *
+ * Returns: Returns a value different than zero if ready events are available,
+ *          or zero otherwise.
+ */
+static inline int ep_events_available(struct eventpoll *ep)
+{
+	return !list_empty(&ep->rdllist) || ep->ovflist != EP_UNACTIVE_PTR;
+}
+
+/**
  * ep_call_nested - Perform a bound (possibly) nested call, by checking
  *                  that the recursion limit is not exceeded, and that
  *                  the same nested call (by the meaning of same cookie) is
@@ -1135,12 +1148,29 @@ static inline struct timespec ep_set_mstimeout(long ms)
 	return timespec_add_safe(now, ts);
 }
 
+/**
+ * ep_poll - Retrieves ready events, and delivers them to the caller supplied
+ *           event buffer.
+ *
+ * @ep: Pointer to the eventpoll context.
+ * @events: Pointer to the userspace buffer where the ready events should be
+ *          stored.
+ * @maxevents: Size (in terms of number of events) of the caller event buffer.
+ * @timeout: Maximum timeout for the ready events fetch operation, in
+ *           milliseconds. If the @timeout is zero, the function will not block,
+ *           while if the @timeout is less than zero, the function will block
+ *           until at least one event has been retrieved (or an error
+ *           occurred).
+ *
+ * Returns: Returns the number of ready events which have been fetched, or an
+ *          error code, in case of error.
+ */
 static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events,
 		   int maxevents, long timeout)
 {
-	int res, eavail, timed_out = 0;
+	int res = 0, eavail, timed_out = 0;
 	unsigned long flags;
-	long slack;
+	long slack = 0;
 	wait_queue_t wait;
 	ktime_t expires, *to = NULL;
 
@@ -1151,14 +1181,19 @@ static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events,
 		to = &expires;
 		*to = timespec_to_ktime(end_time);
 	} else if (timeout == 0) {
+		/*
+		 * Avoid the unnecessary trip to the wait queue loop, if the
+		 * caller specified a non blocking operation.
+		 */
 		timed_out = 1;
+		spin_lock_irqsave(&ep->lock, flags);
+		goto check_events;
 	}
 
-retry:
+fetch_events:
 	spin_lock_irqsave(&ep->lock, flags);
 
-	res = 0;
-	if (list_empty(&ep->rdllist)) {
+	if (!ep_events_available(ep)) {
 		/*
 		 * We don't have any available event to return to the caller.
 		 * We need to sleep here, and we will be wake up by
@@ -1174,7 +1209,7 @@ retry:
 			 * to TASK_INTERRUPTIBLE before doing the checks.
 			 */
 			set_current_state(TASK_INTERRUPTIBLE);
-			if (!list_empty(&ep->rdllist) || timed_out)
+			if (ep_events_available(ep) || timed_out)
 				break;
 			if (signal_pending(current)) {
 				res = -EINTR;
@@ -1191,8 +1226,9 @@ retry:
 
 		set_current_state(TASK_RUNNING);
 	}
+check_events:
 	/* Is it worth to try to dig for events ? */
-	eavail = !list_empty(&ep->rdllist) || ep->ovflist != EP_UNACTIVE_PTR;
+	eavail = ep_events_available(ep);
 
 	spin_unlock_irqrestore(&ep->lock, flags);
 
@@ -1203,7 +1239,7 @@ retry:
 	 */
 	if (!res && eavail &&
 	    !(res = ep_send_events(ep, events, maxevents)) && !timed_out)
-		goto retry;
+		goto fetch_events;
 
 	return res;
 }
diff --git a/fs/exec.c b/fs/exec.c
index ba99e1a..5e62d26 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1875,7 +1875,7 @@ static void wait_for_dump_helpers(struct file *file)
 
 
 /*
- * uhm_pipe_setup
+ * umh_pipe_setup
  * helper function to customize the process used
  * to collect the core in userspace.  Specifically
  * it sets up a pipe and installs it as fd 0 (stdin)
diff --git a/fs/exofs/common.h b/fs/exofs/common.h
index f0d5203..5e74ad3 100644
--- a/fs/exofs/common.h
+++ b/fs/exofs/common.h
@@ -53,10 +53,14 @@
 #define EXOFS_ROOT_ID	0x10002	/* object ID for root directory */
 
 /* exofs Application specific page/attribute */
+/* Inode attrs */
 # define EXOFS_APAGE_FS_DATA	(OSD_APAGE_APP_DEFINED_FIRST + 3)
 # define EXOFS_ATTR_INODE_DATA	1
 # define EXOFS_ATTR_INODE_FILE_LAYOUT	2
 # define EXOFS_ATTR_INODE_DIR_LAYOUT	3
+/* Partition attrs */
+# define EXOFS_APAGE_SB_DATA	(0xF0000000U + 3)
+# define EXOFS_ATTR_SB_STATS	1
 
 /*
  * The maximum number of files we can have is limited by the size of the
@@ -86,8 +90,8 @@ enum {
  */
 enum {EXOFS_FSCB_VER = 1, EXOFS_DT_VER = 1};
 struct exofs_fscb {
-	__le64  s_nextid;	/* Highest object ID used */
-	__le64  s_numfiles;	/* Number of files on fs */
+	__le64  s_nextid;	/* Only used after mkfs */
+	__le64  s_numfiles;	/* Only used after mkfs */
 	__le32	s_version;	/* == EXOFS_FSCB_VER */
 	__le16  s_magic;	/* Magic signature */
 	__le16  s_newfs;	/* Non-zero if this is a new fs */
@@ -98,6 +102,16 @@ struct exofs_fscb {
 } __packed;
 
 /*
+ * This struct is set on the FS partition's attributes.
+ * [EXOFS_APAGE_SB_DATA, EXOFS_ATTR_SB_STATS] and is written together
+ * with the create command, to atomically persist the sb writeable information.
+ */
+struct exofs_sb_stats {
+	__le64  s_nextid;	/* Highest object ID used */
+	__le64  s_numfiles;	/* Number of files on fs */
+} __packed;
+
+/*
  * Describes the raid used in the FS. It is part of the device table.
  * This here is taken from the pNFS-objects definition. In exofs we
  * use one raid policy through-out the filesystem. (NOTE: the funny
diff --git a/fs/exofs/dir.c b/fs/exofs/dir.c
index dcc941d..d0941c6 100644
--- a/fs/exofs/dir.c
+++ b/fs/exofs/dir.c
@@ -124,7 +124,7 @@ out:
 
 Ebadsize:
 	EXOFS_ERR("ERROR [exofs_check_page]: "
-		"size of directory #%lu is not a multiple of chunk size",
+		"size of directory(0x%lx) is not a multiple of chunk size\n",
 		dir->i_ino
 	);
 	goto fail;
@@ -142,8 +142,8 @@ Espan:
 	goto bad_entry;
 bad_entry:
 	EXOFS_ERR(
-		"ERROR [exofs_check_page]: bad entry in directory #%lu: %s - "
-		"offset=%lu, inode=%llu, rec_len=%d, name_len=%d",
+		"ERROR [exofs_check_page]: bad entry in directory(0x%lx): %s - "
+		"offset=%lu, inode=0x%llu, rec_len=%d, name_len=%d\n",
 		dir->i_ino, error, (page->index<<PAGE_CACHE_SHIFT)+offs,
 		_LLU(le64_to_cpu(p->inode_no)),
 		rec_len, p->name_len);
@@ -151,8 +151,8 @@ bad_entry:
 Eend:
 	p = (struct exofs_dir_entry *)(kaddr + offs);
 	EXOFS_ERR("ERROR [exofs_check_page]: "
-		"entry in directory #%lu spans the page boundary"
-		"offset=%lu, inode=%llu",
+		"entry in directory(0x%lx) spans the page boundary"
+		"offset=%lu, inode=0x%llx\n",
 		dir->i_ino, (page->index<<PAGE_CACHE_SHIFT)+offs,
 		_LLU(le64_to_cpu(p->inode_no)));
 fail:
@@ -261,9 +261,8 @@ exofs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 		struct page *page = exofs_get_page(inode, n);
 
 		if (IS_ERR(page)) {
-			EXOFS_ERR("ERROR: "
-				   "bad page in #%lu",
-				   inode->i_ino);
+			EXOFS_ERR("ERROR: bad page in directory(0x%lx)\n",
+				  inode->i_ino);
 			filp->f_pos += PAGE_CACHE_SIZE - offset;
 			return PTR_ERR(page);
 		}
@@ -283,7 +282,8 @@ exofs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 		for (; (char *)de <= limit; de = exofs_next_entry(de)) {
 			if (de->rec_len == 0) {
 				EXOFS_ERR("ERROR: "
-					"zero-length directory entry");
+				     "zero-length entry in directory(0x%lx)\n",
+				     inode->i_ino);
 				exofs_put_page(page);
 				return -EIO;
 			}
@@ -342,9 +342,9 @@ struct exofs_dir_entry *exofs_find_entry(struct inode *dir,
 			kaddr += exofs_last_byte(dir, n) - reclen;
 			while ((char *) de <= kaddr) {
 				if (de->rec_len == 0) {
-					EXOFS_ERR(
-						"ERROR: exofs_find_entry: "
-						"zero-length directory entry");
+					EXOFS_ERR("ERROR: zero-length entry in "
+						  "directory(0x%lx)\n",
+						  dir->i_ino);
 					exofs_put_page(page);
 					goto out;
 				}
@@ -472,7 +472,8 @@ int exofs_add_link(struct dentry *dentry, struct inode *inode)
 			}
 			if (de->rec_len == 0) {
 				EXOFS_ERR("ERROR: exofs_add_link: "
-					"zero-length directory entry");
+				      "zero-length entry in directory(0x%lx)\n",
+				      inode->i_ino);
 				err = -EIO;
 				goto out_unlock;
 			}
@@ -491,7 +492,8 @@ int exofs_add_link(struct dentry *dentry, struct inode *inode)
 		exofs_put_page(page);
 	}
 
-	EXOFS_ERR("exofs_add_link: BAD dentry=%p or inode=%p", dentry, inode);
+	EXOFS_ERR("exofs_add_link: BAD dentry=%p or inode=0x%lx\n",
+		  dentry, inode->i_ino);
 	return -EINVAL;
 
 got_it:
@@ -542,7 +544,8 @@ int exofs_delete_entry(struct exofs_dir_entry *dir, struct page *page)
 	while (de < dir) {
 		if (de->rec_len == 0) {
 			EXOFS_ERR("ERROR: exofs_delete_entry:"
-				"zero-length directory entry");
+				  "zero-length entry in directory(0x%lx)\n",
+				  inode->i_ino);
 			err = -EIO;
 			goto out;
 		}
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h
index 2dc925f..c965806 100644
--- a/fs/exofs/exofs.h
+++ b/fs/exofs/exofs.h
@@ -77,7 +77,7 @@ struct exofs_layout {
  * our extension to the in-memory superblock
  */
 struct exofs_sb_info {
-	struct exofs_fscb s_fscb;		/* Written often, pre-allocate*/
+	struct exofs_sb_stats s_ess;		/* Written often, pre-allocate*/
 	int		s_timeout;		/* timeout for OSD operations */
 	uint64_t	s_nextid;		/* highest object ID used     */
 	uint32_t	s_numfiles;		/* number of files on fs      */
@@ -256,6 +256,8 @@ static inline int exofs_oi_read(struct exofs_i_info *oi,
 }
 
 /* inode.c               */
+unsigned exofs_max_io_pages(struct exofs_layout *layout,
+			    unsigned expected_pages);
 int exofs_setattr(struct dentry *, struct iattr *);
 int exofs_write_begin(struct file *file, struct address_space *mapping,
 		loff_t pos, unsigned len, unsigned flags,
@@ -279,7 +281,7 @@ int exofs_set_link(struct inode *, struct exofs_dir_entry *, struct page *,
 		    struct inode *);
 
 /* super.c               */
-int exofs_sync_fs(struct super_block *sb, int wait);
+int exofs_sbi_write_stats(struct exofs_sb_info *sbi);
 
 /*********************
  * operation vectors *
diff --git a/fs/exofs/file.c b/fs/exofs/file.c
index b905c79..45ca323 100644
--- a/fs/exofs/file.c
+++ b/fs/exofs/file.c
@@ -45,22 +45,8 @@ static int exofs_release_file(struct inode *inode, struct file *filp)
 static int exofs_file_fsync(struct file *filp, int datasync)
 {
 	int ret;
-	struct inode *inode = filp->f_mapping->host;
-	struct super_block *sb;
-
-	if (!(inode->i_state & I_DIRTY))
-		return 0;
-	if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
-		return 0;
-
-	ret = sync_inode_metadata(inode, 1);
-
-	/* This is a good place to write the sb */
-	/* TODO: Sechedule an sb-sync on create */
-	sb = inode->i_sb;
-	if (sb->s_dirt)
-		exofs_sync_fs(sb, 1);
 
+	ret = sync_inode_metadata(filp->f_mapping->host, 1);
 	return ret;
 }
 
diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
index a755523..8472c09 100644
--- a/fs/exofs/inode.c
+++ b/fs/exofs/inode.c
@@ -43,6 +43,17 @@ enum { BIO_MAX_PAGES_KMALLOC =
 		PAGE_SIZE / sizeof(struct page *),
 };
 
+unsigned exofs_max_io_pages(struct exofs_layout *layout,
+			    unsigned expected_pages)
+{
+	unsigned pages = min_t(unsigned, expected_pages, MAX_PAGES_KMALLOC);
+
+	/* TODO: easily support bio chaining */
+	pages =  min_t(unsigned, pages,
+		       layout->group_width * BIO_MAX_PAGES_KMALLOC);
+	return pages;
+}
+
 struct page_collect {
 	struct exofs_sb_info *sbi;
 	struct inode *inode;
@@ -97,8 +108,7 @@ static void _pcol_reset(struct page_collect *pcol)
 
 static int pcol_try_alloc(struct page_collect *pcol)
 {
-	unsigned pages = min_t(unsigned, pcol->expected_pages,
-			  MAX_PAGES_KMALLOC);
+	unsigned pages;
 
 	if (!pcol->ios) { /* First time allocate io_state */
 		int ret = exofs_get_io_state(&pcol->sbi->layout, &pcol->ios);
@@ -108,8 +118,7 @@ static int pcol_try_alloc(struct page_collect *pcol)
 	}
 
 	/* TODO: easily support bio chaining */
-	pages =  min_t(unsigned, pages,
-		       pcol->sbi->layout.group_width * BIO_MAX_PAGES_KMALLOC);
+	pages =  exofs_max_io_pages(&pcol->sbi->layout, pcol->expected_pages);
 
 	for (; pages; pages >>= 1) {
 		pcol->pages = kmalloc(pages * sizeof(struct page *),
@@ -350,8 +359,10 @@ static int readpage_strip(void *data, struct page *page)
 
 		if (!pcol->read_4_write)
 			unlock_page(page);
-		EXOFS_DBGMSG("readpage_strip(0x%lx, 0x%lx) empty page,"
-			     " splitting\n", inode->i_ino, page->index);
+		EXOFS_DBGMSG("readpage_strip(0x%lx) empty page len=%zx "
+			     "read_4_write=%d index=0x%lx end_index=0x%lx "
+			     "splitting\n", inode->i_ino, len,
+			     pcol->read_4_write, page->index, end_index);
 
 		return read_exec(pcol);
 	}
@@ -722,11 +733,28 @@ int exofs_write_begin(struct file *file, struct address_space *mapping,
 
 	 /* read modify write */
 	if (!PageUptodate(page) && (len != PAGE_CACHE_SIZE)) {
+		loff_t i_size = i_size_read(mapping->host);
+		pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT;
+		size_t rlen;
+
+		if (page->index < end_index)
+			rlen = PAGE_CACHE_SIZE;
+		else if (page->index == end_index)
+			rlen = i_size & ~PAGE_CACHE_MASK;
+		else
+			rlen = 0;
+
+		if (!rlen) {
+			clear_highpage(page);
+			SetPageUptodate(page);
+			goto out;
+		}
+
 		ret = _readpage(page, true);
 		if (ret) {
 			/*SetPageError was done by _readpage. Is it ok?*/
 			unlock_page(page);
-			EXOFS_DBGMSG("__readpage_filler failed\n");
+			EXOFS_DBGMSG("__readpage failed\n");
 		}
 	}
 out:
@@ -795,7 +823,6 @@ const struct address_space_operations exofs_aops = {
 	.direct_IO	= NULL, /* TODO: Should be trivial to do */
 
 	/* With these NULL has special meaning or default is not exported */
-	.sync_page	= NULL,
 	.get_xip_mem	= NULL,
 	.migratepage	= NULL,
 	.launder_page	= NULL,
@@ -1030,6 +1057,7 @@ struct inode *exofs_iget(struct super_block *sb, unsigned long ino)
 		memcpy(oi->i_data, fcb.i_data, sizeof(fcb.i_data));
 	}
 
+	inode->i_mapping->backing_dev_info = sb->s_bdi;
 	if (S_ISREG(inode->i_mode)) {
 		inode->i_op = &exofs_file_inode_operations;
 		inode->i_fop = &exofs_file_operations;
@@ -1073,6 +1101,7 @@ int __exofs_wait_obj_created(struct exofs_i_info *oi)
 	}
 	return unlikely(is_bad_inode(&oi->vfs_inode)) ? -EIO : 0;
 }
+
 /*
  * Callback function from exofs_new_inode().  The important thing is that we
  * set the obj_created flag so that other methods know that the object exists on
@@ -1130,7 +1159,7 @@ struct inode *exofs_new_inode(struct inode *dir, int mode)
 
 	sbi = sb->s_fs_info;
 
-	sb->s_dirt = 1;
+	inode->i_mapping->backing_dev_info = sb->s_bdi;
 	inode_init_owner(inode, dir, mode);
 	inode->i_ino = sbi->s_nextid++;
 	inode->i_blkbits = EXOFS_BLKSHIFT;
@@ -1141,6 +1170,8 @@ struct inode *exofs_new_inode(struct inode *dir, int mode)
 	spin_unlock(&sbi->s_next_gen_lock);
 	insert_inode_hash(inode);
 
+	exofs_sbi_write_stats(sbi); /* Make sure new sbi->s_nextid is on disk */
+
 	mark_inode_dirty(inode);
 
 	ret = exofs_get_io_state(&sbi->layout, &ios);
@@ -1271,7 +1302,8 @@ out:
 
 int exofs_write_inode(struct inode *inode, struct writeback_control *wbc)
 {
-	return exofs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
+	/* FIXME: fix fsync and use wbc->sync_mode == WB_SYNC_ALL */
+	return exofs_update_inode(inode, 1);
 }
 
 /*
diff --git a/fs/exofs/super.c b/fs/exofs/super.c
index 8c6c466..06065bd 100644
--- a/fs/exofs/super.c
+++ b/fs/exofs/super.c
@@ -48,6 +48,7 @@
  * struct to hold what we get from mount options
  */
 struct exofs_mountopt {
+	bool is_osdname;
 	const char *dev_name;
 	uint64_t pid;
 	int timeout;
@@ -56,7 +57,7 @@ struct exofs_mountopt {
 /*
  * exofs-specific mount-time options.
  */
-enum { Opt_pid, Opt_to, Opt_mkfs, Opt_format, Opt_err };
+enum { Opt_name, Opt_pid, Opt_to, Opt_err };
 
 /*
  * Our mount-time options.  These should ideally be 64-bit unsigned, but the
@@ -64,6 +65,7 @@ enum { Opt_pid, Opt_to, Opt_mkfs, Opt_format, Opt_err };
  * sufficient for most applications now.
  */
 static match_table_t tokens = {
+	{Opt_name, "osdname=%s"},
 	{Opt_pid, "pid=%u"},
 	{Opt_to, "to=%u"},
 	{Opt_err, NULL}
@@ -94,6 +96,14 @@ static int parse_options(char *options, struct exofs_mountopt *opts)
 
 		token = match_token(p, tokens, args);
 		switch (token) {
+		case Opt_name:
+			opts->dev_name = match_strdup(&args[0]);
+			if (unlikely(!opts->dev_name)) {
+				EXOFS_ERR("Error allocating dev_name");
+				return -ENOMEM;
+			}
+			opts->is_osdname = true;
+			break;
 		case Opt_pid:
 			if (0 == match_strlcpy(str, &args[0], sizeof(str)))
 				return -EINVAL;
@@ -203,6 +213,101 @@ static void destroy_inodecache(void)
 static const struct super_operations exofs_sops;
 static const struct export_operations exofs_export_ops;
 
+static const struct osd_attr g_attr_sb_stats = ATTR_DEF(
+	EXOFS_APAGE_SB_DATA,
+	EXOFS_ATTR_SB_STATS,
+	sizeof(struct exofs_sb_stats));
+
+static int __sbi_read_stats(struct exofs_sb_info *sbi)
+{
+	struct osd_attr attrs[] = {
+		[0] = g_attr_sb_stats,
+	};
+	struct exofs_io_state *ios;
+	int ret;
+
+	ret = exofs_get_io_state(&sbi->layout, &ios);
+	if (unlikely(ret)) {
+		EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
+		return ret;
+	}
+
+	ios->cred = sbi->s_cred;
+
+	ios->in_attr = attrs;
+	ios->in_attr_len = ARRAY_SIZE(attrs);
+
+	ret = exofs_sbi_read(ios);
+	if (unlikely(ret)) {
+		EXOFS_ERR("Error reading super_block stats => %d\n", ret);
+		goto out;
+	}
+
+	ret = extract_attr_from_ios(ios, &attrs[0]);
+	if (ret) {
+		EXOFS_ERR("%s: extract_attr of sb_stats failed\n", __func__);
+		goto out;
+	}
+	if (attrs[0].len) {
+		struct exofs_sb_stats *ess;
+
+		if (unlikely(attrs[0].len != sizeof(*ess))) {
+			EXOFS_ERR("%s: Wrong version of exofs_sb_stats "
+				  "size(%d) != expected(%zd)\n",
+				  __func__, attrs[0].len, sizeof(*ess));
+			goto out;
+		}
+
+		ess = attrs[0].val_ptr;
+		sbi->s_nextid = le64_to_cpu(ess->s_nextid);
+		sbi->s_numfiles = le32_to_cpu(ess->s_numfiles);
+	}
+
+out:
+	exofs_put_io_state(ios);
+	return ret;
+}
+
+static void stats_done(struct exofs_io_state *ios, void *p)
+{
+	exofs_put_io_state(ios);
+	/* Good thanks nothing to do anymore */
+}
+
+/* Asynchronously write the stats attribute */
+int exofs_sbi_write_stats(struct exofs_sb_info *sbi)
+{
+	struct osd_attr attrs[] = {
+		[0] = g_attr_sb_stats,
+	};
+	struct exofs_io_state *ios;
+	int ret;
+
+	ret = exofs_get_io_state(&sbi->layout, &ios);
+	if (unlikely(ret)) {
+		EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
+		return ret;
+	}
+
+	sbi->s_ess.s_nextid   = cpu_to_le64(sbi->s_nextid);
+	sbi->s_ess.s_numfiles = cpu_to_le64(sbi->s_numfiles);
+	attrs[0].val_ptr = &sbi->s_ess;
+
+	ios->cred = sbi->s_cred;
+	ios->done = stats_done;
+	ios->private = sbi;
+	ios->out_attr = attrs;
+	ios->out_attr_len = ARRAY_SIZE(attrs);
+
+	ret = exofs_sbi_write(ios);
+	if (unlikely(ret)) {
+		EXOFS_ERR("%s: exofs_sbi_write failed.\n", __func__);
+		exofs_put_io_state(ios);
+	}
+
+	return ret;
+}
+
 /*
  * Write the superblock to the OSD
  */
@@ -213,18 +318,25 @@ int exofs_sync_fs(struct super_block *sb, int wait)
 	struct exofs_io_state *ios;
 	int ret = -ENOMEM;
 
-	lock_super(sb);
+	fscb = kmalloc(sizeof(*fscb), GFP_KERNEL);
+	if (unlikely(!fscb))
+		return -ENOMEM;
+
 	sbi = sb->s_fs_info;
-	fscb = &sbi->s_fscb;
 
+	/* NOTE: We no longer dirty the super_block anywhere in exofs. The
+	 * reason we write the fscb here on unmount is so we can stay backwards
+	 * compatible with fscb->s_version == 1. (What we are not compatible
+	 * with is if a new version FS crashed and then we try to mount an old
+	 * version). Otherwise the exofs_fscb is read-only from mkfs time. All
+	 * the writeable info is set in exofs_sbi_write_stats() above.
+	 */
 	ret = exofs_get_io_state(&sbi->layout, &ios);
-	if (ret)
+	if (unlikely(ret))
 		goto out;
 
-	/* Note: We only write the changing part of the fscb. .i.e upto the
-	 *       the fscb->s_dev_table_oid member. There is no read-modify-write
-	 *       here.
-	 */
+	lock_super(sb);
+
 	ios->length = offsetof(struct exofs_fscb, s_dev_table_oid);
 	memset(fscb, 0, ios->length);
 	fscb->s_nextid = cpu_to_le64(sbi->s_nextid);
@@ -239,16 +351,17 @@ int exofs_sync_fs(struct super_block *sb, int wait)
 	ios->cred = sbi->s_cred;
 
 	ret = exofs_sbi_write(ios);
-	if (unlikely(ret)) {
+	if (unlikely(ret))
 		EXOFS_ERR("%s: exofs_sbi_write failed.\n", __func__);
-		goto out;
-	}
-	sb->s_dirt = 0;
+	else
+		sb->s_dirt = 0;
+
 
+	unlock_super(sb);
 out:
 	EXOFS_DBGMSG("s_nextid=0x%llx ret=%d\n", _LLU(sbi->s_nextid), ret);
 	exofs_put_io_state(ios);
-	unlock_super(sb);
+	kfree(fscb);
 	return ret;
 }
 
@@ -292,13 +405,14 @@ static void exofs_put_super(struct super_block *sb)
 	int num_pend;
 	struct exofs_sb_info *sbi = sb->s_fs_info;
 
-	if (sb->s_dirt)
-		exofs_write_super(sb);
-
 	/* make sure there are no pending commands */
 	for (num_pend = atomic_read(&sbi->s_curr_pending); num_pend > 0;
 	     num_pend = atomic_read(&sbi->s_curr_pending)) {
 		wait_queue_head_t wq;
+
+		printk(KERN_NOTICE "%s: !!Pending operations in flight. "
+		       "This is a BUG. please report to osd-dev@open-osd.org\n",
+		       __func__);
 		init_waitqueue_head(&wq);
 		wait_event_timeout(wq,
 				  (atomic_read(&sbi->s_curr_pending) == 0),
@@ -390,6 +504,23 @@ static int _read_and_match_data_map(struct exofs_sb_info *sbi, unsigned numdevs,
 	return 0;
 }
 
+static unsigned __ra_pages(struct exofs_layout *layout)
+{
+	const unsigned _MIN_RA = 32; /* min 128K read-ahead */
+	unsigned ra_pages = layout->group_width * layout->stripe_unit /
+				PAGE_SIZE;
+	unsigned max_io_pages = exofs_max_io_pages(layout, ~0);
+
+	ra_pages *= 2; /* two stripes */
+	if (ra_pages < _MIN_RA)
+		ra_pages = roundup(_MIN_RA, ra_pages / 2);
+
+	if (ra_pages > max_io_pages)
+		ra_pages = max_io_pages;
+
+	return ra_pages;
+}
+
 /* @odi is valid only as long as @fscb_dev is valid */
 static int exofs_devs_2_odi(struct exofs_dt_device_info *dt_dev,
 			     struct osd_dev_info *odi)
@@ -495,7 +626,7 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
 		}
 
 		od = osduld_info_lookup(&odi);
-		if (unlikely(IS_ERR(od))) {
+		if (IS_ERR(od)) {
 			ret = PTR_ERR(od);
 			EXOFS_ERR("ERROR: device requested is not found "
 				  "osd_name-%s =>%d\n", odi.osdname, ret);
@@ -558,9 +689,17 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
 		goto free_bdi;
 
 	/* use mount options to fill superblock */
-	od = osduld_path_lookup(opts->dev_name);
+	if (opts->is_osdname) {
+		struct osd_dev_info odi = {.systemid_len = 0};
+
+		odi.osdname_len = strlen(opts->dev_name);
+		odi.osdname = (u8 *)opts->dev_name;
+		od = osduld_info_lookup(&odi);
+	} else {
+		od = osduld_path_lookup(opts->dev_name);
+	}
 	if (IS_ERR(od)) {
-		ret = PTR_ERR(od);
+		ret = -EINVAL;
 		goto free_sbi;
 	}
 
@@ -594,6 +733,7 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
 		goto free_sbi;
 
 	sb->s_magic = le16_to_cpu(fscb.s_magic);
+	/* NOTE: we read below to be backward compatible with old versions */
 	sbi->s_nextid = le64_to_cpu(fscb.s_nextid);
 	sbi->s_numfiles = le32_to_cpu(fscb.s_numfiles);
 
@@ -604,7 +744,7 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
 		ret = -EINVAL;
 		goto free_sbi;
 	}
-	if (le32_to_cpu(fscb.s_version) != EXOFS_FSCB_VER) {
+	if (le32_to_cpu(fscb.s_version) > EXOFS_FSCB_VER) {
 		EXOFS_ERR("ERROR: Bad FSCB version expected-%d got-%d\n",
 			  EXOFS_FSCB_VER, le32_to_cpu(fscb.s_version));
 		ret = -EINVAL;
@@ -622,7 +762,10 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
 			goto free_sbi;
 	}
 
+	__sbi_read_stats(sbi);
+
 	/* set up operation vectors */
+	sbi->bdi.ra_pages = __ra_pages(&sbi->layout);
 	sb->s_bdi = &sbi->bdi;
 	sb->s_fs_info = sbi;
 	sb->s_op = &exofs_sops;
@@ -652,6 +795,8 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
 
 	_exofs_print_device("Mounting", opts->dev_name, sbi->layout.s_ods[0],
 			    sbi->layout.s_pid);
+	if (opts->is_osdname)
+		kfree(opts->dev_name);
 	return 0;
 
 free_sbi:
@@ -660,6 +805,8 @@ free_bdi:
 	EXOFS_ERR("Unable to mount exofs on %s pid=0x%llx err=%d\n",
 		  opts->dev_name, sbi->layout.s_pid, ret);
 	exofs_free_sbi(sbi);
+	if (opts->is_osdname)
+		kfree(opts->dev_name);
 	return ret;
 }
 
@@ -677,7 +824,8 @@ static struct dentry *exofs_mount(struct file_system_type *type,
 	if (ret)
 		return ERR_PTR(ret);
 
-	opts.dev_name = dev_name;
+	if (!opts.dev_name)
+		opts.dev_name = dev_name;
 	return mount_nodev(type, flags, &opts, exofs_fill_super);
 }
 
diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c
index 7b41805..abea5a1 100644
--- a/fs/ext2/acl.c
+++ b/fs/ext2/acl.c
@@ -406,7 +406,7 @@ ext2_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
 		return -EINVAL;
 	if (!test_opt(dentry->d_sb, POSIX_ACL))
 		return -EOPNOTSUPP;
-	if (!is_owner_or_cap(dentry->d_inode))
+	if (!inode_owner_or_capable(dentry->d_inode))
 		return -EPERM;
 
 	if (value) {
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index 1b48c33..645be9e 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -174,3 +174,9 @@ ext2_group_first_block_no(struct super_block *sb, unsigned long group_no)
 	return group_no * (ext2_fsblk_t)EXT2_BLOCKS_PER_GROUP(sb) +
 		le32_to_cpu(EXT2_SB(sb)->s_es->s_first_data_block);
 }
+
+#define ext2_set_bit	__test_and_set_bit_le
+#define ext2_clear_bit	__test_and_clear_bit_le
+#define ext2_test_bit	test_bit_le
+#define ext2_find_first_zero_bit	find_first_zero_bit_le
+#define ext2_find_next_zero_bit		find_next_zero_bit_le
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 40ad210..c47f706 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -860,7 +860,6 @@ const struct address_space_operations ext2_aops = {
 	.readpage		= ext2_readpage,
 	.readpages		= ext2_readpages,
 	.writepage		= ext2_writepage,
-	.sync_page		= block_sync_page,
 	.write_begin		= ext2_write_begin,
 	.write_end		= ext2_write_end,
 	.bmap			= ext2_bmap,
@@ -880,7 +879,6 @@ const struct address_space_operations ext2_nobh_aops = {
 	.readpage		= ext2_readpage,
 	.readpages		= ext2_readpages,
 	.writepage		= ext2_nobh_writepage,
-	.sync_page		= block_sync_page,
 	.write_begin		= ext2_nobh_write_begin,
 	.write_end		= nobh_write_end,
 	.bmap			= ext2_bmap,
diff --git a/fs/ext2/ioctl.c b/fs/ext2/ioctl.c
index e743130..f81e250 100644
--- a/fs/ext2/ioctl.c
+++ b/fs/ext2/ioctl.c
@@ -39,7 +39,7 @@ long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		if (ret)
 			return ret;
 
-		if (!is_owner_or_cap(inode)) {
+		if (!inode_owner_or_capable(inode)) {
 			ret = -EACCES;
 			goto setflags_out;
 		}
@@ -89,7 +89,7 @@ setflags_out:
 	case EXT2_IOC_GETVERSION:
 		return put_user(inode->i_generation, (int __user *) arg);
 	case EXT2_IOC_SETVERSION:
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EPERM;
 		ret = mnt_want_write(filp->f_path.mnt);
 		if (ret)
@@ -115,7 +115,7 @@ setflags_out:
 		if (!test_opt(inode->i_sb, RESERVATION) ||!S_ISREG(inode->i_mode))
 			return -ENOTTY;
 
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EACCES;
 
 		if (get_user(rsv_window_size, (int __user *)arg))
diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c
index e4fa49e..9d021c0 100644
--- a/fs/ext3/acl.c
+++ b/fs/ext3/acl.c
@@ -435,7 +435,7 @@ ext3_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
 		return -EINVAL;
 	if (!test_opt(inode->i_sb, POSIX_ACL))
 		return -EOPNOTSUPP;
-	if (!is_owner_or_cap(inode))
+	if (!inode_owner_or_capable(inode))
 		return -EPERM;
 
 	if (value) {
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index ae94f6d..fe2541d 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -1894,7 +1894,6 @@ static const struct address_space_operations ext3_ordered_aops = {
 	.readpage		= ext3_readpage,
 	.readpages		= ext3_readpages,
 	.writepage		= ext3_ordered_writepage,
-	.sync_page		= block_sync_page,
 	.write_begin		= ext3_write_begin,
 	.write_end		= ext3_ordered_write_end,
 	.bmap			= ext3_bmap,
@@ -1910,7 +1909,6 @@ static const struct address_space_operations ext3_writeback_aops = {
 	.readpage		= ext3_readpage,
 	.readpages		= ext3_readpages,
 	.writepage		= ext3_writeback_writepage,
-	.sync_page		= block_sync_page,
 	.write_begin		= ext3_write_begin,
 	.write_end		= ext3_writeback_write_end,
 	.bmap			= ext3_bmap,
@@ -1926,7 +1924,6 @@ static const struct address_space_operations ext3_journalled_aops = {
 	.readpage		= ext3_readpage,
 	.readpages		= ext3_readpages,
 	.writepage		= ext3_journalled_writepage,
-	.sync_page		= block_sync_page,
 	.write_begin		= ext3_write_begin,
 	.write_end		= ext3_journalled_write_end,
 	.set_page_dirty		= ext3_journalled_set_page_dirty,
diff --git a/fs/ext3/ioctl.c b/fs/ext3/ioctl.c
index fc080dd..f4090bd 100644
--- a/fs/ext3/ioctl.c
+++ b/fs/ext3/ioctl.c
@@ -38,7 +38,7 @@ long ext3_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		unsigned int oldflags;
 		unsigned int jflag;
 
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EACCES;
 
 		if (get_user(flags, (int __user *) arg))
@@ -123,7 +123,7 @@ flags_out:
 		__u32 generation;
 		int err;
 
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EPERM;
 
 		err = mnt_want_write(filp->f_path.mnt);
@@ -192,7 +192,7 @@ setversion_out:
 		if (err)
 			return err;
 
-		if (!is_owner_or_cap(inode)) {
+		if (!inode_owner_or_capable(inode)) {
 			err = -EACCES;
 			goto setrsvsz_out;
 		}
diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
index e0270d1..21eacd7 100644
--- a/fs/ext4/acl.c
+++ b/fs/ext4/acl.c
@@ -433,7 +433,7 @@ ext4_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
 		return -EINVAL;
 	if (!test_opt(inode->i_sb, POSIX_ACL))
 		return -EOPNOTSUPP;
-	if (!is_owner_or_cap(inode))
+	if (!inode_owner_or_capable(inode))
 		return -EPERM;
 
 	if (value) {
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index adf96b8..97b970e 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -21,6 +21,8 @@
 #include "ext4_jbd2.h"
 #include "mballoc.h"
 
+#include <trace/events/ext4.h>
+
 /*
  * balloc.c contains the blocks allocation and deallocation routines
  */
@@ -342,6 +344,7 @@ ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group)
 	 * We do it here so the bitmap uptodate bit
 	 * get set with buffer lock held.
 	 */
+	trace_ext4_read_block_bitmap_load(sb, block_group);
 	set_bitmap_uptodate(bh);
 	if (bh_submit_read(bh) < 0) {
 		put_bh(bh);
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 3aa0b72..4daaf2b 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -923,14 +923,14 @@ struct ext4_inode_info {
 #define test_opt2(sb, opt)		(EXT4_SB(sb)->s_mount_opt2 & \
 					 EXT4_MOUNT2_##opt)
 
-#define ext4_set_bit			ext2_set_bit
+#define ext4_set_bit			__test_and_set_bit_le
 #define ext4_set_bit_atomic		ext2_set_bit_atomic
-#define ext4_clear_bit			ext2_clear_bit
+#define ext4_clear_bit			__test_and_clear_bit_le
 #define ext4_clear_bit_atomic		ext2_clear_bit_atomic
-#define ext4_test_bit			ext2_test_bit
-#define ext4_find_first_zero_bit	ext2_find_first_zero_bit
-#define ext4_find_next_zero_bit		ext2_find_next_zero_bit
-#define ext4_find_next_bit		ext2_find_next_bit
+#define ext4_test_bit			test_bit_le
+#define ext4_find_first_zero_bit	find_first_zero_bit_le
+#define ext4_find_next_zero_bit		find_next_zero_bit_le
+#define ext4_find_next_bit		find_next_bit_le
 
 /*
  * Maximal mount counts between two filesystem checks
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index d8b992e..e25e99b 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -202,13 +202,6 @@ static inline int ext4_handle_has_enough_credits(handle_t *handle, int needed)
 	return 1;
 }
 
-static inline void ext4_journal_release_buffer(handle_t *handle,
-						struct buffer_head *bh)
-{
-	if (ext4_handle_valid(handle))
-		jbd2_journal_release_buffer(handle, bh);
-}
-
 static inline handle_t *ext4_journal_start(struct inode *inode, int nblocks)
 {
 	return ext4_journal_start_sb(inode->i_sb, nblocks);
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 7516fb9..dd2cb50 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -44,6 +44,8 @@
 #include "ext4_jbd2.h"
 #include "ext4_extents.h"
 
+#include <trace/events/ext4.h>
+
 static int ext4_ext_truncate_extend_restart(handle_t *handle,
 					    struct inode *inode,
 					    int needed)
@@ -664,6 +666,8 @@ ext4_ext_find_extent(struct inode *inode, ext4_lblk_t block,
 		if (unlikely(!bh))
 			goto err;
 		if (!bh_uptodate_or_lock(bh)) {
+			trace_ext4_ext_load_extent(inode, block,
+						path[ppos].p_block);
 			if (bh_submit_read(bh) < 0) {
 				put_bh(bh);
 				goto err;
@@ -1034,7 +1038,7 @@ cleanup:
 		for (i = 0; i < depth; i++) {
 			if (!ablocks[i])
 				continue;
-			ext4_free_blocks(handle, inode, 0, ablocks[i], 1,
+			ext4_free_blocks(handle, inode, NULL, ablocks[i], 1,
 					 EXT4_FREE_BLOCKS_METADATA);
 		}
 	}
@@ -2059,7 +2063,7 @@ static int ext4_ext_rm_idx(handle_t *handle, struct inode *inode,
 	if (err)
 		return err;
 	ext_debug("index is empty, remove it, free block %llu\n", leaf);
-	ext4_free_blocks(handle, inode, 0, leaf, 1,
+	ext4_free_blocks(handle, inode, NULL, leaf, 1,
 			 EXT4_FREE_BLOCKS_METADATA | EXT4_FREE_BLOCKS_FORGET);
 	return err;
 }
@@ -2156,7 +2160,7 @@ static int ext4_remove_blocks(handle_t *handle, struct inode *inode,
 		num = le32_to_cpu(ex->ee_block) + ee_len - from;
 		start = ext4_ext_pblock(ex) + ee_len - num;
 		ext_debug("free last %u blocks starting %llu\n", num, start);
-		ext4_free_blocks(handle, inode, 0, start, num, flags);
+		ext4_free_blocks(handle, inode, NULL, start, num, flags);
 	} else if (from == le32_to_cpu(ex->ee_block)
 		   && to <= le32_to_cpu(ex->ee_block) + ee_len - 1) {
 		printk(KERN_INFO "strange request: removal %u-%u from %u:%u\n",
@@ -3108,14 +3112,13 @@ static int check_eofblocks_fl(handle_t *handle, struct inode *inode,
 {
 	int i, depth;
 	struct ext4_extent_header *eh;
-	struct ext4_extent *ex, *last_ex;
+	struct ext4_extent *last_ex;
 
 	if (!ext4_test_inode_flag(inode, EXT4_INODE_EOFBLOCKS))
 		return 0;
 
 	depth = ext_depth(inode);
 	eh = path[depth].p_hdr;
-	ex = path[depth].p_ext;
 
 	if (unlikely(!eh->eh_entries)) {
 		EXT4_ERROR_INODE(inode, "eh->eh_entries == 0 and "
@@ -3295,9 +3298,8 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
 			struct ext4_map_blocks *map, int flags)
 {
 	struct ext4_ext_path *path = NULL;
-	struct ext4_extent_header *eh;
 	struct ext4_extent newex, *ex;
-	ext4_fsblk_t newblock;
+	ext4_fsblk_t newblock = 0;
 	int err = 0, depth, ret;
 	unsigned int allocated = 0;
 	struct ext4_allocation_request ar;
@@ -3305,6 +3307,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
 
 	ext_debug("blocks %u/%u requested for inode %lu\n",
 		  map->m_lblk, map->m_len, inode->i_ino);
+	trace_ext4_ext_map_blocks_enter(inode, map->m_lblk, map->m_len, flags);
 
 	/* check in cache */
 	if (ext4_ext_in_cache(inode, map->m_lblk, &newex)) {
@@ -3352,7 +3355,6 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
 		err = -EIO;
 		goto out2;
 	}
-	eh = path[depth].p_hdr;
 
 	ex = path[depth].p_ext;
 	if (ex) {
@@ -3485,7 +3487,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
 		/* not a good idea to call discard here directly,
 		 * but otherwise we'd need to call it every free() */
 		ext4_discard_preallocations(inode);
-		ext4_free_blocks(handle, inode, 0, ext4_ext_pblock(&newex),
+		ext4_free_blocks(handle, inode, NULL, ext4_ext_pblock(&newex),
 				 ext4_ext_get_actual_len(&newex), 0);
 		goto out2;
 	}
@@ -3525,6 +3527,8 @@ out2:
 		ext4_ext_drop_refs(path);
 		kfree(path);
 	}
+	trace_ext4_ext_map_blocks_exit(inode, map->m_lblk,
+		newblock, map->m_len, err ? err : allocated);
 	return err ? err : allocated;
 }
 
@@ -3658,6 +3662,7 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
 	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
 		return -EOPNOTSUPP;
 
+	trace_ext4_fallocate_enter(inode, offset, len, mode);
 	map.m_lblk = offset >> blkbits;
 	/*
 	 * We can't just convert len to max_blocks because
@@ -3673,6 +3678,7 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
 	ret = inode_newsize_ok(inode, (len + offset));
 	if (ret) {
 		mutex_unlock(&inode->i_mutex);
+		trace_ext4_fallocate_exit(inode, offset, max_blocks, ret);
 		return ret;
 	}
 retry:
@@ -3717,6 +3723,8 @@ retry:
 		goto retry;
 	}
 	mutex_unlock(&inode->i_mutex);
+	trace_ext4_fallocate_exit(inode, offset, max_blocks,
+				ret > 0 ? ret2 : ret);
 	return ret > 0 ? ret2 : ret;
 }
 
@@ -3775,6 +3783,7 @@ int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset,
 	}
 	return ret > 0 ? ret2 : ret;
 }
+
 /*
  * Callback function called for each extent to gather FIEMAP information.
  */
@@ -3782,38 +3791,162 @@ static int ext4_ext_fiemap_cb(struct inode *inode, struct ext4_ext_path *path,
 		       struct ext4_ext_cache *newex, struct ext4_extent *ex,
 		       void *data)
 {
-	struct fiemap_extent_info *fieinfo = data;
-	unsigned char blksize_bits = inode->i_sb->s_blocksize_bits;
 	__u64	logical;
 	__u64	physical;
 	__u64	length;
+	loff_t	size;
 	__u32	flags = 0;
-	int	error;
+	int		ret = 0;
+	struct fiemap_extent_info *fieinfo = data;
+	unsigned char blksize_bits;
 
-	logical =  (__u64)newex->ec_block << blksize_bits;
+	blksize_bits = inode->i_sb->s_blocksize_bits;
+	logical = (__u64)newex->ec_block << blksize_bits;
 
 	if (newex->ec_start == 0) {
-		pgoff_t offset;
-		struct page *page;
+		/*
+		 * No extent in extent-tree contains block @newex->ec_start,
+		 * then the block may stay in 1)a hole or 2)delayed-extent.
+		 *
+		 * Holes or delayed-extents are processed as follows.
+		 * 1. lookup dirty pages with specified range in pagecache.
+		 *    If no page is got, then there is no delayed-extent and
+		 *    return with EXT_CONTINUE.
+		 * 2. find the 1st mapped buffer,
+		 * 3. check if the mapped buffer is both in the request range
+		 *    and a delayed buffer. If not, there is no delayed-extent,
+		 *    then return.
+		 * 4. a delayed-extent is found, the extent will be collected.
+		 */
+		ext4_lblk_t	end = 0;
+		pgoff_t		last_offset;
+		pgoff_t		offset;
+		pgoff_t		index;
+		struct page	**pages = NULL;
 		struct buffer_head *bh = NULL;
+		struct buffer_head *head = NULL;
+		unsigned int nr_pages = PAGE_SIZE / sizeof(struct page *);
+
+		pages = kmalloc(PAGE_SIZE, GFP_KERNEL);
+		if (pages == NULL)
+			return -ENOMEM;
 
 		offset = logical >> PAGE_SHIFT;
-		page = find_get_page(inode->i_mapping, offset);
-		if (!page || !page_has_buffers(page))
-			return EXT_CONTINUE;
+repeat:
+		last_offset = offset;
+		head = NULL;
+		ret = find_get_pages_tag(inode->i_mapping, &offset,
+					PAGECACHE_TAG_DIRTY, nr_pages, pages);
+
+		if (!(flags & FIEMAP_EXTENT_DELALLOC)) {
+			/* First time, try to find a mapped buffer. */
+			if (ret == 0) {
+out:
+				for (index = 0; index < ret; index++)
+					page_cache_release(pages[index]);
+				/* just a hole. */
+				kfree(pages);
+				return EXT_CONTINUE;
+			}
 
-		bh = page_buffers(page);
+			/* Try to find the 1st mapped buffer. */
+			end = ((__u64)pages[0]->index << PAGE_SHIFT) >>
+				  blksize_bits;
+			if (!page_has_buffers(pages[0]))
+				goto out;
+			head = page_buffers(pages[0]);
+			if (!head)
+				goto out;
 
-		if (!bh)
-			return EXT_CONTINUE;
+			bh = head;
+			do {
+				if (buffer_mapped(bh)) {
+					/* get the 1st mapped buffer. */
+					if (end > newex->ec_block +
+						newex->ec_len)
+						/* The buffer is out of
+						 * the request range.
+						 */
+						goto out;
+					goto found_mapped_buffer;
+				}
+				bh = bh->b_this_page;
+				end++;
+			} while (bh != head);
 
-		if (buffer_delay(bh)) {
-			flags |= FIEMAP_EXTENT_DELALLOC;
-			page_cache_release(page);
+			/* No mapped buffer found. */
+			goto out;
 		} else {
-			page_cache_release(page);
-			return EXT_CONTINUE;
+			/*Find contiguous delayed buffers. */
+			if (ret > 0 && pages[0]->index == last_offset)
+				head = page_buffers(pages[0]);
+			bh = head;
 		}
+
+found_mapped_buffer:
+		if (bh != NULL && buffer_delay(bh)) {
+			/* 1st or contiguous delayed buffer found. */
+			if (!(flags & FIEMAP_EXTENT_DELALLOC)) {
+				/*
+				 * 1st delayed buffer found, record
+				 * the start of extent.
+				 */
+				flags |= FIEMAP_EXTENT_DELALLOC;
+				newex->ec_block = end;
+				logical = (__u64)end << blksize_bits;
+			}
+			/* Find contiguous delayed buffers. */
+			do {
+				if (!buffer_delay(bh))
+					goto found_delayed_extent;
+				bh = bh->b_this_page;
+				end++;
+			} while (bh != head);
+
+			for (index = 1; index < ret; index++) {
+				if (!page_has_buffers(pages[index])) {
+					bh = NULL;
+					break;
+				}
+				head = page_buffers(pages[index]);
+				if (!head) {
+					bh = NULL;
+					break;
+				}
+				if (pages[index]->index !=
+					pages[0]->index + index) {
+					/* Blocks are not contiguous. */
+					bh = NULL;
+					break;
+				}
+				bh = head;
+				do {
+					if (!buffer_delay(bh))
+						/* Delayed-extent ends. */
+						goto found_delayed_extent;
+					bh = bh->b_this_page;
+					end++;
+				} while (bh != head);
+			}
+		} else if (!(flags & FIEMAP_EXTENT_DELALLOC))
+			/* a hole found. */
+			goto out;
+
+found_delayed_extent:
+		newex->ec_len = min(end - newex->ec_block,
+						(ext4_lblk_t)EXT_INIT_MAX_LEN);
+		if (ret == nr_pages && bh != NULL &&
+			newex->ec_len < EXT_INIT_MAX_LEN &&
+			buffer_delay(bh)) {
+			/* Have not collected an extent and continue. */
+			for (index = 0; index < ret; index++)
+				page_cache_release(pages[index]);
+			goto repeat;
+		}
+
+		for (index = 0; index < ret; index++)
+			page_cache_release(pages[index]);
+		kfree(pages);
 	}
 
 	physical = (__u64)newex->ec_start << blksize_bits;
@@ -3822,32 +3955,16 @@ static int ext4_ext_fiemap_cb(struct inode *inode, struct ext4_ext_path *path,
 	if (ex && ext4_ext_is_uninitialized(ex))
 		flags |= FIEMAP_EXTENT_UNWRITTEN;
 
-	/*
-	 * If this extent reaches EXT_MAX_BLOCK, it must be last.
-	 *
-	 * Or if ext4_ext_next_allocated_block is EXT_MAX_BLOCK,
-	 * this also indicates no more allocated blocks.
-	 *
-	 * XXX this might miss a single-block extent at EXT_MAX_BLOCK
-	 */
-	if (ext4_ext_next_allocated_block(path) == EXT_MAX_BLOCK ||
-	    newex->ec_block + newex->ec_len - 1 == EXT_MAX_BLOCK) {
-		loff_t size = i_size_read(inode);
-		loff_t bs = EXT4_BLOCK_SIZE(inode->i_sb);
-
+	size = i_size_read(inode);
+	if (logical + length >= size)
 		flags |= FIEMAP_EXTENT_LAST;
-		if ((flags & FIEMAP_EXTENT_DELALLOC) &&
-		    logical+length > size)
-			length = (size - logical + bs - 1) & ~(bs-1);
-	}
 
-	error = fiemap_fill_next_extent(fieinfo, logical, physical,
+	ret = fiemap_fill_next_extent(fieinfo, logical, physical,
 					length, flags);
-	if (error < 0)
-		return error;
-	if (error == 1)
+	if (ret < 0)
+		return ret;
+	if (ret == 1)
 		return EXT_BREAK;
-
 	return EXT_CONTINUE;
 }
 
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index 7829b28..7f74019 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -164,20 +164,20 @@ int ext4_sync_file(struct file *file, int datasync)
 
 	J_ASSERT(ext4_journal_current_handle() == NULL);
 
-	trace_ext4_sync_file(file, datasync);
+	trace_ext4_sync_file_enter(file, datasync);
 
 	if (inode->i_sb->s_flags & MS_RDONLY)
 		return 0;
 
 	ret = ext4_flush_completed_IO(inode);
 	if (ret < 0)
-		return ret;
+		goto out;
 
 	if (!journal) {
 		ret = generic_file_fsync(file, datasync);
 		if (!ret && !list_empty(&inode->i_dentry))
 			ext4_sync_parent(inode);
-		return ret;
+		goto out;
 	}
 
 	/*
@@ -194,8 +194,10 @@ int ext4_sync_file(struct file *file, int datasync)
 	 *  (they were dirtied by commit).  But that's OK - the blocks are
 	 *  safe in-journal, which is all fsync() needs to ensure.
 	 */
-	if (ext4_should_journal_data(inode))
-		return ext4_force_commit(inode->i_sb);
+	if (ext4_should_journal_data(inode)) {
+		ret = ext4_force_commit(inode->i_sb);
+		goto out;
+	}
 
 	commit_tid = datasync ? ei->i_datasync_tid : ei->i_sync_tid;
 	if (jbd2_log_start_commit(journal, commit_tid)) {
@@ -215,5 +217,7 @@ int ext4_sync_file(struct file *file, int datasync)
 		ret = jbd2_log_wait_commit(journal, commit_tid);
 	} else if (journal->j_flags & JBD2_BARRIER)
 		blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
+ out:
+	trace_ext4_sync_file_exit(inode, ret);
 	return ret;
 }
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 78b79e1..21bb2f6 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -152,6 +152,7 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
 	 * We do it here so the bitmap uptodate bit
 	 * get set with buffer lock held.
 	 */
+	trace_ext4_load_inode_bitmap(sb, block_group);
 	set_bitmap_uptodate(bh);
 	if (bh_submit_read(bh) < 0) {
 		put_bh(bh);
@@ -649,7 +650,7 @@ static int find_group_other(struct super_block *sb, struct inode *parent,
 		*group = parent_group + flex_size;
 		if (*group > ngroups)
 			*group = 0;
-		return find_group_orlov(sb, parent, group, mode, 0);
+		return find_group_orlov(sb, parent, group, mode, NULL);
 	}
 
 	/*
@@ -1054,6 +1055,11 @@ got:
 		}
 	}
 
+	if (ext4_handle_valid(handle)) {
+		ei->i_sync_tid = handle->h_transaction->t_tid;
+		ei->i_datasync_tid = handle->h_transaction->t_tid;
+	}
+
 	err = ext4_mark_inode_dirty(handle, inode);
 	if (err) {
 		ext4_std_error(sb, err);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9f7f9e4..1a86282 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -173,7 +173,7 @@ int ext4_truncate_restart_trans(handle_t *handle, struct inode *inode,
 	BUG_ON(EXT4_JOURNAL(inode) == NULL);
 	jbd_debug(2, "restarting handle %p\n", handle);
 	up_write(&EXT4_I(inode)->i_data_sem);
-	ret = ext4_journal_restart(handle, blocks_for_truncate(inode));
+	ret = ext4_journal_restart(handle, nblocks);
 	down_write(&EXT4_I(inode)->i_data_sem);
 	ext4_discard_preallocations(inode);
 
@@ -720,7 +720,7 @@ allocated:
 	return ret;
 failed_out:
 	for (i = 0; i < index; i++)
-		ext4_free_blocks(handle, inode, 0, new_blocks[i], 1, 0);
+		ext4_free_blocks(handle, inode, NULL, new_blocks[i], 1, 0);
 	return ret;
 }
 
@@ -823,20 +823,20 @@ static int ext4_alloc_branch(handle_t *handle, struct inode *inode,
 	return err;
 failed:
 	/* Allocation failed, free what we already allocated */
-	ext4_free_blocks(handle, inode, 0, new_blocks[0], 1, 0);
+	ext4_free_blocks(handle, inode, NULL, new_blocks[0], 1, 0);
 	for (i = 1; i <= n ; i++) {
 		/*
 		 * branch[i].bh is newly allocated, so there is no
 		 * need to revoke the block, which is why we don't
 		 * need to set EXT4_FREE_BLOCKS_METADATA.
 		 */
-		ext4_free_blocks(handle, inode, 0, new_blocks[i], 1,
+		ext4_free_blocks(handle, inode, NULL, new_blocks[i], 1,
 				 EXT4_FREE_BLOCKS_FORGET);
 	}
 	for (i = n+1; i < indirect_blks; i++)
-		ext4_free_blocks(handle, inode, 0, new_blocks[i], 1, 0);
+		ext4_free_blocks(handle, inode, NULL, new_blocks[i], 1, 0);
 
-	ext4_free_blocks(handle, inode, 0, new_blocks[i], num, 0);
+	ext4_free_blocks(handle, inode, NULL, new_blocks[i], num, 0);
 
 	return err;
 }
@@ -924,7 +924,7 @@ err_out:
 		ext4_free_blocks(handle, inode, where[i].bh, 0, 1,
 				 EXT4_FREE_BLOCKS_FORGET);
 	}
-	ext4_free_blocks(handle, inode, 0, le32_to_cpu(where[num].key),
+	ext4_free_blocks(handle, inode, NULL, le32_to_cpu(where[num].key),
 			 blks, 0);
 
 	return err;
@@ -973,6 +973,7 @@ static int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
 	int count = 0;
 	ext4_fsblk_t first_block = 0;
 
+	trace_ext4_ind_map_blocks_enter(inode, map->m_lblk, map->m_len, flags);
 	J_ASSERT(!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)));
 	J_ASSERT(handle != NULL || (flags & EXT4_GET_BLOCKS_CREATE) == 0);
 	depth = ext4_block_to_path(inode, map->m_lblk, offsets,
@@ -1058,6 +1059,8 @@ cleanup:
 		partial--;
 	}
 out:
+	trace_ext4_ind_map_blocks_exit(inode, map->m_lblk,
+				map->m_pblk, map->m_len, err);
 	return err;
 }
 
@@ -2060,7 +2063,7 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd,
 		if (nr_pages == 0)
 			break;
 		for (i = 0; i < nr_pages; i++) {
-			int commit_write = 0, redirty_page = 0;
+			int commit_write = 0, skip_page = 0;
 			struct page *page = pvec.pages[i];
 
 			index = page->index;
@@ -2086,14 +2089,12 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd,
 			 * If the page does not have buffers (for
 			 * whatever reason), try to create them using
 			 * __block_write_begin.  If this fails,
-			 * redirty the page and move on.
+			 * skip the page and move on.
 			 */
 			if (!page_has_buffers(page)) {
 				if (__block_write_begin(page, 0, len,
 						noalloc_get_block_write)) {
-				redirty_page:
-					redirty_page_for_writepage(mpd->wbc,
-								   page);
+				skip_page:
 					unlock_page(page);
 					continue;
 				}
@@ -2104,7 +2105,7 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd,
 			block_start = 0;
 			do {
 				if (!bh)
-					goto redirty_page;
+					goto skip_page;
 				if (map && (cur_logical >= map->m_lblk) &&
 				    (cur_logical <= (map->m_lblk +
 						     (map->m_len - 1)))) {
@@ -2120,22 +2121,23 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd,
 					clear_buffer_unwritten(bh);
 				}
 
-				/* redirty page if block allocation undone */
+				/* skip page if block allocation undone */
 				if (buffer_delay(bh) || buffer_unwritten(bh))
-					redirty_page = 1;
+					skip_page = 1;
 				bh = bh->b_this_page;
 				block_start += bh->b_size;
 				cur_logical++;
 				pblock++;
 			} while (bh != page_bufs);
 
-			if (redirty_page)
-				goto redirty_page;
+			if (skip_page)
+				goto skip_page;
 
 			if (commit_write)
 				/* mark the buffer_heads as dirty & uptodate */
 				block_commit_write(page, 0, len);
 
+			clear_page_dirty_for_io(page);
 			/*
 			 * Delalloc doesn't support data journalling,
 			 * but eventually maybe we'll lift this
@@ -2165,8 +2167,7 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd,
 	return ret;
 }
 
-static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd,
-					sector_t logical, long blk_cnt)
+static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd)
 {
 	int nr_pages, i;
 	pgoff_t index, end;
@@ -2174,9 +2175,8 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd,
 	struct inode *inode = mpd->inode;
 	struct address_space *mapping = inode->i_mapping;
 
-	index = logical >> (PAGE_CACHE_SHIFT - inode->i_blkbits);
-	end   = (logical + blk_cnt - 1) >>
-				(PAGE_CACHE_SHIFT - inode->i_blkbits);
+	index = mpd->first_page;
+	end   = mpd->next_page - 1;
 	while (index <= end) {
 		nr_pages = pagevec_lookup(&pvec, mapping, index, PAGEVEC_SIZE);
 		if (nr_pages == 0)
@@ -2279,9 +2279,8 @@ static void mpage_da_map_and_submit(struct mpage_da_data *mpd)
 		err = blks;
 		/*
 		 * If get block returns EAGAIN or ENOSPC and there
-		 * appears to be free blocks we will call
-		 * ext4_writepage() for all of the pages which will
-		 * just redirty the pages.
+		 * appears to be free blocks we will just let
+		 * mpage_da_submit_io() unlock all of the pages.
 		 */
 		if (err == -EAGAIN)
 			goto submit_io;
@@ -2312,8 +2311,10 @@ static void mpage_da_map_and_submit(struct mpage_da_data *mpd)
 				ext4_print_free_blocks(mpd->inode);
 		}
 		/* invalidate all the pages */
-		ext4_da_block_invalidatepages(mpd, next,
-				mpd->b_size >> mpd->inode->i_blkbits);
+		ext4_da_block_invalidatepages(mpd);
+
+		/* Mark this page range as having been completed */
+		mpd->io_done = 1;
 		return;
 	}
 	BUG_ON(blks == 0);
@@ -2438,102 +2439,6 @@ static int ext4_bh_delay_or_unwritten(handle_t *handle, struct buffer_head *bh)
 }
 
 /*
- * __mpage_da_writepage - finds extent of pages and blocks
- *
- * @page: page to consider
- * @wbc: not used, we just follow rules
- * @data: context
- *
- * The function finds extents of pages and scan them for all blocks.
- */
-static int __mpage_da_writepage(struct page *page,
-				struct writeback_control *wbc,
-				struct mpage_da_data *mpd)
-{
-	struct inode *inode = mpd->inode;
-	struct buffer_head *bh, *head;
-	sector_t logical;
-
-	/*
-	 * Can we merge this page to current extent?
-	 */
-	if (mpd->next_page != page->index) {
-		/*
-		 * Nope, we can't. So, we map non-allocated blocks
-		 * and start IO on them
-		 */
-		if (mpd->next_page != mpd->first_page) {
-			mpage_da_map_and_submit(mpd);
-			/*
-			 * skip rest of the page in the page_vec
-			 */
-			redirty_page_for_writepage(wbc, page);
-			unlock_page(page);
-			return MPAGE_DA_EXTENT_TAIL;
-		}
-
-		/*
-		 * Start next extent of pages ...
-		 */
-		mpd->first_page = page->index;
-
-		/*
-		 * ... and blocks
-		 */
-		mpd->b_size = 0;
-		mpd->b_state = 0;
-		mpd->b_blocknr = 0;
-	}
-
-	mpd->next_page = page->index + 1;
-	logical = (sector_t) page->index <<
-		  (PAGE_CACHE_SHIFT - inode->i_blkbits);
-
-	if (!page_has_buffers(page)) {
-		mpage_add_bh_to_extent(mpd, logical, PAGE_CACHE_SIZE,
-				       (1 << BH_Dirty) | (1 << BH_Uptodate));
-		if (mpd->io_done)
-			return MPAGE_DA_EXTENT_TAIL;
-	} else {
-		/*
-		 * Page with regular buffer heads, just add all dirty ones
-		 */
-		head = page_buffers(page);
-		bh = head;
-		do {
-			BUG_ON(buffer_locked(bh));
-			/*
-			 * We need to try to allocate
-			 * unmapped blocks in the same page.
-			 * Otherwise we won't make progress
-			 * with the page in ext4_writepage
-			 */
-			if (ext4_bh_delay_or_unwritten(NULL, bh)) {
-				mpage_add_bh_to_extent(mpd, logical,
-						       bh->b_size,
-						       bh->b_state);
-				if (mpd->io_done)
-					return MPAGE_DA_EXTENT_TAIL;
-			} else if (buffer_dirty(bh) && (buffer_mapped(bh))) {
-				/*
-				 * mapped dirty buffer. We need to update
-				 * the b_state because we look at
-				 * b_state in mpage_da_map_blocks. We don't
-				 * update b_size because if we find an
-				 * unmapped buffer_head later we need to
-				 * use the b_state flag of that buffer_head.
-				 */
-				if (mpd->b_size == 0)
-					mpd->b_state = bh->b_state & BH_FLAGS;
-			}
-			logical++;
-		} while ((bh = bh->b_this_page) != head);
-	}
-
-	return 0;
-}
-
-/*
  * This is a special get_blocks_t callback which is used by
  * ext4_da_write_begin().  It will either return mapped block or
  * reserve space for a single block.
@@ -2597,7 +2502,6 @@ static int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
 		 * for partial write.
 		 */
 		set_buffer_new(bh);
-		set_buffer_mapped(bh);
 	}
 	return 0;
 }
@@ -2811,27 +2715,27 @@ static int ext4_da_writepages_trans_blocks(struct inode *inode)
 
 /*
  * write_cache_pages_da - walk the list of dirty pages of the given
- * address space and call the callback function (which usually writes
- * the pages).
- *
- * This is a forked version of write_cache_pages().  Differences:
- *	Range cyclic is ignored.
- *	no_nrwrite_index_update is always presumed true
+ * address space and accumulate pages that need writing, and call
+ * mpage_da_map_and_submit to map a single contiguous memory region
+ * and then write them.
  */
 static int write_cache_pages_da(struct address_space *mapping,
 				struct writeback_control *wbc,
 				struct mpage_da_data *mpd,
 				pgoff_t *done_index)
 {
-	int ret = 0;
-	int done = 0;
-	struct pagevec pvec;
-	unsigned nr_pages;
-	pgoff_t index;
-	pgoff_t end;		/* Inclusive */
-	long nr_to_write = wbc->nr_to_write;
-	int tag;
-
+	struct buffer_head	*bh, *head;
+	struct inode		*inode = mapping->host;
+	struct pagevec		pvec;
+	unsigned int		nr_pages;
+	sector_t		logical;
+	pgoff_t			index, end;
+	long			nr_to_write = wbc->nr_to_write;
+	int			i, tag, ret = 0;
+
+	memset(mpd, 0, sizeof(struct mpage_da_data));
+	mpd->wbc = wbc;
+	mpd->inode = inode;
 	pagevec_init(&pvec, 0);
 	index = wbc->range_start >> PAGE_CACHE_SHIFT;
 	end = wbc->range_end >> PAGE_CACHE_SHIFT;
@@ -2842,13 +2746,11 @@ static int write_cache_pages_da(struct address_space *mapping,
 		tag = PAGECACHE_TAG_DIRTY;
 
 	*done_index = index;
-	while (!done && (index <= end)) {
-		int i;
-
+	while (index <= end) {
 		nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, tag,
 			      min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
 		if (nr_pages == 0)
-			break;
+			return 0;
 
 		for (i = 0; i < nr_pages; i++) {
 			struct page *page = pvec.pages[i];
@@ -2860,60 +2762,100 @@ static int write_cache_pages_da(struct address_space *mapping,
 			 * mapping. However, page->index will not change
 			 * because we have a reference on the page.
 			 */
-			if (page->index > end) {
-				done = 1;
-				break;
-			}
+			if (page->index > end)
+				goto out;
 
 			*done_index = page->index + 1;
 
+			/*
+			 * If we can't merge this page, and we have
+			 * accumulated an contiguous region, write it
+			 */
+			if ((mpd->next_page != page->index) &&
+			    (mpd->next_page != mpd->first_page)) {
+				mpage_da_map_and_submit(mpd);
+				goto ret_extent_tail;
+			}
+
 			lock_page(page);
 
 			/*
-			 * Page truncated or invalidated. We can freely skip it
-			 * then, even for data integrity operations: the page
-			 * has disappeared concurrently, so there could be no
-			 * real expectation of this data interity operation
-			 * even if there is now a new, dirty page at the same
-			 * pagecache address.
+			 * If the page is no longer dirty, or its
+			 * mapping no longer corresponds to inode we
+			 * are writing (which means it has been
+			 * truncated or invalidated), or the page is
+			 * already under writeback and we are not
+			 * doing a data integrity writeback, skip the page
 			 */
-			if (unlikely(page->mapping != mapping)) {
-continue_unlock:
+			if (!PageDirty(page) ||
+			    (PageWriteback(page) &&
+			     (wbc->sync_mode == WB_SYNC_NONE)) ||
+			    unlikely(page->mapping != mapping)) {
 				unlock_page(page);
 				continue;
 			}
 
-			if (!PageDirty(page)) {
-				/* someone wrote it for us */
-				goto continue_unlock;
-			}
-
-			if (PageWriteback(page)) {
-				if (wbc->sync_mode != WB_SYNC_NONE)
-					wait_on_page_writeback(page);
-				else
-					goto continue_unlock;
-			}
+			if (PageWriteback(page))
+				wait_on_page_writeback(page);
 
 			BUG_ON(PageWriteback(page));
-			if (!clear_page_dirty_for_io(page))
-				goto continue_unlock;
 
-			ret = __mpage_da_writepage(page, wbc, mpd);
-			if (unlikely(ret)) {
-				if (ret == AOP_WRITEPAGE_ACTIVATE) {
-					unlock_page(page);
-					ret = 0;
-				} else {
-					done = 1;
-					break;
-				}
+			if (mpd->next_page != page->index)
+				mpd->first_page = page->index;
+			mpd->next_page = page->index + 1;
+			logical = (sector_t) page->index <<
+				(PAGE_CACHE_SHIFT - inode->i_blkbits);
+
+			if (!page_has_buffers(page)) {
+				mpage_add_bh_to_extent(mpd, logical,
+						       PAGE_CACHE_SIZE,
+						       (1 << BH_Dirty) | (1 << BH_Uptodate));
+				if (mpd->io_done)
+					goto ret_extent_tail;
+			} else {
+				/*
+				 * Page with regular buffer heads,
+				 * just add all dirty ones
+				 */
+				head = page_buffers(page);
+				bh = head;
+				do {
+					BUG_ON(buffer_locked(bh));
+					/*
+					 * We need to try to allocate
+					 * unmapped blocks in the same page.
+					 * Otherwise we won't make progress
+					 * with the page in ext4_writepage
+					 */
+					if (ext4_bh_delay_or_unwritten(NULL, bh)) {
+						mpage_add_bh_to_extent(mpd, logical,
+								       bh->b_size,
+								       bh->b_state);
+						if (mpd->io_done)
+							goto ret_extent_tail;
+					} else if (buffer_dirty(bh) && (buffer_mapped(bh))) {
+						/*
+						 * mapped dirty buffer. We need
+						 * to update the b_state
+						 * because we look at b_state
+						 * in mpage_da_map_blocks.  We
+						 * don't update b_size because
+						 * if we find an unmapped
+						 * buffer_head later we need to
+						 * use the b_state flag of that
+						 * buffer_head.
+						 */
+						if (mpd->b_size == 0)
+							mpd->b_state = bh->b_state & BH_FLAGS;
+					}
+					logical++;
+				} while ((bh = bh->b_this_page) != head);
 			}
 
 			if (nr_to_write > 0) {
 				nr_to_write--;
 				if (nr_to_write == 0 &&
-				    wbc->sync_mode == WB_SYNC_NONE) {
+				    wbc->sync_mode == WB_SYNC_NONE)
 					/*
 					 * We stop writing back only if we are
 					 * not doing integrity sync. In case of
@@ -2924,14 +2866,18 @@ continue_unlock:
 					 * pages, but have not synced all of the
 					 * old dirty pages.
 					 */
-					done = 1;
-					break;
-				}
+					goto out;
 			}
 		}
 		pagevec_release(&pvec);
 		cond_resched();
 	}
+	return 0;
+ret_extent_tail:
+	ret = MPAGE_DA_EXTENT_TAIL;
+out:
+	pagevec_release(&pvec);
+	cond_resched();
 	return ret;
 }
 
@@ -2945,7 +2891,6 @@ static int ext4_da_writepages(struct address_space *mapping,
 	struct mpage_da_data mpd;
 	struct inode *inode = mapping->host;
 	int pages_written = 0;
-	long pages_skipped;
 	unsigned int max_pages;
 	int range_cyclic, cycled = 1, io_done = 0;
 	int needed_blocks, ret = 0;
@@ -3028,11 +2973,6 @@ static int ext4_da_writepages(struct address_space *mapping,
 		wbc->nr_to_write = desired_nr_to_write;
 	}
 
-	mpd.wbc = wbc;
-	mpd.inode = mapping->host;
-
-	pages_skipped = wbc->pages_skipped;
-
 retry:
 	if (wbc->sync_mode == WB_SYNC_ALL)
 		tag_pages_for_writeback(mapping, index, end);
@@ -3059,22 +2999,10 @@ retry:
 		}
 
 		/*
-		 * Now call __mpage_da_writepage to find the next
+		 * Now call write_cache_pages_da() to find the next
 		 * contiguous region of logical blocks that need
-		 * blocks to be allocated by ext4.  We don't actually
-		 * submit the blocks for I/O here, even though
-		 * write_cache_pages thinks it will, and will set the
-		 * pages as clean for write before calling
-		 * __mpage_da_writepage().
+		 * blocks to be allocated by ext4 and submit them.
 		 */
-		mpd.b_size = 0;
-		mpd.b_state = 0;
-		mpd.b_blocknr = 0;
-		mpd.first_page = 0;
-		mpd.next_page = 0;
-		mpd.io_done = 0;
-		mpd.pages_written = 0;
-		mpd.retval = 0;
 		ret = write_cache_pages_da(mapping, wbc, &mpd, &done_index);
 		/*
 		 * If we have a contiguous extent of pages and we
@@ -3096,7 +3024,6 @@ retry:
 			 * and try again
 			 */
 			jbd2_journal_force_commit_nested(sbi->s_journal);
-			wbc->pages_skipped = pages_skipped;
 			ret = 0;
 		} else if (ret == MPAGE_DA_EXTENT_TAIL) {
 			/*
@@ -3104,7 +3031,6 @@ retry:
 			 * rest of the pages
 			 */
 			pages_written += mpd.pages_written;
-			wbc->pages_skipped = pages_skipped;
 			ret = 0;
 			io_done = 1;
 		} else if (wbc->nr_to_write)
@@ -3122,11 +3048,6 @@ retry:
 		wbc->range_end  = mapping->writeback_index - 1;
 		goto retry;
 	}
-	if (pages_skipped != wbc->pages_skipped)
-		ext4_msg(inode->i_sb, KERN_CRIT,
-			 "This should not happen leaving %s "
-			 "with nr_to_write = %ld ret = %d",
-			 __func__, wbc->nr_to_write, ret);
 
 	/* Update index */
 	wbc->range_cyclic = range_cyclic;
@@ -3460,6 +3381,7 @@ static sector_t ext4_bmap(struct address_space *mapping, sector_t block)
 
 static int ext4_readpage(struct file *file, struct page *page)
 {
+	trace_ext4_readpage(page);
 	return mpage_readpage(page, ext4_get_block);
 }
 
@@ -3494,6 +3416,8 @@ static void ext4_invalidatepage(struct page *page, unsigned long offset)
 {
 	journal_t *journal = EXT4_JOURNAL(page->mapping->host);
 
+	trace_ext4_invalidatepage(page, offset);
+
 	/*
 	 * free any io_end structure allocated for buffers to be discarded
 	 */
@@ -3515,6 +3439,8 @@ static int ext4_releasepage(struct page *page, gfp_t wait)
 {
 	journal_t *journal = EXT4_JOURNAL(page->mapping->host);
 
+	trace_ext4_releasepage(page);
+
 	WARN_ON(PageChecked(page));
 	if (!page_has_buffers(page))
 		return 0;
@@ -3873,11 +3799,16 @@ static ssize_t ext4_direct_IO(int rw, struct kiocb *iocb,
 {
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_mapping->host;
+	ssize_t ret;
 
+	trace_ext4_direct_IO_enter(inode, offset, iov_length(iov, nr_segs), rw);
 	if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
-		return ext4_ext_direct_IO(rw, iocb, iov, offset, nr_segs);
-
-	return ext4_ind_direct_IO(rw, iocb, iov, offset, nr_segs);
+		ret = ext4_ext_direct_IO(rw, iocb, iov, offset, nr_segs);
+	else
+		ret = ext4_ind_direct_IO(rw, iocb, iov, offset, nr_segs);
+	trace_ext4_direct_IO_exit(inode, offset,
+				iov_length(iov, nr_segs), rw, ret);
+	return ret;
 }
 
 /*
@@ -3903,7 +3834,6 @@ static const struct address_space_operations ext4_ordered_aops = {
 	.readpage		= ext4_readpage,
 	.readpages		= ext4_readpages,
 	.writepage		= ext4_writepage,
-	.sync_page		= block_sync_page,
 	.write_begin		= ext4_write_begin,
 	.write_end		= ext4_ordered_write_end,
 	.bmap			= ext4_bmap,
@@ -3919,7 +3849,6 @@ static const struct address_space_operations ext4_writeback_aops = {
 	.readpage		= ext4_readpage,
 	.readpages		= ext4_readpages,
 	.writepage		= ext4_writepage,
-	.sync_page		= block_sync_page,
 	.write_begin		= ext4_write_begin,
 	.write_end		= ext4_writeback_write_end,
 	.bmap			= ext4_bmap,
@@ -3935,7 +3864,6 @@ static const struct address_space_operations ext4_journalled_aops = {
 	.readpage		= ext4_readpage,
 	.readpages		= ext4_readpages,
 	.writepage		= ext4_writepage,
-	.sync_page		= block_sync_page,
 	.write_begin		= ext4_write_begin,
 	.write_end		= ext4_journalled_write_end,
 	.set_page_dirty		= ext4_journalled_set_page_dirty,
@@ -3951,7 +3879,6 @@ static const struct address_space_operations ext4_da_aops = {
 	.readpages		= ext4_readpages,
 	.writepage		= ext4_writepage,
 	.writepages		= ext4_da_writepages,
-	.sync_page		= block_sync_page,
 	.write_begin		= ext4_da_write_begin,
 	.write_end		= ext4_da_write_end,
 	.bmap			= ext4_bmap,
@@ -4177,6 +4104,9 @@ no_top:
  *
  * We release `count' blocks on disk, but (last - first) may be greater
  * than `count' because there can be holes in there.
+ *
+ * Return 0 on success, 1 on invalid block range
+ * and < 0 on fatal error.
  */
 static int ext4_clear_blocks(handle_t *handle, struct inode *inode,
 			     struct buffer_head *bh,
@@ -4203,33 +4133,32 @@ static int ext4_clear_blocks(handle_t *handle, struct inode *inode,
 		if (bh) {
 			BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
 			err = ext4_handle_dirty_metadata(handle, inode, bh);
-			if (unlikely(err)) {
-				ext4_std_error(inode->i_sb, err);
-				return 1;
-			}
+			if (unlikely(err))
+				goto out_err;
 		}
 		err = ext4_mark_inode_dirty(handle, inode);
-		if (unlikely(err)) {
-			ext4_std_error(inode->i_sb, err);
-			return 1;
-		}
+		if (unlikely(err))
+			goto out_err;
 		err = ext4_truncate_restart_trans(handle, inode,
 						  blocks_for_truncate(inode));
-		if (unlikely(err)) {
-			ext4_std_error(inode->i_sb, err);
-			return 1;
-		}
+		if (unlikely(err))
+			goto out_err;
 		if (bh) {
 			BUFFER_TRACE(bh, "retaking write access");
-			ext4_journal_get_write_access(handle, bh);
+			err = ext4_journal_get_write_access(handle, bh);
+			if (unlikely(err))
+				goto out_err;
 		}
 	}
 
 	for (p = first; p < last; p++)
 		*p = 0;
 
-	ext4_free_blocks(handle, inode, 0, block_to_free, count, flags);
+	ext4_free_blocks(handle, inode, NULL, block_to_free, count, flags);
 	return 0;
+out_err:
+	ext4_std_error(inode->i_sb, err);
+	return err;
 }
 
 /**
@@ -4263,7 +4192,7 @@ static void ext4_free_data(handle_t *handle, struct inode *inode,
 	ext4_fsblk_t nr;		    /* Current block # */
 	__le32 *p;			    /* Pointer into inode/ind
 					       for current block */
-	int err;
+	int err = 0;
 
 	if (this_bh) {				/* For indirect block */
 		BUFFER_TRACE(this_bh, "get_write_access");
@@ -4285,9 +4214,10 @@ static void ext4_free_data(handle_t *handle, struct inode *inode,
 			} else if (nr == block_to_free + count) {
 				count++;
 			} else {
-				if (ext4_clear_blocks(handle, inode, this_bh,
-						      block_to_free, count,
-						      block_to_free_p, p))
+				err = ext4_clear_blocks(handle, inode, this_bh,
+						        block_to_free, count,
+						        block_to_free_p, p);
+				if (err)
 					break;
 				block_to_free = nr;
 				block_to_free_p = p;
@@ -4296,9 +4226,12 @@ static void ext4_free_data(handle_t *handle, struct inode *inode,
 		}
 	}
 
-	if (count > 0)
-		ext4_clear_blocks(handle, inode, this_bh, block_to_free,
-				  count, block_to_free_p, p);
+	if (!err && count > 0)
+		err = ext4_clear_blocks(handle, inode, this_bh, block_to_free,
+					count, block_to_free_p, p);
+	if (err < 0)
+		/* fatal error */
+		return;
 
 	if (this_bh) {
 		BUFFER_TRACE(this_bh, "call ext4_handle_dirty_metadata");
@@ -4416,7 +4349,7 @@ static void ext4_free_branches(handle_t *handle, struct inode *inode,
 			 * transaction where the data blocks are
 			 * actually freed.
 			 */
-			ext4_free_blocks(handle, inode, 0, nr, 1,
+			ext4_free_blocks(handle, inode, NULL, nr, 1,
 					 EXT4_FREE_BLOCKS_METADATA|
 					 EXT4_FREE_BLOCKS_FORGET);
 
@@ -4500,6 +4433,8 @@ void ext4_truncate(struct inode *inode)
 	ext4_lblk_t last_block;
 	unsigned blocksize = inode->i_sb->s_blocksize;
 
+	trace_ext4_truncate_enter(inode);
+
 	if (!ext4_can_truncate(inode))
 		return;
 
@@ -4510,6 +4445,7 @@ void ext4_truncate(struct inode *inode)
 
 	if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
 		ext4_ext_truncate(inode);
+		trace_ext4_truncate_exit(inode);
 		return;
 	}
 
@@ -4639,6 +4575,7 @@ out_stop:
 		ext4_orphan_del(handle, inode);
 
 	ext4_journal_stop(handle);
+	trace_ext4_truncate_exit(inode);
 }
 
 /*
@@ -4770,6 +4707,7 @@ make_io:
 		 * has in-inode xattrs, or we don't have this inode in memory.
 		 * Read the block from disk.
 		 */
+		trace_ext4_load_inode(inode);
 		get_bh(bh);
 		bh->b_end_io = end_buffer_read_sync;
 		submit_bh(READ_META, bh);
@@ -4875,7 +4813,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
 		return inode;
 
 	ei = EXT4_I(inode);
-	iloc.bh = 0;
+	iloc.bh = NULL;
 
 	ret = __ext4_get_inode_loc(inode, &iloc, 0);
 	if (ret < 0)
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index eb3bc2f..808c554 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -38,7 +38,7 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		unsigned int oldflags;
 		unsigned int jflag;
 
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EACCES;
 
 		if (get_user(flags, (int __user *) arg))
@@ -146,7 +146,7 @@ flags_out:
 		__u32 generation;
 		int err;
 
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EPERM;
 
 		err = mnt_want_write(filp->f_path.mnt);
@@ -298,7 +298,7 @@ mext_out:
 	case EXT4_IOC_MIGRATE:
 	{
 		int err;
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EACCES;
 
 		err = mnt_want_write(filp->f_path.mnt);
@@ -320,7 +320,7 @@ mext_out:
 	case EXT4_IOC_ALLOC_DA_BLKS:
 	{
 		int err;
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EACCES;
 
 		err = mnt_want_write(filp->f_path.mnt);
@@ -334,16 +334,22 @@ mext_out:
 	case FITRIM:
 	{
 		struct super_block *sb = inode->i_sb;
+		struct request_queue *q = bdev_get_queue(sb->s_bdev);
 		struct fstrim_range range;
 		int ret = 0;
 
 		if (!capable(CAP_SYS_ADMIN))
 			return -EPERM;
 
+		if (!blk_queue_discard(q))
+			return -EOPNOTSUPP;
+
 		if (copy_from_user(&range, (struct fstrim_range *)arg,
 		    sizeof(range)))
 			return -EFAULT;
 
+		range.minlen = max((unsigned int)range.minlen,
+				   q->limits.discard_granularity);
 		ret = ext4_trim_fs(sb, &range);
 		if (ret < 0)
 			return ret;
@@ -421,6 +427,7 @@ long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		return err;
 	}
 	case EXT4_IOC_MOVE_EXT:
+	case FITRIM:
 		break;
 	default:
 		return -ENOIOCTLCMD;
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index d1fe09a..a5837a8 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -432,9 +432,10 @@ static void *mb_find_buddy(struct ext4_buddy *e4b, int order, int *max)
 	}
 
 	/* at order 0 we see each particular block */
-	*max = 1 << (e4b->bd_blkbits + 3);
-	if (order == 0)
+	if (order == 0) {
+		*max = 1 << (e4b->bd_blkbits + 3);
 		return EXT4_MB_BITMAP(e4b);
+	}
 
 	bb = EXT4_MB_BUDDY(e4b) + EXT4_SB(e4b->bd_sb)->s_mb_offsets[order];
 	*max = EXT4_SB(e4b->bd_sb)->s_mb_maxs[order];
@@ -616,7 +617,6 @@ static int __mb_check_buddy(struct ext4_buddy *e4b, char *file,
 	MB_CHECK_ASSERT(e4b->bd_info->bb_fragments == fragments);
 
 	grp = ext4_get_group_info(sb, e4b->bd_group);
-	buddy = mb_find_buddy(e4b, 0, &max);
 	list_for_each(cur, &grp->bb_prealloc_list) {
 		ext4_group_t groupnr;
 		struct ext4_prealloc_space *pa;
@@ -635,7 +635,12 @@ static int __mb_check_buddy(struct ext4_buddy *e4b, char *file,
 #define mb_check_buddy(e4b)
 #endif
 
-/* FIXME!! need more doc */
+/*
+ * Divide blocks started from @first with length @len into
+ * smaller chunks with power of 2 blocks.
+ * Clear the bits in bitmap which the blocks of the chunk(s) covered,
+ * then increase bb_counters[] for corresponded chunk size.
+ */
 static void ext4_mb_mark_free_simple(struct super_block *sb,
 				void *buddy, ext4_grpblk_t first, ext4_grpblk_t len,
 					struct ext4_group_info *grp)
@@ -2381,7 +2386,7 @@ static int ext4_mb_init_backend(struct super_block *sb)
 	/* An 8TB filesystem with 64-bit pointers requires a 4096 byte
 	 * kmalloc. A 128kb malloc should suffice for a 256TB filesystem.
 	 * So a two level scheme suffices for now. */
-	sbi->s_group_info = kmalloc(array_size, GFP_KERNEL);
+	sbi->s_group_info = kzalloc(array_size, GFP_KERNEL);
 	if (sbi->s_group_info == NULL) {
 		printk(KERN_ERR "EXT4-fs: can't allocate buddy meta group\n");
 		return -ENOMEM;
@@ -3208,7 +3213,7 @@ ext4_mb_check_group_pa(ext4_fsblk_t goal_block,
 	cur_distance = abs(goal_block - cpa->pa_pstart);
 	new_distance = abs(goal_block - pa->pa_pstart);
 
-	if (cur_distance < new_distance)
+	if (cur_distance <= new_distance)
 		return cpa;
 
 	/* drop the previous reference */
@@ -3907,7 +3912,8 @@ static void ext4_mb_show_ac(struct ext4_allocation_context *ac)
 	struct super_block *sb = ac->ac_sb;
 	ext4_group_t ngroups, i;
 
-	if (EXT4_SB(sb)->s_mount_flags & EXT4_MF_FS_ABORTED)
+	if (!mb_enable_debug ||
+	    (EXT4_SB(sb)->s_mount_flags & EXT4_MF_FS_ABORTED))
 		return;
 
 	printk(KERN_ERR "EXT4-fs: Can't allocate:"
@@ -4753,7 +4759,8 @@ static int ext4_trim_extent(struct super_block *sb, int start, int count,
  * bitmap. Then issue a TRIM command on this extent and free the extent in
  * the group buddy bitmap. This is done until whole group is scanned.
  */
-ext4_grpblk_t ext4_trim_all_free(struct super_block *sb, struct ext4_buddy *e4b,
+static ext4_grpblk_t
+ext4_trim_all_free(struct super_block *sb, struct ext4_buddy *e4b,
 		ext4_grpblk_t start, ext4_grpblk_t max, ext4_grpblk_t minblocks)
 {
 	void *bitmap;
@@ -4863,10 +4870,15 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
 			break;
 		}
 
-		if (len >= EXT4_BLOCKS_PER_GROUP(sb))
-			len -= (EXT4_BLOCKS_PER_GROUP(sb) - first_block);
-		else
+		/*
+		 * For all the groups except the last one, last block will
+		 * always be EXT4_BLOCKS_PER_GROUP(sb), so we only need to
+		 * change it for the last group in which case start +
+		 * len < EXT4_BLOCKS_PER_GROUP(sb).
+		 */
+		if (first_block + len < EXT4_BLOCKS_PER_GROUP(sb))
 			last_block = first_block + len;
+		len -= last_block - first_block;
 
 		if (e4b.bd_info->bb_free >= minlen) {
 			cnt = ext4_trim_all_free(sb, &e4b, first_block,
diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h
index b619322..22bd4d7 100644
--- a/fs/ext4/mballoc.h
+++ b/fs/ext4/mballoc.h
@@ -169,7 +169,7 @@ struct ext4_allocation_context {
 	/* original request */
 	struct ext4_free_extent ac_o_ex;
 
-	/* goal request (after normalization) */
+	/* goal request (normalized ac_o_ex) */
 	struct ext4_free_extent ac_g_ex;
 
 	/* the best found extent */
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index b0a126f..d1bafa5 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -263,7 +263,7 @@ static int free_dind_blocks(handle_t *handle,
 	for (i = 0; i < max_entries; i++) {
 		if (tmp_idata[i]) {
 			extend_credit_for_blkdel(handle, inode);
-			ext4_free_blocks(handle, inode, 0,
+			ext4_free_blocks(handle, inode, NULL,
 					 le32_to_cpu(tmp_idata[i]), 1,
 					 EXT4_FREE_BLOCKS_METADATA |
 					 EXT4_FREE_BLOCKS_FORGET);
@@ -271,7 +271,7 @@ static int free_dind_blocks(handle_t *handle,
 	}
 	put_bh(bh);
 	extend_credit_for_blkdel(handle, inode);
-	ext4_free_blocks(handle, inode, 0, le32_to_cpu(i_data), 1,
+	ext4_free_blocks(handle, inode, NULL, le32_to_cpu(i_data), 1,
 			 EXT4_FREE_BLOCKS_METADATA |
 			 EXT4_FREE_BLOCKS_FORGET);
 	return 0;
@@ -302,7 +302,7 @@ static int free_tind_blocks(handle_t *handle,
 	}
 	put_bh(bh);
 	extend_credit_for_blkdel(handle, inode);
-	ext4_free_blocks(handle, inode, 0, le32_to_cpu(i_data), 1,
+	ext4_free_blocks(handle, inode, NULL, le32_to_cpu(i_data), 1,
 			 EXT4_FREE_BLOCKS_METADATA |
 			 EXT4_FREE_BLOCKS_FORGET);
 	return 0;
@@ -315,7 +315,7 @@ static int free_ind_block(handle_t *handle, struct inode *inode, __le32 *i_data)
 	/* ei->i_data[EXT4_IND_BLOCK] */
 	if (i_data[0]) {
 		extend_credit_for_blkdel(handle, inode);
-		ext4_free_blocks(handle, inode, 0,
+		ext4_free_blocks(handle, inode, NULL,
 				le32_to_cpu(i_data[0]), 1,
 				 EXT4_FREE_BLOCKS_METADATA |
 				 EXT4_FREE_BLOCKS_FORGET);
@@ -428,7 +428,7 @@ static int free_ext_idx(handle_t *handle, struct inode *inode,
 	}
 	put_bh(bh);
 	extend_credit_for_blkdel(handle, inode);
-	ext4_free_blocks(handle, inode, 0, block, 1,
+	ext4_free_blocks(handle, inode, NULL, block, 1,
 			 EXT4_FREE_BLOCKS_METADATA | EXT4_FREE_BLOCKS_FORGET);
 	return retval;
 }
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index e781b7e..67fd0b0 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -40,6 +40,7 @@
 #include "xattr.h"
 #include "acl.h"
 
+#include <trace/events/ext4.h>
 /*
  * define how far ahead to read directories while searching them.
  */
@@ -2183,6 +2184,7 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry)
 	struct ext4_dir_entry_2 *de;
 	handle_t *handle;
 
+	trace_ext4_unlink_enter(dir, dentry);
 	/* Initialize quotas before so that eventual writes go
 	 * in separate transaction */
 	dquot_initialize(dir);
@@ -2228,6 +2230,7 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry)
 end_unlink:
 	ext4_journal_stop(handle);
 	brelse(bh);
+	trace_ext4_unlink_exit(dentry, retval);
 	return retval;
 }
 
@@ -2402,6 +2405,10 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
 		if (!new_inode && new_dir != old_dir &&
 		    EXT4_DIR_LINK_MAX(new_dir))
 			goto end_rename;
+		BUFFER_TRACE(dir_bh, "get_write_access");
+		retval = ext4_journal_get_write_access(handle, dir_bh);
+		if (retval)
+			goto end_rename;
 	}
 	if (!new_bh) {
 		retval = ext4_add_entry(handle, new_dentry, old_inode);
@@ -2409,7 +2416,9 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
 			goto end_rename;
 	} else {
 		BUFFER_TRACE(new_bh, "get write access");
-		ext4_journal_get_write_access(handle, new_bh);
+		retval = ext4_journal_get_write_access(handle, new_bh);
+		if (retval)
+			goto end_rename;
 		new_de->inode = cpu_to_le32(old_inode->i_ino);
 		if (EXT4_HAS_INCOMPAT_FEATURE(new_dir->i_sb,
 					      EXT4_FEATURE_INCOMPAT_FILETYPE))
@@ -2470,8 +2479,6 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
 	old_dir->i_ctime = old_dir->i_mtime = ext4_current_time(old_dir);
 	ext4_update_dx_flag(old_dir);
 	if (dir_bh) {
-		BUFFER_TRACE(dir_bh, "get_write_access");
-		ext4_journal_get_write_access(handle, dir_bh);
 		PARENT_INO(dir_bh->b_data, new_dir->i_sb->s_blocksize) =
 						cpu_to_le32(new_dir->i_ino);
 		BUFFER_TRACE(dir_bh, "call ext4_handle_dirty_metadata");
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 955cc30..b6dbd05 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -259,6 +259,11 @@ static void ext4_end_bio(struct bio *bio, int error)
 			     bi_sector >> (inode->i_blkbits - 9));
 	}
 
+	if (!(io_end->flag & EXT4_IO_END_UNWRITTEN)) {
+		ext4_free_io_end(io_end);
+		return;
+	}
+
 	/* Add the io_end to per-inode completed io list*/
 	spin_lock_irqsave(&EXT4_I(inode)->i_completed_io_lock, flags);
 	list_add_tail(&io_end->list, &EXT4_I(inode)->i_completed_io_list);
@@ -279,9 +284,9 @@ void ext4_io_submit(struct ext4_io_submit *io)
 		BUG_ON(bio_flagged(io->io_bio, BIO_EOPNOTSUPP));
 		bio_put(io->io_bio);
 	}
-	io->io_bio = 0;
+	io->io_bio = NULL;
 	io->io_op = 0;
-	io->io_end = 0;
+	io->io_end = NULL;
 }
 
 static int io_submit_init(struct ext4_io_submit *io,
@@ -310,8 +315,7 @@ static int io_submit_init(struct ext4_io_submit *io,
 	io_end->offset = (page->index << PAGE_CACHE_SHIFT) + bh_offset(bh);
 
 	io->io_bio = bio;
-	io->io_op = (wbc->sync_mode == WB_SYNC_ALL ?
-			WRITE_SYNC_PLUG : WRITE);
+	io->io_op = (wbc->sync_mode == WB_SYNC_ALL ?  WRITE_SYNC : WRITE);
 	io->io_next_block = bh->b_blocknr;
 	return 0;
 }
@@ -381,8 +385,6 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
 
 	BUG_ON(!PageLocked(page));
 	BUG_ON(PageWriteback(page));
-	set_page_writeback(page);
-	ClearPageError(page);
 
 	io_page = kmem_cache_alloc(io_page_cachep, GFP_NOFS);
 	if (!io_page) {
@@ -393,6 +395,8 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
 	io_page->p_page = page;
 	atomic_set(&io_page->p_count, 1);
 	get_page(page);
+	set_page_writeback(page);
+	ClearPageError(page);
 
 	for (bh = head = page_buffers(page), block_start = 0;
 	     bh != head || !block_start;
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 3ecc6e4..80bbc9c 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -230,7 +230,7 @@ static int setup_new_group_blocks(struct super_block *sb,
 	}
 
 	/* Zero out all of the reserved backup group descriptor table blocks */
-	ext4_debug("clear inode table blocks %#04llx -> %#04llx\n",
+	ext4_debug("clear inode table blocks %#04llx -> %#04lx\n",
 			block, sbi->s_itb_per_group);
 	err = sb_issue_zeroout(sb, gdblocks + start + 1, reserved_gdb,
 			       GFP_NOFS);
@@ -248,7 +248,7 @@ static int setup_new_group_blocks(struct super_block *sb,
 
 	/* Zero out all of the inode table blocks */
 	block = input->inode_table;
-	ext4_debug("clear inode table blocks %#04llx -> %#04llx\n",
+	ext4_debug("clear inode table blocks %#04llx -> %#04lx\n",
 			block, sbi->s_itb_per_group);
 	err = sb_issue_zeroout(sb, block, sbi->s_itb_per_group, GFP_NOFS);
 	if (err)
@@ -499,12 +499,12 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
 	return err;
 
 exit_inode:
-	/* ext4_journal_release_buffer(handle, iloc.bh); */
+	/* ext4_handle_release_buffer(handle, iloc.bh); */
 	brelse(iloc.bh);
 exit_dindj:
-	/* ext4_journal_release_buffer(handle, dind); */
+	/* ext4_handle_release_buffer(handle, dind); */
 exit_sbh:
-	/* ext4_journal_release_buffer(handle, EXT4_SB(sb)->s_sbh); */
+	/* ext4_handle_release_buffer(handle, EXT4_SB(sb)->s_sbh); */
 exit_dind:
 	brelse(dind);
 exit_bh:
@@ -586,7 +586,7 @@ static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
 			/*
 			int j;
 			for (j = 0; j < i; j++)
-				ext4_journal_release_buffer(handle, primary[j]);
+				ext4_handle_release_buffer(handle, primary[j]);
 			 */
 			goto exit_bh;
 		}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 203f9e4..22546ad 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -54,9 +54,9 @@
 
 static struct proc_dir_entry *ext4_proc_root;
 static struct kset *ext4_kset;
-struct ext4_lazy_init *ext4_li_info;
-struct mutex ext4_li_mtx;
-struct ext4_features *ext4_feat;
+static struct ext4_lazy_init *ext4_li_info;
+static struct mutex ext4_li_mtx;
+static struct ext4_features *ext4_feat;
 
 static int ext4_load_journal(struct super_block *, struct ext4_super_block *,
 			     unsigned long journal_devnum);
@@ -75,6 +75,7 @@ static void ext4_write_super(struct super_block *sb);
 static int ext4_freeze(struct super_block *sb);
 static struct dentry *ext4_mount(struct file_system_type *fs_type, int flags,
 		       const char *dev_name, void *data);
+static int ext4_feature_set_ok(struct super_block *sb, int readonly);
 static void ext4_destroy_lazyinit_thread(void);
 static void ext4_unregister_li_request(struct super_block *sb);
 static void ext4_clear_request_list(void);
@@ -594,7 +595,7 @@ __acquires(bitlock)
 
 	vaf.fmt = fmt;
 	vaf.va = &args;
-	printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: group %u",
+	printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: group %u, ",
 	       sb->s_id, function, line, grp);
 	if (ino)
 		printk(KERN_CONT "inode %lu: ", ino);
@@ -997,13 +998,10 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
 	if (test_opt(sb, OLDALLOC))
 		seq_puts(seq, ",oldalloc");
 #ifdef CONFIG_EXT4_FS_XATTR
-	if (test_opt(sb, XATTR_USER) &&
-		!(def_mount_opts & EXT4_DEFM_XATTR_USER))
+	if (test_opt(sb, XATTR_USER))
 		seq_puts(seq, ",user_xattr");
-	if (!test_opt(sb, XATTR_USER) &&
-	    (def_mount_opts & EXT4_DEFM_XATTR_USER)) {
+	if (!test_opt(sb, XATTR_USER))
 		seq_puts(seq, ",nouser_xattr");
-	}
 #endif
 #ifdef CONFIG_EXT4_FS_POSIX_ACL
 	if (test_opt(sb, POSIX_ACL) && !(def_mount_opts & EXT4_DEFM_ACL))
@@ -1041,8 +1039,8 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
 	    !(def_mount_opts & EXT4_DEFM_NODELALLOC))
 		seq_puts(seq, ",nodelalloc");
 
-	if (test_opt(sb, MBLK_IO_SUBMIT))
-		seq_puts(seq, ",mblk_io_submit");
+	if (!test_opt(sb, MBLK_IO_SUBMIT))
+		seq_puts(seq, ",nomblk_io_submit");
 	if (sbi->s_stripe)
 		seq_printf(seq, ",stripe=%lu", sbi->s_stripe);
 	/*
@@ -1451,7 +1449,7 @@ static int parse_options(char *options, struct super_block *sb,
 		 * Initialize args struct so we know whether arg was
 		 * found; some options take optional arguments.
 		 */
-		args[0].to = args[0].from = 0;
+		args[0].to = args[0].from = NULL;
 		token = match_token(p, tokens, args);
 		switch (token) {
 		case Opt_bsd_df:
@@ -1771,7 +1769,7 @@ set_qf_format:
 				return 0;
 			if (option < 0 || option > (1 << 30))
 				return 0;
-			if (!is_power_of_2(option)) {
+			if (option && !is_power_of_2(option)) {
 				ext4_msg(sb, KERN_ERR,
 					 "EXT4-fs: inode_readahead_blks"
 					 " must be a power of 2");
@@ -2120,6 +2118,13 @@ static void ext4_orphan_cleanup(struct super_block *sb,
 		return;
 	}
 
+	/* Check if feature set would not allow a r/w mount */
+	if (!ext4_feature_set_ok(sb, 0)) {
+		ext4_msg(sb, KERN_INFO, "Skipping orphan cleanup due to "
+			 "unknown ROCOMPAT features");
+		return;
+	}
+
 	if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) {
 		if (es->s_last_orphan)
 			jbd_debug(1, "Errors on filesystem, "
@@ -2412,7 +2417,7 @@ static ssize_t inode_readahead_blks_store(struct ext4_attr *a,
 	if (parse_strtoul(buf, 0x40000000, &t))
 		return -EINVAL;
 
-	if (!is_power_of_2(t))
+	if (t && !is_power_of_2(t))
 		return -EINVAL;
 
 	sbi->s_inode_readahead_blks = t;
@@ -3095,14 +3100,14 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 	}
 	if (def_mount_opts & EXT4_DEFM_UID16)
 		set_opt(sb, NO_UID32);
+	/* xattr user namespace & acls are now defaulted on */
 #ifdef CONFIG_EXT4_FS_XATTR
-	if (def_mount_opts & EXT4_DEFM_XATTR_USER)
-		set_opt(sb, XATTR_USER);
+	set_opt(sb, XATTR_USER);
 #endif
 #ifdef CONFIG_EXT4_FS_POSIX_ACL
-	if (def_mount_opts & EXT4_DEFM_ACL)
-		set_opt(sb, POSIX_ACL);
+	set_opt(sb, POSIX_ACL);
 #endif
+	set_opt(sb, MBLK_IO_SUBMIT);
 	if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_DATA)
 		set_opt(sb, JOURNAL_DATA);
 	else if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_ORDERED)
@@ -3516,7 +3521,7 @@ no_journal:
 	 * concurrency isn't really necessary.  Limit it to 1.
 	 */
 	EXT4_SB(sb)->dio_unwritten_wq =
-		alloc_workqueue("ext4-dio-unwritten", WQ_MEM_RECLAIM, 1);
+		alloc_workqueue("ext4-dio-unwritten", WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
 	if (!EXT4_SB(sb)->dio_unwritten_wq) {
 		printk(KERN_ERR "EXT4-fs: failed to create DIO workqueue\n");
 		goto failed_mount_wq;
@@ -3531,17 +3536,16 @@ no_journal:
 	if (IS_ERR(root)) {
 		ext4_msg(sb, KERN_ERR, "get root inode failed");
 		ret = PTR_ERR(root);
+		root = NULL;
 		goto failed_mount4;
 	}
 	if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {
-		iput(root);
 		ext4_msg(sb, KERN_ERR, "corrupt root inode, run e2fsck");
 		goto failed_mount4;
 	}
 	sb->s_root = d_alloc_root(root);
 	if (!sb->s_root) {
 		ext4_msg(sb, KERN_ERR, "get root dentry failed");
-		iput(root);
 		ret = -ENOMEM;
 		goto failed_mount4;
 	}
@@ -3657,6 +3661,8 @@ cantfind_ext4:
 	goto failed_mount;
 
 failed_mount4:
+	iput(root);
+	sb->s_root = NULL;
 	ext4_msg(sb, KERN_ERR, "mount failed");
 	destroy_workqueue(EXT4_SB(sb)->dio_unwritten_wq);
 failed_mount_wq:
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index fc32176..b545ca1 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -735,7 +735,7 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
 			int offset = (char *)s->here - bs->bh->b_data;
 
 			unlock_buffer(bs->bh);
-			jbd2_journal_release_buffer(handle, bs->bh);
+			ext4_handle_release_buffer(handle, bs->bh);
 			if (ce) {
 				mb_cache_entry_release(ce);
 				ce = NULL;
@@ -833,7 +833,7 @@ inserted:
 			new_bh = sb_getblk(sb, block);
 			if (!new_bh) {
 getblk_failed:
-				ext4_free_blocks(handle, inode, 0, block, 1,
+				ext4_free_blocks(handle, inode, NULL, block, 1,
 						 EXT4_FREE_BLOCKS_METADATA);
 				error = -EIO;
 				goto cleanup;
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 0e277ec..8d68690 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -236,7 +236,6 @@ static const struct address_space_operations fat_aops = {
 	.readpages	= fat_readpages,
 	.writepage	= fat_writepage,
 	.writepages	= fat_writepages,
-	.sync_page	= block_sync_page,
 	.write_begin	= fat_write_begin,
 	.write_end	= fat_write_end,
 	.direct_IO	= fat_direct_IO,
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 6c82e5b..22764c7 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -159,7 +159,7 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
 
 	/* O_NOATIME can only be set by the owner or superuser */
 	if ((arg & O_NOATIME) && !(filp->f_flags & O_NOATIME))
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EPERM;
 
 	/* required for strict SunOS emulation */
diff --git a/fs/fifo.c b/fs/fifo.c
index 4e303c2..b1a524d 100644
--- a/fs/fifo.c
+++ b/fs/fifo.c
@@ -66,8 +66,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
 				/* suppress POLLHUP until we have
 				 * seen a writer */
 				filp->f_version = pipe->w_counter;
-			} else 
-			{
+			} else {
 				wait_for_partner(inode, &pipe->w_counter);
 				if(signal_pending(current))
 					goto err_rd;
diff --git a/fs/freevxfs/vxfs_subr.c b/fs/freevxfs/vxfs_subr.c
index 1429f3ae..5d318c4 100644
--- a/fs/freevxfs/vxfs_subr.c
+++ b/fs/freevxfs/vxfs_subr.c
@@ -44,7 +44,6 @@ static sector_t		vxfs_bmap(struct address_space *, sector_t);
 const struct address_space_operations vxfs_aops = {
 	.readpage =		vxfs_readpage,
 	.bmap =			vxfs_bmap,
-	.sync_page =		block_sync_page,
 };
 
 inline void
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 59c6e49..b5ed541 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -176,6 +176,17 @@ void bdi_start_background_writeback(struct backing_dev_info *bdi)
 }
 
 /*
+ * Remove the inode from the writeback list it is on.
+ */
+void inode_wb_list_del(struct inode *inode)
+{
+	spin_lock(&inode_wb_list_lock);
+	list_del_init(&inode->i_wb_list);
+	spin_unlock(&inode_wb_list_lock);
+}
+
+
+/*
  * Redirty an inode: set its when-it-was dirtied timestamp and move it to the
  * furthest end of its superblock's dirty-inode list.
  *
@@ -188,6 +199,7 @@ static void redirty_tail(struct inode *inode)
 {
 	struct bdi_writeback *wb = &inode_to_bdi(inode)->wb;
 
+	assert_spin_locked(&inode_wb_list_lock);
 	if (!list_empty(&wb->b_dirty)) {
 		struct inode *tail;
 
@@ -205,14 +217,17 @@ static void requeue_io(struct inode *inode)
 {
 	struct bdi_writeback *wb = &inode_to_bdi(inode)->wb;
 
+	assert_spin_locked(&inode_wb_list_lock);
 	list_move(&inode->i_wb_list, &wb->b_more_io);
 }
 
 static void inode_sync_complete(struct inode *inode)
 {
 	/*
-	 * Prevent speculative execution through spin_unlock(&inode_lock);
+	 * Prevent speculative execution through
+	 * spin_unlock(&inode_wb_list_lock);
 	 */
+
 	smp_mb();
 	wake_up_bit(&inode->i_state, __I_SYNC);
 }
@@ -286,6 +301,7 @@ static void move_expired_inodes(struct list_head *delaying_queue,
  */
 static void queue_io(struct bdi_writeback *wb, unsigned long *older_than_this)
 {
+	assert_spin_locked(&inode_wb_list_lock);
 	list_splice_init(&wb->b_more_io, &wb->b_io);
 	move_expired_inodes(&wb->b_dirty, &wb->b_io, older_than_this);
 }
@@ -306,25 +322,25 @@ static void inode_wait_for_writeback(struct inode *inode)
 	wait_queue_head_t *wqh;
 
 	wqh = bit_waitqueue(&inode->i_state, __I_SYNC);
-	 while (inode->i_state & I_SYNC) {
-		spin_unlock(&inode_lock);
+	while (inode->i_state & I_SYNC) {
+		spin_unlock(&inode->i_lock);
+		spin_unlock(&inode_wb_list_lock);
 		__wait_on_bit(wqh, &wq, inode_wait, TASK_UNINTERRUPTIBLE);
-		spin_lock(&inode_lock);
+		spin_lock(&inode_wb_list_lock);
+		spin_lock(&inode->i_lock);
 	}
 }
 
 /*
- * Write out an inode's dirty pages.  Called under inode_lock.  Either the
- * caller has ref on the inode (either via __iget or via syscall against an fd)
- * or the inode has I_WILL_FREE set (via generic_forget_inode)
+ * Write out an inode's dirty pages.  Called under inode_wb_list_lock and
+ * inode->i_lock.  Either the caller has an active reference on the inode or
+ * the inode has I_WILL_FREE set.
  *
  * If `wait' is set, wait on the writeout.
  *
  * The whole writeout design is quite complex and fragile.  We want to avoid
  * starvation of particular inodes when others are being redirtied, prevent
  * livelocks, etc.
- *
- * Called under inode_lock.
  */
 static int
 writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
@@ -333,6 +349,9 @@ writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
 	unsigned dirty;
 	int ret;
 
+	assert_spin_locked(&inode_wb_list_lock);
+	assert_spin_locked(&inode->i_lock);
+
 	if (!atomic_read(&inode->i_count))
 		WARN_ON(!(inode->i_state & (I_WILL_FREE|I_FREEING)));
 	else
@@ -363,7 +382,8 @@ writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
 	/* Set I_SYNC, reset I_DIRTY_PAGES */
 	inode->i_state |= I_SYNC;
 	inode->i_state &= ~I_DIRTY_PAGES;
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode->i_lock);
+	spin_unlock(&inode_wb_list_lock);
 
 	ret = do_writepages(mapping, wbc);
 
@@ -383,10 +403,10 @@ writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
 	 * due to delalloc, clear dirty metadata flags right before
 	 * write_inode()
 	 */
-	spin_lock(&inode_lock);
+	spin_lock(&inode->i_lock);
 	dirty = inode->i_state & I_DIRTY;
 	inode->i_state &= ~(I_DIRTY_SYNC | I_DIRTY_DATASYNC);
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode->i_lock);
 	/* Don't write the inode if only I_DIRTY_PAGES was set */
 	if (dirty & (I_DIRTY_SYNC | I_DIRTY_DATASYNC)) {
 		int err = write_inode(inode, wbc);
@@ -394,7 +414,8 @@ writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
 			ret = err;
 	}
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode_wb_list_lock);
+	spin_lock(&inode->i_lock);
 	inode->i_state &= ~I_SYNC;
 	if (!(inode->i_state & I_FREEING)) {
 		if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
@@ -506,7 +527,9 @@ static int writeback_sb_inodes(struct super_block *sb, struct bdi_writeback *wb,
 		 * kind does not need peridic writeout yet, and for the latter
 		 * kind writeout is handled by the freer.
 		 */
+		spin_lock(&inode->i_lock);
 		if (inode->i_state & (I_NEW | I_FREEING | I_WILL_FREE)) {
+			spin_unlock(&inode->i_lock);
 			requeue_io(inode);
 			continue;
 		}
@@ -515,10 +538,13 @@ static int writeback_sb_inodes(struct super_block *sb, struct bdi_writeback *wb,
 		 * Was this inode dirtied after sync_sb_inodes was called?
 		 * This keeps sync from extra jobs and livelock.
 		 */
-		if (inode_dirtied_after(inode, wbc->wb_start))
+		if (inode_dirtied_after(inode, wbc->wb_start)) {
+			spin_unlock(&inode->i_lock);
 			return 1;
+		}
 
 		__iget(inode);
+
 		pages_skipped = wbc->pages_skipped;
 		writeback_single_inode(inode, wbc);
 		if (wbc->pages_skipped != pages_skipped) {
@@ -528,10 +554,11 @@ static int writeback_sb_inodes(struct super_block *sb, struct bdi_writeback *wb,
 			 */
 			redirty_tail(inode);
 		}
-		spin_unlock(&inode_lock);
+		spin_unlock(&inode->i_lock);
+		spin_unlock(&inode_wb_list_lock);
 		iput(inode);
 		cond_resched();
-		spin_lock(&inode_lock);
+		spin_lock(&inode_wb_list_lock);
 		if (wbc->nr_to_write <= 0) {
 			wbc->more_io = 1;
 			return 1;
@@ -550,7 +577,7 @@ void writeback_inodes_wb(struct bdi_writeback *wb,
 
 	if (!wbc->wb_start)
 		wbc->wb_start = jiffies; /* livelock avoidance */
-	spin_lock(&inode_lock);
+	spin_lock(&inode_wb_list_lock);
 	if (!wbc->for_kupdate || list_empty(&wb->b_io))
 		queue_io(wb, wbc->older_than_this);
 
@@ -568,7 +595,7 @@ void writeback_inodes_wb(struct bdi_writeback *wb,
 		if (ret)
 			break;
 	}
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode_wb_list_lock);
 	/* Leave any unwritten inodes on b_io */
 }
 
@@ -577,11 +604,11 @@ static void __writeback_inodes_sb(struct super_block *sb,
 {
 	WARN_ON(!rwsem_is_locked(&sb->s_umount));
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode_wb_list_lock);
 	if (!wbc->for_kupdate || list_empty(&wb->b_io))
 		queue_io(wb, wbc->older_than_this);
 	writeback_sb_inodes(sb, wb, wbc, true);
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode_wb_list_lock);
 }
 
 /*
@@ -720,13 +747,15 @@ static long wb_writeback(struct bdi_writeback *wb,
 		 * become available for writeback. Otherwise
 		 * we'll just busyloop.
 		 */
-		spin_lock(&inode_lock);
+		spin_lock(&inode_wb_list_lock);
 		if (!list_empty(&wb->b_more_io))  {
 			inode = wb_inode(wb->b_more_io.prev);
 			trace_wbc_writeback_wait(&wbc, wb->bdi);
+			spin_lock(&inode->i_lock);
 			inode_wait_for_writeback(inode);
+			spin_unlock(&inode->i_lock);
 		}
-		spin_unlock(&inode_lock);
+		spin_unlock(&inode_wb_list_lock);
 	}
 
 	return wrote;
@@ -992,7 +1021,6 @@ void __mark_inode_dirty(struct inode *inode, int flags)
 {
 	struct super_block *sb = inode->i_sb;
 	struct backing_dev_info *bdi = NULL;
-	bool wakeup_bdi = false;
 
 	/*
 	 * Don't do this for I_DIRTY_PAGES - that doesn't actually
@@ -1016,7 +1044,7 @@ void __mark_inode_dirty(struct inode *inode, int flags)
 	if (unlikely(block_dump))
 		block_dump___mark_inode_dirty(inode);
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode->i_lock);
 	if ((inode->i_state & flags) != flags) {
 		const int was_dirty = inode->i_state & I_DIRTY;
 
@@ -1028,7 +1056,7 @@ void __mark_inode_dirty(struct inode *inode, int flags)
 		 * superblock list, based upon its state.
 		 */
 		if (inode->i_state & I_SYNC)
-			goto out;
+			goto out_unlock_inode;
 
 		/*
 		 * Only add valid (hashed) inodes to the superblock's
@@ -1036,16 +1064,17 @@ void __mark_inode_dirty(struct inode *inode, int flags)
 		 */
 		if (!S_ISBLK(inode->i_mode)) {
 			if (inode_unhashed(inode))
-				goto out;
+				goto out_unlock_inode;
 		}
 		if (inode->i_state & I_FREEING)
-			goto out;
+			goto out_unlock_inode;
 
 		/*
 		 * If the inode was already on b_dirty/b_io/b_more_io, don't
 		 * reposition it (that would break b_dirty time-ordering).
 		 */
 		if (!was_dirty) {
+			bool wakeup_bdi = false;
 			bdi = inode_to_bdi(inode);
 
 			if (bdi_cap_writeback_dirty(bdi)) {
@@ -1062,15 +1091,20 @@ void __mark_inode_dirty(struct inode *inode, int flags)
 					wakeup_bdi = true;
 			}
 
+			spin_unlock(&inode->i_lock);
+			spin_lock(&inode_wb_list_lock);
 			inode->dirtied_when = jiffies;
 			list_move(&inode->i_wb_list, &bdi->wb.b_dirty);
+			spin_unlock(&inode_wb_list_lock);
+
+			if (wakeup_bdi)
+				bdi_wakeup_thread_delayed(bdi);
+			return;
 		}
 	}
-out:
-	spin_unlock(&inode_lock);
+out_unlock_inode:
+	spin_unlock(&inode->i_lock);
 
-	if (wakeup_bdi)
-		bdi_wakeup_thread_delayed(bdi);
 }
 EXPORT_SYMBOL(__mark_inode_dirty);
 
@@ -1101,7 +1135,7 @@ static void wait_sb_inodes(struct super_block *sb)
 	 */
 	WARN_ON(!rwsem_is_locked(&sb->s_umount));
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode_sb_list_lock);
 
 	/*
 	 * Data integrity sync. Must wait for all pages under writeback,
@@ -1111,22 +1145,25 @@ static void wait_sb_inodes(struct super_block *sb)
 	 * we still have to wait for that writeout.
 	 */
 	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
-		struct address_space *mapping;
+		struct address_space *mapping = inode->i_mapping;
 
-		if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW))
-			continue;
-		mapping = inode->i_mapping;
-		if (mapping->nrpages == 0)
+		spin_lock(&inode->i_lock);
+		if ((inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) ||
+		    (mapping->nrpages == 0)) {
+			spin_unlock(&inode->i_lock);
 			continue;
+		}
 		__iget(inode);
-		spin_unlock(&inode_lock);
+		spin_unlock(&inode->i_lock);
+		spin_unlock(&inode_sb_list_lock);
+
 		/*
-		 * We hold a reference to 'inode' so it couldn't have
-		 * been removed from s_inodes list while we dropped the
-		 * inode_lock.  We cannot iput the inode now as we can
-		 * be holding the last reference and we cannot iput it
-		 * under inode_lock. So we keep the reference and iput
-		 * it later.
+		 * We hold a reference to 'inode' so it couldn't have been
+		 * removed from s_inodes list while we dropped the
+		 * inode_sb_list_lock.  We cannot iput the inode now as we can
+		 * be holding the last reference and we cannot iput it under
+		 * inode_sb_list_lock. So we keep the reference and iput it
+		 * later.
 		 */
 		iput(old_inode);
 		old_inode = inode;
@@ -1135,9 +1172,9 @@ static void wait_sb_inodes(struct super_block *sb)
 
 		cond_resched();
 
-		spin_lock(&inode_lock);
+		spin_lock(&inode_sb_list_lock);
 	}
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode_sb_list_lock);
 	iput(old_inode);
 }
 
@@ -1271,9 +1308,11 @@ int write_inode_now(struct inode *inode, int sync)
 		wbc.nr_to_write = 0;
 
 	might_sleep();
-	spin_lock(&inode_lock);
+	spin_lock(&inode_wb_list_lock);
+	spin_lock(&inode->i_lock);
 	ret = writeback_single_inode(inode, &wbc);
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode->i_lock);
+	spin_unlock(&inode_wb_list_lock);
 	if (sync)
 		inode_sync_wait(inode);
 	return ret;
@@ -1295,9 +1334,11 @@ int sync_inode(struct inode *inode, struct writeback_control *wbc)
 {
 	int ret;
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode_wb_list_lock);
+	spin_lock(&inode->i_lock);
 	ret = writeback_single_inode(inode, wbc);
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode->i_lock);
+	spin_unlock(&inode_wb_list_lock);
 	return ret;
 }
 EXPORT_SYMBOL(sync_inode);
diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
index 7c39b885..b6cca47 100644
--- a/fs/fuse/cuse.c
+++ b/fs/fuse/cuse.c
@@ -305,7 +305,7 @@ static void cuse_gendev_release(struct device *dev)
 static void cuse_process_init_reply(struct fuse_conn *fc, struct fuse_req *req)
 {
 	struct cuse_conn *cc = fc_to_cc(fc);
-	struct cuse_init_out *arg = &req->misc.cuse_init_out;
+	struct cuse_init_out *arg = req->out.args[0].value;
 	struct page *page = req->pages[0];
 	struct cuse_devinfo devinfo = { };
 	struct device *dev;
@@ -384,6 +384,7 @@ static void cuse_process_init_reply(struct fuse_conn *fc, struct fuse_req *req)
 	dev_set_uevent_suppress(dev, 0);
 	kobject_uevent(&dev->kobj, KOBJ_ADD);
 out:
+	kfree(arg);
 	__free_page(page);
 	return;
 
@@ -405,6 +406,7 @@ static int cuse_send_init(struct cuse_conn *cc)
 	struct page *page;
 	struct fuse_conn *fc = &cc->fc;
 	struct cuse_init_in *arg;
+	void *outarg;
 
 	BUILD_BUG_ON(CUSE_INIT_INFO_MAX > PAGE_SIZE);
 
@@ -419,6 +421,10 @@ static int cuse_send_init(struct cuse_conn *cc)
 	if (!page)
 		goto err_put_req;
 
+	outarg = kzalloc(sizeof(struct cuse_init_out), GFP_KERNEL);
+	if (!outarg)
+		goto err_free_page;
+
 	arg = &req->misc.cuse_init_in;
 	arg->major = FUSE_KERNEL_VERSION;
 	arg->minor = FUSE_KERNEL_MINOR_VERSION;
@@ -429,7 +435,7 @@ static int cuse_send_init(struct cuse_conn *cc)
 	req->in.args[0].value = arg;
 	req->out.numargs = 2;
 	req->out.args[0].size = sizeof(struct cuse_init_out);
-	req->out.args[0].value = &req->misc.cuse_init_out;
+	req->out.args[0].value = outarg;
 	req->out.args[1].size = CUSE_INIT_INFO_MAX;
 	req->out.argvar = 1;
 	req->out.argpages = 1;
@@ -440,6 +446,8 @@ static int cuse_send_init(struct cuse_conn *cc)
 
 	return 0;
 
+err_free_page:
+	__free_page(page);
 err_put_req:
 	fuse_put_request(fc, req);
 err:
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index cf8d28d..640fc22 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -737,14 +737,12 @@ static int fuse_try_move_page(struct fuse_copy_state *cs, struct page **pagep)
 	if (WARN_ON(PageMlocked(oldpage)))
 		goto out_fallback_unlock;
 
-	remove_from_page_cache(oldpage);
-	page_cache_release(oldpage);
-
-	err = add_to_page_cache_locked(newpage, mapping, index, GFP_KERNEL);
+	err = replace_page_cache_page(oldpage, newpage, GFP_KERNEL);
 	if (err) {
-		printk(KERN_WARNING "fuse_try_move_page: failed to add page");
-		goto out_fallback_unlock;
+		unlock_page(newpage);
+		return err;
 	}
+
 	page_cache_get(newpage);
 
 	if (!(buf->flags & PIPE_BUF_FLAG_LRU))
@@ -1910,6 +1908,21 @@ __acquires(fc->lock)
 		kfree(dequeue_forget(fc, 1, NULL));
 }
 
+static void end_polls(struct fuse_conn *fc)
+{
+	struct rb_node *p;
+
+	p = rb_first(&fc->polled_files);
+
+	while (p) {
+		struct fuse_file *ff;
+		ff = rb_entry(p, struct fuse_file, polled_node);
+		wake_up_interruptible_all(&ff->poll_wait);
+
+		p = rb_next(p);
+	}
+}
+
 /*
  * Abort all requests.
  *
@@ -1937,6 +1950,7 @@ void fuse_abort_conn(struct fuse_conn *fc)
 		fc->blocked = 0;
 		end_io_requests(fc);
 		end_queued_requests(fc);
+		end_polls(fc);
 		wake_up_all(&fc->waitq);
 		wake_up_all(&fc->blocked_waitq);
 		kill_fasync(&fc->fasync, SIGIO, POLL_IN);
@@ -1953,6 +1967,7 @@ int fuse_dev_release(struct inode *inode, struct file *file)
 		fc->connected = 0;
 		fc->blocked = 0;
 		end_queued_requests(fc);
+		end_polls(fc);
 		wake_up_all(&fc->blocked_waitq);
 		spin_unlock(&fc->lock);
 		fuse_conn_put(fc);
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 8bd0ef9..c6ba49b 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -158,10 +158,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
 {
 	struct inode *inode;
 
-	if (nd && nd->flags & LOOKUP_RCU)
-		return -ECHILD;
-
-	inode = entry->d_inode;
+	inode = ACCESS_ONCE(entry->d_inode);
 	if (inode && is_bad_inode(inode))
 		return 0;
 	else if (fuse_dentry_time(entry) < get_jiffies_64()) {
@@ -177,6 +174,9 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
 		if (!inode)
 			return 0;
 
+		if (nd->flags & LOOKUP_RCU)
+			return -ECHILD;
+
 		fc = get_fuse_conn(inode);
 		req = fuse_get_req(fc);
 		if (IS_ERR(req))
@@ -970,6 +970,14 @@ static int fuse_access(struct inode *inode, int mask)
 	return err;
 }
 
+static int fuse_perm_getattr(struct inode *inode, int flags)
+{
+	if (flags & IPERM_FLAG_RCU)
+		return -ECHILD;
+
+	return fuse_do_getattr(inode, NULL, NULL);
+}
+
 /*
  * Check permission.  The two basic access models of FUSE are:
  *
@@ -989,9 +997,6 @@ static int fuse_permission(struct inode *inode, int mask, unsigned int flags)
 	bool refreshed = false;
 	int err = 0;
 
-	if (flags & IPERM_FLAG_RCU)
-		return -ECHILD;
-
 	if (!fuse_allow_task(fc, current))
 		return -EACCES;
 
@@ -1000,9 +1005,15 @@ static int fuse_permission(struct inode *inode, int mask, unsigned int flags)
 	 */
 	if ((fc->flags & FUSE_DEFAULT_PERMISSIONS) ||
 	    ((mask & MAY_EXEC) && S_ISREG(inode->i_mode))) {
-		err = fuse_update_attributes(inode, NULL, NULL, &refreshed);
-		if (err)
-			return err;
+		struct fuse_inode *fi = get_fuse_inode(inode);
+
+		if (fi->i_time < get_jiffies_64()) {
+			refreshed = true;
+
+			err = fuse_perm_getattr(inode, flags);
+			if (err)
+				return err;
+		}
 	}
 
 	if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
@@ -1012,7 +1023,7 @@ static int fuse_permission(struct inode *inode, int mask, unsigned int flags)
 		   attributes.  This is also needed, because the root
 		   node will at first have no permissions */
 		if (err == -EACCES && !refreshed) {
-			err = fuse_do_getattr(inode, NULL, NULL);
+			err = fuse_perm_getattr(inode, flags);
 			if (!err)
 				err = generic_permission(inode, mask,
 							flags, NULL);
@@ -1023,13 +1034,16 @@ static int fuse_permission(struct inode *inode, int mask, unsigned int flags)
 		   noticed immediately, only after the attribute
 		   timeout has expired */
 	} else if (mask & (MAY_ACCESS | MAY_CHDIR)) {
+		if (flags & IPERM_FLAG_RCU)
+			return -ECHILD;
+
 		err = fuse_access(inode, mask);
 	} else if ((mask & MAY_EXEC) && S_ISREG(inode->i_mode)) {
 		if (!(inode->i_mode & S_IXUGO)) {
 			if (refreshed)
 				return -EACCES;
 
-			err = fuse_do_getattr(inode, NULL, NULL);
+			err = fuse_perm_getattr(inode, flags);
 			if (!err && !(inode->i_mode & S_IXUGO))
 				return -EACCES;
 		}
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 9e0832d..6ea0073 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -222,7 +222,7 @@ static void fuse_prepare_release(struct fuse_file *ff, int flags, int opcode)
 		rb_erase(&ff->polled_node, &fc->polled_files);
 	spin_unlock(&fc->lock);
 
-	wake_up_interruptible_sync(&ff->poll_wait);
+	wake_up_interruptible_all(&ff->poll_wait);
 
 	inarg->fh = ff->fh;
 	inarg->flags = flags;
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index d428694..b788bec 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -272,7 +272,6 @@ struct fuse_req {
 		struct fuse_init_in init_in;
 		struct fuse_init_out init_out;
 		struct cuse_init_in cuse_init_in;
-		struct cuse_init_out cuse_init_out;
 		struct {
 			struct fuse_read_in in;
 			u64 attr_ver;
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 051b1a0..cc6ec4b 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -870,7 +870,6 @@ static int fuse_bdi_init(struct fuse_conn *fc, struct super_block *sb)
 
 	fc->bdi.name = "fuse";
 	fc->bdi.ra_pages = (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
-	fc->bdi.unplug_io_fn = default_unplug_io_fn;
 	/* fuse does it's own writeback accounting */
 	fc->bdi.capabilities = BDI_CAP_NO_ACCT_WB;
 
diff --git a/fs/generic_acl.c b/fs/generic_acl.c
index 06c48a8..8f26d1a 100644
--- a/fs/generic_acl.c
+++ b/fs/generic_acl.c
@@ -74,7 +74,7 @@ generic_acl_set(struct dentry *dentry, const char *name, const void *value,
 		return -EINVAL;
 	if (S_ISLNK(inode->i_mode))
 		return -EOPNOTSUPP;
-	if (!is_owner_or_cap(inode))
+	if (!inode_owner_or_capable(inode))
 		return -EPERM;
 	if (value) {
 		acl = posix_acl_from_xattr(value, size);
diff --git a/fs/gfs2/Makefile b/fs/gfs2/Makefile
index 21f7e46..f3d23ef 100644
--- a/fs/gfs2/Makefile
+++ b/fs/gfs2/Makefile
@@ -1,4 +1,4 @@
-EXTRA_CFLAGS := -I$(src)
+ccflags-y := -I$(src)
 obj-$(CONFIG_GFS2_FS) += gfs2.o
 gfs2-y := acl.o bmap.o dir.o xattr.o glock.o \
 	glops.o inode.o log.o lops.o main.o meta_io.o \
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index aad77e4..c71995b 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -1117,7 +1117,6 @@ static const struct address_space_operations gfs2_writeback_aops = {
 	.writepages = gfs2_writeback_writepages,
 	.readpage = gfs2_readpage,
 	.readpages = gfs2_readpages,
-	.sync_page = block_sync_page,
 	.write_begin = gfs2_write_begin,
 	.write_end = gfs2_write_end,
 	.bmap = gfs2_bmap,
@@ -1133,7 +1132,6 @@ static const struct address_space_operations gfs2_ordered_aops = {
 	.writepage = gfs2_ordered_writepage,
 	.readpage = gfs2_readpage,
 	.readpages = gfs2_readpages,
-	.sync_page = block_sync_page,
 	.write_begin = gfs2_write_begin,
 	.write_end = gfs2_write_end,
 	.set_page_dirty = gfs2_set_page_dirty,
@@ -1151,7 +1149,6 @@ static const struct address_space_operations gfs2_jdata_aops = {
 	.writepages = gfs2_jdata_writepages,
 	.readpage = gfs2_readpage,
 	.readpages = gfs2_readpages,
-	.sync_page = block_sync_page,
 	.write_begin = gfs2_write_begin,
 	.write_end = gfs2_write_end,
 	.set_page_dirty = gfs2_set_page_dirty,
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 4074b95..b2682e0 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -221,7 +221,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask)
 		goto out_drop_write;
 
 	error = -EACCES;
-	if (!is_owner_or_cap(inode))
+	if (!inode_owner_or_capable(inode))
 		goto out;
 
 	error = 0;
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index e7ed31f..5b102c1 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -121,7 +121,7 @@ __acquires(&sdp->sd_ail_lock)
 			lock_buffer(bh);
 			if (test_clear_buffer_dirty(bh)) {
 				bh->b_end_io = end_buffer_write_sync;
-				submit_bh(WRITE_SYNC_PLUG, bh);
+				submit_bh(WRITE_SYNC, bh);
 			} else {
 				unlock_buffer(bh);
 				brelse(bh);
@@ -647,7 +647,7 @@ static void gfs2_ordered_write(struct gfs2_sbd *sdp)
 		lock_buffer(bh);
 		if (buffer_mapped(bh) && test_clear_buffer_dirty(bh)) {
 			bh->b_end_io = end_buffer_write_sync;
-			submit_bh(WRITE_SYNC_PLUG, bh);
+			submit_bh(WRITE_SYNC, bh);
 		} else {
 			unlock_buffer(bh);
 			brelse(bh);
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index e919abf..51d27f0 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -204,7 +204,7 @@ static void buf_lo_before_commit(struct gfs2_sbd *sdp)
 		}
 
 		gfs2_log_unlock(sdp);
-		submit_bh(WRITE_SYNC_PLUG, bh);
+		submit_bh(WRITE_SYNC, bh);
 		gfs2_log_lock(sdp);
 
 		n = 0;
@@ -214,7 +214,7 @@ static void buf_lo_before_commit(struct gfs2_sbd *sdp)
 			gfs2_log_unlock(sdp);
 			lock_buffer(bd2->bd_bh);
 			bh = gfs2_log_fake_buf(sdp, bd2->bd_bh);
-			submit_bh(WRITE_SYNC_PLUG, bh);
+			submit_bh(WRITE_SYNC, bh);
 			gfs2_log_lock(sdp);
 			if (++n >= num)
 				break;
@@ -356,7 +356,7 @@ static void revoke_lo_before_commit(struct gfs2_sbd *sdp)
 		sdp->sd_log_num_revoke--;
 
 		if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) {
-			submit_bh(WRITE_SYNC_PLUG, bh);
+			submit_bh(WRITE_SYNC, bh);
 
 			bh = gfs2_log_get_buf(sdp);
 			mh = (struct gfs2_meta_header *)bh->b_data;
@@ -373,7 +373,7 @@ static void revoke_lo_before_commit(struct gfs2_sbd *sdp)
 	}
 	gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke);
 
-	submit_bh(WRITE_SYNC_PLUG, bh);
+	submit_bh(WRITE_SYNC, bh);
 }
 
 static void revoke_lo_before_scan(struct gfs2_jdesc *jd,
@@ -575,7 +575,7 @@ static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh,
 	ptr = bh_log_ptr(bh);
 	
 	get_bh(bh);
-	submit_bh(WRITE_SYNC_PLUG, bh);
+	submit_bh(WRITE_SYNC, bh);
 	gfs2_log_lock(sdp);
 	while(!list_empty(list)) {
 		bd = list_entry(list->next, struct gfs2_bufdata, bd_le.le_list);
@@ -601,7 +601,7 @@ static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh,
 		} else {
 			bh1 = gfs2_log_fake_buf(sdp, bd->bd_bh);
 		}
-		submit_bh(WRITE_SYNC_PLUG, bh1);
+		submit_bh(WRITE_SYNC, bh1);
 		gfs2_log_lock(sdp);
 		ptr += 2;
 	}
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index 01d97f4..675349b 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -37,7 +37,7 @@ static int gfs2_aspace_writepage(struct page *page, struct writeback_control *wb
 	struct buffer_head *bh, *head;
 	int nr_underway = 0;
 	int write_op = REQ_META |
-		(wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC_PLUG : WRITE);
+		(wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
 
 	BUG_ON(!PageLocked(page));
 	BUG_ON(!page_has_buffers(page));
@@ -94,7 +94,6 @@ static int gfs2_aspace_writepage(struct page *page, struct writeback_control *wb
 const struct address_space_operations gfs2_meta_aops = {
 	.writepage = gfs2_aspace_writepage,
 	.releasepage = gfs2_releasepage,
-	.sync_page = block_sync_page,
 };
 
 /**
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index dffb4e9..fff16c9 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -150,7 +150,6 @@ static int hfs_writepages(struct address_space *mapping,
 const struct address_space_operations hfs_btree_aops = {
 	.readpage	= hfs_readpage,
 	.writepage	= hfs_writepage,
-	.sync_page	= block_sync_page,
 	.write_begin	= hfs_write_begin,
 	.write_end	= generic_write_end,
 	.bmap		= hfs_bmap,
@@ -160,7 +159,6 @@ const struct address_space_operations hfs_btree_aops = {
 const struct address_space_operations hfs_aops = {
 	.readpage	= hfs_readpage,
 	.writepage	= hfs_writepage,
-	.sync_page	= block_sync_page,
 	.write_begin	= hfs_write_begin,
 	.write_end	= generic_write_end,
 	.bmap		= hfs_bmap,
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index a8df651..b248a6cf 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -146,7 +146,6 @@ static int hfsplus_writepages(struct address_space *mapping,
 const struct address_space_operations hfsplus_btree_aops = {
 	.readpage	= hfsplus_readpage,
 	.writepage	= hfsplus_writepage,
-	.sync_page	= block_sync_page,
 	.write_begin	= hfsplus_write_begin,
 	.write_end	= generic_write_end,
 	.bmap		= hfsplus_bmap,
@@ -156,7 +155,6 @@ const struct address_space_operations hfsplus_btree_aops = {
 const struct address_space_operations hfsplus_aops = {
 	.readpage	= hfsplus_readpage,
 	.writepage	= hfsplus_writepage,
-	.sync_page	= block_sync_page,
 	.write_begin	= hfsplus_write_begin,
 	.write_end	= generic_write_end,
 	.bmap		= hfsplus_bmap,
diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c
index 508ce66..fbaa669 100644
--- a/fs/hfsplus/ioctl.c
+++ b/fs/hfsplus/ioctl.c
@@ -47,7 +47,7 @@ static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
 	if (err)
 		goto out;
 
-	if (!is_owner_or_cap(inode)) {
+	if (!inode_owner_or_capable(inode)) {
 		err = -EACCES;
 		goto out_drop_write;
 	}
diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c
index 2dbae20..9b9eb69 100644
--- a/fs/hpfs/file.c
+++ b/fs/hpfs/file.c
@@ -119,7 +119,6 @@ static sector_t _hpfs_bmap(struct address_space *mapping, sector_t block)
 const struct address_space_operations hpfs_aops = {
 	.readpage = hpfs_readpage,
 	.writepage = hpfs_writepage,
-	.sync_page = block_sync_page,
 	.write_begin = hpfs_write_begin,
 	.write_end = generic_write_end,
 	.bmap = _hpfs_bmap
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 9885082..b9eeb1c 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -332,8 +332,7 @@ static void truncate_huge_page(struct page *page)
 {
 	cancel_dirty_page(page, /* No IO accounting for huge pages? */0);
 	ClearPageUptodate(page);
-	remove_from_page_cache(page);
-	put_page(page);
+	delete_from_page_cache(page);
 }
 
 static void truncate_hugepages(struct inode *inode, loff_t lstart)
diff --git a/fs/inode.c b/fs/inode.c
index 9910c03..5f4e11a 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -25,6 +25,39 @@
 #include <linux/async.h>
 #include <linux/posix_acl.h>
 #include <linux/ima.h>
+#include <linux/cred.h>
+#include "internal.h"
+
+/*
+ * inode locking rules.
+ *
+ * inode->i_lock protects:
+ *   inode->i_state, inode->i_hash, __iget()
+ * inode_lru_lock protects:
+ *   inode_lru, inode->i_lru
+ * inode_sb_list_lock protects:
+ *   sb->s_inodes, inode->i_sb_list
+ * inode_wb_list_lock protects:
+ *   bdi->wb.b_{dirty,io,more_io}, inode->i_wb_list
+ * inode_hash_lock protects:
+ *   inode_hashtable, inode->i_hash
+ *
+ * Lock ordering:
+ *
+ * inode_sb_list_lock
+ *   inode->i_lock
+ *     inode_lru_lock
+ *
+ * inode_wb_list_lock
+ *   inode->i_lock
+ *
+ * inode_hash_lock
+ *   inode_sb_list_lock
+ *   inode->i_lock
+ *
+ * iunique_lock
+ *   inode_hash_lock
+ */
 
 /*
  * This is needed for the following functions:
@@ -59,6 +92,8 @@
 
 static unsigned int i_hash_mask __read_mostly;
 static unsigned int i_hash_shift __read_mostly;
+static struct hlist_head *inode_hashtable __read_mostly;
+static __cacheline_aligned_in_smp DEFINE_SPINLOCK(inode_hash_lock);
 
 /*
  * Each inode can be on two separate lists. One is
@@ -73,15 +108,10 @@ static unsigned int i_hash_shift __read_mostly;
  */
 
 static LIST_HEAD(inode_lru);
-static struct hlist_head *inode_hashtable __read_mostly;
+static DEFINE_SPINLOCK(inode_lru_lock);
 
-/*
- * A simple spinlock to protect the list manipulations.
- *
- * NOTE! You also have to own the lock if you change
- * the i_state of an inode while it is in use..
- */
-DEFINE_SPINLOCK(inode_lock);
+__cacheline_aligned_in_smp DEFINE_SPINLOCK(inode_sb_list_lock);
+__cacheline_aligned_in_smp DEFINE_SPINLOCK(inode_wb_list_lock);
 
 /*
  * iprune_sem provides exclusion between the icache shrinking and the
@@ -136,15 +166,6 @@ int proc_nr_inodes(ctl_table *table, int write,
 }
 #endif
 
-static void wake_up_inode(struct inode *inode)
-{
-	/*
-	 * Prevent speculative execution through spin_unlock(&inode_lock);
-	 */
-	smp_mb();
-	wake_up_bit(&inode->i_state, __I_NEW);
-}
-
 /**
  * inode_init_always - perform inode structure intialisation
  * @sb: superblock inode belongs to
@@ -335,7 +356,7 @@ static void init_once(void *foo)
 }
 
 /*
- * inode_lock must be held
+ * inode->i_lock must be held
  */
 void __iget(struct inode *inode)
 {
@@ -353,23 +374,22 @@ EXPORT_SYMBOL(ihold);
 
 static void inode_lru_list_add(struct inode *inode)
 {
+	spin_lock(&inode_lru_lock);
 	if (list_empty(&inode->i_lru)) {
 		list_add(&inode->i_lru, &inode_lru);
 		inodes_stat.nr_unused++;
 	}
+	spin_unlock(&inode_lru_lock);
 }
 
 static void inode_lru_list_del(struct inode *inode)
 {
+	spin_lock(&inode_lru_lock);
 	if (!list_empty(&inode->i_lru)) {
 		list_del_init(&inode->i_lru);
 		inodes_stat.nr_unused--;
 	}
-}
-
-static inline void __inode_sb_list_add(struct inode *inode)
-{
-	list_add(&inode->i_sb_list, &inode->i_sb->s_inodes);
+	spin_unlock(&inode_lru_lock);
 }
 
 /**
@@ -378,15 +398,17 @@ static inline void __inode_sb_list_add(struct inode *inode)
  */
 void inode_sb_list_add(struct inode *inode)
 {
-	spin_lock(&inode_lock);
-	__inode_sb_list_add(inode);
-	spin_unlock(&inode_lock);
+	spin_lock(&inode_sb_list_lock);
+	list_add(&inode->i_sb_list, &inode->i_sb->s_inodes);
+	spin_unlock(&inode_sb_list_lock);
 }
 EXPORT_SYMBOL_GPL(inode_sb_list_add);
 
-static inline void __inode_sb_list_del(struct inode *inode)
+static inline void inode_sb_list_del(struct inode *inode)
 {
+	spin_lock(&inode_sb_list_lock);
 	list_del_init(&inode->i_sb_list);
+	spin_unlock(&inode_sb_list_lock);
 }
 
 static unsigned long hash(struct super_block *sb, unsigned long hashval)
@@ -411,24 +433,15 @@ void __insert_inode_hash(struct inode *inode, unsigned long hashval)
 {
 	struct hlist_head *b = inode_hashtable + hash(inode->i_sb, hashval);
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode_hash_lock);
+	spin_lock(&inode->i_lock);
 	hlist_add_head(&inode->i_hash, b);
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode->i_lock);
+	spin_unlock(&inode_hash_lock);
 }
 EXPORT_SYMBOL(__insert_inode_hash);
 
 /**
- *	__remove_inode_hash - remove an inode from the hash
- *	@inode: inode to unhash
- *
- *	Remove an inode from the superblock.
- */
-static void __remove_inode_hash(struct inode *inode)
-{
-	hlist_del_init(&inode->i_hash);
-}
-
-/**
  *	remove_inode_hash - remove an inode from the hash
  *	@inode: inode to unhash
  *
@@ -436,9 +449,11 @@ static void __remove_inode_hash(struct inode *inode)
  */
 void remove_inode_hash(struct inode *inode)
 {
-	spin_lock(&inode_lock);
+	spin_lock(&inode_hash_lock);
+	spin_lock(&inode->i_lock);
 	hlist_del_init(&inode->i_hash);
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode->i_lock);
+	spin_unlock(&inode_hash_lock);
 }
 EXPORT_SYMBOL(remove_inode_hash);
 
@@ -455,10 +470,29 @@ void end_writeback(struct inode *inode)
 }
 EXPORT_SYMBOL(end_writeback);
 
+/*
+ * Free the inode passed in, removing it from the lists it is still connected
+ * to. We remove any pages still attached to the inode and wait for any IO that
+ * is still in progress before finally destroying the inode.
+ *
+ * An inode must already be marked I_FREEING so that we avoid the inode being
+ * moved back onto lists if we race with other code that manipulates the lists
+ * (e.g. writeback_single_inode). The caller is responsible for setting this.
+ *
+ * An inode must already be removed from the LRU list before being evicted from
+ * the cache. This should occur atomically with setting the I_FREEING state
+ * flag, so no inodes here should ever be on the LRU when being evicted.
+ */
 static void evict(struct inode *inode)
 {
 	const struct super_operations *op = inode->i_sb->s_op;
 
+	BUG_ON(!(inode->i_state & I_FREEING));
+	BUG_ON(!list_empty(&inode->i_lru));
+
+	inode_wb_list_del(inode);
+	inode_sb_list_del(inode);
+
 	if (op->evict_inode) {
 		op->evict_inode(inode);
 	} else {
@@ -470,6 +504,15 @@ static void evict(struct inode *inode)
 		bd_forget(inode);
 	if (S_ISCHR(inode->i_mode) && inode->i_cdev)
 		cd_forget(inode);
+
+	remove_inode_hash(inode);
+
+	spin_lock(&inode->i_lock);
+	wake_up_bit(&inode->i_state, __I_NEW);
+	BUG_ON(inode->i_state != (I_FREEING | I_CLEAR));
+	spin_unlock(&inode->i_lock);
+
+	destroy_inode(inode);
 }
 
 /*
@@ -488,14 +531,6 @@ static void dispose_list(struct list_head *head)
 		list_del_init(&inode->i_lru);
 
 		evict(inode);
-
-		spin_lock(&inode_lock);
-		__remove_inode_hash(inode);
-		__inode_sb_list_del(inode);
-		spin_unlock(&inode_lock);
-
-		wake_up_inode(inode);
-		destroy_inode(inode);
 	}
 }
 
@@ -513,25 +548,23 @@ void evict_inodes(struct super_block *sb)
 	struct inode *inode, *next;
 	LIST_HEAD(dispose);
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode_sb_list_lock);
 	list_for_each_entry_safe(inode, next, &sb->s_inodes, i_sb_list) {
 		if (atomic_read(&inode->i_count))
 			continue;
-		if (inode->i_state & (I_NEW | I_FREEING | I_WILL_FREE))
+
+		spin_lock(&inode->i_lock);
+		if (inode->i_state & (I_NEW | I_FREEING | I_WILL_FREE)) {
+			spin_unlock(&inode->i_lock);
 			continue;
+		}
 
 		inode->i_state |= I_FREEING;
-
-		/*
-		 * Move the inode off the IO lists and LRU once I_FREEING is
-		 * set so that it won't get moved back on there if it is dirty.
-		 */
-		list_move(&inode->i_lru, &dispose);
-		list_del_init(&inode->i_wb_list);
-		if (!(inode->i_state & (I_DIRTY | I_SYNC)))
-			inodes_stat.nr_unused--;
+		inode_lru_list_del(inode);
+		spin_unlock(&inode->i_lock);
+		list_add(&inode->i_lru, &dispose);
 	}
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode_sb_list_lock);
 
 	dispose_list(&dispose);
 
@@ -560,31 +593,30 @@ int invalidate_inodes(struct super_block *sb, bool kill_dirty)
 	struct inode *inode, *next;
 	LIST_HEAD(dispose);
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode_sb_list_lock);
 	list_for_each_entry_safe(inode, next, &sb->s_inodes, i_sb_list) {
-		if (inode->i_state & (I_NEW | I_FREEING | I_WILL_FREE))
+		spin_lock(&inode->i_lock);
+		if (inode->i_state & (I_NEW | I_FREEING | I_WILL_FREE)) {
+			spin_unlock(&inode->i_lock);
 			continue;
+		}
 		if (inode->i_state & I_DIRTY && !kill_dirty) {
+			spin_unlock(&inode->i_lock);
 			busy = 1;
 			continue;
 		}
 		if (atomic_read(&inode->i_count)) {
+			spin_unlock(&inode->i_lock);
 			busy = 1;
 			continue;
 		}
 
 		inode->i_state |= I_FREEING;
-
-		/*
-		 * Move the inode off the IO lists and LRU once I_FREEING is
-		 * set so that it won't get moved back on there if it is dirty.
-		 */
-		list_move(&inode->i_lru, &dispose);
-		list_del_init(&inode->i_wb_list);
-		if (!(inode->i_state & (I_DIRTY | I_SYNC)))
-			inodes_stat.nr_unused--;
+		inode_lru_list_del(inode);
+		spin_unlock(&inode->i_lock);
+		list_add(&inode->i_lru, &dispose);
 	}
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode_sb_list_lock);
 
 	dispose_list(&dispose);
 
@@ -606,7 +638,7 @@ static int can_unuse(struct inode *inode)
 
 /*
  * Scan `goal' inodes on the unused list for freeable ones. They are moved to a
- * temporary list and then are freed outside inode_lock by dispose_list().
+ * temporary list and then are freed outside inode_lru_lock by dispose_list().
  *
  * Any inodes which are pinned purely because of attached pagecache have their
  * pagecache removed.  If the inode has metadata buffers attached to
@@ -627,7 +659,7 @@ static void prune_icache(int nr_to_scan)
 	unsigned long reap = 0;
 
 	down_read(&iprune_sem);
-	spin_lock(&inode_lock);
+	spin_lock(&inode_lru_lock);
 	for (nr_scanned = 0; nr_scanned < nr_to_scan; nr_scanned++) {
 		struct inode *inode;
 
@@ -637,53 +669,67 @@ static void prune_icache(int nr_to_scan)
 		inode = list_entry(inode_lru.prev, struct inode, i_lru);
 
 		/*
+		 * we are inverting the inode_lru_lock/inode->i_lock here,
+		 * so use a trylock. If we fail to get the lock, just move the
+		 * inode to the back of the list so we don't spin on it.
+		 */
+		if (!spin_trylock(&inode->i_lock)) {
+			list_move(&inode->i_lru, &inode_lru);
+			continue;
+		}
+
+		/*
 		 * Referenced or dirty inodes are still in use. Give them
 		 * another pass through the LRU as we canot reclaim them now.
 		 */
 		if (atomic_read(&inode->i_count) ||
 		    (inode->i_state & ~I_REFERENCED)) {
 			list_del_init(&inode->i_lru);
+			spin_unlock(&inode->i_lock);
 			inodes_stat.nr_unused--;
 			continue;
 		}
 
 		/* recently referenced inodes get one more pass */
 		if (inode->i_state & I_REFERENCED) {
-			list_move(&inode->i_lru, &inode_lru);
 			inode->i_state &= ~I_REFERENCED;
+			list_move(&inode->i_lru, &inode_lru);
+			spin_unlock(&inode->i_lock);
 			continue;
 		}
 		if (inode_has_buffers(inode) || inode->i_data.nrpages) {
 			__iget(inode);
-			spin_unlock(&inode_lock);
+			spin_unlock(&inode->i_lock);
+			spin_unlock(&inode_lru_lock);
 			if (remove_inode_buffers(inode))
 				reap += invalidate_mapping_pages(&inode->i_data,
 								0, -1);
 			iput(inode);
-			spin_lock(&inode_lock);
+			spin_lock(&inode_lru_lock);
 
 			if (inode != list_entry(inode_lru.next,
 						struct inode, i_lru))
 				continue;	/* wrong inode or list_empty */
-			if (!can_unuse(inode))
+			/* avoid lock inversions with trylock */
+			if (!spin_trylock(&inode->i_lock))
 				continue;
+			if (!can_unuse(inode)) {
+				spin_unlock(&inode->i_lock);
+				continue;
+			}
 		}
 		WARN_ON(inode->i_state & I_NEW);
 		inode->i_state |= I_FREEING;
+		spin_unlock(&inode->i_lock);
 
-		/*
-		 * Move the inode off the IO lists and LRU once I_FREEING is
-		 * set so that it won't get moved back on there if it is dirty.
-		 */
 		list_move(&inode->i_lru, &freeable);
-		list_del_init(&inode->i_wb_list);
 		inodes_stat.nr_unused--;
 	}
 	if (current_is_kswapd())
 		__count_vm_events(KSWAPD_INODESTEAL, reap);
 	else
 		__count_vm_events(PGINODESTEAL, reap);
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode_lru_lock);
 
 	dispose_list(&freeable);
 	up_read(&iprune_sem);
@@ -732,15 +778,21 @@ static struct inode *find_inode(struct super_block *sb,
 
 repeat:
 	hlist_for_each_entry(inode, node, head, i_hash) {
-		if (inode->i_sb != sb)
+		spin_lock(&inode->i_lock);
+		if (inode->i_sb != sb) {
+			spin_unlock(&inode->i_lock);
 			continue;
-		if (!test(inode, data))
+		}
+		if (!test(inode, data)) {
+			spin_unlock(&inode->i_lock);
 			continue;
+		}
 		if (inode->i_state & (I_FREEING|I_WILL_FREE)) {
 			__wait_on_freeing_inode(inode);
 			goto repeat;
 		}
 		__iget(inode);
+		spin_unlock(&inode->i_lock);
 		return inode;
 	}
 	return NULL;
@@ -758,15 +810,21 @@ static struct inode *find_inode_fast(struct super_block *sb,
 
 repeat:
 	hlist_for_each_entry(inode, node, head, i_hash) {
-		if (inode->i_ino != ino)
+		spin_lock(&inode->i_lock);
+		if (inode->i_ino != ino) {
+			spin_unlock(&inode->i_lock);
 			continue;
-		if (inode->i_sb != sb)
+		}
+		if (inode->i_sb != sb) {
+			spin_unlock(&inode->i_lock);
 			continue;
+		}
 		if (inode->i_state & (I_FREEING|I_WILL_FREE)) {
 			__wait_on_freeing_inode(inode);
 			goto repeat;
 		}
 		__iget(inode);
+		spin_unlock(&inode->i_lock);
 		return inode;
 	}
 	return NULL;
@@ -826,19 +884,26 @@ struct inode *new_inode(struct super_block *sb)
 {
 	struct inode *inode;
 
-	spin_lock_prefetch(&inode_lock);
+	spin_lock_prefetch(&inode_sb_list_lock);
 
 	inode = alloc_inode(sb);
 	if (inode) {
-		spin_lock(&inode_lock);
-		__inode_sb_list_add(inode);
+		spin_lock(&inode->i_lock);
 		inode->i_state = 0;
-		spin_unlock(&inode_lock);
+		spin_unlock(&inode->i_lock);
+		inode_sb_list_add(inode);
 	}
 	return inode;
 }
 EXPORT_SYMBOL(new_inode);
 
+/**
+ * unlock_new_inode - clear the I_NEW state and wake up any waiters
+ * @inode:	new inode to unlock
+ *
+ * Called when the inode is fully initialised to clear the new state of the
+ * inode and wake up anyone waiting for the inode to finish initialisation.
+ */
 void unlock_new_inode(struct inode *inode)
 {
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
@@ -858,51 +923,67 @@ void unlock_new_inode(struct inode *inode)
 		}
 	}
 #endif
-	/*
-	 * This is special!  We do not need the spinlock when clearing I_NEW,
-	 * because we're guaranteed that nobody else tries to do anything about
-	 * the state of the inode when it is locked, as we just created it (so
-	 * there can be no old holders that haven't tested I_NEW).
-	 * However we must emit the memory barrier so that other CPUs reliably
-	 * see the clearing of I_NEW after the other inode initialisation has
-	 * completed.
-	 */
-	smp_mb();
+	spin_lock(&inode->i_lock);
 	WARN_ON(!(inode->i_state & I_NEW));
 	inode->i_state &= ~I_NEW;
-	wake_up_inode(inode);
+	wake_up_bit(&inode->i_state, __I_NEW);
+	spin_unlock(&inode->i_lock);
 }
 EXPORT_SYMBOL(unlock_new_inode);
 
-/*
- * This is called without the inode lock held.. Be careful.
+/**
+ * iget5_locked - obtain an inode from a mounted file system
+ * @sb:		super block of file system
+ * @hashval:	hash value (usually inode number) to get
+ * @test:	callback used for comparisons between inodes
+ * @set:	callback used to initialize a new struct inode
+ * @data:	opaque data pointer to pass to @test and @set
+ *
+ * Search for the inode specified by @hashval and @data in the inode cache,
+ * and if present it is return it with an increased reference count. This is
+ * a generalized version of iget_locked() for file systems where the inode
+ * number is not sufficient for unique identification of an inode.
+ *
+ * If the inode is not in cache, allocate a new inode and return it locked,
+ * hashed, and with the I_NEW flag set. The file system gets to fill it in
+ * before unlocking it via unlock_new_inode().
  *
- * We no longer cache the sb_flags in i_flags - see fs.h
- *	-- rmk@arm.uk.linux.org
+ * Note both @test and @set are called with the inode_hash_lock held, so can't
+ * sleep.
  */
-static struct inode *get_new_inode(struct super_block *sb,
-				struct hlist_head *head,
-				int (*test)(struct inode *, void *),
-				int (*set)(struct inode *, void *),
-				void *data)
+struct inode *iget5_locked(struct super_block *sb, unsigned long hashval,
+		int (*test)(struct inode *, void *),
+		int (*set)(struct inode *, void *), void *data)
 {
+	struct hlist_head *head = inode_hashtable + hash(sb, hashval);
 	struct inode *inode;
 
+	spin_lock(&inode_hash_lock);
+	inode = find_inode(sb, head, test, data);
+	spin_unlock(&inode_hash_lock);
+
+	if (inode) {
+		wait_on_inode(inode);
+		return inode;
+	}
+
 	inode = alloc_inode(sb);
 	if (inode) {
 		struct inode *old;
 
-		spin_lock(&inode_lock);
+		spin_lock(&inode_hash_lock);
 		/* We released the lock, so.. */
 		old = find_inode(sb, head, test, data);
 		if (!old) {
 			if (set(inode, data))
 				goto set_failed;
 
-			hlist_add_head(&inode->i_hash, head);
-			__inode_sb_list_add(inode);
+			spin_lock(&inode->i_lock);
 			inode->i_state = I_NEW;
-			spin_unlock(&inode_lock);
+			hlist_add_head(&inode->i_hash, head);
+			spin_unlock(&inode->i_lock);
+			inode_sb_list_add(inode);
+			spin_unlock(&inode_hash_lock);
 
 			/* Return the locked inode with I_NEW set, the
 			 * caller is responsible for filling in the contents
@@ -915,7 +996,7 @@ static struct inode *get_new_inode(struct super_block *sb,
 		 * us. Use the old inode instead of the one we just
 		 * allocated.
 		 */
-		spin_unlock(&inode_lock);
+		spin_unlock(&inode_hash_lock);
 		destroy_inode(inode);
 		inode = old;
 		wait_on_inode(inode);
@@ -923,33 +1004,53 @@ static struct inode *get_new_inode(struct super_block *sb,
 	return inode;
 
 set_failed:
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode_hash_lock);
 	destroy_inode(inode);
 	return NULL;
 }
+EXPORT_SYMBOL(iget5_locked);
 
-/*
- * get_new_inode_fast is the fast path version of get_new_inode, see the
- * comment at iget_locked for details.
+/**
+ * iget_locked - obtain an inode from a mounted file system
+ * @sb:		super block of file system
+ * @ino:	inode number to get
+ *
+ * Search for the inode specified by @ino in the inode cache and if present
+ * return it with an increased reference count. This is for file systems
+ * where the inode number is sufficient for unique identification of an inode.
+ *
+ * If the inode is not in cache, allocate a new inode and return it locked,
+ * hashed, and with the I_NEW flag set.  The file system gets to fill it in
+ * before unlocking it via unlock_new_inode().
  */
-static struct inode *get_new_inode_fast(struct super_block *sb,
-				struct hlist_head *head, unsigned long ino)
+struct inode *iget_locked(struct super_block *sb, unsigned long ino)
 {
+	struct hlist_head *head = inode_hashtable + hash(sb, ino);
 	struct inode *inode;
 
+	spin_lock(&inode_hash_lock);
+	inode = find_inode_fast(sb, head, ino);
+	spin_unlock(&inode_hash_lock);
+	if (inode) {
+		wait_on_inode(inode);
+		return inode;
+	}
+
 	inode = alloc_inode(sb);
 	if (inode) {
 		struct inode *old;
 
-		spin_lock(&inode_lock);
+		spin_lock(&inode_hash_lock);
 		/* We released the lock, so.. */
 		old = find_inode_fast(sb, head, ino);
 		if (!old) {
 			inode->i_ino = ino;
-			hlist_add_head(&inode->i_hash, head);
-			__inode_sb_list_add(inode);
+			spin_lock(&inode->i_lock);
 			inode->i_state = I_NEW;
-			spin_unlock(&inode_lock);
+			hlist_add_head(&inode->i_hash, head);
+			spin_unlock(&inode->i_lock);
+			inode_sb_list_add(inode);
+			spin_unlock(&inode_hash_lock);
 
 			/* Return the locked inode with I_NEW set, the
 			 * caller is responsible for filling in the contents
@@ -962,13 +1063,14 @@ static struct inode *get_new_inode_fast(struct super_block *sb,
 		 * us. Use the old inode instead of the one we just
 		 * allocated.
 		 */
-		spin_unlock(&inode_lock);
+		spin_unlock(&inode_hash_lock);
 		destroy_inode(inode);
 		inode = old;
 		wait_on_inode(inode);
 	}
 	return inode;
 }
+EXPORT_SYMBOL(iget_locked);
 
 /*
  * search the inode cache for a matching inode number.
@@ -983,10 +1085,14 @@ static int test_inode_iunique(struct super_block *sb, unsigned long ino)
 	struct hlist_node *node;
 	struct inode *inode;
 
+	spin_lock(&inode_hash_lock);
 	hlist_for_each_entry(inode, node, b, i_hash) {
-		if (inode->i_ino == ino && inode->i_sb == sb)
+		if (inode->i_ino == ino && inode->i_sb == sb) {
+			spin_unlock(&inode_hash_lock);
 			return 0;
+		}
 	}
+	spin_unlock(&inode_hash_lock);
 
 	return 1;
 }
@@ -1016,7 +1122,6 @@ ino_t iunique(struct super_block *sb, ino_t max_reserved)
 	static unsigned int counter;
 	ino_t res;
 
-	spin_lock(&inode_lock);
 	spin_lock(&iunique_lock);
 	do {
 		if (counter <= max_reserved)
@@ -1024,7 +1129,6 @@ ino_t iunique(struct super_block *sb, ino_t max_reserved)
 		res = counter++;
 	} while (!test_inode_iunique(sb, res));
 	spin_unlock(&iunique_lock);
-	spin_unlock(&inode_lock);
 
 	return res;
 }
@@ -1032,116 +1136,50 @@ EXPORT_SYMBOL(iunique);
 
 struct inode *igrab(struct inode *inode)
 {
-	spin_lock(&inode_lock);
-	if (!(inode->i_state & (I_FREEING|I_WILL_FREE)))
+	spin_lock(&inode->i_lock);
+	if (!(inode->i_state & (I_FREEING|I_WILL_FREE))) {
 		__iget(inode);
-	else
+		spin_unlock(&inode->i_lock);
+	} else {
+		spin_unlock(&inode->i_lock);
 		/*
 		 * Handle the case where s_op->clear_inode is not been
 		 * called yet, and somebody is calling igrab
 		 * while the inode is getting freed.
 		 */
 		inode = NULL;
-	spin_unlock(&inode_lock);
+	}
 	return inode;
 }
 EXPORT_SYMBOL(igrab);
 
 /**
- * ifind - internal function, you want ilookup5() or iget5().
- * @sb:		super block of file system to search
- * @head:       the head of the list to search
- * @test:	callback used for comparisons between inodes
- * @data:	opaque data pointer to pass to @test
- * @wait:	if true wait for the inode to be unlocked, if false do not
- *
- * ifind() searches for the inode specified by @data in the inode
- * cache. This is a generalized version of ifind_fast() for file systems where
- * the inode number is not sufficient for unique identification of an inode.
- *
- * If the inode is in the cache, the inode is returned with an incremented
- * reference count.
- *
- * Otherwise NULL is returned.
- *
- * Note, @test is called with the inode_lock held, so can't sleep.
- */
-static struct inode *ifind(struct super_block *sb,
-		struct hlist_head *head, int (*test)(struct inode *, void *),
-		void *data, const int wait)
-{
-	struct inode *inode;
-
-	spin_lock(&inode_lock);
-	inode = find_inode(sb, head, test, data);
-	if (inode) {
-		spin_unlock(&inode_lock);
-		if (likely(wait))
-			wait_on_inode(inode);
-		return inode;
-	}
-	spin_unlock(&inode_lock);
-	return NULL;
-}
-
-/**
- * ifind_fast - internal function, you want ilookup() or iget().
- * @sb:		super block of file system to search
- * @head:       head of the list to search
- * @ino:	inode number to search for
- *
- * ifind_fast() searches for the inode @ino in the inode cache. This is for
- * file systems where the inode number is sufficient for unique identification
- * of an inode.
- *
- * If the inode is in the cache, the inode is returned with an incremented
- * reference count.
- *
- * Otherwise NULL is returned.
- */
-static struct inode *ifind_fast(struct super_block *sb,
-		struct hlist_head *head, unsigned long ino)
-{
-	struct inode *inode;
-
-	spin_lock(&inode_lock);
-	inode = find_inode_fast(sb, head, ino);
-	if (inode) {
-		spin_unlock(&inode_lock);
-		wait_on_inode(inode);
-		return inode;
-	}
-	spin_unlock(&inode_lock);
-	return NULL;
-}
-
-/**
  * ilookup5_nowait - search for an inode in the inode cache
  * @sb:		super block of file system to search
  * @hashval:	hash value (usually inode number) to search for
  * @test:	callback used for comparisons between inodes
  * @data:	opaque data pointer to pass to @test
  *
- * ilookup5() uses ifind() to search for the inode specified by @hashval and
- * @data in the inode cache. This is a generalized version of ilookup() for
- * file systems where the inode number is not sufficient for unique
- * identification of an inode.
- *
+ * Search for the inode specified by @hashval and @data in the inode cache.
  * If the inode is in the cache, the inode is returned with an incremented
- * reference count.  Note, the inode lock is not waited upon so you have to be
- * very careful what you do with the returned inode.  You probably should be
- * using ilookup5() instead.
+ * reference count.
  *
- * Otherwise NULL is returned.
+ * Note: I_NEW is not waited upon so you have to be very careful what you do
+ * with the returned inode.  You probably should be using ilookup5() instead.
  *
- * Note, @test is called with the inode_lock held, so can't sleep.
+ * Note2: @test is called with the inode_hash_lock held, so can't sleep.
  */
 struct inode *ilookup5_nowait(struct super_block *sb, unsigned long hashval,
 		int (*test)(struct inode *, void *), void *data)
 {
 	struct hlist_head *head = inode_hashtable + hash(sb, hashval);
+	struct inode *inode;
+
+	spin_lock(&inode_hash_lock);
+	inode = find_inode(sb, head, test, data);
+	spin_unlock(&inode_hash_lock);
 
-	return ifind(sb, head, test, data, 0);
+	return inode;
 }
 EXPORT_SYMBOL(ilookup5_nowait);
 
@@ -1152,24 +1190,24 @@ EXPORT_SYMBOL(ilookup5_nowait);
  * @test:	callback used for comparisons between inodes
  * @data:	opaque data pointer to pass to @test
  *
- * ilookup5() uses ifind() to search for the inode specified by @hashval and
- * @data in the inode cache. This is a generalized version of ilookup() for
- * file systems where the inode number is not sufficient for unique
- * identification of an inode.
- *
- * If the inode is in the cache, the inode lock is waited upon and the inode is
+ * Search for the inode specified by @hashval and @data in the inode cache,
+ * and if the inode is in the cache, return the inode with an incremented
+ * reference count.  Waits on I_NEW before returning the inode.
  * returned with an incremented reference count.
  *
- * Otherwise NULL is returned.
+ * This is a generalized version of ilookup() for file systems where the
+ * inode number is not sufficient for unique identification of an inode.
  *
- * Note, @test is called with the inode_lock held, so can't sleep.
+ * Note: @test is called with the inode_hash_lock held, so can't sleep.
  */
 struct inode *ilookup5(struct super_block *sb, unsigned long hashval,
 		int (*test)(struct inode *, void *), void *data)
 {
-	struct hlist_head *head = inode_hashtable + hash(sb, hashval);
+	struct inode *inode = ilookup5_nowait(sb, hashval, test, data);
 
-	return ifind(sb, head, test, data, 1);
+	if (inode)
+		wait_on_inode(inode);
+	return inode;
 }
 EXPORT_SYMBOL(ilookup5);
 
@@ -1178,91 +1216,23 @@ EXPORT_SYMBOL(ilookup5);
  * @sb:		super block of file system to search
  * @ino:	inode number to search for
  *
- * ilookup() uses ifind_fast() to search for the inode @ino in the inode cache.
- * This is for file systems where the inode number is sufficient for unique
- * identification of an inode.
- *
- * If the inode is in the cache, the inode is returned with an incremented
- * reference count.
- *
- * Otherwise NULL is returned.
+ * Search for the inode @ino in the inode cache, and if the inode is in the
+ * cache, the inode is returned with an incremented reference count.
  */
 struct inode *ilookup(struct super_block *sb, unsigned long ino)
 {
 	struct hlist_head *head = inode_hashtable + hash(sb, ino);
-
-	return ifind_fast(sb, head, ino);
-}
-EXPORT_SYMBOL(ilookup);
-
-/**
- * iget5_locked - obtain an inode from a mounted file system
- * @sb:		super block of file system
- * @hashval:	hash value (usually inode number) to get
- * @test:	callback used for comparisons between inodes
- * @set:	callback used to initialize a new struct inode
- * @data:	opaque data pointer to pass to @test and @set
- *
- * iget5_locked() uses ifind() to search for the inode specified by @hashval
- * and @data in the inode cache and if present it is returned with an increased
- * reference count. This is a generalized version of iget_locked() for file
- * systems where the inode number is not sufficient for unique identification
- * of an inode.
- *
- * If the inode is not in cache, get_new_inode() is called to allocate a new
- * inode and this is returned locked, hashed, and with the I_NEW flag set. The
- * file system gets to fill it in before unlocking it via unlock_new_inode().
- *
- * Note both @test and @set are called with the inode_lock held, so can't sleep.
- */
-struct inode *iget5_locked(struct super_block *sb, unsigned long hashval,
-		int (*test)(struct inode *, void *),
-		int (*set)(struct inode *, void *), void *data)
-{
-	struct hlist_head *head = inode_hashtable + hash(sb, hashval);
 	struct inode *inode;
 
-	inode = ifind(sb, head, test, data, 1);
-	if (inode)
-		return inode;
-	/*
-	 * get_new_inode() will do the right thing, re-trying the search
-	 * in case it had to block at any point.
-	 */
-	return get_new_inode(sb, head, test, set, data);
-}
-EXPORT_SYMBOL(iget5_locked);
-
-/**
- * iget_locked - obtain an inode from a mounted file system
- * @sb:		super block of file system
- * @ino:	inode number to get
- *
- * iget_locked() uses ifind_fast() to search for the inode specified by @ino in
- * the inode cache and if present it is returned with an increased reference
- * count. This is for file systems where the inode number is sufficient for
- * unique identification of an inode.
- *
- * If the inode is not in cache, get_new_inode_fast() is called to allocate a
- * new inode and this is returned locked, hashed, and with the I_NEW flag set.
- * The file system gets to fill it in before unlocking it via
- * unlock_new_inode().
- */
-struct inode *iget_locked(struct super_block *sb, unsigned long ino)
-{
-	struct hlist_head *head = inode_hashtable + hash(sb, ino);
-	struct inode *inode;
+	spin_lock(&inode_hash_lock);
+	inode = find_inode_fast(sb, head, ino);
+	spin_unlock(&inode_hash_lock);
 
-	inode = ifind_fast(sb, head, ino);
 	if (inode)
-		return inode;
-	/*
-	 * get_new_inode_fast() will do the right thing, re-trying the search
-	 * in case it had to block at any point.
-	 */
-	return get_new_inode_fast(sb, head, ino);
+		wait_on_inode(inode);
+	return inode;
 }
-EXPORT_SYMBOL(iget_locked);
+EXPORT_SYMBOL(ilookup);
 
 int insert_inode_locked(struct inode *inode)
 {
@@ -1270,27 +1240,33 @@ int insert_inode_locked(struct inode *inode)
 	ino_t ino = inode->i_ino;
 	struct hlist_head *head = inode_hashtable + hash(sb, ino);
 
-	inode->i_state |= I_NEW;
 	while (1) {
 		struct hlist_node *node;
 		struct inode *old = NULL;
-		spin_lock(&inode_lock);
+		spin_lock(&inode_hash_lock);
 		hlist_for_each_entry(old, node, head, i_hash) {
 			if (old->i_ino != ino)
 				continue;
 			if (old->i_sb != sb)
 				continue;
-			if (old->i_state & (I_FREEING|I_WILL_FREE))
+			spin_lock(&old->i_lock);
+			if (old->i_state & (I_FREEING|I_WILL_FREE)) {
+				spin_unlock(&old->i_lock);
 				continue;
+			}
 			break;
 		}
 		if (likely(!node)) {
+			spin_lock(&inode->i_lock);
+			inode->i_state |= I_NEW;
 			hlist_add_head(&inode->i_hash, head);
-			spin_unlock(&inode_lock);
+			spin_unlock(&inode->i_lock);
+			spin_unlock(&inode_hash_lock);
 			return 0;
 		}
 		__iget(old);
-		spin_unlock(&inode_lock);
+		spin_unlock(&old->i_lock);
+		spin_unlock(&inode_hash_lock);
 		wait_on_inode(old);
 		if (unlikely(!inode_unhashed(old))) {
 			iput(old);
@@ -1307,29 +1283,34 @@ int insert_inode_locked4(struct inode *inode, unsigned long hashval,
 	struct super_block *sb = inode->i_sb;
 	struct hlist_head *head = inode_hashtable + hash(sb, hashval);
 
-	inode->i_state |= I_NEW;
-
 	while (1) {
 		struct hlist_node *node;
 		struct inode *old = NULL;
 
-		spin_lock(&inode_lock);
+		spin_lock(&inode_hash_lock);
 		hlist_for_each_entry(old, node, head, i_hash) {
 			if (old->i_sb != sb)
 				continue;
 			if (!test(old, data))
 				continue;
-			if (old->i_state & (I_FREEING|I_WILL_FREE))
+			spin_lock(&old->i_lock);
+			if (old->i_state & (I_FREEING|I_WILL_FREE)) {
+				spin_unlock(&old->i_lock);
 				continue;
+			}
 			break;
 		}
 		if (likely(!node)) {
+			spin_lock(&inode->i_lock);
+			inode->i_state |= I_NEW;
 			hlist_add_head(&inode->i_hash, head);
-			spin_unlock(&inode_lock);
+			spin_unlock(&inode->i_lock);
+			spin_unlock(&inode_hash_lock);
 			return 0;
 		}
 		__iget(old);
-		spin_unlock(&inode_lock);
+		spin_unlock(&old->i_lock);
+		spin_unlock(&inode_hash_lock);
 		wait_on_inode(old);
 		if (unlikely(!inode_unhashed(old))) {
 			iput(old);
@@ -1374,47 +1355,35 @@ static void iput_final(struct inode *inode)
 	const struct super_operations *op = inode->i_sb->s_op;
 	int drop;
 
+	WARN_ON(inode->i_state & I_NEW);
+
 	if (op && op->drop_inode)
 		drop = op->drop_inode(inode);
 	else
 		drop = generic_drop_inode(inode);
 
+	if (!drop && (sb->s_flags & MS_ACTIVE)) {
+		inode->i_state |= I_REFERENCED;
+		if (!(inode->i_state & (I_DIRTY|I_SYNC)))
+			inode_lru_list_add(inode);
+		spin_unlock(&inode->i_lock);
+		return;
+	}
+
 	if (!drop) {
-		if (sb->s_flags & MS_ACTIVE) {
-			inode->i_state |= I_REFERENCED;
-			if (!(inode->i_state & (I_DIRTY|I_SYNC))) {
-				inode_lru_list_add(inode);
-			}
-			spin_unlock(&inode_lock);
-			return;
-		}
-		WARN_ON(inode->i_state & I_NEW);
 		inode->i_state |= I_WILL_FREE;
-		spin_unlock(&inode_lock);
+		spin_unlock(&inode->i_lock);
 		write_inode_now(inode, 1);
-		spin_lock(&inode_lock);
+		spin_lock(&inode->i_lock);
 		WARN_ON(inode->i_state & I_NEW);
 		inode->i_state &= ~I_WILL_FREE;
-		__remove_inode_hash(inode);
 	}
 
-	WARN_ON(inode->i_state & I_NEW);
 	inode->i_state |= I_FREEING;
-
-	/*
-	 * Move the inode off the IO lists and LRU once I_FREEING is
-	 * set so that it won't get moved back on there if it is dirty.
-	 */
 	inode_lru_list_del(inode);
-	list_del_init(&inode->i_wb_list);
+	spin_unlock(&inode->i_lock);
 
-	__inode_sb_list_del(inode);
-	spin_unlock(&inode_lock);
 	evict(inode);
-	remove_inode_hash(inode);
-	wake_up_inode(inode);
-	BUG_ON(inode->i_state != (I_FREEING | I_CLEAR));
-	destroy_inode(inode);
 }
 
 /**
@@ -1431,7 +1400,7 @@ void iput(struct inode *inode)
 	if (inode) {
 		BUG_ON(inode->i_state & I_CLEAR);
 
-		if (atomic_dec_and_lock(&inode->i_count, &inode_lock))
+		if (atomic_dec_and_lock(&inode->i_count, &inode->i_lock))
 			iput_final(inode);
 	}
 }
@@ -1610,9 +1579,8 @@ EXPORT_SYMBOL(inode_wait);
  * to recheck inode state.
  *
  * It doesn't matter if I_NEW is not set initially, a call to
- * wake_up_inode() after removing from the hash list will DTRT.
- *
- * This is called with inode_lock held.
+ * wake_up_bit(&inode->i_state, __I_NEW) after removing from the hash list
+ * will DTRT.
  */
 static void __wait_on_freeing_inode(struct inode *inode)
 {
@@ -1620,10 +1588,11 @@ static void __wait_on_freeing_inode(struct inode *inode)
 	DEFINE_WAIT_BIT(wait, &inode->i_state, __I_NEW);
 	wq = bit_waitqueue(&inode->i_state, __I_NEW);
 	prepare_to_wait(wq, &wait.wait, TASK_UNINTERRUPTIBLE);
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode->i_lock);
+	spin_unlock(&inode_hash_lock);
 	schedule();
 	finish_wait(wq, &wait.wait);
-	spin_lock(&inode_lock);
+	spin_lock(&inode_hash_lock);
 }
 
 static __initdata unsigned long ihash_entries;
@@ -1715,7 +1684,7 @@ void init_special_inode(struct inode *inode, umode_t mode, dev_t rdev)
 EXPORT_SYMBOL(init_special_inode);
 
 /**
- * Init uid,gid,mode for new inode according to posix standards
+ * inode_init_owner - Init uid,gid,mode for new inode according to posix standards
  * @inode: New inode
  * @dir: Directory inode
  * @mode: mode of the new inode
@@ -1733,3 +1702,22 @@ void inode_init_owner(struct inode *inode, const struct inode *dir,
 	inode->i_mode = mode;
 }
 EXPORT_SYMBOL(inode_init_owner);
+
+/**
+ * inode_owner_or_capable - check current task permissions to inode
+ * @inode: inode being checked
+ *
+ * Return true if current either has CAP_FOWNER to the inode, or
+ * owns the file.
+ */
+bool inode_owner_or_capable(const struct inode *inode)
+{
+	struct user_namespace *ns = inode_userns(inode);
+
+	if (current_user_ns() == ns && current_fsuid() == inode->i_uid)
+		return true;
+	if (ns_capable(ns, CAP_FOWNER))
+		return true;
+	return false;
+}
+EXPORT_SYMBOL(inode_owner_or_capable);
diff --git a/fs/internal.h b/fs/internal.h
index 1719154..b29c46e 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -64,6 +64,7 @@ extern int copy_mount_string(const void __user *, char **);
 
 extern unsigned int mnt_get_count(struct vfsmount *mnt);
 extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
+extern struct vfsmount *lookup_mnt(struct path *);
 extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
 				struct vfsmount *);
 extern void release_mounts(struct list_head *);
@@ -124,6 +125,13 @@ extern long do_handle_open(int mountdirfd,
 /*
  * inode.c
  */
+extern spinlock_t inode_sb_list_lock;
+
+/*
+ * fs-writeback.c
+ */
+extern void inode_wb_list_del(struct inode *inode);
+
 extern int get_nr_dirty_inodes(void);
 extern void evict_inodes(struct super_block *);
 extern int invalidate_inodes(struct super_block *, bool);
diff --git a/fs/ioctl.c b/fs/ioctl.c
index 1eebeb7..1d9b9fc 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -548,6 +548,7 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
 {
 	int error = 0;
 	int __user *argp = (int __user *)arg;
+	struct inode *inode = filp->f_path.dentry->d_inode;
 
 	switch (cmd) {
 	case FIOCLEX:
@@ -567,13 +568,11 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
 		break;
 
 	case FIOQSIZE:
-		if (S_ISDIR(filp->f_path.dentry->d_inode->i_mode) ||
-		    S_ISREG(filp->f_path.dentry->d_inode->i_mode) ||
-		    S_ISLNK(filp->f_path.dentry->d_inode->i_mode)) {
-			loff_t res =
-				inode_get_bytes(filp->f_path.dentry->d_inode);
-			error = copy_to_user((loff_t __user *)arg, &res,
-					     sizeof(res)) ? -EFAULT : 0;
+		if (S_ISDIR(inode->i_mode) || S_ISREG(inode->i_mode) ||
+		    S_ISLNK(inode->i_mode)) {
+			loff_t res = inode_get_bytes(inode);
+			error = copy_to_user(argp, &res, sizeof(res)) ?
+					-EFAULT : 0;
 		} else
 			error = -ENOTTY;
 		break;
@@ -590,14 +589,10 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
 		return ioctl_fiemap(filp, arg);
 
 	case FIGETBSZ:
-	{
-		struct inode *inode = filp->f_path.dentry->d_inode;
-		int __user *p = (int __user *)arg;
-		return put_user(inode->i_sb->s_blocksize, p);
-	}
+		return put_user(inode->i_sb->s_blocksize, argp);
 
 	default:
-		if (S_ISREG(filp->f_path.dentry->d_inode->i_mode))
+		if (S_ISREG(inode->i_mode))
 			error = file_ioctl(filp, cmd, arg);
 		else
 			error = vfs_ioctl(filp, cmd, arg);
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index a0f3833..3db5ba4 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -1158,7 +1158,6 @@ static sector_t _isofs_bmap(struct address_space *mapping, sector_t block)
 
 static const struct address_space_operations isofs_aops = {
 	.readpage = isofs_readpage,
-	.sync_page = block_sync_page,
 	.bmap = _isofs_bmap
 };
 
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index 34a4861..da871ee 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -20,6 +20,7 @@
 #include <linux/mm.h>
 #include <linux/pagemap.h>
 #include <linux/bio.h>
+#include <linux/blkdev.h>
 
 /*
  * Default IO end handler for temporary BJ_IO buffer_heads.
@@ -294,7 +295,7 @@ void journal_commit_transaction(journal_t *journal)
 	int first_tag = 0;
 	int tag_flag;
 	int i;
-	int write_op = WRITE_SYNC;
+	struct blk_plug plug;
 
 	/*
 	 * First job: lock down the current transaction and wait for
@@ -327,13 +328,6 @@ void journal_commit_transaction(journal_t *journal)
 	spin_lock(&journal->j_state_lock);
 	commit_transaction->t_state = T_LOCKED;
 
-	/*
-	 * Use plugged writes here, since we want to submit several before
-	 * we unplug the device. We don't do explicit unplugging in here,
-	 * instead we rely on sync_buffer() doing the unplug for us.
-	 */
-	if (commit_transaction->t_synchronous_commit)
-		write_op = WRITE_SYNC_PLUG;
 	spin_lock(&commit_transaction->t_handle_lock);
 	while (commit_transaction->t_updates) {
 		DEFINE_WAIT(wait);
@@ -418,8 +412,10 @@ void journal_commit_transaction(journal_t *journal)
 	 * Now start flushing things to disk, in the order they appear
 	 * on the transaction lists.  Data blocks go first.
 	 */
+	blk_start_plug(&plug);
 	err = journal_submit_data_buffers(journal, commit_transaction,
-					  write_op);
+					  WRITE_SYNC);
+	blk_finish_plug(&plug);
 
 	/*
 	 * Wait for all previously submitted IO to complete.
@@ -480,7 +476,9 @@ void journal_commit_transaction(journal_t *journal)
 		err = 0;
 	}
 
-	journal_write_revoke_records(journal, commit_transaction, write_op);
+	blk_start_plug(&plug);
+
+	journal_write_revoke_records(journal, commit_transaction, WRITE_SYNC);
 
 	/*
 	 * If we found any dirty or locked buffers, then we should have
@@ -650,7 +648,7 @@ start_journal_io:
 				clear_buffer_dirty(bh);
 				set_buffer_uptodate(bh);
 				bh->b_end_io = journal_end_buffer_io_sync;
-				submit_bh(write_op, bh);
+				submit_bh(WRITE_SYNC, bh);
 			}
 			cond_resched();
 
@@ -661,6 +659,8 @@ start_journal_io:
 		}
 	}
 
+	blk_finish_plug(&plug);
+
 	/* Lo and behold: we have just managed to send a transaction to
            the log.  Before we can commit it, wait for the IO so far to
            complete.  Control buffers being written are on the
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index f3ad159..fa36d76 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -137,9 +137,9 @@ static int journal_submit_commit_record(journal_t *journal,
 	if (journal->j_flags & JBD2_BARRIER &&
 	    !JBD2_HAS_INCOMPAT_FEATURE(journal,
 				       JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT))
-		ret = submit_bh(WRITE_SYNC_PLUG | WRITE_FLUSH_FUA, bh);
+		ret = submit_bh(WRITE_SYNC | WRITE_FLUSH_FUA, bh);
 	else
-		ret = submit_bh(WRITE_SYNC_PLUG, bh);
+		ret = submit_bh(WRITE_SYNC, bh);
 
 	*cbh = bh;
 	return ret;
@@ -329,7 +329,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 	int tag_bytes = journal_tag_bytes(journal);
 	struct buffer_head *cbh = NULL; /* For transactional checksums */
 	__u32 crc32_sum = ~0;
-	int write_op = WRITE_SYNC;
+	struct blk_plug plug;
 
 	/*
 	 * First job: lock down the current transaction and wait for
@@ -363,13 +363,6 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 	write_lock(&journal->j_state_lock);
 	commit_transaction->t_state = T_LOCKED;
 
-	/*
-	 * Use plugged writes here, since we want to submit several before
-	 * we unplug the device. We don't do explicit unplugging in here,
-	 * instead we rely on sync_buffer() doing the unplug for us.
-	 */
-	if (commit_transaction->t_synchronous_commit)
-		write_op = WRITE_SYNC_PLUG;
 	trace_jbd2_commit_locking(journal, commit_transaction);
 	stats.run.rs_wait = commit_transaction->t_max_wait;
 	stats.run.rs_locked = jiffies;
@@ -469,8 +462,10 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 	if (err)
 		jbd2_journal_abort(journal, err);
 
+	blk_start_plug(&plug);
 	jbd2_journal_write_revoke_records(journal, commit_transaction,
-					  write_op);
+					  WRITE_SYNC);
+	blk_finish_plug(&plug);
 
 	jbd_debug(3, "JBD: commit phase 2\n");
 
@@ -497,6 +492,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 	err = 0;
 	descriptor = NULL;
 	bufs = 0;
+	blk_start_plug(&plug);
 	while (commit_transaction->t_buffers) {
 
 		/* Find the next buffer to be journaled... */
@@ -658,7 +654,7 @@ start_journal_io:
 				clear_buffer_dirty(bh);
 				set_buffer_uptodate(bh);
 				bh->b_end_io = journal_end_buffer_io_sync;
-				submit_bh(write_op, bh);
+				submit_bh(WRITE_SYNC, bh);
 			}
 			cond_resched();
 			stats.run.rs_blocks_logged += bufs;
@@ -699,6 +695,8 @@ start_journal_io:
 			__jbd2_journal_abort_hard(journal);
 	}
 
+	blk_finish_plug(&plug);
+
 	/* Lo and behold: we have just managed to send a transaction to
            the log.  Before we can commit it, wait for the IO so far to
            complete.  Control buffers being written are on the
diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c
index 95b7967..828a0e1 100644
--- a/fs/jffs2/acl.c
+++ b/fs/jffs2/acl.c
@@ -402,7 +402,7 @@ static int jffs2_acl_setxattr(struct dentry *dentry, const char *name,
 
 	if (name[0] != '\0')
 		return -EINVAL;
-	if (!is_owner_or_cap(dentry->d_inode))
+	if (!inode_owner_or_capable(dentry->d_inode))
 		return -EPERM;
 
 	if (value) {
diff --git a/fs/jffs2/compr_zlib.c b/fs/jffs2/compr_zlib.c
index fd05a0b..5a00102 100644
--- a/fs/jffs2/compr_zlib.c
+++ b/fs/jffs2/compr_zlib.c
@@ -40,12 +40,13 @@ static z_stream inf_strm, def_strm;
 
 static int __init alloc_workspaces(void)
 {
-	def_strm.workspace = vmalloc(zlib_deflate_workspacesize());
+	def_strm.workspace = vmalloc(zlib_deflate_workspacesize(MAX_WBITS,
+							MAX_MEM_LEVEL));
 	if (!def_strm.workspace) {
-		printk(KERN_WARNING "Failed to allocate %d bytes for deflate workspace\n", zlib_deflate_workspacesize());
+		printk(KERN_WARNING "Failed to allocate %d bytes for deflate workspace\n", zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL));
 		return -ENOMEM;
 	}
-	D1(printk(KERN_DEBUG "Allocated %d bytes for deflate workspace\n", zlib_deflate_workspacesize()));
+	D1(printk(KERN_DEBUG "Allocated %d bytes for deflate workspace\n", zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL)));
 	inf_strm.workspace = vmalloc(zlib_inflate_workspacesize());
 	if (!inf_strm.workspace) {
 		printk(KERN_WARNING "Failed to allocate %d bytes for inflate workspace\n", zlib_inflate_workspacesize());
diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c
index 4f9cc04..3e93cdd 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -31,7 +31,7 @@
  *   is used to release xattr name/value pair and detach from c->xattrindex.
  * reclaim_xattr_datum(c)
  *   is used to reclaim xattr name/value pairs on the xattr name/value pair cache when
- *   memory usage by cache is over c->xdatum_mem_threshold. Currently, this threshold 
+ *   memory usage by cache is over c->xdatum_mem_threshold. Currently, this threshold
  *   is hard coded as 32KiB.
  * do_verify_xattr_datum(c, xd)
  *   is used to load the xdatum informations without name/value pair from the medium.
diff --git a/fs/jfs/Makefile b/fs/jfs/Makefile
index 3adb639..a58fa72 100644
--- a/fs/jfs/Makefile
+++ b/fs/jfs/Makefile
@@ -13,4 +13,4 @@ jfs-y    := super.o file.o inode.o namei.o jfs_mount.o jfs_umount.o \
 
 jfs-$(CONFIG_JFS_POSIX_ACL) += acl.o
 
-EXTRA_CFLAGS += -D_JFS_4K
+ccflags-y := -D_JFS_4K
diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index 9978803..eddbb37 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -352,7 +352,6 @@ const struct address_space_operations jfs_aops = {
 	.readpages	= jfs_readpages,
 	.writepage	= jfs_writepage,
 	.writepages	= jfs_writepages,
-	.sync_page	= block_sync_page,
 	.write_begin	= jfs_write_begin,
 	.write_end	= nobh_write_end,
 	.bmap		= jfs_bmap,
diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c
index afe222b..6f98a18 100644
--- a/fs/jfs/ioctl.c
+++ b/fs/jfs/ioctl.c
@@ -72,7 +72,7 @@ long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		if (err)
 			return err;
 
-		if (!is_owner_or_cap(inode)) {
+		if (!inode_owner_or_capable(inode)) {
 			err = -EACCES;
 			goto setflags_out;
 		}
diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c
index 48b44bd..6740d34 100644
--- a/fs/jfs/jfs_metapage.c
+++ b/fs/jfs/jfs_metapage.c
@@ -583,7 +583,6 @@ static void metapage_invalidatepage(struct page *page, unsigned long offset)
 const struct address_space_operations jfs_metapage_aops = {
 	.readpage	= metapage_readpage,
 	.writepage	= metapage_writepage,
-	.sync_page	= block_sync_page,
 	.releasepage	= metapage_releasepage,
 	.invalidatepage	= metapage_invalidatepage,
 	.set_page_dirty	= __set_page_dirty_nobuffers,
diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c
index 3fa4c322..24838f1 100644
--- a/fs/jfs/xattr.c
+++ b/fs/jfs/xattr.c
@@ -678,7 +678,7 @@ static int can_set_system_xattr(struct inode *inode, const char *name,
 	struct posix_acl *acl;
 	int rc;
 
-	if (!is_owner_or_cap(inode))
+	if (!inode_owner_or_capable(inode))
 		return -EPERM;
 
 	/*
diff --git a/fs/locks.c b/fs/locks.c
index 822c3d1..0a4f50d 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -414,17 +414,7 @@ static int flock64_to_posix_lock(struct file *filp, struct file_lock *fl,
 	fl->fl_ops = NULL;
 	fl->fl_lmops = NULL;
 
-	switch (l->l_type) {
-	case F_RDLCK:
-	case F_WRLCK:
-	case F_UNLCK:
-		fl->fl_type = l->l_type;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return (0);
+	return assign_type(fl, l->l_type);
 }
 #endif
 
diff --git a/fs/logfs/compr.c b/fs/logfs/compr.c
index 44bbfd2..961f02b 100644
--- a/fs/logfs/compr.c
+++ b/fs/logfs/compr.c
@@ -81,7 +81,7 @@ error:
 
 int __init logfs_compr_init(void)
 {
-	size_t size = max(zlib_deflate_workspacesize(),
+	size_t size = max(zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL),
 			zlib_inflate_workspacesize());
 	stream.workspace = vmalloc(size);
 	if (!stream.workspace)
diff --git a/fs/logfs/dev_bdev.c b/fs/logfs/dev_bdev.c
index 723bc5b..1adc8d4 100644
--- a/fs/logfs/dev_bdev.c
+++ b/fs/logfs/dev_bdev.c
@@ -39,7 +39,6 @@ static int sync_request(struct page *page, struct block_device *bdev, int rw)
 	bio.bi_end_io = request_complete;
 
 	submit_bio(rw, &bio);
-	generic_unplug_device(bdev_get_queue(bdev));
 	wait_for_completion(&complete);
 	return test_bit(BIO_UPTODATE, &bio.bi_flags) ? 0 : -EIO;
 }
@@ -168,7 +167,6 @@ static void bdev_writeseg(struct super_block *sb, u64 ofs, size_t len)
 	}
 	len = PAGE_ALIGN(len);
 	__bdev_writeseg(sb, ofs, ofs >> PAGE_SHIFT, len >> PAGE_SHIFT);
-	generic_unplug_device(bdev_get_queue(logfs_super(sb)->s_bdev));
 }
 
 
diff --git a/fs/logfs/file.c b/fs/logfs/file.c
index e86376b..c2ad702 100644
--- a/fs/logfs/file.c
+++ b/fs/logfs/file.c
@@ -196,7 +196,7 @@ long logfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		if (IS_RDONLY(inode))
 			return -EROFS;
 
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EACCES;
 
 		err = get_user(flags, (int __user *)arg);
diff --git a/fs/logfs/inode.c b/fs/logfs/inode.c
index 03b8c24..edfea7a 100644
--- a/fs/logfs/inode.c
+++ b/fs/logfs/inode.c
@@ -293,7 +293,7 @@ static int logfs_write_inode(struct inode *inode, struct writeback_control *wbc)
 	return ret;
 }
 
-/* called with inode_lock held */
+/* called with inode->i_lock held */
 static int logfs_drop_inode(struct inode *inode)
 {
 	struct logfs_super *super = logfs_super(inode->i_sb);
diff --git a/fs/minix/Kconfig b/fs/minix/Kconfig
index 0fd7ca9..6624684 100644
--- a/fs/minix/Kconfig
+++ b/fs/minix/Kconfig
@@ -15,3 +15,11 @@ config MINIX_FS
 	  module will be called minix.  Note that the file system of your root
 	  partition (the one containing the directory /) cannot be compiled as
 	  a module.
+
+config MINIX_FS_NATIVE_ENDIAN
+	def_bool MINIX_FS
+	depends on H8300 || M32R || MICROBLAZE || MIPS || S390 || SUPERH || SPARC || XTENSA || (M68K && !MMU)
+
+config MINIX_FS_BIG_ENDIAN_16BIT_INDEXED
+	def_bool MINIX_FS
+	depends on M68K && MMU
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index ae0b83f..adcdc0a 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -399,7 +399,6 @@ static sector_t minix_bmap(struct address_space *mapping, sector_t block)
 static const struct address_space_operations minix_aops = {
 	.readpage = minix_readpage,
 	.writepage = minix_writepage,
-	.sync_page = block_sync_page,
 	.write_begin = minix_write_begin,
 	.write_end = generic_write_end,
 	.bmap = minix_bmap
diff --git a/fs/minix/minix.h b/fs/minix/minix.h
index 407b1c8..341e212 100644
--- a/fs/minix/minix.h
+++ b/fs/minix/minix.h
@@ -88,4 +88,78 @@ static inline struct minix_inode_info *minix_i(struct inode *inode)
 	return list_entry(inode, struct minix_inode_info, vfs_inode);
 }
 
+#if defined(CONFIG_MINIX_FS_NATIVE_ENDIAN) && \
+	defined(CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED)
+
+#error Minix file system byte order broken
+
+#elif defined(CONFIG_MINIX_FS_NATIVE_ENDIAN)
+
+/*
+ * big-endian 32 or 64 bit indexed bitmaps on big-endian system or
+ * little-endian bitmaps on little-endian system
+ */
+
+#define minix_test_and_set_bit(nr, addr)	\
+	__test_and_set_bit((nr), (unsigned long *)(addr))
+#define minix_set_bit(nr, addr)		\
+	__set_bit((nr), (unsigned long *)(addr))
+#define minix_test_and_clear_bit(nr, addr) \
+	__test_and_clear_bit((nr), (unsigned long *)(addr))
+#define minix_test_bit(nr, addr)		\
+	test_bit((nr), (unsigned long *)(addr))
+#define minix_find_first_zero_bit(addr, size) \
+	find_first_zero_bit((unsigned long *)(addr), (size))
+
+#elif defined(CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED)
+
+/*
+ * big-endian 16bit indexed bitmaps
+ */
+
+static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size)
+{
+	const unsigned short *p = vaddr, *addr = vaddr;
+	unsigned short num;
+
+	if (!size)
+		return 0;
+
+	size = (size >> 4) + ((size & 15) > 0);
+	while (*p++ == 0xffff) {
+		if (--size == 0)
+			return (p - addr) << 4;
+	}
+
+	num = *--p;
+	return ((p - addr) << 4) + ffz(num);
+}
+
+#define minix_test_and_set_bit(nr, addr)	\
+	__test_and_set_bit((nr) ^ 16, (unsigned long *)(addr))
+#define minix_set_bit(nr, addr)	\
+	__set_bit((nr) ^ 16, (unsigned long *)(addr))
+#define minix_test_and_clear_bit(nr, addr)	\
+	__test_and_clear_bit((nr) ^ 16, (unsigned long *)(addr))
+
+static inline int minix_test_bit(int nr, const void *vaddr)
+{
+	const unsigned short *p = vaddr;
+	return (p[nr >> 4] & (1U << (nr & 15))) != 0;
+}
+
+#else
+
+/*
+ * little-endian bitmaps
+ */
+
+#define minix_test_and_set_bit	__test_and_set_bit_le
+#define minix_set_bit		__set_bit_le
+#define minix_test_and_clear_bit	__test_and_clear_bit_le
+#define minix_test_bit	test_bit_le
+#define minix_find_first_zero_bit	find_first_zero_bit_le
+
+#endif
+
 #endif /* FS_MINIX_H */
diff --git a/fs/mpage.c b/fs/mpage.c
index d78455a..0afc809 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -364,6 +364,9 @@ mpage_readpages(struct address_space *mapping, struct list_head *pages,
 	sector_t last_block_in_bio = 0;
 	struct buffer_head map_bh;
 	unsigned long first_logical_block = 0;
+	struct blk_plug plug;
+
+	blk_start_plug(&plug);
 
 	map_bh.b_state = 0;
 	map_bh.b_size = 0;
@@ -385,6 +388,7 @@ mpage_readpages(struct address_space *mapping, struct list_head *pages,
 	BUG_ON(!list_empty(pages));
 	if (bio)
 		mpage_bio_submit(READ, bio);
+	blk_finish_plug(&plug);
 	return 0;
 }
 EXPORT_SYMBOL(mpage_readpages);
@@ -666,8 +670,11 @@ int
 mpage_writepages(struct address_space *mapping,
 		struct writeback_control *wbc, get_block_t get_block)
 {
+	struct blk_plug plug;
 	int ret;
 
+	blk_start_plug(&plug);
+
 	if (!get_block)
 		ret = generic_writepages(mapping, wbc);
 	else {
@@ -682,6 +689,7 @@ mpage_writepages(struct address_space *mapping,
 		if (mpd.bio)
 			mpage_bio_submit(WRITE, mpd.bio);
 	}
+	blk_finish_plug(&plug);
 	return ret;
 }
 EXPORT_SYMBOL(mpage_writepages);
diff --git a/fs/namei.c b/fs/namei.c
index 5a9a6c3..3cb616d 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -183,6 +183,9 @@ static int acl_permission_check(struct inode *inode, int mask, unsigned int flag
 
 	mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
 
+	if (current_user_ns() != inode_userns(inode))
+		goto other_perms;
+
 	if (current_fsuid() == inode->i_uid)
 		mode >>= 6;
 	else {
@@ -196,6 +199,7 @@ static int acl_permission_check(struct inode *inode, int mask, unsigned int flag
 			mode >>= 3;
 	}
 
+other_perms:
 	/*
 	 * If the DACs are ok we don't need any capability check.
 	 */
@@ -237,7 +241,7 @@ int generic_permission(struct inode *inode, int mask, unsigned int flags,
 	 * Executable DACs are overridable if at least one exec bit is set.
 	 */
 	if (!(mask & MAY_EXEC) || execute_ok(inode))
-		if (capable(CAP_DAC_OVERRIDE))
+		if (ns_capable(inode_userns(inode), CAP_DAC_OVERRIDE))
 			return 0;
 
 	/*
@@ -245,7 +249,7 @@ int generic_permission(struct inode *inode, int mask, unsigned int flags,
 	 */
 	mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
 	if (mask == MAY_READ || (S_ISDIR(inode->i_mode) && !(mask & MAY_WRITE)))
-		if (capable(CAP_DAC_READ_SEARCH))
+		if (ns_capable(inode_userns(inode), CAP_DAC_READ_SEARCH))
 			return 0;
 
 	return -EACCES;
@@ -654,6 +658,7 @@ static inline int handle_reval_path(struct nameidata *nd)
 static inline int exec_permission(struct inode *inode, unsigned int flags)
 {
 	int ret;
+	struct user_namespace *ns = inode_userns(inode);
 
 	if (inode->i_op->permission) {
 		ret = inode->i_op->permission(inode, MAY_EXEC, flags);
@@ -666,7 +671,8 @@ static inline int exec_permission(struct inode *inode, unsigned int flags)
 	if (ret == -ECHILD)
 		return ret;
 
-	if (capable(CAP_DAC_OVERRIDE) || capable(CAP_DAC_READ_SEARCH))
+	if (ns_capable(ns, CAP_DAC_OVERRIDE) ||
+			ns_capable(ns, CAP_DAC_READ_SEARCH))
 		goto ok;
 
 	return ret;
@@ -986,6 +992,12 @@ int follow_down_one(struct path *path)
 	return 0;
 }
 
+static inline bool managed_dentry_might_block(struct dentry *dentry)
+{
+	return (dentry->d_flags & DCACHE_MANAGE_TRANSIT &&
+		dentry->d_op->d_manage(dentry, true) < 0);
+}
+
 /*
  * Skip to top of mountpoint pile in rcuwalk mode.  We abort the rcu-walk if we
  * meet a managed dentry and we're not walking to "..".  True is returned to
@@ -994,19 +1006,26 @@ int follow_down_one(struct path *path)
 static bool __follow_mount_rcu(struct nameidata *nd, struct path *path,
 			       struct inode **inode, bool reverse_transit)
 {
-	while (d_mountpoint(path->dentry)) {
+	for (;;) {
 		struct vfsmount *mounted;
-		if (unlikely(path->dentry->d_flags & DCACHE_MANAGE_TRANSIT) &&
-		    !reverse_transit &&
-		    path->dentry->d_op->d_manage(path->dentry, true) < 0)
+		/*
+		 * Don't forget we might have a non-mountpoint managed dentry
+		 * that wants to block transit.
+		 */
+		*inode = path->dentry->d_inode;
+		if (!reverse_transit &&
+		     unlikely(managed_dentry_might_block(path->dentry)))
 			return false;
+
+		if (!d_mountpoint(path->dentry))
+			break;
+
 		mounted = __lookup_mnt(path->mnt, path->dentry, 1);
 		if (!mounted)
 			break;
 		path->mnt = mounted;
 		path->dentry = mounted->mnt_root;
 		nd->seq = read_seqcount_begin(&path->dentry->d_seq);
-		*inode = path->dentry->d_inode;
 	}
 
 	if (unlikely(path->dentry->d_flags & DCACHE_NEED_AUTOMOUNT))
@@ -1644,13 +1663,16 @@ static int path_lookupat(int dfd, const char *name,
 			err = -ECHILD;
 	}
 
-	if (!err)
+	if (!err) {
 		err = handle_reval_path(nd);
+		if (err)
+			path_put(&nd->path);
+	}
 
 	if (!err && nd->flags & LOOKUP_DIRECTORY) {
 		if (!nd->inode->i_op->lookup) {
 			path_put(&nd->path);
-			return -ENOTDIR;
+			err = -ENOTDIR;
 		}
 	}
 
@@ -1842,11 +1864,15 @@ static inline int check_sticky(struct inode *dir, struct inode *inode)
 
 	if (!(dir->i_mode & S_ISVTX))
 		return 0;
+	if (current_user_ns() != inode_userns(inode))
+		goto other_userns;
 	if (inode->i_uid == fsuid)
 		return 0;
 	if (dir->i_uid == fsuid)
 		return 0;
-	return !capable(CAP_FOWNER);
+
+other_userns:
+	return !ns_capable(inode_userns(inode), CAP_FOWNER);
 }
 
 /*
@@ -2026,7 +2052,7 @@ static int may_open(struct path *path, int acc_mode, int flag)
 	}
 
 	/* O_NOATIME can only be set by the owner or superuser */
-	if (flag & O_NOATIME && !is_owner_or_cap(inode))
+	if (flag & O_NOATIME && !inode_owner_or_capable(inode))
 		return -EPERM;
 
 	/*
@@ -2440,7 +2466,8 @@ int vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 	if (error)
 		return error;
 
-	if ((S_ISCHR(mode) || S_ISBLK(mode)) && !capable(CAP_MKNOD))
+	if ((S_ISCHR(mode) || S_ISBLK(mode)) &&
+	    !ns_capable(inode_userns(dir), CAP_MKNOD))
 		return -EPERM;
 
 	if (!dir->i_op->mknod)
diff --git a/fs/namespace.c b/fs/namespace.c
index 9263995..7dba2ed 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2701,7 +2701,7 @@ void __init mnt_init(void)
 	if (!mount_hashtable)
 		panic("Failed to allocate mount hash table\n");
 
-	printk("Mount-cache hash table entries: %lu\n", HASH_SIZE);
+	printk(KERN_INFO "Mount-cache hash table entries: %lu\n", HASH_SIZE);
 
 	for (u = 0; u < HASH_SIZE; u++)
 		INIT_LIST_HEAD(&mount_hashtable[u]);
diff --git a/fs/ncpfs/Makefile b/fs/ncpfs/Makefile
index 68ea095..c66af56 100644
--- a/fs/ncpfs/Makefile
+++ b/fs/ncpfs/Makefile
@@ -11,6 +11,6 @@ ncpfs-$(CONFIG_NCPFS_EXTRAS)   += symlink.o
 ncpfs-$(CONFIG_NCPFS_NFS_NS)   += symlink.o
 
 # If you want debugging output, please uncomment the following line
-# EXTRA_CFLAGS += -DDEBUG_NCP=1
+# ccflags-y := -DDEBUG_NCP=1
 
 CFLAGS_ncplib_kernel.o := -finline-functions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index abdf38d..7237672 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -44,6 +44,7 @@
 /* #define NFS_DEBUG_VERBOSE 1 */
 
 static int nfs_opendir(struct inode *, struct file *);
+static int nfs_closedir(struct inode *, struct file *);
 static int nfs_readdir(struct file *, void *, filldir_t);
 static struct dentry *nfs_lookup(struct inode *, struct dentry *, struct nameidata *);
 static int nfs_create(struct inode *, struct dentry *, int, struct nameidata *);
@@ -64,7 +65,7 @@ const struct file_operations nfs_dir_operations = {
 	.read		= generic_read_dir,
 	.readdir	= nfs_readdir,
 	.open		= nfs_opendir,
-	.release	= nfs_release,
+	.release	= nfs_closedir,
 	.fsync		= nfs_fsync_dir,
 };
 
@@ -133,13 +134,35 @@ const struct inode_operations nfs4_dir_inode_operations = {
 
 #endif /* CONFIG_NFS_V4 */
 
+static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct rpc_cred *cred)
+{
+	struct nfs_open_dir_context *ctx;
+	ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+	if (ctx != NULL) {
+		ctx->duped = 0;
+		ctx->dir_cookie = 0;
+		ctx->dup_cookie = 0;
+		ctx->cred = get_rpccred(cred);
+	} else
+		ctx = ERR_PTR(-ENOMEM);
+	return ctx;
+}
+
+static void put_nfs_open_dir_context(struct nfs_open_dir_context *ctx)
+{
+	put_rpccred(ctx->cred);
+	kfree(ctx);
+}
+
 /*
  * Open file
  */
 static int
 nfs_opendir(struct inode *inode, struct file *filp)
 {
-	int res;
+	int res = 0;
+	struct nfs_open_dir_context *ctx;
+	struct rpc_cred *cred;
 
 	dfprintk(FILE, "NFS: open dir(%s/%s)\n",
 			filp->f_path.dentry->d_parent->d_name.name,
@@ -147,8 +170,15 @@ nfs_opendir(struct inode *inode, struct file *filp)
 
 	nfs_inc_stats(inode, NFSIOS_VFSOPEN);
 
-	/* Call generic open code in order to cache credentials */
-	res = nfs_open(inode, filp);
+	cred = rpc_lookup_cred();
+	if (IS_ERR(cred))
+		return PTR_ERR(cred);
+	ctx = alloc_nfs_open_dir_context(cred);
+	if (IS_ERR(ctx)) {
+		res = PTR_ERR(ctx);
+		goto out;
+	}
+	filp->private_data = ctx;
 	if (filp->f_path.dentry == filp->f_path.mnt->mnt_root) {
 		/* This is a mountpoint, so d_revalidate will never
 		 * have been called, so we need to refresh the
@@ -156,9 +186,18 @@ nfs_opendir(struct inode *inode, struct file *filp)
 		 */
 		__nfs_revalidate_inode(NFS_SERVER(inode), inode);
 	}
+out:
+	put_rpccred(cred);
 	return res;
 }
 
+static int
+nfs_closedir(struct inode *inode, struct file *filp)
+{
+	put_nfs_open_dir_context(filp->private_data);
+	return 0;
+}
+
 struct nfs_cache_array_entry {
 	u64 cookie;
 	u64 ino;
@@ -284,19 +323,20 @@ int nfs_readdir_search_for_pos(struct nfs_cache_array *array, nfs_readdir_descri
 {
 	loff_t diff = desc->file->f_pos - desc->current_index;
 	unsigned int index;
+	struct nfs_open_dir_context *ctx = desc->file->private_data;
 
 	if (diff < 0)
 		goto out_eof;
 	if (diff >= array->size) {
 		if (array->eof_index >= 0)
 			goto out_eof;
-		desc->current_index += array->size;
 		return -EAGAIN;
 	}
 
 	index = (unsigned int)diff;
 	*desc->dir_cookie = array->array[index].cookie;
 	desc->cache_entry_index = index;
+	ctx->duped = 0;
 	return 0;
 out_eof:
 	desc->eof = 1;
@@ -307,10 +347,18 @@ static
 int nfs_readdir_search_for_cookie(struct nfs_cache_array *array, nfs_readdir_descriptor_t *desc)
 {
 	int i;
+	loff_t new_pos;
 	int status = -EAGAIN;
+	struct nfs_open_dir_context *ctx = desc->file->private_data;
 
 	for (i = 0; i < array->size; i++) {
 		if (array->array[i].cookie == *desc->dir_cookie) {
+			new_pos = desc->current_index + i;
+			if (new_pos < desc->file->f_pos) {
+				ctx->dup_cookie = *desc->dir_cookie;
+				ctx->duped = 1;
+			}
+			desc->file->f_pos = new_pos;
 			desc->cache_entry_index = i;
 			return 0;
 		}
@@ -342,6 +390,7 @@ int nfs_readdir_search_array(nfs_readdir_descriptor_t *desc)
 
 	if (status == -EAGAIN) {
 		desc->last_cookie = array->last_cookie;
+		desc->current_index += array->size;
 		desc->page_index++;
 	}
 	nfs_readdir_release_array(desc->page);
@@ -354,7 +403,8 @@ static
 int nfs_readdir_xdr_filler(struct page **pages, nfs_readdir_descriptor_t *desc,
 			struct nfs_entry *entry, struct file *file, struct inode *inode)
 {
-	struct rpc_cred	*cred = nfs_file_cred(file);
+	struct nfs_open_dir_context *ctx = file->private_data;
+	struct rpc_cred	*cred = ctx->cred;
 	unsigned long	timestamp, gencount;
 	int		error;
 
@@ -693,6 +743,20 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
 	int i = 0;
 	int res = 0;
 	struct nfs_cache_array *array = NULL;
+	struct nfs_open_dir_context *ctx = file->private_data;
+
+	if (ctx->duped != 0 && ctx->dup_cookie == *desc->dir_cookie) {
+		if (printk_ratelimit()) {
+			pr_notice("NFS: directory %s/%s contains a readdir loop.  "
+				"Please contact your server vendor.  "
+				"Offending cookie: %llu\n",
+				file->f_dentry->d_parent->d_name.name,
+				file->f_dentry->d_name.name,
+				*desc->dir_cookie);
+		}
+		res = -ELOOP;
+		goto out;
+	}
 
 	array = nfs_readdir_get_array(desc->page);
 	if (IS_ERR(array)) {
@@ -785,6 +849,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 	struct inode	*inode = dentry->d_inode;
 	nfs_readdir_descriptor_t my_desc,
 			*desc = &my_desc;
+	struct nfs_open_dir_context *dir_ctx = filp->private_data;
 	int res;
 
 	dfprintk(FILE, "NFS: readdir(%s/%s) starting at cookie %llu\n",
@@ -801,7 +866,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 	memset(desc, 0, sizeof(*desc));
 
 	desc->file = filp;
-	desc->dir_cookie = &nfs_file_open_context(filp)->dir_cookie;
+	desc->dir_cookie = &dir_ctx->dir_cookie;
 	desc->decode = NFS_PROTO(inode)->decode_dirent;
 	desc->plus = NFS_USE_READDIRPLUS(inode);
 
@@ -853,6 +918,7 @@ static loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int origin)
 {
 	struct dentry *dentry = filp->f_path.dentry;
 	struct inode *inode = dentry->d_inode;
+	struct nfs_open_dir_context *dir_ctx = filp->private_data;
 
 	dfprintk(FILE, "NFS: llseek dir(%s/%s, %lld, %d)\n",
 			dentry->d_parent->d_name.name,
@@ -872,7 +938,8 @@ static loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int origin)
 	}
 	if (offset != filp->f_pos) {
 		filp->f_pos = offset;
-		nfs_file_open_context(filp)->dir_cookie = 0;
+		dir_ctx->dir_cookie = 0;
+		dir_ctx->duped = 0;
 	}
 out:
 	mutex_unlock(&inode->i_mutex);
@@ -1068,7 +1135,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
 	if (fhandle == NULL || fattr == NULL)
 		goto out_error;
 
-	error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr);
+	error = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, &dentry->d_name, fhandle, fattr);
 	if (error)
 		goto out_bad;
 	if (nfs_compare_fh(NFS_FH(inode), fhandle))
@@ -1224,7 +1291,7 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
 	parent = dentry->d_parent;
 	/* Protect against concurrent sillydeletes */
 	nfs_block_sillyrename(parent);
-	error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr);
+	error = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, &dentry->d_name, fhandle, fattr);
 	if (error == -ENOENT)
 		goto no_entry;
 	if (error < 0) {
@@ -1562,7 +1629,7 @@ int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fhandle,
 	if (dentry->d_inode)
 		goto out;
 	if (fhandle->size == 0) {
-		error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr);
+		error = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, &dentry->d_name, fhandle, fattr);
 		if (error)
 			goto out_error;
 	}
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index d85a534..3ac5bd6 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -326,6 +326,9 @@ nfs_file_fsync(struct file *file, int datasync)
 		ret = xchg(&ctx->error, 0);
 	if (!ret && status < 0)
 		ret = status;
+	if (!ret && !datasync)
+		/* application has asked for meta-data sync */
+		ret = pnfs_layoutcommit_inode(inode, true);
 	return ret;
 }
 
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index 1084792..dcb6154 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -222,6 +222,10 @@ struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh,
 		goto out;
 	}
 
+	if (fattr->valid & NFS_ATTR_FATTR_FSID &&
+	    !nfs_fsid_equal(&server->fsid, &fattr->fsid))
+		memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
+
 	inode = nfs_fhget(sb, mntfh, fattr);
 	if (IS_ERR(inode)) {
 		dprintk("nfs_get_root: get root inode failed\n");
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 01768e5..57bb31a 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -254,7 +254,9 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
 	struct inode *inode = ERR_PTR(-ENOENT);
 	unsigned long hash;
 
-	if ((fattr->valid & NFS_ATTR_FATTR_FILEID) == 0)
+	nfs_attr_check_mountpoint(sb, fattr);
+
+	if ((fattr->valid & NFS_ATTR_FATTR_FILEID) == 0 && (fattr->valid & NFS_ATTR_FATTR_MOUNTPOINT) == 0)
 		goto out_no_inode;
 	if ((fattr->valid & NFS_ATTR_FATTR_TYPE) == 0)
 		goto out_no_inode;
@@ -298,8 +300,8 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
 			if (nfs_server_capable(inode, NFS_CAP_READDIRPLUS))
 				set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
 			/* Deal with crossing mountpoints */
-			if ((fattr->valid & NFS_ATTR_FATTR_FSID)
-					&& !nfs_fsid_equal(&NFS_SB(sb)->fsid, &fattr->fsid)) {
+			if (fattr->valid & NFS_ATTR_FATTR_MOUNTPOINT ||
+					fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) {
 				if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
 					inode->i_op = &nfs_referral_inode_operations;
 				else
@@ -639,7 +641,6 @@ struct nfs_open_context *alloc_nfs_open_context(struct path *path, struct rpc_cr
 		ctx->mode = f_mode;
 		ctx->flags = 0;
 		ctx->error = 0;
-		ctx->dir_cookie = 0;
 		nfs_init_lock_context(&ctx->lock_context);
 		ctx->lock_context.open_context = ctx;
 		INIT_LIST_HEAD(&ctx->list);
@@ -1471,6 +1472,7 @@ static inline void nfs4_init_once(struct nfs_inode *nfsi)
 	nfsi->delegation_state = 0;
 	init_rwsem(&nfsi->rwsem);
 	nfsi->layout = NULL;
+	atomic_set(&nfsi->commits_outstanding, 0);
 #endif
 }
 
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 72e0bdd..ce118ce 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -39,6 +39,12 @@ static inline int nfs4_has_persistent_session(const struct nfs_client *clp)
 	return 0;
 }
 
+static inline void nfs_attr_check_mountpoint(struct super_block *parent, struct nfs_fattr *fattr)
+{
+	if (!nfs_fsid_equal(&NFS_SB(parent)->fsid, &fattr->fsid))
+		fattr->valid |= NFS_ATTR_FATTR_MOUNTPOINT;
+}
+
 struct nfs_clone_mount {
 	const struct super_block *sb;
 	const struct dentry *dentry;
@@ -214,6 +220,7 @@ extern const u32 nfs41_maxwrite_overhead;
 /* nfs4proc.c */
 #ifdef CONFIG_NFS_V4
 extern struct rpc_procinfo nfs4_procedures[];
+void nfs_fixup_secinfo_attributes(struct nfs_fattr *, struct nfs_fh *);
 #endif
 
 extern int nfs4_init_ds_session(struct nfs_client *clp);
@@ -276,11 +283,25 @@ extern int nfs_initiate_read(struct nfs_read_data *data, struct rpc_clnt *clnt,
 extern void nfs_read_prepare(struct rpc_task *task, void *calldata);
 
 /* write.c */
+extern void nfs_commit_free(struct nfs_write_data *p);
 extern int nfs_initiate_write(struct nfs_write_data *data,
 			      struct rpc_clnt *clnt,
 			      const struct rpc_call_ops *call_ops,
 			      int how);
 extern void nfs_write_prepare(struct rpc_task *task, void *calldata);
+extern int nfs_initiate_commit(struct nfs_write_data *data,
+			       struct rpc_clnt *clnt,
+			       const struct rpc_call_ops *call_ops,
+			       int how);
+extern void nfs_init_commit(struct nfs_write_data *data,
+			    struct list_head *head,
+			    struct pnfs_layout_segment *lseg);
+void nfs_retry_commit(struct list_head *page_list,
+		      struct pnfs_layout_segment *lseg);
+void nfs_commit_clear_lock(struct nfs_inode *nfsi);
+void nfs_commitdata_release(void *data);
+void nfs_commit_release_pages(struct nfs_write_data *data);
+
 #ifdef CONFIG_MIGRATION
 extern int nfs_migrate_page(struct address_space *,
 		struct page *, struct page *);
@@ -296,12 +317,14 @@ extern int nfs4_init_client(struct nfs_client *clp,
 			    rpc_authflavor_t authflavour,
 			    int noresvport);
 extern void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data);
-extern int _nfs4_call_sync(struct nfs_server *server,
+extern int _nfs4_call_sync(struct rpc_clnt *clnt,
+			   struct nfs_server *server,
 			   struct rpc_message *msg,
 			   struct nfs4_sequence_args *args,
 			   struct nfs4_sequence_res *res,
 			   int cache_reply);
-extern int _nfs4_call_sync_session(struct nfs_server *server,
+extern int _nfs4_call_sync_session(struct rpc_clnt *clnt,
+				   struct nfs_server *server,
 				   struct rpc_message *msg,
 				   struct nfs4_sequence_args *args,
 				   struct nfs4_sequence_res *res,
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index c0b8344..9166fcb 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -15,6 +15,7 @@
 #include <linux/string.h>
 #include <linux/sunrpc/clnt.h>
 #include <linux/vfs.h>
+#include <linux/sunrpc/gss_api.h>
 #include "internal.h"
 
 #define NFSDBG_FACILITY		NFSDBG_VFS
@@ -27,7 +28,8 @@ int nfs_mountpoint_expiry_timeout = 500 * HZ;
 
 static struct vfsmount *nfs_do_submount(struct dentry *dentry,
 					struct nfs_fh *fh,
-					struct nfs_fattr *fattr);
+					struct nfs_fattr *fattr,
+					rpc_authflavor_t authflavor);
 
 /*
  * nfs_path - reconstruct the path given an arbitrary dentry
@@ -98,7 +100,7 @@ rename_retry:
 		namelen--;
 	buflen -= namelen;
 	if (buflen < 0) {
-		spin_lock(&dentry->d_lock);
+		spin_unlock(&dentry->d_lock);
 		rcu_read_unlock();
 		goto Elong;
 	}
@@ -108,7 +110,7 @@ rename_retry:
 	rcu_read_unlock();
 	return end;
 Elong_unlock:
-	spin_lock(&dentry->d_lock);
+	spin_unlock(&dentry->d_lock);
 	rcu_read_unlock();
 	if (read_seqretry(&rename_lock, seq))
 		goto rename_retry;
@@ -116,6 +118,102 @@ Elong:
 	return ERR_PTR(-ENAMETOOLONG);
 }
 
+#ifdef CONFIG_NFS_V4
+static rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *flavors, struct inode *inode)
+{
+	struct gss_api_mech *mech;
+	struct xdr_netobj oid;
+	int i;
+	rpc_authflavor_t pseudoflavor = RPC_AUTH_UNIX;
+
+	for (i = 0; i < flavors->num_flavors; i++) {
+		struct nfs4_secinfo_flavor *flavor;
+		flavor = &flavors->flavors[i];
+
+		if (flavor->flavor == RPC_AUTH_NULL || flavor->flavor == RPC_AUTH_UNIX) {
+			pseudoflavor = flavor->flavor;
+			break;
+		} else if (flavor->flavor == RPC_AUTH_GSS) {
+			oid.len  = flavor->gss.sec_oid4.len;
+			oid.data = flavor->gss.sec_oid4.data;
+			mech = gss_mech_get_by_OID(&oid);
+			if (!mech)
+				continue;
+			pseudoflavor = gss_svc_to_pseudoflavor(mech, flavor->gss.service);
+			gss_mech_put(mech);
+			break;
+		}
+	}
+
+	return pseudoflavor;
+}
+
+static rpc_authflavor_t nfs_negotiate_security(const struct dentry *parent, const struct dentry *dentry)
+{
+	int status = 0;
+	struct page *page;
+	struct nfs4_secinfo_flavors *flavors;
+	int (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
+	rpc_authflavor_t flavor = RPC_AUTH_UNIX;
+
+	secinfo = NFS_PROTO(parent->d_inode)->secinfo;
+	if (secinfo != NULL) {
+		page = alloc_page(GFP_KERNEL);
+		if (!page) {
+			status = -ENOMEM;
+			goto out;
+		}
+		flavors = page_address(page);
+		status = secinfo(parent->d_inode, &dentry->d_name, flavors);
+		flavor = nfs_find_best_sec(flavors, dentry->d_inode);
+		put_page(page);
+	}
+
+	return flavor;
+
+out:
+	status = -ENOMEM;
+	return status;
+}
+
+static rpc_authflavor_t nfs_lookup_with_sec(struct nfs_server *server, struct dentry *parent,
+				     struct dentry *dentry, struct path *path,
+				     struct nfs_fh *fh, struct nfs_fattr *fattr)
+{
+	rpc_authflavor_t flavor;
+	struct rpc_clnt *clone;
+	struct rpc_auth *auth;
+	int err;
+
+	flavor = nfs_negotiate_security(parent, path->dentry);
+	if (flavor < 0)
+		goto out;
+	clone  = rpc_clone_client(server->client);
+	auth   = rpcauth_create(flavor, clone);
+	if (!auth) {
+		flavor = -EIO;
+		goto out_shutdown;
+	}
+	err = server->nfs_client->rpc_ops->lookup(clone, parent->d_inode,
+						  &path->dentry->d_name,
+						  fh, fattr);
+	if (err < 0)
+		flavor = err;
+out_shutdown:
+	rpc_shutdown_client(clone);
+out:
+	return flavor;
+}
+#else /* CONFIG_NFS_V4 */
+static inline rpc_authflavor_t nfs_lookup_with_sec(struct nfs_server *server,
+				     struct dentry *parent, struct dentry *dentry,
+				     struct path *path, struct nfs_fh *fh,
+				     struct nfs_fattr *fattr)
+{
+	return -EPERM;
+}
+#endif /* CONFIG_NFS_V4 */
+
 /*
  * nfs_d_automount - Handle crossing a mountpoint on the server
  * @path - The mountpoint
@@ -136,6 +234,7 @@ struct vfsmount *nfs_d_automount(struct path *path)
 	struct nfs_fh *fh = NULL;
 	struct nfs_fattr *fattr = NULL;
 	int err;
+	rpc_authflavor_t flavor = 1;
 
 	dprintk("--> nfs_d_automount()\n");
 
@@ -153,9 +252,16 @@ struct vfsmount *nfs_d_automount(struct path *path)
 
 	/* Look it up again to get its attributes */
 	parent = dget_parent(path->dentry);
-	err = server->nfs_client->rpc_ops->lookup(parent->d_inode,
+	err = server->nfs_client->rpc_ops->lookup(server->client, parent->d_inode,
 						  &path->dentry->d_name,
 						  fh, fattr);
+	if (err == -EPERM) {
+		flavor = nfs_lookup_with_sec(server, parent, path->dentry, path, fh, fattr);
+		if (flavor < 0)
+			err = flavor;
+		else
+			err = 0;
+	}
 	dput(parent);
 	if (err != 0) {
 		mnt = ERR_PTR(err);
@@ -165,7 +271,7 @@ struct vfsmount *nfs_d_automount(struct path *path)
 	if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
 		mnt = nfs_do_refmount(path->dentry);
 	else
-		mnt = nfs_do_submount(path->dentry, fh, fattr);
+		mnt = nfs_do_submount(path->dentry, fh, fattr, flavor);
 	if (IS_ERR(mnt))
 		goto out;
 
@@ -232,17 +338,20 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
  * @dentry - parent directory
  * @fh - filehandle for new root dentry
  * @fattr - attributes for new root inode
+ * @authflavor - security flavor to use when performing the mount
  *
  */
 static struct vfsmount *nfs_do_submount(struct dentry *dentry,
 					struct nfs_fh *fh,
-					struct nfs_fattr *fattr)
+					struct nfs_fattr *fattr,
+					rpc_authflavor_t authflavor)
 {
 	struct nfs_clone_mount mountdata = {
 		.sb = dentry->d_sb,
 		.dentry = dentry,
 		.fh = fh,
 		.fattr = fattr,
+		.authflavor = authflavor,
 	};
 	struct vfsmount *mnt = ERR_PTR(-ENOMEM);
 	char *page = (char *) __get_free_page(GFP_USER);
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index d0c80d8..38053d8 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -141,7 +141,7 @@ nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 }
 
 static int
-nfs3_proc_lookup(struct inode *dir, struct qstr *name,
+nfs3_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name,
 		 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
 {
 	struct nfs3_diropargs	arg = {
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index c64be1c..e1c261d 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -57,7 +57,8 @@ enum nfs4_session_state {
 struct nfs4_minor_version_ops {
 	u32	minor_version;
 
-	int	(*call_sync)(struct nfs_server *server,
+	int	(*call_sync)(struct rpc_clnt *clnt,
+			struct nfs_server *server,
 			struct rpc_message *msg,
 			struct nfs4_sequence_args *args,
 			struct nfs4_sequence_res *res,
@@ -262,6 +263,8 @@ extern int nfs4_proc_destroy_session(struct nfs4_session *);
 extern int nfs4_init_session(struct nfs_server *server);
 extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
 		struct nfs_fsinfo *fsinfo);
+extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data,
+				  bool sync);
 
 static inline bool
 is_ds_only_client(struct nfs_client *clp)
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index 4285584..6f8192f 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -154,6 +154,23 @@ static int filelayout_read_done_cb(struct rpc_task *task,
 }
 
 /*
+ * We reference the rpc_cred of the first WRITE that triggers the need for
+ * a LAYOUTCOMMIT, and use it to send the layoutcommit compound.
+ * rfc5661 is not clear about which credential should be used.
+ */
+static void
+filelayout_set_layoutcommit(struct nfs_write_data *wdata)
+{
+	if (FILELAYOUT_LSEG(wdata->lseg)->commit_through_mds ||
+	    wdata->res.verf->committed == NFS_FILE_SYNC)
+		return;
+
+	pnfs_set_layoutcommit(wdata);
+	dprintk("%s ionde %lu pls_end_pos %lu\n", __func__, wdata->inode->i_ino,
+		(unsigned long) wdata->lseg->pls_end_pos);
+}
+
+/*
  * Call ops for the async read/write cases
  * In the case of dense layouts, the offset needs to be reset to its
  * original value.
@@ -210,6 +227,38 @@ static int filelayout_write_done_cb(struct rpc_task *task,
 		return -EAGAIN;
 	}
 
+	filelayout_set_layoutcommit(data);
+	return 0;
+}
+
+/* Fake up some data that will cause nfs_commit_release to retry the writes. */
+static void prepare_to_resend_writes(struct nfs_write_data *data)
+{
+	struct nfs_page *first = nfs_list_entry(data->pages.next);
+
+	data->task.tk_status = 0;
+	memcpy(data->verf.verifier, first->wb_verf.verifier,
+	       sizeof(first->wb_verf.verifier));
+	data->verf.verifier[0]++; /* ensure verifier mismatch */
+}
+
+static int filelayout_commit_done_cb(struct rpc_task *task,
+				     struct nfs_write_data *data)
+{
+	int reset = 0;
+
+	if (filelayout_async_handle_error(task, data->args.context->state,
+					  data->ds_clp, &reset) == -EAGAIN) {
+		dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
+			__func__, data->ds_clp, data->ds_clp->cl_session);
+		if (reset) {
+			prepare_to_resend_writes(data);
+			filelayout_set_lo_fail(data->lseg);
+		} else
+			nfs_restart_rpc(task, data->ds_clp);
+		return -EAGAIN;
+	}
+
 	return 0;
 }
 
@@ -240,6 +289,16 @@ static void filelayout_write_release(void *data)
 	wdata->mds_ops->rpc_release(data);
 }
 
+static void filelayout_commit_release(void *data)
+{
+	struct nfs_write_data *wdata = (struct nfs_write_data *)data;
+
+	nfs_commit_release_pages(wdata);
+	if (atomic_dec_and_test(&NFS_I(wdata->inode)->commits_outstanding))
+		nfs_commit_clear_lock(NFS_I(wdata->inode));
+	nfs_commitdata_release(wdata);
+}
+
 struct rpc_call_ops filelayout_read_call_ops = {
 	.rpc_call_prepare = filelayout_read_prepare,
 	.rpc_call_done = filelayout_read_call_done,
@@ -252,6 +311,12 @@ struct rpc_call_ops filelayout_write_call_ops = {
 	.rpc_release = filelayout_write_release,
 };
 
+struct rpc_call_ops filelayout_commit_call_ops = {
+	.rpc_call_prepare = filelayout_write_prepare,
+	.rpc_call_done = filelayout_write_call_done,
+	.rpc_release = filelayout_commit_release,
+};
+
 static enum pnfs_try_status
 filelayout_read_pagelist(struct nfs_read_data *data)
 {
@@ -320,10 +385,6 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync)
 		data->inode->i_ino, sync, (size_t) data->args.count, offset,
 		ntohl(ds->ds_ip_addr), ntohs(ds->ds_port));
 
-	/* We can't handle commit to ds yet */
-	if (!FILELAYOUT_LSEG(lseg)->commit_through_mds)
-		data->args.stable = NFS_FILE_SYNC;
-
 	data->write_done_cb = filelayout_write_done_cb;
 	data->ds_clp = ds->ds_clp;
 	fh = nfs4_fl_select_ds_fh(lseg, j);
@@ -441,12 +502,33 @@ filelayout_decode_layout(struct pnfs_layout_hdr *flo,
 			 struct nfs4_layoutget_res *lgr,
 			 struct nfs4_deviceid *id)
 {
-	uint32_t *p = (uint32_t *)lgr->layout.buf;
+	struct xdr_stream stream;
+	struct xdr_buf buf = {
+		.pages =  lgr->layoutp->pages,
+		.page_len =  lgr->layoutp->len,
+		.buflen =  lgr->layoutp->len,
+		.len = lgr->layoutp->len,
+	};
+	struct page *scratch;
+	__be32 *p;
 	uint32_t nfl_util;
 	int i;
 
 	dprintk("%s: set_layout_map Begin\n", __func__);
 
+	scratch = alloc_page(GFP_KERNEL);
+	if (!scratch)
+		return -ENOMEM;
+
+	xdr_init_decode(&stream, &buf, NULL);
+	xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE);
+
+	/* 20 = ufl_util (4), first_stripe_index (4), pattern_offset (8),
+	 * num_fh (4) */
+	p = xdr_inline_decode(&stream, NFS4_DEVICEID4_SIZE + 20);
+	if (unlikely(!p))
+		goto out_err;
+
 	memcpy(id, p, sizeof(*id));
 	p += XDR_QUADLEN(NFS4_DEVICEID4_SIZE);
 	print_deviceid(id);
@@ -468,32 +550,57 @@ filelayout_decode_layout(struct pnfs_layout_hdr *flo,
 		__func__, nfl_util, fl->num_fh, fl->first_stripe_index,
 		fl->pattern_offset);
 
+	if (!fl->num_fh)
+		goto out_err;
+
 	fl->fh_array = kzalloc(fl->num_fh * sizeof(struct nfs_fh *),
 			       GFP_KERNEL);
 	if (!fl->fh_array)
-		return -ENOMEM;
+		goto out_err;
 
 	for (i = 0; i < fl->num_fh; i++) {
 		/* Do we want to use a mempool here? */
 		fl->fh_array[i] = kmalloc(sizeof(struct nfs_fh), GFP_KERNEL);
-		if (!fl->fh_array[i]) {
-			filelayout_free_fh_array(fl);
-			return -ENOMEM;
-		}
+		if (!fl->fh_array[i])
+			goto out_err_free;
+
+		p = xdr_inline_decode(&stream, 4);
+		if (unlikely(!p))
+			goto out_err_free;
 		fl->fh_array[i]->size = be32_to_cpup(p++);
 		if (sizeof(struct nfs_fh) < fl->fh_array[i]->size) {
 			printk(KERN_ERR "Too big fh %d received %d\n",
 			       i, fl->fh_array[i]->size);
-			filelayout_free_fh_array(fl);
-			return -EIO;
+			goto out_err_free;
 		}
+
+		p = xdr_inline_decode(&stream, fl->fh_array[i]->size);
+		if (unlikely(!p))
+			goto out_err_free;
 		memcpy(fl->fh_array[i]->data, p, fl->fh_array[i]->size);
-		p += XDR_QUADLEN(fl->fh_array[i]->size);
 		dprintk("DEBUG: %s: fh len %d\n", __func__,
 			fl->fh_array[i]->size);
 	}
 
+	__free_page(scratch);
 	return 0;
+
+out_err_free:
+	filelayout_free_fh_array(fl);
+out_err:
+	__free_page(scratch);
+	return -EIO;
+}
+
+static void
+filelayout_free_lseg(struct pnfs_layout_segment *lseg)
+{
+	struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg);
+
+	dprintk("--> %s\n", __func__);
+	nfs4_fl_put_deviceid(fl->dsaddr);
+	kfree(fl->commit_buckets);
+	_filelayout_free_lseg(fl);
 }
 
 static struct pnfs_layout_segment *
@@ -514,17 +621,28 @@ filelayout_alloc_lseg(struct pnfs_layout_hdr *layoutid,
 		_filelayout_free_lseg(fl);
 		return NULL;
 	}
-	return &fl->generic_hdr;
-}
 
-static void
-filelayout_free_lseg(struct pnfs_layout_segment *lseg)
-{
-	struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg);
-
-	dprintk("--> %s\n", __func__);
-	nfs4_fl_put_deviceid(fl->dsaddr);
-	_filelayout_free_lseg(fl);
+	/* This assumes there is only one IOMODE_RW lseg.  What
+	 * we really want to do is have a layout_hdr level
+	 * dictionary of <multipath_list4, fh> keys, each
+	 * associated with a struct list_head, populated by calls
+	 * to filelayout_write_pagelist().
+	 * */
+	if ((!fl->commit_through_mds) && (lgr->range.iomode == IOMODE_RW)) {
+		int i;
+		int size = (fl->stripe_type == STRIPE_SPARSE) ?
+			fl->dsaddr->ds_num : fl->dsaddr->stripe_count;
+
+		fl->commit_buckets = kcalloc(size, sizeof(struct list_head), GFP_KERNEL);
+		if (!fl->commit_buckets) {
+			filelayout_free_lseg(&fl->generic_hdr);
+			return NULL;
+		}
+		fl->number_of_buckets = size;
+		for (i = 0; i < size; i++)
+			INIT_LIST_HEAD(&fl->commit_buckets[i]);
+	}
+	return &fl->generic_hdr;
 }
 
 /*
@@ -552,6 +670,191 @@ filelayout_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev,
 	return (p_stripe == r_stripe);
 }
 
+static bool filelayout_mark_pnfs_commit(struct pnfs_layout_segment *lseg)
+{
+	return !FILELAYOUT_LSEG(lseg)->commit_through_mds;
+}
+
+static u32 select_bucket_index(struct nfs4_filelayout_segment *fl, u32 j)
+{
+	if (fl->stripe_type == STRIPE_SPARSE)
+		return nfs4_fl_calc_ds_index(&fl->generic_hdr, j);
+	else
+		return j;
+}
+
+struct list_head *filelayout_choose_commit_list(struct nfs_page *req)
+{
+	struct pnfs_layout_segment *lseg = req->wb_commit_lseg;
+	struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg);
+	u32 i, j;
+	struct list_head *list;
+
+	/* Note that we are calling nfs4_fl_calc_j_index on each page
+	 * that ends up being committed to a data server.  An attractive
+	 * alternative is to add a field to nfs_write_data and nfs_page
+	 * to store the value calculated in filelayout_write_pagelist
+	 * and just use that here.
+	 */
+	j = nfs4_fl_calc_j_index(lseg,
+				 (loff_t)req->wb_index << PAGE_CACHE_SHIFT);
+	i = select_bucket_index(fl, j);
+	list = &fl->commit_buckets[i];
+	if (list_empty(list)) {
+		/* Non-empty buckets hold a reference on the lseg */
+		get_lseg(lseg);
+	}
+	return list;
+}
+
+static u32 calc_ds_index_from_commit(struct pnfs_layout_segment *lseg, u32 i)
+{
+	struct nfs4_filelayout_segment *flseg = FILELAYOUT_LSEG(lseg);
+
+	if (flseg->stripe_type == STRIPE_SPARSE)
+		return i;
+	else
+		return nfs4_fl_calc_ds_index(lseg, i);
+}
+
+static struct nfs_fh *
+select_ds_fh_from_commit(struct pnfs_layout_segment *lseg, u32 i)
+{
+	struct nfs4_filelayout_segment *flseg = FILELAYOUT_LSEG(lseg);
+
+	if (flseg->stripe_type == STRIPE_SPARSE) {
+		if (flseg->num_fh == 1)
+			i = 0;
+		else if (flseg->num_fh == 0)
+			/* Use the MDS OPEN fh set in nfs_read_rpcsetup */
+			return NULL;
+	}
+	return flseg->fh_array[i];
+}
+
+static int filelayout_initiate_commit(struct nfs_write_data *data, int how)
+{
+	struct pnfs_layout_segment *lseg = data->lseg;
+	struct nfs4_pnfs_ds *ds;
+	u32 idx;
+	struct nfs_fh *fh;
+
+	idx = calc_ds_index_from_commit(lseg, data->ds_commit_index);
+	ds = nfs4_fl_prepare_ds(lseg, idx);
+	if (!ds) {
+		printk(KERN_ERR "%s: prepare_ds failed, use MDS\n", __func__);
+		set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags);
+		set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags);
+		prepare_to_resend_writes(data);
+		data->mds_ops->rpc_release(data);
+		return -EAGAIN;
+	}
+	dprintk("%s ino %lu, how %d\n", __func__, data->inode->i_ino, how);
+	data->write_done_cb = filelayout_commit_done_cb;
+	data->ds_clp = ds->ds_clp;
+	fh = select_ds_fh_from_commit(lseg, data->ds_commit_index);
+	if (fh)
+		data->args.fh = fh;
+	return nfs_initiate_commit(data, ds->ds_clp->cl_rpcclient,
+				   &filelayout_commit_call_ops, how);
+}
+
+/*
+ * This is only useful while we are using whole file layouts.
+ */
+static struct pnfs_layout_segment *find_only_write_lseg(struct inode *inode)
+{
+	struct pnfs_layout_segment *lseg, *rv = NULL;
+
+	spin_lock(&inode->i_lock);
+	list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list)
+		if (lseg->pls_range.iomode == IOMODE_RW)
+			rv = get_lseg(lseg);
+	spin_unlock(&inode->i_lock);
+	return rv;
+}
+
+static int alloc_ds_commits(struct inode *inode, struct list_head *list)
+{
+	struct pnfs_layout_segment *lseg;
+	struct nfs4_filelayout_segment *fl;
+	struct nfs_write_data *data;
+	int i, j;
+
+	/* Won't need this when non-whole file layout segments are supported
+	 * instead we will use a pnfs_layout_hdr structure */
+	lseg = find_only_write_lseg(inode);
+	if (!lseg)
+		return 0;
+	fl = FILELAYOUT_LSEG(lseg);
+	for (i = 0; i < fl->number_of_buckets; i++) {
+		if (list_empty(&fl->commit_buckets[i]))
+			continue;
+		data = nfs_commitdata_alloc();
+		if (!data)
+			goto out_bad;
+		data->ds_commit_index = i;
+		data->lseg = lseg;
+		list_add(&data->pages, list);
+	}
+	put_lseg(lseg);
+	return 0;
+
+out_bad:
+	for (j = i; j < fl->number_of_buckets; j++) {
+		if (list_empty(&fl->commit_buckets[i]))
+			continue;
+		nfs_retry_commit(&fl->commit_buckets[i], lseg);
+		put_lseg(lseg);  /* associated with emptying bucket */
+	}
+	put_lseg(lseg);
+	/* Caller will clean up entries put on list */
+	return -ENOMEM;
+}
+
+/* This follows nfs_commit_list pretty closely */
+static int
+filelayout_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
+			   int how)
+{
+	struct nfs_write_data	*data, *tmp;
+	LIST_HEAD(list);
+
+	if (!list_empty(mds_pages)) {
+		data = nfs_commitdata_alloc();
+		if (!data)
+			goto out_bad;
+		data->lseg = NULL;
+		list_add(&data->pages, &list);
+	}
+
+	if (alloc_ds_commits(inode, &list))
+		goto out_bad;
+
+	list_for_each_entry_safe(data, tmp, &list, pages) {
+		list_del_init(&data->pages);
+		atomic_inc(&NFS_I(inode)->commits_outstanding);
+		if (!data->lseg) {
+			nfs_init_commit(data, mds_pages, NULL);
+			nfs_initiate_commit(data, NFS_CLIENT(inode),
+					    data->mds_ops, how);
+		} else {
+			nfs_init_commit(data, &FILELAYOUT_LSEG(data->lseg)->commit_buckets[data->ds_commit_index], data->lseg);
+			filelayout_initiate_commit(data, how);
+		}
+	}
+	return 0;
+ out_bad:
+	list_for_each_entry_safe(data, tmp, &list, pages) {
+		nfs_retry_commit(&data->pages, data->lseg);
+		list_del_init(&data->pages);
+		nfs_commit_free(data);
+	}
+	nfs_retry_commit(mds_pages, NULL);
+	nfs_commit_clear_lock(NFS_I(inode));
+	return -ENOMEM;
+}
+
 static struct pnfs_layoutdriver_type filelayout_type = {
 	.id			= LAYOUT_NFSV4_1_FILES,
 	.name			= "LAYOUT_NFSV4_1_FILES",
@@ -559,6 +862,9 @@ static struct pnfs_layoutdriver_type filelayout_type = {
 	.alloc_lseg		= filelayout_alloc_lseg,
 	.free_lseg		= filelayout_free_lseg,
 	.pg_test		= filelayout_pg_test,
+	.mark_pnfs_commit	= filelayout_mark_pnfs_commit,
+	.choose_commit_list	= filelayout_choose_commit_list,
+	.commit_pagelist	= filelayout_commit_pagelist,
 	.read_pagelist		= filelayout_read_pagelist,
 	.write_pagelist		= filelayout_write_pagelist,
 };
diff --git a/fs/nfs/nfs4filelayout.h b/fs/nfs/nfs4filelayout.h
index ee0c907..085a354 100644
--- a/fs/nfs/nfs4filelayout.h
+++ b/fs/nfs/nfs4filelayout.h
@@ -79,6 +79,8 @@ struct nfs4_filelayout_segment {
 	struct nfs4_file_layout_dsaddr *dsaddr; /* Point to GETDEVINFO data */
 	unsigned int num_fh;
 	struct nfs_fh **fh_array;
+	struct list_head *commit_buckets; /* Sort commits to ds */
+	int number_of_buckets;
 };
 
 static inline struct nfs4_filelayout_segment *
diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c
index 68143c1..de5350f 100644
--- a/fs/nfs/nfs4filelayoutdev.c
+++ b/fs/nfs/nfs4filelayoutdev.c
@@ -261,7 +261,7 @@ out:
  * Currently only support ipv4, and one multi-path address.
  */
 static struct nfs4_pnfs_ds *
-decode_and_add_ds(__be32 **pp, struct inode *inode)
+decode_and_add_ds(struct xdr_stream *streamp, struct inode *inode)
 {
 	struct nfs4_pnfs_ds *ds = NULL;
 	char *buf;
@@ -269,25 +269,34 @@ decode_and_add_ds(__be32 **pp, struct inode *inode)
 	u32 ip_addr, port;
 	int nlen, rlen, i;
 	int tmp[2];
-	__be32 *r_netid, *r_addr, *p = *pp;
+	__be32 *p;
 
 	/* r_netid */
+	p = xdr_inline_decode(streamp, 4);
+	if (unlikely(!p))
+		goto out_err;
 	nlen = be32_to_cpup(p++);
-	r_netid = p;
-	p += XDR_QUADLEN(nlen);
 
-	/* r_addr */
-	rlen = be32_to_cpup(p++);
-	r_addr = p;
-	p += XDR_QUADLEN(rlen);
-	*pp = p;
+	p = xdr_inline_decode(streamp, nlen);
+	if (unlikely(!p))
+		goto out_err;
 
 	/* Check that netid is "tcp" */
-	if (nlen != 3 ||  memcmp((char *)r_netid, "tcp", 3)) {
+	if (nlen != 3 ||  memcmp((char *)p, "tcp", 3)) {
 		dprintk("%s: ERROR: non ipv4 TCP r_netid\n", __func__);
 		goto out_err;
 	}
 
+	/* r_addr */
+	p = xdr_inline_decode(streamp, 4);
+	if (unlikely(!p))
+		goto out_err;
+	rlen = be32_to_cpup(p);
+
+	p = xdr_inline_decode(streamp, rlen);
+	if (unlikely(!p))
+		goto out_err;
+
 	/* ipv6 length plus port is legal */
 	if (rlen > INET6_ADDRSTRLEN + 8) {
 		dprintk("%s: Invalid address, length %d\n", __func__,
@@ -300,7 +309,7 @@ decode_and_add_ds(__be32 **pp, struct inode *inode)
 		goto out_err;
 	}
 	buf[rlen] = '\0';
-	memcpy(buf, r_addr, rlen);
+	memcpy(buf, p, rlen);
 
 	/* replace the port dots with dashes for the in4_pton() delimiter*/
 	for (i = 0; i < 2; i++) {
@@ -336,90 +345,154 @@ out_err:
 static struct nfs4_file_layout_dsaddr*
 decode_device(struct inode *ino, struct pnfs_device *pdev)
 {
-	int i, dummy;
+	int i;
 	u32 cnt, num;
 	u8 *indexp;
-	__be32 *p = (__be32 *)pdev->area, *indicesp;
-	struct nfs4_file_layout_dsaddr *dsaddr;
+	__be32 *p;
+	u8 *stripe_indices;
+	u8 max_stripe_index;
+	struct nfs4_file_layout_dsaddr *dsaddr = NULL;
+	struct xdr_stream stream;
+	struct xdr_buf buf = {
+		.pages = pdev->pages,
+		.page_len = pdev->pglen,
+		.buflen = pdev->pglen,
+		.len = pdev->pglen,
+	};
+	struct page *scratch;
+
+	/* set up xdr stream */
+	scratch = alloc_page(GFP_KERNEL);
+	if (!scratch)
+		goto out_err;
+
+	xdr_init_decode(&stream, &buf, NULL);
+	xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE);
 
 	/* Get the stripe count (number of stripe index) */
-	cnt = be32_to_cpup(p++);
+	p = xdr_inline_decode(&stream, 4);
+	if (unlikely(!p))
+		goto out_err_free_scratch;
+
+	cnt = be32_to_cpup(p);
 	dprintk("%s stripe count  %d\n", __func__, cnt);
 	if (cnt > NFS4_PNFS_MAX_STRIPE_CNT) {
 		printk(KERN_WARNING "%s: stripe count %d greater than "
 		       "supported maximum %d\n", __func__,
 			cnt, NFS4_PNFS_MAX_STRIPE_CNT);
-		goto out_err;
+		goto out_err_free_scratch;
+	}
+
+	/* read stripe indices */
+	stripe_indices = kcalloc(cnt, sizeof(u8), GFP_KERNEL);
+	if (!stripe_indices)
+		goto out_err_free_scratch;
+
+	p = xdr_inline_decode(&stream, cnt << 2);
+	if (unlikely(!p))
+		goto out_err_free_stripe_indices;
+
+	indexp = &stripe_indices[0];
+	max_stripe_index = 0;
+	for (i = 0; i < cnt; i++) {
+		*indexp = be32_to_cpup(p++);
+		max_stripe_index = max(max_stripe_index, *indexp);
+		indexp++;
 	}
 
 	/* Check the multipath list count */
-	indicesp = p;
-	p += XDR_QUADLEN(cnt << 2);
-	num = be32_to_cpup(p++);
+	p = xdr_inline_decode(&stream, 4);
+	if (unlikely(!p))
+		goto out_err_free_stripe_indices;
+
+	num = be32_to_cpup(p);
 	dprintk("%s ds_num %u\n", __func__, num);
 	if (num > NFS4_PNFS_MAX_MULTI_CNT) {
 		printk(KERN_WARNING "%s: multipath count %d greater than "
 			"supported maximum %d\n", __func__,
 			num, NFS4_PNFS_MAX_MULTI_CNT);
-		goto out_err;
+		goto out_err_free_stripe_indices;
 	}
+
+	/* validate stripe indices are all < num */
+	if (max_stripe_index >= num) {
+		printk(KERN_WARNING "%s: stripe index %u >= num ds %u\n",
+			__func__, max_stripe_index, num);
+		goto out_err_free_stripe_indices;
+	}
+
 	dsaddr = kzalloc(sizeof(*dsaddr) +
 			(sizeof(struct nfs4_pnfs_ds *) * (num - 1)),
 			GFP_KERNEL);
 	if (!dsaddr)
-		goto out_err;
-
-	dsaddr->stripe_indices = kzalloc(sizeof(u8) * cnt, GFP_KERNEL);
-	if (!dsaddr->stripe_indices)
-		goto out_err_free;
+		goto out_err_free_stripe_indices;
 
 	dsaddr->stripe_count = cnt;
+	dsaddr->stripe_indices = stripe_indices;
+	stripe_indices = NULL;
 	dsaddr->ds_num = num;
 
 	memcpy(&dsaddr->deviceid, &pdev->dev_id, sizeof(pdev->dev_id));
 
-	/* Go back an read stripe indices */
-	p = indicesp;
-	indexp = &dsaddr->stripe_indices[0];
-	for (i = 0; i < dsaddr->stripe_count; i++) {
-		*indexp = be32_to_cpup(p++);
-		if (*indexp >= num)
-			goto out_err_free;
-		indexp++;
-	}
-	/* Skip already read multipath list count */
-	p++;
-
 	for (i = 0; i < dsaddr->ds_num; i++) {
 		int j;
+		u32 mp_count;
+
+		p = xdr_inline_decode(&stream, 4);
+		if (unlikely(!p))
+			goto out_err_free_deviceid;
 
-		dummy = be32_to_cpup(p++); /* multipath count */
-		if (dummy > 1) {
+		mp_count = be32_to_cpup(p); /* multipath count */
+		if (mp_count > 1) {
 			printk(KERN_WARNING
 			       "%s: Multipath count %d not supported, "
 			       "skipping all greater than 1\n", __func__,
-				dummy);
+				mp_count);
 		}
-		for (j = 0; j < dummy; j++) {
+		for (j = 0; j < mp_count; j++) {
 			if (j == 0) {
-				dsaddr->ds_list[i] = decode_and_add_ds(&p, ino);
+				dsaddr->ds_list[i] = decode_and_add_ds(&stream,
+					ino);
 				if (dsaddr->ds_list[i] == NULL)
-					goto out_err_free;
+					goto out_err_free_deviceid;
 			} else {
 				u32 len;
 				/* skip extra multipath */
-				len = be32_to_cpup(p++);
-				p += XDR_QUADLEN(len);
-				len = be32_to_cpup(p++);
-				p += XDR_QUADLEN(len);
-				continue;
+
+				/* read len, skip */
+				p = xdr_inline_decode(&stream, 4);
+				if (unlikely(!p))
+					goto out_err_free_deviceid;
+				len = be32_to_cpup(p);
+
+				p = xdr_inline_decode(&stream, len);
+				if (unlikely(!p))
+					goto out_err_free_deviceid;
+
+				/* read len, skip */
+				p = xdr_inline_decode(&stream, 4);
+				if (unlikely(!p))
+					goto out_err_free_deviceid;
+				len = be32_to_cpup(p);
+
+				p = xdr_inline_decode(&stream, len);
+				if (unlikely(!p))
+					goto out_err_free_deviceid;
 			}
 		}
 	}
+
+	__free_page(scratch);
 	return dsaddr;
 
-out_err_free:
+out_err_free_deviceid:
 	nfs4_fl_free_deviceid(dsaddr);
+	/* stripe_indicies was part of dsaddr */
+	goto out_err_free_scratch;
+out_err_free_stripe_indices:
+	kfree(stripe_indices);
+out_err_free_scratch:
+	__free_page(scratch);
 out_err:
 	dprintk("%s ERROR: returning NULL\n", __func__);
 	return NULL;
@@ -498,11 +571,6 @@ get_device_info(struct inode *inode, struct nfs4_deviceid *dev_id)
 			goto out_free;
 	}
 
-	/* set pdev->area */
-	pdev->area = vmap(pages, max_pages, VM_MAP, PAGE_KERNEL);
-	if (!pdev->area)
-		goto out_free;
-
 	memcpy(&pdev->dev_id, dev_id, sizeof(*dev_id));
 	pdev->layout_type = LAYOUT_NFSV4_1_FILES;
 	pdev->pages = pages;
@@ -521,8 +589,6 @@ get_device_info(struct inode *inode, struct nfs4_deviceid *dev_id)
 	 */
 	dsaddr = decode_and_add_device(inode, pdev);
 out_free:
-	if (pdev->area != NULL)
-		vunmap(pdev->area);
 	for (i = 0; i < max_pages; i++)
 		__free_page(pages[i]);
 	kfree(pages);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 1d84e70..dfd1e6d 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -41,6 +41,7 @@
 #include <linux/string.h>
 #include <linux/slab.h>
 #include <linux/sunrpc/clnt.h>
+#include <linux/sunrpc/gss_api.h>
 #include <linux/nfs.h>
 #include <linux/nfs4.h>
 #include <linux/nfs_fs.h>
@@ -71,7 +72,9 @@ static int _nfs4_proc_open(struct nfs4_opendata *data);
 static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
 static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
 static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
-static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
+static int _nfs4_proc_lookup(struct rpc_clnt *client, struct inode *dir,
+			     const struct qstr *name, struct nfs_fh *fhandle,
+			     struct nfs_fattr *fattr);
 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
 			    struct nfs_fattr *fattr, struct iattr *sattr,
@@ -85,6 +88,8 @@ static int nfs4_map_errors(int err)
 	switch (err) {
 	case -NFS4ERR_RESOURCE:
 		return -EREMOTEIO;
+	case -NFS4ERR_WRONGSEC:
+		return -EPERM;
 	case -NFS4ERR_BADOWNER:
 	case -NFS4ERR_BADNAME:
 		return -EINVAL;
@@ -657,7 +662,8 @@ struct rpc_call_ops nfs41_call_priv_sync_ops = {
 	.rpc_call_done = nfs41_call_sync_done,
 };
 
-static int nfs4_call_sync_sequence(struct nfs_server *server,
+static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
+				   struct nfs_server *server,
 				   struct rpc_message *msg,
 				   struct nfs4_sequence_args *args,
 				   struct nfs4_sequence_res *res,
@@ -673,7 +679,7 @@ static int nfs4_call_sync_sequence(struct nfs_server *server,
 		.cache_reply = cache_reply,
 	};
 	struct rpc_task_setup task_setup = {
-		.rpc_client = server->client,
+		.rpc_client = clnt,
 		.rpc_message = msg,
 		.callback_ops = &nfs41_call_sync_ops,
 		.callback_data = &data
@@ -692,13 +698,14 @@ static int nfs4_call_sync_sequence(struct nfs_server *server,
 	return ret;
 }
 
-int _nfs4_call_sync_session(struct nfs_server *server,
+int _nfs4_call_sync_session(struct rpc_clnt *clnt,
+			    struct nfs_server *server,
 			    struct rpc_message *msg,
 			    struct nfs4_sequence_args *args,
 			    struct nfs4_sequence_res *res,
 			    int cache_reply)
 {
-	return nfs4_call_sync_sequence(server, msg, args, res, cache_reply, 0);
+	return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0);
 }
 
 #else
@@ -709,19 +716,28 @@ static int nfs4_sequence_done(struct rpc_task *task,
 }
 #endif /* CONFIG_NFS_V4_1 */
 
-int _nfs4_call_sync(struct nfs_server *server,
+int _nfs4_call_sync(struct rpc_clnt *clnt,
+		    struct nfs_server *server,
 		    struct rpc_message *msg,
 		    struct nfs4_sequence_args *args,
 		    struct nfs4_sequence_res *res,
 		    int cache_reply)
 {
 	args->sa_session = res->sr_session = NULL;
-	return rpc_call_sync(server->client, msg, 0);
+	return rpc_call_sync(clnt, msg, 0);
 }
 
-#define nfs4_call_sync(server, msg, args, res, cache_reply) \
-	(server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \
-			&(res)->seq_res, (cache_reply))
+static inline
+int nfs4_call_sync(struct rpc_clnt *clnt,
+		   struct nfs_server *server,
+		   struct rpc_message *msg,
+		   struct nfs4_sequence_args *args,
+		   struct nfs4_sequence_res *res,
+		   int cache_reply)
+{
+	return server->nfs_client->cl_mvops->call_sync(clnt, server, msg,
+						args, res, cache_reply);
+}
 
 static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
 {
@@ -1831,7 +1847,7 @@ static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
 	} else
 		memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid));
 
-	status = nfs4_call_sync(server, &msg, &arg, &res, 1);
+	status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
 	if (status == 0 && state != NULL)
 		renew_lease(server, timestamp);
 	return status;
@@ -2090,7 +2106,7 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f
 	};
 	int status;
 
-	status = nfs4_call_sync(server, &msg, &args, &res, 0);
+	status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
 	if (status == 0) {
 		memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
 		server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
@@ -2160,7 +2176,7 @@ static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
 	};
 
 	nfs_fattr_init(info->fattr);
-	return nfs4_call_sync(server, &msg, &args, &res, 0);
+	return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
 }
 
 static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
@@ -2176,15 +2192,43 @@ static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
 	return err;
 }
 
+static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
+				struct nfs_fsinfo *info, rpc_authflavor_t flavor)
+{
+	struct rpc_auth *auth;
+	int ret;
+
+	auth = rpcauth_create(flavor, server->client);
+	if (!auth) {
+		ret = -EIO;
+		goto out;
+	}
+	ret = nfs4_lookup_root(server, fhandle, info);
+	if (ret < 0)
+		ret = -EAGAIN;
+out:
+	return ret;
+}
+
 /*
  * get the file handle for the "/" directory on the server
  */
 static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
 			      struct nfs_fsinfo *info)
 {
-	int status;
+	int i, len, status = 0;
+	rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS + 2];
+
+	flav_array[0] = RPC_AUTH_UNIX;
+	len = gss_mech_list_pseudoflavors(&flav_array[1]);
+	flav_array[1+len] = RPC_AUTH_NULL;
+	len += 2;
 
-	status = nfs4_lookup_root(server, fhandle, info);
+	for (i = 0; i < len; i++) {
+		status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]);
+		if (status == 0)
+			break;
+	}
 	if (status == 0)
 		status = nfs4_server_capabilities(server, fhandle);
 	if (status == 0)
@@ -2249,7 +2293,7 @@ static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
 	};
 	
 	nfs_fattr_init(fattr);
-	return nfs4_call_sync(server, &msg, &args, &res, 0);
+	return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
 }
 
 static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
@@ -2309,9 +2353,9 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 	return status;
 }
 
-static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh,
-		const struct qstr *name, struct nfs_fh *fhandle,
-		struct nfs_fattr *fattr)
+static int _nfs4_proc_lookupfh(struct rpc_clnt *clnt, struct nfs_server *server,
+		const struct nfs_fh *dirfh, const struct qstr *name,
+		struct nfs_fh *fhandle, struct nfs_fattr *fattr)
 {
 	int		       status;
 	struct nfs4_lookup_arg args = {
@@ -2333,7 +2377,7 @@ static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *d
 	nfs_fattr_init(fattr);
 
 	dprintk("NFS call  lookupfh %s\n", name->name);
-	status = nfs4_call_sync(server, &msg, &args, &res, 0);
+	status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0);
 	dprintk("NFS reply lookupfh: %d\n", status);
 	return status;
 }
@@ -2345,7 +2389,7 @@ static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh,
 	struct nfs4_exception exception = { };
 	int err;
 	do {
-		err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr);
+		err = _nfs4_proc_lookupfh(server->client, server, dirfh, name, fhandle, fattr);
 		/* FIXME: !!!! */
 		if (err == -NFS4ERR_MOVED) {
 			err = -EREMOTE;
@@ -2356,27 +2400,41 @@ static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh,
 	return err;
 }
 
-static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name,
-		struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
+		const struct qstr *name, struct nfs_fh *fhandle,
+		struct nfs_fattr *fattr)
 {
 	int status;
 	
 	dprintk("NFS call  lookup %s\n", name->name);
-	status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr);
+	status = _nfs4_proc_lookupfh(clnt, NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr);
 	if (status == -NFS4ERR_MOVED)
 		status = nfs4_get_referral(dir, name, fattr, fhandle);
 	dprintk("NFS reply lookup: %d\n", status);
 	return status;
 }
 
-static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh)
+{
+	memset(fh, 0, sizeof(struct nfs_fh));
+	fattr->fsid.major = 1;
+	fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
+		NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT;
+	fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
+	fattr->nlink = 2;
+}
+
+static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name,
+			    struct nfs_fh *fhandle, struct nfs_fattr *fattr)
 {
 	struct nfs4_exception exception = { };
 	int err;
 	do {
 		err = nfs4_handle_exception(NFS_SERVER(dir),
-				_nfs4_proc_lookup(dir, name, fhandle, fattr),
+				_nfs4_proc_lookup(clnt, dir, name, fhandle, fattr),
 				&exception);
+		if (err == -EPERM)
+			nfs_fixup_secinfo_attributes(fattr, fhandle);
 	} while (exception.retry);
 	return err;
 }
@@ -2421,7 +2479,7 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry
 	if (res.fattr == NULL)
 		return -ENOMEM;
 
-	status = nfs4_call_sync(server, &msg, &args, &res, 0);
+	status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
 	if (!status) {
 		entry->mask = 0;
 		if (res.access & NFS4_ACCESS_READ)
@@ -2488,7 +2546,7 @@ static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
 		.rpc_resp = &res,
 	};
 
-	return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0);
+	return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
 }
 
 static int nfs4_proc_readlink(struct inode *inode, struct page *page,
@@ -2577,7 +2635,7 @@ static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
 	if (res.dir_attr == NULL)
 		goto out;
 
-	status = nfs4_call_sync(server, &msg, &args, &res, 1);
+	status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
 	if (status == 0) {
 		update_changeattr(dir, &res.cinfo);
 		nfs_post_op_update_inode(dir, res.dir_attr);
@@ -2678,7 +2736,7 @@ static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
 	if (res.old_fattr == NULL || res.new_fattr == NULL)
 		goto out;
 
-	status = nfs4_call_sync(server, &msg, &arg, &res, 1);
+	status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
 	if (!status) {
 		update_changeattr(old_dir, &res.old_cinfo);
 		nfs_post_op_update_inode(old_dir, res.old_fattr);
@@ -2729,7 +2787,7 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *
 	if (res.fattr == NULL || res.dir_attr == NULL)
 		goto out;
 
-	status = nfs4_call_sync(server, &msg, &arg, &res, 1);
+	status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
 	if (!status) {
 		update_changeattr(dir, &res.cinfo);
 		nfs_post_op_update_inode(dir, res.dir_attr);
@@ -2792,8 +2850,8 @@ static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
 
 static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
 {
-	int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg,
-				    &data->arg, &data->res, 1);
+	int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
+				    &data->arg.seq_args, &data->res.seq_res, 1);
 	if (status == 0) {
 		update_changeattr(dir, &data->res.dir_cinfo);
 		nfs_post_op_update_inode(dir, data->res.dir_fattr);
@@ -2905,7 +2963,7 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
 			(unsigned long long)cookie);
 	nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args);
 	res.pgbase = args.pgbase;
-	status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0);
+	status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
 	if (status >= 0) {
 		memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE);
 		status += args.pgbase;
@@ -2997,7 +3055,7 @@ static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
 	};
 
 	nfs_fattr_init(fsstat->fattr);
-	return  nfs4_call_sync(server, &msg, &args, &res, 0);
+	return  nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
 }
 
 static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
@@ -3028,7 +3086,7 @@ static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
 		.rpc_resp = &res,
 	};
 
-	return nfs4_call_sync(server, &msg, &args, &res, 0);
+	return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
 }
 
 static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
@@ -3073,7 +3131,7 @@ static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle
 	}
 
 	nfs_fattr_init(pathconf->fattr);
-	return nfs4_call_sync(server, &msg, &args, &res, 0);
+	return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
 }
 
 static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
@@ -3195,12 +3253,9 @@ static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_messag
 	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
 }
 
-static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
+static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data)
 {
 	struct inode *inode = data->inode;
-	
-	if (!nfs4_sequence_done(task, &data->res.seq_res))
-		return -EAGAIN;
 
 	if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
 		nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
@@ -3210,11 +3265,24 @@ static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
 	return 0;
 }
 
+static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
+{
+	if (!nfs4_sequence_done(task, &data->res.seq_res))
+		return -EAGAIN;
+	return data->write_done_cb(task, data);
+}
+
 static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
 {
 	struct nfs_server *server = NFS_SERVER(data->inode);
-	
-	data->args.bitmask = server->cache_consistency_bitmask;
+
+	if (data->lseg) {
+		data->args.bitmask = NULL;
+		data->res.fattr = NULL;
+	} else
+		data->args.bitmask = server->cache_consistency_bitmask;
+	if (!data->write_done_cb)
+		data->write_done_cb = nfs4_commit_done_cb;
 	data->res.server = server;
 	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
 }
@@ -3452,7 +3520,7 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu
 		resp_buf = buf;
 		buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase);
 	}
-	ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0);
+	ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
 	if (ret)
 		goto out_free;
 	if (res.acl_len > args.acl_len)
@@ -3527,7 +3595,7 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl
 	if (i < 0)
 		return i;
 	nfs_inode_return_delegation(inode);
-	ret = nfs4_call_sync(server, &msg, &arg, &res, 1);
+	ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
 
 	/*
 	 * Free each page after tx, so the only ref left is
@@ -3890,7 +3958,7 @@ static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock
 	lsp = request->fl_u.nfs4_fl.owner;
 	arg.lock_owner.id = lsp->ls_id.id;
 	arg.lock_owner.s_dev = server->s_dev;
-	status = nfs4_call_sync(server, &msg, &arg, &res, 1);
+	status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
 	switch (status) {
 		case 0:
 			request->fl_type = F_UNLCK;
@@ -4618,12 +4686,46 @@ int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
 	nfs_fattr_init(&fs_locations->fattr);
 	fs_locations->server = server;
 	fs_locations->nlocations = 0;
-	status = nfs4_call_sync(server, &msg, &args, &res, 0);
+	status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
 	nfs_fixup_referral_attributes(&fs_locations->fattr);
 	dprintk("%s: returned status = %d\n", __func__, status);
 	return status;
 }
 
+static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors)
+{
+	int status;
+	struct nfs4_secinfo_arg args = {
+		.dir_fh = NFS_FH(dir),
+		.name   = name,
+	};
+	struct nfs4_secinfo_res res = {
+		.flavors     = flavors,
+	};
+	struct rpc_message msg = {
+		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO],
+		.rpc_argp = &args,
+		.rpc_resp = &res,
+	};
+
+	dprintk("NFS call  secinfo %s\n", name->name);
+	status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
+	dprintk("NFS reply  secinfo: %d\n", status);
+	return status;
+}
+
+int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors)
+{
+	struct nfs4_exception exception = { };
+	int err;
+	do {
+		err = nfs4_handle_exception(NFS_SERVER(dir),
+				_nfs4_proc_secinfo(dir, name, flavors),
+				&exception);
+	} while (exception.retry);
+	return err;
+}
+
 #ifdef CONFIG_NFS_V4_1
 /*
  * Check the exchange flags returned by the server for invalid flags, having
@@ -5516,8 +5618,6 @@ static void nfs4_layoutget_release(void *calldata)
 	struct nfs4_layoutget *lgp = calldata;
 
 	dprintk("--> %s\n", __func__);
-	if (lgp->res.layout.buf != NULL)
-		free_page((unsigned long) lgp->res.layout.buf);
 	put_nfs_open_context(lgp->args.ctx);
 	kfree(calldata);
 	dprintk("<-- %s\n", __func__);
@@ -5549,12 +5649,7 @@ int nfs4_proc_layoutget(struct nfs4_layoutget *lgp)
 
 	dprintk("--> %s\n", __func__);
 
-	lgp->res.layout.buf = (void *)__get_free_page(GFP_NOFS);
-	if (lgp->res.layout.buf == NULL) {
-		nfs4_layoutget_release(lgp);
-		return -ENOMEM;
-	}
-
+	lgp->res.layoutp = &lgp->args.layout;
 	lgp->res.seq_res.sr_slot = NULL;
 	task = rpc_run_task(&task_setup_data);
 	if (IS_ERR(task))
@@ -5586,7 +5681,7 @@ _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
 	int status;
 
 	dprintk("--> %s\n", __func__);
-	status = nfs4_call_sync(server, &msg, &args, &res, 0);
+	status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
 	dprintk("<-- %s status=%d\n", __func__, status);
 
 	return status;
@@ -5606,6 +5701,100 @@ int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
 }
 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
 
+static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata)
+{
+	struct nfs4_layoutcommit_data *data = calldata;
+	struct nfs_server *server = NFS_SERVER(data->args.inode);
+
+	if (nfs4_setup_sequence(server, &data->args.seq_args,
+				&data->res.seq_res, 1, task))
+		return;
+	rpc_call_start(task);
+}
+
+static void
+nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
+{
+	struct nfs4_layoutcommit_data *data = calldata;
+	struct nfs_server *server = NFS_SERVER(data->args.inode);
+
+	if (!nfs4_sequence_done(task, &data->res.seq_res))
+		return;
+
+	switch (task->tk_status) { /* Just ignore these failures */
+	case NFS4ERR_DELEG_REVOKED: /* layout was recalled */
+	case NFS4ERR_BADIOMODE:     /* no IOMODE_RW layout for range */
+	case NFS4ERR_BADLAYOUT:     /* no layout */
+	case NFS4ERR_GRACE:	    /* loca_recalim always false */
+		task->tk_status = 0;
+	}
+
+	if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
+		nfs_restart_rpc(task, server->nfs_client);
+		return;
+	}
+
+	if (task->tk_status == 0)
+		nfs_post_op_update_inode_force_wcc(data->args.inode,
+						   data->res.fattr);
+}
+
+static void nfs4_layoutcommit_release(void *calldata)
+{
+	struct nfs4_layoutcommit_data *data = calldata;
+
+	/* Matched by references in pnfs_set_layoutcommit */
+	put_lseg(data->lseg);
+	put_rpccred(data->cred);
+	kfree(data);
+}
+
+static const struct rpc_call_ops nfs4_layoutcommit_ops = {
+	.rpc_call_prepare = nfs4_layoutcommit_prepare,
+	.rpc_call_done = nfs4_layoutcommit_done,
+	.rpc_release = nfs4_layoutcommit_release,
+};
+
+int
+nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
+{
+	struct rpc_message msg = {
+		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT],
+		.rpc_argp = &data->args,
+		.rpc_resp = &data->res,
+		.rpc_cred = data->cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.task = &data->task,
+		.rpc_client = NFS_CLIENT(data->args.inode),
+		.rpc_message = &msg,
+		.callback_ops = &nfs4_layoutcommit_ops,
+		.callback_data = data,
+		.flags = RPC_TASK_ASYNC,
+	};
+	struct rpc_task *task;
+	int status = 0;
+
+	dprintk("NFS: %4d initiating layoutcommit call. sync %d "
+		"lbw: %llu inode %lu\n",
+		data->task.tk_pid, sync,
+		data->args.lastbytewritten,
+		data->args.inode->i_ino);
+
+	task = rpc_run_task(&task_setup_data);
+	if (IS_ERR(task))
+		return PTR_ERR(task);
+	if (sync == false)
+		goto out;
+	status = nfs4_wait_for_completion_rpc_task(task);
+	if (status != 0)
+		goto out;
+	status = task->tk_status;
+out:
+	dprintk("%s: status %d\n", __func__, status);
+	rpc_put_task(task);
+	return status;
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
@@ -5741,6 +5930,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
 	.close_context  = nfs4_close_context,
 	.open_context	= nfs4_atomic_open,
 	.init_client	= nfs4_init_client,
+	.secinfo	= nfs4_proc_secinfo,
 };
 
 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index ab1bf5b..a6804f7 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -590,7 +590,8 @@ nfs4_get_open_state(struct inode *inode, struct nfs4_state_owner *owner)
 		state->owner = owner;
 		atomic_inc(&owner->so_count);
 		list_add(&state->inode_states, &nfsi->open_states);
-		state->inode = igrab(inode);
+		ihold(inode);
+		state->inode = inode;
 		spin_unlock(&inode->i_lock);
 		/* Note: The reclaim code dictates that we add stateless
 		 * and read-only stateids to the end of the list */
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 0cf560f..dddfb57 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -46,6 +46,7 @@
 #include <linux/kdev_t.h>
 #include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/msg_prot.h>
+#include <linux/sunrpc/gss_api.h>
 #include <linux/nfs.h>
 #include <linux/nfs4.h>
 #include <linux/nfs_fs.h>
@@ -112,7 +113,7 @@ static int nfs4_stat_to_errno(int);
 #define encode_restorefh_maxsz  (op_encode_hdr_maxsz)
 #define decode_restorefh_maxsz  (op_decode_hdr_maxsz)
 #define encode_fsinfo_maxsz	(encode_getattr_maxsz)
-#define decode_fsinfo_maxsz	(op_decode_hdr_maxsz + 11)
+#define decode_fsinfo_maxsz	(op_decode_hdr_maxsz + 15)
 #define encode_renew_maxsz	(op_encode_hdr_maxsz + 3)
 #define decode_renew_maxsz	(op_decode_hdr_maxsz)
 #define encode_setclientid_maxsz \
@@ -253,6 +254,8 @@ static int nfs4_stat_to_errno(int);
 				(encode_getattr_maxsz)
 #define decode_fs_locations_maxsz \
 				(0)
+#define encode_secinfo_maxsz	(op_encode_hdr_maxsz + nfs4_name_maxsz)
+#define decode_secinfo_maxsz	(op_decode_hdr_maxsz + 4 + (NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)))
 
 #if defined(CONFIG_NFS_V4_1)
 #define NFS4_MAX_MACHINE_NAME_LEN (64)
@@ -324,6 +327,18 @@ static int nfs4_stat_to_errno(int);
 #define decode_layoutget_maxsz	(op_decode_hdr_maxsz + 8 + \
 				decode_stateid_maxsz + \
 				XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
+#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz +          \
+				2 /* offset */ + \
+				2 /* length */ + \
+				1 /* reclaim */ + \
+				encode_stateid_maxsz + \
+				1 /* new offset (true) */ + \
+				2 /* last byte written */ + \
+				1 /* nt_timechanged (false) */ + \
+				1 /* layoutupdate4 layout type */ + \
+				1 /* NULL filelayout layoutupdate4 payload */)
+#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
+
 #else /* CONFIG_NFS_V4_1 */
 #define encode_sequence_maxsz	0
 #define decode_sequence_maxsz	0
@@ -676,6 +691,14 @@ static int nfs4_stat_to_errno(int);
 				 decode_putfh_maxsz + \
 				 decode_lookup_maxsz + \
 				 decode_fs_locations_maxsz)
+#define NFS4_enc_secinfo_sz 	(compound_encode_hdr_maxsz + \
+				encode_sequence_maxsz + \
+				encode_putfh_maxsz + \
+				encode_secinfo_maxsz)
+#define NFS4_dec_secinfo_sz	(compound_decode_hdr_maxsz + \
+				decode_sequence_maxsz + \
+				decode_putfh_maxsz + \
+				decode_secinfo_maxsz)
 #if defined(CONFIG_NFS_V4_1)
 #define NFS4_enc_exchange_id_sz \
 				(compound_encode_hdr_maxsz + \
@@ -727,6 +750,17 @@ static int nfs4_stat_to_errno(int);
 				decode_sequence_maxsz + \
 				decode_putfh_maxsz +        \
 				decode_layoutget_maxsz)
+#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
+				encode_sequence_maxsz +\
+				encode_putfh_maxsz + \
+				encode_layoutcommit_maxsz + \
+				encode_getattr_maxsz)
+#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
+				decode_sequence_maxsz + \
+				decode_putfh_maxsz + \
+				decode_layoutcommit_maxsz + \
+				decode_getattr_maxsz)
+
 
 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
 				      compound_encode_hdr_maxsz +
@@ -1620,6 +1654,18 @@ static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *state
 	hdr->replen += decode_delegreturn_maxsz;
 }
 
+static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
+{
+	int len = name->len;
+	__be32 *p;
+
+	p = reserve_space(xdr, 8 + len);
+	*p++ = cpu_to_be32(OP_SECINFO);
+	xdr_encode_opaque(p, name->name, len);
+	hdr->nops++;
+	hdr->replen += decode_secinfo_maxsz;
+}
+
 #if defined(CONFIG_NFS_V4_1)
 /* NFSv4.1 operations */
 static void encode_exchange_id(struct xdr_stream *xdr,
@@ -1816,6 +1862,34 @@ encode_layoutget(struct xdr_stream *xdr,
 	hdr->nops++;
 	hdr->replen += decode_layoutget_maxsz;
 }
+
+static int
+encode_layoutcommit(struct xdr_stream *xdr,
+		    const struct nfs4_layoutcommit_args *args,
+		    struct compound_hdr *hdr)
+{
+	__be32 *p;
+
+	dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
+		NFS_SERVER(args->inode)->pnfs_curr_ld->id);
+
+	p = reserve_space(xdr, 48 + NFS4_STATEID_SIZE);
+	*p++ = cpu_to_be32(OP_LAYOUTCOMMIT);
+	/* Only whole file layouts */
+	p = xdr_encode_hyper(p, 0); /* offset */
+	p = xdr_encode_hyper(p, NFS4_MAX_UINT64); /* length */
+	*p++ = cpu_to_be32(0); /* reclaim */
+	p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE);
+	*p++ = cpu_to_be32(1); /* newoffset = TRUE */
+	p = xdr_encode_hyper(p, args->lastbytewritten);
+	*p++ = cpu_to_be32(0); /* Never send time_modify_changed */
+	*p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
+	*p++ = cpu_to_be32(0); /* no file layout payload */
+
+	hdr->nops++;
+	hdr->replen += decode_layoutcommit_maxsz;
+	return 0;
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 /*
@@ -2294,7 +2368,8 @@ static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
 	encode_sequence(xdr, &args->seq_args, &hdr);
 	encode_putfh(xdr, args->fh, &hdr);
 	encode_commit(xdr, args, &hdr);
-	encode_getfattr(xdr, args->bitmask, &hdr);
+	if (args->bitmask)
+		encode_getfattr(xdr, args->bitmask, &hdr);
 	encode_nops(&hdr);
 }
 
@@ -2465,6 +2540,24 @@ static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
 	encode_nops(&hdr);
 }
 
+/*
+ * Encode SECINFO request
+ */
+static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
+				struct xdr_stream *xdr,
+				struct nfs4_secinfo_arg *args)
+{
+	struct compound_hdr hdr = {
+		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
+	};
+
+	encode_compound_hdr(xdr, req, &hdr);
+	encode_sequence(xdr, &args->seq_args, &hdr);
+	encode_putfh(xdr, args->dir_fh, &hdr);
+	encode_secinfo(xdr, args->name, &hdr);
+	encode_nops(&hdr);
+}
+
 #if defined(CONFIG_NFS_V4_1)
 /*
  * EXCHANGE_ID request
@@ -2604,8 +2697,32 @@ static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
 	encode_sequence(xdr, &args->seq_args, &hdr);
 	encode_putfh(xdr, NFS_FH(args->inode), &hdr);
 	encode_layoutget(xdr, args, &hdr);
+
+	xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
+	    args->layout.pages, 0, args->layout.pglen);
+
 	encode_nops(&hdr);
 }
+
+/*
+ *  Encode LAYOUTCOMMIT request
+ */
+static int nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
+				     struct xdr_stream *xdr,
+				     struct nfs4_layoutcommit_args *args)
+{
+	struct compound_hdr hdr = {
+		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
+	};
+
+	encode_compound_hdr(xdr, req, &hdr);
+	encode_sequence(xdr, &args->seq_args, &hdr);
+	encode_putfh(xdr, NFS_FH(args->inode), &hdr);
+	encode_layoutcommit(xdr, args, &hdr);
+	encode_getfattr(xdr, args->bitmask, &hdr);
+	encode_nops(&hdr);
+	return 0;
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
@@ -2925,6 +3042,7 @@ static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap)
 		if (unlikely(!p))
 			goto out_overflow;
 		bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
+		return -be32_to_cpup(p);
 	}
 	return 0;
 out_overflow:
@@ -3912,6 +4030,10 @@ static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
 	fattr->valid |= status;
 
 	status = decode_attr_error(xdr, bitmap);
+	if (status == -NFS4ERR_WRONGSEC) {
+		nfs_fixup_secinfo_attributes(fattr, fh);
+		status = 0;
+	}
 	if (status < 0)
 		goto xdr_error;
 
@@ -4680,6 +4802,73 @@ static int decode_delegreturn(struct xdr_stream *xdr)
 	return decode_op_hdr(xdr, OP_DELEGRETURN);
 }
 
+static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
+{
+	__be32 *p;
+
+	p = xdr_inline_decode(xdr, 4);
+	if (unlikely(!p))
+		goto out_overflow;
+	flavor->gss.sec_oid4.len = be32_to_cpup(p);
+	if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
+		goto out_err;
+
+	p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
+	if (unlikely(!p))
+		goto out_overflow;
+	memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
+
+	p = xdr_inline_decode(xdr, 8);
+	if (unlikely(!p))
+		goto out_overflow;
+	flavor->gss.qop4 = be32_to_cpup(p++);
+	flavor->gss.service = be32_to_cpup(p);
+
+	return 0;
+
+out_overflow:
+	print_overflow_msg(__func__, xdr);
+	return -EIO;
+out_err:
+	return -EINVAL;
+}
+
+static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
+{
+	struct nfs4_secinfo_flavor *sec_flavor;
+	int status;
+	__be32 *p;
+	int i;
+
+	status = decode_op_hdr(xdr, OP_SECINFO);
+	p = xdr_inline_decode(xdr, 4);
+	if (unlikely(!p))
+		goto out_overflow;
+	res->flavors->num_flavors = be32_to_cpup(p);
+
+	for (i = 0; i < res->flavors->num_flavors; i++) {
+		sec_flavor = &res->flavors->flavors[i];
+		if ((char *)&sec_flavor[1] - (char *)res > PAGE_SIZE)
+			break;
+
+		p = xdr_inline_decode(xdr, 4);
+		if (unlikely(!p))
+			goto out_overflow;
+		sec_flavor->flavor = be32_to_cpup(p);
+
+		if (sec_flavor->flavor == RPC_AUTH_GSS) {
+			if (decode_secinfo_gss(xdr, sec_flavor))
+				break;
+		}
+	}
+
+	return 0;
+
+out_overflow:
+	print_overflow_msg(__func__, xdr);
+	return -EIO;
+}
+
 #if defined(CONFIG_NFS_V4_1)
 static int decode_exchange_id(struct xdr_stream *xdr,
 			      struct nfs41_exchange_id_res *res)
@@ -4950,6 +5139,9 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
 	__be32 *p;
 	int status;
 	u32 layout_count;
+	struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
+	struct kvec *iov = rcvbuf->head;
+	u32 hdrlen, recvd;
 
 	status = decode_op_hdr(xdr, OP_LAYOUTGET);
 	if (status)
@@ -4966,17 +5158,14 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
 		return -EINVAL;
 	}
 
-	p = xdr_inline_decode(xdr, 24);
+	p = xdr_inline_decode(xdr, 28);
 	if (unlikely(!p))
 		goto out_overflow;
 	p = xdr_decode_hyper(p, &res->range.offset);
 	p = xdr_decode_hyper(p, &res->range.length);
 	res->range.iomode = be32_to_cpup(p++);
 	res->type = be32_to_cpup(p++);
-
-	status = decode_opaque_inline(xdr, &res->layout.len, (char **)&p);
-	if (unlikely(status))
-		return status;
+	res->layoutp->len = be32_to_cpup(p);
 
 	dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
 		__func__,
@@ -4984,12 +5173,18 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
 		(unsigned long)res->range.length,
 		res->range.iomode,
 		res->type,
-		res->layout.len);
+		res->layoutp->len);
 
-	/* nfs4_proc_layoutget allocated a single page */
-	if (res->layout.len > PAGE_SIZE)
-		return -ENOMEM;
-	memcpy(res->layout.buf, p, res->layout.len);
+	hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
+	recvd = req->rq_rcv_buf.len - hdrlen;
+	if (res->layoutp->len > recvd) {
+		dprintk("NFS: server cheating in layoutget reply: "
+				"layout len %u > recvd %u\n",
+				res->layoutp->len, recvd);
+		return -EINVAL;
+	}
+
+	xdr_read_pages(xdr, res->layoutp->len);
 
 	if (layout_count > 1) {
 		/* We only handle a length one array at the moment.  Any
@@ -5006,6 +5201,35 @@ out_overflow:
 	print_overflow_msg(__func__, xdr);
 	return -EIO;
 }
+
+static int decode_layoutcommit(struct xdr_stream *xdr,
+			       struct rpc_rqst *req,
+			       struct nfs4_layoutcommit_res *res)
+{
+	__be32 *p;
+	__u32 sizechanged;
+	int status;
+
+	status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
+	if (status)
+		return status;
+
+	p = xdr_inline_decode(xdr, 4);
+	if (unlikely(!p))
+		goto out_overflow;
+	sizechanged = be32_to_cpup(p);
+
+	if (sizechanged) {
+		/* throw away new size */
+		p = xdr_inline_decode(xdr, 8);
+		if (unlikely(!p))
+			goto out_overflow;
+	}
+	return 0;
+out_overflow:
+	print_overflow_msg(__func__, xdr);
+	return -EIO;
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 /*
@@ -5723,8 +5947,9 @@ static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
 	status = decode_commit(xdr, res);
 	if (status)
 		goto out;
-	decode_getfattr(xdr, res->fattr, res->server,
-			!RPC_IS_ASYNC(rqstp->rq_task));
+	if (res->fattr)
+		decode_getfattr(xdr, res->fattr, res->server,
+				!RPC_IS_ASYNC(rqstp->rq_task));
 out:
 	return status;
 }
@@ -5919,6 +6144,32 @@ out:
 	return status;
 }
 
+/*
+ * Decode SECINFO response
+ */
+static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
+				struct xdr_stream *xdr,
+				struct nfs4_secinfo_res *res)
+{
+	struct compound_hdr hdr;
+	int status;
+
+	status = decode_compound_hdr(xdr, &hdr);
+	if (status)
+		goto out;
+	status = decode_sequence(xdr, &res->seq_res, rqstp);
+	if (status)
+		goto out;
+	status = decode_putfh(xdr);
+	if (status)
+		goto out;
+	status = decode_secinfo(xdr, res);
+	if (status)
+		goto out;
+out:
+	return status;
+}
+
 #if defined(CONFIG_NFS_V4_1)
 /*
  * Decode EXCHANGE_ID response
@@ -6066,6 +6317,34 @@ static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
 out:
 	return status;
 }
+
+/*
+ * Decode LAYOUTCOMMIT response
+ */
+static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
+				     struct xdr_stream *xdr,
+				     struct nfs4_layoutcommit_res *res)
+{
+	struct compound_hdr hdr;
+	int status;
+
+	status = decode_compound_hdr(xdr, &hdr);
+	if (status)
+		goto out;
+	status = decode_sequence(xdr, &res->seq_res, rqstp);
+	if (status)
+		goto out;
+	status = decode_putfh(xdr);
+	if (status)
+		goto out;
+	status = decode_layoutcommit(xdr, rqstp, res);
+	if (status)
+		goto out;
+	decode_getfattr(xdr, res->fattr, res->server,
+			!RPC_IS_ASYNC(rqstp->rq_task));
+out:
+	return status;
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 /**
@@ -6180,10 +6459,6 @@ static struct {
 	{ NFS4ERR_SYMLINK,	-ELOOP		},
 	{ NFS4ERR_OP_ILLEGAL,	-EOPNOTSUPP	},
 	{ NFS4ERR_DEADLOCK,	-EDEADLK	},
-	{ NFS4ERR_WRONGSEC,	-EPERM		}, /* FIXME: this needs
-						    * to be handled by a
-						    * middle-layer.
-						    */
 	{ -1,			-EIO		}
 };
 
@@ -6258,6 +6533,7 @@ struct rpc_procinfo	nfs4_procedures[] = {
 	PROC(SETACL,		enc_setacl,		dec_setacl),
 	PROC(FS_LOCATIONS,	enc_fs_locations,	dec_fs_locations),
 	PROC(RELEASE_LOCKOWNER,	enc_release_lockowner,	dec_release_lockowner),
+	PROC(SECINFO,		enc_secinfo,		dec_secinfo),
 #if defined(CONFIG_NFS_V4_1)
 	PROC(EXCHANGE_ID,	enc_exchange_id,	dec_exchange_id),
 	PROC(CREATE_SESSION,	enc_create_session,	dec_create_session),
@@ -6267,6 +6543,7 @@ struct rpc_procinfo	nfs4_procedures[] = {
 	PROC(RECLAIM_COMPLETE,	enc_reclaim_complete,	dec_reclaim_complete),
 	PROC(GETDEVICEINFO,	enc_getdeviceinfo,	dec_getdeviceinfo),
 	PROC(LAYOUTGET,		enc_layoutget,		dec_layoutget),
+	PROC(LAYOUTCOMMIT,	enc_layoutcommit,	dec_layoutcommit),
 #endif /* CONFIG_NFS_V4_1 */
 };
 
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 23e7944..c80add6 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -135,14 +135,14 @@ void nfs_clear_page_tag_locked(struct nfs_page *req)
 		nfs_unlock_request(req);
 }
 
-/**
+/*
  * nfs_clear_request - Free up all resources allocated to the request
  * @req:
  *
  * Release page and open context resources associated with a read/write
  * request after it has completed.
  */
-void nfs_clear_request(struct nfs_page *req)
+static void nfs_clear_request(struct nfs_page *req)
 {
 	struct page *page = req->wb_page;
 	struct nfs_open_context *ctx = req->wb_context;
@@ -223,6 +223,7 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
 	desc->pg_count = 0;
 	desc->pg_bsize = bsize;
 	desc->pg_base = 0;
+	desc->pg_moreio = 0;
 	desc->pg_inode = inode;
 	desc->pg_doio = doio;
 	desc->pg_ioflags = io_flags;
@@ -335,9 +336,11 @@ int nfs_pageio_add_request(struct nfs_pageio_descriptor *desc,
 			   struct nfs_page *req)
 {
 	while (!nfs_pageio_do_add_request(desc, req)) {
+		desc->pg_moreio = 1;
 		nfs_pageio_doio(desc);
 		if (desc->pg_error < 0)
 			return 0;
+		desc->pg_moreio = 0;
 	}
 	return 1;
 }
@@ -395,6 +398,7 @@ int nfs_scan_list(struct nfs_inode *nfsi,
 	pgoff_t idx_end;
 	int found, i;
 	int res;
+	struct list_head *list;
 
 	res = 0;
 	if (npages == 0)
@@ -415,10 +419,10 @@ int nfs_scan_list(struct nfs_inode *nfsi,
 			idx_start = req->wb_index + 1;
 			if (nfs_set_page_tag_locked(req)) {
 				kref_get(&req->wb_kref);
-				nfs_list_remove_request(req);
 				radix_tree_tag_clear(&nfsi->nfs_page_tree,
 						req->wb_index, tag);
-				nfs_list_add_request(req, dst);
+				list = pnfs_choose_commit_list(req, dst);
+				nfs_list_add_request(req, list);
 				res++;
 				if (res == INT_MAX)
 					goto out;
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index f38813a..d9ab972 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -259,6 +259,7 @@ put_lseg(struct pnfs_layout_segment *lseg)
 		pnfs_free_lseg_list(&free_me);
 	}
 }
+EXPORT_SYMBOL_GPL(put_lseg);
 
 static bool
 should_free_lseg(u32 lseg_iomode, u32 recall_iomode)
@@ -471,6 +472,9 @@ send_layoutget(struct pnfs_layout_hdr *lo,
 	struct nfs_server *server = NFS_SERVER(ino);
 	struct nfs4_layoutget *lgp;
 	struct pnfs_layout_segment *lseg = NULL;
+	struct page **pages = NULL;
+	int i;
+	u32 max_resp_sz, max_pages;
 
 	dprintk("--> %s\n", __func__);
 
@@ -478,6 +482,21 @@ send_layoutget(struct pnfs_layout_hdr *lo,
 	lgp = kzalloc(sizeof(*lgp), GFP_KERNEL);
 	if (lgp == NULL)
 		return NULL;
+
+	/* allocate pages for xdr post processing */
+	max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
+	max_pages = max_resp_sz >> PAGE_SHIFT;
+
+	pages = kzalloc(max_pages * sizeof(struct page *), GFP_KERNEL);
+	if (!pages)
+		goto out_err_free;
+
+	for (i = 0; i < max_pages; i++) {
+		pages[i] = alloc_page(GFP_KERNEL);
+		if (!pages[i])
+			goto out_err_free;
+	}
+
 	lgp->args.minlength = NFS4_MAX_UINT64;
 	lgp->args.maxcount = PNFS_LAYOUT_MAXSIZE;
 	lgp->args.range.iomode = iomode;
@@ -486,6 +505,8 @@ send_layoutget(struct pnfs_layout_hdr *lo,
 	lgp->args.type = server->pnfs_curr_ld->id;
 	lgp->args.inode = ino;
 	lgp->args.ctx = get_nfs_open_context(ctx);
+	lgp->args.layout.pages = pages;
+	lgp->args.layout.pglen = max_pages * PAGE_SIZE;
 	lgp->lsegpp = &lseg;
 
 	/* Synchronously retrieve layout information from server and
@@ -496,7 +517,26 @@ send_layoutget(struct pnfs_layout_hdr *lo,
 		/* remember that LAYOUTGET failed and suspend trying */
 		set_bit(lo_fail_bit(iomode), &lo->plh_flags);
 	}
+
+	/* free xdr pages */
+	for (i = 0; i < max_pages; i++)
+		__free_page(pages[i]);
+	kfree(pages);
+
 	return lseg;
+
+out_err_free:
+	/* free any allocated xdr pages, lgp as it's not used */
+	if (pages) {
+		for (i = 0; i < max_pages; i++) {
+			if (!pages[i])
+				break;
+			__free_page(pages[i]);
+		}
+		kfree(pages);
+	}
+	kfree(lgp);
+	return NULL;
 }
 
 bool pnfs_roc(struct inode *ino)
@@ -945,3 +985,105 @@ pnfs_try_to_read_data(struct nfs_read_data *rdata,
 	dprintk("%s End (trypnfs:%d)\n", __func__, trypnfs);
 	return trypnfs;
 }
+
+/*
+ * Currently there is only one (whole file) write lseg.
+ */
+static struct pnfs_layout_segment *pnfs_list_write_lseg(struct inode *inode)
+{
+	struct pnfs_layout_segment *lseg, *rv = NULL;
+
+	list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list)
+		if (lseg->pls_range.iomode == IOMODE_RW)
+			rv = lseg;
+	return rv;
+}
+
+void
+pnfs_set_layoutcommit(struct nfs_write_data *wdata)
+{
+	struct nfs_inode *nfsi = NFS_I(wdata->inode);
+	loff_t end_pos = wdata->args.offset + wdata->res.count;
+
+	spin_lock(&nfsi->vfs_inode.i_lock);
+	if (!test_and_set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) {
+		/* references matched in nfs4_layoutcommit_release */
+		get_lseg(wdata->lseg);
+		wdata->lseg->pls_lc_cred =
+			get_rpccred(wdata->args.context->state->owner->so_cred);
+		mark_inode_dirty_sync(wdata->inode);
+		dprintk("%s: Set layoutcommit for inode %lu ",
+			__func__, wdata->inode->i_ino);
+	}
+	if (end_pos > wdata->lseg->pls_end_pos)
+		wdata->lseg->pls_end_pos = end_pos;
+	spin_unlock(&nfsi->vfs_inode.i_lock);
+}
+EXPORT_SYMBOL_GPL(pnfs_set_layoutcommit);
+
+/*
+ * For the LAYOUT4_NFSV4_1_FILES layout type, NFS_DATA_SYNC WRITEs and
+ * NFS_UNSTABLE WRITEs with a COMMIT to data servers must store enough
+ * data to disk to allow the server to recover the data if it crashes.
+ * LAYOUTCOMMIT is only needed when the NFL4_UFLG_COMMIT_THRU_MDS flag
+ * is off, and a COMMIT is sent to a data server, or
+ * if WRITEs to a data server return NFS_DATA_SYNC.
+ */
+int
+pnfs_layoutcommit_inode(struct inode *inode, bool sync)
+{
+	struct nfs4_layoutcommit_data *data;
+	struct nfs_inode *nfsi = NFS_I(inode);
+	struct pnfs_layout_segment *lseg;
+	struct rpc_cred *cred;
+	loff_t end_pos;
+	int status = 0;
+
+	dprintk("--> %s inode %lu\n", __func__, inode->i_ino);
+
+	if (!test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags))
+		return 0;
+
+	/* Note kzalloc ensures data->res.seq_res.sr_slot == NULL */
+	data = kzalloc(sizeof(*data), GFP_NOFS);
+	if (!data) {
+		mark_inode_dirty_sync(inode);
+		status = -ENOMEM;
+		goto out;
+	}
+
+	spin_lock(&inode->i_lock);
+	if (!test_and_clear_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) {
+		spin_unlock(&inode->i_lock);
+		kfree(data);
+		goto out;
+	}
+	/*
+	 * Currently only one (whole file) write lseg which is referenced
+	 * in pnfs_set_layoutcommit and will be found.
+	 */
+	lseg = pnfs_list_write_lseg(inode);
+
+	end_pos = lseg->pls_end_pos;
+	cred = lseg->pls_lc_cred;
+	lseg->pls_end_pos = 0;
+	lseg->pls_lc_cred = NULL;
+
+	memcpy(&data->args.stateid.data, nfsi->layout->plh_stateid.data,
+		sizeof(nfsi->layout->plh_stateid.data));
+	spin_unlock(&inode->i_lock);
+
+	data->args.inode = inode;
+	data->lseg = lseg;
+	data->cred = cred;
+	nfs_fattr_init(&data->fattr);
+	data->args.bitmask = NFS_SERVER(inode)->cache_consistency_bitmask;
+	data->res.fattr = &data->fattr;
+	data->args.lastbytewritten = end_pos - 1;
+	data->res.server = NFS_SERVER(inode);
+
+	status = nfs4_proc_layoutcommit(data, sync);
+out:
+	dprintk("<-- %s status %d\n", __func__, status);
+	return status;
+}
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 6380b94..bc48272 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -43,6 +43,8 @@ struct pnfs_layout_segment {
 	atomic_t pls_refcount;
 	unsigned long pls_flags;
 	struct pnfs_layout_hdr *pls_layout;
+	struct rpc_cred	*pls_lc_cred; /* LAYOUTCOMMIT credential */
+	loff_t pls_end_pos; /* LAYOUTCOMMIT write end */
 };
 
 enum pnfs_try_status {
@@ -74,6 +76,13 @@ struct pnfs_layoutdriver_type {
 	/* test for nfs page cache coalescing */
 	int (*pg_test)(struct nfs_pageio_descriptor *, struct nfs_page *, struct nfs_page *);
 
+	/* Returns true if layoutdriver wants to divert this request to
+	 * driver's commit routine.
+	 */
+	bool (*mark_pnfs_commit)(struct pnfs_layout_segment *lseg);
+	struct list_head * (*choose_commit_list) (struct nfs_page *req);
+	int (*commit_pagelist)(struct inode *inode, struct list_head *mds_pages, int how);
+
 	/*
 	 * Return PNFS_ATTEMPTED to indicate the layout code has attempted
 	 * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS
@@ -100,7 +109,6 @@ struct pnfs_device {
 	unsigned int  layout_type;
 	unsigned int  mincount;
 	struct page **pages;
-	void          *area;
 	unsigned int  pgbase;
 	unsigned int  pglen;
 };
@@ -145,7 +153,8 @@ bool pnfs_roc(struct inode *ino);
 void pnfs_roc_release(struct inode *ino);
 void pnfs_roc_set_barrier(struct inode *ino, u32 barrier);
 bool pnfs_roc_drain(struct inode *ino, u32 *barrier);
-
+void pnfs_set_layoutcommit(struct nfs_write_data *wdata);
+int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
 
 static inline int lo_fail_bit(u32 iomode)
 {
@@ -169,6 +178,51 @@ static inline int pnfs_enabled_sb(struct nfs_server *nfss)
 	return nfss->pnfs_curr_ld != NULL;
 }
 
+static inline void
+pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg)
+{
+	if (lseg) {
+		struct pnfs_layoutdriver_type *ld;
+
+		ld = NFS_SERVER(req->wb_page->mapping->host)->pnfs_curr_ld;
+		if (ld->mark_pnfs_commit && ld->mark_pnfs_commit(lseg)) {
+			set_bit(PG_PNFS_COMMIT, &req->wb_flags);
+			req->wb_commit_lseg = get_lseg(lseg);
+		}
+	}
+}
+
+static inline int
+pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how)
+{
+	if (!test_and_clear_bit(NFS_INO_PNFS_COMMIT, &NFS_I(inode)->flags))
+		return PNFS_NOT_ATTEMPTED;
+	return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how);
+}
+
+static inline struct list_head *
+pnfs_choose_commit_list(struct nfs_page *req, struct list_head *mds)
+{
+	struct list_head *rv;
+
+	if (test_and_clear_bit(PG_PNFS_COMMIT, &req->wb_flags)) {
+		struct inode *inode = req->wb_commit_lseg->pls_layout->plh_inode;
+
+		set_bit(NFS_INO_PNFS_COMMIT, &NFS_I(inode)->flags);
+		rv = NFS_SERVER(inode)->pnfs_curr_ld->choose_commit_list(req);
+		/* matched by ref taken when PG_PNFS_COMMIT is set */
+		put_lseg(req->wb_commit_lseg);
+	} else
+		rv = mds;
+	return rv;
+}
+
+static inline void pnfs_clear_request_commit(struct nfs_page *req)
+{
+	if (test_and_clear_bit(PG_PNFS_COMMIT, &req->wb_flags))
+		put_lseg(req->wb_commit_lseg);
+}
+
 #else  /* CONFIG_NFS_V4_1 */
 
 static inline void pnfs_destroy_all_layouts(struct nfs_client *clp)
@@ -252,6 +306,31 @@ pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *ino)
 	pgio->pg_test = NULL;
 }
 
+static inline void
+pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg)
+{
+}
+
+static inline int
+pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how)
+{
+	return PNFS_NOT_ATTEMPTED;
+}
+
+static inline struct list_head *
+pnfs_choose_commit_list(struct nfs_page *req, struct list_head *mds)
+{
+	return mds;
+}
+
+static inline void pnfs_clear_request_commit(struct nfs_page *req)
+{
+}
+
+static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync)
+{
+	return 0;
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 #endif /* FS_NFS_PNFS_H */
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index b8ec170..ac40b85 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -177,7 +177,7 @@ nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 }
 
 static int
-nfs_proc_lookup(struct inode *dir, struct qstr *name,
+nfs_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name,
 		struct nfs_fh *fhandle, struct nfs_fattr *fattr)
 {
 	struct nfs_diropargs	arg = {
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 47a3ad6..af0c627 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -59,6 +59,7 @@ struct nfs_write_data *nfs_commitdata_alloc(void)
 	}
 	return p;
 }
+EXPORT_SYMBOL_GPL(nfs_commitdata_alloc);
 
 void nfs_commit_free(struct nfs_write_data *p)
 {
@@ -66,6 +67,7 @@ void nfs_commit_free(struct nfs_write_data *p)
 		kfree(p->pagevec);
 	mempool_free(p, nfs_commit_mempool);
 }
+EXPORT_SYMBOL_GPL(nfs_commit_free);
 
 struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount)
 {
@@ -179,8 +181,8 @@ static int wb_priority(struct writeback_control *wbc)
 	if (wbc->for_reclaim)
 		return FLUSH_HIGHPRI | FLUSH_STABLE;
 	if (wbc->for_kupdate || wbc->for_background)
-		return FLUSH_LOWPRI;
-	return 0;
+		return FLUSH_LOWPRI | FLUSH_COND_STABLE;
+	return FLUSH_COND_STABLE;
 }
 
 /*
@@ -387,11 +389,8 @@ static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
 	spin_lock(&inode->i_lock);
 	error = radix_tree_insert(&nfsi->nfs_page_tree, req->wb_index, req);
 	BUG_ON(error);
-	if (!nfsi->npages) {
-		igrab(inode);
-		if (nfs_have_delegation(inode, FMODE_WRITE))
-			nfsi->change_attr++;
-	}
+	if (!nfsi->npages && nfs_have_delegation(inode, FMODE_WRITE))
+		nfsi->change_attr++;
 	set_bit(PG_MAPPED, &req->wb_flags);
 	SetPagePrivate(req->wb_page);
 	set_page_private(req->wb_page, (unsigned long)req);
@@ -421,11 +420,7 @@ static void nfs_inode_remove_request(struct nfs_page *req)
 	clear_bit(PG_MAPPED, &req->wb_flags);
 	radix_tree_delete(&nfsi->nfs_page_tree, req->wb_index);
 	nfsi->npages--;
-	if (!nfsi->npages) {
-		spin_unlock(&inode->i_lock);
-		iput(inode);
-	} else
-		spin_unlock(&inode->i_lock);
+	spin_unlock(&inode->i_lock);
 	nfs_release_request(req);
 }
 
@@ -441,7 +436,7 @@ nfs_mark_request_dirty(struct nfs_page *req)
  * Add a request to the inode's commit list.
  */
 static void
-nfs_mark_request_commit(struct nfs_page *req)
+nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg)
 {
 	struct inode *inode = req->wb_context->path.dentry->d_inode;
 	struct nfs_inode *nfsi = NFS_I(inode);
@@ -453,6 +448,7 @@ nfs_mark_request_commit(struct nfs_page *req)
 			NFS_PAGE_TAG_COMMIT);
 	nfsi->ncommit++;
 	spin_unlock(&inode->i_lock);
+	pnfs_mark_request_commit(req, lseg);
 	inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
 	inc_bdi_stat(req->wb_page->mapping->backing_dev_info, BDI_RECLAIMABLE);
 	__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
@@ -474,14 +470,18 @@ nfs_clear_request_commit(struct nfs_page *req)
 static inline
 int nfs_write_need_commit(struct nfs_write_data *data)
 {
-	return data->verf.committed != NFS_FILE_SYNC;
+	if (data->verf.committed == NFS_DATA_SYNC)
+		return data->lseg == NULL;
+	else
+		return data->verf.committed != NFS_FILE_SYNC;
 }
 
 static inline
-int nfs_reschedule_unstable_write(struct nfs_page *req)
+int nfs_reschedule_unstable_write(struct nfs_page *req,
+				  struct nfs_write_data *data)
 {
 	if (test_and_clear_bit(PG_NEED_COMMIT, &req->wb_flags)) {
-		nfs_mark_request_commit(req);
+		nfs_mark_request_commit(req, data->lseg);
 		return 1;
 	}
 	if (test_and_clear_bit(PG_NEED_RESCHED, &req->wb_flags)) {
@@ -492,7 +492,7 @@ int nfs_reschedule_unstable_write(struct nfs_page *req)
 }
 #else
 static inline void
-nfs_mark_request_commit(struct nfs_page *req)
+nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg)
 {
 }
 
@@ -509,7 +509,8 @@ int nfs_write_need_commit(struct nfs_write_data *data)
 }
 
 static inline
-int nfs_reschedule_unstable_write(struct nfs_page *req)
+int nfs_reschedule_unstable_write(struct nfs_page *req,
+				  struct nfs_write_data *data)
 {
 	return 0;
 }
@@ -612,9 +613,11 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode,
 	}
 
 	if (nfs_clear_request_commit(req) &&
-			radix_tree_tag_clear(&NFS_I(inode)->nfs_page_tree,
-				req->wb_index, NFS_PAGE_TAG_COMMIT) != NULL)
+	    radix_tree_tag_clear(&NFS_I(inode)->nfs_page_tree,
+				 req->wb_index, NFS_PAGE_TAG_COMMIT) != NULL) {
 		NFS_I(inode)->ncommit--;
+		pnfs_clear_request_commit(req);
+	}
 
 	/* Okay, the request matches. Update the region */
 	if (offset < req->wb_offset) {
@@ -762,11 +765,12 @@ int nfs_updatepage(struct file *file, struct page *page,
 	return status;
 }
 
-static void nfs_writepage_release(struct nfs_page *req)
+static void nfs_writepage_release(struct nfs_page *req,
+				  struct nfs_write_data *data)
 {
 	struct page *page = req->wb_page;
 
-	if (PageError(req->wb_page) || !nfs_reschedule_unstable_write(req))
+	if (PageError(req->wb_page) || !nfs_reschedule_unstable_write(req, data))
 		nfs_inode_remove_request(req);
 	nfs_clear_page_tag_locked(req);
 	nfs_end_page_writeback(page);
@@ -863,7 +867,7 @@ static int nfs_write_rpcsetup(struct nfs_page *req,
 	data->args.context = get_nfs_open_context(req->wb_context);
 	data->args.lock_context = req->wb_lock_context;
 	data->args.stable  = NFS_UNSTABLE;
-	if (how & FLUSH_STABLE) {
+	if (how & (FLUSH_STABLE | FLUSH_COND_STABLE)) {
 		data->args.stable = NFS_DATA_SYNC;
 		if (!nfs_need_commit(NFS_I(inode)))
 			data->args.stable = NFS_FILE_SYNC;
@@ -912,6 +916,12 @@ static int nfs_flush_multi(struct nfs_pageio_descriptor *desc)
 
 	nfs_list_remove_request(req);
 
+	if ((desc->pg_ioflags & FLUSH_COND_STABLE) &&
+	    (desc->pg_moreio || NFS_I(desc->pg_inode)->ncommit ||
+	     desc->pg_count > wsize))
+		desc->pg_ioflags &= ~FLUSH_COND_STABLE;
+
+
 	nbytes = desc->pg_count;
 	do {
 		size_t len = min(nbytes, wsize);
@@ -1002,6 +1012,10 @@ static int nfs_flush_one(struct nfs_pageio_descriptor *desc)
 	if ((!lseg) && list_is_singular(&data->pages))
 		lseg = pnfs_update_layout(desc->pg_inode, req->wb_context, IOMODE_RW);
 
+	if ((desc->pg_ioflags & FLUSH_COND_STABLE) &&
+	    (desc->pg_moreio || NFS_I(desc->pg_inode)->ncommit))
+		desc->pg_ioflags &= ~FLUSH_COND_STABLE;
+
 	/* Set up the argument struct */
 	ret = nfs_write_rpcsetup(req, data, &nfs_write_full_ops, desc->pg_count, 0, lseg, desc->pg_ioflags);
 out:
@@ -1074,7 +1088,7 @@ static void nfs_writeback_release_partial(void *calldata)
 
 out:
 	if (atomic_dec_and_test(&req->wb_complete))
-		nfs_writepage_release(req);
+		nfs_writepage_release(req, data);
 	nfs_writedata_release(calldata);
 }
 
@@ -1141,7 +1155,7 @@ static void nfs_writeback_release_full(void *calldata)
 
 		if (nfs_write_need_commit(data)) {
 			memcpy(&req->wb_verf, &data->verf, sizeof(req->wb_verf));
-			nfs_mark_request_commit(req);
+			nfs_mark_request_commit(req, data->lseg);
 			dprintk(" marked for commit\n");
 			goto next;
 		}
@@ -1251,57 +1265,82 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
 #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
 static int nfs_commit_set_lock(struct nfs_inode *nfsi, int may_wait)
 {
+	int ret;
+
 	if (!test_and_set_bit(NFS_INO_COMMIT, &nfsi->flags))
 		return 1;
-	if (may_wait && !out_of_line_wait_on_bit_lock(&nfsi->flags,
-				NFS_INO_COMMIT, nfs_wait_bit_killable,
-				TASK_KILLABLE))
-		return 1;
-	return 0;
+	if (!may_wait)
+		return 0;
+	ret = out_of_line_wait_on_bit_lock(&nfsi->flags,
+				NFS_INO_COMMIT,
+				nfs_wait_bit_killable,
+				TASK_KILLABLE);
+	return (ret < 0) ? ret : 1;
 }
 
-static void nfs_commit_clear_lock(struct nfs_inode *nfsi)
+void nfs_commit_clear_lock(struct nfs_inode *nfsi)
 {
 	clear_bit(NFS_INO_COMMIT, &nfsi->flags);
 	smp_mb__after_clear_bit();
 	wake_up_bit(&nfsi->flags, NFS_INO_COMMIT);
 }
+EXPORT_SYMBOL_GPL(nfs_commit_clear_lock);
 
-
-static void nfs_commitdata_release(void *data)
+void nfs_commitdata_release(void *data)
 {
 	struct nfs_write_data *wdata = data;
 
+	put_lseg(wdata->lseg);
 	put_nfs_open_context(wdata->args.context);
 	nfs_commit_free(wdata);
 }
+EXPORT_SYMBOL_GPL(nfs_commitdata_release);
 
-/*
- * Set up the argument/result storage required for the RPC call.
- */
-static int nfs_commit_rpcsetup(struct list_head *head,
-		struct nfs_write_data *data,
-		int how)
+int nfs_initiate_commit(struct nfs_write_data *data, struct rpc_clnt *clnt,
+			const struct rpc_call_ops *call_ops,
+			int how)
 {
-	struct nfs_page *first = nfs_list_entry(head->next);
-	struct inode *inode = first->wb_context->path.dentry->d_inode;
-	int priority = flush_task_priority(how);
 	struct rpc_task *task;
+	int priority = flush_task_priority(how);
 	struct rpc_message msg = {
 		.rpc_argp = &data->args,
 		.rpc_resp = &data->res,
-		.rpc_cred = first->wb_context->cred,
+		.rpc_cred = data->cred,
 	};
 	struct rpc_task_setup task_setup_data = {
 		.task = &data->task,
-		.rpc_client = NFS_CLIENT(inode),
+		.rpc_client = clnt,
 		.rpc_message = &msg,
-		.callback_ops = &nfs_commit_ops,
+		.callback_ops = call_ops,
 		.callback_data = data,
 		.workqueue = nfsiod_workqueue,
 		.flags = RPC_TASK_ASYNC,
 		.priority = priority,
 	};
+	/* Set up the initial task struct.  */
+	NFS_PROTO(data->inode)->commit_setup(data, &msg);
+
+	dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
+
+	task = rpc_run_task(&task_setup_data);
+	if (IS_ERR(task))
+		return PTR_ERR(task);
+	if (how & FLUSH_SYNC)
+		rpc_wait_for_completion_task(task);
+	rpc_put_task(task);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(nfs_initiate_commit);
+
+/*
+ * Set up the argument/result storage required for the RPC call.
+ */
+void nfs_init_commit(struct nfs_write_data *data,
+			    struct list_head *head,
+			    struct pnfs_layout_segment *lseg)
+{
+	struct nfs_page *first = nfs_list_entry(head->next);
+	struct inode *inode = first->wb_context->path.dentry->d_inode;
 
 	/* Set up the RPC argument and reply structs
 	 * NB: take care not to mess about with data->commit et al. */
@@ -1309,7 +1348,9 @@ static int nfs_commit_rpcsetup(struct list_head *head,
 	list_splice_init(head, &data->pages);
 
 	data->inode	  = inode;
-	data->cred	  = msg.rpc_cred;
+	data->cred	  = first->wb_context->cred;
+	data->lseg	  = lseg; /* reference transferred */
+	data->mds_ops     = &nfs_commit_ops;
 
 	data->args.fh     = NFS_FH(data->inode);
 	/* Note: we always request a commit of the entire inode */
@@ -1320,20 +1361,25 @@ static int nfs_commit_rpcsetup(struct list_head *head,
 	data->res.fattr   = &data->fattr;
 	data->res.verf    = &data->verf;
 	nfs_fattr_init(&data->fattr);
+}
+EXPORT_SYMBOL_GPL(nfs_init_commit);
 
-	/* Set up the initial task struct.  */
-	NFS_PROTO(inode)->commit_setup(data, &msg);
-
-	dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
+void nfs_retry_commit(struct list_head *page_list,
+		      struct pnfs_layout_segment *lseg)
+{
+	struct nfs_page *req;
 
-	task = rpc_run_task(&task_setup_data);
-	if (IS_ERR(task))
-		return PTR_ERR(task);
-	if (how & FLUSH_SYNC)
-		rpc_wait_for_completion_task(task);
-	rpc_put_task(task);
-	return 0;
+	while (!list_empty(page_list)) {
+		req = nfs_list_entry(page_list->next);
+		nfs_list_remove_request(req);
+		nfs_mark_request_commit(req, lseg);
+		dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
+		dec_bdi_stat(req->wb_page->mapping->backing_dev_info,
+			     BDI_RECLAIMABLE);
+		nfs_clear_page_tag_locked(req);
+	}
 }
+EXPORT_SYMBOL_GPL(nfs_retry_commit);
 
 /*
  * Commit dirty pages
@@ -1342,7 +1388,6 @@ static int
 nfs_commit_list(struct inode *inode, struct list_head *head, int how)
 {
 	struct nfs_write_data	*data;
-	struct nfs_page         *req;
 
 	data = nfs_commitdata_alloc();
 
@@ -1350,17 +1395,10 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
 		goto out_bad;
 
 	/* Set up the argument struct */
-	return nfs_commit_rpcsetup(head, data, how);
+	nfs_init_commit(data, head, NULL);
+	return nfs_initiate_commit(data, NFS_CLIENT(inode), data->mds_ops, how);
  out_bad:
-	while (!list_empty(head)) {
-		req = nfs_list_entry(head->next);
-		nfs_list_remove_request(req);
-		nfs_mark_request_commit(req);
-		dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
-		dec_bdi_stat(req->wb_page->mapping->backing_dev_info,
-				BDI_RECLAIMABLE);
-		nfs_clear_page_tag_locked(req);
-	}
+	nfs_retry_commit(head, NULL);
 	nfs_commit_clear_lock(NFS_I(inode));
 	return -ENOMEM;
 }
@@ -1380,10 +1418,9 @@ static void nfs_commit_done(struct rpc_task *task, void *calldata)
 		return;
 }
 
-static void nfs_commit_release(void *calldata)
+void nfs_commit_release_pages(struct nfs_write_data *data)
 {
-	struct nfs_write_data	*data = calldata;
-	struct nfs_page		*req;
+	struct nfs_page	*req;
 	int status = data->task.tk_status;
 
 	while (!list_empty(&data->pages)) {
@@ -1417,6 +1454,14 @@ static void nfs_commit_release(void *calldata)
 	next:
 		nfs_clear_page_tag_locked(req);
 	}
+}
+EXPORT_SYMBOL_GPL(nfs_commit_release_pages);
+
+static void nfs_commit_release(void *calldata)
+{
+	struct nfs_write_data *data = calldata;
+
+	nfs_commit_release_pages(data);
 	nfs_commit_clear_lock(NFS_I(data->inode));
 	nfs_commitdata_release(calldata);
 }
@@ -1433,23 +1478,30 @@ int nfs_commit_inode(struct inode *inode, int how)
 {
 	LIST_HEAD(head);
 	int may_wait = how & FLUSH_SYNC;
-	int res = 0;
+	int res;
 
-	if (!nfs_commit_set_lock(NFS_I(inode), may_wait))
+	res = nfs_commit_set_lock(NFS_I(inode), may_wait);
+	if (res <= 0)
 		goto out_mark_dirty;
 	spin_lock(&inode->i_lock);
 	res = nfs_scan_commit(inode, &head, 0, 0);
 	spin_unlock(&inode->i_lock);
 	if (res) {
-		int error = nfs_commit_list(inode, &head, how);
+		int error;
+
+		error = pnfs_commit_list(inode, &head, how);
+		if (error == PNFS_NOT_ATTEMPTED)
+			error = nfs_commit_list(inode, &head, how);
 		if (error < 0)
 			return error;
-		if (may_wait)
-			wait_on_bit(&NFS_I(inode)->flags, NFS_INO_COMMIT,
-					nfs_wait_bit_killable,
-					TASK_KILLABLE);
-		else
+		if (!may_wait)
 			goto out_mark_dirty;
+		error = wait_on_bit(&NFS_I(inode)->flags,
+				NFS_INO_COMMIT,
+				nfs_wait_bit_killable,
+				TASK_KILLABLE);
+		if (error < 0)
+			return error;
 	} else
 		nfs_commit_clear_lock(NFS_I(inode));
 	return res;
@@ -1503,7 +1555,22 @@ static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_contr
 
 int nfs_write_inode(struct inode *inode, struct writeback_control *wbc)
 {
-	return nfs_commit_unstable_pages(inode, wbc);
+	int ret;
+
+	ret = nfs_commit_unstable_pages(inode, wbc);
+	if (ret >= 0 && test_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags)) {
+		int status;
+		bool sync = true;
+
+		if (wbc->sync_mode == WB_SYNC_NONE || wbc->nonblocking ||
+		    wbc->for_background)
+			sync = false;
+
+		status = pnfs_layoutcommit_inode(inode, sync);
+		if (status < 0)
+			return status;
+	}
+	return ret;
 }
 
 /*
diff --git a/fs/nfs_common/nfsacl.c b/fs/nfs_common/nfsacl.c
index 84c27d6..ec0f277 100644
--- a/fs/nfs_common/nfsacl.c
+++ b/fs/nfs_common/nfsacl.c
@@ -117,7 +117,6 @@ int nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,
 		 * invoked in contexts where a memory allocation failure is
 		 * fatal.  Fortunately this fake ACL is small enough to
 		 * construct on the stack. */
-		memset(acl2, 0, sizeof(acl2));
 		posix_acl_init(acl2, 4);
 
 		/* Insert entries in canonical order: other orders seem
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 8b31e5f..ad000ae 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -299,7 +299,6 @@ svc_expkey_update(struct svc_expkey *new, struct svc_expkey *old)
 
 #define	EXPORT_HASHBITS		8
 #define	EXPORT_HASHMAX		(1<< EXPORT_HASHBITS)
-#define	EXPORT_HASHMASK		(EXPORT_HASHMAX -1)
 
 static struct cache_head *export_table[EXPORT_HASHMAX];
 
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index 6d2c397..55780a2 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -63,7 +63,6 @@ struct ent {
 
 #define ENT_HASHBITS          8
 #define ENT_HASHMAX           (1 << ENT_HASHBITS)
-#define ENT_HASHMASK          (ENT_HASHMAX - 1)
 
 static void
 ent_init(struct cache_head *cnew, struct cache_head *citm)
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index db52546..5fcb139 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -984,8 +984,8 @@ typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
 			      void *);
 enum nfsd4_op_flags {
 	ALLOWED_WITHOUT_FH = 1 << 0,	/* No current filehandle required */
-	ALLOWED_ON_ABSENT_FS = 2 << 0,	/* ops processed on absent fs */
-	ALLOWED_AS_FIRST_OP = 3 << 0,	/* ops reqired first in compound */
+	ALLOWED_ON_ABSENT_FS = 1 << 1,	/* ops processed on absent fs */
+	ALLOWED_AS_FIRST_OP = 1 << 2,	/* ops reqired first in compound */
 };
 
 struct nfsd4_operation {
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 7b566ec..fbde6f7 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -148,7 +148,7 @@ static struct list_head	ownerstr_hashtbl[OWNER_HASH_SIZE];
 /* hash table for nfs4_file */
 #define FILE_HASH_BITS                   8
 #define FILE_HASH_SIZE                  (1 << FILE_HASH_BITS)
-#define FILE_HASH_MASK                  (FILE_HASH_SIZE - 1)
+
 /* hash table for (open)nfs4_stateid */
 #define STATEID_HASH_BITS              10
 #define STATEID_HASH_SIZE              (1 << STATEID_HASH_BITS)
@@ -316,64 +316,6 @@ static struct list_head	unconf_id_hashtbl[CLIENT_HASH_SIZE];
 static struct list_head client_lru;
 static struct list_head close_lru;
 
-static void unhash_generic_stateid(struct nfs4_stateid *stp)
-{
-	list_del(&stp->st_hash);
-	list_del(&stp->st_perfile);
-	list_del(&stp->st_perstateowner);
-}
-
-static void free_generic_stateid(struct nfs4_stateid *stp)
-{
-	put_nfs4_file(stp->st_file);
-	kmem_cache_free(stateid_slab, stp);
-}
-
-static void release_lock_stateid(struct nfs4_stateid *stp)
-{
-	struct file *file;
-
-	unhash_generic_stateid(stp);
-	file = find_any_file(stp->st_file);
-	if (file)
-		locks_remove_posix(file, (fl_owner_t)stp->st_stateowner);
-	free_generic_stateid(stp);
-}
-
-static void unhash_lockowner(struct nfs4_stateowner *sop)
-{
-	struct nfs4_stateid *stp;
-
-	list_del(&sop->so_idhash);
-	list_del(&sop->so_strhash);
-	list_del(&sop->so_perstateid);
-	while (!list_empty(&sop->so_stateids)) {
-		stp = list_first_entry(&sop->so_stateids,
-				struct nfs4_stateid, st_perstateowner);
-		release_lock_stateid(stp);
-	}
-}
-
-static void release_lockowner(struct nfs4_stateowner *sop)
-{
-	unhash_lockowner(sop);
-	nfs4_put_stateowner(sop);
-}
-
-static void
-release_stateid_lockowners(struct nfs4_stateid *open_stp)
-{
-	struct nfs4_stateowner *lock_sop;
-
-	while (!list_empty(&open_stp->st_lockowners)) {
-		lock_sop = list_entry(open_stp->st_lockowners.next,
-				struct nfs4_stateowner, so_perstateid);
-		/* list_del(&open_stp->st_lockowners);  */
-		BUG_ON(lock_sop->so_is_open_owner);
-		release_lockowner(lock_sop);
-	}
-}
-
 /*
  * We store the NONE, READ, WRITE, and BOTH bits separately in the
  * st_{access,deny}_bmap field of the stateid, in order to track not
@@ -446,13 +388,71 @@ static int nfs4_access_bmap_to_omode(struct nfs4_stateid *stp)
 	return nfs4_access_to_omode(access);
 }
 
-static void release_open_stateid(struct nfs4_stateid *stp)
+static void unhash_generic_stateid(struct nfs4_stateid *stp)
+{
+	list_del(&stp->st_hash);
+	list_del(&stp->st_perfile);
+	list_del(&stp->st_perstateowner);
+}
+
+static void free_generic_stateid(struct nfs4_stateid *stp)
 {
 	int oflag = nfs4_access_bmap_to_omode(stp);
 
+	nfs4_file_put_access(stp->st_file, oflag);
+	put_nfs4_file(stp->st_file);
+	kmem_cache_free(stateid_slab, stp);
+}
+
+static void release_lock_stateid(struct nfs4_stateid *stp)
+{
+	struct file *file;
+
+	unhash_generic_stateid(stp);
+	file = find_any_file(stp->st_file);
+	if (file)
+		locks_remove_posix(file, (fl_owner_t)stp->st_stateowner);
+	free_generic_stateid(stp);
+}
+
+static void unhash_lockowner(struct nfs4_stateowner *sop)
+{
+	struct nfs4_stateid *stp;
+
+	list_del(&sop->so_idhash);
+	list_del(&sop->so_strhash);
+	list_del(&sop->so_perstateid);
+	while (!list_empty(&sop->so_stateids)) {
+		stp = list_first_entry(&sop->so_stateids,
+				struct nfs4_stateid, st_perstateowner);
+		release_lock_stateid(stp);
+	}
+}
+
+static void release_lockowner(struct nfs4_stateowner *sop)
+{
+	unhash_lockowner(sop);
+	nfs4_put_stateowner(sop);
+}
+
+static void
+release_stateid_lockowners(struct nfs4_stateid *open_stp)
+{
+	struct nfs4_stateowner *lock_sop;
+
+	while (!list_empty(&open_stp->st_lockowners)) {
+		lock_sop = list_entry(open_stp->st_lockowners.next,
+				struct nfs4_stateowner, so_perstateid);
+		/* list_del(&open_stp->st_lockowners);  */
+		BUG_ON(lock_sop->so_is_open_owner);
+		release_lockowner(lock_sop);
+	}
+}
+
+static void release_open_stateid(struct nfs4_stateid *stp)
+{
 	unhash_generic_stateid(stp);
 	release_stateid_lockowners(stp);
-	nfs4_file_put_access(stp->st_file, oflag);
 	free_generic_stateid(stp);
 }
 
@@ -608,7 +608,8 @@ static void init_forechannel_attrs(struct nfsd4_channel_attrs *new, struct nfsd4
 	u32 maxrpc = nfsd_serv->sv_max_mesg;
 
 	new->maxreqs = numslots;
-	new->maxresp_cached = slotsize + NFSD_MIN_HDR_SEQ_SZ;
+	new->maxresp_cached = min_t(u32, req->maxresp_cached,
+					slotsize + NFSD_MIN_HDR_SEQ_SZ);
 	new->maxreq_sz = min_t(u32, req->maxreq_sz, maxrpc);
 	new->maxresp_sz = min_t(u32, req->maxresp_sz, maxrpc);
 	new->maxops = min_t(u32, req->maxops, NFSD_MAX_OPS_PER_COMPOUND);
@@ -3735,6 +3736,7 @@ alloc_init_lock_stateid(struct nfs4_stateowner *sop, struct nfs4_file *fp, struc
 	stp->st_stateid.si_stateownerid = sop->so_id;
 	stp->st_stateid.si_fileid = fp->fi_id;
 	stp->st_stateid.si_generation = 0;
+	stp->st_access_bmap = 0;
 	stp->st_deny_bmap = open_stp->st_deny_bmap;
 	stp->st_openstp = open_stp;
 
@@ -3749,6 +3751,17 @@ check_lock_length(u64 offset, u64 length)
 	     LOFF_OVERFLOW(offset, length)));
 }
 
+static void get_lock_access(struct nfs4_stateid *lock_stp, u32 access)
+{
+	struct nfs4_file *fp = lock_stp->st_file;
+	int oflag = nfs4_access_to_omode(access);
+
+	if (test_bit(access, &lock_stp->st_access_bmap))
+		return;
+	nfs4_file_get_access(fp, oflag);
+	__set_bit(access, &lock_stp->st_access_bmap);
+}
+
 /*
  *  LOCK operation 
  */
@@ -3765,7 +3778,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	struct file_lock conflock;
 	__be32 status = 0;
 	unsigned int strhashval;
-	unsigned int cmd;
 	int err;
 
 	dprintk("NFSD: nfsd4_lock: start=%Ld length=%Ld\n",
@@ -3847,22 +3859,18 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	switch (lock->lk_type) {
 		case NFS4_READ_LT:
 		case NFS4_READW_LT:
-			if (find_readable_file(lock_stp->st_file)) {
-				nfs4_get_vfs_file(rqstp, fp, &cstate->current_fh, NFS4_SHARE_ACCESS_READ);
-				filp = find_readable_file(lock_stp->st_file);
-			}
+			filp = find_readable_file(lock_stp->st_file);
+			if (filp)
+				get_lock_access(lock_stp, NFS4_SHARE_ACCESS_READ);
 			file_lock.fl_type = F_RDLCK;
-			cmd = F_SETLK;
-		break;
+			break;
 		case NFS4_WRITE_LT:
 		case NFS4_WRITEW_LT:
-			if (find_writeable_file(lock_stp->st_file)) {
-				nfs4_get_vfs_file(rqstp, fp, &cstate->current_fh, NFS4_SHARE_ACCESS_WRITE);
-				filp = find_writeable_file(lock_stp->st_file);
-			}
+			filp = find_writeable_file(lock_stp->st_file);
+			if (filp)
+				get_lock_access(lock_stp, NFS4_SHARE_ACCESS_WRITE);
 			file_lock.fl_type = F_WRLCK;
-			cmd = F_SETLK;
-		break;
+			break;
 		default:
 			status = nfserr_inval;
 		goto out;
@@ -3886,7 +3894,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	* Note: locks.c uses the BKL to protect the inode's lock list.
 	*/
 
-	err = vfs_lock_file(filp, cmd, &file_lock, &conflock);
+	err = vfs_lock_file(filp, F_SETLK, &file_lock, &conflock);
 	switch (-err) {
 	case 0: /* success! */
 		update_stateid(&lock_stp->st_stateid);
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 615f0a9..c6766af 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1142,7 +1142,7 @@ nfsd4_decode_create_session(struct nfsd4_compoundargs *argp,
 
 	u32 dummy;
 	char *machine_name;
-	int i, j;
+	int i;
 	int nr_secflavs;
 
 	READ_BUF(16);
@@ -1215,8 +1215,6 @@ nfsd4_decode_create_session(struct nfsd4_compoundargs *argp,
 			READ_BUF(4);
 			READ32(dummy);
 			READ_BUF(dummy * 4);
-			for (j = 0; j < dummy; ++j)
-				READ32(dummy);
 			break;
 		case RPC_AUTH_GSS:
 			dprintk("RPC_AUTH_GSS callback secflavor "
@@ -1232,7 +1230,6 @@ nfsd4_decode_create_session(struct nfsd4_compoundargs *argp,
 			READ_BUF(4);
 			READ32(dummy);
 			READ_BUF(dummy);
-			p += XDR_QUADLEN(dummy);
 			break;
 		default:
 			dprintk("Illegal callback secflavor\n");
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 33b3e2b..1f5eae4 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -12,13 +12,14 @@
 #include <linux/nfsd/syscall.h>
 #include <linux/lockd/lockd.h>
 #include <linux/sunrpc/clnt.h>
+#include <linux/sunrpc/gss_api.h>
 
 #include "idmap.h"
 #include "nfsd.h"
 #include "cache.h"
 
 /*
- *	We have a single directory with 9 nodes in it.
+ *	We have a single directory with several nodes in it.
  */
 enum {
 	NFSD_Root = 1,
@@ -42,6 +43,7 @@ enum {
 	NFSD_Versions,
 	NFSD_Ports,
 	NFSD_MaxBlkSize,
+	NFSD_SupportedEnctypes,
 	/*
 	 * The below MUST come last.  Otherwise we leave a hole in nfsd_files[]
 	 * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops
@@ -187,6 +189,34 @@ static struct file_operations export_features_operations = {
 	.release	= single_release,
 };
 
+#ifdef CONFIG_SUNRPC_GSS
+static int supported_enctypes_show(struct seq_file *m, void *v)
+{
+	struct gss_api_mech *k5mech;
+
+	k5mech = gss_mech_get_by_name("krb5");
+	if (k5mech == NULL)
+		goto out;
+	if (k5mech->gm_upcall_enctypes != NULL)
+		seq_printf(m, k5mech->gm_upcall_enctypes);
+	gss_mech_put(k5mech);
+out:
+	return 0;
+}
+
+static int supported_enctypes_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, supported_enctypes_show, NULL);
+}
+
+static struct file_operations supported_enctypes_ops = {
+	.open		= supported_enctypes_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+#endif /* CONFIG_SUNRPC_GSS */
+
 extern int nfsd_pool_stats_open(struct inode *inode, struct file *file);
 extern int nfsd_pool_stats_release(struct inode *inode, struct file *file);
 
@@ -1397,6 +1427,9 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
 		[NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
 		[NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
 		[NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
+#ifdef CONFIG_SUNRPC_GSS
+		[NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO},
+#endif /* CONFIG_SUNRPC_GSS */
 #ifdef CONFIG_NFSD_V4
 		[NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
 		[NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR},
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 2d31224..6bd2f3c 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -367,16 +367,12 @@ struct nfs4_file {
 	struct list_head	fi_delegations;
 	/* One each for O_RDONLY, O_WRONLY, O_RDWR: */
 	struct file *		fi_fds[3];
-	/* One each for O_RDONLY, O_WRONLY: */
-	atomic_t		fi_access[2];
 	/*
-	 * Each open stateid contributes 1 to either fi_readers or
-	 * fi_writers, or both, depending on the open mode.  A
-	 * delegation also takes an fi_readers reference.  Lock
-	 * stateid's take none.
+	 * Each open or lock stateid contributes 1 to either
+	 * fi_access[O_RDONLY], fi_access[O_WRONLY], or both, depending
+	 * on open or lock mode:
 	 */
-	atomic_t		fi_readers;
-	atomic_t		fi_writers;
+	atomic_t		fi_access[2];
 	struct file		*fi_deleg_file;
 	struct file_lock	*fi_lease;
 	atomic_t		fi_delegees;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index ff93025..2e1cebd 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1749,8 +1749,6 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
 		if (host_err)
 			goto out_drop_write;
 	}
-	if (host_err)
-		goto out_drop_write;
 	host_err = vfs_rename(fdir, odentry, tdir, ndentry);
 	if (!host_err) {
 		host_err = commit_metadata(tfhp);
diff --git a/fs/nilfs2/alloc.c b/fs/nilfs2/alloc.c
index d7fd696..0a0a66d 100644
--- a/fs/nilfs2/alloc.c
+++ b/fs/nilfs2/alloc.c
@@ -521,8 +521,8 @@ void nilfs_palloc_commit_free_entry(struct inode *inode,
 				    group_offset, bitmap))
 		printk(KERN_WARNING "%s: entry number %llu already freed\n",
 		       __func__, (unsigned long long)req->pr_entry_nr);
-
-	nilfs_palloc_group_desc_add_entries(inode, group, desc, 1);
+	else
+		nilfs_palloc_group_desc_add_entries(inode, group, desc, 1);
 
 	kunmap(req->pr_bitmap_bh->b_page);
 	kunmap(req->pr_desc_bh->b_page);
@@ -558,8 +558,8 @@ void nilfs_palloc_abort_alloc_entry(struct inode *inode,
 				    group_offset, bitmap))
 		printk(KERN_WARNING "%s: entry number %llu already freed\n",
 		       __func__, (unsigned long long)req->pr_entry_nr);
-
-	nilfs_palloc_group_desc_add_entries(inode, group, desc, 1);
+	else
+		nilfs_palloc_group_desc_add_entries(inode, group, desc, 1);
 
 	kunmap(req->pr_bitmap_bh->b_page);
 	kunmap(req->pr_desc_bh->b_page);
@@ -665,7 +665,7 @@ int nilfs_palloc_freev(struct inode *inode, __u64 *entry_nrs, size_t nitems)
 		for (j = i, n = 0;
 		     (j < nitems) && nilfs_palloc_group_is_in(inode, group,
 							      entry_nrs[j]);
-		     j++, n++) {
+		     j++) {
 			nilfs_palloc_group(inode, entry_nrs[j], &group_offset);
 			if (!nilfs_clear_bit_atomic(
 				    nilfs_mdt_bgl_lock(inode, group),
@@ -674,6 +674,8 @@ int nilfs_palloc_freev(struct inode *inode, __u64 *entry_nrs, size_t nitems)
 				       "%s: entry number %llu already freed\n",
 				       __func__,
 				       (unsigned long long)entry_nrs[j]);
+			} else {
+				n++;
 			}
 		}
 		nilfs_palloc_group_desc_add_entries(inode, group, desc, n);
diff --git a/fs/nilfs2/alloc.h b/fs/nilfs2/alloc.h
index 9af34a7..f5fde36 100644
--- a/fs/nilfs2/alloc.h
+++ b/fs/nilfs2/alloc.h
@@ -74,7 +74,7 @@ int nilfs_palloc_freev(struct inode *, __u64 *, size_t);
 
 #define nilfs_set_bit_atomic		ext2_set_bit_atomic
 #define nilfs_clear_bit_atomic		ext2_clear_bit_atomic
-#define nilfs_find_next_zero_bit	ext2_find_next_zero_bit
+#define nilfs_find_next_zero_bit	find_next_zero_bit_le
 
 /*
  * persistent object allocator cache
diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c
index 3ee67c6..4723f04 100644
--- a/fs/nilfs2/bmap.c
+++ b/fs/nilfs2/bmap.c
@@ -25,7 +25,6 @@
 #include <linux/errno.h>
 #include "nilfs.h"
 #include "bmap.h"
-#include "sb.h"
 #include "btree.h"
 #include "direct.h"
 #include "btnode.h"
@@ -425,17 +424,6 @@ int nilfs_bmap_test_and_clear_dirty(struct nilfs_bmap *bmap)
 /*
  * Internal use only
  */
-
-void nilfs_bmap_add_blocks(const struct nilfs_bmap *bmap, int n)
-{
-	inode_add_bytes(bmap->b_inode, (1 << bmap->b_inode->i_blkbits) * n);
-}
-
-void nilfs_bmap_sub_blocks(const struct nilfs_bmap *bmap, int n)
-{
-	inode_sub_bytes(bmap->b_inode, (1 << bmap->b_inode->i_blkbits) * n);
-}
-
 __u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *bmap,
 			      const struct buffer_head *bh)
 {
diff --git a/fs/nilfs2/bmap.h b/fs/nilfs2/bmap.h
index bde1c0aa2..40d9f45 100644
--- a/fs/nilfs2/bmap.h
+++ b/fs/nilfs2/bmap.h
@@ -240,9 +240,6 @@ __u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *,
 __u64 nilfs_bmap_find_target_seq(const struct nilfs_bmap *, __u64);
 __u64 nilfs_bmap_find_target_in_group(const struct nilfs_bmap *);
 
-void nilfs_bmap_add_blocks(const struct nilfs_bmap *, int);
-void nilfs_bmap_sub_blocks(const struct nilfs_bmap *, int);
-
 
 /* Assume that bmap semaphore is locked. */
 static inline int nilfs_bmap_dirty(const struct nilfs_bmap *bmap)
diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c
index 85f7baa..609cd22 100644
--- a/fs/nilfs2/btnode.c
+++ b/fs/nilfs2/btnode.c
@@ -34,15 +34,10 @@
 #include "page.h"
 #include "btnode.h"
 
-
-static const struct address_space_operations def_btnode_aops = {
-	.sync_page		= block_sync_page,
-};
-
 void nilfs_btnode_cache_init(struct address_space *btnc,
 			     struct backing_dev_info *bdi)
 {
-	nilfs_mapping_init(btnc, bdi, &def_btnode_aops);
+	nilfs_mapping_init(btnc, bdi);
 }
 
 void nilfs_btnode_cache_clear(struct address_space *btnc)
diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index 300c2bc..d451ae0 100644
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -1174,7 +1174,7 @@ static int nilfs_btree_insert(struct nilfs_bmap *btree, __u64 key, __u64 ptr)
 	if (ret < 0)
 		goto out;
 	nilfs_btree_commit_insert(btree, path, level, key, ptr);
-	nilfs_bmap_add_blocks(btree, stats.bs_nblocks);
+	nilfs_inode_add_blocks(btree->b_inode, stats.bs_nblocks);
 
  out:
 	nilfs_btree_free_path(path);
@@ -1511,7 +1511,7 @@ static int nilfs_btree_delete(struct nilfs_bmap *btree, __u64 key)
 	if (ret < 0)
 		goto out;
 	nilfs_btree_commit_delete(btree, path, level, dat);
-	nilfs_bmap_sub_blocks(btree, stats.bs_nblocks);
+	nilfs_inode_sub_blocks(btree->b_inode, stats.bs_nblocks);
 
 out:
 	nilfs_btree_free_path(path);
@@ -1776,7 +1776,7 @@ int nilfs_btree_convert_and_insert(struct nilfs_bmap *btree,
 		return ret;
 	nilfs_btree_commit_convert_and_insert(btree, key, ptr, keys, ptrs, n,
 					      di, ni, bh);
-	nilfs_bmap_add_blocks(btree, stats.bs_nblocks);
+	nilfs_inode_add_blocks(btree->b_inode, stats.bs_nblocks);
 	return 0;
 }
 
diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c
index 9d45773..3a19239 100644
--- a/fs/nilfs2/dir.c
+++ b/fs/nilfs2/dir.c
@@ -440,7 +440,6 @@ void nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de,
 	nilfs_commit_chunk(page, mapping, from, to);
 	nilfs_put_page(page);
 	dir->i_mtime = dir->i_ctime = CURRENT_TIME;
-/*	NILFS_I(dir)->i_flags &= ~NILFS_BTREE_FL; */
 }
 
 /*
@@ -531,7 +530,6 @@ got_it:
 	nilfs_set_de_type(de, inode);
 	nilfs_commit_chunk(page, page->mapping, from, to);
 	dir->i_mtime = dir->i_ctime = CURRENT_TIME;
-/*	NILFS_I(dir)->i_flags &= ~NILFS_BTREE_FL; */
 	nilfs_mark_inode_dirty(dir);
 	/* OFFSET_CACHE */
 out_put:
@@ -579,7 +577,6 @@ int nilfs_delete_entry(struct nilfs_dir_entry *dir, struct page *page)
 	dir->inode = 0;
 	nilfs_commit_chunk(page, mapping, from, to);
 	inode->i_ctime = inode->i_mtime = CURRENT_TIME;
-/*	NILFS_I(inode)->i_flags &= ~NILFS_BTREE_FL; */
 out:
 	nilfs_put_page(page);
 	return err;
@@ -684,7 +681,7 @@ const struct file_operations nilfs_dir_operations = {
 	.readdir	= nilfs_readdir,
 	.unlocked_ioctl	= nilfs_ioctl,
 #ifdef CONFIG_COMPAT
-	.compat_ioctl	= nilfs_ioctl,
+	.compat_ioctl	= nilfs_compat_ioctl,
 #endif	/* CONFIG_COMPAT */
 	.fsync		= nilfs_sync_file,
 
diff --git a/fs/nilfs2/direct.c b/fs/nilfs2/direct.c
index 324d80c..82f4865 100644
--- a/fs/nilfs2/direct.c
+++ b/fs/nilfs2/direct.c
@@ -146,7 +146,7 @@ static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
 		if (NILFS_BMAP_USE_VBN(bmap))
 			nilfs_bmap_set_target_v(bmap, key, req.bpr_ptr);
 
-		nilfs_bmap_add_blocks(bmap, 1);
+		nilfs_inode_add_blocks(bmap->b_inode, 1);
 	}
 	return ret;
 }
@@ -168,7 +168,7 @@ static int nilfs_direct_delete(struct nilfs_bmap *bmap, __u64 key)
 	if (!ret) {
 		nilfs_bmap_commit_end_ptr(bmap, &req, dat);
 		nilfs_direct_set_ptr(bmap, key, NILFS_BMAP_INVALID_PTR);
-		nilfs_bmap_sub_blocks(bmap, 1);
+		nilfs_inode_sub_blocks(bmap->b_inode, 1);
 	}
 	return ret;
 }
diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
index 2f560c9..93589fc 100644
--- a/fs/nilfs2/file.c
+++ b/fs/nilfs2/file.c
@@ -59,7 +59,7 @@ static int nilfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
 	struct nilfs_transaction_info ti;
 	int ret;
 
-	if (unlikely(nilfs_near_disk_full(NILFS_SB(inode->i_sb)->s_nilfs)))
+	if (unlikely(nilfs_near_disk_full(inode->i_sb->s_fs_info)))
 		return VM_FAULT_SIGBUS; /* -ENOSPC */
 
 	lock_page(page);
@@ -142,7 +142,7 @@ const struct file_operations nilfs_file_operations = {
 	.aio_write	= generic_file_aio_write,
 	.unlocked_ioctl	= nilfs_ioctl,
 #ifdef CONFIG_COMPAT
-	.compat_ioctl	= nilfs_ioctl,
+	.compat_ioctl	= nilfs_compat_ioctl,
 #endif	/* CONFIG_COMPAT */
 	.mmap		= nilfs_file_mmap,
 	.open		= generic_file_open,
diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c
index caf9a6a..1c2a3e2 100644
--- a/fs/nilfs2/gcinode.c
+++ b/fs/nilfs2/gcinode.c
@@ -49,7 +49,6 @@
 #include "ifile.h"
 
 static const struct address_space_operations def_gcinode_aops = {
-	.sync_page		= block_sync_page,
 };
 
 /*
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 2fd440d..c0aa274 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -41,6 +41,24 @@ struct nilfs_iget_args {
 	int for_gc;
 };
 
+void nilfs_inode_add_blocks(struct inode *inode, int n)
+{
+	struct nilfs_root *root = NILFS_I(inode)->i_root;
+
+	inode_add_bytes(inode, (1 << inode->i_blkbits) * n);
+	if (root)
+		atomic_add(n, &root->blocks_count);
+}
+
+void nilfs_inode_sub_blocks(struct inode *inode, int n)
+{
+	struct nilfs_root *root = NILFS_I(inode)->i_root;
+
+	inode_sub_bytes(inode, (1 << inode->i_blkbits) * n);
+	if (root)
+		atomic_sub(n, &root->blocks_count);
+}
+
 /**
  * nilfs_get_block() - get a file block on the filesystem (callback function)
  * @inode - inode struct of the target file
@@ -262,7 +280,6 @@ nilfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
 const struct address_space_operations nilfs_aops = {
 	.writepage		= nilfs_writepage,
 	.readpage		= nilfs_readpage,
-	.sync_page		= block_sync_page,
 	.writepages		= nilfs_writepages,
 	.set_page_dirty		= nilfs_set_page_dirty,
 	.readpages		= nilfs_readpages,
@@ -277,7 +294,7 @@ const struct address_space_operations nilfs_aops = {
 struct inode *nilfs_new_inode(struct inode *dir, int mode)
 {
 	struct super_block *sb = dir->i_sb;
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct inode *inode;
 	struct nilfs_inode_info *ii;
 	struct nilfs_root *root;
@@ -315,19 +332,16 @@ struct inode *nilfs_new_inode(struct inode *dir, int mode)
 		/* No lock is needed; iget() ensures it. */
 	}
 
-	ii->i_flags = NILFS_I(dir)->i_flags;
-	if (S_ISLNK(mode))
-		ii->i_flags &= ~(NILFS_IMMUTABLE_FL | NILFS_APPEND_FL);
-	if (!S_ISDIR(mode))
-		ii->i_flags &= ~NILFS_DIRSYNC_FL;
+	ii->i_flags = nilfs_mask_flags(
+		mode, NILFS_I(dir)->i_flags & NILFS_FL_INHERITED);
 
 	/* ii->i_file_acl = 0; */
 	/* ii->i_dir_acl = 0; */
 	ii->i_dir_start_lookup = 0;
 	nilfs_set_inode_flags(inode);
-	spin_lock(&sbi->s_next_gen_lock);
-	inode->i_generation = sbi->s_next_generation++;
-	spin_unlock(&sbi->s_next_gen_lock);
+	spin_lock(&nilfs->ns_next_gen_lock);
+	inode->i_generation = nilfs->ns_next_generation++;
+	spin_unlock(&nilfs->ns_next_gen_lock);
 	insert_inode_hash(inode);
 
 	err = nilfs_init_acl(inode, dir);
@@ -359,17 +373,15 @@ void nilfs_set_inode_flags(struct inode *inode)
 
 	inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME |
 			    S_DIRSYNC);
-	if (flags & NILFS_SYNC_FL)
+	if (flags & FS_SYNC_FL)
 		inode->i_flags |= S_SYNC;
-	if (flags & NILFS_APPEND_FL)
+	if (flags & FS_APPEND_FL)
 		inode->i_flags |= S_APPEND;
-	if (flags & NILFS_IMMUTABLE_FL)
+	if (flags & FS_IMMUTABLE_FL)
 		inode->i_flags |= S_IMMUTABLE;
-#ifndef NILFS_ATIME_DISABLE
-	if (flags & NILFS_NOATIME_FL)
-#endif
+	if (flags & FS_NOATIME_FL)
 		inode->i_flags |= S_NOATIME;
-	if (flags & NILFS_DIRSYNC_FL)
+	if (flags & FS_DIRSYNC_FL)
 		inode->i_flags |= S_DIRSYNC;
 	mapping_set_gfp_mask(inode->i_mapping,
 			     mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);
@@ -420,7 +432,7 @@ static int __nilfs_read_inode(struct super_block *sb,
 			      struct nilfs_root *root, unsigned long ino,
 			      struct inode *inode)
 {
-	struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct buffer_head *bh;
 	struct nilfs_inode *raw_inode;
 	int err;
@@ -707,6 +719,7 @@ void nilfs_evict_inode(struct inode *inode)
 	struct nilfs_transaction_info ti;
 	struct super_block *sb = inode->i_sb;
 	struct nilfs_inode_info *ii = NILFS_I(inode);
+	int ret;
 
 	if (inode->i_nlink || !ii->i_root || unlikely(is_bad_inode(inode))) {
 		if (inode->i_data.nrpages)
@@ -725,8 +738,9 @@ void nilfs_evict_inode(struct inode *inode)
 	nilfs_mark_inode_dirty(inode);
 	end_writeback(inode);
 
-	nilfs_ifile_delete_inode(ii->i_root->ifile, inode->i_ino);
-	atomic_dec(&ii->i_root->inodes_count);
+	ret = nilfs_ifile_delete_inode(ii->i_root->ifile, inode->i_ino);
+	if (!ret)
+		atomic_dec(&ii->i_root->inodes_count);
 
 	nilfs_clear_inode(inode);
 
@@ -792,18 +806,18 @@ int nilfs_permission(struct inode *inode, int mask, unsigned int flags)
 
 int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
+	struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
 	struct nilfs_inode_info *ii = NILFS_I(inode);
 	int err;
 
-	spin_lock(&sbi->s_inode_lock);
+	spin_lock(&nilfs->ns_inode_lock);
 	if (ii->i_bh == NULL) {
-		spin_unlock(&sbi->s_inode_lock);
+		spin_unlock(&nilfs->ns_inode_lock);
 		err = nilfs_ifile_get_inode_block(ii->i_root->ifile,
 						  inode->i_ino, pbh);
 		if (unlikely(err))
 			return err;
-		spin_lock(&sbi->s_inode_lock);
+		spin_lock(&nilfs->ns_inode_lock);
 		if (ii->i_bh == NULL)
 			ii->i_bh = *pbh;
 		else {
@@ -814,36 +828,36 @@ int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh)
 		*pbh = ii->i_bh;
 
 	get_bh(*pbh);
-	spin_unlock(&sbi->s_inode_lock);
+	spin_unlock(&nilfs->ns_inode_lock);
 	return 0;
 }
 
 int nilfs_inode_dirty(struct inode *inode)
 {
 	struct nilfs_inode_info *ii = NILFS_I(inode);
-	struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
+	struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
 	int ret = 0;
 
 	if (!list_empty(&ii->i_dirty)) {
-		spin_lock(&sbi->s_inode_lock);
+		spin_lock(&nilfs->ns_inode_lock);
 		ret = test_bit(NILFS_I_DIRTY, &ii->i_state) ||
 			test_bit(NILFS_I_BUSY, &ii->i_state);
-		spin_unlock(&sbi->s_inode_lock);
+		spin_unlock(&nilfs->ns_inode_lock);
 	}
 	return ret;
 }
 
 int nilfs_set_file_dirty(struct inode *inode, unsigned nr_dirty)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
 	struct nilfs_inode_info *ii = NILFS_I(inode);
+	struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
 
-	atomic_add(nr_dirty, &sbi->s_nilfs->ns_ndirtyblks);
+	atomic_add(nr_dirty, &nilfs->ns_ndirtyblks);
 
 	if (test_and_set_bit(NILFS_I_DIRTY, &ii->i_state))
 		return 0;
 
-	spin_lock(&sbi->s_inode_lock);
+	spin_lock(&nilfs->ns_inode_lock);
 	if (!test_bit(NILFS_I_QUEUED, &ii->i_state) &&
 	    !test_bit(NILFS_I_BUSY, &ii->i_state)) {
 		/* Because this routine may race with nilfs_dispose_list(),
@@ -851,18 +865,18 @@ int nilfs_set_file_dirty(struct inode *inode, unsigned nr_dirty)
 		if (list_empty(&ii->i_dirty) && igrab(inode) == NULL) {
 			/* This will happen when somebody is freeing
 			   this inode. */
-			nilfs_warning(sbi->s_super, __func__,
+			nilfs_warning(inode->i_sb, __func__,
 				      "cannot get inode (ino=%lu)\n",
 				      inode->i_ino);
-			spin_unlock(&sbi->s_inode_lock);
+			spin_unlock(&nilfs->ns_inode_lock);
 			return -EINVAL; /* NILFS_I_DIRTY may remain for
 					   freeing inode */
 		}
 		list_del(&ii->i_dirty);
-		list_add_tail(&ii->i_dirty, &sbi->s_dirty_files);
+		list_add_tail(&ii->i_dirty, &nilfs->ns_dirty_files);
 		set_bit(NILFS_I_QUEUED, &ii->i_state);
 	}
-	spin_unlock(&sbi->s_inode_lock);
+	spin_unlock(&nilfs->ns_inode_lock);
 	return 0;
 }
 
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index 4967389..f2469ba 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -26,7 +26,9 @@
 #include <linux/capability.h>	/* capable() */
 #include <linux/uaccess.h>	/* copy_from_user(), copy_to_user() */
 #include <linux/vmalloc.h>
+#include <linux/compat.h>	/* compat_ptr() */
 #include <linux/mount.h>	/* mnt_want_write(), mnt_drop_write() */
+#include <linux/buffer_head.h>
 #include <linux/nilfs2_fs.h>
 #include "nilfs.h"
 #include "segment.h"
@@ -97,11 +99,74 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
 	return ret;
 }
 
+static int nilfs_ioctl_getflags(struct inode *inode, void __user *argp)
+{
+	unsigned int flags = NILFS_I(inode)->i_flags & FS_FL_USER_VISIBLE;
+
+	return put_user(flags, (int __user *)argp);
+}
+
+static int nilfs_ioctl_setflags(struct inode *inode, struct file *filp,
+				void __user *argp)
+{
+	struct nilfs_transaction_info ti;
+	unsigned int flags, oldflags;
+	int ret;
+
+	if (!inode_owner_or_capable(inode))
+		return -EACCES;
+
+	if (get_user(flags, (int __user *)argp))
+		return -EFAULT;
+
+	ret = mnt_want_write(filp->f_path.mnt);
+	if (ret)
+		return ret;
+
+	flags = nilfs_mask_flags(inode->i_mode, flags);
+
+	mutex_lock(&inode->i_mutex);
+
+	oldflags = NILFS_I(inode)->i_flags;
+
+	/*
+	 * The IMMUTABLE and APPEND_ONLY flags can only be changed by the
+	 * relevant capability.
+	 */
+	ret = -EPERM;
+	if (((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) &&
+	    !capable(CAP_LINUX_IMMUTABLE))
+		goto out;
+
+	ret = nilfs_transaction_begin(inode->i_sb, &ti, 0);
+	if (ret)
+		goto out;
+
+	NILFS_I(inode)->i_flags = (oldflags & ~FS_FL_USER_MODIFIABLE) |
+		(flags & FS_FL_USER_MODIFIABLE);
+
+	nilfs_set_inode_flags(inode);
+	inode->i_ctime = CURRENT_TIME;
+	if (IS_SYNC(inode))
+		nilfs_set_transaction_flag(NILFS_TI_SYNC);
+
+	nilfs_mark_inode_dirty(inode);
+	ret = nilfs_transaction_commit(inode->i_sb);
+out:
+	mutex_unlock(&inode->i_mutex);
+	mnt_drop_write(filp->f_path.mnt);
+	return ret;
+}
+
+static int nilfs_ioctl_getversion(struct inode *inode, void __user *argp)
+{
+	return put_user(inode->i_generation, (int __user *)argp);
+}
+
 static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
 				     unsigned int cmd, void __user *argp)
 {
-	struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
-	struct inode *cpfile = nilfs->ns_cpfile;
+	struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
 	struct nilfs_transaction_info ti;
 	struct nilfs_cpmode cpmode;
 	int ret;
@@ -121,7 +186,7 @@ static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
 
 	nilfs_transaction_begin(inode->i_sb, &ti, 0);
 	ret = nilfs_cpfile_change_cpmode(
-		cpfile, cpmode.cm_cno, cpmode.cm_mode);
+		nilfs->ns_cpfile, cpmode.cm_cno, cpmode.cm_mode);
 	if (unlikely(ret < 0))
 		nilfs_transaction_abort(inode->i_sb);
 	else
@@ -137,7 +202,7 @@ static int
 nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp,
 			      unsigned int cmd, void __user *argp)
 {
-	struct inode *cpfile = NILFS_SB(inode->i_sb)->s_nilfs->ns_cpfile;
+	struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
 	struct nilfs_transaction_info ti;
 	__u64 cno;
 	int ret;
@@ -154,7 +219,7 @@ nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp,
 		goto out;
 
 	nilfs_transaction_begin(inode->i_sb, &ti, 0);
-	ret = nilfs_cpfile_delete_checkpoint(cpfile, cno);
+	ret = nilfs_cpfile_delete_checkpoint(nilfs->ns_cpfile, cno);
 	if (unlikely(ret < 0))
 		nilfs_transaction_abort(inode->i_sb);
 	else
@@ -180,7 +245,7 @@ nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
 static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp,
 				  unsigned int cmd, void __user *argp)
 {
-	struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+	struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
 	struct nilfs_cpstat cpstat;
 	int ret;
 
@@ -211,7 +276,7 @@ nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
 static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp,
 				  unsigned int cmd, void __user *argp)
 {
-	struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+	struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
 	struct nilfs_sustat sustat;
 	int ret;
 
@@ -267,7 +332,7 @@ nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, __u64 *posp, int flags,
 static int nilfs_ioctl_get_bdescs(struct inode *inode, struct file *filp,
 				  unsigned int cmd, void __user *argp)
 {
-	struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+	struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
 	struct nilfs_argv argv;
 	int ret;
 
@@ -336,7 +401,7 @@ static int nilfs_ioctl_move_blocks(struct super_block *sb,
 				   struct nilfs_argv *argv, void *buf)
 {
 	size_t nmembs = argv->v_nmembs;
-	struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct inode *inode;
 	struct nilfs_vdesc *vdesc;
 	struct buffer_head *bh, *n;
@@ -550,7 +615,7 @@ static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp,
 		ret = PTR_ERR(kbufs[4]);
 		goto out;
 	}
-	nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+	nilfs = inode->i_sb->s_fs_info;
 
 	for (n = 0; n < 4; n++) {
 		ret = -EINVAL;
@@ -623,7 +688,7 @@ static int nilfs_ioctl_sync(struct inode *inode, struct file *filp,
 		return ret;
 
 	if (argp != NULL) {
-		nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+		nilfs = inode->i_sb->s_fs_info;
 		down_read(&nilfs->ns_segctor_sem);
 		cno = nilfs->ns_cno - 1;
 		up_read(&nilfs->ns_segctor_sem);
@@ -641,7 +706,7 @@ static int nilfs_ioctl_get_info(struct inode *inode, struct file *filp,
 						  void *, size_t, size_t))
 
 {
-	struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+	struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
 	struct nilfs_argv argv;
 	int ret;
 
@@ -666,6 +731,12 @@ long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	void __user *argp = (void __user *)arg;
 
 	switch (cmd) {
+	case FS_IOC_GETFLAGS:
+		return nilfs_ioctl_getflags(inode, argp);
+	case FS_IOC_SETFLAGS:
+		return nilfs_ioctl_setflags(inode, filp, argp);
+	case FS_IOC_GETVERSION:
+		return nilfs_ioctl_getversion(inode, argp);
 	case NILFS_IOCTL_CHANGE_CPMODE:
 		return nilfs_ioctl_change_cpmode(inode, filp, cmd, argp);
 	case NILFS_IOCTL_DELETE_CHECKPOINT:
@@ -696,3 +767,23 @@ long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		return -ENOTTY;
 	}
 }
+
+#ifdef CONFIG_COMPAT
+long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+	switch (cmd) {
+	case FS_IOC32_GETFLAGS:
+		cmd = FS_IOC_GETFLAGS;
+		break;
+	case FS_IOC32_SETFLAGS:
+		cmd = FS_IOC_SETFLAGS;
+		break;
+	case FS_IOC32_GETVERSION:
+		cmd = FS_IOC_GETVERSION;
+		break;
+	default:
+		return -ENOIOCTLCMD;
+	}
+	return nilfs_ioctl(filp, cmd, (unsigned long)compat_ptr(arg));
+}
+#endif
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index a0babd2..a649b05 100644
--- a/fs/nilfs2/mdt.c
+++ b/fs/nilfs2/mdt.c
@@ -399,7 +399,6 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc)
 
 static const struct address_space_operations def_mdt_aops = {
 	.writepage		= nilfs_mdt_write_page,
-	.sync_page		= block_sync_page,
 };
 
 static const struct inode_operations def_mdt_iops;
@@ -438,10 +437,6 @@ void nilfs_mdt_set_entry_size(struct inode *inode, unsigned entry_size,
 	mi->mi_first_entry_offset = DIV_ROUND_UP(header_size, entry_size);
 }
 
-static const struct address_space_operations shadow_map_aops = {
-	.sync_page		= block_sync_page,
-};
-
 /**
  * nilfs_mdt_setup_shadow_map - setup shadow map and bind it to metadata file
  * @inode: inode of the metadata file
@@ -455,9 +450,9 @@ int nilfs_mdt_setup_shadow_map(struct inode *inode,
 
 	INIT_LIST_HEAD(&shadow->frozen_buffers);
 	address_space_init_once(&shadow->frozen_data);
-	nilfs_mapping_init(&shadow->frozen_data, bdi, &shadow_map_aops);
+	nilfs_mapping_init(&shadow->frozen_data, bdi);
 	address_space_init_once(&shadow->frozen_btnodes);
-	nilfs_mapping_init(&shadow->frozen_btnodes, bdi, &shadow_map_aops);
+	nilfs_mapping_init(&shadow->frozen_btnodes, bdi);
 	mi->mi_shadow = shadow;
 	return 0;
 }
diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h
index b13734b..ed68563 100644
--- a/fs/nilfs2/mdt.h
+++ b/fs/nilfs2/mdt.h
@@ -66,7 +66,7 @@ static inline struct nilfs_mdt_info *NILFS_MDT(const struct inode *inode)
 
 static inline struct the_nilfs *NILFS_I_NILFS(struct inode *inode)
 {
-	return NILFS_SB(inode->i_sb)->s_nilfs;
+	return inode->i_sb->s_fs_info;
 }
 
 /* Default GFP flags using highmem */
diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
index 161791d..546849b 100644
--- a/fs/nilfs2/namei.c
+++ b/fs/nilfs2/namei.c
@@ -482,7 +482,7 @@ static struct dentry *nilfs_get_dentry(struct super_block *sb, u64 cno,
 	if (ino < NILFS_FIRST_INO(sb) && ino != NILFS_ROOT_INO)
 		return ERR_PTR(-ESTALE);
 
-	root = nilfs_lookup_root(NILFS_SB(sb)->s_nilfs, cno);
+	root = nilfs_lookup_root(sb->s_fs_info, cno);
 	if (!root)
 		return ERR_PTR(-ESTALE);
 
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index 777e8fd..856e8e4 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -30,7 +30,6 @@
 #include <linux/blkdev.h>
 #include <linux/nilfs2_fs.h>
 #include "the_nilfs.h"
-#include "sb.h"
 #include "bmap.h"
 
 /*
@@ -122,7 +121,7 @@ enum {
 #define NILFS_SYS_INO_BITS   \
   ((unsigned int)(1 << NILFS_ROOT_INO) | NILFS_MDT_INO_BITS)
 
-#define NILFS_FIRST_INO(sb)  (NILFS_SB(sb)->s_nilfs->ns_first_ino)
+#define NILFS_FIRST_INO(sb) (((struct the_nilfs *)sb->s_fs_info)->ns_first_ino)
 
 #define NILFS_MDT_INODE(sb, ino) \
   ((ino) < NILFS_FIRST_INO(sb) && (NILFS_MDT_INO_BITS & (1 << (ino))))
@@ -212,6 +211,23 @@ static inline int nilfs_init_acl(struct inode *inode, struct inode *dir)
 
 #define NILFS_ATIME_DISABLE
 
+/* Flags that should be inherited by new inodes from their parent. */
+#define NILFS_FL_INHERITED						\
+	(FS_SECRM_FL | FS_UNRM_FL | FS_COMPR_FL | FS_SYNC_FL |		\
+	 FS_IMMUTABLE_FL | FS_APPEND_FL | FS_NODUMP_FL | FS_NOATIME_FL |\
+	 FS_COMPRBLK_FL | FS_NOCOMP_FL | FS_NOTAIL_FL | FS_DIRSYNC_FL)
+
+/* Mask out flags that are inappropriate for the given type of inode. */
+static inline __u32 nilfs_mask_flags(umode_t mode, __u32 flags)
+{
+	if (S_ISDIR(mode))
+		return flags;
+	else if (S_ISREG(mode))
+		return flags & ~(FS_DIRSYNC_FL | FS_TOPDIR_FL);
+	else
+		return flags & (FS_NODUMP_FL | FS_NOATIME_FL);
+}
+
 /* dir.c */
 extern int nilfs_add_link(struct dentry *, struct inode *);
 extern ino_t nilfs_inode_by_name(struct inode *, const struct qstr *);
@@ -229,10 +245,13 @@ extern int nilfs_sync_file(struct file *, int);
 
 /* ioctl.c */
 long nilfs_ioctl(struct file *, unsigned int, unsigned long);
+long nilfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *, struct nilfs_argv *,
 				       void **);
 
 /* inode.c */
+void nilfs_inode_add_blocks(struct inode *inode, int n);
+void nilfs_inode_sub_blocks(struct inode *inode, int n);
 extern struct inode *nilfs_new_inode(struct inode *, int);
 extern void nilfs_free_inode(struct inode *);
 extern int nilfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
@@ -275,11 +294,11 @@ extern int nilfs_check_feature_compatibility(struct super_block *,
 					     struct nilfs_super_block *);
 extern void nilfs_set_log_cursor(struct nilfs_super_block *,
 				 struct the_nilfs *);
-extern struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *,
-						      int flip);
-extern int nilfs_commit_super(struct nilfs_sb_info *, int);
-extern int nilfs_cleanup_super(struct nilfs_sb_info *);
-int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
+struct nilfs_super_block **nilfs_prepare_super(struct super_block *sb,
+					       int flip);
+int nilfs_commit_super(struct super_block *sb, int flag);
+int nilfs_cleanup_super(struct super_block *sb);
+int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt,
 			    struct nilfs_root **root);
 int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno);
 
diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c
index a585b35..4d2a1ee 100644
--- a/fs/nilfs2/page.c
+++ b/fs/nilfs2/page.c
@@ -493,15 +493,14 @@ unsigned nilfs_page_count_clean_buffers(struct page *page,
 }
 
 void nilfs_mapping_init(struct address_space *mapping,
-			struct backing_dev_info *bdi,
-			const struct address_space_operations *aops)
+			struct backing_dev_info *bdi)
 {
 	mapping->host = NULL;
 	mapping->flags = 0;
 	mapping_set_gfp_mask(mapping, GFP_NOFS);
 	mapping->assoc_mapping = NULL;
 	mapping->backing_dev_info = bdi;
-	mapping->a_ops = aops;
+	mapping->a_ops = NULL;
 }
 
 /*
diff --git a/fs/nilfs2/page.h b/fs/nilfs2/page.h
index 2a00953..f06b79a 100644
--- a/fs/nilfs2/page.h
+++ b/fs/nilfs2/page.h
@@ -62,8 +62,7 @@ int nilfs_copy_dirty_pages(struct address_space *, struct address_space *);
 void nilfs_copy_back_pages(struct address_space *, struct address_space *);
 void nilfs_clear_dirty_pages(struct address_space *);
 void nilfs_mapping_init(struct address_space *mapping,
-			struct backing_dev_info *bdi,
-			const struct address_space_operations *aops);
+			struct backing_dev_info *bdi);
 unsigned nilfs_page_count_clean_buffers(struct page *, unsigned, unsigned);
 unsigned long nilfs_find_uncommitted_extent(struct inode *inode,
 					    sector_t start_blk,
diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c
index 3dfcd3b..ba4a645 100644
--- a/fs/nilfs2/recovery.c
+++ b/fs/nilfs2/recovery.c
@@ -425,7 +425,7 @@ void nilfs_dispose_segment_list(struct list_head *head)
 }
 
 static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs,
-					      struct nilfs_sb_info *sbi,
+					      struct super_block *sb,
 					      struct nilfs_recovery_info *ri)
 {
 	struct list_head *head = &ri->ri_used_segments;
@@ -501,7 +501,7 @@ static int nilfs_recovery_copy_block(struct the_nilfs *nilfs,
 }
 
 static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs,
-				      struct nilfs_sb_info *sbi,
+				      struct super_block *sb,
 				      struct nilfs_root *root,
 				      struct list_head *head,
 				      unsigned long *nr_salvaged_blocks)
@@ -514,7 +514,7 @@ static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs,
 	int err = 0, err2 = 0;
 
 	list_for_each_entry_safe(rb, n, head, list) {
-		inode = nilfs_iget(sbi->s_super, root, rb->ino);
+		inode = nilfs_iget(sb, root, rb->ino);
 		if (IS_ERR(inode)) {
 			err = PTR_ERR(inode);
 			inode = NULL;
@@ -572,11 +572,11 @@ static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs,
  * nilfs_do_roll_forward - salvage logical segments newer than the latest
  * checkpoint
  * @nilfs: nilfs object
- * @sbi: nilfs_sb_info
+ * @sb: super block instance
  * @ri: pointer to a nilfs_recovery_info
  */
 static int nilfs_do_roll_forward(struct the_nilfs *nilfs,
-				 struct nilfs_sb_info *sbi,
+				 struct super_block *sb,
 				 struct nilfs_root *root,
 				 struct nilfs_recovery_info *ri)
 {
@@ -648,7 +648,7 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs,
 				goto failed;
 			if (flags & NILFS_SS_LOGEND) {
 				err = nilfs_recover_dsync_blocks(
-					nilfs, sbi, root, &dsync_blocks,
+					nilfs, sb, root, &dsync_blocks,
 					&nsalvaged_blocks);
 				if (unlikely(err))
 					goto failed;
@@ -681,7 +681,7 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs,
 
 	if (nsalvaged_blocks) {
 		printk(KERN_INFO "NILFS (device %s): salvaged %lu blocks\n",
-		       sbi->s_super->s_id, nsalvaged_blocks);
+		       sb->s_id, nsalvaged_blocks);
 		ri->ri_need_recovery = NILFS_RECOVERY_ROLLFORWARD_DONE;
 	}
  out:
@@ -695,7 +695,7 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs,
 	printk(KERN_ERR
 	       "NILFS (device %s): Error roll-forwarding "
 	       "(err=%d, pseg block=%llu). ",
-	       sbi->s_super->s_id, err, (unsigned long long)pseg_start);
+	       sb->s_id, err, (unsigned long long)pseg_start);
 	goto out;
 }
 
@@ -724,7 +724,7 @@ static void nilfs_finish_roll_forward(struct the_nilfs *nilfs,
 /**
  * nilfs_salvage_orphan_logs - salvage logs written after the latest checkpoint
  * @nilfs: nilfs object
- * @sbi: nilfs_sb_info
+ * @sb: super block instance
  * @ri: pointer to a nilfs_recovery_info struct to store search results.
  *
  * Return Value: On success, 0 is returned.  On error, one of the following
@@ -741,7 +741,7 @@ static void nilfs_finish_roll_forward(struct the_nilfs *nilfs,
  * %-ENOMEM - Insufficient memory available.
  */
 int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs,
-			      struct nilfs_sb_info *sbi,
+			      struct super_block *sb,
 			      struct nilfs_recovery_info *ri)
 {
 	struct nilfs_root *root;
@@ -750,32 +750,32 @@ int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs,
 	if (ri->ri_lsegs_start == 0 || ri->ri_lsegs_end == 0)
 		return 0;
 
-	err = nilfs_attach_checkpoint(sbi, ri->ri_cno, true, &root);
+	err = nilfs_attach_checkpoint(sb, ri->ri_cno, true, &root);
 	if (unlikely(err)) {
 		printk(KERN_ERR
 		       "NILFS: error loading the latest checkpoint.\n");
 		return err;
 	}
 
-	err = nilfs_do_roll_forward(nilfs, sbi, root, ri);
+	err = nilfs_do_roll_forward(nilfs, sb, root, ri);
 	if (unlikely(err))
 		goto failed;
 
 	if (ri->ri_need_recovery == NILFS_RECOVERY_ROLLFORWARD_DONE) {
-		err = nilfs_prepare_segment_for_recovery(nilfs, sbi, ri);
+		err = nilfs_prepare_segment_for_recovery(nilfs, sb, ri);
 		if (unlikely(err)) {
 			printk(KERN_ERR "NILFS: Error preparing segments for "
 			       "recovery.\n");
 			goto failed;
 		}
 
-		err = nilfs_attach_segment_constructor(sbi, root);
+		err = nilfs_attach_log_writer(sb, root);
 		if (unlikely(err))
 			goto failed;
 
 		set_nilfs_discontinued(nilfs);
-		err = nilfs_construct_segment(sbi->s_super);
-		nilfs_detach_segment_constructor(sbi);
+		err = nilfs_construct_segment(sb);
+		nilfs_detach_log_writer(sb);
 
 		if (unlikely(err)) {
 			printk(KERN_ERR "NILFS: Oops! recovery failed. "
diff --git a/fs/nilfs2/sb.h b/fs/nilfs2/sb.h
deleted file mode 100644
index 7a17715..0000000
--- a/fs/nilfs2/sb.h
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * sb.h - NILFS on-memory super block structure.
- *
- * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Written by Ryusuke Konishi <ryusuke@osrg.net>
- *
- */
-
-#ifndef _NILFS_SB
-#define _NILFS_SB
-
-#include <linux/types.h>
-#include <linux/fs.h>
-
-struct the_nilfs;
-struct nilfs_sc_info;
-
-/*
- * NILFS super-block data in memory
- */
-struct nilfs_sb_info {
-	/* Mount options */
-	unsigned long s_mount_opt;
-	uid_t s_resuid;
-	gid_t s_resgid;
-
-	unsigned long s_interval;	/* construction interval */
-	unsigned long s_watermark;	/* threshold of data amount
-					   for the segment construction */
-
-	/* Fundamental members */
-	struct super_block *s_super;	/* reverse pointer to super_block */
-	struct the_nilfs *s_nilfs;
-
-	/* Segment constructor */
-	struct list_head s_dirty_files;	/* dirty files list */
-	struct nilfs_sc_info *s_sc_info; /* segment constructor info */
-	spinlock_t s_inode_lock;	/* Lock for the nilfs inode.
-					   It covers s_dirty_files list */
-
-	/* Inode allocator */
-	spinlock_t s_next_gen_lock;
-	u32 s_next_generation;
-};
-
-static inline struct nilfs_sb_info *NILFS_SB(struct super_block *sb)
-{
-	return sb->s_fs_info;
-}
-
-static inline struct nilfs_sc_info *NILFS_SC(struct nilfs_sb_info *sbi)
-{
-	return sbi->s_sc_info;
-}
-
-/*
- * Bit operations for the mount option
- */
-#define nilfs_clear_opt(sbi, opt)  \
-	do { (sbi)->s_mount_opt &= ~NILFS_MOUNT_##opt; } while (0)
-#define nilfs_set_opt(sbi, opt)  \
-	do { (sbi)->s_mount_opt |= NILFS_MOUNT_##opt; } while (0)
-#define nilfs_test_opt(sbi, opt)   ((sbi)->s_mount_opt & NILFS_MOUNT_##opt)
-#define nilfs_write_opt(sbi, mask, opt)					\
-	do { (sbi)->s_mount_opt =					\
-		(((sbi)->s_mount_opt & ~NILFS_MOUNT_##mask) |		\
-		 NILFS_MOUNT_##opt);					\
-	} while (0)
-
-#endif /* _NILFS_SB */
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
index 0f83e93..2853ff2 100644
--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -509,7 +509,7 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
 		 * Last BIO is always sent through the following
 		 * submission.
 		 */
-		rw |= REQ_SYNC | REQ_UNPLUG;
+		rw |= REQ_SYNC;
 		res = nilfs_segbuf_submit_bio(segbuf, &wi, rw);
 	}
 
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 2de9f63..afe4f21 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -104,8 +104,7 @@ struct nilfs_sc_operations {
 static void nilfs_segctor_start_timer(struct nilfs_sc_info *);
 static void nilfs_segctor_do_flush(struct nilfs_sc_info *, int);
 static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *);
-static void nilfs_dispose_list(struct nilfs_sb_info *, struct list_head *,
-			       int);
+static void nilfs_dispose_list(struct the_nilfs *, struct list_head *, int);
 
 #define nilfs_cnt32_gt(a, b)   \
 	(typecheck(__u32, a) && typecheck(__u32, b) && \
@@ -182,7 +181,6 @@ int nilfs_transaction_begin(struct super_block *sb,
 			    struct nilfs_transaction_info *ti,
 			    int vacancy_check)
 {
-	struct nilfs_sb_info *sbi;
 	struct the_nilfs *nilfs;
 	int ret = nilfs_prepare_segment_lock(ti);
 
@@ -193,8 +191,7 @@ int nilfs_transaction_begin(struct super_block *sb,
 
 	vfs_check_frozen(sb, SB_FREEZE_WRITE);
 
-	sbi = NILFS_SB(sb);
-	nilfs = sbi->s_nilfs;
+	nilfs = sb->s_fs_info;
 	down_read(&nilfs->ns_segctor_sem);
 	if (vacancy_check && nilfs_near_disk_full(nilfs)) {
 		up_read(&nilfs->ns_segctor_sem);
@@ -225,8 +222,7 @@ int nilfs_transaction_begin(struct super_block *sb,
 int nilfs_transaction_commit(struct super_block *sb)
 {
 	struct nilfs_transaction_info *ti = current->journal_info;
-	struct nilfs_sb_info *sbi;
-	struct nilfs_sc_info *sci;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	int err = 0;
 
 	BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC);
@@ -235,16 +231,15 @@ int nilfs_transaction_commit(struct super_block *sb)
 		ti->ti_count--;
 		return 0;
 	}
-	sbi = NILFS_SB(sb);
-	sci = NILFS_SC(sbi);
-	if (sci != NULL) {
+	if (nilfs->ns_writer) {
+		struct nilfs_sc_info *sci = nilfs->ns_writer;
+
 		if (ti->ti_flags & NILFS_TI_COMMIT)
 			nilfs_segctor_start_timer(sci);
-		if (atomic_read(&sbi->s_nilfs->ns_ndirtyblks) >
-		    sci->sc_watermark)
+		if (atomic_read(&nilfs->ns_ndirtyblks) > sci->sc_watermark)
 			nilfs_segctor_do_flush(sci, 0);
 	}
-	up_read(&sbi->s_nilfs->ns_segctor_sem);
+	up_read(&nilfs->ns_segctor_sem);
 	current->journal_info = ti->ti_save;
 
 	if (ti->ti_flags & NILFS_TI_SYNC)
@@ -257,13 +252,14 @@ int nilfs_transaction_commit(struct super_block *sb)
 void nilfs_transaction_abort(struct super_block *sb)
 {
 	struct nilfs_transaction_info *ti = current->journal_info;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 
 	BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC);
 	if (ti->ti_count > 0) {
 		ti->ti_count--;
 		return;
 	}
-	up_read(&NILFS_SB(sb)->s_nilfs->ns_segctor_sem);
+	up_read(&nilfs->ns_segctor_sem);
 
 	current->journal_info = ti->ti_save;
 	if (ti->ti_flags & NILFS_TI_DYNAMIC_ALLOC)
@@ -272,9 +268,8 @@ void nilfs_transaction_abort(struct super_block *sb)
 
 void nilfs_relax_pressure_in_lock(struct super_block *sb)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
-	struct nilfs_sc_info *sci = NILFS_SC(sbi);
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
+	struct nilfs_sc_info *sci = nilfs->ns_writer;
 
 	if (!sci || !sci->sc_flush_request)
 		return;
@@ -294,11 +289,13 @@ void nilfs_relax_pressure_in_lock(struct super_block *sb)
 	downgrade_write(&nilfs->ns_segctor_sem);
 }
 
-static void nilfs_transaction_lock(struct nilfs_sb_info *sbi,
+static void nilfs_transaction_lock(struct super_block *sb,
 				   struct nilfs_transaction_info *ti,
 				   int gcflag)
 {
 	struct nilfs_transaction_info *cur_ti = current->journal_info;
+	struct the_nilfs *nilfs = sb->s_fs_info;
+	struct nilfs_sc_info *sci = nilfs->ns_writer;
 
 	WARN_ON(cur_ti);
 	ti->ti_flags = NILFS_TI_WRITER;
@@ -309,30 +306,31 @@ static void nilfs_transaction_lock(struct nilfs_sb_info *sbi,
 	current->journal_info = ti;
 
 	for (;;) {
-		down_write(&sbi->s_nilfs->ns_segctor_sem);
-		if (!test_bit(NILFS_SC_PRIOR_FLUSH, &NILFS_SC(sbi)->sc_flags))
+		down_write(&nilfs->ns_segctor_sem);
+		if (!test_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags))
 			break;
 
-		nilfs_segctor_do_immediate_flush(NILFS_SC(sbi));
+		nilfs_segctor_do_immediate_flush(sci);
 
-		up_write(&sbi->s_nilfs->ns_segctor_sem);
+		up_write(&nilfs->ns_segctor_sem);
 		yield();
 	}
 	if (gcflag)
 		ti->ti_flags |= NILFS_TI_GC;
 }
 
-static void nilfs_transaction_unlock(struct nilfs_sb_info *sbi)
+static void nilfs_transaction_unlock(struct super_block *sb)
 {
 	struct nilfs_transaction_info *ti = current->journal_info;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 
 	BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC);
 	BUG_ON(ti->ti_count > 0);
 
-	up_write(&sbi->s_nilfs->ns_segctor_sem);
+	up_write(&nilfs->ns_segctor_sem);
 	current->journal_info = ti->ti_save;
 	if (!list_empty(&ti->ti_garbage))
-		nilfs_dispose_list(sbi, &ti->ti_garbage, 0);
+		nilfs_dispose_list(nilfs, &ti->ti_garbage, 0);
 }
 
 static void *nilfs_segctor_map_segsum_entry(struct nilfs_sc_info *sci,
@@ -714,7 +712,7 @@ static void nilfs_lookup_dirty_node_buffers(struct inode *inode,
 	}
 }
 
-static void nilfs_dispose_list(struct nilfs_sb_info *sbi,
+static void nilfs_dispose_list(struct the_nilfs *nilfs,
 			       struct list_head *head, int force)
 {
 	struct nilfs_inode_info *ii, *n;
@@ -722,7 +720,7 @@ static void nilfs_dispose_list(struct nilfs_sb_info *sbi,
 	unsigned nv = 0;
 
 	while (!list_empty(head)) {
-		spin_lock(&sbi->s_inode_lock);
+		spin_lock(&nilfs->ns_inode_lock);
 		list_for_each_entry_safe(ii, n, head, i_dirty) {
 			list_del_init(&ii->i_dirty);
 			if (force) {
@@ -733,14 +731,14 @@ static void nilfs_dispose_list(struct nilfs_sb_info *sbi,
 			} else if (test_bit(NILFS_I_DIRTY, &ii->i_state)) {
 				set_bit(NILFS_I_QUEUED, &ii->i_state);
 				list_add_tail(&ii->i_dirty,
-					      &sbi->s_dirty_files);
+					      &nilfs->ns_dirty_files);
 				continue;
 			}
 			ivec[nv++] = ii;
 			if (nv == SC_N_INODEVEC)
 				break;
 		}
-		spin_unlock(&sbi->s_inode_lock);
+		spin_unlock(&nilfs->ns_inode_lock);
 
 		for (pii = ivec; nv > 0; pii++, nv--)
 			iput(&(*pii)->vfs_inode);
@@ -773,24 +771,23 @@ static int nilfs_segctor_clean(struct nilfs_sc_info *sci)
 
 static int nilfs_segctor_confirm(struct nilfs_sc_info *sci)
 {
-	struct nilfs_sb_info *sbi = sci->sc_sbi;
+	struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
 	int ret = 0;
 
-	if (nilfs_test_metadata_dirty(sbi->s_nilfs, sci->sc_root))
+	if (nilfs_test_metadata_dirty(nilfs, sci->sc_root))
 		set_bit(NILFS_SC_DIRTY, &sci->sc_flags);
 
-	spin_lock(&sbi->s_inode_lock);
-	if (list_empty(&sbi->s_dirty_files) && nilfs_segctor_clean(sci))
+	spin_lock(&nilfs->ns_inode_lock);
+	if (list_empty(&nilfs->ns_dirty_files) && nilfs_segctor_clean(sci))
 		ret++;
 
-	spin_unlock(&sbi->s_inode_lock);
+	spin_unlock(&nilfs->ns_inode_lock);
 	return ret;
 }
 
 static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci)
 {
-	struct nilfs_sb_info *sbi = sci->sc_sbi;
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
 
 	nilfs_mdt_clear_dirty(sci->sc_root->ifile);
 	nilfs_mdt_clear_dirty(nilfs->ns_cpfile);
@@ -800,7 +797,7 @@ static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci)
 
 static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci)
 {
-	struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs;
+	struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
 	struct buffer_head *bh_cp;
 	struct nilfs_checkpoint *raw_cp;
 	int err;
@@ -824,8 +821,7 @@ static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci)
 
 static int nilfs_segctor_fill_in_checkpoint(struct nilfs_sc_info *sci)
 {
-	struct nilfs_sb_info *sbi = sci->sc_sbi;
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
 	struct buffer_head *bh_cp;
 	struct nilfs_checkpoint *raw_cp;
 	int err;
@@ -1049,8 +1045,7 @@ static int nilfs_segctor_scan_file_dsync(struct nilfs_sc_info *sci,
 
 static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode)
 {
-	struct nilfs_sb_info *sbi = sci->sc_sbi;
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
 	struct list_head *head;
 	struct nilfs_inode_info *ii;
 	size_t ndone;
@@ -1859,7 +1854,7 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci)
 {
 	struct nilfs_segment_buffer *segbuf;
 	struct page *bd_page = NULL, *fs_page = NULL;
-	struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs;
+	struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
 	int update_sr = false;
 
 	list_for_each_entry(segbuf, &sci->sc_write_logs, sb_list) {
@@ -1963,30 +1958,30 @@ static int nilfs_segctor_wait(struct nilfs_sc_info *sci)
 	return ret;
 }
 
-static int nilfs_segctor_check_in_files(struct nilfs_sc_info *sci,
-					struct nilfs_sb_info *sbi)
+static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci,
+					     struct the_nilfs *nilfs)
 {
 	struct nilfs_inode_info *ii, *n;
 	struct inode *ifile = sci->sc_root->ifile;
 
-	spin_lock(&sbi->s_inode_lock);
+	spin_lock(&nilfs->ns_inode_lock);
  retry:
-	list_for_each_entry_safe(ii, n, &sbi->s_dirty_files, i_dirty) {
+	list_for_each_entry_safe(ii, n, &nilfs->ns_dirty_files, i_dirty) {
 		if (!ii->i_bh) {
 			struct buffer_head *ibh;
 			int err;
 
-			spin_unlock(&sbi->s_inode_lock);
+			spin_unlock(&nilfs->ns_inode_lock);
 			err = nilfs_ifile_get_inode_block(
 				ifile, ii->vfs_inode.i_ino, &ibh);
 			if (unlikely(err)) {
-				nilfs_warning(sbi->s_super, __func__,
+				nilfs_warning(sci->sc_super, __func__,
 					      "failed to get inode block.\n");
 				return err;
 			}
 			nilfs_mdt_mark_buffer_dirty(ibh);
 			nilfs_mdt_mark_dirty(ifile);
-			spin_lock(&sbi->s_inode_lock);
+			spin_lock(&nilfs->ns_inode_lock);
 			if (likely(!ii->i_bh))
 				ii->i_bh = ibh;
 			else
@@ -1999,18 +1994,18 @@ static int nilfs_segctor_check_in_files(struct nilfs_sc_info *sci,
 		list_del(&ii->i_dirty);
 		list_add_tail(&ii->i_dirty, &sci->sc_dirty_files);
 	}
-	spin_unlock(&sbi->s_inode_lock);
+	spin_unlock(&nilfs->ns_inode_lock);
 
 	return 0;
 }
 
-static void nilfs_segctor_check_out_files(struct nilfs_sc_info *sci,
-					  struct nilfs_sb_info *sbi)
+static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci,
+					     struct the_nilfs *nilfs)
 {
 	struct nilfs_transaction_info *ti = current->journal_info;
 	struct nilfs_inode_info *ii, *n;
 
-	spin_lock(&sbi->s_inode_lock);
+	spin_lock(&nilfs->ns_inode_lock);
 	list_for_each_entry_safe(ii, n, &sci->sc_dirty_files, i_dirty) {
 		if (!test_and_clear_bit(NILFS_I_UPDATED, &ii->i_state) ||
 		    test_bit(NILFS_I_DIRTY, &ii->i_state))
@@ -2022,7 +2017,7 @@ static void nilfs_segctor_check_out_files(struct nilfs_sc_info *sci,
 		list_del(&ii->i_dirty);
 		list_add_tail(&ii->i_dirty, &ti->ti_garbage);
 	}
-	spin_unlock(&sbi->s_inode_lock);
+	spin_unlock(&nilfs->ns_inode_lock);
 }
 
 /*
@@ -2030,15 +2025,14 @@ static void nilfs_segctor_check_out_files(struct nilfs_sc_info *sci,
  */
 static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
 {
-	struct nilfs_sb_info *sbi = sci->sc_sbi;
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
 	struct page *failed_page;
 	int err;
 
 	sci->sc_stage.scnt = NILFS_ST_INIT;
 	sci->sc_cno = nilfs->ns_cno;
 
-	err = nilfs_segctor_check_in_files(sci, sbi);
+	err = nilfs_segctor_collect_dirty_files(sci, nilfs);
 	if (unlikely(err))
 		goto out;
 
@@ -2116,7 +2110,7 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
 	} while (sci->sc_stage.scnt != NILFS_ST_DONE);
 
  out:
-	nilfs_segctor_check_out_files(sci, sbi);
+	nilfs_segctor_drop_written_files(sci, nilfs);
 	return err;
 
  failed_to_write:
@@ -2169,8 +2163,8 @@ static void nilfs_segctor_do_flush(struct nilfs_sc_info *sci, int bn)
  */
 void nilfs_flush_segment(struct super_block *sb, ino_t ino)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
-	struct nilfs_sc_info *sci = NILFS_SC(sbi);
+	struct the_nilfs *nilfs = sb->s_fs_info;
+	struct nilfs_sc_info *sci = nilfs->ns_writer;
 
 	if (!sci || nilfs_doing_construction())
 		return;
@@ -2259,8 +2253,8 @@ static void nilfs_segctor_wakeup(struct nilfs_sc_info *sci, int err)
  */
 int nilfs_construct_segment(struct super_block *sb)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
-	struct nilfs_sc_info *sci = NILFS_SC(sbi);
+	struct the_nilfs *nilfs = sb->s_fs_info;
+	struct nilfs_sc_info *sci = nilfs->ns_writer;
 	struct nilfs_transaction_info *ti;
 	int err;
 
@@ -2297,8 +2291,8 @@ int nilfs_construct_segment(struct super_block *sb)
 int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode,
 				  loff_t start, loff_t end)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
-	struct nilfs_sc_info *sci = NILFS_SC(sbi);
+	struct the_nilfs *nilfs = sb->s_fs_info;
+	struct nilfs_sc_info *sci = nilfs->ns_writer;
 	struct nilfs_inode_info *ii;
 	struct nilfs_transaction_info ti;
 	int err = 0;
@@ -2306,33 +2300,33 @@ int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode,
 	if (!sci)
 		return -EROFS;
 
-	nilfs_transaction_lock(sbi, &ti, 0);
+	nilfs_transaction_lock(sb, &ti, 0);
 
 	ii = NILFS_I(inode);
 	if (test_bit(NILFS_I_INODE_DIRTY, &ii->i_state) ||
-	    nilfs_test_opt(sbi, STRICT_ORDER) ||
+	    nilfs_test_opt(nilfs, STRICT_ORDER) ||
 	    test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) ||
-	    nilfs_discontinued(sbi->s_nilfs)) {
-		nilfs_transaction_unlock(sbi);
+	    nilfs_discontinued(nilfs)) {
+		nilfs_transaction_unlock(sb);
 		err = nilfs_segctor_sync(sci);
 		return err;
 	}
 
-	spin_lock(&sbi->s_inode_lock);
+	spin_lock(&nilfs->ns_inode_lock);
 	if (!test_bit(NILFS_I_QUEUED, &ii->i_state) &&
 	    !test_bit(NILFS_I_BUSY, &ii->i_state)) {
-		spin_unlock(&sbi->s_inode_lock);
-		nilfs_transaction_unlock(sbi);
+		spin_unlock(&nilfs->ns_inode_lock);
+		nilfs_transaction_unlock(sb);
 		return 0;
 	}
-	spin_unlock(&sbi->s_inode_lock);
+	spin_unlock(&nilfs->ns_inode_lock);
 	sci->sc_dsync_inode = ii;
 	sci->sc_dsync_start = start;
 	sci->sc_dsync_end = end;
 
 	err = nilfs_segctor_do_construct(sci, SC_LSEG_DSYNC);
 
-	nilfs_transaction_unlock(sbi);
+	nilfs_transaction_unlock(sb);
 	return err;
 }
 
@@ -2388,8 +2382,7 @@ static void nilfs_segctor_notify(struct nilfs_sc_info *sci, int mode, int err)
  */
 static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode)
 {
-	struct nilfs_sb_info *sbi = sci->sc_sbi;
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
 	struct nilfs_super_block **sbp;
 	int err = 0;
 
@@ -2407,11 +2400,12 @@ static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode)
 		    nilfs_discontinued(nilfs)) {
 			down_write(&nilfs->ns_sem);
 			err = -EIO;
-			sbp = nilfs_prepare_super(sbi,
+			sbp = nilfs_prepare_super(sci->sc_super,
 						  nilfs_sb_will_flip(nilfs));
 			if (likely(sbp)) {
 				nilfs_set_log_cursor(sbp[0], nilfs);
-				err = nilfs_commit_super(sbi, NILFS_SB_COMMIT);
+				err = nilfs_commit_super(sci->sc_super,
+							 NILFS_SB_COMMIT);
 			}
 			up_write(&nilfs->ns_sem);
 		}
@@ -2443,16 +2437,15 @@ nilfs_remove_written_gcinodes(struct the_nilfs *nilfs, struct list_head *head)
 int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv,
 			 void **kbufs)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
-	struct nilfs_sc_info *sci = NILFS_SC(sbi);
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
+	struct nilfs_sc_info *sci = nilfs->ns_writer;
 	struct nilfs_transaction_info ti;
 	int err;
 
 	if (unlikely(!sci))
 		return -EROFS;
 
-	nilfs_transaction_lock(sbi, &ti, 1);
+	nilfs_transaction_lock(sb, &ti, 1);
 
 	err = nilfs_mdt_save_to_shadow_map(nilfs->ns_dat);
 	if (unlikely(err))
@@ -2480,14 +2473,14 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv,
 		set_current_state(TASK_INTERRUPTIBLE);
 		schedule_timeout(sci->sc_interval);
 	}
-	if (nilfs_test_opt(sbi, DISCARD)) {
+	if (nilfs_test_opt(nilfs, DISCARD)) {
 		int ret = nilfs_discard_segments(nilfs, sci->sc_freesegs,
 						 sci->sc_nfreesegs);
 		if (ret) {
 			printk(KERN_WARNING
 			       "NILFS warning: error %d on discard request, "
 			       "turning discards off for the device\n", ret);
-			nilfs_clear_opt(sbi, DISCARD);
+			nilfs_clear_opt(nilfs, DISCARD);
 		}
 	}
 
@@ -2495,16 +2488,15 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv,
 	sci->sc_freesegs = NULL;
 	sci->sc_nfreesegs = 0;
 	nilfs_mdt_clear_shadow_map(nilfs->ns_dat);
-	nilfs_transaction_unlock(sbi);
+	nilfs_transaction_unlock(sb);
 	return err;
 }
 
 static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode)
 {
-	struct nilfs_sb_info *sbi = sci->sc_sbi;
 	struct nilfs_transaction_info ti;
 
-	nilfs_transaction_lock(sbi, &ti, 0);
+	nilfs_transaction_lock(sci->sc_super, &ti, 0);
 	nilfs_segctor_construct(sci, mode);
 
 	/*
@@ -2515,7 +2507,7 @@ static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode)
 	if (test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags))
 		nilfs_segctor_start_timer(sci);
 
-	nilfs_transaction_unlock(sbi);
+	nilfs_transaction_unlock(sci->sc_super);
 }
 
 static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci)
@@ -2561,7 +2553,7 @@ static int nilfs_segctor_flush_mode(struct nilfs_sc_info *sci)
 static int nilfs_segctor_thread(void *arg)
 {
 	struct nilfs_sc_info *sci = (struct nilfs_sc_info *)arg;
-	struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs;
+	struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
 	int timeout = 0;
 
 	sci->sc_timer.data = (unsigned long)current;
@@ -2672,17 +2664,17 @@ static void nilfs_segctor_kill_thread(struct nilfs_sc_info *sci)
 /*
  * Setup & clean-up functions
  */
-static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi,
+static struct nilfs_sc_info *nilfs_segctor_new(struct super_block *sb,
 					       struct nilfs_root *root)
 {
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct nilfs_sc_info *sci;
 
 	sci = kzalloc(sizeof(*sci), GFP_KERNEL);
 	if (!sci)
 		return NULL;
 
-	sci->sc_sbi = sbi;
-	sci->sc_super = sbi->s_super;
+	sci->sc_super = sb;
 
 	nilfs_get_root(root);
 	sci->sc_root = root;
@@ -2702,10 +2694,10 @@ static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi,
 	sci->sc_mjcp_freq = HZ * NILFS_SC_DEFAULT_SR_FREQ;
 	sci->sc_watermark = NILFS_SC_DEFAULT_WATERMARK;
 
-	if (sbi->s_interval)
-		sci->sc_interval = sbi->s_interval;
-	if (sbi->s_watermark)
-		sci->sc_watermark = sbi->s_watermark;
+	if (nilfs->ns_interval)
+		sci->sc_interval = nilfs->ns_interval;
+	if (nilfs->ns_watermark)
+		sci->sc_watermark = nilfs->ns_watermark;
 	return sci;
 }
 
@@ -2716,12 +2708,11 @@ static void nilfs_segctor_write_out(struct nilfs_sc_info *sci)
 	/* The segctord thread was stopped and its timer was removed.
 	   But some tasks remain. */
 	do {
-		struct nilfs_sb_info *sbi = sci->sc_sbi;
 		struct nilfs_transaction_info ti;
 
-		nilfs_transaction_lock(sbi, &ti, 0);
+		nilfs_transaction_lock(sci->sc_super, &ti, 0);
 		ret = nilfs_segctor_construct(sci, SC_LSEG_SR);
-		nilfs_transaction_unlock(sbi);
+		nilfs_transaction_unlock(sci->sc_super);
 
 	} while (ret && retrycount-- > 0);
 }
@@ -2736,10 +2727,10 @@ static void nilfs_segctor_write_out(struct nilfs_sc_info *sci)
  */
 static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
 {
-	struct nilfs_sb_info *sbi = sci->sc_sbi;
+	struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
 	int flag;
 
-	up_write(&sbi->s_nilfs->ns_segctor_sem);
+	up_write(&nilfs->ns_segctor_sem);
 
 	spin_lock(&sci->sc_state_lock);
 	nilfs_segctor_kill_thread(sci);
@@ -2753,9 +2744,9 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
 	WARN_ON(!list_empty(&sci->sc_copied_buffers));
 
 	if (!list_empty(&sci->sc_dirty_files)) {
-		nilfs_warning(sbi->s_super, __func__,
+		nilfs_warning(sci->sc_super, __func__,
 			      "dirty file(s) after the final construction\n");
-		nilfs_dispose_list(sbi, &sci->sc_dirty_files, 1);
+		nilfs_dispose_list(nilfs, &sci->sc_dirty_files, 1);
 	}
 
 	WARN_ON(!list_empty(&sci->sc_segbufs));
@@ -2763,79 +2754,78 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
 
 	nilfs_put_root(sci->sc_root);
 
-	down_write(&sbi->s_nilfs->ns_segctor_sem);
+	down_write(&nilfs->ns_segctor_sem);
 
 	del_timer_sync(&sci->sc_timer);
 	kfree(sci);
 }
 
 /**
- * nilfs_attach_segment_constructor - attach a segment constructor
- * @sbi: nilfs_sb_info
+ * nilfs_attach_log_writer - attach log writer
+ * @sb: super block instance
  * @root: root object of the current filesystem tree
  *
- * nilfs_attach_segment_constructor() allocates a struct nilfs_sc_info,
- * initializes it, and starts the segment constructor.
+ * This allocates a log writer object, initializes it, and starts the
+ * log writer.
  *
  * Return Value: On success, 0 is returned. On error, one of the following
  * negative error code is returned.
  *
  * %-ENOMEM - Insufficient memory available.
  */
-int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi,
-				     struct nilfs_root *root)
+int nilfs_attach_log_writer(struct super_block *sb, struct nilfs_root *root)
 {
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	int err;
 
-	if (NILFS_SC(sbi)) {
+	if (nilfs->ns_writer) {
 		/*
 		 * This happens if the filesystem was remounted
 		 * read/write after nilfs_error degenerated it into a
 		 * read-only mount.
 		 */
-		nilfs_detach_segment_constructor(sbi);
+		nilfs_detach_log_writer(sb);
 	}
 
-	sbi->s_sc_info = nilfs_segctor_new(sbi, root);
-	if (!sbi->s_sc_info)
+	nilfs->ns_writer = nilfs_segctor_new(sb, root);
+	if (!nilfs->ns_writer)
 		return -ENOMEM;
 
-	err = nilfs_segctor_start_thread(NILFS_SC(sbi));
+	err = nilfs_segctor_start_thread(nilfs->ns_writer);
 	if (err) {
-		kfree(sbi->s_sc_info);
-		sbi->s_sc_info = NULL;
+		kfree(nilfs->ns_writer);
+		nilfs->ns_writer = NULL;
 	}
 	return err;
 }
 
 /**
- * nilfs_detach_segment_constructor - destroy the segment constructor
- * @sbi: nilfs_sb_info
+ * nilfs_detach_log_writer - destroy log writer
+ * @sb: super block instance
  *
- * nilfs_detach_segment_constructor() kills the segment constructor daemon,
- * frees the struct nilfs_sc_info, and destroy the dirty file list.
+ * This kills log writer daemon, frees the log writer object, and
+ * destroys list of dirty files.
  */
-void nilfs_detach_segment_constructor(struct nilfs_sb_info *sbi)
+void nilfs_detach_log_writer(struct super_block *sb)
 {
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	LIST_HEAD(garbage_list);
 
 	down_write(&nilfs->ns_segctor_sem);
-	if (NILFS_SC(sbi)) {
-		nilfs_segctor_destroy(NILFS_SC(sbi));
-		sbi->s_sc_info = NULL;
+	if (nilfs->ns_writer) {
+		nilfs_segctor_destroy(nilfs->ns_writer);
+		nilfs->ns_writer = NULL;
 	}
 
 	/* Force to free the list of dirty files */
-	spin_lock(&sbi->s_inode_lock);
-	if (!list_empty(&sbi->s_dirty_files)) {
-		list_splice_init(&sbi->s_dirty_files, &garbage_list);
-		nilfs_warning(sbi->s_super, __func__,
-			      "Non empty dirty list after the last "
-			      "segment construction\n");
-	}
-	spin_unlock(&sbi->s_inode_lock);
+	spin_lock(&nilfs->ns_inode_lock);
+	if (!list_empty(&nilfs->ns_dirty_files)) {
+		list_splice_init(&nilfs->ns_dirty_files, &garbage_list);
+		nilfs_warning(sb, __func__,
+			      "Hit dirty file after stopped log writer\n");
+	}
+	spin_unlock(&nilfs->ns_inode_lock);
 	up_write(&nilfs->ns_segctor_sem);
 
-	nilfs_dispose_list(sbi, &garbage_list, 1);
+	nilfs_dispose_list(nilfs, &garbage_list, 1);
 }
diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h
index cd8056e..6c02a86 100644
--- a/fs/nilfs2/segment.h
+++ b/fs/nilfs2/segment.h
@@ -27,7 +27,7 @@
 #include <linux/fs.h>
 #include <linux/buffer_head.h>
 #include <linux/nilfs2_fs.h>
-#include "sb.h"
+#include "nilfs.h"
 
 struct nilfs_root;
 
@@ -88,7 +88,6 @@ struct nilfs_segsum_pointer {
 /**
  * struct nilfs_sc_info - Segment constructor information
  * @sc_super: Back pointer to super_block struct
- * @sc_sbi: Back pointer to nilfs_sb_info struct
  * @sc_root: root object of the current filesystem tree
  * @sc_nblk_inc: Block count of current generation
  * @sc_dirty_files: List of files to be written
@@ -131,7 +130,6 @@ struct nilfs_segsum_pointer {
  */
 struct nilfs_sc_info {
 	struct super_block     *sc_super;
-	struct nilfs_sb_info   *sc_sbi;
 	struct nilfs_root      *sc_root;
 
 	unsigned long		sc_nblk_inc;
@@ -235,18 +233,16 @@ extern void nilfs_flush_segment(struct super_block *, ino_t);
 extern int nilfs_clean_segments(struct super_block *, struct nilfs_argv *,
 				void **);
 
-int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi,
-				     struct nilfs_root *root);
-extern void nilfs_detach_segment_constructor(struct nilfs_sb_info *);
+int nilfs_attach_log_writer(struct super_block *sb, struct nilfs_root *root);
+void nilfs_detach_log_writer(struct super_block *sb);
 
 /* recovery.c */
 extern int nilfs_read_super_root_block(struct the_nilfs *, sector_t,
 				       struct buffer_head **, int);
 extern int nilfs_search_super_root(struct the_nilfs *,
 				   struct nilfs_recovery_info *);
-extern int nilfs_salvage_orphan_logs(struct the_nilfs *,
-				     struct nilfs_sb_info *,
-				     struct nilfs_recovery_info *);
+int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs, struct super_block *sb,
+			      struct nilfs_recovery_info *ri);
 extern void nilfs_dispose_segment_list(struct list_head *);
 
 #endif /* _NILFS_SEGMENT_H */
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 1673b3d..062cca0 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -43,7 +43,6 @@
 #include <linux/init.h>
 #include <linux/blkdev.h>
 #include <linux/parser.h>
-#include <linux/random.h>
 #include <linux/crc32.h>
 #include <linux/vfs.h>
 #include <linux/writeback.h>
@@ -72,23 +71,23 @@ struct kmem_cache *nilfs_transaction_cachep;
 struct kmem_cache *nilfs_segbuf_cachep;
 struct kmem_cache *nilfs_btree_path_cache;
 
-static int nilfs_setup_super(struct nilfs_sb_info *sbi, int is_mount);
+static int nilfs_setup_super(struct super_block *sb, int is_mount);
 static int nilfs_remount(struct super_block *sb, int *flags, char *data);
 
-static void nilfs_set_error(struct nilfs_sb_info *sbi)
+static void nilfs_set_error(struct super_block *sb)
 {
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct nilfs_super_block **sbp;
 
 	down_write(&nilfs->ns_sem);
 	if (!(nilfs->ns_mount_state & NILFS_ERROR_FS)) {
 		nilfs->ns_mount_state |= NILFS_ERROR_FS;
-		sbp = nilfs_prepare_super(sbi, 0);
+		sbp = nilfs_prepare_super(sb, 0);
 		if (likely(sbp)) {
 			sbp[0]->s_state |= cpu_to_le16(NILFS_ERROR_FS);
 			if (sbp[1])
 				sbp[1]->s_state |= cpu_to_le16(NILFS_ERROR_FS);
-			nilfs_commit_super(sbi, NILFS_SB_COMMIT_ALL);
+			nilfs_commit_super(sb, NILFS_SB_COMMIT_ALL);
 		}
 	}
 	up_write(&nilfs->ns_sem);
@@ -109,7 +108,7 @@ static void nilfs_set_error(struct nilfs_sb_info *sbi)
 void nilfs_error(struct super_block *sb, const char *function,
 		 const char *fmt, ...)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct va_format vaf;
 	va_list args;
 
@@ -124,15 +123,15 @@ void nilfs_error(struct super_block *sb, const char *function,
 	va_end(args);
 
 	if (!(sb->s_flags & MS_RDONLY)) {
-		nilfs_set_error(sbi);
+		nilfs_set_error(sb);
 
-		if (nilfs_test_opt(sbi, ERRORS_RO)) {
+		if (nilfs_test_opt(nilfs, ERRORS_RO)) {
 			printk(KERN_CRIT "Remounting filesystem read-only\n");
 			sb->s_flags |= MS_RDONLY;
 		}
 	}
 
-	if (nilfs_test_opt(sbi, ERRORS_PANIC))
+	if (nilfs_test_opt(nilfs, ERRORS_PANIC))
 		panic("NILFS (device %s): panic forced after error\n",
 		      sb->s_id);
 }
@@ -189,14 +188,14 @@ void nilfs_destroy_inode(struct inode *inode)
 	call_rcu(&inode->i_rcu, nilfs_i_callback);
 }
 
-static int nilfs_sync_super(struct nilfs_sb_info *sbi, int flag)
+static int nilfs_sync_super(struct super_block *sb, int flag)
 {
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	int err;
 
  retry:
 	set_buffer_dirty(nilfs->ns_sbh[0]);
-	if (nilfs_test_opt(sbi, BARRIER)) {
+	if (nilfs_test_opt(nilfs, BARRIER)) {
 		err = __sync_dirty_buffer(nilfs->ns_sbh[0],
 					  WRITE_SYNC | WRITE_FLUSH_FUA);
 	} else {
@@ -263,10 +262,10 @@ void nilfs_set_log_cursor(struct nilfs_super_block *sbp,
 	spin_unlock(&nilfs->ns_last_segment_lock);
 }
 
-struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *sbi,
+struct nilfs_super_block **nilfs_prepare_super(struct super_block *sb,
 					       int flip)
 {
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct nilfs_super_block **sbp = nilfs->ns_sbp;
 
 	/* nilfs->ns_sem must be locked by the caller. */
@@ -276,7 +275,7 @@ struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *sbi,
 			memcpy(sbp[0], sbp[1], nilfs->ns_sbsize);
 		} else {
 			printk(KERN_CRIT "NILFS: superblock broke on dev %s\n",
-			       sbi->s_super->s_id);
+			       sb->s_id);
 			return NULL;
 		}
 	} else if (sbp[1] &&
@@ -290,9 +289,9 @@ struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *sbi,
 	return sbp;
 }
 
-int nilfs_commit_super(struct nilfs_sb_info *sbi, int flag)
+int nilfs_commit_super(struct super_block *sb, int flag)
 {
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct nilfs_super_block **sbp = nilfs->ns_sbp;
 	time_t t;
 
@@ -312,27 +311,28 @@ int nilfs_commit_super(struct nilfs_sb_info *sbi, int flag)
 					    nilfs->ns_sbsize));
 	}
 	clear_nilfs_sb_dirty(nilfs);
-	return nilfs_sync_super(sbi, flag);
+	return nilfs_sync_super(sb, flag);
 }
 
 /**
  * nilfs_cleanup_super() - write filesystem state for cleanup
- * @sbi: nilfs_sb_info to be unmounted or degraded to read-only
+ * @sb: super block instance to be unmounted or degraded to read-only
  *
  * This function restores state flags in the on-disk super block.
  * This will set "clean" flag (i.e. NILFS_VALID_FS) unless the
  * filesystem was not clean previously.
  */
-int nilfs_cleanup_super(struct nilfs_sb_info *sbi)
+int nilfs_cleanup_super(struct super_block *sb)
 {
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct nilfs_super_block **sbp;
 	int flag = NILFS_SB_COMMIT;
 	int ret = -EIO;
 
-	sbp = nilfs_prepare_super(sbi, 0);
+	sbp = nilfs_prepare_super(sb, 0);
 	if (sbp) {
-		sbp[0]->s_state = cpu_to_le16(sbi->s_nilfs->ns_mount_state);
-		nilfs_set_log_cursor(sbp[0], sbi->s_nilfs);
+		sbp[0]->s_state = cpu_to_le16(nilfs->ns_mount_state);
+		nilfs_set_log_cursor(sbp[0], nilfs);
 		if (sbp[1] && sbp[0]->s_last_cno == sbp[1]->s_last_cno) {
 			/*
 			 * make the "clean" flag also to the opposite
@@ -342,21 +342,20 @@ int nilfs_cleanup_super(struct nilfs_sb_info *sbi)
 			sbp[1]->s_state = sbp[0]->s_state;
 			flag = NILFS_SB_COMMIT_ALL;
 		}
-		ret = nilfs_commit_super(sbi, flag);
+		ret = nilfs_commit_super(sb, flag);
 	}
 	return ret;
 }
 
 static void nilfs_put_super(struct super_block *sb)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 
-	nilfs_detach_segment_constructor(sbi);
+	nilfs_detach_log_writer(sb);
 
 	if (!(sb->s_flags & MS_RDONLY)) {
 		down_write(&nilfs->ns_sem);
-		nilfs_cleanup_super(sbi);
+		nilfs_cleanup_super(sb);
 		up_write(&nilfs->ns_sem);
 	}
 
@@ -365,15 +364,12 @@ static void nilfs_put_super(struct super_block *sb)
 	iput(nilfs->ns_dat);
 
 	destroy_nilfs(nilfs);
-	sbi->s_super = NULL;
 	sb->s_fs_info = NULL;
-	kfree(sbi);
 }
 
 static int nilfs_sync_fs(struct super_block *sb, int wait)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct nilfs_super_block **sbp;
 	int err = 0;
 
@@ -383,10 +379,10 @@ static int nilfs_sync_fs(struct super_block *sb, int wait)
 
 	down_write(&nilfs->ns_sem);
 	if (nilfs_sb_dirty(nilfs)) {
-		sbp = nilfs_prepare_super(sbi, nilfs_sb_will_flip(nilfs));
+		sbp = nilfs_prepare_super(sb, nilfs_sb_will_flip(nilfs));
 		if (likely(sbp)) {
 			nilfs_set_log_cursor(sbp[0], nilfs);
-			nilfs_commit_super(sbi, NILFS_SB_COMMIT);
+			nilfs_commit_super(sb, NILFS_SB_COMMIT);
 		}
 	}
 	up_write(&nilfs->ns_sem);
@@ -394,10 +390,10 @@ static int nilfs_sync_fs(struct super_block *sb, int wait)
 	return err;
 }
 
-int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
+int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt,
 			    struct nilfs_root **rootp)
 {
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct nilfs_root *root;
 	struct nilfs_checkpoint *raw_cp;
 	struct buffer_head *bh_cp;
@@ -426,7 +422,7 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
 		goto failed;
 	}
 
-	err = nilfs_ifile_read(sbi->s_super, root, nilfs->ns_inode_size,
+	err = nilfs_ifile_read(sb, root, nilfs->ns_inode_size,
 			       &raw_cp->cp_ifile_inode, &root->ifile);
 	if (err)
 		goto failed_bh;
@@ -450,8 +446,7 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
 
 static int nilfs_freeze(struct super_block *sb)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	int err;
 
 	if (sb->s_flags & MS_RDONLY)
@@ -459,21 +454,20 @@ static int nilfs_freeze(struct super_block *sb)
 
 	/* Mark super block clean */
 	down_write(&nilfs->ns_sem);
-	err = nilfs_cleanup_super(sbi);
+	err = nilfs_cleanup_super(sb);
 	up_write(&nilfs->ns_sem);
 	return err;
 }
 
 static int nilfs_unfreeze(struct super_block *sb)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 
 	if (sb->s_flags & MS_RDONLY)
 		return 0;
 
 	down_write(&nilfs->ns_sem);
-	nilfs_setup_super(sbi, false);
+	nilfs_setup_super(sb, false);
 	up_write(&nilfs->ns_sem);
 	return 0;
 }
@@ -530,22 +524,22 @@ static int nilfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 static int nilfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
 {
 	struct super_block *sb = vfs->mnt_sb;
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct nilfs_root *root = NILFS_I(vfs->mnt_root->d_inode)->i_root;
 
-	if (!nilfs_test_opt(sbi, BARRIER))
+	if (!nilfs_test_opt(nilfs, BARRIER))
 		seq_puts(seq, ",nobarrier");
 	if (root->cno != NILFS_CPTREE_CURRENT_CNO)
 		seq_printf(seq, ",cp=%llu", (unsigned long long)root->cno);
-	if (nilfs_test_opt(sbi, ERRORS_PANIC))
+	if (nilfs_test_opt(nilfs, ERRORS_PANIC))
 		seq_puts(seq, ",errors=panic");
-	if (nilfs_test_opt(sbi, ERRORS_CONT))
+	if (nilfs_test_opt(nilfs, ERRORS_CONT))
 		seq_puts(seq, ",errors=continue");
-	if (nilfs_test_opt(sbi, STRICT_ORDER))
+	if (nilfs_test_opt(nilfs, STRICT_ORDER))
 		seq_puts(seq, ",order=strict");
-	if (nilfs_test_opt(sbi, NORECOVERY))
+	if (nilfs_test_opt(nilfs, NORECOVERY))
 		seq_puts(seq, ",norecovery");
-	if (nilfs_test_opt(sbi, DISCARD))
+	if (nilfs_test_opt(nilfs, DISCARD))
 		seq_puts(seq, ",discard");
 
 	return 0;
@@ -594,7 +588,7 @@ static match_table_t tokens = {
 
 static int parse_options(char *options, struct super_block *sb, int is_remount)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	char *p;
 	substring_t args[MAX_OPT_ARGS];
 
@@ -609,29 +603,29 @@ static int parse_options(char *options, struct super_block *sb, int is_remount)
 		token = match_token(p, tokens, args);
 		switch (token) {
 		case Opt_barrier:
-			nilfs_set_opt(sbi, BARRIER);
+			nilfs_set_opt(nilfs, BARRIER);
 			break;
 		case Opt_nobarrier:
-			nilfs_clear_opt(sbi, BARRIER);
+			nilfs_clear_opt(nilfs, BARRIER);
 			break;
 		case Opt_order:
 			if (strcmp(args[0].from, "relaxed") == 0)
 				/* Ordered data semantics */
-				nilfs_clear_opt(sbi, STRICT_ORDER);
+				nilfs_clear_opt(nilfs, STRICT_ORDER);
 			else if (strcmp(args[0].from, "strict") == 0)
 				/* Strict in-order semantics */
-				nilfs_set_opt(sbi, STRICT_ORDER);
+				nilfs_set_opt(nilfs, STRICT_ORDER);
 			else
 				return 0;
 			break;
 		case Opt_err_panic:
-			nilfs_write_opt(sbi, ERROR_MODE, ERRORS_PANIC);
+			nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_PANIC);
 			break;
 		case Opt_err_ro:
-			nilfs_write_opt(sbi, ERROR_MODE, ERRORS_RO);
+			nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_RO);
 			break;
 		case Opt_err_cont:
-			nilfs_write_opt(sbi, ERROR_MODE, ERRORS_CONT);
+			nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_CONT);
 			break;
 		case Opt_snapshot:
 			if (is_remount) {
@@ -642,13 +636,13 @@ static int parse_options(char *options, struct super_block *sb, int is_remount)
 			}
 			break;
 		case Opt_norecovery:
-			nilfs_set_opt(sbi, NORECOVERY);
+			nilfs_set_opt(nilfs, NORECOVERY);
 			break;
 		case Opt_discard:
-			nilfs_set_opt(sbi, DISCARD);
+			nilfs_set_opt(nilfs, DISCARD);
 			break;
 		case Opt_nodiscard:
-			nilfs_clear_opt(sbi, DISCARD);
+			nilfs_clear_opt(nilfs, DISCARD);
 			break;
 		default:
 			printk(KERN_ERR
@@ -660,22 +654,24 @@ static int parse_options(char *options, struct super_block *sb, int is_remount)
 }
 
 static inline void
-nilfs_set_default_options(struct nilfs_sb_info *sbi,
+nilfs_set_default_options(struct super_block *sb,
 			  struct nilfs_super_block *sbp)
 {
-	sbi->s_mount_opt =
+	struct the_nilfs *nilfs = sb->s_fs_info;
+
+	nilfs->ns_mount_opt =
 		NILFS_MOUNT_ERRORS_RO | NILFS_MOUNT_BARRIER;
 }
 
-static int nilfs_setup_super(struct nilfs_sb_info *sbi, int is_mount)
+static int nilfs_setup_super(struct super_block *sb, int is_mount)
 {
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct nilfs_super_block **sbp;
 	int max_mnt_count;
 	int mnt_count;
 
 	/* nilfs->ns_sem must be locked by the caller. */
-	sbp = nilfs_prepare_super(sbi, 0);
+	sbp = nilfs_prepare_super(sb, 0);
 	if (!sbp)
 		return -EIO;
 
@@ -706,7 +702,7 @@ skip_mount_setup:
 	/* synchronize sbp[1] with sbp[0] */
 	if (sbp[1])
 		memcpy(sbp[1], sbp[0], nilfs->ns_sbsize);
-	return nilfs_commit_super(sbi, NILFS_SB_COMMIT_ALL);
+	return nilfs_commit_super(sb, NILFS_SB_COMMIT_ALL);
 }
 
 struct nilfs_super_block *nilfs_read_super_block(struct super_block *sb,
@@ -727,7 +723,7 @@ int nilfs_store_magic_and_option(struct super_block *sb,
 				 struct nilfs_super_block *sbp,
 				 char *data)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
+	struct the_nilfs *nilfs = sb->s_fs_info;
 
 	sb->s_magic = le16_to_cpu(sbp->s_magic);
 
@@ -736,12 +732,12 @@ int nilfs_store_magic_and_option(struct super_block *sb,
 	sb->s_flags |= MS_NOATIME;
 #endif
 
-	nilfs_set_default_options(sbi, sbp);
+	nilfs_set_default_options(sb, sbp);
 
-	sbi->s_resuid = le16_to_cpu(sbp->s_def_resuid);
-	sbi->s_resgid = le16_to_cpu(sbp->s_def_resgid);
-	sbi->s_interval = le32_to_cpu(sbp->s_c_interval);
-	sbi->s_watermark = le32_to_cpu(sbp->s_c_block_max);
+	nilfs->ns_resuid = le16_to_cpu(sbp->s_def_resuid);
+	nilfs->ns_resgid = le16_to_cpu(sbp->s_def_resgid);
+	nilfs->ns_interval = le32_to_cpu(sbp->s_c_interval);
+	nilfs->ns_watermark = le32_to_cpu(sbp->s_c_block_max);
 
 	return !parse_options(data, sb, 0) ? -EINVAL : 0 ;
 }
@@ -822,7 +818,7 @@ static int nilfs_get_root_dentry(struct super_block *sb,
 static int nilfs_attach_snapshot(struct super_block *s, __u64 cno,
 				 struct dentry **root_dentry)
 {
-	struct the_nilfs *nilfs = NILFS_SB(s)->s_nilfs;
+	struct the_nilfs *nilfs = s->s_fs_info;
 	struct nilfs_root *root;
 	int ret;
 
@@ -840,7 +836,7 @@ static int nilfs_attach_snapshot(struct super_block *s, __u64 cno,
 		goto out;
 	}
 
-	ret = nilfs_attach_checkpoint(NILFS_SB(s), cno, false, &root);
+	ret = nilfs_attach_checkpoint(s, cno, false, &root);
 	if (ret) {
 		printk(KERN_ERR "NILFS: error loading snapshot "
 		       "(checkpoint number=%llu).\n",
@@ -874,7 +870,7 @@ static int nilfs_try_to_shrink_tree(struct dentry *root_dentry)
 
 int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno)
 {
-	struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	struct nilfs_root *root;
 	struct inode *inode;
 	struct dentry *dentry;
@@ -887,7 +883,7 @@ int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno)
 		return true;	/* protect recent checkpoints */
 
 	ret = false;
-	root = nilfs_lookup_root(NILFS_SB(sb)->s_nilfs, cno);
+	root = nilfs_lookup_root(nilfs, cno);
 	if (root) {
 		inode = nilfs_ilookup(sb, root, NILFS_ROOT_INO);
 		if (inode) {
@@ -917,43 +913,21 @@ static int
 nilfs_fill_super(struct super_block *sb, void *data, int silent)
 {
 	struct the_nilfs *nilfs;
-	struct nilfs_sb_info *sbi;
 	struct nilfs_root *fsroot;
 	struct backing_dev_info *bdi;
 	__u64 cno;
 	int err;
 
-	sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
-	if (!sbi)
+	nilfs = alloc_nilfs(sb->s_bdev);
+	if (!nilfs)
 		return -ENOMEM;
 
-	sb->s_fs_info = sbi;
-	sbi->s_super = sb;
-
-	nilfs = alloc_nilfs(sb->s_bdev);
-	if (!nilfs) {
-		err = -ENOMEM;
-		goto failed_sbi;
-	}
-	sbi->s_nilfs = nilfs;
+	sb->s_fs_info = nilfs;
 
-	err = init_nilfs(nilfs, sbi, (char *)data);
+	err = init_nilfs(nilfs, sb, (char *)data);
 	if (err)
 		goto failed_nilfs;
 
-	spin_lock_init(&sbi->s_inode_lock);
-	INIT_LIST_HEAD(&sbi->s_dirty_files);
-
-	/*
-	 * Following initialization is overlapped because
-	 * nilfs_sb_info structure has been cleared at the beginning.
-	 * But we reserve them to keep our interest and make ready
-	 * for the future change.
-	 */
-	get_random_bytes(&sbi->s_next_generation,
-			 sizeof(sbi->s_next_generation));
-	spin_lock_init(&sbi->s_next_gen_lock);
-
 	sb->s_op = &nilfs_sops;
 	sb->s_export_op = &nilfs_export_ops;
 	sb->s_root = NULL;
@@ -962,12 +936,12 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
 	bdi = sb->s_bdev->bd_inode->i_mapping->backing_dev_info;
 	sb->s_bdi = bdi ? : &default_backing_dev_info;
 
-	err = load_nilfs(nilfs, sbi);
+	err = load_nilfs(nilfs, sb);
 	if (err)
 		goto failed_nilfs;
 
 	cno = nilfs_last_cno(nilfs);
-	err = nilfs_attach_checkpoint(sbi, cno, true, &fsroot);
+	err = nilfs_attach_checkpoint(sb, cno, true, &fsroot);
 	if (err) {
 		printk(KERN_ERR "NILFS: error loading last checkpoint "
 		       "(checkpoint number=%llu).\n", (unsigned long long)cno);
@@ -975,7 +949,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
 	}
 
 	if (!(sb->s_flags & MS_RDONLY)) {
-		err = nilfs_attach_segment_constructor(sbi, fsroot);
+		err = nilfs_attach_log_writer(sb, fsroot);
 		if (err)
 			goto failed_checkpoint;
 	}
@@ -988,14 +962,14 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
 
 	if (!(sb->s_flags & MS_RDONLY)) {
 		down_write(&nilfs->ns_sem);
-		nilfs_setup_super(sbi, true);
+		nilfs_setup_super(sb, true);
 		up_write(&nilfs->ns_sem);
 	}
 
 	return 0;
 
  failed_segctor:
-	nilfs_detach_segment_constructor(sbi);
+	nilfs_detach_log_writer(sb);
 
  failed_checkpoint:
 	nilfs_put_root(fsroot);
@@ -1007,23 +981,18 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
 
  failed_nilfs:
 	destroy_nilfs(nilfs);
-
- failed_sbi:
-	sb->s_fs_info = NULL;
-	kfree(sbi);
 	return err;
 }
 
 static int nilfs_remount(struct super_block *sb, int *flags, char *data)
 {
-	struct nilfs_sb_info *sbi = NILFS_SB(sb);
-	struct the_nilfs *nilfs = sbi->s_nilfs;
+	struct the_nilfs *nilfs = sb->s_fs_info;
 	unsigned long old_sb_flags;
 	unsigned long old_mount_opt;
 	int err;
 
 	old_sb_flags = sb->s_flags;
-	old_mount_opt = sbi->s_mount_opt;
+	old_mount_opt = nilfs->ns_mount_opt;
 
 	if (!parse_options(data, sb, 1)) {
 		err = -EINVAL;
@@ -1043,8 +1012,8 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data)
 	if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
 		goto out;
 	if (*flags & MS_RDONLY) {
-		/* Shutting down the segment constructor */
-		nilfs_detach_segment_constructor(sbi);
+		/* Shutting down log writer */
+		nilfs_detach_log_writer(sb);
 		sb->s_flags |= MS_RDONLY;
 
 		/*
@@ -1052,7 +1021,7 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data)
 		 * the RDONLY flag and then mark the partition as valid again.
 		 */
 		down_write(&nilfs->ns_sem);
-		nilfs_cleanup_super(sbi);
+		nilfs_cleanup_super(sb);
 		up_write(&nilfs->ns_sem);
 	} else {
 		__u64 features;
@@ -1079,12 +1048,12 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data)
 		sb->s_flags &= ~MS_RDONLY;
 
 		root = NILFS_I(sb->s_root->d_inode)->i_root;
-		err = nilfs_attach_segment_constructor(sbi, root);
+		err = nilfs_attach_log_writer(sb, root);
 		if (err)
 			goto restore_opts;
 
 		down_write(&nilfs->ns_sem);
-		nilfs_setup_super(sbi, true);
+		nilfs_setup_super(sb, true);
 		up_write(&nilfs->ns_sem);
 	}
  out:
@@ -1092,13 +1061,12 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data)
 
  restore_opts:
 	sb->s_flags = old_sb_flags;
-	sbi->s_mount_opt = old_mount_opt;
+	nilfs->ns_mount_opt = old_mount_opt;
 	return err;
 }
 
 struct nilfs_super_data {
 	struct block_device *bdev;
-	struct nilfs_sb_info *sbi;
 	__u64 cno;
 	int flags;
 };
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index ad4ac60..d2acd1a 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -25,6 +25,7 @@
 #include <linux/slab.h>
 #include <linux/blkdev.h>
 #include <linux/backing-dev.h>
+#include <linux/random.h>
 #include <linux/crc32.h>
 #include "nilfs.h"
 #include "segment.h"
@@ -75,7 +76,10 @@ struct the_nilfs *alloc_nilfs(struct block_device *bdev)
 	nilfs->ns_bdev = bdev;
 	atomic_set(&nilfs->ns_ndirtyblks, 0);
 	init_rwsem(&nilfs->ns_sem);
+	INIT_LIST_HEAD(&nilfs->ns_dirty_files);
 	INIT_LIST_HEAD(&nilfs->ns_gc_inodes);
+	spin_lock_init(&nilfs->ns_inode_lock);
+	spin_lock_init(&nilfs->ns_next_gen_lock);
 	spin_lock_init(&nilfs->ns_last_segment_lock);
 	nilfs->ns_cptree = RB_ROOT;
 	spin_lock_init(&nilfs->ns_cptree_lock);
@@ -197,16 +201,16 @@ static int nilfs_store_log_cursor(struct the_nilfs *nilfs,
 /**
  * load_nilfs - load and recover the nilfs
  * @nilfs: the_nilfs structure to be released
- * @sbi: nilfs_sb_info used to recover past segment
+ * @sb: super block isntance used to recover past segment
  *
  * load_nilfs() searches and load the latest super root,
  * attaches the last segment, and does recovery if needed.
  * The caller must call this exclusively for simultaneous mounts.
  */
-int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
+int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb)
 {
 	struct nilfs_recovery_info ri;
-	unsigned int s_flags = sbi->s_super->s_flags;
+	unsigned int s_flags = sb->s_flags;
 	int really_read_only = bdev_read_only(nilfs->ns_bdev);
 	int valid_fs = nilfs_valid_fs(nilfs);
 	int err;
@@ -271,7 +275,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
 			goto scan_error;
 	}
 
-	err = nilfs_load_super_root(nilfs, sbi->s_super, ri.ri_super_root);
+	err = nilfs_load_super_root(nilfs, sb, ri.ri_super_root);
 	if (unlikely(err)) {
 		printk(KERN_ERR "NILFS: error loading super root.\n");
 		goto failed;
@@ -283,7 +287,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
 	if (s_flags & MS_RDONLY) {
 		__u64 features;
 
-		if (nilfs_test_opt(sbi, NORECOVERY)) {
+		if (nilfs_test_opt(nilfs, NORECOVERY)) {
 			printk(KERN_INFO "NILFS: norecovery option specified. "
 			       "skipping roll-forward recovery\n");
 			goto skip_recovery;
@@ -304,21 +308,21 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
 			err = -EROFS;
 			goto failed_unload;
 		}
-		sbi->s_super->s_flags &= ~MS_RDONLY;
-	} else if (nilfs_test_opt(sbi, NORECOVERY)) {
+		sb->s_flags &= ~MS_RDONLY;
+	} else if (nilfs_test_opt(nilfs, NORECOVERY)) {
 		printk(KERN_ERR "NILFS: recovery cancelled because norecovery "
 		       "option was specified for a read/write mount\n");
 		err = -EINVAL;
 		goto failed_unload;
 	}
 
-	err = nilfs_salvage_orphan_logs(nilfs, sbi, &ri);
+	err = nilfs_salvage_orphan_logs(nilfs, sb, &ri);
 	if (err)
 		goto failed_unload;
 
 	down_write(&nilfs->ns_sem);
 	nilfs->ns_mount_state |= NILFS_VALID_FS; /* set "clean" flag */
-	err = nilfs_cleanup_super(sbi);
+	err = nilfs_cleanup_super(sb);
 	up_write(&nilfs->ns_sem);
 
 	if (err) {
@@ -330,7 +334,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
 
  skip_recovery:
 	nilfs_clear_recovery_info(&ri);
-	sbi->s_super->s_flags = s_flags;
+	sb->s_flags = s_flags;
 	return 0;
 
  scan_error:
@@ -344,7 +348,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
 
  failed:
 	nilfs_clear_recovery_info(&ri);
-	sbi->s_super->s_flags = s_flags;
+	sb->s_flags = s_flags;
 	return err;
 }
 
@@ -475,10 +479,13 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs,
 			return -EIO;
 		}
 		printk(KERN_WARNING
-		       "NILFS warning: unable to read primary superblock\n");
-	} else if (!sbp[1])
+		       "NILFS warning: unable to read primary superblock "
+		       "(blocksize = %d)\n", blocksize);
+	} else if (!sbp[1]) {
 		printk(KERN_WARNING
-		       "NILFS warning: unable to read secondary superblock\n");
+		       "NILFS warning: unable to read secondary superblock "
+		       "(blocksize = %d)\n", blocksize);
+	}
 
 	/*
 	 * Compare two super blocks and set 1 in swp if the secondary
@@ -505,7 +512,7 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs,
 
 	if (!valid[!swp])
 		printk(KERN_WARNING "NILFS warning: broken superblock. "
-		       "using spare superblock.\n");
+		       "using spare superblock (blocksize = %d).\n", blocksize);
 	if (swp)
 		nilfs_swap_super_block(nilfs);
 
@@ -519,7 +526,6 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs,
 /**
  * init_nilfs - initialize a NILFS instance.
  * @nilfs: the_nilfs structure
- * @sbi: nilfs_sb_info
  * @sb: super block
  * @data: mount options
  *
@@ -530,9 +536,8 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs,
  * Return Value: On success, 0 is returned. On error, a negative error
  * code is returned.
  */
-int init_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, char *data)
+int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data)
 {
-	struct super_block *sb = sbi->s_super;
 	struct nilfs_super_block *sbp;
 	int blocksize;
 	int err;
@@ -588,6 +593,9 @@ int init_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, char *data)
 	nilfs->ns_blocksize_bits = sb->s_blocksize_bits;
 	nilfs->ns_blocksize = blocksize;
 
+	get_random_bytes(&nilfs->ns_next_generation,
+			 sizeof(nilfs->ns_next_generation));
+
 	err = nilfs_store_disk_layout(nilfs, sbp);
 	if (err)
 		goto failed_sbh;
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index fd85e4c..f496814 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -31,7 +31,8 @@
 #include <linux/blkdev.h>
 #include <linux/backing-dev.h>
 #include <linux/slab.h>
-#include "sb.h"
+
+struct nilfs_sc_info;
 
 /* the_nilfs struct */
 enum {
@@ -65,13 +66,23 @@ enum {
  * @ns_last_cno: checkpoint number of the latest segment
  * @ns_prot_seq: least sequence number of segments which must not be reclaimed
  * @ns_prev_seq: base sequence number used to decide if advance log cursor
- * @ns_segctor_sem: segment constructor semaphore
+ * @ns_writer: log writer
+ * @ns_segctor_sem: semaphore protecting log write
  * @ns_dat: DAT file inode
  * @ns_cpfile: checkpoint file inode
  * @ns_sufile: segusage file inode
  * @ns_cptree: rb-tree of all mounted checkpoints (nilfs_root)
  * @ns_cptree_lock: lock protecting @ns_cptree
+ * @ns_dirty_files: list of dirty files
+ * @ns_inode_lock: lock protecting @ns_dirty_files
  * @ns_gc_inodes: dummy inodes to keep live blocks
+ * @ns_next_generation: next generation number for inodes
+ * @ns_next_gen_lock: lock protecting @ns_next_generation
+ * @ns_mount_opt: mount options
+ * @ns_resuid: uid for reserved blocks
+ * @ns_resgid: gid for reserved blocks
+ * @ns_interval: checkpoint creation interval
+ * @ns_watermark: watermark for the number of dirty buffers
  * @ns_blocksize_bits: bit length of block size
  * @ns_blocksize: block size
  * @ns_nsegments: number of segments in filesystem
@@ -131,6 +142,7 @@ struct the_nilfs {
 	u64			ns_prot_seq;
 	u64			ns_prev_seq;
 
+	struct nilfs_sc_info   *ns_writer;
 	struct rw_semaphore	ns_segctor_sem;
 
 	/*
@@ -145,9 +157,25 @@ struct the_nilfs {
 	struct rb_root		ns_cptree;
 	spinlock_t		ns_cptree_lock;
 
+	/* Dirty inode list */
+	struct list_head	ns_dirty_files;
+	spinlock_t		ns_inode_lock;
+
 	/* GC inode list */
 	struct list_head	ns_gc_inodes;
 
+	/* Inode allocator */
+	u32			ns_next_generation;
+	spinlock_t		ns_next_gen_lock;
+
+	/* Mount options */
+	unsigned long		ns_mount_opt;
+
+	uid_t			ns_resuid;
+	gid_t			ns_resgid;
+	unsigned long		ns_interval;
+	unsigned long		ns_watermark;
+
 	/* Disk layout information (static) */
 	unsigned int		ns_blocksize_bits;
 	unsigned int		ns_blocksize;
@@ -180,6 +208,20 @@ THE_NILFS_FNS(DISCONTINUED, discontinued)
 THE_NILFS_FNS(GC_RUNNING, gc_running)
 THE_NILFS_FNS(SB_DIRTY, sb_dirty)
 
+/*
+ * Mount option operations
+ */
+#define nilfs_clear_opt(nilfs, opt)  \
+	do { (nilfs)->ns_mount_opt &= ~NILFS_MOUNT_##opt; } while (0)
+#define nilfs_set_opt(nilfs, opt)  \
+	do { (nilfs)->ns_mount_opt |= NILFS_MOUNT_##opt; } while (0)
+#define nilfs_test_opt(nilfs, opt) ((nilfs)->ns_mount_opt & NILFS_MOUNT_##opt)
+#define nilfs_write_opt(nilfs, mask, opt)				\
+	do { (nilfs)->ns_mount_opt =					\
+		(((nilfs)->ns_mount_opt & ~NILFS_MOUNT_##mask) |	\
+		 NILFS_MOUNT_##opt);					\
+	} while (0)
+
 /**
  * struct nilfs_root - nilfs root object
  * @cno: checkpoint number
@@ -224,15 +266,14 @@ static inline int nilfs_sb_will_flip(struct the_nilfs *nilfs)
 void nilfs_set_last_segment(struct the_nilfs *, sector_t, u64, __u64);
 struct the_nilfs *alloc_nilfs(struct block_device *bdev);
 void destroy_nilfs(struct the_nilfs *nilfs);
-int init_nilfs(struct the_nilfs *, struct nilfs_sb_info *, char *);
-int load_nilfs(struct the_nilfs *, struct nilfs_sb_info *);
+int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data);
+int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb);
 int nilfs_discard_segments(struct the_nilfs *, __u64 *, size_t);
 int nilfs_count_free_blocks(struct the_nilfs *, sector_t *);
 struct nilfs_root *nilfs_lookup_root(struct the_nilfs *nilfs, __u64 cno);
 struct nilfs_root *nilfs_find_or_create_root(struct the_nilfs *nilfs,
 					     __u64 cno);
 void nilfs_put_root(struct nilfs_root *root);
-struct nilfs_sb_info *nilfs_find_sbinfo(struct the_nilfs *, int, __u64);
 int nilfs_near_disk_full(struct the_nilfs *);
 void nilfs_fall_back_super_block(struct the_nilfs *);
 void nilfs_swap_super_block(struct the_nilfs *);
diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c
index 4c29fcf..07ea8d3 100644
--- a/fs/notify/inode_mark.c
+++ b/fs/notify/inode_mark.c
@@ -22,13 +22,14 @@
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/spinlock.h>
-#include <linux/writeback.h> /* for inode_lock */
 
 #include <asm/atomic.h>
 
 #include <linux/fsnotify_backend.h>
 #include "fsnotify.h"
 
+#include "../internal.h"
+
 /*
  * Recalculate the mask of events relevant to a given inode locked.
  */
@@ -237,15 +238,14 @@ out:
  * fsnotify_unmount_inodes - an sb is unmounting.  handle any watched inodes.
  * @list: list of inodes being unmounted (sb->s_inodes)
  *
- * Called with inode_lock held, protecting the unmounting super block's list
- * of inodes, and with iprune_mutex held, keeping shrink_icache_memory() at bay.
- * We temporarily drop inode_lock, however, and CAN block.
+ * Called during unmount with no locks held, so needs to be safe against
+ * concurrent modifiers. We temporarily drop inode_sb_list_lock and CAN block.
  */
 void fsnotify_unmount_inodes(struct list_head *list)
 {
 	struct inode *inode, *next_i, *need_iput = NULL;
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode_sb_list_lock);
 	list_for_each_entry_safe(inode, next_i, list, i_sb_list) {
 		struct inode *need_iput_tmp;
 
@@ -254,8 +254,11 @@ void fsnotify_unmount_inodes(struct list_head *list)
 		 * I_WILL_FREE, or I_NEW which is fine because by that point
 		 * the inode cannot have any associated watches.
 		 */
-		if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW))
+		spin_lock(&inode->i_lock);
+		if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) {
+			spin_unlock(&inode->i_lock);
 			continue;
+		}
 
 		/*
 		 * If i_count is zero, the inode cannot have any watches and
@@ -263,8 +266,10 @@ void fsnotify_unmount_inodes(struct list_head *list)
 		 * evict all inodes with zero i_count from icache which is
 		 * unnecessarily violent and may in fact be illegal to do.
 		 */
-		if (!atomic_read(&inode->i_count))
+		if (!atomic_read(&inode->i_count)) {
+			spin_unlock(&inode->i_lock);
 			continue;
+		}
 
 		need_iput_tmp = need_iput;
 		need_iput = NULL;
@@ -274,22 +279,25 @@ void fsnotify_unmount_inodes(struct list_head *list)
 			__iget(inode);
 		else
 			need_iput_tmp = NULL;
+		spin_unlock(&inode->i_lock);
 
 		/* In case the dropping of a reference would nuke next_i. */
 		if ((&next_i->i_sb_list != list) &&
-		    atomic_read(&next_i->i_count) &&
-		    !(next_i->i_state & (I_FREEING | I_WILL_FREE))) {
-			__iget(next_i);
-			need_iput = next_i;
+		    atomic_read(&next_i->i_count)) {
+			spin_lock(&next_i->i_lock);
+			if (!(next_i->i_state & (I_FREEING | I_WILL_FREE))) {
+				__iget(next_i);
+				need_iput = next_i;
+			}
+			spin_unlock(&next_i->i_lock);
 		}
 
 		/*
-		 * We can safely drop inode_lock here because we hold
+		 * We can safely drop inode_sb_list_lock here because we hold
 		 * references on both inode and next_i.  Also no new inodes
-		 * will be added since the umount has begun.  Finally,
-		 * iprune_mutex keeps shrink_icache_memory() away.
+		 * will be added since the umount has begun.
 		 */
-		spin_unlock(&inode_lock);
+		spin_unlock(&inode_sb_list_lock);
 
 		if (need_iput_tmp)
 			iput(need_iput_tmp);
@@ -301,7 +309,7 @@ void fsnotify_unmount_inodes(struct list_head *list)
 
 		iput(inode);
 
-		spin_lock(&inode_lock);
+		spin_lock(&inode_sb_list_lock);
 	}
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode_sb_list_lock);
 }
diff --git a/fs/notify/mark.c b/fs/notify/mark.c
index 325185e..50c0085 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -91,7 +91,6 @@
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/srcu.h>
-#include <linux/writeback.h> /* for inode_lock */
 
 #include <asm/atomic.h>
 
diff --git a/fs/notify/vfsmount_mark.c b/fs/notify/vfsmount_mark.c
index 85eebff..e86577d 100644
--- a/fs/notify/vfsmount_mark.c
+++ b/fs/notify/vfsmount_mark.c
@@ -23,7 +23,6 @@
 #include <linux/mount.h>
 #include <linux/mutex.h>
 #include <linux/spinlock.h>
-#include <linux/writeback.h> /* for inode_lock */
 
 #include <asm/atomic.h>
 
diff --git a/fs/ntfs/Makefile b/fs/ntfs/Makefile
index 4ff028f..30206b2 100644
--- a/fs/ntfs/Makefile
+++ b/fs/ntfs/Makefile
@@ -2,18 +2,13 @@
 
 obj-$(CONFIG_NTFS_FS) += ntfs.o
 
-ntfs-objs := aops.o attrib.o collate.o compress.o debug.o dir.o file.o \
-	     index.o inode.o mft.o mst.o namei.o runlist.o super.o sysctl.o \
-	     unistr.o upcase.o
+ntfs-y := aops.o attrib.o collate.o compress.o debug.o dir.o file.o \
+	  index.o inode.o mft.o mst.o namei.o runlist.o super.o sysctl.o \
+	  unistr.o upcase.o
 
-EXTRA_CFLAGS = -DNTFS_VERSION=\"2.1.30\"
+ntfs-$(CONFIG_NTFS_RW) += bitmap.o lcnalloc.o logfile.o quota.o usnjrnl.o
 
-ifeq ($(CONFIG_NTFS_DEBUG),y)
-EXTRA_CFLAGS += -DDEBUG
-endif
+ccflags-y := -DNTFS_VERSION=\"2.1.30\"
+ccflags-$(CONFIG_NTFS_DEBUG)	+= -DDEBUG
+ccflags-$(CONFIG_NTFS_RW)	+= -DNTFS_RW
 
-ifeq ($(CONFIG_NTFS_RW),y)
-EXTRA_CFLAGS += -DNTFS_RW
-
-ntfs-objs += bitmap.o lcnalloc.o logfile.o quota.o usnjrnl.o
-endif
diff --git a/fs/ntfs/aops.c b/fs/ntfs/aops.c
index c3c2c7a..0b1e885b 100644
--- a/fs/ntfs/aops.c
+++ b/fs/ntfs/aops.c
@@ -1543,8 +1543,6 @@ err_out:
  */
 const struct address_space_operations ntfs_aops = {
 	.readpage	= ntfs_readpage,	/* Fill page with data. */
-	.sync_page	= block_sync_page,	/* Currently, just unplugs the
-						   disk request queue. */
 #ifdef NTFS_RW
 	.writepage	= ntfs_writepage,	/* Write dirty page to disk. */
 #endif /* NTFS_RW */
@@ -1560,8 +1558,6 @@ const struct address_space_operations ntfs_aops = {
  */
 const struct address_space_operations ntfs_mst_aops = {
 	.readpage	= ntfs_readpage,	/* Fill page with data. */
-	.sync_page	= block_sync_page,	/* Currently, just unplugs the
-						   disk request queue. */
 #ifdef NTFS_RW
 	.writepage	= ntfs_writepage,	/* Write dirty page to disk. */
 	.set_page_dirty	= __set_page_dirty_nobuffers,	/* Set the page dirty
diff --git a/fs/ntfs/compress.c b/fs/ntfs/compress.c
index 6551c7c..ef9ed85 100644
--- a/fs/ntfs/compress.c
+++ b/fs/ntfs/compress.c
@@ -698,8 +698,7 @@ lock_retry_remap:
 					"uptodate! Unplugging the disk queue "
 					"and rescheduling.");
 			get_bh(tbh);
-			blk_run_address_space(mapping);
-			schedule();
+			io_schedule();
 			put_bh(tbh);
 			if (unlikely(!buffer_uptodate(tbh)))
 				goto read_err;
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index a627ed8..0b56c6b 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -54,7 +54,7 @@
  *
  * Return 1 if the attributes match and 0 if not.
  *
- * NOTE: This function runs with the inode_lock spin lock held so it is not
+ * NOTE: This function runs with the inode->i_lock spin lock held so it is not
  * allowed to sleep.
  */
 int ntfs_test_inode(struct inode *vi, ntfs_attr *na)
@@ -98,7 +98,7 @@ int ntfs_test_inode(struct inode *vi, ntfs_attr *na)
  *
  * Return 0 on success and -errno on error.
  *
- * NOTE: This function runs with the inode_lock spin lock held so it is not
+ * NOTE: This function runs with the inode->i_lock spin lock held so it is not
  * allowed to sleep. (Hence the GFP_ATOMIC allocation.)
  */
 static int ntfs_init_locked_inode(struct inode *vi, ntfs_attr *na)
diff --git a/fs/ocfs2/Makefile b/fs/ocfs2/Makefile
index 07d9fd8..d8a0313 100644
--- a/fs/ocfs2/Makefile
+++ b/fs/ocfs2/Makefile
@@ -1,6 +1,6 @@
-EXTRA_CFLAGS += -Ifs/ocfs2
+ccflags-y := -Ifs/ocfs2
 
-EXTRA_CFLAGS += -DCATCH_BH_JBD_RACES
+ccflags-y += -DCATCH_BH_JBD_RACES
 
 obj-$(CONFIG_OCFS2_FS) += 	\
 	ocfs2.o			\
diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c
index 704f6b1..e913ad1 100644
--- a/fs/ocfs2/acl.c
+++ b/fs/ocfs2/acl.c
@@ -24,7 +24,6 @@
 #include <linux/slab.h>
 #include <linux/string.h>
 
-#define MLOG_MASK_PREFIX ML_INODE
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -497,7 +496,7 @@ static int ocfs2_xattr_set_acl(struct dentry *dentry, const char *name,
 	if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
 		return -EOPNOTSUPP;
 
-	if (!is_owner_or_cap(inode))
+	if (!inode_owner_or_capable(inode))
 		return -EPERM;
 
 	if (value) {
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index e4984e2..b27a0d8 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -30,7 +30,6 @@
 #include <linux/swap.h>
 #include <linux/quotaops.h>
 
-#define MLOG_MASK_PREFIX ML_DISK_ALLOC
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -50,6 +49,7 @@
 #include "uptodate.h"
 #include "xattr.h"
 #include "refcounttree.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -886,8 +886,7 @@ static int ocfs2_validate_extent_block(struct super_block *sb,
 	struct ocfs2_extent_block *eb =
 		(struct ocfs2_extent_block *)bh->b_data;
 
-	mlog(0, "Validating extent block %llu\n",
-	     (unsigned long long)bh->b_blocknr);
+	trace_ocfs2_validate_extent_block((unsigned long long)bh->b_blocknr);
 
 	BUG_ON(!buffer_uptodate(bh));
 
@@ -965,8 +964,6 @@ int ocfs2_num_free_extents(struct ocfs2_super *osb,
 	struct buffer_head *eb_bh = NULL;
 	u64 last_eb_blk = 0;
 
-	mlog_entry_void();
-
 	el = et->et_root_el;
 	last_eb_blk = ocfs2_et_get_last_eb_blk(et);
 
@@ -987,7 +984,7 @@ int ocfs2_num_free_extents(struct ocfs2_super *osb,
 bail:
 	brelse(eb_bh);
 
-	mlog_exit(retval);
+	trace_ocfs2_num_free_extents(retval);
 	return retval;
 }
 
@@ -1010,8 +1007,6 @@ static int ocfs2_create_new_meta_bhs(handle_t *handle,
 		OCFS2_SB(ocfs2_metadata_cache_get_super(et->et_ci));
 	struct ocfs2_extent_block *eb;
 
-	mlog_entry_void();
-
 	count = 0;
 	while (count < wanted) {
 		status = ocfs2_claim_metadata(handle,
@@ -1074,8 +1069,8 @@ bail:
 			brelse(bhs[i]);
 			bhs[i] = NULL;
 		}
+		mlog_errno(status);
 	}
-	mlog_exit(status);
 	return status;
 }
 
@@ -1173,8 +1168,6 @@ static int ocfs2_add_branch(handle_t *handle,
 	struct ocfs2_extent_list  *el;
 	u32 new_cpos, root_end;
 
-	mlog_entry_void();
-
 	BUG_ON(!last_eb_bh || !*last_eb_bh);
 
 	if (eb_bh) {
@@ -1200,8 +1193,11 @@ static int ocfs2_add_branch(handle_t *handle,
 	 * from new_cpos).
 	 */
 	if (root_end > new_cpos) {
-		mlog(0, "adjust the cluster end from %u to %u\n",
-		     root_end, new_cpos);
+		trace_ocfs2_adjust_rightmost_branch(
+			(unsigned long long)
+			ocfs2_metadata_cache_owner(et->et_ci),
+			root_end, new_cpos);
+
 		status = ocfs2_adjust_rightmost_branch(handle, et);
 		if (status) {
 			mlog_errno(status);
@@ -1332,7 +1328,6 @@ bail:
 		kfree(new_eb_bhs);
 	}
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -1353,8 +1348,6 @@ static int ocfs2_shift_tree_depth(handle_t *handle,
 	struct ocfs2_extent_list  *root_el;
 	struct ocfs2_extent_list  *eb_el;
 
-	mlog_entry_void();
-
 	status = ocfs2_create_new_meta_bhs(handle, et, 1, meta_ac,
 					   &new_eb_bh);
 	if (status < 0) {
@@ -1415,7 +1408,6 @@ static int ocfs2_shift_tree_depth(handle_t *handle,
 bail:
 	brelse(new_eb_bh);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -1446,8 +1438,6 @@ static int ocfs2_find_branch_target(struct ocfs2_extent_tree *et,
 	struct buffer_head *bh = NULL;
 	struct buffer_head *lowest_bh = NULL;
 
-	mlog_entry_void();
-
 	*target_bh = NULL;
 
 	el = et->et_root_el;
@@ -1503,7 +1493,6 @@ static int ocfs2_find_branch_target(struct ocfs2_extent_tree *et,
 bail:
 	brelse(bh);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -1540,7 +1529,10 @@ static int ocfs2_grow_tree(handle_t *handle, struct ocfs2_extent_tree *et,
 	 * another tree level */
 	if (shift) {
 		BUG_ON(bh);
-		mlog(0, "need to shift tree depth (current = %d)\n", depth);
+		trace_ocfs2_grow_tree(
+			(unsigned long long)
+			ocfs2_metadata_cache_owner(et->et_ci),
+			depth);
 
 		/* ocfs2_shift_tree_depth will return us a buffer with
 		 * the new extent block (so we can pass that to
@@ -1570,7 +1562,6 @@ static int ocfs2_grow_tree(handle_t *handle, struct ocfs2_extent_tree *et,
 
 	/* call ocfs2_add_branch to add the final part of the tree with
 	 * the new data. */
-	mlog(0, "add branch. bh = %p\n", bh);
 	ret = ocfs2_add_branch(handle, et, bh, last_eb_bh,
 			       meta_ac);
 	if (ret < 0) {
@@ -1645,8 +1636,9 @@ static void ocfs2_rotate_leaf(struct ocfs2_extent_list *el,
 	}
 	insert_index = i;
 
-	mlog(0, "ins %u: index %d, has_empty %d, next_free %d, count %d\n",
-	     insert_cpos, insert_index, has_empty, next_free, le16_to_cpu(el->l_count));
+	trace_ocfs2_rotate_leaf(insert_cpos, insert_index,
+				has_empty, next_free,
+				le16_to_cpu(el->l_count));
 
 	BUG_ON(insert_index < 0);
 	BUG_ON(insert_index >= le16_to_cpu(el->l_count));
@@ -2059,7 +2051,7 @@ static void ocfs2_complete_edge_insert(handle_t *handle,
 	left_el = path_leaf_el(left_path);
 	right_el = path_leaf_el(right_path);
 	for(i = left_path->p_tree_depth - 1; i > subtree_index; i--) {
-		mlog(0, "Adjust records at index %u\n", i);
+		trace_ocfs2_complete_edge_insert(i);
 
 		/*
 		 * One nice property of knowing that all of these
@@ -2389,7 +2381,9 @@ static int ocfs2_rotate_tree_right(handle_t *handle,
 		goto out;
 	}
 
-	mlog(0, "Insert: %u, first left path cpos: %u\n", insert_cpos, cpos);
+	trace_ocfs2_rotate_tree_right(
+		(unsigned long long)ocfs2_metadata_cache_owner(et->et_ci),
+		insert_cpos, cpos);
 
 	/*
 	 * What we want to do here is:
@@ -2418,8 +2412,10 @@ static int ocfs2_rotate_tree_right(handle_t *handle,
 	 * rotating subtrees.
 	 */
 	while (cpos && insert_cpos <= cpos) {
-		mlog(0, "Rotating a tree: ins. cpos: %u, left path cpos: %u\n",
-		     insert_cpos, cpos);
+		trace_ocfs2_rotate_tree_right(
+			(unsigned long long)
+			ocfs2_metadata_cache_owner(et->et_ci),
+			insert_cpos, cpos);
 
 		ret = ocfs2_find_path(et->et_ci, left_path, cpos);
 		if (ret) {
@@ -2461,10 +2457,10 @@ static int ocfs2_rotate_tree_right(handle_t *handle,
 
 		start = ocfs2_find_subtree_root(et, left_path, right_path);
 
-		mlog(0, "Subtree root at index %d (blk %llu, depth %d)\n",
-		     start,
-		     (unsigned long long) right_path->p_node[start].bh->b_blocknr,
-		     right_path->p_tree_depth);
+		trace_ocfs2_rotate_subtree(start,
+			(unsigned long long)
+			right_path->p_node[start].bh->b_blocknr,
+			right_path->p_tree_depth);
 
 		ret = ocfs2_extend_rotate_transaction(handle, start,
 						      orig_credits, right_path);
@@ -2964,8 +2960,7 @@ static int __ocfs2_rotate_tree_left(handle_t *handle,
 		subtree_root = ocfs2_find_subtree_root(et, left_path,
 						       right_path);
 
-		mlog(0, "Subtree root at index %d (blk %llu, depth %d)\n",
-		     subtree_root,
+		trace_ocfs2_rotate_subtree(subtree_root,
 		     (unsigned long long)
 		     right_path->p_node[subtree_root].bh->b_blocknr,
 		     right_path->p_tree_depth);
@@ -3989,9 +3984,11 @@ static int ocfs2_append_rec_to_path(handle_t *handle,
 			goto out;
 		}
 
-		mlog(0, "Append may need a left path update. cpos: %u, "
-		     "left_cpos: %u\n", le32_to_cpu(insert_rec->e_cpos),
-		     left_cpos);
+		trace_ocfs2_append_rec_to_path(
+			(unsigned long long)
+			ocfs2_metadata_cache_owner(et->et_ci),
+			le32_to_cpu(insert_rec->e_cpos),
+			left_cpos);
 
 		/*
 		 * No need to worry if the append is already in the
@@ -4562,7 +4559,7 @@ static int ocfs2_figure_insert_type(struct ocfs2_extent_tree *et,
 					      ocfs2_et_get_last_eb_blk(et),
 					      &bh);
 		if (ret) {
-			mlog_exit(ret);
+			mlog_errno(ret);
 			goto out;
 		}
 		eb = (struct ocfs2_extent_block *) bh->b_data;
@@ -4678,9 +4675,9 @@ int ocfs2_insert_extent(handle_t *handle,
 	struct ocfs2_insert_type insert = {0, };
 	struct ocfs2_extent_rec rec;
 
-	mlog(0, "add %u clusters at position %u to owner %llu\n",
-	     new_clusters, cpos,
-	     (unsigned long long)ocfs2_metadata_cache_owner(et->et_ci));
+	trace_ocfs2_insert_extent_start(
+		(unsigned long long)ocfs2_metadata_cache_owner(et->et_ci),
+		cpos, new_clusters);
 
 	memset(&rec, 0, sizeof(rec));
 	rec.e_cpos = cpu_to_le32(cpos);
@@ -4700,11 +4697,9 @@ int ocfs2_insert_extent(handle_t *handle,
 		goto bail;
 	}
 
-	mlog(0, "Insert.appending: %u, Insert.Contig: %u, "
-	     "Insert.contig_index: %d, Insert.free_records: %d, "
-	     "Insert.tree_depth: %d\n",
-	     insert.ins_appending, insert.ins_contig, insert.ins_contig_index,
-	     free_records, insert.ins_tree_depth);
+	trace_ocfs2_insert_extent(insert.ins_appending, insert.ins_contig,
+				  insert.ins_contig_index, free_records,
+				  insert.ins_tree_depth);
 
 	if (insert.ins_contig == CONTIG_NONE && free_records == 0) {
 		status = ocfs2_grow_tree(handle, et,
@@ -4726,7 +4721,6 @@ int ocfs2_insert_extent(handle_t *handle,
 bail:
 	brelse(last_eb_bh);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -4746,7 +4740,7 @@ int ocfs2_add_clusters_in_btree(handle_t *handle,
 				struct ocfs2_alloc_context *meta_ac,
 				enum ocfs2_alloc_restarted *reason_ret)
 {
-	int status = 0;
+	int status = 0, err = 0;
 	int free_extents;
 	enum ocfs2_alloc_restarted reason = RESTART_NONE;
 	u32 bit_off, num_bits;
@@ -4773,14 +4767,14 @@ int ocfs2_add_clusters_in_btree(handle_t *handle,
 	 * 2) we are so fragmented, we've needed to add metadata too
 	 *    many times. */
 	if (!free_extents && !meta_ac) {
-		mlog(0, "we haven't reserved any metadata!\n");
+		err = -1;
 		status = -EAGAIN;
 		reason = RESTART_META;
 		goto leave;
 	} else if ((!free_extents)
 		   && (ocfs2_alloc_context_bits_left(meta_ac)
 		       < ocfs2_extend_meta_needed(et->et_root_el))) {
-		mlog(0, "filesystem is really fragmented...\n");
+		err = -2;
 		status = -EAGAIN;
 		reason = RESTART_META;
 		goto leave;
@@ -4805,9 +4799,9 @@ int ocfs2_add_clusters_in_btree(handle_t *handle,
 	}
 
 	block = ocfs2_clusters_to_blocks(osb->sb, bit_off);
-	mlog(0, "Allocating %u clusters at block %u for owner %llu\n",
-	     num_bits, bit_off,
-	     (unsigned long long)ocfs2_metadata_cache_owner(et->et_ci));
+	trace_ocfs2_add_clusters_in_btree(
+	     (unsigned long long)ocfs2_metadata_cache_owner(et->et_ci),
+	     bit_off, num_bits);
 	status = ocfs2_insert_extent(handle, et, *logical_offset, block,
 				     num_bits, flags, meta_ac);
 	if (status < 0) {
@@ -4821,16 +4815,15 @@ int ocfs2_add_clusters_in_btree(handle_t *handle,
 	*logical_offset += num_bits;
 
 	if (clusters_to_add) {
-		mlog(0, "need to alloc once more, wanted = %u\n",
-		     clusters_to_add);
+		err = clusters_to_add;
 		status = -EAGAIN;
 		reason = RESTART_TRANS;
 	}
 
 leave:
-	mlog_exit(status);
 	if (reason_ret)
 		*reason_ret = reason;
+	trace_ocfs2_add_clusters_in_btree_ret(status, reason, err);
 	return status;
 }
 
@@ -5039,7 +5032,7 @@ int ocfs2_split_extent(handle_t *handle,
 					      ocfs2_et_get_last_eb_blk(et),
 					      &last_eb_bh);
 		if (ret) {
-			mlog_exit(ret);
+			mlog_errno(ret);
 			goto out;
 		}
 
@@ -5056,9 +5049,9 @@ int ocfs2_split_extent(handle_t *handle,
 
 	ctxt.c_has_empty_extent = ocfs2_is_empty_extent(&el->l_recs[0]);
 
-	mlog(0, "index: %d, contig: %u, has_empty: %u, split_covers: %u\n",
-	     split_index, ctxt.c_contig_type, ctxt.c_has_empty_extent,
-	     ctxt.c_split_covers_rec);
+	trace_ocfs2_split_extent(split_index, ctxt.c_contig_type,
+				 ctxt.c_has_empty_extent,
+				 ctxt.c_split_covers_rec);
 
 	if (ctxt.c_contig_type == CONTIG_NONE) {
 		if (ctxt.c_split_covers_rec)
@@ -5192,8 +5185,9 @@ int ocfs2_mark_extent_written(struct inode *inode,
 {
 	int ret;
 
-	mlog(0, "Inode %lu cpos %u, len %u, phys clusters %u\n",
-	     inode->i_ino, cpos, len, phys);
+	trace_ocfs2_mark_extent_written(
+		(unsigned long long)OCFS2_I(inode)->ip_blkno,
+		cpos, len, phys);
 
 	if (!ocfs2_writes_unwritten_extents(OCFS2_SB(inode->i_sb))) {
 		ocfs2_error(inode->i_sb, "Inode %llu has unwritten extents "
@@ -5512,11 +5506,10 @@ int ocfs2_remove_extent(handle_t *handle,
 
 	BUG_ON(cpos < le32_to_cpu(rec->e_cpos) || trunc_range > rec_range);
 
-	mlog(0, "Owner %llu, remove (cpos %u, len %u). Existing index %d "
-	     "(cpos %u, len %u)\n",
-	     (unsigned long long)ocfs2_metadata_cache_owner(et->et_ci),
-	     cpos, len, index,
-	     le32_to_cpu(rec->e_cpos), ocfs2_rec_clusters(el, rec));
+	trace_ocfs2_remove_extent(
+		(unsigned long long)ocfs2_metadata_cache_owner(et->et_ci),
+		cpos, len, index, le32_to_cpu(rec->e_cpos),
+		ocfs2_rec_clusters(el, rec));
 
 	if (le32_to_cpu(rec->e_cpos) == cpos || rec_range == trunc_range) {
 		ret = ocfs2_truncate_rec(handle, et, path, index, dealloc,
@@ -5795,9 +5788,6 @@ int ocfs2_truncate_log_append(struct ocfs2_super *osb,
 	struct ocfs2_dinode *di;
 	struct ocfs2_truncate_log *tl;
 
-	mlog_entry("start_blk = %llu, num_clusters = %u\n",
-		   (unsigned long long)start_blk, num_clusters);
-
 	BUG_ON(mutex_trylock(&tl_inode->i_mutex));
 
 	start_cluster = ocfs2_blocks_to_clusters(osb->sb, start_blk);
@@ -5834,10 +5824,9 @@ int ocfs2_truncate_log_append(struct ocfs2_super *osb,
 		goto bail;
 	}
 
-	mlog(0, "Log truncate of %u clusters starting at cluster %u to "
-	     "%llu (index = %d)\n", num_clusters, start_cluster,
-	     (unsigned long long)OCFS2_I(tl_inode)->ip_blkno, index);
-
+	trace_ocfs2_truncate_log_append(
+		(unsigned long long)OCFS2_I(tl_inode)->ip_blkno, index,
+		start_cluster, num_clusters);
 	if (ocfs2_truncate_log_can_coalesce(tl, start_cluster)) {
 		/*
 		 * Move index back to the record we are coalescing with.
@@ -5846,9 +5835,10 @@ int ocfs2_truncate_log_append(struct ocfs2_super *osb,
 		index--;
 
 		num_clusters += le32_to_cpu(tl->tl_recs[index].t_clusters);
-		mlog(0, "Coalesce with index %u (start = %u, clusters = %u)\n",
-		     index, le32_to_cpu(tl->tl_recs[index].t_start),
-		     num_clusters);
+		trace_ocfs2_truncate_log_append(
+			(unsigned long long)OCFS2_I(tl_inode)->ip_blkno,
+			index, le32_to_cpu(tl->tl_recs[index].t_start),
+			num_clusters);
 	} else {
 		tl->tl_recs[index].t_start = cpu_to_le32(start_cluster);
 		tl->tl_used = cpu_to_le16(index + 1);
@@ -5859,7 +5849,6 @@ int ocfs2_truncate_log_append(struct ocfs2_super *osb,
 
 	osb->truncated_clusters += num_clusters;
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -5878,8 +5867,6 @@ static int ocfs2_replay_truncate_records(struct ocfs2_super *osb,
 	struct inode *tl_inode = osb->osb_tl_inode;
 	struct buffer_head *tl_bh = osb->osb_tl_bh;
 
-	mlog_entry_void();
-
 	di = (struct ocfs2_dinode *) tl_bh->b_data;
 	tl = &di->id2.i_dealloc;
 	i = le16_to_cpu(tl->tl_used) - 1;
@@ -5915,8 +5902,9 @@ static int ocfs2_replay_truncate_records(struct ocfs2_super *osb,
 		/* if start_blk is not set, we ignore the record as
 		 * invalid. */
 		if (start_blk) {
-			mlog(0, "free record %d, start = %u, clusters = %u\n",
-			     i, le32_to_cpu(rec.t_start), num_clusters);
+			trace_ocfs2_replay_truncate_records(
+				(unsigned long long)OCFS2_I(tl_inode)->ip_blkno,
+				i, le32_to_cpu(rec.t_start), num_clusters);
 
 			status = ocfs2_free_clusters(handle, data_alloc_inode,
 						     data_alloc_bh, start_blk,
@@ -5932,7 +5920,6 @@ static int ocfs2_replay_truncate_records(struct ocfs2_super *osb,
 	osb->truncated_clusters = 0;
 
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -5949,8 +5936,6 @@ int __ocfs2_flush_truncate_log(struct ocfs2_super *osb)
 	struct ocfs2_dinode *di;
 	struct ocfs2_truncate_log *tl;
 
-	mlog_entry_void();
-
 	BUG_ON(mutex_trylock(&tl_inode->i_mutex));
 
 	di = (struct ocfs2_dinode *) tl_bh->b_data;
@@ -5962,8 +5947,9 @@ int __ocfs2_flush_truncate_log(struct ocfs2_super *osb)
 
 	tl = &di->id2.i_dealloc;
 	num_to_flush = le16_to_cpu(tl->tl_used);
-	mlog(0, "Flush %u records from truncate log #%llu\n",
-	     num_to_flush, (unsigned long long)OCFS2_I(tl_inode)->ip_blkno);
+	trace_ocfs2_flush_truncate_log(
+		(unsigned long long)OCFS2_I(tl_inode)->ip_blkno,
+		num_to_flush);
 	if (!num_to_flush) {
 		status = 0;
 		goto out;
@@ -6009,7 +5995,6 @@ out_mutex:
 	iput(data_alloc_inode);
 
 out:
-	mlog_exit(status);
 	return status;
 }
 
@@ -6032,15 +6017,11 @@ static void ocfs2_truncate_log_worker(struct work_struct *work)
 		container_of(work, struct ocfs2_super,
 			     osb_truncate_log_wq.work);
 
-	mlog_entry_void();
-
 	status = ocfs2_flush_truncate_log(osb);
 	if (status < 0)
 		mlog_errno(status);
 	else
 		ocfs2_init_steal_slots(osb);
-
-	mlog_exit(status);
 }
 
 #define OCFS2_TRUNCATE_LOG_FLUSH_INTERVAL (2 * HZ)
@@ -6086,7 +6067,6 @@ static int ocfs2_get_truncate_log_info(struct ocfs2_super *osb,
 	*tl_inode = inode;
 	*tl_bh    = bh;
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -6106,7 +6086,7 @@ int ocfs2_begin_truncate_log_recovery(struct ocfs2_super *osb,
 
 	*tl_copy = NULL;
 
-	mlog(0, "recover truncate log from slot %d\n", slot_num);
+	trace_ocfs2_begin_truncate_log_recovery(slot_num);
 
 	status = ocfs2_get_truncate_log_info(osb, slot_num, &tl_inode, &tl_bh);
 	if (status < 0) {
@@ -6123,8 +6103,7 @@ int ocfs2_begin_truncate_log_recovery(struct ocfs2_super *osb,
 
 	tl = &di->id2.i_dealloc;
 	if (le16_to_cpu(tl->tl_used)) {
-		mlog(0, "We'll have %u logs to recover\n",
-		     le16_to_cpu(tl->tl_used));
+		trace_ocfs2_truncate_log_recovery_num(le16_to_cpu(tl->tl_used));
 
 		*tl_copy = kmalloc(tl_bh->b_size, GFP_KERNEL);
 		if (!(*tl_copy)) {
@@ -6157,9 +6136,9 @@ bail:
 	if (status < 0 && (*tl_copy)) {
 		kfree(*tl_copy);
 		*tl_copy = NULL;
+		mlog_errno(status);
 	}
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -6174,8 +6153,6 @@ int ocfs2_complete_truncate_log_recovery(struct ocfs2_super *osb,
 	struct inode *tl_inode = osb->osb_tl_inode;
 	struct ocfs2_truncate_log *tl;
 
-	mlog_entry_void();
-
 	if (OCFS2_I(tl_inode)->ip_blkno == le64_to_cpu(tl_copy->i_blkno)) {
 		mlog(ML_ERROR, "Asked to recover my own truncate log!\n");
 		return -EINVAL;
@@ -6183,8 +6160,9 @@ int ocfs2_complete_truncate_log_recovery(struct ocfs2_super *osb,
 
 	tl = &tl_copy->id2.i_dealloc;
 	num_recs = le16_to_cpu(tl->tl_used);
-	mlog(0, "cleanup %u records from %llu\n", num_recs,
-	     (unsigned long long)le64_to_cpu(tl_copy->i_blkno));
+	trace_ocfs2_complete_truncate_log_recovery(
+		(unsigned long long)le64_to_cpu(tl_copy->i_blkno),
+		num_recs);
 
 	mutex_lock(&tl_inode->i_mutex);
 	for(i = 0; i < num_recs; i++) {
@@ -6219,7 +6197,6 @@ int ocfs2_complete_truncate_log_recovery(struct ocfs2_super *osb,
 bail_up:
 	mutex_unlock(&tl_inode->i_mutex);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -6228,8 +6205,6 @@ void ocfs2_truncate_log_shutdown(struct ocfs2_super *osb)
 	int status;
 	struct inode *tl_inode = osb->osb_tl_inode;
 
-	mlog_entry_void();
-
 	if (tl_inode) {
 		cancel_delayed_work(&osb->osb_truncate_log_wq);
 		flush_workqueue(ocfs2_wq);
@@ -6241,8 +6216,6 @@ void ocfs2_truncate_log_shutdown(struct ocfs2_super *osb)
 		brelse(osb->osb_tl_bh);
 		iput(osb->osb_tl_inode);
 	}
-
-	mlog_exit_void();
 }
 
 int ocfs2_truncate_log_init(struct ocfs2_super *osb)
@@ -6251,8 +6224,6 @@ int ocfs2_truncate_log_init(struct ocfs2_super *osb)
 	struct inode *tl_inode = NULL;
 	struct buffer_head *tl_bh = NULL;
 
-	mlog_entry_void();
-
 	status = ocfs2_get_truncate_log_info(osb,
 					     osb->slot_num,
 					     &tl_inode,
@@ -6268,7 +6239,6 @@ int ocfs2_truncate_log_init(struct ocfs2_super *osb)
 	osb->osb_tl_bh    = tl_bh;
 	osb->osb_tl_inode = tl_inode;
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -6350,8 +6320,8 @@ static int ocfs2_free_cached_blocks(struct ocfs2_super *osb,
 		else
 			bg_blkno = ocfs2_which_suballoc_group(head->free_blk,
 							      head->free_bit);
-		mlog(0, "Free bit: (bit %u, blkno %llu)\n",
-		     head->free_bit, (unsigned long long)head->free_blk);
+		trace_ocfs2_free_cached_blocks(
+		     (unsigned long long)head->free_blk, head->free_bit);
 
 		ret = ocfs2_free_suballoc_bits(handle, inode, di_bh,
 					       head->free_bit, bg_blkno, 1);
@@ -6404,8 +6374,7 @@ int ocfs2_cache_cluster_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
 		return ret;
 	}
 
-	mlog(0, "Insert clusters: (bit %u, blk %llu)\n",
-	     bit, (unsigned long long)blkno);
+	trace_ocfs2_cache_cluster_dealloc((unsigned long long)blkno, bit);
 
 	item->free_blk = blkno;
 	item->free_bit = bit;
@@ -6480,8 +6449,8 @@ int ocfs2_run_deallocs(struct ocfs2_super *osb,
 		fl = ctxt->c_first_suballocator;
 
 		if (fl->f_first) {
-			mlog(0, "Free items: (type %u, slot %d)\n",
-			     fl->f_inode_type, fl->f_slot);
+			trace_ocfs2_run_deallocs(fl->f_inode_type,
+						 fl->f_slot);
 			ret2 = ocfs2_free_cached_blocks(osb,
 							fl->f_inode_type,
 							fl->f_slot,
@@ -6558,8 +6527,9 @@ int ocfs2_cache_block_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
 		goto out;
 	}
 
-	mlog(0, "Insert: (type %d, slot %u, bit %u, blk %llu)\n",
-	     type, slot, bit, (unsigned long long)blkno);
+	trace_ocfs2_cache_block_dealloc(type, slot,
+					(unsigned long long)suballoc,
+					(unsigned long long)blkno, bit);
 
 	item->free_bg = suballoc;
 	item->free_blk = blkno;
@@ -7005,8 +6975,6 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
 	struct ocfs2_extent_tree et;
 	struct ocfs2_cached_dealloc_ctxt dealloc;
 
-	mlog_entry_void();
-
 	ocfs2_init_dinode_extent_tree(&et, INODE_CACHE(inode), di_bh);
 	ocfs2_init_dealloc_ctxt(&dealloc);
 
@@ -7041,8 +7009,11 @@ start:
 		goto bail;
 	}
 
-	mlog(0, "inode->ip_clusters = %u, tree_depth = %u\n",
-	     OCFS2_I(inode)->ip_clusters, path->p_tree_depth);
+	trace_ocfs2_commit_truncate(
+		(unsigned long long)OCFS2_I(inode)->ip_blkno,
+		new_highest_cpos,
+		OCFS2_I(inode)->ip_clusters,
+		path->p_tree_depth);
 
 	/*
 	 * By now, el will point to the extent list on the bottom most
@@ -7136,7 +7107,6 @@ bail:
 
 	ocfs2_free_path(path);
 
-	mlog_exit(status);
 	return status;
 }
 
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 1fbb0e2..ac97bca 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -29,7 +29,6 @@
 #include <linux/mpage.h>
 #include <linux/quotaops.h>
 
-#define MLOG_MASK_PREFIX ML_FILE_IO
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -45,6 +44,7 @@
 #include "super.h"
 #include "symlink.h"
 #include "refcounttree.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -59,8 +59,9 @@ static int ocfs2_symlink_get_block(struct inode *inode, sector_t iblock,
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 	void *kaddr;
 
-	mlog_entry("(0x%p, %llu, 0x%p, %d)\n", inode,
-		   (unsigned long long)iblock, bh_result, create);
+	trace_ocfs2_symlink_get_block(
+			(unsigned long long)OCFS2_I(inode)->ip_blkno,
+			(unsigned long long)iblock, bh_result, create);
 
 	BUG_ON(ocfs2_inode_is_fast_symlink(inode));
 
@@ -123,7 +124,6 @@ static int ocfs2_symlink_get_block(struct inode *inode, sector_t iblock,
 bail:
 	brelse(bh);
 
-	mlog_exit(err);
 	return err;
 }
 
@@ -136,8 +136,8 @@ int ocfs2_get_block(struct inode *inode, sector_t iblock,
 	u64 p_blkno, count, past_eof;
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 
-	mlog_entry("(0x%p, %llu, 0x%p, %d)\n", inode,
-		   (unsigned long long)iblock, bh_result, create);
+	trace_ocfs2_get_block((unsigned long long)OCFS2_I(inode)->ip_blkno,
+			      (unsigned long long)iblock, bh_result, create);
 
 	if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_SYSTEM_FILE)
 		mlog(ML_NOTICE, "get_block on system inode 0x%p (%lu)\n",
@@ -199,8 +199,9 @@ int ocfs2_get_block(struct inode *inode, sector_t iblock,
 	}
 
 	past_eof = ocfs2_blocks_for_bytes(inode->i_sb, i_size_read(inode));
-	mlog(0, "Inode %lu, past_eof = %llu\n", inode->i_ino,
-	     (unsigned long long)past_eof);
+
+	trace_ocfs2_get_block_end((unsigned long long)OCFS2_I(inode)->ip_blkno,
+				  (unsigned long long)past_eof);
 	if (create && (iblock >= past_eof))
 		set_buffer_new(bh_result);
 
@@ -208,7 +209,6 @@ bail:
 	if (err < 0)
 		err = -EIO;
 
-	mlog_exit(err);
 	return err;
 }
 
@@ -278,7 +278,8 @@ static int ocfs2_readpage(struct file *file, struct page *page)
 	loff_t start = (loff_t)page->index << PAGE_CACHE_SHIFT;
 	int ret, unlock = 1;
 
-	mlog_entry("(0x%p, %lu)\n", file, (page ? page->index : 0));
+	trace_ocfs2_readpage((unsigned long long)oi->ip_blkno,
+			     (page ? page->index : 0));
 
 	ret = ocfs2_inode_lock_with_page(inode, NULL, 0, page);
 	if (ret != 0) {
@@ -323,7 +324,6 @@ out_inode_unlock:
 out:
 	if (unlock)
 		unlock_page(page);
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -396,15 +396,11 @@ out_unlock:
  */
 static int ocfs2_writepage(struct page *page, struct writeback_control *wbc)
 {
-	int ret;
-
-	mlog_entry("(0x%p)\n", page);
-
-	ret = block_write_full_page(page, ocfs2_get_block, wbc);
+	trace_ocfs2_writepage(
+		(unsigned long long)OCFS2_I(page->mapping->host)->ip_blkno,
+		page->index);
 
-	mlog_exit(ret);
-
-	return ret;
+	return block_write_full_page(page, ocfs2_get_block, wbc);
 }
 
 /* Taken from ext3. We don't necessarily need the full blown
@@ -450,7 +446,8 @@ static sector_t ocfs2_bmap(struct address_space *mapping, sector_t block)
 	int err = 0;
 	struct inode *inode = mapping->host;
 
-	mlog_entry("(block = %llu)\n", (unsigned long long)block);
+	trace_ocfs2_bmap((unsigned long long)OCFS2_I(inode)->ip_blkno,
+			 (unsigned long long)block);
 
 	/* We don't need to lock journal system files, since they aren't
 	 * accessed concurrently from multiple nodes.
@@ -484,8 +481,6 @@ static sector_t ocfs2_bmap(struct address_space *mapping, sector_t block)
 bail:
 	status = err ? 0 : p_blkno;
 
-	mlog_exit((int)status);
-
 	return status;
 }
 
@@ -616,9 +611,6 @@ static ssize_t ocfs2_direct_IO(int rw,
 {
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
-	int ret;
-
-	mlog_entry_void();
 
 	/*
 	 * Fallback to buffered I/O if we see an inode without
@@ -631,13 +623,10 @@ static ssize_t ocfs2_direct_IO(int rw,
 	if (i_size_read(inode) <= offset)
 		return 0;
 
-	ret = __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev,
-				   iov, offset, nr_segs,
-				   ocfs2_direct_IO_get_blocks,
-				   ocfs2_dio_end_io, NULL, 0);
-
-	mlog_exit(ret);
-	return ret;
+	return __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev,
+				    iov, offset, nr_segs,
+				    ocfs2_direct_IO_get_blocks,
+				    ocfs2_dio_end_io, NULL, 0);
 }
 
 static void ocfs2_figure_cluster_boundaries(struct ocfs2_super *osb,
@@ -1026,6 +1015,12 @@ static int ocfs2_prepare_page_for_write(struct inode *inode, u64 *p_blkno,
 	ocfs2_figure_cluster_boundaries(OCFS2_SB(inode->i_sb), cpos,
 					&cluster_start, &cluster_end);
 
+	/* treat the write as new if the a hole/lseek spanned across
+	 * the page boundary.
+	 */
+	new = new | ((i_size_read(inode) <= page_offset(page)) &&
+			(page_offset(page) <= user_pos));
+
 	if (page == wc->w_target_page) {
 		map_from = user_pos & (PAGE_CACHE_SIZE - 1);
 		map_to = map_from + user_len;
@@ -1534,9 +1529,9 @@ static int ocfs2_try_to_write_inline_data(struct address_space *mapping,
 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
 	struct ocfs2_dinode *di = NULL;
 
-	mlog(0, "Inode %llu, write of %u bytes at off %llu. features: 0x%x\n",
-	     (unsigned long long)oi->ip_blkno, len, (unsigned long long)pos,
-	     oi->ip_dyn_features);
+	trace_ocfs2_try_to_write_inline_data((unsigned long long)oi->ip_blkno,
+					     len, (unsigned long long)pos,
+					     oi->ip_dyn_features);
 
 	/*
 	 * Handle inodes which already have inline data 1st.
@@ -1739,6 +1734,13 @@ try_again:
 
 	di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;
 
+	trace_ocfs2_write_begin_nolock(
+			(unsigned long long)OCFS2_I(inode)->ip_blkno,
+			(long long)i_size_read(inode),
+			le32_to_cpu(di->i_clusters),
+			pos, len, flags, mmap_page,
+			clusters_to_alloc, extents_to_split);
+
 	/*
 	 * We set w_target_from, w_target_to here so that
 	 * ocfs2_write_end() knows which range in the target page to
@@ -1751,12 +1753,6 @@ try_again:
 		 * ocfs2_lock_allocators(). It greatly over-estimates
 		 * the work to be done.
 		 */
-		mlog(0, "extend inode %llu, i_size = %lld, di->i_clusters = %u,"
-		     " clusters_to_add = %u, extents_to_split = %u\n",
-		     (unsigned long long)OCFS2_I(inode)->ip_blkno,
-		     (long long)i_size_read(inode), le32_to_cpu(di->i_clusters),
-		     clusters_to_alloc, extents_to_split);
-
 		ocfs2_init_dinode_extent_tree(&et, INODE_CACHE(inode),
 					      wc->w_di_bh);
 		ret = ocfs2_lock_allocators(inode, &et,
@@ -1938,8 +1934,8 @@ static void ocfs2_write_end_inline(struct inode *inode, loff_t pos,
 	memcpy(di->id2.i_data.id_data + pos, kaddr + pos, *copied);
 	kunmap_atomic(kaddr, KM_USER0);
 
-	mlog(0, "Data written to inode at offset %llu. "
-	     "id_count = %u, copied = %u, i_dyn_features = 0x%x\n",
+	trace_ocfs2_write_end_inline(
+	     (unsigned long long)OCFS2_I(inode)->ip_blkno,
 	     (unsigned long long)pos, *copied,
 	     le16_to_cpu(di->id2.i_data.id_count),
 	     le16_to_cpu(di->i_dyn_features));
@@ -2043,7 +2039,6 @@ const struct address_space_operations ocfs2_aops = {
 	.write_begin		= ocfs2_write_begin,
 	.write_end		= ocfs2_write_end,
 	.bmap			= ocfs2_bmap,
-	.sync_page		= block_sync_page,
 	.direct_IO		= ocfs2_direct_IO,
 	.invalidatepage		= ocfs2_invalidatepage,
 	.releasepage		= ocfs2_releasepage,
diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c
index f9d5d3f..5d18ad1 100644
--- a/fs/ocfs2/buffer_head_io.c
+++ b/fs/ocfs2/buffer_head_io.c
@@ -35,8 +35,8 @@
 #include "inode.h"
 #include "journal.h"
 #include "uptodate.h"
-
 #include "buffer_head_io.h"
+#include "ocfs2_trace.h"
 
 /*
  * Bits on bh->b_state used by ocfs2.
@@ -55,8 +55,7 @@ int ocfs2_write_block(struct ocfs2_super *osb, struct buffer_head *bh,
 {
 	int ret = 0;
 
-	mlog_entry("(bh->b_blocknr = %llu, ci=%p)\n",
-		   (unsigned long long)bh->b_blocknr, ci);
+	trace_ocfs2_write_block((unsigned long long)bh->b_blocknr, ci);
 
 	BUG_ON(bh->b_blocknr < OCFS2_SUPER_BLOCK_BLKNO);
 	BUG_ON(buffer_jbd(bh));
@@ -66,6 +65,7 @@ int ocfs2_write_block(struct ocfs2_super *osb, struct buffer_head *bh,
 	 * can get modified during recovery even if read-only. */
 	if (ocfs2_is_hard_readonly(osb)) {
 		ret = -EROFS;
+		mlog_errno(ret);
 		goto out;
 	}
 
@@ -91,11 +91,11 @@ int ocfs2_write_block(struct ocfs2_super *osb, struct buffer_head *bh,
 		 * uptodate. */
 		ret = -EIO;
 		put_bh(bh);
+		mlog_errno(ret);
 	}
 
 	ocfs2_metadata_cache_io_unlock(ci);
 out:
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -106,10 +106,10 @@ int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64 block,
 	unsigned int i;
 	struct buffer_head *bh;
 
-	if (!nr) {
-		mlog(ML_BH_IO, "No buffers will be read!\n");
+	trace_ocfs2_read_blocks_sync((unsigned long long)block, nr);
+
+	if (!nr)
 		goto bail;
-	}
 
 	for (i = 0 ; i < nr ; i++) {
 		if (bhs[i] == NULL) {
@@ -123,10 +123,8 @@ int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64 block,
 		bh = bhs[i];
 
 		if (buffer_jbd(bh)) {
-			mlog(ML_BH_IO,
-			     "trying to sync read a jbd "
-			     "managed bh (blocknr = %llu), skipping\n",
-			     (unsigned long long)bh->b_blocknr);
+			trace_ocfs2_read_blocks_sync_jbd(
+					(unsigned long long)bh->b_blocknr);
 			continue;
 		}
 
@@ -186,8 +184,7 @@ int ocfs2_read_blocks(struct ocfs2_caching_info *ci, u64 block, int nr,
 	struct buffer_head *bh;
 	struct super_block *sb = ocfs2_metadata_cache_get_super(ci);
 
-	mlog_entry("(ci=%p, block=(%llu), nr=(%d), flags=%d)\n",
-		   ci, (unsigned long long)block, nr, flags);
+	trace_ocfs2_read_blocks_begin(ci, (unsigned long long)block, nr, flags);
 
 	BUG_ON(!ci);
 	BUG_ON((flags & OCFS2_BH_READAHEAD) &&
@@ -207,7 +204,6 @@ int ocfs2_read_blocks(struct ocfs2_caching_info *ci, u64 block, int nr,
 	}
 
 	if (nr == 0) {
-		mlog(ML_BH_IO, "No buffers will be read!\n");
 		status = 0;
 		goto bail;
 	}
@@ -251,8 +247,7 @@ int ocfs2_read_blocks(struct ocfs2_caching_info *ci, u64 block, int nr,
 		 */
 
 		if (!ignore_cache && !ocfs2_buffer_uptodate(ci, bh)) {
-			mlog(ML_UPTODATE,
-			     "bh (%llu), owner %llu not uptodate\n",
+			trace_ocfs2_read_blocks_from_disk(
 			     (unsigned long long)bh->b_blocknr,
 			     (unsigned long long)ocfs2_metadata_cache_owner(ci));
 			/* We're using ignore_cache here to say
@@ -260,11 +255,10 @@ int ocfs2_read_blocks(struct ocfs2_caching_info *ci, u64 block, int nr,
 			ignore_cache = 1;
 		}
 
+		trace_ocfs2_read_blocks_bh((unsigned long long)bh->b_blocknr,
+			ignore_cache, buffer_jbd(bh), buffer_dirty(bh));
+
 		if (buffer_jbd(bh)) {
-			if (ignore_cache)
-				mlog(ML_BH_IO, "trying to sync read a jbd "
-					       "managed bh (blocknr = %llu)\n",
-				     (unsigned long long)bh->b_blocknr);
 			continue;
 		}
 
@@ -272,9 +266,6 @@ int ocfs2_read_blocks(struct ocfs2_caching_info *ci, u64 block, int nr,
 			if (buffer_dirty(bh)) {
 				/* This should probably be a BUG, or
 				 * at least return an error. */
-				mlog(ML_BH_IO, "asking me to sync read a dirty "
-					       "buffer! (blocknr = %llu)\n",
-				     (unsigned long long)bh->b_blocknr);
 				continue;
 			}
 
@@ -367,14 +358,11 @@ int ocfs2_read_blocks(struct ocfs2_caching_info *ci, u64 block, int nr,
 	}
 	ocfs2_metadata_cache_io_unlock(ci);
 
-	mlog(ML_BH_IO, "block=(%llu), nr=(%d), cached=%s, flags=0x%x\n",
-	     (unsigned long long)block, nr,
-	     ((flags & OCFS2_BH_IGNORE_CACHE) || ignore_cache) ? "no" : "yes",
-	     flags);
+	trace_ocfs2_read_blocks_end((unsigned long long)block, nr,
+				    flags, ignore_cache);
 
 bail:
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -408,13 +396,12 @@ int ocfs2_write_super_or_backup(struct ocfs2_super *osb,
 	int ret = 0;
 	struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
 
-	mlog_entry_void();
-
 	BUG_ON(buffer_jbd(bh));
 	ocfs2_check_super_or_backup(osb->sb, bh->b_blocknr);
 
 	if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) {
 		ret = -EROFS;
+		mlog_errno(ret);
 		goto out;
 	}
 
@@ -434,9 +421,9 @@ int ocfs2_write_super_or_backup(struct ocfs2_super *osb,
 	if (!buffer_uptodate(bh)) {
 		ret = -EIO;
 		put_bh(bh);
+		mlog_errno(ret);
 	}
 
 out:
-	mlog_exit(ret);
 	return ret;
 }
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index b108e86..2461eb3 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -367,11 +367,7 @@ static inline void o2hb_bio_wait_dec(struct o2hb_bio_wait_ctxt *wc,
 static void o2hb_wait_on_io(struct o2hb_region *reg,
 			    struct o2hb_bio_wait_ctxt *wc)
 {
-	struct address_space *mapping = reg->hr_bdev->bd_inode->i_mapping;
-
-	blk_run_address_space(mapping);
 	o2hb_bio_wait_dec(wc, 1);
-
 	wait_for_completion(&wc->wc_io_complete);
 }
 
@@ -1658,8 +1654,6 @@ static int o2hb_populate_slot_data(struct o2hb_region *reg)
 	struct o2hb_disk_slot *slot;
 	struct o2hb_disk_heartbeat_block *hb_block;
 
-	mlog_entry_void();
-
 	ret = o2hb_read_slots(reg, reg->hr_blocks);
 	if (ret) {
 		mlog_errno(ret);
@@ -1681,7 +1675,6 @@ static int o2hb_populate_slot_data(struct o2hb_region *reg)
 	}
 
 out:
-	mlog_exit(ret);
 	return ret;
 }
 
diff --git a/fs/ocfs2/cluster/masklog.c b/fs/ocfs2/cluster/masklog.c
index 6c61771..07ac24f 100644
--- a/fs/ocfs2/cluster/masklog.c
+++ b/fs/ocfs2/cluster/masklog.c
@@ -30,7 +30,7 @@
 
 struct mlog_bits mlog_and_bits = MLOG_BITS_RHS(MLOG_INITIAL_AND_MASK);
 EXPORT_SYMBOL_GPL(mlog_and_bits);
-struct mlog_bits mlog_not_bits = MLOG_BITS_RHS(MLOG_INITIAL_NOT_MASK);
+struct mlog_bits mlog_not_bits = MLOG_BITS_RHS(0);
 EXPORT_SYMBOL_GPL(mlog_not_bits);
 
 static ssize_t mlog_mask_show(u64 mask, char *buf)
@@ -80,8 +80,6 @@ struct mlog_attribute {
 }
 
 static struct mlog_attribute mlog_attrs[MLOG_MAX_BITS] = {
-	define_mask(ENTRY),
-	define_mask(EXIT),
 	define_mask(TCP),
 	define_mask(MSG),
 	define_mask(SOCKET),
@@ -93,27 +91,11 @@ static struct mlog_attribute mlog_attrs[MLOG_MAX_BITS] = {
 	define_mask(DLM_THREAD),
 	define_mask(DLM_MASTER),
 	define_mask(DLM_RECOVERY),
-	define_mask(AIO),
-	define_mask(JOURNAL),
-	define_mask(DISK_ALLOC),
-	define_mask(SUPER),
-	define_mask(FILE_IO),
-	define_mask(EXTENT_MAP),
 	define_mask(DLM_GLUE),
-	define_mask(BH_IO),
-	define_mask(UPTODATE),
-	define_mask(NAMEI),
-	define_mask(INODE),
 	define_mask(VOTE),
-	define_mask(DCACHE),
 	define_mask(CONN),
 	define_mask(QUORUM),
-	define_mask(EXPORT),
-	define_mask(XATTR),
-	define_mask(QUOTA),
-	define_mask(REFCOUNT),
 	define_mask(BASTS),
-	define_mask(RESERVATIONS),
 	define_mask(CLUSTER),
 	define_mask(ERROR),
 	define_mask(NOTICE),
diff --git a/fs/ocfs2/cluster/masklog.h b/fs/ocfs2/cluster/masklog.h
index 34d6544..baa2b9e 100644
--- a/fs/ocfs2/cluster/masklog.h
+++ b/fs/ocfs2/cluster/masklog.h
@@ -82,41 +82,23 @@
 
 /* bits that are frequently given and infrequently matched in the low word */
 /* NOTE: If you add a flag, you need to also update masklog.c! */
-#define ML_ENTRY	0x0000000000000001ULL /* func call entry */
-#define ML_EXIT		0x0000000000000002ULL /* func call exit */
-#define ML_TCP		0x0000000000000004ULL /* net cluster/tcp.c */
-#define ML_MSG		0x0000000000000008ULL /* net network messages */
-#define ML_SOCKET	0x0000000000000010ULL /* net socket lifetime */
-#define ML_HEARTBEAT	0x0000000000000020ULL /* hb all heartbeat tracking */
-#define ML_HB_BIO	0x0000000000000040ULL /* hb io tracing */
-#define ML_DLMFS	0x0000000000000080ULL /* dlm user dlmfs */
-#define ML_DLM		0x0000000000000100ULL /* dlm general debugging */
-#define ML_DLM_DOMAIN	0x0000000000000200ULL /* dlm domain debugging */
-#define ML_DLM_THREAD	0x0000000000000400ULL /* dlm domain thread */
-#define ML_DLM_MASTER	0x0000000000000800ULL /* dlm master functions */
-#define ML_DLM_RECOVERY	0x0000000000001000ULL /* dlm master functions */
-#define ML_AIO		0x0000000000002000ULL /* ocfs2 aio read and write */
-#define ML_JOURNAL	0x0000000000004000ULL /* ocfs2 journalling functions */
-#define ML_DISK_ALLOC	0x0000000000008000ULL /* ocfs2 disk allocation */
-#define ML_SUPER	0x0000000000010000ULL /* ocfs2 mount / umount */
-#define ML_FILE_IO	0x0000000000020000ULL /* ocfs2 file I/O */
-#define ML_EXTENT_MAP	0x0000000000040000ULL /* ocfs2 extent map caching */
-#define ML_DLM_GLUE	0x0000000000080000ULL /* ocfs2 dlm glue layer */
-#define ML_BH_IO	0x0000000000100000ULL /* ocfs2 buffer I/O */
-#define ML_UPTODATE	0x0000000000200000ULL /* ocfs2 caching sequence #'s */
-#define ML_NAMEI	0x0000000000400000ULL /* ocfs2 directory / namespace */
-#define ML_INODE	0x0000000000800000ULL /* ocfs2 inode manipulation */
-#define ML_VOTE		0x0000000001000000ULL /* ocfs2 node messaging  */
-#define ML_DCACHE	0x0000000002000000ULL /* ocfs2 dcache operations */
-#define ML_CONN		0x0000000004000000ULL /* net connection management */
-#define ML_QUORUM	0x0000000008000000ULL /* net connection quorum */
-#define ML_EXPORT	0x0000000010000000ULL /* ocfs2 export operations */
-#define ML_XATTR	0x0000000020000000ULL /* ocfs2 extended attributes */
-#define ML_QUOTA	0x0000000040000000ULL /* ocfs2 quota operations */
-#define ML_REFCOUNT	0x0000000080000000ULL /* refcount tree operations */
-#define ML_BASTS	0x0000000100000000ULL /* dlmglue asts and basts */
-#define ML_RESERVATIONS	0x0000000200000000ULL /* ocfs2 alloc reservations */
-#define ML_CLUSTER	0x0000000400000000ULL /* cluster stack */
+#define ML_TCP		0x0000000000000001ULL /* net cluster/tcp.c */
+#define ML_MSG		0x0000000000000002ULL /* net network messages */
+#define ML_SOCKET	0x0000000000000004ULL /* net socket lifetime */
+#define ML_HEARTBEAT	0x0000000000000008ULL /* hb all heartbeat tracking */
+#define ML_HB_BIO	0x0000000000000010ULL /* hb io tracing */
+#define ML_DLMFS	0x0000000000000020ULL /* dlm user dlmfs */
+#define ML_DLM		0x0000000000000040ULL /* dlm general debugging */
+#define ML_DLM_DOMAIN	0x0000000000000080ULL /* dlm domain debugging */
+#define ML_DLM_THREAD	0x0000000000000100ULL /* dlm domain thread */
+#define ML_DLM_MASTER	0x0000000000000200ULL /* dlm master functions */
+#define ML_DLM_RECOVERY	0x0000000000000400ULL /* dlm master functions */
+#define ML_DLM_GLUE	0x0000000000000800ULL /* ocfs2 dlm glue layer */
+#define ML_VOTE		0x0000000000001000ULL /* ocfs2 node messaging  */
+#define ML_CONN		0x0000000000002000ULL /* net connection management */
+#define ML_QUORUM	0x0000000000004000ULL /* net connection quorum */
+#define ML_BASTS	0x0000000000008000ULL /* dlmglue asts and basts */
+#define ML_CLUSTER	0x0000000000010000ULL /* cluster stack */
 
 /* bits that are infrequently given and frequently matched in the high word */
 #define ML_ERROR	0x1000000000000000ULL /* sent to KERN_ERR */
@@ -124,7 +106,6 @@
 #define ML_KTHREAD	0x4000000000000000ULL /* kernel thread activity */
 
 #define MLOG_INITIAL_AND_MASK (ML_ERROR|ML_NOTICE)
-#define MLOG_INITIAL_NOT_MASK (ML_ENTRY|ML_EXIT)
 #ifndef MLOG_MASK_PREFIX
 #define MLOG_MASK_PREFIX 0
 #endif
@@ -222,58 +203,6 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
 		mlog(ML_ERROR, "status = %lld\n", (long long)_st);	\
 } while (0)
 
-#if defined(CONFIG_OCFS2_DEBUG_MASKLOG)
-#define mlog_entry(fmt, args...) do {					\
-	mlog(ML_ENTRY, "ENTRY:" fmt , ##args);				\
-} while (0)
-
-#define mlog_entry_void() do {						\
-	mlog(ML_ENTRY, "ENTRY:\n");					\
-} while (0)
-
-/*
- * We disable this for sparse.
- */
-#if !defined(__CHECKER__)
-#define mlog_exit(st) do {						     \
-	if (__builtin_types_compatible_p(typeof(st), unsigned long))	     \
-		mlog(ML_EXIT, "EXIT: %lu\n", (unsigned long) (st));	     \
-	else if (__builtin_types_compatible_p(typeof(st), signed long))      \
-		mlog(ML_EXIT, "EXIT: %ld\n", (signed long) (st));	     \
-	else if (__builtin_types_compatible_p(typeof(st), unsigned int)	     \
-		 || __builtin_types_compatible_p(typeof(st), unsigned short) \
-		 || __builtin_types_compatible_p(typeof(st), unsigned char)) \
-		mlog(ML_EXIT, "EXIT: %u\n", (unsigned int) (st));	     \
-	else if (__builtin_types_compatible_p(typeof(st), signed int)	     \
-		 || __builtin_types_compatible_p(typeof(st), signed short)   \
-		 || __builtin_types_compatible_p(typeof(st), signed char))   \
-		mlog(ML_EXIT, "EXIT: %d\n", (signed int) (st));		     \
-	else if (__builtin_types_compatible_p(typeof(st), long long))	     \
-		mlog(ML_EXIT, "EXIT: %lld\n", (long long) (st));	     \
-	else								     \
-		mlog(ML_EXIT, "EXIT: %llu\n", (unsigned long long) (st));    \
-} while (0)
-#else
-#define mlog_exit(st) do {						     \
-	mlog(ML_EXIT, "EXIT: %lld\n", (long long) (st));		     \
-} while (0)
-#endif
-
-#define mlog_exit_ptr(ptr) do {						\
-	mlog(ML_EXIT, "EXIT: %p\n", ptr);				\
-} while (0)
-
-#define mlog_exit_void() do {						\
-	mlog(ML_EXIT, "EXIT\n");					\
-} while (0)
-#else
-#define mlog_entry(...)  do { } while (0)
-#define mlog_entry_void(...)  do { } while (0)
-#define mlog_exit(...)  do { } while (0)
-#define mlog_exit_ptr(...)  do { } while (0)
-#define mlog_exit_void(...)  do { } while (0)
-#endif  /* defined(CONFIG_OCFS2_DEBUG_MASKLOG) */
-
 #define mlog_bug_on_msg(cond, fmt, args...) do {			\
 	if (cond) {							\
 		mlog(ML_ERROR, "bug expression: " #cond "\n");		\
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index 3b11cb1..ee04ff5 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -210,10 +210,6 @@ static inline void o2net_set_func_stop_time(struct o2net_sock_container *sc)
 	sc->sc_tv_func_stop = ktime_get();
 }
 
-static ktime_t o2net_get_func_run_time(struct o2net_sock_container *sc)
-{
-	return ktime_sub(sc->sc_tv_func_stop, sc->sc_tv_func_start);
-}
 #else  /* CONFIG_DEBUG_FS */
 # define o2net_init_nst(a, b, c, d, e)
 # define o2net_set_nst_sock_time(a)
@@ -227,10 +223,14 @@ static ktime_t o2net_get_func_run_time(struct o2net_sock_container *sc)
 # define o2net_set_advance_stop_time(a)
 # define o2net_set_func_start_time(a)
 # define o2net_set_func_stop_time(a)
-# define o2net_get_func_run_time(a)		(ktime_t)0
 #endif /* CONFIG_DEBUG_FS */
 
 #ifdef CONFIG_OCFS2_FS_STATS
+static ktime_t o2net_get_func_run_time(struct o2net_sock_container *sc)
+{
+	return ktime_sub(sc->sc_tv_func_stop, sc->sc_tv_func_start);
+}
+
 static void o2net_update_send_stats(struct o2net_send_tracking *nst,
 				    struct o2net_sock_container *sc)
 {
diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c
index 7eb9040..e5ba348 100644
--- a/fs/ocfs2/dcache.c
+++ b/fs/ocfs2/dcache.c
@@ -28,7 +28,6 @@
 #include <linux/slab.h>
 #include <linux/namei.h>
 
-#define MLOG_MASK_PREFIX ML_DCACHE
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -39,6 +38,7 @@
 #include "file.h"
 #include "inode.h"
 #include "super.h"
+#include "ocfs2_trace.h"
 
 void ocfs2_dentry_attach_gen(struct dentry *dentry)
 {
@@ -62,8 +62,8 @@ static int ocfs2_dentry_revalidate(struct dentry *dentry,
 	inode = dentry->d_inode;
 	osb = OCFS2_SB(dentry->d_sb);
 
-	mlog_entry("(0x%p, '%.*s')\n", dentry,
-		   dentry->d_name.len, dentry->d_name.name);
+	trace_ocfs2_dentry_revalidate(dentry, dentry->d_name.len,
+				      dentry->d_name.name);
 
 	/* For a negative dentry -
 	 * check the generation number of the parent and compare with the
@@ -73,9 +73,10 @@ static int ocfs2_dentry_revalidate(struct dentry *dentry,
 		unsigned long gen = (unsigned long) dentry->d_fsdata;
 		unsigned long pgen =
 			OCFS2_I(dentry->d_parent->d_inode)->ip_dir_lock_gen;
-		mlog(0, "negative dentry: %.*s parent gen: %lu "
-			"dentry gen: %lu\n",
-			dentry->d_name.len, dentry->d_name.name, pgen, gen);
+
+		trace_ocfs2_dentry_revalidate_negative(dentry->d_name.len,
+						       dentry->d_name.name,
+						       pgen, gen);
 		if (gen != pgen)
 			goto bail;
 		goto valid;
@@ -90,8 +91,8 @@ static int ocfs2_dentry_revalidate(struct dentry *dentry,
 	/* did we or someone else delete this inode? */
 	if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) {
 		spin_unlock(&OCFS2_I(inode)->ip_lock);
-		mlog(0, "inode (%llu) deleted, returning false\n",
-		     (unsigned long long)OCFS2_I(inode)->ip_blkno);
+		trace_ocfs2_dentry_revalidate_delete(
+				(unsigned long long)OCFS2_I(inode)->ip_blkno);
 		goto bail;
 	}
 	spin_unlock(&OCFS2_I(inode)->ip_lock);
@@ -101,10 +102,9 @@ static int ocfs2_dentry_revalidate(struct dentry *dentry,
 	 * inode nlink hits zero, it never goes back.
 	 */
 	if (inode->i_nlink == 0) {
-		mlog(0, "Inode %llu orphaned, returning false "
-		     "dir = %d\n",
-		     (unsigned long long)OCFS2_I(inode)->ip_blkno,
-		     S_ISDIR(inode->i_mode));
+		trace_ocfs2_dentry_revalidate_orphaned(
+			(unsigned long long)OCFS2_I(inode)->ip_blkno,
+			S_ISDIR(inode->i_mode));
 		goto bail;
 	}
 
@@ -113,9 +113,8 @@ static int ocfs2_dentry_revalidate(struct dentry *dentry,
 	 * redo it.
 	 */
 	if (!dentry->d_fsdata) {
-		mlog(0, "Inode %llu doesn't have dentry lock, "
-		     "returning false\n",
-		     (unsigned long long)OCFS2_I(inode)->ip_blkno);
+		trace_ocfs2_dentry_revalidate_nofsdata(
+				(unsigned long long)OCFS2_I(inode)->ip_blkno);
 		goto bail;
 	}
 
@@ -123,8 +122,7 @@ valid:
 	ret = 1;
 
 bail:
-	mlog_exit(ret);
-
+	trace_ocfs2_dentry_revalidate_ret(ret);
 	return ret;
 }
 
@@ -181,8 +179,8 @@ struct dentry *ocfs2_find_local_alias(struct inode *inode,
 
 		spin_lock(&dentry->d_lock);
 		if (ocfs2_match_dentry(dentry, parent_blkno, skip_unhashed)) {
-			mlog(0, "dentry found: %.*s\n",
-			     dentry->d_name.len, dentry->d_name.name);
+			trace_ocfs2_find_local_alias(dentry->d_name.len,
+						     dentry->d_name.name);
 
 			dget_dlock(dentry);
 			spin_unlock(&dentry->d_lock);
@@ -240,9 +238,8 @@ int ocfs2_dentry_attach_lock(struct dentry *dentry,
 	struct dentry *alias;
 	struct ocfs2_dentry_lock *dl = dentry->d_fsdata;
 
-	mlog(0, "Attach \"%.*s\", parent %llu, fsdata: %p\n",
-	     dentry->d_name.len, dentry->d_name.name,
-	     (unsigned long long)parent_blkno, dl);
+	trace_ocfs2_dentry_attach_lock(dentry->d_name.len, dentry->d_name.name,
+				       (unsigned long long)parent_blkno, dl);
 
 	/*
 	 * Negative dentry. We ignore these for now.
@@ -292,7 +289,9 @@ int ocfs2_dentry_attach_lock(struct dentry *dentry,
 				(unsigned long long)parent_blkno,
 				(unsigned long long)dl->dl_parent_blkno);
 
-		mlog(0, "Found: %s\n", dl->dl_lockres.l_name);
+		trace_ocfs2_dentry_attach_lock_found(dl->dl_lockres.l_name,
+				(unsigned long long)parent_blkno,
+				(unsigned long long)OCFS2_I(inode)->ip_blkno);
 
 		goto out_attach;
 	}
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index f97b6f1..9fe5b8fd 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -43,7 +43,6 @@
 #include <linux/quotaops.h>
 #include <linux/sort.h>
 
-#define MLOG_MASK_PREFIX ML_NAMEI
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -61,6 +60,7 @@
 #include "super.h"
 #include "sysfile.h"
 #include "uptodate.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -322,21 +322,23 @@ static int ocfs2_check_dir_entry(struct inode * dir,
 	const char *error_msg = NULL;
 	const int rlen = le16_to_cpu(de->rec_len);
 
-	if (rlen < OCFS2_DIR_REC_LEN(1))
+	if (unlikely(rlen < OCFS2_DIR_REC_LEN(1)))
 		error_msg = "rec_len is smaller than minimal";
-	else if (rlen % 4 != 0)
+	else if (unlikely(rlen % 4 != 0))
 		error_msg = "rec_len % 4 != 0";
-	else if (rlen < OCFS2_DIR_REC_LEN(de->name_len))
+	else if (unlikely(rlen < OCFS2_DIR_REC_LEN(de->name_len)))
 		error_msg = "rec_len is too small for name_len";
-	else if (((char *) de - bh->b_data) + rlen > dir->i_sb->s_blocksize)
+	else if (unlikely(
+		 ((char *) de - bh->b_data) + rlen > dir->i_sb->s_blocksize))
 		error_msg = "directory entry across blocks";
 
-	if (error_msg != NULL)
+	if (unlikely(error_msg != NULL))
 		mlog(ML_ERROR, "bad entry in directory #%llu: %s - "
 		     "offset=%lu, inode=%llu, rec_len=%d, name_len=%d\n",
 		     (unsigned long long)OCFS2_I(dir)->ip_blkno, error_msg,
 		     offset, (unsigned long long)le64_to_cpu(de->inode), rlen,
 		     de->name_len);
+
 	return error_msg == NULL ? 1 : 0;
 }
 
@@ -367,8 +369,6 @@ static inline int ocfs2_search_dirblock(struct buffer_head *bh,
 	int de_len;
 	int ret = 0;
 
-	mlog_entry_void();
-
 	de_buf = first_de;
 	dlimit = de_buf + bytes;
 
@@ -402,7 +402,7 @@ static inline int ocfs2_search_dirblock(struct buffer_head *bh,
 	}
 
 bail:
-	mlog_exit(ret);
+	trace_ocfs2_search_dirblock(ret);
 	return ret;
 }
 
@@ -447,8 +447,7 @@ static int ocfs2_validate_dir_block(struct super_block *sb,
 	 * We don't validate dirents here, that's handled
 	 * in-place when the code walks them.
 	 */
-	mlog(0, "Validating dirblock %llu\n",
-	     (unsigned long long)bh->b_blocknr);
+	trace_ocfs2_validate_dir_block((unsigned long long)bh->b_blocknr);
 
 	BUG_ON(!buffer_uptodate(bh));
 
@@ -706,8 +705,6 @@ static struct buffer_head *ocfs2_find_entry_el(const char *name, int namelen,
 	int num = 0;
 	int nblocks, i, err;
 
-	mlog_entry_void();
-
 	sb = dir->i_sb;
 
 	nblocks = i_size_read(dir) >> sb->s_blocksize_bits;
@@ -788,7 +785,7 @@ cleanup_and_exit:
 	for (; ra_ptr < ra_max; ra_ptr++)
 		brelse(bh_use[ra_ptr]);
 
-	mlog_exit_ptr(ret);
+	trace_ocfs2_find_entry_el(ret);
 	return ret;
 }
 
@@ -950,11 +947,9 @@ static int ocfs2_dx_dir_search(const char *name, int namelen,
 		goto out;
 	}
 
-	mlog(0, "Dir %llu: name: \"%.*s\", lookup of hash: %u.0x%x "
-	     "returns: %llu\n",
-	     (unsigned long long)OCFS2_I(dir)->ip_blkno,
-	     namelen, name, hinfo->major_hash, hinfo->minor_hash,
-	     (unsigned long long)phys);
+	trace_ocfs2_dx_dir_search((unsigned long long)OCFS2_I(dir)->ip_blkno,
+				  namelen, name, hinfo->major_hash,
+				  hinfo->minor_hash, (unsigned long long)phys);
 
 	ret = ocfs2_read_dx_leaf(dir, phys, &dx_leaf_bh);
 	if (ret) {
@@ -964,9 +959,9 @@ static int ocfs2_dx_dir_search(const char *name, int namelen,
 
 	dx_leaf = (struct ocfs2_dx_leaf *) dx_leaf_bh->b_data;
 
-	mlog(0, "leaf info: num_used: %d, count: %d\n",
-	     le16_to_cpu(dx_leaf->dl_list.de_num_used),
-	     le16_to_cpu(dx_leaf->dl_list.de_count));
+	trace_ocfs2_dx_dir_search_leaf_info(
+			le16_to_cpu(dx_leaf->dl_list.de_num_used),
+			le16_to_cpu(dx_leaf->dl_list.de_count));
 
 	entry_list = &dx_leaf->dl_list;
 
@@ -1166,8 +1161,6 @@ static int __ocfs2_delete_entry(handle_t *handle, struct inode *dir,
 	int i, status = -ENOENT;
 	ocfs2_journal_access_func access = ocfs2_journal_access_db;
 
-	mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p)\n", handle, dir, de_del, bh);
-
 	if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
 		access = ocfs2_journal_access_di;
 
@@ -1202,7 +1195,6 @@ static int __ocfs2_delete_entry(handle_t *handle, struct inode *dir,
 		de = (struct ocfs2_dir_entry *)((char *)de + le16_to_cpu(de->rec_len));
 	}
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -1348,8 +1340,8 @@ static int ocfs2_delete_entry_dx(handle_t *handle, struct inode *dir,
 		}
 	}
 
-	mlog(0, "Dir %llu: delete entry at index: %d\n",
-	     (unsigned long long)OCFS2_I(dir)->ip_blkno, index);
+	trace_ocfs2_delete_entry_dx((unsigned long long)OCFS2_I(dir)->ip_blkno,
+				    index);
 
 	ret = __ocfs2_delete_entry(handle, dir, lookup->dl_entry,
 				   leaf_bh, leaf_bh->b_data, leaf_bh->b_size);
@@ -1632,8 +1624,6 @@ int __ocfs2_add_entry(handle_t *handle,
 	struct buffer_head *insert_bh = lookup->dl_leaf_bh;
 	char *data_start = insert_bh->b_data;
 
-	mlog_entry_void();
-
 	if (!namelen)
 		return -EINVAL;
 
@@ -1765,8 +1755,9 @@ int __ocfs2_add_entry(handle_t *handle,
 	 * from ever getting here. */
 	retval = -ENOSPC;
 bail:
+	if (retval)
+		mlog_errno(retval);
 
-	mlog_exit(retval);
 	return retval;
 }
 
@@ -2028,8 +2019,7 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir)
 	struct inode *inode = filp->f_path.dentry->d_inode;
 	int lock_level = 0;
 
-	mlog_entry("dirino=%llu\n",
-		   (unsigned long long)OCFS2_I(inode)->ip_blkno);
+	trace_ocfs2_readdir((unsigned long long)OCFS2_I(inode)->ip_blkno);
 
 	error = ocfs2_inode_lock_atime(inode, filp->f_vfsmnt, &lock_level);
 	if (lock_level && error >= 0) {
@@ -2051,9 +2041,10 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir)
 				      dirent, filldir, NULL);
 
 	ocfs2_inode_unlock(inode, lock_level);
+	if (error)
+		mlog_errno(error);
 
 bail_nolock:
-	mlog_exit(error);
 
 	return error;
 }
@@ -2069,8 +2060,8 @@ int ocfs2_find_files_on_disk(const char *name,
 {
 	int status = -ENOENT;
 
-	mlog(0, "name=%.*s, blkno=%p, inode=%llu\n", namelen, name, blkno,
-	     (unsigned long long)OCFS2_I(inode)->ip_blkno);
+	trace_ocfs2_find_files_on_disk(namelen, name, blkno,
+				(unsigned long long)OCFS2_I(inode)->ip_blkno);
 
 	status = ocfs2_find_entry(name, namelen, inode, lookup);
 	if (status)
@@ -2114,8 +2105,8 @@ int ocfs2_check_dir_for_entry(struct inode *dir,
 	int ret;
 	struct ocfs2_dir_lookup_result lookup = { NULL, };
 
-	mlog_entry("dir %llu, name '%.*s'\n",
-		   (unsigned long long)OCFS2_I(dir)->ip_blkno, namelen, name);
+	trace_ocfs2_check_dir_for_entry(
+		(unsigned long long)OCFS2_I(dir)->ip_blkno, namelen, name);
 
 	ret = -EEXIST;
 	if (ocfs2_find_entry(name, namelen, dir, &lookup) == 0)
@@ -2125,7 +2116,8 @@ int ocfs2_check_dir_for_entry(struct inode *dir,
 bail:
 	ocfs2_free_dir_lookup_result(&lookup);
 
-	mlog_exit(ret);
+	if (ret)
+		mlog_errno(ret);
 	return ret;
 }
 
@@ -2324,8 +2316,6 @@ static int ocfs2_fill_new_dir_el(struct ocfs2_super *osb,
 	struct buffer_head *new_bh = NULL;
 	struct ocfs2_dir_entry *de;
 
-	mlog_entry_void();
-
 	if (ocfs2_new_dir_wants_trailer(inode))
 		size = ocfs2_dir_trailer_blk_off(parent->i_sb);
 
@@ -2380,7 +2370,6 @@ static int ocfs2_fill_new_dir_el(struct ocfs2_super *osb,
 bail:
 	brelse(new_bh);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -2409,9 +2398,9 @@ static int ocfs2_dx_dir_attach_index(struct ocfs2_super *osb,
 		goto out;
 	}
 
-	mlog(0, "Dir %llu, attach new index block: %llu\n",
-	     (unsigned long long)OCFS2_I(dir)->ip_blkno,
-	     (unsigned long long)dr_blkno);
+	trace_ocfs2_dx_dir_attach_index(
+				(unsigned long long)OCFS2_I(dir)->ip_blkno,
+				(unsigned long long)dr_blkno);
 
 	dx_root_bh = sb_getblk(osb->sb, dr_blkno);
 	if (dx_root_bh == NULL) {
@@ -2511,11 +2500,10 @@ static int ocfs2_dx_dir_format_cluster(struct ocfs2_super *osb,
 		dx_leaf->dl_list.de_count =
 			cpu_to_le16(ocfs2_dx_entries_per_leaf(osb->sb));
 
-		mlog(0,
-		     "Dir %llu, format dx_leaf: %llu, entry count: %u\n",
-		     (unsigned long long)OCFS2_I(dir)->ip_blkno,
-		     (unsigned long long)bh->b_blocknr,
-		     le16_to_cpu(dx_leaf->dl_list.de_count));
+		trace_ocfs2_dx_dir_format_cluster(
+				(unsigned long long)OCFS2_I(dir)->ip_blkno,
+				(unsigned long long)bh->b_blocknr,
+				le16_to_cpu(dx_leaf->dl_list.de_count));
 
 		ocfs2_journal_dirty(handle, bh);
 	}
@@ -2759,12 +2747,11 @@ static void ocfs2_dx_dir_index_root_block(struct inode *dir,
 
 		ocfs2_dx_dir_name_hash(dir, de->name, de->name_len, &hinfo);
 
-		mlog(0,
-		     "dir: %llu, major: 0x%x minor: 0x%x, index: %u, name: %.*s\n",
-		     (unsigned long long)dir->i_ino, hinfo.major_hash,
-		     hinfo.minor_hash,
-		     le16_to_cpu(dx_root->dr_entries.de_num_used),
-		     de->name_len, de->name);
+		trace_ocfs2_dx_dir_index_root_block(
+				(unsigned long long)dir->i_ino,
+				hinfo.major_hash, hinfo.minor_hash,
+				de->name_len, de->name,
+				le16_to_cpu(dx_root->dr_entries.de_num_used));
 
 		ocfs2_dx_entry_list_insert(&dx_root->dr_entries, &hinfo,
 					   dirent_blk);
@@ -3235,7 +3222,6 @@ static int ocfs2_do_extend_dir(struct super_block *sb,
 bail:
 	if (did_quota && status < 0)
 		dquot_free_space_nodirty(dir, ocfs2_clusters_to_bytes(sb, 1));
-	mlog_exit(status);
 	return status;
 }
 
@@ -3270,8 +3256,6 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
 	struct ocfs2_extent_tree et;
 	struct buffer_head *dx_root_bh = lookup->dl_dx_root_bh;
 
-	mlog_entry_void();
-
 	if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
 		/*
 		 * This would be a code error as an inline directory should
@@ -3320,8 +3304,8 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
 	down_write(&OCFS2_I(dir)->ip_alloc_sem);
 	drop_alloc_sem = 1;
 	dir_i_size = i_size_read(dir);
-	mlog(0, "extending dir %llu (i_size = %lld)\n",
-	     (unsigned long long)OCFS2_I(dir)->ip_blkno, dir_i_size);
+	trace_ocfs2_extend_dir((unsigned long long)OCFS2_I(dir)->ip_blkno,
+			       dir_i_size);
 
 	/* dir->i_size is always block aligned. */
 	spin_lock(&OCFS2_I(dir)->ip_lock);
@@ -3436,7 +3420,6 @@ bail:
 
 	brelse(new_bh);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -3583,8 +3566,9 @@ next:
 	status = 0;
 bail:
 	brelse(bh);
+	if (status)
+		mlog_errno(status);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -3815,9 +3799,9 @@ static int ocfs2_dx_dir_rebalance(struct ocfs2_super *osb, struct inode *dir,
 	struct ocfs2_dx_root_block *dx_root;
 	struct ocfs2_dx_leaf *tmp_dx_leaf = NULL;
 
-	mlog(0, "DX Dir: %llu, rebalance leaf leaf_blkno: %llu insert: %u\n",
-	     (unsigned long long)OCFS2_I(dir)->ip_blkno,
-	     (unsigned long long)leaf_blkno, insert_hash);
+	trace_ocfs2_dx_dir_rebalance((unsigned long long)OCFS2_I(dir)->ip_blkno,
+				     (unsigned long long)leaf_blkno,
+				     insert_hash);
 
 	ocfs2_init_dx_root_extent_tree(&et, INODE_CACHE(dir), dx_root_bh);
 
@@ -3897,8 +3881,7 @@ static int ocfs2_dx_dir_rebalance(struct ocfs2_super *osb, struct inode *dir,
 		goto  out_commit;
 	}
 
-	mlog(0, "Split leaf (%u) at %u, insert major hash is %u\n",
-	     leaf_cpos, split_hash, insert_hash);
+	trace_ocfs2_dx_dir_rebalance_split(leaf_cpos, split_hash, insert_hash);
 
 	/*
 	 * We have to carefully order operations here. There are items
@@ -4355,8 +4338,8 @@ int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
 	unsigned int blocks_wanted = 1;
 	struct buffer_head *bh = NULL;
 
-	mlog(0, "getting ready to insert namelen %d into dir %llu\n",
-	     namelen, (unsigned long long)OCFS2_I(dir)->ip_blkno);
+	trace_ocfs2_prepare_dir_for_insert(
+		(unsigned long long)OCFS2_I(dir)->ip_blkno, namelen);
 
 	if (!namelen) {
 		ret = -EINVAL;
diff --git a/fs/ocfs2/dlm/Makefile b/fs/ocfs2/dlm/Makefile
index dcebf0d..c8a044e 100644
--- a/fs/ocfs2/dlm/Makefile
+++ b/fs/ocfs2/dlm/Makefile
@@ -1,4 +1,4 @@
-EXTRA_CFLAGS += -Ifs/ocfs2
+ccflags-y := -Ifs/ocfs2
 
 obj-$(CONFIG_OCFS2_FS_O2CB) += ocfs2_dlm.o
 
diff --git a/fs/ocfs2/dlm/dlmconvert.c b/fs/ocfs2/dlm/dlmconvert.c
index 9f30491..29a886d 100644
--- a/fs/ocfs2/dlm/dlmconvert.c
+++ b/fs/ocfs2/dlm/dlmconvert.c
@@ -128,8 +128,8 @@ static enum dlm_status __dlmconvert_master(struct dlm_ctxt *dlm,
 
 	assert_spin_locked(&res->spinlock);
 
-	mlog_entry("type=%d, convert_type=%d, new convert_type=%d\n",
-		   lock->ml.type, lock->ml.convert_type, type);
+	mlog(0, "type=%d, convert_type=%d, new convert_type=%d\n",
+	     lock->ml.type, lock->ml.convert_type, type);
 
 	spin_lock(&lock->spinlock);
 
@@ -353,7 +353,7 @@ static enum dlm_status dlm_send_remote_convert_request(struct dlm_ctxt *dlm,
 	struct kvec vec[2];
 	size_t veclen = 1;
 
-	mlog_entry("%.*s\n", res->lockname.len, res->lockname.name);
+	mlog(0, "%.*s\n", res->lockname.len, res->lockname.name);
 
 	memset(&convert, 0, sizeof(struct dlm_convert_lock));
 	convert.node_idx = dlm->node_num;
diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index 7e38a07..7540a49 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -188,7 +188,7 @@ struct dlm_lock_resource * __dlm_lookup_lockres_full(struct dlm_ctxt *dlm,
 	struct hlist_head *bucket;
 	struct hlist_node *list;
 
-	mlog_entry("%.*s\n", len, name);
+	mlog(0, "%.*s\n", len, name);
 
 	assert_spin_locked(&dlm->spinlock);
 
@@ -222,7 +222,7 @@ struct dlm_lock_resource * __dlm_lookup_lockres(struct dlm_ctxt *dlm,
 {
 	struct dlm_lock_resource *res = NULL;
 
-	mlog_entry("%.*s\n", len, name);
+	mlog(0, "%.*s\n", len, name);
 
 	assert_spin_locked(&dlm->spinlock);
 
@@ -531,7 +531,7 @@ static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data,
 	unsigned int node;
 	struct dlm_exit_domain *exit_msg = (struct dlm_exit_domain *) msg->buf;
 
-	mlog_entry("%p %u %p", msg, len, data);
+	mlog(0, "%p %u %p", msg, len, data);
 
 	if (!dlm_grab(dlm))
 		return 0;
@@ -926,9 +926,10 @@ static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data,
 }
 
 static int dlm_match_regions(struct dlm_ctxt *dlm,
-			     struct dlm_query_region *qr)
+			     struct dlm_query_region *qr,
+			     char *local, int locallen)
 {
-	char *local = NULL, *remote = qr->qr_regions;
+	char *remote = qr->qr_regions;
 	char *l, *r;
 	int localnr, i, j, foundit;
 	int status = 0;
@@ -957,13 +958,8 @@ static int dlm_match_regions(struct dlm_ctxt *dlm,
 		r += O2HB_MAX_REGION_NAME_LEN;
 	}
 
-	local = kmalloc(sizeof(qr->qr_regions), GFP_ATOMIC);
-	if (!local) {
-		status = -ENOMEM;
-		goto bail;
-	}
-
-	localnr = o2hb_get_all_regions(local, O2NM_MAX_REGIONS);
+	localnr = min(O2NM_MAX_REGIONS, locallen/O2HB_MAX_REGION_NAME_LEN);
+	localnr = o2hb_get_all_regions(local, (u8)localnr);
 
 	/* compare local regions with remote */
 	l = local;
@@ -1012,8 +1008,6 @@ static int dlm_match_regions(struct dlm_ctxt *dlm,
 	}
 
 bail:
-	kfree(local);
-
 	return status;
 }
 
@@ -1075,6 +1069,7 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len,
 {
 	struct dlm_query_region *qr;
 	struct dlm_ctxt *dlm = NULL;
+	char *local = NULL;
 	int status = 0;
 	int locked = 0;
 
@@ -1083,6 +1078,13 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len,
 	mlog(0, "Node %u queries hb regions on domain %s\n", qr->qr_node,
 	     qr->qr_domain);
 
+	/* buffer used in dlm_mast_regions() */
+	local = kmalloc(sizeof(qr->qr_regions), GFP_KERNEL);
+	if (!local) {
+		status = -ENOMEM;
+		goto bail;
+	}
+
 	status = -EINVAL;
 
 	spin_lock(&dlm_domain_lock);
@@ -1112,13 +1114,15 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len,
 		goto bail;
 	}
 
-	status = dlm_match_regions(dlm, qr);
+	status = dlm_match_regions(dlm, qr, local, sizeof(qr->qr_regions));
 
 bail:
 	if (locked)
 		spin_unlock(&dlm->spinlock);
 	spin_unlock(&dlm_domain_lock);
 
+	kfree(local);
+
 	return status;
 }
 
@@ -1553,7 +1557,7 @@ static int dlm_try_to_join_domain(struct dlm_ctxt *dlm)
 	struct domain_join_ctxt *ctxt;
 	enum dlm_query_join_response_code response = JOIN_DISALLOW;
 
-	mlog_entry("%p", dlm);
+	mlog(0, "%p", dlm);
 
 	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
 	if (!ctxt) {
diff --git a/fs/ocfs2/dlm/dlmlock.c b/fs/ocfs2/dlm/dlmlock.c
index 7009292..8d39e0fd6 100644
--- a/fs/ocfs2/dlm/dlmlock.c
+++ b/fs/ocfs2/dlm/dlmlock.c
@@ -128,7 +128,7 @@ static enum dlm_status dlmlock_master(struct dlm_ctxt *dlm,
 	int call_ast = 0, kick_thread = 0;
 	enum dlm_status status = DLM_NORMAL;
 
-	mlog_entry("type=%d\n", lock->ml.type);
+	mlog(0, "type=%d\n", lock->ml.type);
 
 	spin_lock(&res->spinlock);
 	/* if called from dlm_create_lock_handler, need to
@@ -227,8 +227,8 @@ static enum dlm_status dlmlock_remote(struct dlm_ctxt *dlm,
 	enum dlm_status status = DLM_DENIED;
 	int lockres_changed = 1;
 
-	mlog_entry("type=%d\n", lock->ml.type);
-	mlog(0, "lockres %.*s, flags = 0x%x\n", res->lockname.len,
+	mlog(0, "type=%d, lockres %.*s, flags = 0x%x\n",
+	     lock->ml.type, res->lockname.len,
 	     res->lockname.name, flags);
 
 	spin_lock(&res->spinlock);
@@ -308,8 +308,6 @@ static enum dlm_status dlm_send_remote_lock_request(struct dlm_ctxt *dlm,
 	int tmpret, status = 0;
 	enum dlm_status ret;
 
-	mlog_entry_void();
-
 	memset(&create, 0, sizeof(create));
 	create.node_idx = dlm->node_num;
 	create.requested_type = lock->ml.type;
@@ -477,8 +475,6 @@ int dlm_create_lock_handler(struct o2net_msg *msg, u32 len, void *data,
 
 	BUG_ON(!dlm);
 
-	mlog_entry_void();
-
 	if (!dlm_grab(dlm))
 		return DLM_REJECTED;
 
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 59f0f6b..9d67610 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -426,8 +426,6 @@ static void dlm_mle_release(struct kref *kref)
 	struct dlm_master_list_entry *mle;
 	struct dlm_ctxt *dlm;
 
-	mlog_entry_void();
-
 	mle = container_of(kref, struct dlm_master_list_entry, mle_refs);
 	dlm = mle->dlm;
 
@@ -3120,8 +3118,6 @@ static int dlm_add_migration_mle(struct dlm_ctxt *dlm,
 
 	*oldmle = NULL;
 
-	mlog_entry_void();
-
 	assert_spin_locked(&dlm->spinlock);
 	assert_spin_locked(&dlm->master_lock);
 
@@ -3261,7 +3257,7 @@ void dlm_clean_master_list(struct dlm_ctxt *dlm, u8 dead_node)
 	struct hlist_node *list;
 	unsigned int i;
 
-	mlog_entry("dlm=%s, dead node=%u\n", dlm->name, dead_node);
+	mlog(0, "dlm=%s, dead node=%u\n", dlm->name, dead_node);
 top:
 	assert_spin_locked(&dlm->spinlock);
 
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index aaaffbc..f1beb6f 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -727,7 +727,6 @@ static int dlm_remaster_locks(struct dlm_ctxt *dlm, u8 dead_node)
 	if (destroy)
 		dlm_destroy_recovery_area(dlm, dead_node);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -1496,9 +1495,9 @@ leave:
 			kfree(buf);
 		if (item)
 			kfree(item);
+		mlog_errno(ret);
 	}
 
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -1567,7 +1566,6 @@ leave:
 		dlm_lockres_put(res);
 	}
 	kfree(data);
-	mlog_exit(ret);
 }
 
 
@@ -1986,7 +1984,6 @@ leave:
 			dlm_lock_put(newlock);
 	}
 
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -2083,8 +2080,6 @@ static void dlm_finish_local_lockres_recovery(struct dlm_ctxt *dlm,
 	struct hlist_head *bucket;
 	struct dlm_lock_resource *res, *next;
 
-	mlog_entry_void();
-
 	assert_spin_locked(&dlm->spinlock);
 
 	list_for_each_entry_safe(res, next, &dlm->reco.resources, recovering) {
@@ -2607,8 +2602,6 @@ static int dlm_send_begin_reco_message(struct dlm_ctxt *dlm, u8 dead_node)
 	int nodenum;
 	int status;
 
-	mlog_entry("%u\n", dead_node);
-
 	mlog(0, "%s: dead node is %u\n", dlm->name, dead_node);
 
 	spin_lock(&dlm->spinlock);
diff --git a/fs/ocfs2/dlm/dlmunlock.c b/fs/ocfs2/dlm/dlmunlock.c
index 817287c..850aa7e 100644
--- a/fs/ocfs2/dlm/dlmunlock.c
+++ b/fs/ocfs2/dlm/dlmunlock.c
@@ -317,7 +317,7 @@ static enum dlm_status dlm_send_remote_unlock_request(struct dlm_ctxt *dlm,
 	struct kvec vec[2];
 	size_t veclen = 1;
 
-	mlog_entry("%.*s\n", res->lockname.len, res->lockname.name);
+	mlog(0, "%.*s\n", res->lockname.len, res->lockname.name);
 
 	if (owner == dlm->node_num) {
 		/* ended up trying to contact ourself.  this means
@@ -588,8 +588,6 @@ enum dlm_status dlmunlock(struct dlm_ctxt *dlm, struct dlm_lockstatus *lksb,
 	struct dlm_lock *lock = NULL;
 	int call_ast, is_master;
 
-	mlog_entry_void();
-
 	if (!lksb) {
 		dlm_error(DLM_BADARGS);
 		return DLM_BADARGS;
diff --git a/fs/ocfs2/dlmfs/Makefile b/fs/ocfs2/dlmfs/Makefile
index df69b48..f14be89 100644
--- a/fs/ocfs2/dlmfs/Makefile
+++ b/fs/ocfs2/dlmfs/Makefile
@@ -1,4 +1,4 @@
-EXTRA_CFLAGS += -Ifs/ocfs2
+ccflags-y := -Ifs/ocfs2
 
 obj-$(CONFIG_OCFS2_FS) += ocfs2_dlmfs.o
 
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index e8d94d7..7642d7c 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -64,7 +64,7 @@ struct ocfs2_mask_waiter {
 	unsigned long		mw_mask;
 	unsigned long		mw_goal;
 #ifdef CONFIG_OCFS2_FS_STATS
-	unsigned long long 	mw_lock_start;
+	ktime_t			mw_lock_start;
 #endif
 };
 
@@ -397,8 +397,6 @@ static void ocfs2_build_lock_name(enum ocfs2_lock_type type,
 {
 	int len;
 
-	mlog_entry_void();
-
 	BUG_ON(type >= OCFS2_NUM_LOCK_TYPES);
 
 	len = snprintf(name, OCFS2_LOCK_ID_MAX_LEN, "%c%s%016llx%08x",
@@ -408,8 +406,6 @@ static void ocfs2_build_lock_name(enum ocfs2_lock_type type,
 	BUG_ON(len != (OCFS2_LOCK_ID_MAX_LEN - 1));
 
 	mlog(0, "built lock resource with name: %s\n", name);
-
-	mlog_exit_void();
 }
 
 static DEFINE_SPINLOCK(ocfs2_dlm_tracking_lock);
@@ -435,44 +431,41 @@ static void ocfs2_remove_lockres_tracking(struct ocfs2_lock_res *res)
 #ifdef CONFIG_OCFS2_FS_STATS
 static void ocfs2_init_lock_stats(struct ocfs2_lock_res *res)
 {
-	res->l_lock_num_prmode = 0;
-	res->l_lock_num_prmode_failed = 0;
-	res->l_lock_total_prmode = 0;
-	res->l_lock_max_prmode = 0;
-	res->l_lock_num_exmode = 0;
-	res->l_lock_num_exmode_failed = 0;
-	res->l_lock_total_exmode = 0;
-	res->l_lock_max_exmode = 0;
 	res->l_lock_refresh = 0;
+	memset(&res->l_lock_prmode, 0, sizeof(struct ocfs2_lock_stats));
+	memset(&res->l_lock_exmode, 0, sizeof(struct ocfs2_lock_stats));
 }
 
 static void ocfs2_update_lock_stats(struct ocfs2_lock_res *res, int level,
 				    struct ocfs2_mask_waiter *mw, int ret)
 {
-	unsigned long long *num, *sum;
-	unsigned int *max, *failed;
-	struct timespec ts = current_kernel_time();
-	unsigned long long time = timespec_to_ns(&ts) - mw->mw_lock_start;
-
-	if (level == LKM_PRMODE) {
-		num = &res->l_lock_num_prmode;
-		sum = &res->l_lock_total_prmode;
-		max = &res->l_lock_max_prmode;
-		failed = &res->l_lock_num_prmode_failed;
-	} else if (level == LKM_EXMODE) {
-		num = &res->l_lock_num_exmode;
-		sum = &res->l_lock_total_exmode;
-		max = &res->l_lock_max_exmode;
-		failed = &res->l_lock_num_exmode_failed;
-	} else
+	u32 usec;
+	ktime_t kt;
+	struct ocfs2_lock_stats *stats;
+
+	if (level == LKM_PRMODE)
+		stats = &res->l_lock_prmode;
+	else if (level == LKM_EXMODE)
+		stats = &res->l_lock_exmode;
+	else
 		return;
 
-	(*num)++;
-	(*sum) += time;
-	if (time > *max)
-		*max = time;
+	kt = ktime_sub(ktime_get(), mw->mw_lock_start);
+	usec = ktime_to_us(kt);
+
+	stats->ls_gets++;
+	stats->ls_total += ktime_to_ns(kt);
+	/* overflow */
+	if (unlikely(stats->ls_gets) == 0) {
+		stats->ls_gets++;
+		stats->ls_total = ktime_to_ns(kt);
+	}
+
+	if (stats->ls_max < usec)
+		stats->ls_max = usec;
+
 	if (ret)
-		(*failed)++;
+		stats->ls_fail++;
 }
 
 static inline void ocfs2_track_lock_refresh(struct ocfs2_lock_res *lockres)
@@ -482,8 +475,7 @@ static inline void ocfs2_track_lock_refresh(struct ocfs2_lock_res *lockres)
 
 static inline void ocfs2_init_start_time(struct ocfs2_mask_waiter *mw)
 {
-	struct timespec ts = current_kernel_time();
-	mw->mw_lock_start = timespec_to_ns(&ts);
+	mw->mw_lock_start = ktime_get();
 }
 #else
 static inline void ocfs2_init_lock_stats(struct ocfs2_lock_res *res)
@@ -729,8 +721,6 @@ void ocfs2_refcount_lock_res_init(struct ocfs2_lock_res *lockres,
 
 void ocfs2_lock_res_free(struct ocfs2_lock_res *res)
 {
-	mlog_entry_void();
-
 	if (!(res->l_flags & OCFS2_LOCK_INITIALIZED))
 		return;
 
@@ -756,14 +746,11 @@ void ocfs2_lock_res_free(struct ocfs2_lock_res *res)
 	memset(&res->l_lksb, 0, sizeof(res->l_lksb));
 
 	res->l_flags = 0UL;
-	mlog_exit_void();
 }
 
 static inline void ocfs2_inc_holders(struct ocfs2_lock_res *lockres,
 				     int level)
 {
-	mlog_entry_void();
-
 	BUG_ON(!lockres);
 
 	switch(level) {
@@ -776,15 +763,11 @@ static inline void ocfs2_inc_holders(struct ocfs2_lock_res *lockres,
 	default:
 		BUG();
 	}
-
-	mlog_exit_void();
 }
 
 static inline void ocfs2_dec_holders(struct ocfs2_lock_res *lockres,
 				     int level)
 {
-	mlog_entry_void();
-
 	BUG_ON(!lockres);
 
 	switch(level) {
@@ -799,7 +782,6 @@ static inline void ocfs2_dec_holders(struct ocfs2_lock_res *lockres,
 	default:
 		BUG();
 	}
-	mlog_exit_void();
 }
 
 /* WARNING: This function lives in a world where the only three lock
@@ -846,8 +828,6 @@ static void lockres_clear_flags(struct ocfs2_lock_res *lockres,
 
 static inline void ocfs2_generic_handle_downconvert_action(struct ocfs2_lock_res *lockres)
 {
-	mlog_entry_void();
-
 	BUG_ON(!(lockres->l_flags & OCFS2_LOCK_BUSY));
 	BUG_ON(!(lockres->l_flags & OCFS2_LOCK_ATTACHED));
 	BUG_ON(!(lockres->l_flags & OCFS2_LOCK_BLOCKED));
@@ -860,14 +840,10 @@ static inline void ocfs2_generic_handle_downconvert_action(struct ocfs2_lock_res
 		lockres_clear_flags(lockres, OCFS2_LOCK_BLOCKED);
 	}
 	lockres_clear_flags(lockres, OCFS2_LOCK_BUSY);
-
-	mlog_exit_void();
 }
 
 static inline void ocfs2_generic_handle_convert_action(struct ocfs2_lock_res *lockres)
 {
-	mlog_entry_void();
-
 	BUG_ON(!(lockres->l_flags & OCFS2_LOCK_BUSY));
 	BUG_ON(!(lockres->l_flags & OCFS2_LOCK_ATTACHED));
 
@@ -889,14 +865,10 @@ static inline void ocfs2_generic_handle_convert_action(struct ocfs2_lock_res *lo
 	lockres_or_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);
 
 	lockres_clear_flags(lockres, OCFS2_LOCK_BUSY);
-
-	mlog_exit_void();
 }
 
 static inline void ocfs2_generic_handle_attach_action(struct ocfs2_lock_res *lockres)
 {
-	mlog_entry_void();
-
 	BUG_ON((!(lockres->l_flags & OCFS2_LOCK_BUSY)));
 	BUG_ON(lockres->l_flags & OCFS2_LOCK_ATTACHED);
 
@@ -908,15 +880,12 @@ static inline void ocfs2_generic_handle_attach_action(struct ocfs2_lock_res *loc
 	lockres->l_level = lockres->l_requested;
 	lockres_or_flags(lockres, OCFS2_LOCK_ATTACHED);
 	lockres_clear_flags(lockres, OCFS2_LOCK_BUSY);
-
-	mlog_exit_void();
 }
 
 static int ocfs2_generic_handle_bast(struct ocfs2_lock_res *lockres,
 				     int level)
 {
 	int needs_downconvert = 0;
-	mlog_entry_void();
 
 	assert_spin_locked(&lockres->l_lock);
 
@@ -938,8 +907,7 @@ static int ocfs2_generic_handle_bast(struct ocfs2_lock_res *lockres,
 
 	if (needs_downconvert)
 		lockres_or_flags(lockres, OCFS2_LOCK_BLOCKED);
-
-	mlog_exit(needs_downconvert);
+	mlog(0, "needs_downconvert = %d\n", needs_downconvert);
 	return needs_downconvert;
 }
 
@@ -1151,8 +1119,6 @@ static void ocfs2_unlock_ast(struct ocfs2_dlm_lksb *lksb, int error)
 	struct ocfs2_lock_res *lockres = ocfs2_lksb_to_lock_res(lksb);
 	unsigned long flags;
 
-	mlog_entry_void();
-
 	mlog(ML_BASTS, "UNLOCK AST fired for lockres %s, action = %d\n",
 	     lockres->l_name, lockres->l_unlock_action);
 
@@ -1162,7 +1128,6 @@ static void ocfs2_unlock_ast(struct ocfs2_dlm_lksb *lksb, int error)
 		     "unlock_action %d\n", error, lockres->l_name,
 		     lockres->l_unlock_action);
 		spin_unlock_irqrestore(&lockres->l_lock, flags);
-		mlog_exit_void();
 		return;
 	}
 
@@ -1186,8 +1151,6 @@ static void ocfs2_unlock_ast(struct ocfs2_dlm_lksb *lksb, int error)
 	lockres->l_unlock_action = OCFS2_UNLOCK_INVALID;
 	wake_up(&lockres->l_event);
 	spin_unlock_irqrestore(&lockres->l_lock, flags);
-
-	mlog_exit_void();
 }
 
 /*
@@ -1233,7 +1196,6 @@ static inline void ocfs2_recover_from_dlm_error(struct ocfs2_lock_res *lockres,
 {
 	unsigned long flags;
 
-	mlog_entry_void();
 	spin_lock_irqsave(&lockres->l_lock, flags);
 	lockres_clear_flags(lockres, OCFS2_LOCK_BUSY);
 	lockres_clear_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);
@@ -1244,7 +1206,6 @@ static inline void ocfs2_recover_from_dlm_error(struct ocfs2_lock_res *lockres,
 	spin_unlock_irqrestore(&lockres->l_lock, flags);
 
 	wake_up(&lockres->l_event);
-	mlog_exit_void();
 }
 
 /* Note: If we detect another process working on the lock (i.e.,
@@ -1260,8 +1221,6 @@ static int ocfs2_lock_create(struct ocfs2_super *osb,
 	unsigned long flags;
 	unsigned int gen;
 
-	mlog_entry_void();
-
 	mlog(0, "lock %s, level = %d, flags = %u\n", lockres->l_name, level,
 	     dlm_flags);
 
@@ -1293,7 +1252,6 @@ static int ocfs2_lock_create(struct ocfs2_super *osb,
 	mlog(0, "lock %s, return from ocfs2_dlm_lock\n", lockres->l_name);
 
 bail:
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -1416,8 +1374,6 @@ static int __ocfs2_cluster_lock(struct ocfs2_super *osb,
 	unsigned int gen;
 	int noqueue_attempted = 0;
 
-	mlog_entry_void();
-
 	ocfs2_init_mask_waiter(&mw);
 
 	if (lockres->l_ops->flags & LOCK_TYPE_USES_LVB)
@@ -1583,7 +1539,6 @@ out:
 				caller_ip);
 	}
 #endif
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -1605,7 +1560,6 @@ static void __ocfs2_cluster_unlock(struct ocfs2_super *osb,
 {
 	unsigned long flags;
 
-	mlog_entry_void();
 	spin_lock_irqsave(&lockres->l_lock, flags);
 	ocfs2_dec_holders(lockres, level);
 	ocfs2_downconvert_on_unlock(osb, lockres);
@@ -1614,7 +1568,6 @@ static void __ocfs2_cluster_unlock(struct ocfs2_super *osb,
 	if (lockres->l_lockdep_map.key != NULL)
 		rwsem_release(&lockres->l_lockdep_map, 1, caller_ip);
 #endif
-	mlog_exit_void();
 }
 
 static int ocfs2_create_new_lock(struct ocfs2_super *osb,
@@ -1648,8 +1601,6 @@ int ocfs2_create_new_inode_locks(struct inode *inode)
 	BUG_ON(!inode);
 	BUG_ON(!ocfs2_inode_is_new(inode));
 
-	mlog_entry_void();
-
 	mlog(0, "Inode %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno);
 
 	/* NOTE: That we don't increment any of the holder counts, nor
@@ -1683,7 +1634,6 @@ int ocfs2_create_new_inode_locks(struct inode *inode)
 	}
 
 bail:
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -1695,16 +1645,12 @@ int ocfs2_rw_lock(struct inode *inode, int write)
 
 	BUG_ON(!inode);
 
-	mlog_entry_void();
-
 	mlog(0, "inode %llu take %s RW lock\n",
 	     (unsigned long long)OCFS2_I(inode)->ip_blkno,
 	     write ? "EXMODE" : "PRMODE");
 
-	if (ocfs2_mount_local(osb)) {
-		mlog_exit(0);
+	if (ocfs2_mount_local(osb))
 		return 0;
-	}
 
 	lockres = &OCFS2_I(inode)->ip_rw_lockres;
 
@@ -1715,7 +1661,6 @@ int ocfs2_rw_lock(struct inode *inode, int write)
 	if (status < 0)
 		mlog_errno(status);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -1725,16 +1670,12 @@ void ocfs2_rw_unlock(struct inode *inode, int write)
 	struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_rw_lockres;
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 
-	mlog_entry_void();
-
 	mlog(0, "inode %llu drop %s RW lock\n",
 	     (unsigned long long)OCFS2_I(inode)->ip_blkno,
 	     write ? "EXMODE" : "PRMODE");
 
 	if (!ocfs2_mount_local(osb))
 		ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres, level);
-
-	mlog_exit_void();
 }
 
 /*
@@ -1748,8 +1689,6 @@ int ocfs2_open_lock(struct inode *inode)
 
 	BUG_ON(!inode);
 
-	mlog_entry_void();
-
 	mlog(0, "inode %llu take PRMODE open lock\n",
 	     (unsigned long long)OCFS2_I(inode)->ip_blkno);
 
@@ -1764,7 +1703,6 @@ int ocfs2_open_lock(struct inode *inode)
 		mlog_errno(status);
 
 out:
-	mlog_exit(status);
 	return status;
 }
 
@@ -1776,8 +1714,6 @@ int ocfs2_try_open_lock(struct inode *inode, int write)
 
 	BUG_ON(!inode);
 
-	mlog_entry_void();
-
 	mlog(0, "inode %llu try to take %s open lock\n",
 	     (unsigned long long)OCFS2_I(inode)->ip_blkno,
 	     write ? "EXMODE" : "PRMODE");
@@ -1799,7 +1735,6 @@ int ocfs2_try_open_lock(struct inode *inode, int write)
 				    level, DLM_LKF_NOQUEUE, 0);
 
 out:
-	mlog_exit(status);
 	return status;
 }
 
@@ -1811,8 +1746,6 @@ void ocfs2_open_unlock(struct inode *inode)
 	struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_open_lockres;
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 
-	mlog_entry_void();
-
 	mlog(0, "inode %llu drop open lock\n",
 	     (unsigned long long)OCFS2_I(inode)->ip_blkno);
 
@@ -1827,7 +1760,7 @@ void ocfs2_open_unlock(struct inode *inode)
 				     DLM_LOCK_EX);
 
 out:
-	mlog_exit_void();
+	return;
 }
 
 static int ocfs2_flock_handle_signal(struct ocfs2_lock_res *lockres,
@@ -2043,8 +1976,6 @@ static void ocfs2_downconvert_on_unlock(struct ocfs2_super *osb,
 {
 	int kick = 0;
 
-	mlog_entry_void();
-
 	/* If we know that another node is waiting on our lock, kick
 	 * the downconvert thread * pre-emptively when we reach a release
 	 * condition. */
@@ -2065,8 +1996,6 @@ static void ocfs2_downconvert_on_unlock(struct ocfs2_super *osb,
 
 	if (kick)
 		ocfs2_wake_downconvert_thread(osb);
-
-	mlog_exit_void();
 }
 
 #define OCFS2_SEC_BITS   34
@@ -2095,8 +2024,6 @@ static void __ocfs2_stuff_meta_lvb(struct inode *inode)
 	struct ocfs2_lock_res *lockres = &oi->ip_inode_lockres;
 	struct ocfs2_meta_lvb *lvb;
 
-	mlog_entry_void();
-
 	lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
 
 	/*
@@ -2128,8 +2055,6 @@ static void __ocfs2_stuff_meta_lvb(struct inode *inode)
 
 out:
 	mlog_meta_lvb(0, lockres);
-
-	mlog_exit_void();
 }
 
 static void ocfs2_unpack_timespec(struct timespec *spec,
@@ -2145,8 +2070,6 @@ static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
 	struct ocfs2_lock_res *lockres = &oi->ip_inode_lockres;
 	struct ocfs2_meta_lvb *lvb;
 
-	mlog_entry_void();
-
 	mlog_meta_lvb(0, lockres);
 
 	lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
@@ -2177,8 +2100,6 @@ static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
 	ocfs2_unpack_timespec(&inode->i_ctime,
 			      be64_to_cpu(lvb->lvb_ictime_packed));
 	spin_unlock(&oi->ip_lock);
-
-	mlog_exit_void();
 }
 
 static inline int ocfs2_meta_lvb_is_trustable(struct inode *inode,
@@ -2205,8 +2126,6 @@ static int ocfs2_should_refresh_lock_res(struct ocfs2_lock_res *lockres)
 	unsigned long flags;
 	int status = 0;
 
-	mlog_entry_void();
-
 refresh_check:
 	spin_lock_irqsave(&lockres->l_lock, flags);
 	if (!(lockres->l_flags & OCFS2_LOCK_NEEDS_REFRESH)) {
@@ -2227,7 +2146,7 @@ refresh_check:
 
 	status = 1;
 bail:
-	mlog_exit(status);
+	mlog(0, "status %d\n", status);
 	return status;
 }
 
@@ -2237,7 +2156,6 @@ static inline void ocfs2_complete_lock_res_refresh(struct ocfs2_lock_res *lockre
 						   int status)
 {
 	unsigned long flags;
-	mlog_entry_void();
 
 	spin_lock_irqsave(&lockres->l_lock, flags);
 	lockres_clear_flags(lockres, OCFS2_LOCK_REFRESHING);
@@ -2246,8 +2164,6 @@ static inline void ocfs2_complete_lock_res_refresh(struct ocfs2_lock_res *lockre
 	spin_unlock_irqrestore(&lockres->l_lock, flags);
 
 	wake_up(&lockres->l_event);
-
-	mlog_exit_void();
 }
 
 /* may or may not return a bh if it went to disk. */
@@ -2260,8 +2176,6 @@ static int ocfs2_inode_lock_update(struct inode *inode,
 	struct ocfs2_dinode *fe;
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 
-	mlog_entry_void();
-
 	if (ocfs2_mount_local(osb))
 		goto bail;
 
@@ -2330,7 +2244,6 @@ static int ocfs2_inode_lock_update(struct inode *inode,
 bail_refresh:
 	ocfs2_complete_lock_res_refresh(lockres, status);
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -2374,8 +2287,6 @@ int ocfs2_inode_lock_full_nested(struct inode *inode,
 
 	BUG_ON(!inode);
 
-	mlog_entry_void();
-
 	mlog(0, "inode %llu, take %s META lock\n",
 	     (unsigned long long)OCFS2_I(inode)->ip_blkno,
 	     ex ? "EXMODE" : "PRMODE");
@@ -2467,7 +2378,6 @@ bail:
 	if (local_bh)
 		brelse(local_bh);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -2517,7 +2427,6 @@ int ocfs2_inode_lock_atime(struct inode *inode,
 {
 	int ret;
 
-	mlog_entry_void();
 	ret = ocfs2_inode_lock(inode, NULL, 0);
 	if (ret < 0) {
 		mlog_errno(ret);
@@ -2545,7 +2454,6 @@ int ocfs2_inode_lock_atime(struct inode *inode,
 	} else
 		*level = 0;
 
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -2556,8 +2464,6 @@ void ocfs2_inode_unlock(struct inode *inode,
 	struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_inode_lockres;
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 
-	mlog_entry_void();
-
 	mlog(0, "inode %llu drop %s META lock\n",
 	     (unsigned long long)OCFS2_I(inode)->ip_blkno,
 	     ex ? "EXMODE" : "PRMODE");
@@ -2565,8 +2471,6 @@ void ocfs2_inode_unlock(struct inode *inode,
 	if (!ocfs2_is_hard_readonly(OCFS2_SB(inode->i_sb)) &&
 	    !ocfs2_mount_local(osb))
 		ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres, level);
-
-	mlog_exit_void();
 }
 
 int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno)
@@ -2617,8 +2521,6 @@ int ocfs2_super_lock(struct ocfs2_super *osb,
 	int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
 	struct ocfs2_lock_res *lockres = &osb->osb_super_lockres;
 
-	mlog_entry_void();
-
 	if (ocfs2_is_hard_readonly(osb))
 		return -EROFS;
 
@@ -2650,7 +2552,6 @@ int ocfs2_super_lock(struct ocfs2_super *osb,
 		ocfs2_track_lock_refresh(lockres);
 	}
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -2869,8 +2770,15 @@ static void *ocfs2_dlm_seq_next(struct seq_file *m, void *v, loff_t *pos)
 	return iter;
 }
 
-/* So that debugfs.ocfs2 can determine which format is being used */
-#define OCFS2_DLM_DEBUG_STR_VERSION 2
+/*
+ * Version is used by debugfs.ocfs2 to determine the format being used
+ *
+ * New in version 2
+ *	- Lock stats printed
+ * New in version 3
+ *	- Max time in lock stats is in usecs (instead of nsecs)
+ */
+#define OCFS2_DLM_DEBUG_STR_VERSION 3
 static int ocfs2_dlm_seq_show(struct seq_file *m, void *v)
 {
 	int i;
@@ -2912,18 +2820,18 @@ static int ocfs2_dlm_seq_show(struct seq_file *m, void *v)
 		seq_printf(m, "0x%x\t", lvb[i]);
 
 #ifdef CONFIG_OCFS2_FS_STATS
-# define lock_num_prmode(_l)		(_l)->l_lock_num_prmode
-# define lock_num_exmode(_l)		(_l)->l_lock_num_exmode
-# define lock_num_prmode_failed(_l)	(_l)->l_lock_num_prmode_failed
-# define lock_num_exmode_failed(_l)	(_l)->l_lock_num_exmode_failed
-# define lock_total_prmode(_l)		(_l)->l_lock_total_prmode
-# define lock_total_exmode(_l)		(_l)->l_lock_total_exmode
-# define lock_max_prmode(_l)		(_l)->l_lock_max_prmode
-# define lock_max_exmode(_l)		(_l)->l_lock_max_exmode
-# define lock_refresh(_l)		(_l)->l_lock_refresh
+# define lock_num_prmode(_l)		((_l)->l_lock_prmode.ls_gets)
+# define lock_num_exmode(_l)		((_l)->l_lock_exmode.ls_gets)
+# define lock_num_prmode_failed(_l)	((_l)->l_lock_prmode.ls_fail)
+# define lock_num_exmode_failed(_l)	((_l)->l_lock_exmode.ls_fail)
+# define lock_total_prmode(_l)		((_l)->l_lock_prmode.ls_total)
+# define lock_total_exmode(_l)		((_l)->l_lock_exmode.ls_total)
+# define lock_max_prmode(_l)		((_l)->l_lock_prmode.ls_max)
+# define lock_max_exmode(_l)		((_l)->l_lock_exmode.ls_max)
+# define lock_refresh(_l)		((_l)->l_lock_refresh)
 #else
-# define lock_num_prmode(_l)		(0ULL)
-# define lock_num_exmode(_l)		(0ULL)
+# define lock_num_prmode(_l)		(0)
+# define lock_num_exmode(_l)		(0)
 # define lock_num_prmode_failed(_l)	(0)
 # define lock_num_exmode_failed(_l)	(0)
 # define lock_total_prmode(_l)		(0ULL)
@@ -2933,8 +2841,8 @@ static int ocfs2_dlm_seq_show(struct seq_file *m, void *v)
 # define lock_refresh(_l)		(0)
 #endif
 	/* The following seq_print was added in version 2 of this output */
-	seq_printf(m, "%llu\t"
-		   "%llu\t"
+	seq_printf(m, "%u\t"
+		   "%u\t"
 		   "%u\t"
 		   "%u\t"
 		   "%llu\t"
@@ -3054,8 +2962,6 @@ int ocfs2_dlm_init(struct ocfs2_super *osb)
 	int status = 0;
 	struct ocfs2_cluster_connection *conn = NULL;
 
-	mlog_entry_void();
-
 	if (ocfs2_mount_local(osb)) {
 		osb->node_num = 0;
 		goto local;
@@ -3112,15 +3018,12 @@ bail:
 			kthread_stop(osb->dc_task);
 	}
 
-	mlog_exit(status);
 	return status;
 }
 
 void ocfs2_dlm_shutdown(struct ocfs2_super *osb,
 			int hangup_pending)
 {
-	mlog_entry_void();
-
 	ocfs2_drop_osb_locks(osb);
 
 	/*
@@ -3143,8 +3046,6 @@ void ocfs2_dlm_shutdown(struct ocfs2_super *osb,
 	osb->cconn = NULL;
 
 	ocfs2_dlm_shutdown_debug(osb);
-
-	mlog_exit_void();
 }
 
 static int ocfs2_drop_lock(struct ocfs2_super *osb,
@@ -3226,7 +3127,6 @@ static int ocfs2_drop_lock(struct ocfs2_super *osb,
 
 	ocfs2_wait_on_busy_lock(lockres);
 out:
-	mlog_exit(0);
 	return 0;
 }
 
@@ -3284,8 +3184,6 @@ int ocfs2_drop_inode_locks(struct inode *inode)
 {
 	int status, err;
 
-	mlog_entry_void();
-
 	/* No need to call ocfs2_mark_lockres_freeing here -
 	 * ocfs2_clear_inode has done it for us. */
 
@@ -3310,7 +3208,6 @@ int ocfs2_drop_inode_locks(struct inode *inode)
 	if (err < 0 && !status)
 		status = err;
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -3352,8 +3249,6 @@ static int ocfs2_downconvert_lock(struct ocfs2_super *osb,
 	int ret;
 	u32 dlm_flags = DLM_LKF_CONVERT;
 
-	mlog_entry_void();
-
 	mlog(ML_BASTS, "lockres %s, level %d => %d\n", lockres->l_name,
 	     lockres->l_level, new_level);
 
@@ -3375,7 +3270,6 @@ static int ocfs2_downconvert_lock(struct ocfs2_super *osb,
 
 	ret = 0;
 bail:
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -3385,8 +3279,6 @@ static int ocfs2_prepare_cancel_convert(struct ocfs2_super *osb,
 {
 	assert_spin_locked(&lockres->l_lock);
 
-	mlog_entry_void();
-
 	if (lockres->l_unlock_action == OCFS2_UNLOCK_CANCEL_CONVERT) {
 		/* If we're already trying to cancel a lock conversion
 		 * then just drop the spinlock and allow the caller to
@@ -3416,8 +3308,6 @@ static int ocfs2_cancel_convert(struct ocfs2_super *osb,
 {
 	int ret;
 
-	mlog_entry_void();
-
 	ret = ocfs2_dlm_unlock(osb->cconn, &lockres->l_lksb,
 			       DLM_LKF_CANCEL);
 	if (ret) {
@@ -3427,7 +3317,6 @@ static int ocfs2_cancel_convert(struct ocfs2_super *osb,
 
 	mlog(ML_BASTS, "lockres %s\n", lockres->l_name);
 
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -3443,8 +3332,6 @@ static int ocfs2_unblock_lock(struct ocfs2_super *osb,
 	int set_lvb = 0;
 	unsigned int gen;
 
-	mlog_entry_void();
-
 	spin_lock_irqsave(&lockres->l_lock, flags);
 
 recheck:
@@ -3619,14 +3506,14 @@ downconvert:
 				     gen);
 
 leave:
-	mlog_exit(ret);
+	if (ret)
+		mlog_errno(ret);
 	return ret;
 
 leave_requeue:
 	spin_unlock_irqrestore(&lockres->l_lock, flags);
 	ctl->requeue = 1;
 
-	mlog_exit(0);
 	return 0;
 }
 
@@ -3859,8 +3746,6 @@ static void ocfs2_set_qinfo_lvb(struct ocfs2_lock_res *lockres)
 	struct mem_dqinfo *info = sb_dqinfo(oinfo->dqi_gi.dqi_sb,
 					    oinfo->dqi_gi.dqi_type);
 
-	mlog_entry_void();
-
 	lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
 	lvb->lvb_version = OCFS2_QINFO_LVB_VERSION;
 	lvb->lvb_bgrace = cpu_to_be32(info->dqi_bgrace);
@@ -3869,8 +3754,6 @@ static void ocfs2_set_qinfo_lvb(struct ocfs2_lock_res *lockres)
 	lvb->lvb_blocks = cpu_to_be32(oinfo->dqi_gi.dqi_blocks);
 	lvb->lvb_free_blk = cpu_to_be32(oinfo->dqi_gi.dqi_free_blk);
 	lvb->lvb_free_entry = cpu_to_be32(oinfo->dqi_gi.dqi_free_entry);
-
-	mlog_exit_void();
 }
 
 void ocfs2_qinfo_unlock(struct ocfs2_mem_dqinfo *oinfo, int ex)
@@ -3879,10 +3762,8 @@ void ocfs2_qinfo_unlock(struct ocfs2_mem_dqinfo *oinfo, int ex)
 	struct ocfs2_super *osb = OCFS2_SB(oinfo->dqi_gi.dqi_sb);
 	int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
 
-	mlog_entry_void();
 	if (!ocfs2_is_hard_readonly(osb) && !ocfs2_mount_local(osb))
 		ocfs2_cluster_unlock(osb, lockres, level);
-	mlog_exit_void();
 }
 
 static int ocfs2_refresh_qinfo(struct ocfs2_mem_dqinfo *oinfo)
@@ -3937,8 +3818,6 @@ int ocfs2_qinfo_lock(struct ocfs2_mem_dqinfo *oinfo, int ex)
 	int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
 	int status = 0;
 
-	mlog_entry_void();
-
 	/* On RO devices, locking really isn't needed... */
 	if (ocfs2_is_hard_readonly(osb)) {
 		if (ex)
@@ -3961,7 +3840,6 @@ int ocfs2_qinfo_lock(struct ocfs2_mem_dqinfo *oinfo, int ex)
 		ocfs2_qinfo_unlock(oinfo, ex);
 	ocfs2_complete_lock_res_refresh(lockres, status);
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -4007,8 +3885,6 @@ static void ocfs2_process_blocked_lock(struct ocfs2_super *osb,
 	 * considered valid until we remove the OCFS2_LOCK_QUEUED
 	 * flag. */
 
-	mlog_entry_void();
-
 	BUG_ON(!lockres);
 	BUG_ON(!lockres->l_ops);
 
@@ -4042,15 +3918,11 @@ unqueue:
 	if (ctl.unblock_action != UNBLOCK_CONTINUE
 	    && lockres->l_ops->post_unlock)
 		lockres->l_ops->post_unlock(osb, lockres);
-
-	mlog_exit_void();
 }
 
 static void ocfs2_schedule_blocked_lock(struct ocfs2_super *osb,
 					struct ocfs2_lock_res *lockres)
 {
-	mlog_entry_void();
-
 	assert_spin_locked(&lockres->l_lock);
 
 	if (lockres->l_flags & OCFS2_LOCK_FREEING) {
@@ -4071,8 +3943,6 @@ static void ocfs2_schedule_blocked_lock(struct ocfs2_super *osb,
 		osb->blocked_lock_count++;
 	}
 	spin_unlock(&osb->dc_task_lock);
-
-	mlog_exit_void();
 }
 
 static void ocfs2_downconvert_thread_do_work(struct ocfs2_super *osb)
@@ -4080,8 +3950,6 @@ static void ocfs2_downconvert_thread_do_work(struct ocfs2_super *osb)
 	unsigned long processed;
 	struct ocfs2_lock_res *lockres;
 
-	mlog_entry_void();
-
 	spin_lock(&osb->dc_task_lock);
 	/* grab this early so we know to try again if a state change and
 	 * wake happens part-way through our work  */
@@ -4105,8 +3973,6 @@ static void ocfs2_downconvert_thread_do_work(struct ocfs2_super *osb)
 		spin_lock(&osb->dc_task_lock);
 	}
 	spin_unlock(&osb->dc_task_lock);
-
-	mlog_exit_void();
 }
 
 static int ocfs2_downconvert_thread_lists_empty(struct ocfs2_super *osb)
diff --git a/fs/ocfs2/export.c b/fs/ocfs2/export.c
index 254652a..745db42 100644
--- a/fs/ocfs2/export.c
+++ b/fs/ocfs2/export.c
@@ -26,7 +26,6 @@
 #include <linux/fs.h>
 #include <linux/types.h>
 
-#define MLOG_MASK_PREFIX ML_EXPORT
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -40,6 +39,7 @@
 
 #include "buffer_head_io.h"
 #include "suballoc.h"
+#include "ocfs2_trace.h"
 
 struct ocfs2_inode_handle
 {
@@ -56,10 +56,9 @@ static struct dentry *ocfs2_get_dentry(struct super_block *sb,
 	int status, set;
 	struct dentry *result;
 
-	mlog_entry("(0x%p, 0x%p)\n", sb, handle);
+	trace_ocfs2_get_dentry_begin(sb, handle, (unsigned long long)blkno);
 
 	if (blkno == 0) {
-		mlog(0, "nfs wants inode with blkno: 0\n");
 		result = ERR_PTR(-ESTALE);
 		goto bail;
 	}
@@ -83,6 +82,7 @@ static struct dentry *ocfs2_get_dentry(struct super_block *sb,
 	}
 
 	status = ocfs2_test_inode_bit(osb, blkno, &set);
+	trace_ocfs2_get_dentry_test_bit(status, set);
 	if (status < 0) {
 		if (status == -EINVAL) {
 			/*
@@ -90,18 +90,14 @@ static struct dentry *ocfs2_get_dentry(struct super_block *sb,
 			 * as an inode, we return -ESTALE to be
 			 * nice
 			 */
-			mlog(0, "test inode bit failed %d\n", status);
 			status = -ESTALE;
-		} else {
+		} else
 			mlog(ML_ERROR, "test inode bit failed %d\n", status);
-		}
 		goto unlock_nfs_sync;
 	}
 
 	/* If the inode allocator bit is clear, this inode must be stale */
 	if (!set) {
-		mlog(0, "inode %llu suballoc bit is clear\n",
-		     (unsigned long long)blkno);
 		status = -ESTALE;
 		goto unlock_nfs_sync;
 	}
@@ -114,8 +110,8 @@ unlock_nfs_sync:
 check_err:
 	if (status < 0) {
 		if (status == -ESTALE) {
-			mlog(0, "stale inode ino: %llu generation: %u\n",
-			     (unsigned long long)blkno, handle->ih_generation);
+			trace_ocfs2_get_dentry_stale((unsigned long long)blkno,
+						     handle->ih_generation);
 		}
 		result = ERR_PTR(status);
 		goto bail;
@@ -130,8 +126,9 @@ check_err:
 check_gen:
 	if (handle->ih_generation != inode->i_generation) {
 		iput(inode);
-		mlog(0, "stale inode ino: %llu generation: %u\n",
-		     (unsigned long long)blkno, handle->ih_generation);
+		trace_ocfs2_get_dentry_generation((unsigned long long)blkno,
+						  handle->ih_generation,
+						  inode->i_generation);
 		result = ERR_PTR(-ESTALE);
 		goto bail;
 	}
@@ -141,7 +138,7 @@ check_gen:
 		mlog_errno(PTR_ERR(result));
 
 bail:
-	mlog_exit_ptr(result);
+	trace_ocfs2_get_dentry_end(result);
 	return result;
 }
 
@@ -152,11 +149,8 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
 	struct dentry *parent;
 	struct inode *dir = child->d_inode;
 
-	mlog_entry("(0x%p, '%.*s')\n", child,
-		   child->d_name.len, child->d_name.name);
-
-	mlog(0, "find parent of directory %llu\n",
-	     (unsigned long long)OCFS2_I(dir)->ip_blkno);
+	trace_ocfs2_get_parent(child, child->d_name.len, child->d_name.name,
+			       (unsigned long long)OCFS2_I(dir)->ip_blkno);
 
 	status = ocfs2_inode_lock(dir, NULL, 0);
 	if (status < 0) {
@@ -178,7 +172,7 @@ bail_unlock:
 	ocfs2_inode_unlock(dir, 0);
 
 bail:
-	mlog_exit_ptr(parent);
+	trace_ocfs2_get_parent_end(parent);
 
 	return parent;
 }
@@ -193,9 +187,9 @@ static int ocfs2_encode_fh(struct dentry *dentry, u32 *fh_in, int *max_len,
 	u32 generation;
 	__le32 *fh = (__force __le32 *) fh_in;
 
-	mlog_entry("(0x%p, '%.*s', 0x%p, %d, %d)\n", dentry,
-		   dentry->d_name.len, dentry->d_name.name,
-		   fh, len, connectable);
+	trace_ocfs2_encode_fh_begin(dentry, dentry->d_name.len,
+				    dentry->d_name.name,
+				    fh, len, connectable);
 
 	if (connectable && (len < 6)) {
 		*max_len = 6;
@@ -210,8 +204,7 @@ static int ocfs2_encode_fh(struct dentry *dentry, u32 *fh_in, int *max_len,
 	blkno = OCFS2_I(inode)->ip_blkno;
 	generation = inode->i_generation;
 
-	mlog(0, "Encoding fh: blkno: %llu, generation: %u\n",
-	     (unsigned long long)blkno, generation);
+	trace_ocfs2_encode_fh_self((unsigned long long)blkno, generation);
 
 	len = 3;
 	fh[0] = cpu_to_le32((u32)(blkno >> 32));
@@ -236,14 +229,14 @@ static int ocfs2_encode_fh(struct dentry *dentry, u32 *fh_in, int *max_len,
 		len = 6;
 		type = 2;
 
-		mlog(0, "Encoding parent: blkno: %llu, generation: %u\n",
-		     (unsigned long long)blkno, generation);
+		trace_ocfs2_encode_fh_parent((unsigned long long)blkno,
+					     generation);
 	}
 
 	*max_len = len;
 
 bail:
-	mlog_exit(type);
+	trace_ocfs2_encode_fh_type(type);
 	return type;
 }
 
diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index 09e3fdf..23457b4 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -28,7 +28,6 @@
 #include <linux/types.h>
 #include <linux/fiemap.h>
 
-#define MLOG_MASK_PREFIX ML_EXTENT_MAP
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -39,6 +38,7 @@
 #include "inode.h"
 #include "super.h"
 #include "symlink.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -841,10 +841,9 @@ int ocfs2_read_virt_blocks(struct inode *inode, u64 v_block, int nr,
 	u64 p_block, p_count;
 	int i, count, done = 0;
 
-	mlog_entry("(inode = %p, v_block = %llu, nr = %d, bhs = %p, "
-		   "flags = %x, validate = %p)\n",
-		   inode, (unsigned long long)v_block, nr, bhs, flags,
-		   validate);
+	trace_ocfs2_read_virt_blocks(
+	     inode, (unsigned long long)v_block, nr, bhs, flags,
+	     validate);
 
 	if (((v_block + nr - 1) << inode->i_sb->s_blocksize_bits) >=
 	    i_size_read(inode)) {
@@ -897,7 +896,6 @@ int ocfs2_read_virt_blocks(struct inode *inode, u64 v_block, int nr,
 	}
 
 out:
-	mlog_exit(rc);
 	return rc;
 }
 
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index a665195..41565ae 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -38,7 +38,6 @@
 #include <linux/quotaops.h>
 #include <linux/blkdev.h>
 
-#define MLOG_MASK_PREFIX ML_INODE
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -61,6 +60,7 @@
 #include "acl.h"
 #include "quota.h"
 #include "refcounttree.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -99,8 +99,10 @@ static int ocfs2_file_open(struct inode *inode, struct file *file)
 	int mode = file->f_flags;
 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
 
-	mlog_entry("(0x%p, 0x%p, '%.*s')\n", inode, file,
-		   file->f_path.dentry->d_name.len, file->f_path.dentry->d_name.name);
+	trace_ocfs2_file_open(inode, file, file->f_path.dentry,
+			      (unsigned long long)OCFS2_I(inode)->ip_blkno,
+			      file->f_path.dentry->d_name.len,
+			      file->f_path.dentry->d_name.name, mode);
 
 	if (file->f_mode & FMODE_WRITE)
 		dquot_initialize(inode);
@@ -135,7 +137,6 @@ static int ocfs2_file_open(struct inode *inode, struct file *file)
 	}
 
 leave:
-	mlog_exit(status);
 	return status;
 }
 
@@ -143,19 +144,19 @@ static int ocfs2_file_release(struct inode *inode, struct file *file)
 {
 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
 
-	mlog_entry("(0x%p, 0x%p, '%.*s')\n", inode, file,
-		       file->f_path.dentry->d_name.len,
-		       file->f_path.dentry->d_name.name);
-
 	spin_lock(&oi->ip_lock);
 	if (!--oi->ip_open_count)
 		oi->ip_flags &= ~OCFS2_INODE_OPEN_DIRECT;
+
+	trace_ocfs2_file_release(inode, file, file->f_path.dentry,
+				 oi->ip_blkno,
+				 file->f_path.dentry->d_name.len,
+				 file->f_path.dentry->d_name.name,
+				 oi->ip_open_count);
 	spin_unlock(&oi->ip_lock);
 
 	ocfs2_free_file_private(inode, file);
 
-	mlog_exit(0);
-
 	return 0;
 }
 
@@ -177,9 +178,11 @@ static int ocfs2_sync_file(struct file *file, int datasync)
 	struct inode *inode = file->f_mapping->host;
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 
-	mlog_entry("(0x%p, %d, 0x%p, '%.*s')\n", file, datasync,
-		   file->f_path.dentry, file->f_path.dentry->d_name.len,
-		   file->f_path.dentry->d_name.name);
+	trace_ocfs2_sync_file(inode, file, file->f_path.dentry,
+			      OCFS2_I(inode)->ip_blkno,
+			      file->f_path.dentry->d_name.len,
+			      file->f_path.dentry->d_name.name,
+			      (unsigned long long)datasync);
 
 	if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) {
 		/*
@@ -195,7 +198,8 @@ static int ocfs2_sync_file(struct file *file, int datasync)
 	err = jbd2_journal_force_commit(journal);
 
 bail:
-	mlog_exit(err);
+	if (err)
+		mlog_errno(err);
 
 	return (err < 0) ? -EIO : 0;
 }
@@ -251,8 +255,6 @@ int ocfs2_update_inode_atime(struct inode *inode,
 	handle_t *handle;
 	struct ocfs2_dinode *di = (struct ocfs2_dinode *) bh->b_data;
 
-	mlog_entry_void();
-
 	handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
 	if (IS_ERR(handle)) {
 		ret = PTR_ERR(handle);
@@ -280,7 +282,6 @@ int ocfs2_update_inode_atime(struct inode *inode,
 out_commit:
 	ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
 out:
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -291,7 +292,6 @@ static int ocfs2_set_inode_size(handle_t *handle,
 {
 	int status;
 
-	mlog_entry_void();
 	i_size_write(inode, new_i_size);
 	inode->i_blocks = ocfs2_inode_sector_count(inode);
 	inode->i_ctime = inode->i_mtime = CURRENT_TIME;
@@ -303,7 +303,6 @@ static int ocfs2_set_inode_size(handle_t *handle,
 	}
 
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -375,8 +374,6 @@ static int ocfs2_orphan_for_truncate(struct ocfs2_super *osb,
 	struct ocfs2_dinode *di;
 	u64 cluster_bytes;
 
-	mlog_entry_void();
-
 	/*
 	 * We need to CoW the cluster contains the offset if it is reflinked
 	 * since we will call ocfs2_zero_range_for_truncate later which will
@@ -429,8 +426,6 @@ static int ocfs2_orphan_for_truncate(struct ocfs2_super *osb,
 out_commit:
 	ocfs2_commit_trans(osb, handle);
 out:
-
-	mlog_exit(status);
 	return status;
 }
 
@@ -442,14 +437,14 @@ static int ocfs2_truncate_file(struct inode *inode,
 	struct ocfs2_dinode *fe = NULL;
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 
-	mlog_entry("(inode = %llu, new_i_size = %llu\n",
-		   (unsigned long long)OCFS2_I(inode)->ip_blkno,
-		   (unsigned long long)new_i_size);
-
 	/* We trust di_bh because it comes from ocfs2_inode_lock(), which
 	 * already validated it */
 	fe = (struct ocfs2_dinode *) di_bh->b_data;
 
+	trace_ocfs2_truncate_file((unsigned long long)OCFS2_I(inode)->ip_blkno,
+				  (unsigned long long)le64_to_cpu(fe->i_size),
+				  (unsigned long long)new_i_size);
+
 	mlog_bug_on_msg(le64_to_cpu(fe->i_size) != i_size_read(inode),
 			"Inode %llu, inode i_size = %lld != di "
 			"i_size = %llu, i_flags = 0x%x\n",
@@ -459,19 +454,14 @@ static int ocfs2_truncate_file(struct inode *inode,
 			le32_to_cpu(fe->i_flags));
 
 	if (new_i_size > le64_to_cpu(fe->i_size)) {
-		mlog(0, "asked to truncate file with size (%llu) to size (%llu)!\n",
-		     (unsigned long long)le64_to_cpu(fe->i_size),
-		     (unsigned long long)new_i_size);
+		trace_ocfs2_truncate_file_error(
+			(unsigned long long)le64_to_cpu(fe->i_size),
+			(unsigned long long)new_i_size);
 		status = -EINVAL;
 		mlog_errno(status);
 		goto bail;
 	}
 
-	mlog(0, "inode %llu, i_size = %llu, new_i_size = %llu\n",
-	     (unsigned long long)le64_to_cpu(fe->i_blkno),
-	     (unsigned long long)le64_to_cpu(fe->i_size),
-	     (unsigned long long)new_i_size);
-
 	/* lets handle the simple truncate cases before doing any more
 	 * cluster locking. */
 	if (new_i_size == le64_to_cpu(fe->i_size))
@@ -525,7 +515,6 @@ bail:
 	if (!status && OCFS2_I(inode)->ip_clusters == 0)
 		status = ocfs2_try_remove_refcount_tree(inode, di_bh);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -578,8 +567,6 @@ static int __ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
 	struct ocfs2_extent_tree et;
 	int did_quota = 0;
 
-	mlog_entry("(clusters_to_add = %u)\n", clusters_to_add);
-
 	/*
 	 * This function only exists for file systems which don't
 	 * support holes.
@@ -596,11 +583,6 @@ static int __ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
 restart_all:
 	BUG_ON(le32_to_cpu(fe->i_clusters) != OCFS2_I(inode)->ip_clusters);
 
-	mlog(0, "extend inode %llu, i_size = %lld, di->i_clusters = %u, "
-	     "clusters_to_add = %u\n",
-	     (unsigned long long)OCFS2_I(inode)->ip_blkno,
-	     (long long)i_size_read(inode), le32_to_cpu(fe->i_clusters),
-	     clusters_to_add);
 	ocfs2_init_dinode_extent_tree(&et, INODE_CACHE(inode), bh);
 	status = ocfs2_lock_allocators(inode, &et, clusters_to_add, 0,
 				       &data_ac, &meta_ac);
@@ -620,6 +602,12 @@ restart_all:
 	}
 
 restarted_transaction:
+	trace_ocfs2_extend_allocation(
+		(unsigned long long)OCFS2_I(inode)->ip_blkno,
+		(unsigned long long)i_size_read(inode),
+		le32_to_cpu(fe->i_clusters), clusters_to_add,
+		why, restart_func);
+
 	status = dquot_alloc_space_nodirty(inode,
 			ocfs2_clusters_to_bytes(osb->sb, clusters_to_add));
 	if (status)
@@ -666,13 +654,11 @@ restarted_transaction:
 
 	if (why != RESTART_NONE && clusters_to_add) {
 		if (why == RESTART_META) {
-			mlog(0, "restarting function.\n");
 			restart_func = 1;
 			status = 0;
 		} else {
 			BUG_ON(why != RESTART_TRANS);
 
-			mlog(0, "restarting transaction.\n");
 			/* TODO: This can be more intelligent. */
 			credits = ocfs2_calc_extend_credits(osb->sb,
 							    &fe->id2.i_list,
@@ -689,11 +675,11 @@ restarted_transaction:
 		}
 	}
 
-	mlog(0, "fe: i_clusters = %u, i_size=%llu\n",
+	trace_ocfs2_extend_allocation_end(OCFS2_I(inode)->ip_blkno,
 	     le32_to_cpu(fe->i_clusters),
-	     (unsigned long long)le64_to_cpu(fe->i_size));
-	mlog(0, "inode: ip_clusters=%u, i_size=%lld\n",
-	     OCFS2_I(inode)->ip_clusters, (long long)i_size_read(inode));
+	     (unsigned long long)le64_to_cpu(fe->i_size),
+	     OCFS2_I(inode)->ip_clusters,
+	     (unsigned long long)i_size_read(inode));
 
 leave:
 	if (status < 0 && did_quota)
@@ -718,7 +704,6 @@ leave:
 	brelse(bh);
 	bh = NULL;
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -785,10 +770,11 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from,
 	if (!zero_to)
 		zero_to = PAGE_CACHE_SIZE;
 
-	mlog(0,
-	     "abs_from = %llu, abs_to = %llu, index = %lu, zero_from = %u, zero_to = %u\n",
-	     (unsigned long long)abs_from, (unsigned long long)abs_to,
-	     index, zero_from, zero_to);
+	trace_ocfs2_write_zero_page(
+			(unsigned long long)OCFS2_I(inode)->ip_blkno,
+			(unsigned long long)abs_from,
+			(unsigned long long)abs_to,
+			index, zero_from, zero_to);
 
 	/* We know that zero_from is block aligned */
 	for (block_start = zero_from; block_start < zero_to;
@@ -928,9 +914,10 @@ static int ocfs2_zero_extend_range(struct inode *inode, u64 range_start,
 	u64 next_pos;
 	u64 zero_pos = range_start;
 
-	mlog(0, "range_start = %llu, range_end = %llu\n",
-	     (unsigned long long)range_start,
-	     (unsigned long long)range_end);
+	trace_ocfs2_zero_extend_range(
+			(unsigned long long)OCFS2_I(inode)->ip_blkno,
+			(unsigned long long)range_start,
+			(unsigned long long)range_end);
 	BUG_ON(range_start >= range_end);
 
 	while (zero_pos < range_end) {
@@ -962,9 +949,9 @@ int ocfs2_zero_extend(struct inode *inode, struct buffer_head *di_bh,
 	struct super_block *sb = inode->i_sb;
 
 	zero_start = ocfs2_align_bytes_to_blocks(sb, i_size_read(inode));
-	mlog(0, "zero_start %llu for i_size %llu\n",
-	     (unsigned long long)zero_start,
-	     (unsigned long long)i_size_read(inode));
+	trace_ocfs2_zero_extend((unsigned long long)OCFS2_I(inode)->ip_blkno,
+				(unsigned long long)zero_start,
+				(unsigned long long)i_size_read(inode));
 	while (zero_start < zero_to_size) {
 		ret = ocfs2_zero_extend_get_range(inode, di_bh, zero_start,
 						  zero_to_size,
@@ -1113,30 +1100,20 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
 	struct dquot *transfer_to[MAXQUOTAS] = { };
 	int qtype;
 
-	mlog_entry("(0x%p, '%.*s')\n", dentry,
-	           dentry->d_name.len, dentry->d_name.name);
+	trace_ocfs2_setattr(inode, dentry,
+			    (unsigned long long)OCFS2_I(inode)->ip_blkno,
+			    dentry->d_name.len, dentry->d_name.name,
+			    attr->ia_valid, attr->ia_mode,
+			    attr->ia_uid, attr->ia_gid);
 
 	/* ensuring we don't even attempt to truncate a symlink */
 	if (S_ISLNK(inode->i_mode))
 		attr->ia_valid &= ~ATTR_SIZE;
 
-	if (attr->ia_valid & ATTR_MODE)
-		mlog(0, "mode change: %d\n", attr->ia_mode);
-	if (attr->ia_valid & ATTR_UID)
-		mlog(0, "uid change: %d\n", attr->ia_uid);
-	if (attr->ia_valid & ATTR_GID)
-		mlog(0, "gid change: %d\n", attr->ia_gid);
-	if (attr->ia_valid & ATTR_SIZE)
-		mlog(0, "size change...\n");
-	if (attr->ia_valid & (ATTR_ATIME | ATTR_MTIME | ATTR_CTIME))
-		mlog(0, "time change...\n");
-
 #define OCFS2_VALID_ATTRS (ATTR_ATIME | ATTR_MTIME | ATTR_CTIME | ATTR_SIZE \
 			   | ATTR_GID | ATTR_UID | ATTR_MODE)
-	if (!(attr->ia_valid & OCFS2_VALID_ATTRS)) {
-		mlog(0, "can't handle attrs: 0x%x\n", attr->ia_valid);
+	if (!(attr->ia_valid & OCFS2_VALID_ATTRS))
 		return 0;
-	}
 
 	status = inode_change_ok(inode, attr);
 	if (status)
@@ -1274,7 +1251,6 @@ bail:
 			mlog_errno(status);
 	}
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -1287,8 +1263,6 @@ int ocfs2_getattr(struct vfsmount *mnt,
 	struct ocfs2_super *osb = sb->s_fs_info;
 	int err;
 
-	mlog_entry_void();
-
 	err = ocfs2_inode_revalidate(dentry);
 	if (err) {
 		if (err != -ENOENT)
@@ -1302,8 +1276,6 @@ int ocfs2_getattr(struct vfsmount *mnt,
 	stat->blksize = osb->s_clustersize;
 
 bail:
-	mlog_exit(err);
-
 	return err;
 }
 
@@ -1314,8 +1286,6 @@ int ocfs2_permission(struct inode *inode, int mask, unsigned int flags)
 	if (flags & IPERM_FLAG_RCU)
 		return -ECHILD;
 
-	mlog_entry_void();
-
 	ret = ocfs2_inode_lock(inode, NULL, 0);
 	if (ret) {
 		if (ret != -ENOENT)
@@ -1327,7 +1297,6 @@ int ocfs2_permission(struct inode *inode, int mask, unsigned int flags)
 
 	ocfs2_inode_unlock(inode, 0);
 out:
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -1339,8 +1308,9 @@ static int __ocfs2_write_remove_suid(struct inode *inode,
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 	struct ocfs2_dinode *di;
 
-	mlog_entry("(Inode %llu, mode 0%o)\n",
-		   (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_mode);
+	trace_ocfs2_write_remove_suid(
+			(unsigned long long)OCFS2_I(inode)->ip_blkno,
+			inode->i_mode);
 
 	handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
 	if (IS_ERR(handle)) {
@@ -1368,7 +1338,6 @@ static int __ocfs2_write_remove_suid(struct inode *inode,
 out_trans:
 	ocfs2_commit_trans(osb, handle);
 out:
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -1547,8 +1516,9 @@ static int ocfs2_zero_partial_clusters(struct inode *inode,
 	 * partial clusters here. There's no need to worry about
 	 * physical allocation - the zeroing code knows to skip holes.
 	 */
-	mlog(0, "byte start: %llu, end: %llu\n",
-	     (unsigned long long)start, (unsigned long long)end);
+	trace_ocfs2_zero_partial_clusters(
+		(unsigned long long)OCFS2_I(inode)->ip_blkno,
+		(unsigned long long)start, (unsigned long long)end);
 
 	/*
 	 * If both edges are on a cluster boundary then there's no
@@ -1572,8 +1542,8 @@ static int ocfs2_zero_partial_clusters(struct inode *inode,
 	if (tmpend > end)
 		tmpend = end;
 
-	mlog(0, "1st range: start: %llu, tmpend: %llu\n",
-	     (unsigned long long)start, (unsigned long long)tmpend);
+	trace_ocfs2_zero_partial_clusters_range1((unsigned long long)start,
+						 (unsigned long long)tmpend);
 
 	ret = ocfs2_zero_range_for_truncate(inode, handle, start, tmpend);
 	if (ret)
@@ -1587,8 +1557,8 @@ static int ocfs2_zero_partial_clusters(struct inode *inode,
 		 */
 		start = end & ~(osb->s_clustersize - 1);
 
-		mlog(0, "2nd range: start: %llu, end: %llu\n",
-		     (unsigned long long)start, (unsigned long long)end);
+		trace_ocfs2_zero_partial_clusters_range2(
+			(unsigned long long)start, (unsigned long long)end);
 
 		ret = ocfs2_zero_range_for_truncate(inode, handle, start, end);
 		if (ret)
@@ -1688,6 +1658,11 @@ static int ocfs2_remove_inode_range(struct inode *inode,
 	ocfs2_init_dinode_extent_tree(&et, INODE_CACHE(inode), di_bh);
 	ocfs2_init_dealloc_ctxt(&dealloc);
 
+	trace_ocfs2_remove_inode_range(
+			(unsigned long long)OCFS2_I(inode)->ip_blkno,
+			(unsigned long long)byte_start,
+			(unsigned long long)byte_len);
+
 	if (byte_len == 0)
 		return 0;
 
@@ -1734,11 +1709,6 @@ static int ocfs2_remove_inode_range(struct inode *inode,
 	trunc_end = (byte_start + byte_len) >> osb->s_clustersize_bits;
 	cluster_in_el = trunc_end;
 
-	mlog(0, "Inode: %llu, start: %llu, len: %llu, cstart: %u, cend: %u\n",
-	     (unsigned long long)OCFS2_I(inode)->ip_blkno,
-	     (unsigned long long)byte_start,
-	     (unsigned long long)byte_len, trunc_start, trunc_end);
-
 	ret = ocfs2_zero_partial_clusters(inode, byte_start, byte_len);
 	if (ret) {
 		mlog_errno(ret);
@@ -2093,7 +2063,7 @@ static int ocfs2_prepare_inode_for_write(struct file *file,
 	int ret = 0, meta_level = 0;
 	struct dentry *dentry = file->f_path.dentry;
 	struct inode *inode = dentry->d_inode;
-	loff_t saved_pos, end;
+	loff_t saved_pos = 0, end;
 
 	/*
 	 * We start with a read level meta lock and only jump to an ex
@@ -2132,12 +2102,10 @@ static int ocfs2_prepare_inode_for_write(struct file *file,
 
 		/* work on a copy of ppos until we're sure that we won't have
 		 * to recalculate it due to relocking. */
-		if (appending) {
+		if (appending)
 			saved_pos = i_size_read(inode);
-			mlog(0, "O_APPEND: inode->i_size=%llu\n", saved_pos);
-		} else {
+		else
 			saved_pos = *ppos;
-		}
 
 		end = saved_pos + count;
 
@@ -2208,6 +2176,10 @@ static int ocfs2_prepare_inode_for_write(struct file *file,
 		*ppos = saved_pos;
 
 out_unlock:
+	trace_ocfs2_prepare_inode_for_write(OCFS2_I(inode)->ip_blkno,
+					    saved_pos, appending, count,
+					    direct_io, has_refcount);
+
 	if (meta_level >= 0)
 		ocfs2_inode_unlock(inode, meta_level);
 
@@ -2233,10 +2205,11 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
 	int full_coherency = !(osb->s_mount_opt &
 			       OCFS2_MOUNT_COHERENCY_BUFFERED);
 
-	mlog_entry("(0x%p, %u, '%.*s')\n", file,
-		   (unsigned int)nr_segs,
-		   file->f_path.dentry->d_name.len,
-		   file->f_path.dentry->d_name.name);
+	trace_ocfs2_file_aio_write(inode, file, file->f_path.dentry,
+		(unsigned long long)OCFS2_I(inode)->ip_blkno,
+		file->f_path.dentry->d_name.len,
+		file->f_path.dentry->d_name.name,
+		(unsigned int)nr_segs);
 
 	if (iocb->ki_left == 0)
 		return 0;
@@ -2402,7 +2375,6 @@ out_sems:
 
 	if (written)
 		ret = written;
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -2438,10 +2410,11 @@ static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe,
 		.u.file = out,
 	};
 
-	mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", out, pipe,
-		   (unsigned int)len,
-		   out->f_path.dentry->d_name.len,
-		   out->f_path.dentry->d_name.name);
+
+	trace_ocfs2_file_splice_write(inode, out, out->f_path.dentry,
+			(unsigned long long)OCFS2_I(inode)->ip_blkno,
+			out->f_path.dentry->d_name.len,
+			out->f_path.dentry->d_name.name, len);
 
 	if (pipe->inode)
 		mutex_lock_nested(&pipe->inode->i_mutex, I_MUTEX_PARENT);
@@ -2485,7 +2458,6 @@ static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe,
 		balance_dirty_pages_ratelimited_nr(mapping, nr_pages);
 	}
 
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -2498,10 +2470,10 @@ static ssize_t ocfs2_file_splice_read(struct file *in,
 	int ret = 0, lock_level = 0;
 	struct inode *inode = in->f_path.dentry->d_inode;
 
-	mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", in, pipe,
-		   (unsigned int)len,
-		   in->f_path.dentry->d_name.len,
-		   in->f_path.dentry->d_name.name);
+	trace_ocfs2_file_splice_read(inode, in, in->f_path.dentry,
+			(unsigned long long)OCFS2_I(inode)->ip_blkno,
+			in->f_path.dentry->d_name.len,
+			in->f_path.dentry->d_name.name, len);
 
 	/*
 	 * See the comment in ocfs2_file_aio_read()
@@ -2516,7 +2488,6 @@ static ssize_t ocfs2_file_splice_read(struct file *in,
 	ret = generic_file_splice_read(in, ppos, pipe, len, flags);
 
 bail:
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -2529,10 +2500,11 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
 	struct file *filp = iocb->ki_filp;
 	struct inode *inode = filp->f_path.dentry->d_inode;
 
-	mlog_entry("(0x%p, %u, '%.*s')\n", filp,
-		   (unsigned int)nr_segs,
-		   filp->f_path.dentry->d_name.len,
-		   filp->f_path.dentry->d_name.name);
+	trace_ocfs2_file_aio_read(inode, filp, filp->f_path.dentry,
+			(unsigned long long)OCFS2_I(inode)->ip_blkno,
+			filp->f_path.dentry->d_name.len,
+			filp->f_path.dentry->d_name.name, nr_segs);
+
 
 	if (!inode) {
 		ret = -EINVAL;
@@ -2578,8 +2550,7 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
 	ocfs2_inode_unlock(inode, lock_level);
 
 	ret = generic_file_aio_read(iocb, iov, nr_segs, iocb->ki_pos);
-	if (ret == -EINVAL)
-		mlog(0, "generic_file_aio_read returned -EINVAL\n");
+	trace_generic_file_aio_read_ret(ret);
 
 	/* buffered aio wouldn't have proper lock coverage today */
 	BUG_ON(ret == -EIOCBQUEUED && !(filp->f_flags & O_DIRECT));
@@ -2597,7 +2568,6 @@ bail:
 	}
 	if (rw_level != -1)
 		ocfs2_rw_unlock(inode, rw_level);
-	mlog_exit(ret);
 
 	return ret;
 }
diff --git a/fs/ocfs2/heartbeat.c b/fs/ocfs2/heartbeat.c
index 1aa863d..d8208b2 100644
--- a/fs/ocfs2/heartbeat.c
+++ b/fs/ocfs2/heartbeat.c
@@ -28,7 +28,6 @@
 #include <linux/types.h>
 #include <linux/highmem.h>
 
-#define MLOG_MASK_PREFIX ML_SUPER
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -37,6 +36,7 @@
 #include "heartbeat.h"
 #include "inode.h"
 #include "journal.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -66,7 +66,7 @@ void ocfs2_do_node_down(int node_num, void *data)
 
 	BUG_ON(osb->node_num == node_num);
 
-	mlog(0, "ocfs2: node down event for %d\n", node_num);
+	trace_ocfs2_do_node_down(node_num);
 
 	if (!osb->cconn) {
 		/*
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 4068c6c..177d3a6 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -31,7 +31,6 @@
 
 #include <asm/byteorder.h>
 
-#define MLOG_MASK_PREFIX ML_INODE
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -53,6 +52,7 @@
 #include "uptodate.h"
 #include "xattr.h"
 #include "refcounttree.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -131,7 +131,8 @@ struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags,
 	struct super_block *sb = osb->sb;
 	struct ocfs2_find_inode_args args;
 
-	mlog_entry("(blkno = %llu)\n", (unsigned long long)blkno);
+	trace_ocfs2_iget_begin((unsigned long long)blkno, flags,
+			       sysfile_type);
 
 	/* Ok. By now we've either got the offsets passed to us by the
 	 * caller, or we just pulled them off the bh. Lets do some
@@ -152,16 +153,16 @@ struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags,
 	/* inode was *not* in the inode cache. 2.6.x requires
 	 * us to do our own read_inode call and unlock it
 	 * afterwards. */
-	if (inode && inode->i_state & I_NEW) {
-		mlog(0, "Inode was not in inode cache, reading it.\n");
-		ocfs2_read_locked_inode(inode, &args);
-		unlock_new_inode(inode);
-	}
 	if (inode == NULL) {
 		inode = ERR_PTR(-ENOMEM);
 		mlog_errno(PTR_ERR(inode));
 		goto bail;
 	}
+	trace_ocfs2_iget5_locked(inode->i_state);
+	if (inode->i_state & I_NEW) {
+		ocfs2_read_locked_inode(inode, &args);
+		unlock_new_inode(inode);
+	}
 	if (is_bad_inode(inode)) {
 		iput(inode);
 		inode = ERR_PTR(-ESTALE);
@@ -170,9 +171,8 @@ struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags,
 
 bail:
 	if (!IS_ERR(inode)) {
-		mlog(0, "returning inode with number %llu\n",
-		     (unsigned long long)OCFS2_I(inode)->ip_blkno);
-		mlog_exit_ptr(inode);
+		trace_ocfs2_iget_end(inode, 
+			(unsigned long long)OCFS2_I(inode)->ip_blkno);
 	}
 
 	return inode;
@@ -192,18 +192,17 @@ static int ocfs2_find_actor(struct inode *inode, void *opaque)
 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
 	int ret = 0;
 
-	mlog_entry("(0x%p, %lu, 0x%p)\n", inode, inode->i_ino, opaque);
-
 	args = opaque;
 
 	mlog_bug_on_msg(!inode, "No inode in find actor!\n");
 
+	trace_ocfs2_find_actor(inode, inode->i_ino, opaque, args->fi_blkno);
+
 	if (oi->ip_blkno != args->fi_blkno)
 		goto bail;
 
 	ret = 1;
 bail:
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -218,8 +217,6 @@ static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)
 	static struct lock_class_key ocfs2_quota_ip_alloc_sem_key,
 				     ocfs2_file_ip_alloc_sem_key;
 
-	mlog_entry("inode = %p, opaque = %p\n", inode, opaque);
-
 	inode->i_ino = args->fi_ino;
 	OCFS2_I(inode)->ip_blkno = args->fi_blkno;
 	if (args->fi_sysfile_type != 0)
@@ -235,7 +232,6 @@ static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)
 		lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,
 				  &ocfs2_file_ip_alloc_sem_key);
 
-	mlog_exit(0);
 	return 0;
 }
 
@@ -246,9 +242,6 @@ void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
 	struct ocfs2_super *osb;
 	int use_plocks = 1;
 
-	mlog_entry("(0x%p, size:%llu)\n", inode,
-		   (unsigned long long)le64_to_cpu(fe->i_size));
-
 	sb = inode->i_sb;
 	osb = OCFS2_SB(sb);
 
@@ -300,20 +293,20 @@ void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
 
 	inode->i_nlink = ocfs2_read_links_count(fe);
 
+	trace_ocfs2_populate_inode(OCFS2_I(inode)->ip_blkno,
+				   le32_to_cpu(fe->i_flags));
 	if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) {
 		OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE;
 		inode->i_flags |= S_NOQUOTA;
 	}
-
+  
 	if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) {
 		OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
-		mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino);
 	} else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) {
 		OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
 	} else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) {
 		inode->i_flags |= S_NOQUOTA;
 	} else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) {
-		mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino);
 		/* we can't actually hit this as read_inode can't
 		 * handle superblocks today ;-) */
 		BUG();
@@ -381,7 +374,6 @@ void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
 	if (S_ISDIR(inode->i_mode))
 		ocfs2_resv_set_type(&OCFS2_I(inode)->ip_la_data_resv,
 				    OCFS2_RESV_FLAG_DIR);
-	mlog_exit_void();
 }
 
 static int ocfs2_read_locked_inode(struct inode *inode,
@@ -394,8 +386,6 @@ static int ocfs2_read_locked_inode(struct inode *inode,
 	int status, can_lock;
 	u32 generation = 0;
 
-	mlog_entry("(0x%p, 0x%p)\n", inode, args);
-
 	status = -EINVAL;
 	if (inode == NULL || inode->i_sb == NULL) {
 		mlog(ML_ERROR, "bad inode\n");
@@ -443,6 +433,9 @@ static int ocfs2_read_locked_inode(struct inode *inode,
 		&& !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY)
 		&& !ocfs2_mount_local(osb);
 
+	trace_ocfs2_read_locked_inode(
+		(unsigned long long)OCFS2_I(inode)->ip_blkno, can_lock);
+
 	/*
 	 * To maintain backwards compatibility with older versions of
 	 * ocfs2-tools, we still store the generation value for system
@@ -534,7 +527,6 @@ bail:
 	if (args && bh)
 		brelse(bh);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -551,8 +543,6 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
 	struct ocfs2_dinode *fe;
 	handle_t *handle = NULL;
 
-	mlog_entry_void();
-
 	fe = (struct ocfs2_dinode *) fe_bh->b_data;
 
 	/*
@@ -600,7 +590,6 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
 out:
 	if (handle)
 		ocfs2_commit_trans(osb, handle);
-	mlog_exit(status);
 	return status;
 }
 
@@ -696,8 +685,6 @@ static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb,
 
 	spin_lock(&osb->osb_lock);
 	if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) {
-		mlog(0, "Recovery is happening on orphan dir %d, will skip "
-		     "this inode\n", slot);
 		ret = -EDEADLK;
 		goto out;
 	}
@@ -706,6 +693,7 @@ static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb,
 	osb->osb_orphan_wipes[slot]++;
 out:
 	spin_unlock(&osb->osb_lock);
+	trace_ocfs2_check_orphan_recovery_state(slot, ret);
 	return ret;
 }
 
@@ -816,6 +804,10 @@ static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 
+	trace_ocfs2_inode_is_valid_to_delete(current, osb->dc_task,
+					     (unsigned long long)oi->ip_blkno,
+					     oi->ip_flags);
+
 	/* We shouldn't be getting here for the root directory
 	 * inode.. */
 	if (inode == osb->root_inode) {
@@ -828,11 +820,8 @@ static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
 	 * have to skip deleting this guy. That's OK though because
 	 * the node who's doing the actual deleting should handle it
 	 * anyway. */
-	if (current == osb->dc_task) {
-		mlog(0, "Skipping delete of %lu because we're currently "
-		     "in downconvert\n", inode->i_ino);
+	if (current == osb->dc_task)
 		goto bail;
-	}
 
 	spin_lock(&oi->ip_lock);
 	/* OCFS2 *never* deletes system files. This should technically
@@ -847,11 +836,8 @@ static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
 	/* If we have allowd wipe of this inode for another node, it
 	 * will be marked here so we can safely skip it. Recovery will
 	 * cleanup any inodes we might inadvertantly skip here. */
-	if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) {
-		mlog(0, "Skipping delete of %lu because another node "
-		     "has done this for us.\n", inode->i_ino);
+	if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE)
 		goto bail_unlock;
-	}
 
 	ret = 1;
 bail_unlock:
@@ -868,28 +854,27 @@ static int ocfs2_query_inode_wipe(struct inode *inode,
 				  struct buffer_head *di_bh,
 				  int *wipe)
 {
-	int status = 0;
+	int status = 0, reason = 0;
 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
 	struct ocfs2_dinode *di;
 
 	*wipe = 0;
 
+	trace_ocfs2_query_inode_wipe_begin((unsigned long long)oi->ip_blkno,
+					   inode->i_nlink);
+
 	/* While we were waiting for the cluster lock in
 	 * ocfs2_delete_inode, another node might have asked to delete
 	 * the inode. Recheck our flags to catch this. */
 	if (!ocfs2_inode_is_valid_to_delete(inode)) {
-		mlog(0, "Skipping delete of %llu because flags changed\n",
-		     (unsigned long long)oi->ip_blkno);
+		reason = 1;
 		goto bail;
 	}
 
 	/* Now that we have an up to date inode, we can double check
 	 * the link count. */
-	if (inode->i_nlink) {
-		mlog(0, "Skipping delete of %llu because nlink = %u\n",
-		     (unsigned long long)oi->ip_blkno, inode->i_nlink);
+	if (inode->i_nlink)
 		goto bail;
-	}
 
 	/* Do some basic inode verification... */
 	di = (struct ocfs2_dinode *) di_bh->b_data;
@@ -904,9 +889,7 @@ static int ocfs2_query_inode_wipe(struct inode *inode,
 		 * ORPHANED_FL not.
 		 */
 		if (di->i_dyn_features & cpu_to_le16(OCFS2_HAS_REFCOUNT_FL)) {
-			mlog(0, "Reflinked inode %llu is no longer orphaned.  "
-			     "it shouldn't be deleted\n",
-			     (unsigned long long)oi->ip_blkno);
+			reason = 2;
 			goto bail;
 		}
 
@@ -943,8 +926,7 @@ static int ocfs2_query_inode_wipe(struct inode *inode,
 	status = ocfs2_try_open_lock(inode, 1);
 	if (status == -EAGAIN) {
 		status = 0;
-		mlog(0, "Skipping delete of %llu because it is in use on "
-		     "other nodes\n", (unsigned long long)oi->ip_blkno);
+		reason = 3;
 		goto bail;
 	}
 	if (status < 0) {
@@ -953,11 +935,10 @@ static int ocfs2_query_inode_wipe(struct inode *inode,
 	}
 
 	*wipe = 1;
-	mlog(0, "Inode %llu is ok to wipe from orphan dir %u\n",
-	     (unsigned long long)oi->ip_blkno,
-	     le16_to_cpu(di->i_orphaned_slot));
+	trace_ocfs2_query_inode_wipe_succ(le16_to_cpu(di->i_orphaned_slot));
 
 bail:
+	trace_ocfs2_query_inode_wipe_end(status, reason);
 	return status;
 }
 
@@ -967,8 +948,8 @@ bail:
 static void ocfs2_cleanup_delete_inode(struct inode *inode,
 				       int sync_data)
 {
-	mlog(0, "Cleanup inode %llu, sync = %d\n",
-	     (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data);
+	trace_ocfs2_cleanup_delete_inode(
+		(unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data);
 	if (sync_data)
 		write_inode_now(inode, 1);
 	truncate_inode_pages(&inode->i_data, 0);
@@ -980,15 +961,15 @@ static void ocfs2_delete_inode(struct inode *inode)
 	sigset_t oldset;
 	struct buffer_head *di_bh = NULL;
 
-	mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
+	trace_ocfs2_delete_inode(inode->i_ino,
+				 (unsigned long long)OCFS2_I(inode)->ip_blkno,
+				 is_bad_inode(inode));
 
 	/* When we fail in read_inode() we mark inode as bad. The second test
 	 * catches the case when inode allocation fails before allocating
 	 * a block for inode. */
-	if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) {
-		mlog(0, "Skipping delete of bad inode\n");
+	if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno)
 		goto bail;
-	}
 
 	dquot_initialize(inode);
 
@@ -1080,7 +1061,7 @@ bail_unlock_nfs_sync:
 bail_unblock:
 	ocfs2_unblock_signals(&oldset);
 bail:
-	mlog_exit_void();
+	return;
 }
 
 static void ocfs2_clear_inode(struct inode *inode)
@@ -1088,11 +1069,9 @@ static void ocfs2_clear_inode(struct inode *inode)
 	int status;
 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
 
-	mlog_entry_void();
-
 	end_writeback(inode);
-	mlog(0, "Clearing inode: %llu, nlink = %u\n",
-	     (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_nlink);
+	trace_ocfs2_clear_inode((unsigned long long)oi->ip_blkno,
+				inode->i_nlink);
 
 	mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL,
 			"Inode=%lu\n", inode->i_ino);
@@ -1181,8 +1160,6 @@ static void ocfs2_clear_inode(struct inode *inode)
 	 */
 	jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal,
 				       &oi->ip_jinode);
-
-	mlog_exit_void();
 }
 
 void ocfs2_evict_inode(struct inode *inode)
@@ -1204,17 +1181,14 @@ int ocfs2_drop_inode(struct inode *inode)
 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
 	int res;
 
-	mlog_entry_void();
-
-	mlog(0, "Drop inode %llu, nlink = %u, ip_flags = 0x%x\n",
-	     (unsigned long long)oi->ip_blkno, inode->i_nlink, oi->ip_flags);
+	trace_ocfs2_drop_inode((unsigned long long)oi->ip_blkno,
+				inode->i_nlink, oi->ip_flags);
 
 	if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)
 		res = 1;
 	else
 		res = generic_drop_inode(inode);
 
-	mlog_exit_void();
 	return res;
 }
 
@@ -1226,11 +1200,11 @@ int ocfs2_inode_revalidate(struct dentry *dentry)
 	struct inode *inode = dentry->d_inode;
 	int status = 0;
 
-	mlog_entry("(inode = 0x%p, ino = %llu)\n", inode,
-		   inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL);
+	trace_ocfs2_inode_revalidate(inode,
+		inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL,
+		inode ? (unsigned long long)OCFS2_I(inode)->ip_flags : 0);
 
 	if (!inode) {
-		mlog(0, "eep, no inode!\n");
 		status = -ENOENT;
 		goto bail;
 	}
@@ -1238,7 +1212,6 @@ int ocfs2_inode_revalidate(struct dentry *dentry)
 	spin_lock(&OCFS2_I(inode)->ip_lock);
 	if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) {
 		spin_unlock(&OCFS2_I(inode)->ip_lock);
-		mlog(0, "inode deleted!\n");
 		status = -ENOENT;
 		goto bail;
 	}
@@ -1254,8 +1227,6 @@ int ocfs2_inode_revalidate(struct dentry *dentry)
 	}
 	ocfs2_inode_unlock(inode, 0);
 bail:
-	mlog_exit(status);
-
 	return status;
 }
 
@@ -1271,8 +1242,7 @@ int ocfs2_mark_inode_dirty(handle_t *handle,
 	int status;
 	struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data;
 
-	mlog_entry("(inode %llu)\n",
-		   (unsigned long long)OCFS2_I(inode)->ip_blkno);
+	trace_ocfs2_mark_inode_dirty((unsigned long long)OCFS2_I(inode)->ip_blkno);
 
 	status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), bh,
 					 OCFS2_JOURNAL_ACCESS_WRITE);
@@ -1302,7 +1272,6 @@ int ocfs2_mark_inode_dirty(handle_t *handle,
 
 	ocfs2_journal_dirty(handle, bh);
 leave:
-	mlog_exit(status);
 	return status;
 }
 
@@ -1345,8 +1314,7 @@ int ocfs2_validate_inode_block(struct super_block *sb,
 	int rc;
 	struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
 
-	mlog(0, "Validating dinode %llu\n",
-	     (unsigned long long)bh->b_blocknr);
+	trace_ocfs2_validate_inode_block((unsigned long long)bh->b_blocknr);
 
 	BUG_ON(!buffer_uptodate(bh));
 
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index 7a48681..8f13c59 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -9,7 +9,6 @@
 #include <linux/mount.h>
 #include <linux/compat.h>
 
-#define MLOG_MASK_PREFIX ML_INODE
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -46,6 +45,22 @@ static inline void __o2info_set_request_error(struct ocfs2_info_request *kreq,
 #define o2info_set_request_error(a, b) \
 		__o2info_set_request_error((struct ocfs2_info_request *)&(a), b)
 
+static inline void __o2info_set_request_filled(struct ocfs2_info_request *req)
+{
+	req->ir_flags |= OCFS2_INFO_FL_FILLED;
+}
+
+#define o2info_set_request_filled(a) \
+		__o2info_set_request_filled((struct ocfs2_info_request *)&(a))
+
+static inline void __o2info_clear_request_filled(struct ocfs2_info_request *req)
+{
+	req->ir_flags &= ~OCFS2_INFO_FL_FILLED;
+}
+
+#define o2info_clear_request_filled(a) \
+		__o2info_clear_request_filled((struct ocfs2_info_request *)&(a))
+
 static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags)
 {
 	int status;
@@ -59,7 +74,6 @@ static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags)
 	*flags = OCFS2_I(inode)->ip_attr;
 	ocfs2_inode_unlock(inode, 0);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -82,7 +96,7 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
 	}
 
 	status = -EACCES;
-	if (!is_owner_or_cap(inode))
+	if (!inode_owner_or_capable(inode))
 		goto bail_unlock;
 
 	if (!S_ISDIR(inode->i_mode))
@@ -125,7 +139,6 @@ bail:
 
 	brelse(bh);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -139,7 +152,8 @@ int ocfs2_info_handle_blocksize(struct inode *inode,
 		goto bail;
 
 	oib.ib_blocksize = inode->i_sb->s_blocksize;
-	oib.ib_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+	o2info_set_request_filled(oib);
 
 	if (o2info_to_user(oib, req))
 		goto bail;
@@ -163,7 +177,8 @@ int ocfs2_info_handle_clustersize(struct inode *inode,
 		goto bail;
 
 	oic.ic_clustersize = osb->s_clustersize;
-	oic.ic_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+	o2info_set_request_filled(oic);
 
 	if (o2info_to_user(oic, req))
 		goto bail;
@@ -187,7 +202,8 @@ int ocfs2_info_handle_maxslots(struct inode *inode,
 		goto bail;
 
 	oim.im_max_slots = osb->max_slots;
-	oim.im_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+	o2info_set_request_filled(oim);
 
 	if (o2info_to_user(oim, req))
 		goto bail;
@@ -211,7 +227,8 @@ int ocfs2_info_handle_label(struct inode *inode,
 		goto bail;
 
 	memcpy(oil.il_label, osb->vol_label, OCFS2_MAX_VOL_LABEL_LEN);
-	oil.il_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+	o2info_set_request_filled(oil);
 
 	if (o2info_to_user(oil, req))
 		goto bail;
@@ -235,7 +252,8 @@ int ocfs2_info_handle_uuid(struct inode *inode,
 		goto bail;
 
 	memcpy(oiu.iu_uuid_str, osb->uuid_str, OCFS2_TEXT_UUID_LEN + 1);
-	oiu.iu_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+	o2info_set_request_filled(oiu);
 
 	if (o2info_to_user(oiu, req))
 		goto bail;
@@ -261,7 +279,8 @@ int ocfs2_info_handle_fs_features(struct inode *inode,
 	oif.if_compat_features = osb->s_feature_compat;
 	oif.if_incompat_features = osb->s_feature_incompat;
 	oif.if_ro_compat_features = osb->s_feature_ro_compat;
-	oif.if_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+	o2info_set_request_filled(oif);
 
 	if (o2info_to_user(oif, req))
 		goto bail;
@@ -286,7 +305,7 @@ int ocfs2_info_handle_journal_size(struct inode *inode,
 
 	oij.ij_journal_size = osb->journal->j_inode->i_size;
 
-	oij.ij_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+	o2info_set_request_filled(oij);
 
 	if (o2info_to_user(oij, req))
 		goto bail;
@@ -308,7 +327,7 @@ int ocfs2_info_handle_unknown(struct inode *inode,
 	if (o2info_from_user(oir, req))
 		goto bail;
 
-	oir.ir_flags &= ~OCFS2_INFO_FL_FILLED;
+	o2info_clear_request_filled(oir);
 
 	if (o2info_to_user(oir, req))
 		goto bail;
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index faa2303..dcc2d93 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -31,7 +31,6 @@
 #include <linux/time.h>
 #include <linux/random.h>
 
-#define MLOG_MASK_PREFIX ML_JOURNAL
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -52,6 +51,7 @@
 #include "quota.h"
 
 #include "buffer_head_io.h"
+#include "ocfs2_trace.h"
 
 DEFINE_SPINLOCK(trans_inc_lock);
 
@@ -303,16 +303,15 @@ static int ocfs2_commit_cache(struct ocfs2_super *osb)
 	unsigned int flushed;
 	struct ocfs2_journal *journal = NULL;
 
-	mlog_entry_void();
-
 	journal = osb->journal;
 
 	/* Flush all pending commits and checkpoint the journal. */
 	down_write(&journal->j_trans_barrier);
 
-	if (atomic_read(&journal->j_num_trans) == 0) {
+	flushed = atomic_read(&journal->j_num_trans);
+	trace_ocfs2_commit_cache_begin(flushed);
+	if (flushed == 0) {
 		up_write(&journal->j_trans_barrier);
-		mlog(0, "No transactions for me to flush!\n");
 		goto finally;
 	}
 
@@ -331,13 +330,11 @@ static int ocfs2_commit_cache(struct ocfs2_super *osb)
 	atomic_set(&journal->j_num_trans, 0);
 	up_write(&journal->j_trans_barrier);
 
-	mlog(0, "commit_thread: flushed transaction %lu (%u handles)\n",
-	     journal->j_trans_id, flushed);
+	trace_ocfs2_commit_cache_end(journal->j_trans_id, flushed);
 
 	ocfs2_wake_downconvert_thread(osb);
 	wake_up(&journal->j_checkpointed);
 finally:
-	mlog_exit(status);
 	return status;
 }
 
@@ -425,9 +422,8 @@ int ocfs2_extend_trans(handle_t *handle, int nblocks)
 		return 0;
 
 	old_nblocks = handle->h_buffer_credits;
-	mlog_entry_void();
 
-	mlog(0, "Trying to extend transaction by %d blocks\n", nblocks);
+	trace_ocfs2_extend_trans(old_nblocks, nblocks);
 
 #ifdef CONFIG_OCFS2_DEBUG_FS
 	status = 1;
@@ -440,9 +436,7 @@ int ocfs2_extend_trans(handle_t *handle, int nblocks)
 #endif
 
 	if (status > 0) {
-		mlog(0,
-		     "jbd2_journal_extend failed, trying "
-		     "jbd2_journal_restart\n");
+		trace_ocfs2_extend_trans_restart(old_nblocks + nblocks);
 		status = jbd2_journal_restart(handle,
 					      old_nblocks + nblocks);
 		if (status < 0) {
@@ -453,8 +447,6 @@ int ocfs2_extend_trans(handle_t *handle, int nblocks)
 
 	status = 0;
 bail:
-
-	mlog_exit(status);
 	return status;
 }
 
@@ -622,12 +614,9 @@ static int __ocfs2_journal_access(handle_t *handle,
 	BUG_ON(!handle);
 	BUG_ON(!bh);
 
-	mlog_entry("bh->b_blocknr=%llu, type=%d (\"%s\"), bh->b_size = %zu\n",
-		   (unsigned long long)bh->b_blocknr, type,
-		   (type == OCFS2_JOURNAL_ACCESS_CREATE) ?
-		   "OCFS2_JOURNAL_ACCESS_CREATE" :
-		   "OCFS2_JOURNAL_ACCESS_WRITE",
-		   bh->b_size);
+	trace_ocfs2_journal_access(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		(unsigned long long)bh->b_blocknr, type, bh->b_size);
 
 	/* we can safely remove this assertion after testing. */
 	if (!buffer_uptodate(bh)) {
@@ -668,7 +657,6 @@ static int __ocfs2_journal_access(handle_t *handle,
 		mlog(ML_ERROR, "Error %d getting %d access to buffer!\n",
 		     status, type);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -737,13 +725,10 @@ void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh)
 {
 	int status;
 
-	mlog_entry("(bh->b_blocknr=%llu)\n",
-		   (unsigned long long)bh->b_blocknr);
+	trace_ocfs2_journal_dirty((unsigned long long)bh->b_blocknr);
 
 	status = jbd2_journal_dirty_metadata(handle, bh);
 	BUG_ON(status);
-
-	mlog_exit_void();
 }
 
 #define OCFS2_DEFAULT_COMMIT_INTERVAL	(HZ * JBD2_DEFAULT_MAX_COMMIT_AGE)
@@ -775,8 +760,6 @@ int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
 	struct ocfs2_super *osb;
 	int inode_lock = 0;
 
-	mlog_entry_void();
-
 	BUG_ON(!journal);
 
 	osb = journal->j_osb;
@@ -820,10 +803,9 @@ int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
 		goto done;
 	}
 
-	mlog(0, "inode->i_size = %lld\n", inode->i_size);
-	mlog(0, "inode->i_blocks = %llu\n",
-			(unsigned long long)inode->i_blocks);
-	mlog(0, "inode->ip_clusters = %u\n", OCFS2_I(inode)->ip_clusters);
+	trace_ocfs2_journal_init(inode->i_size,
+				 (unsigned long long)inode->i_blocks,
+				 OCFS2_I(inode)->ip_clusters);
 
 	/* call the kernels journal init function now */
 	j_journal = jbd2_journal_init_inode(inode);
@@ -833,8 +815,7 @@ int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
 		goto done;
 	}
 
-	mlog(0, "Returned from jbd2_journal_init_inode\n");
-	mlog(0, "j_journal->j_maxlen = %u\n", j_journal->j_maxlen);
+	trace_ocfs2_journal_init_maxlen(j_journal->j_maxlen);
 
 	*dirty = (le32_to_cpu(di->id1.journal1.ij_flags) &
 		  OCFS2_JOURNAL_DIRTY_FL);
@@ -859,7 +840,6 @@ done:
 		}
 	}
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -882,8 +862,6 @@ static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
 	struct buffer_head *bh = journal->j_bh;
 	struct ocfs2_dinode *fe;
 
-	mlog_entry_void();
-
 	fe = (struct ocfs2_dinode *)bh->b_data;
 
 	/* The journal bh on the osb always comes from ocfs2_journal_init()
@@ -906,7 +884,6 @@ static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
 	if (status < 0)
 		mlog_errno(status);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -921,8 +898,6 @@ void ocfs2_journal_shutdown(struct ocfs2_super *osb)
 	struct inode *inode = NULL;
 	int num_running_trans = 0;
 
-	mlog_entry_void();
-
 	BUG_ON(!osb);
 
 	journal = osb->journal;
@@ -939,10 +914,7 @@ void ocfs2_journal_shutdown(struct ocfs2_super *osb)
 		BUG();
 
 	num_running_trans = atomic_read(&(osb->journal->j_num_trans));
-	if (num_running_trans > 0)
-		mlog(0, "Shutting down journal: must wait on %d "
-		     "running transactions!\n",
-		     num_running_trans);
+	trace_ocfs2_journal_shutdown(num_running_trans);
 
 	/* Do a commit_cache here. It will flush our journal, *and*
 	 * release any locks that are still held.
@@ -955,7 +927,7 @@ void ocfs2_journal_shutdown(struct ocfs2_super *osb)
 	 * completely destroy the journal. */
 	if (osb->commit_task) {
 		/* Wait for the commit thread */
-		mlog(0, "Waiting for ocfs2commit to exit....\n");
+		trace_ocfs2_journal_shutdown_wait(osb->commit_task);
 		kthread_stop(osb->commit_task);
 		osb->commit_task = NULL;
 	}
@@ -998,7 +970,6 @@ void ocfs2_journal_shutdown(struct ocfs2_super *osb)
 done:
 	if (inode)
 		iput(inode);
-	mlog_exit_void();
 }
 
 static void ocfs2_clear_journal_error(struct super_block *sb,
@@ -1024,8 +995,6 @@ int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed)
 	int status = 0;
 	struct ocfs2_super *osb;
 
-	mlog_entry_void();
-
 	BUG_ON(!journal);
 
 	osb = journal->j_osb;
@@ -1059,7 +1028,6 @@ int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed)
 		osb->commit_task = NULL;
 
 done:
-	mlog_exit(status);
 	return status;
 }
 
@@ -1070,8 +1038,6 @@ int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full)
 {
 	int status;
 
-	mlog_entry_void();
-
 	BUG_ON(!journal);
 
 	status = jbd2_journal_wipe(journal->j_journal, full);
@@ -1085,7 +1051,6 @@ int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full)
 		mlog_errno(status);
 
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -1124,8 +1089,6 @@ static int ocfs2_force_read_journal(struct inode *inode)
 #define CONCURRENT_JOURNAL_FILL 32ULL
 	struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL];
 
-	mlog_entry_void();
-
 	memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL);
 
 	num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, inode->i_size);
@@ -1161,7 +1124,6 @@ static int ocfs2_force_read_journal(struct inode *inode)
 bail:
 	for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++)
 		brelse(bhs[i]);
-	mlog_exit(status);
 	return status;
 }
 
@@ -1185,7 +1147,7 @@ struct ocfs2_la_recovery_item {
  */
 void ocfs2_complete_recovery(struct work_struct *work)
 {
-	int ret;
+	int ret = 0;
 	struct ocfs2_journal *journal =
 		container_of(work, struct ocfs2_journal, j_recovery_work);
 	struct ocfs2_super *osb = journal->j_osb;
@@ -1194,9 +1156,8 @@ void ocfs2_complete_recovery(struct work_struct *work)
 	struct ocfs2_quota_recovery *qrec;
 	LIST_HEAD(tmp_la_list);
 
-	mlog_entry_void();
-
-	mlog(0, "completing recovery from keventd\n");
+	trace_ocfs2_complete_recovery(
+		(unsigned long long)OCFS2_I(journal->j_inode)->ip_blkno);
 
 	spin_lock(&journal->j_lock);
 	list_splice_init(&journal->j_la_cleanups, &tmp_la_list);
@@ -1205,15 +1166,18 @@ void ocfs2_complete_recovery(struct work_struct *work)
 	list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) {
 		list_del_init(&item->lri_list);
 
-		mlog(0, "Complete recovery for slot %d\n", item->lri_slot);
-
 		ocfs2_wait_on_quotas(osb);
 
 		la_dinode = item->lri_la_dinode;
-		if (la_dinode) {
-			mlog(0, "Clean up local alloc %llu\n",
-			     (unsigned long long)le64_to_cpu(la_dinode->i_blkno));
+		tl_dinode = item->lri_tl_dinode;
+		qrec = item->lri_qrec;
+
+		trace_ocfs2_complete_recovery_slot(item->lri_slot,
+			la_dinode ? le64_to_cpu(la_dinode->i_blkno) : 0,
+			tl_dinode ? le64_to_cpu(tl_dinode->i_blkno) : 0,
+			qrec);
 
+		if (la_dinode) {
 			ret = ocfs2_complete_local_alloc_recovery(osb,
 								  la_dinode);
 			if (ret < 0)
@@ -1222,11 +1186,7 @@ void ocfs2_complete_recovery(struct work_struct *work)
 			kfree(la_dinode);
 		}
 
-		tl_dinode = item->lri_tl_dinode;
 		if (tl_dinode) {
-			mlog(0, "Clean up truncate log %llu\n",
-			     (unsigned long long)le64_to_cpu(tl_dinode->i_blkno));
-
 			ret = ocfs2_complete_truncate_log_recovery(osb,
 								   tl_dinode);
 			if (ret < 0)
@@ -1239,9 +1199,7 @@ void ocfs2_complete_recovery(struct work_struct *work)
 		if (ret < 0)
 			mlog_errno(ret);
 
-		qrec = item->lri_qrec;
 		if (qrec) {
-			mlog(0, "Recovering quota files");
 			ret = ocfs2_finish_quota_recovery(osb, qrec,
 							  item->lri_slot);
 			if (ret < 0)
@@ -1252,8 +1210,7 @@ void ocfs2_complete_recovery(struct work_struct *work)
 		kfree(item);
 	}
 
-	mlog(0, "Recovery completion\n");
-	mlog_exit_void();
+	trace_ocfs2_complete_recovery_end(ret);
 }
 
 /* NOTE: This function always eats your references to la_dinode and
@@ -1339,8 +1296,6 @@ static int __ocfs2_recovery_thread(void *arg)
 	int rm_quota_used = 0, i;
 	struct ocfs2_quota_recovery *qrec;
 
-	mlog_entry_void();
-
 	status = ocfs2_wait_on_mount(osb);
 	if (status < 0) {
 		goto bail;
@@ -1372,15 +1327,12 @@ restart:
 		 * clear it until ocfs2_recover_node() has succeeded. */
 		node_num = rm->rm_entries[0];
 		spin_unlock(&osb->osb_lock);
-		mlog(0, "checking node %d\n", node_num);
 		slot_num = ocfs2_node_num_to_slot(osb, node_num);
+		trace_ocfs2_recovery_thread_node(node_num, slot_num);
 		if (slot_num == -ENOENT) {
 			status = 0;
-			mlog(0, "no slot for this node, so no recovery"
-			     "required.\n");
 			goto skip_recovery;
 		}
-		mlog(0, "node %d was using slot %d\n", node_num, slot_num);
 
 		/* It is a bit subtle with quota recovery. We cannot do it
 		 * immediately because we have to obtain cluster locks from
@@ -1407,7 +1359,7 @@ skip_recovery:
 		spin_lock(&osb->osb_lock);
 	}
 	spin_unlock(&osb->osb_lock);
-	mlog(0, "All nodes recovered\n");
+	trace_ocfs2_recovery_thread_end(status);
 
 	/* Refresh all journal recovery generations from disk */
 	status = ocfs2_check_journals_nolocks(osb);
@@ -1451,7 +1403,6 @@ bail:
 	if (rm_quota)
 		kfree(rm_quota);
 
-	mlog_exit(status);
 	/* no one is callint kthread_stop() for us so the kthread() api
 	 * requires that we call do_exit().  And it isn't exported, but
 	 * complete_and_exit() seems to be a minimal wrapper around it. */
@@ -1461,19 +1412,15 @@ bail:
 
 void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num)
 {
-	mlog_entry("(node_num=%d, osb->node_num = %d)\n",
-		   node_num, osb->node_num);
-
 	mutex_lock(&osb->recovery_lock);
-	if (osb->disable_recovery)
-		goto out;
 
-	/* People waiting on recovery will wait on
-	 * the recovery map to empty. */
-	if (ocfs2_recovery_map_set(osb, node_num))
-		mlog(0, "node %d already in recovery map.\n", node_num);
+	trace_ocfs2_recovery_thread(node_num, osb->node_num,
+		osb->disable_recovery, osb->recovery_thread_task,
+		osb->disable_recovery ?
+		-1 : ocfs2_recovery_map_set(osb, node_num));
 
-	mlog(0, "starting recovery thread...\n");
+	if (osb->disable_recovery)
+		goto out;
 
 	if (osb->recovery_thread_task)
 		goto out;
@@ -1488,8 +1435,6 @@ void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num)
 out:
 	mutex_unlock(&osb->recovery_lock);
 	wake_up(&osb->recovery_event);
-
-	mlog_exit_void();
 }
 
 static int ocfs2_read_journal_inode(struct ocfs2_super *osb,
@@ -1563,7 +1508,7 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
 	 * If not, it needs recovery.
 	 */
 	if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) {
-		mlog(0, "Slot %u already recovered (old/new=%u/%u)\n", slot_num,
+		trace_ocfs2_replay_journal_recovered(slot_num,
 		     osb->slot_recovery_generations[slot_num], slot_reco_gen);
 		osb->slot_recovery_generations[slot_num] = slot_reco_gen;
 		status = -EBUSY;
@@ -1574,7 +1519,7 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
 
 	status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
 	if (status < 0) {
-		mlog(0, "status returned from ocfs2_inode_lock=%d\n", status);
+		trace_ocfs2_replay_journal_lock_err(status);
 		if (status != -ERESTARTSYS)
 			mlog(ML_ERROR, "Could not lock journal!\n");
 		goto done;
@@ -1587,7 +1532,7 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
 	slot_reco_gen = ocfs2_get_recovery_generation(fe);
 
 	if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) {
-		mlog(0, "No recovery required for node %d\n", node_num);
+		trace_ocfs2_replay_journal_skip(node_num);
 		/* Refresh recovery generation for the slot */
 		osb->slot_recovery_generations[slot_num] = slot_reco_gen;
 		goto done;
@@ -1608,7 +1553,6 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
 		goto done;
 	}
 
-	mlog(0, "calling journal_init_inode\n");
 	journal = jbd2_journal_init_inode(inode);
 	if (journal == NULL) {
 		mlog(ML_ERROR, "Linux journal layer error\n");
@@ -1628,7 +1572,6 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
 	ocfs2_clear_journal_error(osb->sb, journal, slot_num);
 
 	/* wipe the journal */
-	mlog(0, "flushing the journal.\n");
 	jbd2_journal_lock_updates(journal);
 	status = jbd2_journal_flush(journal);
 	jbd2_journal_unlock_updates(journal);
@@ -1665,7 +1608,6 @@ done:
 
 	brelse(bh);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -1688,8 +1630,7 @@ static int ocfs2_recover_node(struct ocfs2_super *osb,
 	struct ocfs2_dinode *la_copy = NULL;
 	struct ocfs2_dinode *tl_copy = NULL;
 
-	mlog_entry("(node_num=%d, slot_num=%d, osb->node_num = %d)\n",
-		   node_num, slot_num, osb->node_num);
+	trace_ocfs2_recover_node(node_num, slot_num, osb->node_num);
 
 	/* Should not ever be called to recover ourselves -- in that
 	 * case we should've called ocfs2_journal_load instead. */
@@ -1698,9 +1639,7 @@ static int ocfs2_recover_node(struct ocfs2_super *osb,
 	status = ocfs2_replay_journal(osb, node_num, slot_num);
 	if (status < 0) {
 		if (status == -EBUSY) {
-			mlog(0, "Skipping recovery for slot %u (node %u) "
-			     "as another node has recovered it\n", slot_num,
-			     node_num);
+			trace_ocfs2_recover_node_skip(slot_num, node_num);
 			status = 0;
 			goto done;
 		}
@@ -1735,7 +1674,6 @@ static int ocfs2_recover_node(struct ocfs2_super *osb,
 	status = 0;
 done:
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -1808,8 +1746,8 @@ int ocfs2_mark_dead_nodes(struct ocfs2_super *osb)
 		spin_lock(&osb->osb_lock);
 		osb->slot_recovery_generations[i] = gen;
 
-		mlog(0, "Slot %u recovery generation is %u\n", i,
-		     osb->slot_recovery_generations[i]);
+		trace_ocfs2_mark_dead_nodes(i,
+					    osb->slot_recovery_generations[i]);
 
 		if (i == osb->slot_num) {
 			spin_unlock(&osb->osb_lock);
@@ -1845,7 +1783,6 @@ int ocfs2_mark_dead_nodes(struct ocfs2_super *osb)
 
 	status = 0;
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -1884,11 +1821,12 @@ void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
 
 	os = &osb->osb_orphan_scan;
 
-	mlog(0, "Begin orphan scan\n");
-
 	if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
 		goto out;
 
+	trace_ocfs2_queue_orphan_scan_begin(os->os_count, os->os_seqno,
+					    atomic_read(&os->os_state));
+
 	status = ocfs2_orphan_scan_lock(osb, &seqno);
 	if (status < 0) {
 		if (status != -EAGAIN)
@@ -1918,7 +1856,8 @@ void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
 unlock:
 	ocfs2_orphan_scan_unlock(osb, seqno);
 out:
-	mlog(0, "Orphan scan completed\n");
+	trace_ocfs2_queue_orphan_scan_end(os->os_count, os->os_seqno,
+					  atomic_read(&os->os_state));
 	return;
 }
 
@@ -2002,8 +1941,7 @@ static int ocfs2_orphan_filldir(void *priv, const char *name, int name_len,
 	if (IS_ERR(iter))
 		return 0;
 
-	mlog(0, "queue orphan %llu\n",
-	     (unsigned long long)OCFS2_I(iter)->ip_blkno);
+	trace_ocfs2_orphan_filldir((unsigned long long)OCFS2_I(iter)->ip_blkno);
 	/* No locking is required for the next_orphan queue as there
 	 * is only ever a single process doing orphan recovery. */
 	OCFS2_I(iter)->ip_next_orphan = p->head;
@@ -2119,7 +2057,7 @@ static int ocfs2_recover_orphans(struct ocfs2_super *osb,
 	struct inode *iter;
 	struct ocfs2_inode_info *oi;
 
-	mlog(0, "Recover inodes from orphan dir in slot %d\n", slot);
+	trace_ocfs2_recover_orphans(slot);
 
 	ocfs2_mark_recovering_orphan_dir(osb, slot);
 	ret = ocfs2_queue_orphans(osb, slot, &inode);
@@ -2132,7 +2070,8 @@ static int ocfs2_recover_orphans(struct ocfs2_super *osb,
 
 	while (inode) {
 		oi = OCFS2_I(inode);
-		mlog(0, "iput orphan %llu\n", (unsigned long long)oi->ip_blkno);
+		trace_ocfs2_recover_orphans_iput(
+					(unsigned long long)oi->ip_blkno);
 
 		iter = oi->ip_next_orphan;
 
@@ -2170,6 +2109,7 @@ static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota)
 	 * MOUNTED flag, but this is set right before
 	 * dismount_volume() so we can trust it. */
 	if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) {
+		trace_ocfs2_wait_on_mount(VOLUME_DISABLED);
 		mlog(0, "mount error, exiting!\n");
 		return -EBUSY;
 	}
diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index ec6adbf..210c352 100644
--- a/fs/ocfs2/localalloc.c
+++ b/fs/ocfs2/localalloc.c
@@ -29,7 +29,6 @@
 #include <linux/highmem.h>
 #include <linux/bitops.h>
 
-#define MLOG_MASK_PREFIX ML_DISK_ALLOC
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -43,6 +42,7 @@
 #include "suballoc.h"
 #include "super.h"
 #include "sysfile.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -201,8 +201,7 @@ void ocfs2_la_set_sizes(struct ocfs2_super *osb, int requested_mb)
 	la_max_mb = ocfs2_clusters_to_megabytes(sb,
 						ocfs2_local_alloc_size(sb) * 8);
 
-	mlog(0, "requested: %dM, max: %uM, default: %uM\n",
-	     requested_mb, la_max_mb, la_default_mb);
+	trace_ocfs2_la_set_sizes(requested_mb, la_max_mb, la_default_mb);
 
 	if (requested_mb == -1) {
 		/* No user request - use defaults */
@@ -276,8 +275,8 @@ int ocfs2_alloc_should_use_local(struct ocfs2_super *osb, u64 bits)
 
 	ret = 1;
 bail:
-	mlog(0, "state=%d, bits=%llu, la_bits=%d, ret=%d\n",
-	     osb->local_alloc_state, (unsigned long long)bits, la_bits, ret);
+	trace_ocfs2_alloc_should_use_local(
+	     (unsigned long long)bits, osb->local_alloc_state, la_bits, ret);
 	spin_unlock(&osb->osb_lock);
 	return ret;
 }
@@ -291,8 +290,6 @@ int ocfs2_load_local_alloc(struct ocfs2_super *osb)
 	struct inode *inode = NULL;
 	struct ocfs2_local_alloc *la;
 
-	mlog_entry_void();
-
 	if (osb->local_alloc_bits == 0)
 		goto bail;
 
@@ -364,9 +361,10 @@ bail:
 	if (inode)
 		iput(inode);
 
-	mlog(0, "Local alloc window bits = %d\n", osb->local_alloc_bits);
+	trace_ocfs2_load_local_alloc(osb->local_alloc_bits);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -388,8 +386,6 @@ void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
 	struct ocfs2_dinode *alloc_copy = NULL;
 	struct ocfs2_dinode *alloc = NULL;
 
-	mlog_entry_void();
-
 	cancel_delayed_work(&osb->la_enable_wq);
 	flush_workqueue(ocfs2_wq);
 
@@ -482,8 +478,6 @@ out:
 
 	if (alloc_copy)
 		kfree(alloc_copy);
-
-	mlog_exit_void();
 }
 
 /*
@@ -502,7 +496,7 @@ int ocfs2_begin_local_alloc_recovery(struct ocfs2_super *osb,
 	struct inode *inode = NULL;
 	struct ocfs2_dinode *alloc;
 
-	mlog_entry("(slot_num = %d)\n", slot_num);
+	trace_ocfs2_begin_local_alloc_recovery(slot_num);
 
 	*alloc_copy = NULL;
 
@@ -552,7 +546,8 @@ bail:
 		iput(inode);
 	}
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -570,8 +565,6 @@ int ocfs2_complete_local_alloc_recovery(struct ocfs2_super *osb,
 	struct buffer_head *main_bm_bh = NULL;
 	struct inode *main_bm_inode;
 
-	mlog_entry_void();
-
 	main_bm_inode = ocfs2_get_system_file_inode(osb,
 						    GLOBAL_BITMAP_SYSTEM_INODE,
 						    OCFS2_INVALID_SLOT);
@@ -620,7 +613,8 @@ out_mutex:
 out:
 	if (!status)
 		ocfs2_init_steal_slots(osb);
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -640,8 +634,6 @@ int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
 	struct inode *local_alloc_inode;
 	unsigned int free_bits;
 
-	mlog_entry_void();
-
 	BUG_ON(!ac);
 
 	local_alloc_inode =
@@ -712,10 +704,6 @@ int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
 			goto bail;
 	}
 
-	if (ac->ac_max_block)
-		mlog(0, "Calling in_range for max block %llu\n",
-		     (unsigned long long)ac->ac_max_block);
-
 	ac->ac_inode = local_alloc_inode;
 	/* We should never use localalloc from another slot */
 	ac->ac_alloc_slot = osb->slot_num;
@@ -729,10 +717,12 @@ bail:
 		iput(local_alloc_inode);
 	}
 
-	mlog(0, "bits=%d, slot=%d, ret=%d\n", bits_wanted, osb->slot_num,
-	     status);
+	trace_ocfs2_reserve_local_alloc_bits(
+		(unsigned long long)ac->ac_max_block,
+		bits_wanted, osb->slot_num, status);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -749,7 +739,6 @@ int ocfs2_claim_local_alloc_bits(struct ocfs2_super *osb,
 	struct ocfs2_dinode *alloc;
 	struct ocfs2_local_alloc *la;
 
-	mlog_entry_void();
 	BUG_ON(ac->ac_which != OCFS2_AC_USE_LOCAL);
 
 	local_alloc_inode = ac->ac_inode;
@@ -788,7 +777,8 @@ int ocfs2_claim_local_alloc_bits(struct ocfs2_super *osb,
 	ocfs2_journal_dirty(handle, osb->local_alloc_bh);
 
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -799,13 +789,11 @@ static u32 ocfs2_local_alloc_count_bits(struct ocfs2_dinode *alloc)
 	u32 count = 0;
 	struct ocfs2_local_alloc *la = OCFS2_LOCAL_ALLOC(alloc);
 
-	mlog_entry_void();
-
 	buffer = la->la_bitmap;
 	for (i = 0; i < le16_to_cpu(la->la_size); i++)
 		count += hweight8(buffer[i]);
 
-	mlog_exit(count);
+	trace_ocfs2_local_alloc_count_bits(count);
 	return count;
 }
 
@@ -820,10 +808,7 @@ static int ocfs2_local_alloc_find_clear_bits(struct ocfs2_super *osb,
 	void *bitmap = NULL;
 	struct ocfs2_reservation_map *resmap = &osb->osb_la_resmap;
 
-	mlog_entry("(numbits wanted = %u)\n", *numbits);
-
 	if (!alloc->id1.bitmap1.i_total) {
-		mlog(0, "No bits in my window!\n");
 		bitoff = -1;
 		goto bail;
 	}
@@ -883,8 +868,7 @@ static int ocfs2_local_alloc_find_clear_bits(struct ocfs2_super *osb,
 		}
 	}
 
-	mlog(0, "Exiting loop, bitoff = %d, numfound = %d\n", bitoff,
-	     numfound);
+	trace_ocfs2_local_alloc_find_clear_bits_search_bitmap(bitoff, numfound);
 
 	if (numfound == *numbits)
 		bitoff = startoff - numfound;
@@ -895,7 +879,10 @@ bail:
 	if (local_resv)
 		ocfs2_resv_discard(resmap, resv);
 
-	mlog_exit(bitoff);
+	trace_ocfs2_local_alloc_find_clear_bits(*numbits,
+		le32_to_cpu(alloc->id1.bitmap1.i_total),
+		bitoff, numfound);
+
 	return bitoff;
 }
 
@@ -903,15 +890,12 @@ static void ocfs2_clear_local_alloc(struct ocfs2_dinode *alloc)
 {
 	struct ocfs2_local_alloc *la = OCFS2_LOCAL_ALLOC(alloc);
 	int i;
-	mlog_entry_void();
 
 	alloc->id1.bitmap1.i_total = 0;
 	alloc->id1.bitmap1.i_used = 0;
 	la->la_bm_off = 0;
 	for(i = 0; i < le16_to_cpu(la->la_size); i++)
 		la->la_bitmap[i] = 0;
-
-	mlog_exit_void();
 }
 
 #if 0
@@ -952,18 +936,16 @@ static int ocfs2_sync_local_to_main(struct ocfs2_super *osb,
 	void *bitmap;
 	struct ocfs2_local_alloc *la = OCFS2_LOCAL_ALLOC(alloc);
 
-	mlog_entry("total = %u, used = %u\n",
-		   le32_to_cpu(alloc->id1.bitmap1.i_total),
-		   le32_to_cpu(alloc->id1.bitmap1.i_used));
+	trace_ocfs2_sync_local_to_main(
+	     le32_to_cpu(alloc->id1.bitmap1.i_total),
+	     le32_to_cpu(alloc->id1.bitmap1.i_used));
 
 	if (!alloc->id1.bitmap1.i_total) {
-		mlog(0, "nothing to sync!\n");
 		goto bail;
 	}
 
 	if (le32_to_cpu(alloc->id1.bitmap1.i_used) ==
 	    le32_to_cpu(alloc->id1.bitmap1.i_total)) {
-		mlog(0, "all bits were taken!\n");
 		goto bail;
 	}
 
@@ -985,8 +967,7 @@ static int ocfs2_sync_local_to_main(struct ocfs2_super *osb,
 				ocfs2_clusters_to_blocks(osb->sb,
 							 start - count);
 
-			mlog(0, "freeing %u bits starting at local alloc bit "
-			     "%u (la_start_blk = %llu, blkno = %llu)\n",
+			trace_ocfs2_sync_local_to_main_free(
 			     count, start - count,
 			     (unsigned long long)la_start_blk,
 			     (unsigned long long)blkno);
@@ -1007,7 +988,8 @@ static int ocfs2_sync_local_to_main(struct ocfs2_super *osb,
 	}
 
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1132,7 +1114,8 @@ bail:
 		*ac = NULL;
 	}
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1148,17 +1131,12 @@ static int ocfs2_local_alloc_new_window(struct ocfs2_super *osb,
 	struct ocfs2_dinode *alloc = NULL;
 	struct ocfs2_local_alloc *la;
 
-	mlog_entry_void();
-
 	alloc = (struct ocfs2_dinode *) osb->local_alloc_bh->b_data;
 	la = OCFS2_LOCAL_ALLOC(alloc);
 
-	if (alloc->id1.bitmap1.i_total)
-		mlog(0, "asking me to alloc a new window over a non-empty "
-		     "one\n");
-
-	mlog(0, "Allocating %u clusters for a new window.\n",
-	     osb->local_alloc_bits);
+	trace_ocfs2_local_alloc_new_window(
+		le32_to_cpu(alloc->id1.bitmap1.i_total),
+		osb->local_alloc_bits);
 
 	/* Instruct the allocation code to try the most recently used
 	 * cluster group. We'll re-record the group used this pass
@@ -1220,13 +1198,13 @@ retry_enospc:
 	ocfs2_resmap_restart(&osb->osb_la_resmap, cluster_count,
 			     OCFS2_LOCAL_ALLOC(alloc)->la_bitmap);
 
-	mlog(0, "New window allocated:\n");
-	mlog(0, "window la_bm_off = %u\n",
-	     OCFS2_LOCAL_ALLOC(alloc)->la_bm_off);
-	mlog(0, "window bits = %u\n", le32_to_cpu(alloc->id1.bitmap1.i_total));
+	trace_ocfs2_local_alloc_new_window_result(
+		OCFS2_LOCAL_ALLOC(alloc)->la_bm_off,
+		le32_to_cpu(alloc->id1.bitmap1.i_total));
 
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1243,8 +1221,6 @@ static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb,
 	struct ocfs2_dinode *alloc_copy = NULL;
 	struct ocfs2_alloc_context *ac = NULL;
 
-	mlog_entry_void();
-
 	ocfs2_recalc_la_window(osb, OCFS2_LA_EVENT_SLIDE);
 
 	/* This will lock the main bitmap for us. */
@@ -1324,7 +1300,8 @@ bail:
 	if (ac)
 		ocfs2_free_alloc_context(ac);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
diff --git a/fs/ocfs2/locks.c b/fs/ocfs2/locks.c
index b5cb3ed..e57c804 100644
--- a/fs/ocfs2/locks.c
+++ b/fs/ocfs2/locks.c
@@ -26,7 +26,6 @@
 #include <linux/fs.h>
 #include <linux/fcntl.h>
 
-#define MLOG_MASK_PREFIX ML_INODE
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c
index 7e32db9..3e9393c 100644
--- a/fs/ocfs2/mmap.c
+++ b/fs/ocfs2/mmap.c
@@ -31,7 +31,6 @@
 #include <linux/signal.h>
 #include <linux/rbtree.h>
 
-#define MLOG_MASK_PREFIX ML_FILE_IO
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -42,6 +41,7 @@
 #include "inode.h"
 #include "mmap.h"
 #include "super.h"
+#include "ocfs2_trace.h"
 
 
 static int ocfs2_fault(struct vm_area_struct *area, struct vm_fault *vmf)
@@ -49,13 +49,12 @@ static int ocfs2_fault(struct vm_area_struct *area, struct vm_fault *vmf)
 	sigset_t oldset;
 	int ret;
 
-	mlog_entry("(area=%p, page offset=%lu)\n", area, vmf->pgoff);
-
 	ocfs2_block_signals(&oldset);
 	ret = filemap_fault(area, vmf);
 	ocfs2_unblock_signals(&oldset);
 
-	mlog_exit_ptr(vmf->page);
+	trace_ocfs2_fault(OCFS2_I(area->vm_file->f_mapping->host)->ip_blkno,
+			  area, vmf->page, vmf->pgoff);
 	return ret;
 }
 
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index d6c25d7..28f2cc1 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -42,7 +42,6 @@
 #include <linux/highmem.h>
 #include <linux/quotaops.h>
 
-#define MLOG_MASK_PREFIX ML_NAMEI
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -63,6 +62,7 @@
 #include "uptodate.h"
 #include "xattr.h"
 #include "acl.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -106,17 +106,15 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
 	struct dentry *ret;
 	struct ocfs2_inode_info *oi;
 
-	mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
-		   dentry->d_name.len, dentry->d_name.name);
+	trace_ocfs2_lookup(dir, dentry, dentry->d_name.len,
+			   dentry->d_name.name,
+			   (unsigned long long)OCFS2_I(dir)->ip_blkno, 0);
 
 	if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) {
 		ret = ERR_PTR(-ENAMETOOLONG);
 		goto bail;
 	}
 
-	mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len,
-	     dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno);
-
 	status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT);
 	if (status < 0) {
 		if (status != -ENOENT)
@@ -182,7 +180,7 @@ bail_unlock:
 
 bail:
 
-	mlog_exit_ptr(ret);
+	trace_ocfs2_lookup_ret(ret);
 
 	return ret;
 }
@@ -235,9 +233,9 @@ static int ocfs2_mknod(struct inode *dir,
 	sigset_t oldset;
 	int did_block_signals = 0;
 
-	mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode,
-		   (unsigned long)dev, dentry->d_name.len,
-		   dentry->d_name.name);
+	trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name,
+			  (unsigned long long)OCFS2_I(dir)->ip_blkno,
+			  (unsigned long)dev, mode);
 
 	dquot_initialize(dir);
 
@@ -354,10 +352,6 @@ static int ocfs2_mknod(struct inode *dir,
 		goto leave;
 	did_quota_inode = 1;
 
-	mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry,
-		   inode->i_mode, (unsigned long)dev, dentry->d_name.len,
-		   dentry->d_name.name);
-
 	/* do the real work now. */
 	status = ocfs2_mknod_locked(osb, dir, inode, dev,
 				    &new_fe_bh, parent_fe_bh, handle,
@@ -436,9 +430,6 @@ leave:
 	if (did_block_signals)
 		ocfs2_unblock_signals(&oldset);
 
-	if (status == -ENOSPC)
-		mlog(0, "Disk is full\n");
-
 	brelse(new_fe_bh);
 	brelse(parent_fe_bh);
 	kfree(si.name);
@@ -466,7 +457,8 @@ leave:
 		iput(inode);
 	}
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 
 	return status;
 }
@@ -577,7 +569,8 @@ leave:
 		}
 	}
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -615,10 +608,11 @@ static int ocfs2_mkdir(struct inode *dir,
 {
 	int ret;
 
-	mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
-		   dentry->d_name.len, dentry->d_name.name);
+	trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name,
+			  OCFS2_I(dir)->ip_blkno, mode);
 	ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0);
-	mlog_exit(ret);
+	if (ret)
+		mlog_errno(ret);
 
 	return ret;
 }
@@ -630,10 +624,11 @@ static int ocfs2_create(struct inode *dir,
 {
 	int ret;
 
-	mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
-		   dentry->d_name.len, dentry->d_name.name);
+	trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name,
+			   (unsigned long long)OCFS2_I(dir)->ip_blkno, mode);
 	ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0);
-	mlog_exit(ret);
+	if (ret)
+		mlog_errno(ret);
 
 	return ret;
 }
@@ -652,9 +647,9 @@ static int ocfs2_link(struct dentry *old_dentry,
 	struct ocfs2_dir_lookup_result lookup = { NULL, };
 	sigset_t oldset;
 
-	mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino,
-		   old_dentry->d_name.len, old_dentry->d_name.name,
-		   dentry->d_name.len, dentry->d_name.name);
+	trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno,
+			 old_dentry->d_name.len, old_dentry->d_name.name,
+			 dentry->d_name.len, dentry->d_name.name);
 
 	if (S_ISDIR(inode->i_mode))
 		return -EPERM;
@@ -757,7 +752,8 @@ out:
 
 	ocfs2_free_dir_lookup_result(&lookup);
 
-	mlog_exit(err);
+	if (err)
+		mlog_errno(err);
 
 	return err;
 }
@@ -809,19 +805,17 @@ static int ocfs2_unlink(struct inode *dir,
 	struct ocfs2_dir_lookup_result lookup = { NULL, };
 	struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
 
-	mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
-		   dentry->d_name.len, dentry->d_name.name);
+	trace_ocfs2_unlink(dir, dentry, dentry->d_name.len,
+			   dentry->d_name.name,
+			   (unsigned long long)OCFS2_I(dir)->ip_blkno,
+			   (unsigned long long)OCFS2_I(inode)->ip_blkno);
 
 	dquot_initialize(dir);
 
 	BUG_ON(dentry->d_parent->d_inode != dir);
 
-	mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno);
-
-	if (inode == osb->root_inode) {
-		mlog(0, "Cannot delete the root directory\n");
+	if (inode == osb->root_inode)
 		return -EPERM;
-	}
 
 	status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
 					 OI_LS_PARENT);
@@ -843,9 +837,10 @@ static int ocfs2_unlink(struct inode *dir,
 	if (OCFS2_I(inode)->ip_blkno != blkno) {
 		status = -ENOENT;
 
-		mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n",
-		     (unsigned long long)OCFS2_I(inode)->ip_blkno,
-		     (unsigned long long)blkno, OCFS2_I(inode)->ip_flags);
+		trace_ocfs2_unlink_noent(
+				(unsigned long long)OCFS2_I(inode)->ip_blkno,
+				(unsigned long long)blkno,
+				OCFS2_I(inode)->ip_flags);
 		goto leave;
 	}
 
@@ -954,7 +949,8 @@ leave:
 	ocfs2_free_dir_lookup_result(&orphan_insert);
 	ocfs2_free_dir_lookup_result(&lookup);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 
 	return status;
 }
@@ -975,9 +971,8 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
 	struct buffer_head **tmpbh;
 	struct inode *tmpinode;
 
-	mlog_entry("(inode1 = %llu, inode2 = %llu)\n",
-		   (unsigned long long)oi1->ip_blkno,
-		   (unsigned long long)oi2->ip_blkno);
+	trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno,
+				(unsigned long long)oi2->ip_blkno);
 
 	if (*bh1)
 		*bh1 = NULL;
@@ -988,7 +983,6 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
 	if (oi1->ip_blkno != oi2->ip_blkno) {
 		if (oi1->ip_blkno < oi2->ip_blkno) {
 			/* switch id1 and id2 around */
-			mlog(0, "switching them around...\n");
 			tmpbh = bh2;
 			bh2 = bh1;
 			bh1 = tmpbh;
@@ -1024,8 +1018,13 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
 			mlog_errno(status);
 	}
 
+	trace_ocfs2_double_lock_end(
+			(unsigned long long)OCFS2_I(inode1)->ip_blkno,
+			(unsigned long long)OCFS2_I(inode2)->ip_blkno);
+
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1067,10 +1066,9 @@ static int ocfs2_rename(struct inode *old_dir,
 	/* At some point it might be nice to break this function up a
 	 * bit. */
 
-	mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n",
-		   old_dir, old_dentry, new_dir, new_dentry,
-		   old_dentry->d_name.len, old_dentry->d_name.name,
-		   new_dentry->d_name.len, new_dentry->d_name.name);
+	trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry,
+			   old_dentry->d_name.len, old_dentry->d_name.name,
+			   new_dentry->d_name.len, new_dentry->d_name.name);
 
 	dquot_initialize(old_dir);
 	dquot_initialize(new_dir);
@@ -1227,16 +1225,15 @@ static int ocfs2_rename(struct inode *old_dir,
 		if (!new_inode) {
 			status = -EACCES;
 
-			mlog(0, "We found an inode for name %.*s but VFS "
-			     "didn't give us one.\n", new_dentry->d_name.len,
-			     new_dentry->d_name.name);
+			trace_ocfs2_rename_target_exists(new_dentry->d_name.len,
+						new_dentry->d_name.name);
 			goto bail;
 		}
 
 		if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) {
 			status = -EACCES;
 
-			mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n",
+			trace_ocfs2_rename_disagree(
 			     (unsigned long long)OCFS2_I(new_inode)->ip_blkno,
 			     (unsigned long long)newfe_blkno,
 			     OCFS2_I(new_inode)->ip_flags);
@@ -1259,8 +1256,7 @@ static int ocfs2_rename(struct inode *old_dir,
 
 		newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
 
-		mlog(0, "aha rename over existing... new_blkno=%llu "
-		     "newfebh=%p bhblocknr=%llu\n",
+		trace_ocfs2_rename_over_existing(
 		     (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
 		     (unsigned long long)newfe_bh->b_blocknr : 0ULL);
 
@@ -1476,7 +1472,8 @@ bail:
 	brelse(old_dir_bh);
 	brelse(new_dir_bh);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 
 	return status;
 }
@@ -1501,9 +1498,8 @@ static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
 	 * write i_size + 1 bytes. */
 	blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
 
-	mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n",
-			(unsigned long long)inode->i_blocks,
-			i_size_read(inode), blocks);
+	trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks,
+					i_size_read(inode), blocks);
 
 	/* Sanity check -- make sure we're going to fit. */
 	if (bytes_left >
@@ -1579,7 +1575,8 @@ bail:
 		kfree(bhs);
 	}
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1610,8 +1607,8 @@ static int ocfs2_symlink(struct inode *dir,
 	sigset_t oldset;
 	int did_block_signals = 0;
 
-	mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir,
-		   dentry, symname, dentry->d_name.len, dentry->d_name.name);
+	trace_ocfs2_symlink_begin(dir, dentry, symname,
+				  dentry->d_name.len, dentry->d_name.name);
 
 	dquot_initialize(dir);
 
@@ -1713,9 +1710,10 @@ static int ocfs2_symlink(struct inode *dir,
 		goto bail;
 	did_quota_inode = 1;
 
-	mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry,
-		   inode->i_mode, dentry->d_name.len,
-		   dentry->d_name.name);
+	trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len,
+				   dentry->d_name.name,
+				   (unsigned long long)OCFS2_I(dir)->ip_blkno,
+				   inode->i_mode);
 
 	status = ocfs2_mknod_locked(osb, dir, inode,
 				    0, &new_fe_bh, parent_fe_bh, handle,
@@ -1835,7 +1833,8 @@ bail:
 		iput(inode);
 	}
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 
 	return status;
 }
@@ -1844,8 +1843,6 @@ static int ocfs2_blkno_stringify(u64 blkno, char *name)
 {
 	int status, namelen;
 
-	mlog_entry_void();
-
 	namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
 			   (long long)blkno);
 	if (namelen <= 0) {
@@ -1862,12 +1859,12 @@ static int ocfs2_blkno_stringify(u64 blkno, char *name)
 		goto bail;
 	}
 
-	mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name,
-	     namelen);
+	trace_ocfs2_blkno_stringify(blkno, name, namelen);
 
 	status = 0;
 bail:
-	mlog_exit(status);
+	if (status < 0)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1980,7 +1977,8 @@ out:
 		iput(orphan_dir_inode);
 	}
 
-	mlog_exit(ret);
+	if (ret)
+		mlog_errno(ret);
 	return ret;
 }
 
@@ -1997,7 +1995,8 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
 	struct ocfs2_dinode *orphan_fe;
 	struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data;
 
-	mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
+	trace_ocfs2_orphan_add_begin(
+				(unsigned long long)OCFS2_I(inode)->ip_blkno);
 
 	status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
 	if (status < 0) {
@@ -2056,13 +2055,14 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
 
 	ocfs2_journal_dirty(handle, fe_bh);
 
-	mlog(0, "Inode %llu orphaned in slot %d\n",
-	     (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num);
+	trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno,
+				   osb->slot_num);
 
 leave:
 	brelse(orphan_dir_bh);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2078,17 +2078,15 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
 	int status = 0;
 	struct ocfs2_dir_lookup_result lookup = { NULL, };
 
-	mlog_entry_void();
-
 	status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
 	if (status < 0) {
 		mlog_errno(status);
 		goto leave;
 	}
 
-	mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n",
-	     name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
-	     OCFS2_ORPHAN_NAMELEN);
+	trace_ocfs2_orphan_del(
+	     (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
+	     name, OCFS2_ORPHAN_NAMELEN);
 
 	/* find it's spot in the orphan directory */
 	status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode,
@@ -2124,7 +2122,8 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
 leave:
 	ocfs2_free_dir_lookup_result(&lookup);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2321,9 +2320,6 @@ leave:
 		iput(orphan_dir);
 	}
 
-	if (status == -ENOSPC)
-		mlog(0, "Disk is full\n");
-
 	if ((status < 0) && inode) {
 		clear_nlink(inode);
 		iput(inode);
@@ -2358,8 +2354,10 @@ int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
 	struct buffer_head *di_bh = NULL;
 	struct ocfs2_dir_lookup_result lookup = { NULL, };
 
-	mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry,
-		   dentry->d_name.len, dentry->d_name.name);
+	trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry,
+				dentry->d_name.len, dentry->d_name.name,
+				(unsigned long long)OCFS2_I(dir)->ip_blkno,
+				(unsigned long long)OCFS2_I(inode)->ip_blkno);
 
 	status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
 	if (status < 0) {
@@ -2476,7 +2474,8 @@ leave:
 
 	ocfs2_free_dir_lookup_result(&lookup);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 
 	return status;
 }
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 51cd689..4092858 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -147,6 +147,17 @@ struct ocfs2_lock_res_ops;
 
 typedef void (*ocfs2_lock_callback)(int status, unsigned long data);
 
+#ifdef CONFIG_OCFS2_FS_STATS
+struct ocfs2_lock_stats {
+	u64		ls_total;	/* Total wait in NSEC */
+	u32		ls_gets;	/* Num acquires */
+	u32		ls_fail;	/* Num failed acquires */
+
+	/* Storing max wait in usecs saves 24 bytes per inode */
+	u32		ls_max;		/* Max wait in USEC */
+};
+#endif
+
 struct ocfs2_lock_res {
 	void                    *l_priv;
 	struct ocfs2_lock_res_ops *l_ops;
@@ -182,15 +193,9 @@ struct ocfs2_lock_res {
 	struct list_head         l_debug_list;
 
 #ifdef CONFIG_OCFS2_FS_STATS
-	unsigned long long	 l_lock_num_prmode; 	   /* PR acquires */
-	unsigned long long 	 l_lock_num_exmode; 	   /* EX acquires */
-	unsigned int		 l_lock_num_prmode_failed; /* Failed PR gets */
-	unsigned int		 l_lock_num_exmode_failed; /* Failed EX gets */
-	unsigned long long	 l_lock_total_prmode; 	   /* Tot wait for PR */
-	unsigned long long	 l_lock_total_exmode; 	   /* Tot wait for EX */
-	unsigned int		 l_lock_max_prmode; 	   /* Max wait for PR */
-	unsigned int		 l_lock_max_exmode; 	   /* Max wait for EX */
-	unsigned int		 l_lock_refresh;	   /* Disk refreshes */
+	struct ocfs2_lock_stats  l_lock_prmode;		/* PR mode stats */
+	u32                      l_lock_refresh;	/* Disk refreshes */
+	struct ocfs2_lock_stats  l_lock_exmode;		/* EX mode stats */
 #endif
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 	struct lockdep_map	 l_lockdep_map;
@@ -831,18 +836,18 @@ static inline unsigned int ocfs2_clusters_to_megabytes(struct super_block *sb,
 
 static inline void _ocfs2_set_bit(unsigned int bit, unsigned long *bitmap)
 {
-	ext2_set_bit(bit, bitmap);
+	__test_and_set_bit_le(bit, bitmap);
 }
 #define ocfs2_set_bit(bit, addr) _ocfs2_set_bit((bit), (unsigned long *)(addr))
 
 static inline void _ocfs2_clear_bit(unsigned int bit, unsigned long *bitmap)
 {
-	ext2_clear_bit(bit, bitmap);
+	__test_and_clear_bit_le(bit, bitmap);
 }
 #define ocfs2_clear_bit(bit, addr) _ocfs2_clear_bit((bit), (unsigned long *)(addr))
 
-#define ocfs2_test_bit ext2_test_bit
-#define ocfs2_find_next_zero_bit ext2_find_next_zero_bit
-#define ocfs2_find_next_bit ext2_find_next_bit
+#define ocfs2_test_bit test_bit_le
+#define ocfs2_find_next_zero_bit find_next_zero_bit_le
+#define ocfs2_find_next_bit find_next_bit_le
 #endif  /* OCFS2_H */
 
diff --git a/fs/ocfs2/ocfs2_trace.h b/fs/ocfs2/ocfs2_trace.h
new file mode 100644
index 0000000..a1dae5b
--- /dev/null
+++ b/fs/ocfs2/ocfs2_trace.h
@@ -0,0 +1,2739 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM ocfs2
+
+#if !defined(_TRACE_OCFS2_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_OCFS2_H
+
+#include <linux/tracepoint.h>
+
+DECLARE_EVENT_CLASS(ocfs2__int,
+	TP_PROTO(int num),
+	TP_ARGS(num),
+	TP_STRUCT__entry(
+		__field(int, num)
+	),
+	TP_fast_assign(
+		__entry->num = num;
+	),
+	TP_printk("%d", __entry->num)
+);
+
+#define DEFINE_OCFS2_INT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__int, name,	\
+	TP_PROTO(int num),	\
+	TP_ARGS(num))
+
+DECLARE_EVENT_CLASS(ocfs2__uint,
+	TP_PROTO(unsigned int num),
+	TP_ARGS(num),
+	TP_STRUCT__entry(
+		__field(	unsigned int,	num		)
+	),
+	TP_fast_assign(
+		__entry->num	= 	num;
+	),
+	TP_printk("%u", __entry->num)
+);
+
+#define DEFINE_OCFS2_UINT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__uint, name,	\
+	TP_PROTO(unsigned int num),	\
+	TP_ARGS(num))
+
+DECLARE_EVENT_CLASS(ocfs2__ull,
+	TP_PROTO(unsigned long long blkno),
+	TP_ARGS(blkno),
+	TP_STRUCT__entry(
+		__field(unsigned long long, blkno)
+	),
+	TP_fast_assign(
+		__entry->blkno = blkno;
+	),
+	TP_printk("%llu", __entry->blkno)
+);
+
+#define DEFINE_OCFS2_ULL_EVENT(name)	\
+DEFINE_EVENT(ocfs2__ull, name,	\
+	TP_PROTO(unsigned long long num),	\
+	TP_ARGS(num))
+
+DECLARE_EVENT_CLASS(ocfs2__pointer,
+	TP_PROTO(void *pointer),
+	TP_ARGS(pointer),
+	TP_STRUCT__entry(
+		__field(void *, pointer)
+	),
+	TP_fast_assign(
+		__entry->pointer = pointer;
+	),
+	TP_printk("%p", __entry->pointer)
+);
+
+#define DEFINE_OCFS2_POINTER_EVENT(name)	\
+DEFINE_EVENT(ocfs2__pointer, name,	\
+	TP_PROTO(void *pointer),	\
+	TP_ARGS(pointer))
+
+DECLARE_EVENT_CLASS(ocfs2__string,
+	TP_PROTO(const char *name),
+	TP_ARGS(name),
+	TP_STRUCT__entry(
+		__string(name,name)
+	),
+	TP_fast_assign(
+		__assign_str(name, name);
+	),
+	TP_printk("%s", __get_str(name))
+);
+
+#define DEFINE_OCFS2_STRING_EVENT(name)	\
+DEFINE_EVENT(ocfs2__string, name,	\
+	TP_PROTO(const char *name),	\
+	TP_ARGS(name))
+
+DECLARE_EVENT_CLASS(ocfs2__int_int,
+	TP_PROTO(int value1, int value2),
+	TP_ARGS(value1, value2),
+	TP_STRUCT__entry(
+		__field(int, value1)
+		__field(int, value2)
+	),
+	TP_fast_assign(
+		__entry->value1	= value1;
+		__entry->value2	= value2;
+	),
+	TP_printk("%d %d", __entry->value1, __entry->value2)
+);
+
+#define DEFINE_OCFS2_INT_INT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__int_int, name,	\
+	TP_PROTO(int val1, int val2),	\
+	TP_ARGS(val1, val2))
+
+DECLARE_EVENT_CLASS(ocfs2__uint_int,
+	TP_PROTO(unsigned int value1, int value2),
+	TP_ARGS(value1, value2),
+	TP_STRUCT__entry(
+		__field(unsigned int, value1)
+		__field(int, value2)
+	),
+	TP_fast_assign(
+		__entry->value1	= value1;
+		__entry->value2	= value2;
+	),
+	TP_printk("%u %d", __entry->value1, __entry->value2)
+);
+
+#define DEFINE_OCFS2_UINT_INT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__uint_int, name,	\
+	TP_PROTO(unsigned int val1, int val2),	\
+	TP_ARGS(val1, val2))
+
+DECLARE_EVENT_CLASS(ocfs2__uint_uint,
+	TP_PROTO(unsigned int value1, unsigned int value2),
+	TP_ARGS(value1, value2),
+	TP_STRUCT__entry(
+		__field(unsigned int, value1)
+		__field(unsigned int, value2)
+	),
+	TP_fast_assign(
+		__entry->value1 = value1;
+		__entry->value2 = value2;
+	),
+	TP_printk("%u %u", __entry->value1, __entry->value2)
+);
+
+#define DEFINE_OCFS2_UINT_UINT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__uint_uint, name,	\
+	TP_PROTO(unsigned int val1, unsigned int val2),	\
+	TP_ARGS(val1, val2))
+
+DECLARE_EVENT_CLASS(ocfs2__ull_uint,
+	TP_PROTO(unsigned long long value1, unsigned int value2),
+	TP_ARGS(value1, value2),
+	TP_STRUCT__entry(
+		__field(unsigned long long, value1)
+		__field(unsigned int, value2)
+	),
+	TP_fast_assign(
+		__entry->value1 = value1;
+		__entry->value2 = value2;
+	),
+	TP_printk("%llu %u", __entry->value1, __entry->value2)
+);
+
+#define DEFINE_OCFS2_ULL_UINT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__ull_uint, name,	\
+	TP_PROTO(unsigned long long val1, unsigned int val2),	\
+	TP_ARGS(val1, val2))
+
+DECLARE_EVENT_CLASS(ocfs2__ull_int,
+	TP_PROTO(unsigned long long value1, int value2),
+	TP_ARGS(value1, value2),
+	TP_STRUCT__entry(
+		__field(unsigned long long, value1)
+		__field(int, value2)
+	),
+	TP_fast_assign(
+		__entry->value1	= value1;
+		__entry->value2	= value2;
+	),
+	TP_printk("%llu %d", __entry->value1, __entry->value2)
+);
+
+#define DEFINE_OCFS2_ULL_INT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__ull_int, name,	\
+	TP_PROTO(unsigned long long val1, int val2),	\
+	TP_ARGS(val1, val2))
+
+DECLARE_EVENT_CLASS(ocfs2__ull_ull,
+	TP_PROTO(unsigned long long value1, unsigned long long value2),
+	TP_ARGS(value1, value2),
+	TP_STRUCT__entry(
+		__field(unsigned long long, value1)
+		__field(unsigned long long, value2)
+	),
+	TP_fast_assign(
+		__entry->value1 = value1;
+		__entry->value2 = value2;
+	),
+	TP_printk("%llu %llu", __entry->value1, __entry->value2)
+);
+
+#define DEFINE_OCFS2_ULL_ULL_EVENT(name)	\
+DEFINE_EVENT(ocfs2__ull_ull, name,	\
+	TP_PROTO(unsigned long long val1, unsigned long long val2),	\
+	TP_ARGS(val1, val2))
+
+DECLARE_EVENT_CLASS(ocfs2__ull_ull_uint,
+	TP_PROTO(unsigned long long value1,
+		 unsigned long long value2, unsigned int value3),
+	TP_ARGS(value1, value2, value3),
+	TP_STRUCT__entry(
+		__field(unsigned long long, value1)
+		__field(unsigned long long, value2)
+		__field(unsigned int, value3)
+	),
+	TP_fast_assign(
+		__entry->value1 = value1;
+		__entry->value2 = value2;
+		__entry->value3 = value3;
+	),
+	TP_printk("%llu %llu %u",
+		  __entry->value1, __entry->value2, __entry->value3)
+);
+
+#define DEFINE_OCFS2_ULL_ULL_UINT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__ull_ull_uint, name,	\
+	TP_PROTO(unsigned long long val1,	\
+		 unsigned long long val2, unsigned int val3),	\
+	TP_ARGS(val1, val2, val3))
+
+DECLARE_EVENT_CLASS(ocfs2__ull_uint_uint,
+	TP_PROTO(unsigned long long value1,
+		 unsigned int value2, unsigned int value3),
+	TP_ARGS(value1, value2, value3),
+	TP_STRUCT__entry(
+		__field(unsigned long long, value1)
+		__field(unsigned int, value2)
+		__field(unsigned int, value3)
+	),
+	TP_fast_assign(
+		__entry->value1 = value1;
+		__entry->value2 = value2;
+		__entry->value3	= value3;
+	),
+	TP_printk("%llu %u %u", __entry->value1,
+		  __entry->value2, __entry->value3)
+);
+
+#define DEFINE_OCFS2_ULL_UINT_UINT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__ull_uint_uint, name,	\
+	TP_PROTO(unsigned long long val1,	\
+		 unsigned int val2, unsigned int val3),	\
+	TP_ARGS(val1, val2, val3))
+
+DECLARE_EVENT_CLASS(ocfs2__uint_uint_uint,
+	TP_PROTO(unsigned int value1, unsigned int value2,
+		 unsigned int value3),
+	TP_ARGS(value1, value2, value3),
+	TP_STRUCT__entry(
+		__field(	unsigned int,	value1		)
+		__field(	unsigned int,	value2		)
+		__field(	unsigned int,	value3		)
+	),
+	TP_fast_assign(
+		__entry->value1	= 	value1;
+		__entry->value2	= 	value2;
+		__entry->value3	= 	value3;
+	),
+	TP_printk("%u %u %u", __entry->value1, __entry->value2, __entry->value3)
+);
+
+#define DEFINE_OCFS2_UINT_UINT_UINT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__uint_uint_uint, name,	\
+	TP_PROTO(unsigned int value1, unsigned int value2,	\
+		 unsigned int value3),	\
+	TP_ARGS(value1, value2, value3))
+
+DECLARE_EVENT_CLASS(ocfs2__ull_ull_ull,
+	TP_PROTO(unsigned long long value1,
+		 unsigned long long value2, unsigned long long value3),
+	TP_ARGS(value1, value2, value3),
+	TP_STRUCT__entry(
+		__field(unsigned long long, value1)
+		__field(unsigned long long, value2)
+		__field(unsigned long long, value3)
+	),
+	TP_fast_assign(
+		__entry->value1 = value1;
+		__entry->value2 = value2;
+		__entry->value3 = value3;
+	),
+	TP_printk("%llu %llu %llu",
+		  __entry->value1, __entry->value2, __entry->value3)
+);
+
+#define DEFINE_OCFS2_ULL_ULL_ULL_EVENT(name)	\
+DEFINE_EVENT(ocfs2__ull_ull_ull, name,	\
+	TP_PROTO(unsigned long long value1, unsigned long long value2,	\
+		 unsigned long long value3),	\
+	TP_ARGS(value1, value2, value3))
+
+DECLARE_EVENT_CLASS(ocfs2__ull_int_int_int,
+	TP_PROTO(unsigned long long ull, int value1, int value2, int value3),
+	TP_ARGS(ull, value1, value2, value3),
+	TP_STRUCT__entry(
+		__field(	unsigned long long,	ull	)
+		__field(	int,	value1			)
+		__field(	int,	value2			)
+		__field(	int,	value3			)
+	),
+	TP_fast_assign(
+		__entry->ull		= ull;
+		__entry->value1		= value1;
+		__entry->value2		= value2;
+		__entry->value3		= value3;
+	),
+	TP_printk("%llu %d %d %d",
+		  __entry->ull, __entry->value1,
+		  __entry->value2, __entry->value3)
+);
+
+#define DEFINE_OCFS2_ULL_INT_INT_INT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__ull_int_int_int, name,	\
+	TP_PROTO(unsigned long long ull, int value1,	\
+		 int value2, int value3),	\
+	TP_ARGS(ull, value1, value2, value3))
+
+DECLARE_EVENT_CLASS(ocfs2__ull_uint_uint_uint,
+	TP_PROTO(unsigned long long ull, unsigned int value1,
+		 unsigned int value2, unsigned int value3),
+	TP_ARGS(ull, value1, value2, value3),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ull)
+		__field(unsigned int, value1)
+		__field(unsigned int, value2)
+		__field(unsigned int, value3)
+	),
+	TP_fast_assign(
+		__entry->ull = ull;
+		__entry->value1 = value1;
+		__entry->value2	= value2;
+		__entry->value3	= value3;
+	),
+	TP_printk("%llu %u %u %u",
+		  __entry->ull, __entry->value1,
+		  __entry->value2, __entry->value3)
+);
+
+#define DEFINE_OCFS2_ULL_UINT_UINT_UINT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__ull_uint_uint_uint, name,	\
+	TP_PROTO(unsigned long long ull, unsigned int value1,	\
+		 unsigned int value2, unsigned int value3),	\
+	TP_ARGS(ull, value1, value2, value3))
+
+DECLARE_EVENT_CLASS(ocfs2__ull_ull_uint_uint,
+	TP_PROTO(unsigned long long value1, unsigned long long value2,
+		 unsigned int value3, unsigned int value4),
+	TP_ARGS(value1, value2, value3, value4),
+	TP_STRUCT__entry(
+		__field(unsigned long long, value1)
+		__field(unsigned long long, value2)
+		__field(unsigned int, value3)
+		__field(unsigned int, value4)
+	),
+	TP_fast_assign(
+		__entry->value1 = value1;
+		__entry->value2 = value2;
+		__entry->value3 = value3;
+		__entry->value4 = value4;
+	),
+	TP_printk("%llu %llu %u %u",
+		  __entry->value1, __entry->value2,
+		  __entry->value3, __entry->value4)
+);
+
+#define DEFINE_OCFS2_ULL_ULL_UINT_UINT_EVENT(name)	\
+DEFINE_EVENT(ocfs2__ull_ull_uint_uint, name,	\
+	TP_PROTO(unsigned long long ull, unsigned long long ull1,	\
+		 unsigned int value2, unsigned int value3),	\
+	TP_ARGS(ull, ull1, value2, value3))
+
+/* Trace events for fs/ocfs2/alloc.c. */
+DECLARE_EVENT_CLASS(ocfs2__btree_ops,
+	TP_PROTO(unsigned long long owner,\
+		 unsigned int value1, unsigned int value2),
+	TP_ARGS(owner, value1, value2),
+	TP_STRUCT__entry(
+		__field(unsigned long long, owner)
+		__field(unsigned int, value1)
+		__field(unsigned int, value2)
+	),
+	TP_fast_assign(
+		__entry->owner = owner;
+		__entry->value1 = value1;
+		__entry->value2	= value2;
+	),
+	TP_printk("%llu %u %u",
+		  __entry->owner, __entry->value1, __entry->value2)
+);
+
+#define DEFINE_OCFS2_BTREE_EVENT(name)	\
+DEFINE_EVENT(ocfs2__btree_ops, name,	\
+	TP_PROTO(unsigned long long owner,	\
+		 unsigned int value1, unsigned int value2),	\
+	TP_ARGS(owner, value1, value2))
+
+DEFINE_OCFS2_BTREE_EVENT(ocfs2_adjust_rightmost_branch);
+
+DEFINE_OCFS2_BTREE_EVENT(ocfs2_rotate_tree_right);
+
+DEFINE_OCFS2_BTREE_EVENT(ocfs2_append_rec_to_path);
+
+DEFINE_OCFS2_BTREE_EVENT(ocfs2_insert_extent_start);
+
+DEFINE_OCFS2_BTREE_EVENT(ocfs2_add_clusters_in_btree);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_num_free_extents);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_complete_edge_insert);
+
+TRACE_EVENT(ocfs2_grow_tree,
+	TP_PROTO(unsigned long long owner, int depth),
+	TP_ARGS(owner, depth),
+	TP_STRUCT__entry(
+		__field(unsigned long long, owner)
+		__field(int, depth)
+	),
+	TP_fast_assign(
+		__entry->owner = owner;
+		__entry->depth = depth;
+	),
+	TP_printk("%llu %d", __entry->owner, __entry->depth)
+);
+
+TRACE_EVENT(ocfs2_rotate_subtree,
+	TP_PROTO(int subtree_root, unsigned long long blkno,
+		 int depth),
+	TP_ARGS(subtree_root, blkno, depth),
+	TP_STRUCT__entry(
+		__field(int, subtree_root)
+		__field(unsigned long long, blkno)
+		__field(int, depth)
+	),
+	TP_fast_assign(
+		__entry->subtree_root = subtree_root;
+		__entry->blkno = blkno;
+		__entry->depth = depth;
+	),
+	TP_printk("%d %llu %d", __entry->subtree_root,
+		  __entry->blkno, __entry->depth)
+);
+
+TRACE_EVENT(ocfs2_insert_extent,
+	TP_PROTO(unsigned int ins_appending, unsigned int ins_contig,
+		 int ins_contig_index, int free_records, int ins_tree_depth),
+	TP_ARGS(ins_appending, ins_contig, ins_contig_index, free_records,
+		ins_tree_depth),
+	TP_STRUCT__entry(
+		__field(unsigned int, ins_appending)
+		__field(unsigned int, ins_contig)
+		__field(int, ins_contig_index)
+		__field(int, free_records)
+		__field(int, ins_tree_depth)
+	),
+	TP_fast_assign(
+		__entry->ins_appending = ins_appending;
+		__entry->ins_contig = ins_contig;
+		__entry->ins_contig_index = ins_contig_index;
+		__entry->free_records = free_records;
+		__entry->ins_tree_depth = ins_tree_depth;
+	),
+	TP_printk("%u %u %d %d %d",
+		  __entry->ins_appending, __entry->ins_contig,
+		  __entry->ins_contig_index, __entry->free_records,
+		  __entry->ins_tree_depth)
+);
+
+TRACE_EVENT(ocfs2_split_extent,
+	TP_PROTO(int split_index, unsigned int c_contig_type,
+		 unsigned int c_has_empty_extent,
+		 unsigned int c_split_covers_rec),
+	TP_ARGS(split_index, c_contig_type,
+		c_has_empty_extent, c_split_covers_rec),
+	TP_STRUCT__entry(
+		__field(int, split_index)
+		__field(unsigned int, c_contig_type)
+		__field(unsigned int, c_has_empty_extent)
+		__field(unsigned int, c_split_covers_rec)
+	),
+	TP_fast_assign(
+		__entry->split_index = split_index;
+		__entry->c_contig_type = c_contig_type;
+		__entry->c_has_empty_extent = c_has_empty_extent;
+		__entry->c_split_covers_rec = c_split_covers_rec;
+	),
+	TP_printk("%d %u %u %u", __entry->split_index, __entry->c_contig_type,
+		  __entry->c_has_empty_extent, __entry->c_split_covers_rec)
+);
+
+TRACE_EVENT(ocfs2_remove_extent,
+	TP_PROTO(unsigned long long owner, unsigned int cpos,
+		 unsigned int len, int index,
+		 unsigned int e_cpos, unsigned int clusters),
+	TP_ARGS(owner, cpos, len, index, e_cpos, clusters),
+	TP_STRUCT__entry(
+		__field(unsigned long long, owner)
+		__field(unsigned int, cpos)
+		__field(unsigned int, len)
+		__field(int, index)
+		__field(unsigned int, e_cpos)
+		__field(unsigned int, clusters)
+	),
+	TP_fast_assign(
+		__entry->owner = owner;
+		__entry->cpos = cpos;
+		__entry->len = len;
+		__entry->index = index;
+		__entry->e_cpos = e_cpos;
+		__entry->clusters = clusters;
+	),
+	TP_printk("%llu %u %u %d %u %u",
+		  __entry->owner, __entry->cpos, __entry->len, __entry->index,
+		  __entry->e_cpos, __entry->clusters)
+);
+
+TRACE_EVENT(ocfs2_commit_truncate,
+	TP_PROTO(unsigned long long ino, unsigned int new_cpos,
+		 unsigned int clusters, unsigned int depth),
+	TP_ARGS(ino, new_cpos, clusters, depth),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(unsigned int, new_cpos)
+		__field(unsigned int, clusters)
+		__field(unsigned int, depth)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->new_cpos = new_cpos;
+		__entry->clusters = clusters;
+		__entry->depth = depth;
+	),
+	TP_printk("%llu %u %u %u",
+		  __entry->ino, __entry->new_cpos,
+		  __entry->clusters, __entry->depth)
+);
+
+TRACE_EVENT(ocfs2_validate_extent_block,
+	TP_PROTO(unsigned long long blkno),
+	TP_ARGS(blkno),
+	TP_STRUCT__entry(
+		__field(unsigned long long, blkno)
+	),
+	TP_fast_assign(
+		__entry->blkno = blkno;
+	),
+	TP_printk("%llu ", __entry->blkno)
+);
+
+TRACE_EVENT(ocfs2_rotate_leaf,
+	TP_PROTO(unsigned int insert_cpos, int insert_index,
+		 int has_empty, int next_free,
+		 unsigned int l_count),
+	TP_ARGS(insert_cpos, insert_index, has_empty,
+		next_free, l_count),
+	TP_STRUCT__entry(
+		__field(unsigned int, insert_cpos)
+		__field(int, insert_index)
+		__field(int, has_empty)
+		__field(int, next_free)
+		__field(unsigned int, l_count)
+	),
+	TP_fast_assign(
+		__entry->insert_cpos = insert_cpos;
+		__entry->insert_index = insert_index;
+		__entry->has_empty = has_empty;
+		__entry->next_free = next_free;
+		__entry->l_count = l_count;
+	),
+	TP_printk("%u %d %d %d %u", __entry->insert_cpos,
+		  __entry->insert_index, __entry->has_empty,
+		  __entry->next_free, __entry->l_count)
+);
+
+TRACE_EVENT(ocfs2_add_clusters_in_btree_ret,
+	TP_PROTO(int status, int reason, int err),
+	TP_ARGS(status, reason, err),
+	TP_STRUCT__entry(
+		__field(int, status)
+		__field(int, reason)
+		__field(int, err)
+	),
+	TP_fast_assign(
+		__entry->status = status;
+		__entry->reason = reason;
+		__entry->err = err;
+	),
+	TP_printk("%d %d %d", __entry->status,
+		  __entry->reason, __entry->err)
+);
+
+TRACE_EVENT(ocfs2_mark_extent_written,
+	TP_PROTO(unsigned long long owner, unsigned int cpos,
+		 unsigned int len, unsigned int phys),
+	TP_ARGS(owner, cpos, len, phys),
+	TP_STRUCT__entry(
+		__field(unsigned long long, owner)
+		__field(unsigned int, cpos)
+		__field(unsigned int, len)
+		__field(unsigned int, phys)
+	),
+	TP_fast_assign(
+		__entry->owner = owner;
+		__entry->cpos = cpos;
+		__entry->len = len;
+		__entry->phys = phys;
+	),
+	TP_printk("%llu %u %u %u",
+		  __entry->owner, __entry->cpos,
+		  __entry->len, __entry->phys)
+);
+
+DECLARE_EVENT_CLASS(ocfs2__truncate_log_ops,
+	TP_PROTO(unsigned long long blkno, int index,
+		 unsigned int start, unsigned int num),
+	TP_ARGS(blkno, index, start, num),
+	TP_STRUCT__entry(
+		__field(unsigned long long, blkno)
+		__field(int, index)
+		__field(unsigned int, start)
+		__field(unsigned int, num)
+	),
+	TP_fast_assign(
+		__entry->blkno = blkno;
+		__entry->index = index;
+		__entry->start = start;
+		__entry->num = num;
+	),
+	TP_printk("%llu %d %u %u",
+		  __entry->blkno, __entry->index,
+		  __entry->start, __entry->num)
+);
+
+#define DEFINE_OCFS2_TRUNCATE_LOG_OPS_EVENT(name)	\
+DEFINE_EVENT(ocfs2__truncate_log_ops, name,	\
+	TP_PROTO(unsigned long long blkno, int index,	\
+		 unsigned int start, unsigned int num),	\
+	TP_ARGS(blkno, index, start, num))
+
+DEFINE_OCFS2_TRUNCATE_LOG_OPS_EVENT(ocfs2_truncate_log_append);
+
+DEFINE_OCFS2_TRUNCATE_LOG_OPS_EVENT(ocfs2_replay_truncate_records);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_flush_truncate_log);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_begin_truncate_log_recovery);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_truncate_log_recovery_num);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_complete_truncate_log_recovery);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_free_cached_blocks);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_cache_cluster_dealloc);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_run_deallocs);
+
+TRACE_EVENT(ocfs2_cache_block_dealloc,
+	TP_PROTO(int type, int slot, unsigned long long suballoc,
+		 unsigned long long blkno, unsigned int bit),
+	TP_ARGS(type, slot, suballoc, blkno, bit),
+	TP_STRUCT__entry(
+		__field(int, type)
+		__field(int, slot)
+		__field(unsigned long long, suballoc)
+		__field(unsigned long long, blkno)
+		__field(unsigned int, bit)
+	),
+	TP_fast_assign(
+		__entry->type = type;
+		__entry->slot = slot;
+		__entry->suballoc = suballoc;
+		__entry->blkno = blkno;
+		__entry->bit = bit;
+	),
+	TP_printk("%d %d %llu %llu %u",
+		  __entry->type, __entry->slot, __entry->suballoc,
+		  __entry->blkno, __entry->bit)
+);
+
+/* End of trace events for fs/ocfs2/alloc.c. */
+
+/* Trace events for fs/ocfs2/localalloc.c. */
+
+DEFINE_OCFS2_UINT_UINT_UINT_EVENT(ocfs2_la_set_sizes);
+
+DEFINE_OCFS2_ULL_INT_INT_INT_EVENT(ocfs2_alloc_should_use_local);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_load_local_alloc);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_begin_local_alloc_recovery);
+
+DEFINE_OCFS2_ULL_INT_INT_INT_EVENT(ocfs2_reserve_local_alloc_bits);
+
+DEFINE_OCFS2_UINT_EVENT(ocfs2_local_alloc_count_bits);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_local_alloc_find_clear_bits_search_bitmap);
+
+DEFINE_OCFS2_ULL_INT_INT_INT_EVENT(ocfs2_local_alloc_find_clear_bits);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_sync_local_to_main);
+
+TRACE_EVENT(ocfs2_sync_local_to_main_free,
+	TP_PROTO(int count, int bit, unsigned long long start_blk,
+		 unsigned long long blkno),
+	TP_ARGS(count, bit, start_blk, blkno),
+	TP_STRUCT__entry(
+		__field(int, count)
+		__field(int, bit)
+		__field(unsigned long long, start_blk)
+		__field(unsigned long long, blkno)
+	),
+	TP_fast_assign(
+		__entry->count = count;
+		__entry->bit = bit;
+		__entry->start_blk = start_blk;
+		__entry->blkno = blkno;
+	),
+	TP_printk("%d %d %llu %llu",
+		  __entry->count, __entry->bit, __entry->start_blk,
+		  __entry->blkno)
+);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_local_alloc_new_window);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_local_alloc_new_window_result);
+
+/* End of trace events for fs/ocfs2/localalloc.c. */
+
+/* Trace events for fs/ocfs2/resize.c. */
+
+DEFINE_OCFS2_UINT_UINT_EVENT(ocfs2_update_last_group_and_inode);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_group_extend);
+
+DEFINE_OCFS2_ULL_UINT_UINT_UINT_EVENT(ocfs2_group_add);
+
+/* End of trace events for fs/ocfs2/resize.c. */
+
+/* Trace events for fs/ocfs2/suballoc.c. */
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_validate_group_descriptor);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_block_group_alloc_contig);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_block_group_alloc_discontig);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_block_group_alloc);
+
+DEFINE_OCFS2_UINT_UINT_EVENT(ocfs2_reserve_suballoc_bits_nospc);
+
+DEFINE_OCFS2_UINT_UINT_UINT_EVENT(ocfs2_reserve_suballoc_bits_no_new_group);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_reserve_new_inode_new_group);
+
+DEFINE_OCFS2_UINT_UINT_EVENT(ocfs2_block_group_set_bits);
+
+TRACE_EVENT(ocfs2_relink_block_group,
+	TP_PROTO(unsigned long long i_blkno, unsigned int chain,
+		 unsigned long long bg_blkno,
+		 unsigned long long prev_blkno),
+	TP_ARGS(i_blkno, chain, bg_blkno, prev_blkno),
+	TP_STRUCT__entry(
+		__field(unsigned long long, i_blkno)
+		__field(unsigned int, chain)
+		__field(unsigned long long, bg_blkno)
+		__field(unsigned long long, prev_blkno)
+	),
+	TP_fast_assign(
+		__entry->i_blkno = i_blkno;
+		__entry->chain = chain;
+		__entry->bg_blkno = bg_blkno;
+		__entry->prev_blkno = prev_blkno;
+	),
+	TP_printk("%llu %u %llu %llu",
+		  __entry->i_blkno, __entry->chain, __entry->bg_blkno,
+		  __entry->prev_blkno)
+);
+
+DEFINE_OCFS2_ULL_UINT_UINT_UINT_EVENT(ocfs2_cluster_group_search_wrong_max_bits);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_cluster_group_search_max_block);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_block_group_search_max_block);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_search_chain_begin);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_search_chain_succ);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_search_chain_end);
+
+DEFINE_OCFS2_UINT_EVENT(ocfs2_claim_suballoc_bits);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_claim_new_inode_at_loc);
+
+DEFINE_OCFS2_UINT_UINT_EVENT(ocfs2_block_group_clear_bits);
+
+TRACE_EVENT(ocfs2_free_suballoc_bits,
+	TP_PROTO(unsigned long long inode, unsigned long long group,
+		 unsigned int start_bit, unsigned int count),
+	TP_ARGS(inode, group, start_bit, count),
+	TP_STRUCT__entry(
+		__field(unsigned long long, inode)
+		__field(unsigned long long, group)
+		__field(unsigned int, start_bit)
+		__field(unsigned int, count)
+	),
+	TP_fast_assign(
+		__entry->inode = inode;
+		__entry->group = group;
+		__entry->start_bit = start_bit;
+		__entry->count = count;
+	),
+	TP_printk("%llu %llu %u %u", __entry->inode, __entry->group,
+		  __entry->start_bit, __entry->count)
+);
+
+TRACE_EVENT(ocfs2_free_clusters,
+	TP_PROTO(unsigned long long bg_blkno, unsigned long long start_blk,
+		 unsigned int start_bit, unsigned int count),
+	TP_ARGS(bg_blkno, start_blk, start_bit, count),
+	TP_STRUCT__entry(
+		__field(unsigned long long, bg_blkno)
+		__field(unsigned long long, start_blk)
+		__field(unsigned int, start_bit)
+		__field(unsigned int, count)
+	),
+	TP_fast_assign(
+		__entry->bg_blkno = bg_blkno;
+		__entry->start_blk = start_blk;
+		__entry->start_bit = start_bit;
+		__entry->count = count;
+	),
+	TP_printk("%llu %llu %u %u", __entry->bg_blkno, __entry->start_blk,
+		  __entry->start_bit, __entry->count)
+);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_get_suballoc_slot_bit);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_test_suballoc_bit);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_test_inode_bit);
+
+/* End of trace events for fs/ocfs2/suballoc.c. */
+
+/* Trace events for fs/ocfs2/refcounttree.c. */
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_validate_refcount_block);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_purge_refcount_trees);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_create_refcount_tree);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_create_refcount_tree_blkno);
+
+DEFINE_OCFS2_ULL_INT_INT_INT_EVENT(ocfs2_change_refcount_rec);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_expand_inline_ref_root);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_divide_leaf_refcount_block);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_new_leaf_refcount_block);
+
+DECLARE_EVENT_CLASS(ocfs2__refcount_tree_ops,
+	TP_PROTO(unsigned long long blkno, int index,
+		 unsigned long long cpos,
+		 unsigned int clusters, unsigned int refcount),
+	TP_ARGS(blkno, index, cpos, clusters, refcount),
+	TP_STRUCT__entry(
+		__field(unsigned long long, blkno)
+		__field(int, index)
+		__field(unsigned long long, cpos)
+		__field(unsigned int, clusters)
+		__field(unsigned int, refcount)
+	),
+	TP_fast_assign(
+		__entry->blkno = blkno;
+		__entry->index = index;
+		__entry->cpos = cpos;
+		__entry->clusters = clusters;
+		__entry->refcount = refcount;
+	),
+	TP_printk("%llu %d %llu %u %u", __entry->blkno, __entry->index,
+		  __entry->cpos, __entry->clusters, __entry->refcount)
+);
+
+#define DEFINE_OCFS2_REFCOUNT_TREE_OPS_EVENT(name)	\
+DEFINE_EVENT(ocfs2__refcount_tree_ops, name,		\
+	TP_PROTO(unsigned long long blkno, int index,	\
+		 unsigned long long cpos,		\
+		 unsigned int count, unsigned int refcount),	\
+	TP_ARGS(blkno, index, cpos, count, refcount))
+
+DEFINE_OCFS2_REFCOUNT_TREE_OPS_EVENT(ocfs2_insert_refcount_rec);
+
+TRACE_EVENT(ocfs2_split_refcount_rec,
+	TP_PROTO(unsigned long long cpos,
+		 unsigned int clusters, unsigned int refcount,
+		 unsigned long long split_cpos,
+		 unsigned int split_clusters, unsigned int split_refcount),
+	TP_ARGS(cpos, clusters, refcount,
+		split_cpos, split_clusters, split_refcount),
+	TP_STRUCT__entry(
+		__field(unsigned long long, cpos)
+		__field(unsigned int, clusters)
+		__field(unsigned int, refcount)
+		__field(unsigned long long, split_cpos)
+		__field(unsigned int, split_clusters)
+		__field(unsigned int, split_refcount)
+	),
+	TP_fast_assign(
+		__entry->cpos = cpos;
+		__entry->clusters = clusters;
+		__entry->refcount = refcount;
+		__entry->split_cpos = split_cpos;
+		__entry->split_clusters = split_clusters;
+		__entry->split_refcount	= split_refcount;
+	),
+	TP_printk("%llu %u %u %llu %u %u",
+		  __entry->cpos, __entry->clusters, __entry->refcount,
+		  __entry->split_cpos, __entry->split_clusters,
+		  __entry->split_refcount)
+);
+
+DEFINE_OCFS2_REFCOUNT_TREE_OPS_EVENT(ocfs2_split_refcount_rec_insert);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_increase_refcount_begin);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_increase_refcount_change);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_increase_refcount_insert);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_increase_refcount_split);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_remove_refcount_extent);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_restore_refcount_block);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_decrease_refcount_rec);
+
+TRACE_EVENT(ocfs2_decrease_refcount,
+	TP_PROTO(unsigned long long owner,
+		 unsigned long long cpos,
+		 unsigned int len, int delete),
+	TP_ARGS(owner, cpos, len, delete),
+	TP_STRUCT__entry(
+		__field(unsigned long long, owner)
+		__field(unsigned long long, cpos)
+		__field(unsigned int, len)
+		__field(int, delete)
+	),
+	TP_fast_assign(
+		__entry->owner = owner;
+		__entry->cpos = cpos;
+		__entry->len = len;
+		__entry->delete = delete;
+	),
+	TP_printk("%llu %llu %u %d",
+		  __entry->owner, __entry->cpos, __entry->len, __entry->delete)
+);
+
+DEFINE_OCFS2_ULL_UINT_UINT_UINT_EVENT(ocfs2_mark_extent_refcounted);
+
+DEFINE_OCFS2_ULL_UINT_UINT_UINT_EVENT(ocfs2_calc_refcount_meta_credits);
+
+TRACE_EVENT(ocfs2_calc_refcount_meta_credits_iterate,
+	TP_PROTO(int recs_add, unsigned long long cpos,
+		 unsigned int clusters, unsigned long long r_cpos,
+		 unsigned int r_clusters, unsigned int refcount, int index),
+	TP_ARGS(recs_add, cpos, clusters, r_cpos, r_clusters, refcount, index),
+	TP_STRUCT__entry(
+		__field(int, recs_add)
+		__field(unsigned long long, cpos)
+		__field(unsigned int, clusters)
+		__field(unsigned long long, r_cpos)
+		__field(unsigned int, r_clusters)
+		__field(unsigned int, refcount)
+		__field(int, index)
+	),
+	TP_fast_assign(
+		__entry->recs_add = recs_add;
+		__entry->cpos = cpos;
+		__entry->clusters = clusters;
+		__entry->r_cpos = r_cpos;
+		__entry->r_clusters = r_clusters;
+		__entry->refcount = refcount;
+		__entry->index = index;
+	),
+	TP_printk("%d %llu %u %llu %u %u %d",
+		  __entry->recs_add, __entry->cpos, __entry->clusters,
+		  __entry->r_cpos, __entry->r_clusters,
+		  __entry->refcount, __entry->index)
+);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_add_refcount_flag);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_prepare_refcount_change_for_del);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_lock_refcount_allocators);
+
+DEFINE_OCFS2_ULL_UINT_UINT_UINT_EVENT(ocfs2_duplicate_clusters_by_page);
+
+DEFINE_OCFS2_ULL_UINT_UINT_UINT_EVENT(ocfs2_duplicate_clusters_by_jbd);
+
+TRACE_EVENT(ocfs2_clear_ext_refcount,
+	TP_PROTO(unsigned long long ino, unsigned int cpos,
+		 unsigned int len, unsigned int p_cluster,
+		 unsigned int ext_flags),
+	TP_ARGS(ino, cpos, len, p_cluster, ext_flags),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(unsigned int, cpos)
+		__field(unsigned int, len)
+		__field(unsigned int, p_cluster)
+		__field(unsigned int, ext_flags)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->cpos = cpos;
+		__entry->len = len;
+		__entry->p_cluster = p_cluster;
+		__entry->ext_flags = ext_flags;
+	),
+	TP_printk("%llu %u %u %u %u",
+		  __entry->ino, __entry->cpos, __entry->len,
+		  __entry->p_cluster, __entry->ext_flags)
+);
+
+TRACE_EVENT(ocfs2_replace_clusters,
+	TP_PROTO(unsigned long long ino, unsigned int cpos,
+		 unsigned int old, unsigned int new, unsigned int len,
+		 unsigned int ext_flags),
+	TP_ARGS(ino, cpos, old, new, len, ext_flags),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(unsigned int, cpos)
+		__field(unsigned int, old)
+		__field(unsigned int, new)
+		__field(unsigned int, len)
+		__field(unsigned int, ext_flags)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->cpos = cpos;
+		__entry->old = old;
+		__entry->new = new;
+		__entry->len = len;
+		__entry->ext_flags = ext_flags;
+	),
+	TP_printk("%llu %u %u %u %u %u",
+		  __entry->ino, __entry->cpos, __entry->old, __entry->new,
+		  __entry->len, __entry->ext_flags)
+);
+
+DEFINE_OCFS2_ULL_UINT_UINT_UINT_EVENT(ocfs2_make_clusters_writable);
+
+TRACE_EVENT(ocfs2_refcount_cow_hunk,
+	TP_PROTO(unsigned long long ino, unsigned int cpos,
+		 unsigned int write_len, unsigned int max_cpos,
+		 unsigned int cow_start, unsigned int cow_len),
+	TP_ARGS(ino, cpos, write_len, max_cpos, cow_start, cow_len),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(unsigned int, cpos)
+		__field(unsigned int, write_len)
+		__field(unsigned int, max_cpos)
+		__field(unsigned int, cow_start)
+		__field(unsigned int, cow_len)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->cpos = cpos;
+		__entry->write_len = write_len;
+		__entry->max_cpos = max_cpos;
+		__entry->cow_start = cow_start;
+		__entry->cow_len = cow_len;
+	),
+	TP_printk("%llu %u %u %u %u %u",
+		  __entry->ino, __entry->cpos, __entry->write_len,
+		  __entry->max_cpos, __entry->cow_start, __entry->cow_len)
+);
+
+/* End of trace events for fs/ocfs2/refcounttree.c. */
+
+/* Trace events for fs/ocfs2/aops.c. */
+
+DECLARE_EVENT_CLASS(ocfs2__get_block,
+	TP_PROTO(unsigned long long ino, unsigned long long iblock,
+		 void *bh_result, int create),
+	TP_ARGS(ino, iblock, bh_result, create),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(unsigned long long, iblock)
+		__field(void *, bh_result)
+		__field(int, create)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->iblock = iblock;
+		__entry->bh_result = bh_result;
+		__entry->create = create;
+	),
+	TP_printk("%llu %llu %p %d",
+		  __entry->ino, __entry->iblock,
+		  __entry->bh_result, __entry->create)
+);
+
+#define DEFINE_OCFS2_GET_BLOCK_EVENT(name)	\
+DEFINE_EVENT(ocfs2__get_block, name,	\
+	TP_PROTO(unsigned long long ino, unsigned long long iblock,	\
+		 void *bh_result, int create),	\
+	TP_ARGS(ino, iblock, bh_result, create))
+
+DEFINE_OCFS2_GET_BLOCK_EVENT(ocfs2_symlink_get_block);
+
+DEFINE_OCFS2_GET_BLOCK_EVENT(ocfs2_get_block);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_get_block_end);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_readpage);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_writepage);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_bmap);
+
+TRACE_EVENT(ocfs2_try_to_write_inline_data,
+	TP_PROTO(unsigned long long ino, unsigned int len,
+		 unsigned long long pos, unsigned int flags),
+	TP_ARGS(ino, len, pos, flags),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(unsigned int, len)
+		__field(unsigned long long, pos)
+		__field(unsigned int, flags)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->len = len;
+		__entry->pos = pos;
+		__entry->flags = flags;
+	),
+	TP_printk("%llu %u %llu 0x%x",
+		  __entry->ino, __entry->len, __entry->pos, __entry->flags)
+);
+
+TRACE_EVENT(ocfs2_write_begin_nolock,
+	TP_PROTO(unsigned long long ino,
+		 long long i_size, unsigned int i_clusters,
+		 unsigned long long pos, unsigned int len,
+		 unsigned int flags, void *page,
+		 unsigned int clusters, unsigned int extents_to_split),
+	TP_ARGS(ino, i_size, i_clusters, pos, len, flags,
+		page, clusters, extents_to_split),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(long long, i_size)
+		__field(unsigned int, i_clusters)
+		__field(unsigned long long, pos)
+		__field(unsigned int, len)
+		__field(unsigned int, flags)
+		__field(void *, page)
+		__field(unsigned int, clusters)
+		__field(unsigned int, extents_to_split)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->i_size = i_size;
+		__entry->i_clusters = i_clusters;
+		__entry->pos = pos;
+		__entry->len = len;
+		__entry->flags = flags;
+		__entry->page = page;
+		__entry->clusters = clusters;
+		__entry->extents_to_split = extents_to_split;
+	),
+	TP_printk("%llu %lld %u %llu %u %u %p %u %u",
+		  __entry->ino, __entry->i_size, __entry->i_clusters,
+		  __entry->pos, __entry->len,
+		  __entry->flags, __entry->page, __entry->clusters,
+		  __entry->extents_to_split)
+);
+
+TRACE_EVENT(ocfs2_write_end_inline,
+	TP_PROTO(unsigned long long ino,
+		 unsigned long long pos, unsigned int copied,
+		 unsigned int id_count, unsigned int features),
+	TP_ARGS(ino, pos, copied, id_count, features),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(unsigned long long, pos)
+		__field(unsigned int, copied)
+		__field(unsigned int, id_count)
+		__field(unsigned int, features)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->pos = pos;
+		__entry->copied = copied;
+		__entry->id_count = id_count;
+		__entry->features = features;
+	),
+	TP_printk("%llu %llu %u %u %u",
+		  __entry->ino, __entry->pos, __entry->copied,
+		  __entry->id_count, __entry->features)
+);
+
+/* End of trace events for fs/ocfs2/aops.c. */
+
+/* Trace events for fs/ocfs2/mmap.c. */
+
+TRACE_EVENT(ocfs2_fault,
+	TP_PROTO(unsigned long long ino,
+		 void *area, void *page, unsigned long pgoff),
+	TP_ARGS(ino, area, page, pgoff),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(void *, area)
+		__field(void *, page)
+		__field(unsigned long, pgoff)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->area = area;
+		__entry->page = page;
+		__entry->pgoff = pgoff;
+	),
+	TP_printk("%llu %p %p %lu",
+		  __entry->ino, __entry->area, __entry->page, __entry->pgoff)
+);
+
+/* End of trace events for fs/ocfs2/mmap.c. */
+
+/* Trace events for fs/ocfs2/file.c. */
+
+DECLARE_EVENT_CLASS(ocfs2__file_ops,
+	TP_PROTO(void *inode, void *file, void *dentry,
+		 unsigned long long ino,
+		 unsigned int d_len, const unsigned char *d_name,
+		 unsigned long long para),
+	TP_ARGS(inode, file, dentry, ino, d_len, d_name, para),
+	TP_STRUCT__entry(
+		__field(void *, inode)
+		__field(void *, file)
+		__field(void *, dentry)
+		__field(unsigned long long, ino)
+		__field(unsigned int, d_len)
+		__string(d_name, d_name)
+		__field(unsigned long long, para)
+	),
+	TP_fast_assign(
+		__entry->inode = inode;
+		__entry->file = file;
+		__entry->dentry = dentry;
+		__entry->ino = ino;
+		__entry->d_len = d_len;
+		__assign_str(d_name, d_name);
+		__entry->para = para;
+	),
+	TP_printk("%p %p %p %llu %llu %.*s", __entry->inode, __entry->file,
+		  __entry->dentry, __entry->ino, __entry->para,
+		  __entry->d_len, __get_str(d_name))
+);
+
+#define DEFINE_OCFS2_FILE_OPS(name)				\
+DEFINE_EVENT(ocfs2__file_ops, name,				\
+TP_PROTO(void *inode, void *file, void *dentry,			\
+	 unsigned long long ino,				\
+	 unsigned int d_len, const unsigned char *d_name,	\
+	 unsigned long long mode),				\
+	TP_ARGS(inode, file, dentry, ino, d_len, d_name, mode))
+
+DEFINE_OCFS2_FILE_OPS(ocfs2_file_open);
+
+DEFINE_OCFS2_FILE_OPS(ocfs2_file_release);
+
+DEFINE_OCFS2_FILE_OPS(ocfs2_sync_file);
+
+DEFINE_OCFS2_FILE_OPS(ocfs2_file_aio_write);
+
+DEFINE_OCFS2_FILE_OPS(ocfs2_file_splice_write);
+
+DEFINE_OCFS2_FILE_OPS(ocfs2_file_splice_read);
+
+DEFINE_OCFS2_FILE_OPS(ocfs2_file_aio_read);
+
+DEFINE_OCFS2_ULL_ULL_ULL_EVENT(ocfs2_truncate_file);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_truncate_file_error);
+
+TRACE_EVENT(ocfs2_extend_allocation,
+	TP_PROTO(unsigned long long ip_blkno, unsigned long long size,
+		 unsigned int clusters, unsigned int clusters_to_add,
+		 int why, int restart_func),
+	TP_ARGS(ip_blkno, size, clusters, clusters_to_add, why, restart_func),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ip_blkno)
+		__field(unsigned long long, size)
+		__field(unsigned int, clusters)
+		__field(unsigned int, clusters_to_add)
+		__field(int, why)
+		__field(int, restart_func)
+	),
+	TP_fast_assign(
+		__entry->ip_blkno = ip_blkno;
+		__entry->size = size;
+		__entry->clusters = clusters;
+		__entry->clusters_to_add = clusters_to_add;
+		__entry->why = why;
+		__entry->restart_func = restart_func;
+	),
+	TP_printk("%llu %llu %u %u %d %d",
+		  __entry->ip_blkno, __entry->size, __entry->clusters,
+		  __entry->clusters_to_add, __entry->why, __entry->restart_func)
+);
+
+TRACE_EVENT(ocfs2_extend_allocation_end,
+	TP_PROTO(unsigned long long ino,
+		 unsigned int di_clusters, unsigned long long di_size,
+		 unsigned int ip_clusters, unsigned long long i_size),
+	TP_ARGS(ino, di_clusters, di_size, ip_clusters, i_size),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(unsigned int, di_clusters)
+		__field(unsigned long long, di_size)
+		__field(unsigned int, ip_clusters)
+		__field(unsigned long long, i_size)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->di_clusters = di_clusters;
+		__entry->di_size = di_size;
+		__entry->ip_clusters = ip_clusters;
+		__entry->i_size = i_size;
+	),
+	TP_printk("%llu %u %llu %u %llu", __entry->ino, __entry->di_clusters,
+		  __entry->di_size, __entry->ip_clusters, __entry->i_size)
+);
+
+TRACE_EVENT(ocfs2_write_zero_page,
+	TP_PROTO(unsigned long long ino,
+		 unsigned long long abs_from, unsigned long long abs_to,
+		 unsigned long index, unsigned int zero_from,
+		 unsigned int zero_to),
+	TP_ARGS(ino, abs_from, abs_to, index, zero_from, zero_to),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(unsigned long long, abs_from)
+		__field(unsigned long long, abs_to)
+		__field(unsigned long, index)
+		__field(unsigned int, zero_from)
+		__field(unsigned int, zero_to)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->abs_from = abs_from;
+		__entry->abs_to = abs_to;
+		__entry->index = index;
+		__entry->zero_from = zero_from;
+		__entry->zero_to = zero_to;
+	),
+	TP_printk("%llu %llu %llu %lu %u %u", __entry->ino,
+		  __entry->abs_from, __entry->abs_to,
+		  __entry->index, __entry->zero_from, __entry->zero_to)
+);
+
+DEFINE_OCFS2_ULL_ULL_ULL_EVENT(ocfs2_zero_extend_range);
+
+DEFINE_OCFS2_ULL_ULL_ULL_EVENT(ocfs2_zero_extend);
+
+TRACE_EVENT(ocfs2_setattr,
+	TP_PROTO(void *inode, void *dentry,
+		 unsigned long long ino,
+		 unsigned int d_len, const unsigned char *d_name,
+		 unsigned int ia_valid, unsigned int ia_mode,
+		 unsigned int ia_uid, unsigned int ia_gid),
+	TP_ARGS(inode, dentry, ino, d_len, d_name,
+		ia_valid, ia_mode, ia_uid, ia_gid),
+	TP_STRUCT__entry(
+		__field(void *, inode)
+		__field(void *, dentry)
+		__field(unsigned long long, ino)
+		__field(unsigned int, d_len)
+		__string(d_name, d_name)
+		__field(unsigned int, ia_valid)
+		__field(unsigned int, ia_mode)
+		__field(unsigned int, ia_uid)
+		__field(unsigned int, ia_gid)
+	),
+	TP_fast_assign(
+		__entry->inode = inode;
+		__entry->dentry = dentry;
+		__entry->ino = ino;
+		__entry->d_len = d_len;
+		__assign_str(d_name, d_name);
+		__entry->ia_valid = ia_valid;
+		__entry->ia_mode = ia_mode;
+		__entry->ia_uid = ia_uid;
+		__entry->ia_gid = ia_gid;
+	),
+	TP_printk("%p %p %llu %.*s %u %u %u %u", __entry->inode,
+		  __entry->dentry, __entry->ino, __entry->d_len,
+		  __get_str(d_name), __entry->ia_valid, __entry->ia_mode,
+		  __entry->ia_uid, __entry->ia_gid)
+);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_write_remove_suid);
+
+DEFINE_OCFS2_ULL_ULL_ULL_EVENT(ocfs2_zero_partial_clusters);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_zero_partial_clusters_range1);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_zero_partial_clusters_range2);
+
+DEFINE_OCFS2_ULL_ULL_ULL_EVENT(ocfs2_remove_inode_range);
+
+TRACE_EVENT(ocfs2_prepare_inode_for_write,
+	TP_PROTO(unsigned long long ino, unsigned long long saved_pos,
+		 int appending, unsigned long count,
+		 int *direct_io, int *has_refcount),
+	TP_ARGS(ino, saved_pos, appending, count, direct_io, has_refcount),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(unsigned long long, saved_pos)
+		__field(int, appending)
+		__field(unsigned long, count)
+		__field(int, direct_io)
+		__field(int, has_refcount)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->saved_pos = saved_pos;
+		__entry->appending = appending;
+		__entry->count = count;
+		__entry->direct_io = direct_io ? *direct_io : -1;
+		__entry->has_refcount = has_refcount ? *has_refcount : -1;
+	),
+	TP_printk("%llu %llu %d %lu %d %d", __entry->ino,
+		  __entry->saved_pos, __entry->appending, __entry->count,
+		  __entry->direct_io, __entry->has_refcount)
+);
+
+DEFINE_OCFS2_INT_EVENT(generic_file_aio_read_ret);
+
+/* End of trace events for fs/ocfs2/file.c. */
+
+/* Trace events for fs/ocfs2/inode.c. */
+
+TRACE_EVENT(ocfs2_iget_begin,
+	TP_PROTO(unsigned long long ino, unsigned int flags, int sysfile_type),
+	TP_ARGS(ino, flags, sysfile_type),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(unsigned int, flags)
+		__field(int, sysfile_type)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->flags = flags;
+		__entry->sysfile_type = sysfile_type;
+	),
+	TP_printk("%llu %u %d", __entry->ino,
+		  __entry->flags, __entry->sysfile_type)
+);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_iget5_locked);
+
+TRACE_EVENT(ocfs2_iget_end,
+	TP_PROTO(void *inode, unsigned long long ino),
+	TP_ARGS(inode, ino),
+	TP_STRUCT__entry(
+		__field(void *, inode)
+		__field(unsigned long long, ino)
+	),
+	TP_fast_assign(
+		__entry->inode = inode;
+		__entry->ino = ino;
+	),
+	TP_printk("%p %llu", __entry->inode, __entry->ino)
+);
+
+TRACE_EVENT(ocfs2_find_actor,
+	TP_PROTO(void *inode, unsigned long long ino,
+		 void *args,  unsigned long long fi_blkno),
+	TP_ARGS(inode, ino, args, fi_blkno),
+	TP_STRUCT__entry(
+		__field(void *, inode)
+		__field(unsigned long long, ino)
+		__field(void *, args)
+		__field(unsigned long long, fi_blkno)
+	),
+	TP_fast_assign(
+		__entry->inode = inode;
+		__entry->ino = ino;
+		__entry->args = args;
+		__entry->fi_blkno = fi_blkno;
+	),
+	TP_printk("%p %llu %p %llu", __entry->inode, __entry->ino,
+		  __entry->args, __entry->fi_blkno)
+);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_populate_inode);
+
+DEFINE_OCFS2_ULL_INT_EVENT(ocfs2_read_locked_inode);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_check_orphan_recovery_state);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_validate_inode_block);
+
+TRACE_EVENT(ocfs2_inode_is_valid_to_delete,
+	TP_PROTO(void *task, void *dc_task, unsigned long long ino,
+		 unsigned int flags),
+	TP_ARGS(task, dc_task, ino, flags),
+	TP_STRUCT__entry(
+		__field(void *, task)
+		__field(void *, dc_task)
+		__field(unsigned long long, ino)
+		__field(unsigned int, flags)
+	),
+	TP_fast_assign(
+		__entry->task = task;
+		__entry->dc_task = dc_task;
+		__entry->ino = ino;
+		__entry->flags = flags;
+	),
+	TP_printk("%p %p %llu %u", __entry->task, __entry->dc_task,
+		  __entry->ino, __entry->flags)
+);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_query_inode_wipe_begin);
+
+DEFINE_OCFS2_UINT_EVENT(ocfs2_query_inode_wipe_succ);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_query_inode_wipe_end);
+
+DEFINE_OCFS2_ULL_INT_EVENT(ocfs2_cleanup_delete_inode);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_delete_inode);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_clear_inode);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_drop_inode);
+
+TRACE_EVENT(ocfs2_inode_revalidate,
+	TP_PROTO(void *inode, unsigned long long ino,
+		 unsigned int flags),
+	TP_ARGS(inode, ino, flags),
+	TP_STRUCT__entry(
+		__field(void *, inode)
+		__field(unsigned long long, ino)
+		__field(unsigned int, flags)
+	),
+	TP_fast_assign(
+		__entry->inode = inode;
+		__entry->ino = ino;
+		__entry->flags = flags;
+	),
+	TP_printk("%p %llu %u", __entry->inode, __entry->ino, __entry->flags)
+);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_mark_inode_dirty);
+
+/* End of trace events for fs/ocfs2/inode.c. */
+
+/* Trace events for fs/ocfs2/extent_map.c. */
+
+TRACE_EVENT(ocfs2_read_virt_blocks,
+	TP_PROTO(void *inode, unsigned long long vblock, int nr,
+		 void *bhs, unsigned int flags, void *validate),
+	TP_ARGS(inode, vblock, nr, bhs, flags, validate),
+	TP_STRUCT__entry(
+		__field(void *, inode)
+		__field(unsigned long long, vblock)
+		__field(int, nr)
+		__field(void *, bhs)
+		__field(unsigned int, flags)
+		__field(void *, validate)
+	),
+	TP_fast_assign(
+		__entry->inode = inode;
+		__entry->vblock = vblock;
+		__entry->nr = nr;
+		__entry->bhs = bhs;
+		__entry->flags = flags;
+		__entry->validate = validate;
+	),
+	TP_printk("%p %llu %d %p %x %p", __entry->inode, __entry->vblock,
+		  __entry->nr, __entry->bhs, __entry->flags, __entry->validate)
+);
+
+/* End of trace events for fs/ocfs2/extent_map.c. */
+
+/* Trace events for fs/ocfs2/slot_map.c. */
+
+DEFINE_OCFS2_UINT_EVENT(ocfs2_refresh_slot_info);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_map_slot_buffers);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_map_slot_buffers_block);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_find_slot);
+
+/* End of trace events for fs/ocfs2/slot_map.c. */
+
+/* Trace events for fs/ocfs2/heartbeat.c. */
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_do_node_down);
+
+/* End of trace events for fs/ocfs2/heartbeat.c. */
+
+/* Trace events for fs/ocfs2/super.c. */
+
+TRACE_EVENT(ocfs2_remount,
+	TP_PROTO(unsigned long s_flags, unsigned long osb_flags, int flags),
+	TP_ARGS(s_flags, osb_flags, flags),
+	TP_STRUCT__entry(
+		__field(unsigned long, s_flags)
+		__field(unsigned long, osb_flags)
+		__field(int, flags)
+	),
+	TP_fast_assign(
+		__entry->s_flags = s_flags;
+		__entry->osb_flags = osb_flags;
+		__entry->flags = flags;
+	),
+	TP_printk("%lu %lu %d", __entry->s_flags,
+		  __entry->osb_flags, __entry->flags)
+);
+
+TRACE_EVENT(ocfs2_fill_super,
+	TP_PROTO(void *sb, void *data, int silent),
+	TP_ARGS(sb, data, silent),
+	TP_STRUCT__entry(
+		__field(void *, sb)
+		__field(void *, data)
+		__field(int, silent)
+	),
+	TP_fast_assign(
+		__entry->sb = sb;
+		__entry->data = data;
+		__entry->silent = silent;
+	),
+	TP_printk("%p %p %d", __entry->sb,
+		  __entry->data, __entry->silent)
+);
+
+TRACE_EVENT(ocfs2_parse_options,
+	TP_PROTO(int is_remount, char *options),
+	TP_ARGS(is_remount, options),
+	TP_STRUCT__entry(
+		__field(int, is_remount)
+		__string(options, options)
+	),
+	TP_fast_assign(
+		__entry->is_remount = is_remount;
+		__assign_str(options, options);
+	),
+	TP_printk("%d %s", __entry->is_remount, __get_str(options))
+);
+
+DEFINE_OCFS2_POINTER_EVENT(ocfs2_put_super);
+
+TRACE_EVENT(ocfs2_statfs,
+	TP_PROTO(void *sb, void *buf),
+	TP_ARGS(sb, buf),
+	TP_STRUCT__entry(
+		__field(void *, sb)
+		__field(void *, buf)
+	),
+	TP_fast_assign(
+		__entry->sb = sb;
+		__entry->buf = buf;
+	),
+	TP_printk("%p %p", __entry->sb, __entry->buf)
+);
+
+DEFINE_OCFS2_POINTER_EVENT(ocfs2_dismount_volume);
+
+TRACE_EVENT(ocfs2_initialize_super,
+	TP_PROTO(char *label, char *uuid_str, unsigned long long root_dir,
+		 unsigned long long system_dir, int cluster_bits),
+	TP_ARGS(label, uuid_str, root_dir, system_dir, cluster_bits),
+	TP_STRUCT__entry(
+		__string(label, label)
+		__string(uuid_str, uuid_str)
+		__field(unsigned long long, root_dir)
+		__field(unsigned long long, system_dir)
+		__field(int, cluster_bits)
+	),
+	TP_fast_assign(
+		__assign_str(label, label);
+		__assign_str(uuid_str, uuid_str);
+		__entry->root_dir = root_dir;
+		__entry->system_dir = system_dir;
+		__entry->cluster_bits = cluster_bits;
+	),
+	TP_printk("%s %s %llu %llu %d", __get_str(label), __get_str(uuid_str),
+		  __entry->root_dir, __entry->system_dir, __entry->cluster_bits)
+);
+
+/* End of trace events for fs/ocfs2/super.c. */
+
+/* Trace events for fs/ocfs2/xattr.c. */
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_validate_xattr_block);
+
+DEFINE_OCFS2_UINT_EVENT(ocfs2_xattr_extend_allocation);
+
+TRACE_EVENT(ocfs2_init_xattr_set_ctxt,
+	TP_PROTO(const char *name, int meta, int clusters, int credits),
+	TP_ARGS(name, meta, clusters, credits),
+	TP_STRUCT__entry(
+		__string(name, name)
+		__field(int, meta)
+		__field(int, clusters)
+		__field(int, credits)
+	),
+	TP_fast_assign(
+		__assign_str(name, name);
+		__entry->meta = meta;
+		__entry->clusters = clusters;
+		__entry->credits = credits;
+	),
+	TP_printk("%s %d %d %d", __get_str(name), __entry->meta,
+		  __entry->clusters, __entry->credits)
+);
+
+DECLARE_EVENT_CLASS(ocfs2__xattr_find,
+	TP_PROTO(unsigned long long ino, const char *name, int name_index,
+		 unsigned int hash, unsigned long long location,
+		 int xe_index),
+	TP_ARGS(ino, name, name_index, hash, location, xe_index),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__string(name, name)
+		__field(int, name_index)
+		__field(unsigned int, hash)
+		__field(unsigned long long, location)
+		__field(int, xe_index)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__assign_str(name, name);
+		__entry->name_index = name_index;
+		__entry->hash = hash;
+		__entry->location = location;
+		__entry->xe_index = xe_index;
+	),
+	TP_printk("%llu %s %d %u %llu %d", __entry->ino, __get_str(name),
+		  __entry->name_index, __entry->hash, __entry->location,
+		  __entry->xe_index)
+);
+
+#define DEFINE_OCFS2_XATTR_FIND_EVENT(name)					\
+DEFINE_EVENT(ocfs2__xattr_find, name,					\
+TP_PROTO(unsigned long long ino, const char *name, int name_index,	\
+	 unsigned int hash, unsigned long long bucket,			\
+	 int xe_index),							\
+	TP_ARGS(ino, name, name_index, hash, bucket, xe_index))
+
+DEFINE_OCFS2_XATTR_FIND_EVENT(ocfs2_xattr_bucket_find);
+
+DEFINE_OCFS2_XATTR_FIND_EVENT(ocfs2_xattr_index_block_find);
+
+DEFINE_OCFS2_XATTR_FIND_EVENT(ocfs2_xattr_index_block_find_rec);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_iterate_xattr_buckets);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_iterate_xattr_bucket);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_cp_xattr_block_to_bucket_begin);
+
+DEFINE_OCFS2_UINT_UINT_UINT_EVENT(ocfs2_cp_xattr_block_to_bucket_end);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_xattr_create_index_block_begin);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_xattr_create_index_block);
+
+DEFINE_OCFS2_ULL_UINT_UINT_UINT_EVENT(ocfs2_defrag_xattr_bucket);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_mv_xattr_bucket_cross_cluster);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_divide_xattr_bucket_begin);
+
+DEFINE_OCFS2_UINT_UINT_UINT_EVENT(ocfs2_divide_xattr_bucket_move);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_cp_xattr_bucket);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_mv_xattr_buckets);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_adjust_xattr_cross_cluster);
+
+DEFINE_OCFS2_ULL_ULL_UINT_UINT_EVENT(ocfs2_add_new_xattr_cluster_begin);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_add_new_xattr_cluster);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_add_new_xattr_cluster_insert);
+
+DEFINE_OCFS2_ULL_ULL_UINT_UINT_EVENT(ocfs2_extend_xattr_bucket);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_add_new_xattr_bucket);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_xattr_bucket_value_truncate);
+
+DEFINE_OCFS2_ULL_ULL_UINT_UINT_EVENT(ocfs2_rm_xattr_cluster);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_reflink_xattr_header);
+
+DEFINE_OCFS2_ULL_INT_EVENT(ocfs2_create_empty_xattr_block);
+
+DEFINE_OCFS2_STRING_EVENT(ocfs2_xattr_set_entry_bucket);
+
+DEFINE_OCFS2_STRING_EVENT(ocfs2_xattr_set_entry_index_block);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_xattr_bucket_value_refcount);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_reflink_xattr_buckets);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_reflink_xattr_rec);
+
+/* End of trace events for fs/ocfs2/xattr.c. */
+
+/* Trace events for fs/ocfs2/reservations.c. */
+
+DEFINE_OCFS2_UINT_UINT_EVENT(ocfs2_resv_insert);
+
+DEFINE_OCFS2_ULL_UINT_UINT_UINT_EVENT(ocfs2_resmap_find_free_bits_begin);
+
+DEFINE_OCFS2_UINT_UINT_EVENT(ocfs2_resmap_find_free_bits_end);
+
+TRACE_EVENT(ocfs2_resv_find_window_begin,
+	TP_PROTO(unsigned int r_start, unsigned int r_end, unsigned int goal,
+		 unsigned int wanted, int empty_root),
+	TP_ARGS(r_start, r_end, goal, wanted, empty_root),
+	TP_STRUCT__entry(
+		__field(unsigned int, r_start)
+		__field(unsigned int, r_end)
+		__field(unsigned int, goal)
+		__field(unsigned int, wanted)
+		__field(int, empty_root)
+	),
+	TP_fast_assign(
+		__entry->r_start = r_start;
+		__entry->r_end = r_end;
+		__entry->goal = goal;
+		__entry->wanted = wanted;
+		__entry->empty_root = empty_root;
+	),
+	TP_printk("%u %u %u %u %d", __entry->r_start, __entry->r_end,
+		  __entry->goal, __entry->wanted, __entry->empty_root)
+);
+
+DEFINE_OCFS2_UINT_UINT_EVENT(ocfs2_resv_find_window_prev);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_resv_find_window_next);
+
+DEFINE_OCFS2_UINT_UINT_UINT_EVENT(ocfs2_cannibalize_resv_begin);
+
+TRACE_EVENT(ocfs2_cannibalize_resv_end,
+	TP_PROTO(unsigned int start, unsigned int end, unsigned int len,
+		 unsigned int last_start, unsigned int last_len),
+	TP_ARGS(start, end, len, last_start, last_len),
+	TP_STRUCT__entry(
+		__field(unsigned int, start)
+		__field(unsigned int, end)
+		__field(unsigned int, len)
+		__field(unsigned int, last_start)
+		__field(unsigned int, last_len)
+	),
+	TP_fast_assign(
+		__entry->start = start;
+		__entry->end = end;
+		__entry->len = len;
+		__entry->last_start = last_start;
+		__entry->last_len = last_len;
+	),
+	TP_printk("%u %u %u %u %u", __entry->start, __entry->end,
+		  __entry->len, __entry->last_start, __entry->last_len)
+);
+
+DEFINE_OCFS2_UINT_UINT_EVENT(ocfs2_resmap_resv_bits);
+
+TRACE_EVENT(ocfs2_resmap_claimed_bits_begin,
+	TP_PROTO(unsigned int cstart, unsigned int cend, unsigned int clen,
+		 unsigned int r_start, unsigned int r_end, unsigned int r_len,
+		 unsigned int last_start, unsigned int last_len),
+	TP_ARGS(cstart, cend, clen, r_start, r_end,
+		r_len, last_start, last_len),
+	TP_STRUCT__entry(
+		__field(unsigned int, cstart)
+		__field(unsigned int, cend)
+		__field(unsigned int, clen)
+		__field(unsigned int, r_start)
+		__field(unsigned int, r_end)
+		__field(unsigned int, r_len)
+		__field(unsigned int, last_start)
+		__field(unsigned int, last_len)
+	),
+	TP_fast_assign(
+		__entry->cstart = cstart;
+		__entry->cend = cend;
+		__entry->clen = clen;
+		__entry->r_start = r_start;
+		__entry->r_end = r_end;
+		__entry->r_len = r_len;
+		__entry->last_start = last_start;
+		__entry->last_len = last_len;
+	),
+	TP_printk("%u %u %u %u %u %u %u %u",
+		  __entry->cstart, __entry->cend, __entry->clen,
+		  __entry->r_start, __entry->r_end, __entry->r_len,
+		  __entry->last_start, __entry->last_len)
+);
+
+TRACE_EVENT(ocfs2_resmap_claimed_bits_end,
+	TP_PROTO(unsigned int start, unsigned int end, unsigned int len,
+		 unsigned int last_start, unsigned int last_len),
+	TP_ARGS(start, end, len, last_start, last_len),
+	TP_STRUCT__entry(
+		__field(unsigned int, start)
+		__field(unsigned int, end)
+		__field(unsigned int, len)
+		__field(unsigned int, last_start)
+		__field(unsigned int, last_len)
+	),
+	TP_fast_assign(
+		__entry->start = start;
+		__entry->end = end;
+		__entry->len = len;
+		__entry->last_start = last_start;
+		__entry->last_len = last_len;
+	),
+	TP_printk("%u %u %u %u %u", __entry->start, __entry->end,
+		  __entry->len, __entry->last_start, __entry->last_len)
+);
+
+/* End of trace events for fs/ocfs2/reservations.c. */
+
+/* Trace events for fs/ocfs2/quota_local.c. */
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_recover_local_quota_file);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_finish_quota_recovery);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(olq_set_dquot);
+
+/* End of trace events for fs/ocfs2/quota_local.c. */
+
+/* Trace events for fs/ocfs2/quota_global.c. */
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_validate_quota_block);
+
+TRACE_EVENT(ocfs2_sync_dquot,
+	TP_PROTO(unsigned int dq_id, long long dqb_curspace,
+		 long long spacechange, long long curinodes,
+		 long long inodechange),
+	TP_ARGS(dq_id, dqb_curspace, spacechange, curinodes, inodechange),
+	TP_STRUCT__entry(
+		__field(unsigned int, dq_id)
+		__field(long long, dqb_curspace)
+		__field(long long, spacechange)
+		__field(long long, curinodes)
+		__field(long long, inodechange)
+	),
+	TP_fast_assign(
+		__entry->dq_id = dq_id;
+		__entry->dqb_curspace = dqb_curspace;
+		__entry->spacechange = spacechange;
+		__entry->curinodes = curinodes;
+		__entry->inodechange = inodechange;
+	),
+	TP_printk("%u %lld %lld %lld %lld", __entry->dq_id,
+		  __entry->dqb_curspace, __entry->spacechange,
+		  __entry->curinodes, __entry->inodechange)
+);
+
+TRACE_EVENT(ocfs2_sync_dquot_helper,
+	TP_PROTO(unsigned int dq_id, unsigned int dq_type, unsigned long type,
+		 const char *s_id),
+	TP_ARGS(dq_id, dq_type, type, s_id),
+
+	TP_STRUCT__entry(
+		__field(unsigned int, dq_id)
+		__field(unsigned int, dq_type)
+		__field(unsigned long, type)
+		__string(s_id, s_id)
+	),
+	TP_fast_assign(
+		__entry->dq_id = dq_id;
+		__entry->dq_type = dq_type;
+		__entry->type = type;
+		__assign_str(s_id, s_id);
+	),
+	TP_printk("%u %u %lu %s", __entry->dq_id, __entry->dq_type,
+		  __entry->type, __get_str(s_id))
+);
+
+DEFINE_OCFS2_UINT_INT_EVENT(ocfs2_write_dquot);
+
+DEFINE_OCFS2_UINT_INT_EVENT(ocfs2_release_dquot);
+
+DEFINE_OCFS2_UINT_INT_EVENT(ocfs2_acquire_dquot);
+
+DEFINE_OCFS2_UINT_INT_EVENT(ocfs2_mark_dquot_dirty);
+
+/* End of trace events for fs/ocfs2/quota_global.c. */
+
+/* Trace events for fs/ocfs2/dir.c. */
+DEFINE_OCFS2_INT_EVENT(ocfs2_search_dirblock);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_validate_dir_block);
+
+DEFINE_OCFS2_POINTER_EVENT(ocfs2_find_entry_el);
+
+TRACE_EVENT(ocfs2_dx_dir_search,
+	TP_PROTO(unsigned long long ino, int namelen, const char *name,
+		 unsigned int major_hash, unsigned int minor_hash,
+		 unsigned long long blkno),
+	TP_ARGS(ino, namelen, name, major_hash, minor_hash, blkno),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(int, namelen)
+		__string(name, name)
+		__field(unsigned int, major_hash)
+		__field(unsigned int,minor_hash)
+		__field(unsigned long long, blkno)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->namelen = namelen;
+		__assign_str(name, name);
+		__entry->major_hash = major_hash;
+		__entry->minor_hash = minor_hash;
+		__entry->blkno = blkno;
+	),
+	TP_printk("%llu %.*s %u %u %llu", __entry->ino,
+		   __entry->namelen, __get_str(name),
+		  __entry->major_hash, __entry->minor_hash, __entry->blkno)
+);
+
+DEFINE_OCFS2_UINT_UINT_EVENT(ocfs2_dx_dir_search_leaf_info);
+
+DEFINE_OCFS2_ULL_INT_EVENT(ocfs2_delete_entry_dx);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_readdir);
+
+TRACE_EVENT(ocfs2_find_files_on_disk,
+	TP_PROTO(int namelen, const char *name, void *blkno,
+		 unsigned long long dir),
+	TP_ARGS(namelen, name, blkno, dir),
+	TP_STRUCT__entry(
+		__field(int, namelen)
+		__string(name, name)
+		__field(void *, blkno)
+		__field(unsigned long long, dir)
+	),
+	TP_fast_assign(
+		__entry->namelen = namelen;
+		__assign_str(name, name);
+		__entry->blkno = blkno;
+		__entry->dir = dir;
+	),
+	TP_printk("%.*s %p %llu", __entry->namelen, __get_str(name),
+		  __entry->blkno, __entry->dir)
+);
+
+TRACE_EVENT(ocfs2_check_dir_for_entry,
+	TP_PROTO(unsigned long long dir, int namelen, const char *name),
+	TP_ARGS(dir, namelen, name),
+	TP_STRUCT__entry(
+		__field(unsigned long long, dir)
+		__field(int, namelen)
+		__string(name, name)
+	),
+	TP_fast_assign(
+		__entry->dir = dir;
+		__entry->namelen = namelen;
+		__assign_str(name, name);
+	),
+	TP_printk("%llu %.*s", __entry->dir,
+		  __entry->namelen, __get_str(name))
+);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_dx_dir_attach_index);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_dx_dir_format_cluster);
+
+TRACE_EVENT(ocfs2_dx_dir_index_root_block,
+	TP_PROTO(unsigned long long dir,
+		 unsigned int major_hash, unsigned int minor_hash,
+		 int namelen, const char *name, unsigned int num_used),
+	TP_ARGS(dir, major_hash, minor_hash, namelen, name, num_used),
+	TP_STRUCT__entry(
+		__field(unsigned long long, dir)
+		__field(unsigned int, major_hash)
+		__field(unsigned int, minor_hash)
+		__field(int, namelen)
+		__string(name, name)
+		__field(unsigned int, num_used)
+	),
+	TP_fast_assign(
+		__entry->dir = dir;
+		__entry->major_hash = major_hash;
+		__entry->minor_hash = minor_hash;
+		__entry->namelen = namelen;
+		__assign_str(name, name);
+		__entry->num_used = num_used;
+	),
+	TP_printk("%llu %x %x %.*s %u", __entry->dir,
+		  __entry->major_hash, __entry->minor_hash,
+		   __entry->namelen, __get_str(name), __entry->num_used)
+);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_extend_dir);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_dx_dir_rebalance);
+
+DEFINE_OCFS2_UINT_UINT_UINT_EVENT(ocfs2_dx_dir_rebalance_split);
+
+DEFINE_OCFS2_ULL_INT_EVENT(ocfs2_prepare_dir_for_insert);
+
+/* End of trace events for fs/ocfs2/dir.c. */
+
+/* Trace events for fs/ocfs2/namei.c. */
+
+DECLARE_EVENT_CLASS(ocfs2__dentry_ops,
+	TP_PROTO(void *dir, void *dentry, int name_len, const char *name,
+		 unsigned long long dir_blkno, unsigned long long extra),
+	TP_ARGS(dir, dentry, name_len, name, dir_blkno, extra),
+	TP_STRUCT__entry(
+		__field(void *, dir)
+		__field(void *, dentry)
+		__field(int, name_len)
+		__string(name, name)
+		__field(unsigned long long, dir_blkno)
+		__field(unsigned long long, extra)
+	),
+	TP_fast_assign(
+		__entry->dir = dir;
+		__entry->dentry = dentry;
+		__entry->name_len = name_len;
+		__assign_str(name, name);
+		__entry->dir_blkno = dir_blkno;
+		__entry->extra = extra;
+	),
+	TP_printk("%p %p %.*s %llu %llu", __entry->dir, __entry->dentry,
+		  __entry->name_len, __get_str(name),
+		  __entry->dir_blkno, __entry->extra)
+);
+
+#define DEFINE_OCFS2_DENTRY_OPS(name)					\
+DEFINE_EVENT(ocfs2__dentry_ops, name,					\
+TP_PROTO(void *dir, void *dentry, int name_len, const char *name,	\
+	 unsigned long long dir_blkno, unsigned long long extra),	\
+	TP_ARGS(dir, dentry, name_len, name, dir_blkno, extra))
+
+DEFINE_OCFS2_DENTRY_OPS(ocfs2_lookup);
+
+DEFINE_OCFS2_DENTRY_OPS(ocfs2_mkdir);
+
+DEFINE_OCFS2_DENTRY_OPS(ocfs2_create);
+
+DEFINE_OCFS2_DENTRY_OPS(ocfs2_unlink);
+
+DEFINE_OCFS2_DENTRY_OPS(ocfs2_symlink_create);
+
+DEFINE_OCFS2_DENTRY_OPS(ocfs2_mv_orphaned_inode_to_new);
+
+DEFINE_OCFS2_POINTER_EVENT(ocfs2_lookup_ret);
+
+TRACE_EVENT(ocfs2_mknod,
+	TP_PROTO(void *dir, void *dentry, int name_len, const char *name,
+		 unsigned long long dir_blkno, unsigned long dev, int mode),
+	TP_ARGS(dir, dentry, name_len, name, dir_blkno, dev, mode),
+	TP_STRUCT__entry(
+		__field(void *, dir)
+		__field(void *, dentry)
+		__field(int, name_len)
+		__string(name, name)
+		__field(unsigned long long, dir_blkno)
+		__field(unsigned long, dev)
+		__field(int, mode)
+	),
+	TP_fast_assign(
+		__entry->dir = dir;
+		__entry->dentry = dentry;
+		__entry->name_len = name_len;
+		__assign_str(name, name);
+		__entry->dir_blkno = dir_blkno;
+		__entry->dev = dev;
+		__entry->mode = mode;
+	),
+	TP_printk("%p %p %.*s %llu %lu %d", __entry->dir, __entry->dentry,
+		  __entry->name_len, __get_str(name),
+		  __entry->dir_blkno, __entry->dev, __entry->mode)
+);
+
+TRACE_EVENT(ocfs2_link,
+	TP_PROTO(unsigned long long ino, int old_len, const char *old_name,
+		 int name_len, const char *name),
+	TP_ARGS(ino, old_len, old_name, name_len, name),
+	TP_STRUCT__entry(
+		__field(unsigned long long, ino)
+		__field(int, old_len)
+		__string(old_name, old_name)
+		__field(int, name_len)
+		__string(name, name)
+	),
+	TP_fast_assign(
+		__entry->ino = ino;
+		__entry->old_len = old_len;
+		__assign_str(old_name, old_name);
+		__entry->name_len = name_len;
+		__assign_str(name, name);
+	),
+	TP_printk("%llu %.*s %.*s", __entry->ino,
+		  __entry->old_len, __get_str(old_name),
+		  __entry->name_len, __get_str(name))
+);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_unlink_noent);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_double_lock);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_double_lock_end);
+
+TRACE_EVENT(ocfs2_rename,
+	TP_PROTO(void *old_dir, void *old_dentry,
+		 void *new_dir, void *new_dentry,
+		 int old_len, const char *old_name,
+		 int new_len, const char *new_name),
+	TP_ARGS(old_dir, old_dentry, new_dir, new_dentry,
+		old_len, old_name, new_len, new_name),
+	TP_STRUCT__entry(
+		__field(void *, old_dir)
+		__field(void *, old_dentry)
+		__field(void *, new_dir)
+		__field(void *, new_dentry)
+		__field(int, old_len)
+		__string(old_name, old_name)
+		__field(int, new_len)
+		__string(new_name, new_name)
+	),
+	TP_fast_assign(
+		__entry->old_dir = old_dir;
+		__entry->old_dentry = old_dentry;
+		__entry->new_dir = new_dir;
+		__entry->new_dentry = new_dentry;
+		__entry->old_len = old_len;
+		__assign_str(old_name, old_name);
+		__entry->new_len = new_len;
+		__assign_str(new_name, new_name);
+	),
+	TP_printk("%p %p %p %p %.*s %.*s",
+		  __entry->old_dir, __entry->old_dentry,
+		  __entry->new_dir, __entry->new_dentry,
+		  __entry->old_len, __get_str(old_name),
+		  __entry->new_len, __get_str(new_name))
+);
+
+TRACE_EVENT(ocfs2_rename_target_exists,
+	TP_PROTO(int new_len, const char *new_name),
+	TP_ARGS(new_len, new_name),
+	TP_STRUCT__entry(
+		__field(int, new_len)
+		__string(new_name, new_name)
+	),
+	TP_fast_assign(
+		__entry->new_len = new_len;
+		__assign_str(new_name, new_name);
+	),
+	TP_printk("%.*s", __entry->new_len, __get_str(new_name))
+);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_rename_disagree);
+
+TRACE_EVENT(ocfs2_rename_over_existing,
+	TP_PROTO(unsigned long long new_blkno, void *new_bh,
+		 unsigned long long newdi_blkno),
+	TP_ARGS(new_blkno, new_bh, newdi_blkno),
+	TP_STRUCT__entry(
+		__field(unsigned long long, new_blkno)
+		__field(void *, new_bh)
+		__field(unsigned long long, newdi_blkno)
+	),
+	TP_fast_assign(
+		__entry->new_blkno = new_blkno;
+		__entry->new_bh = new_bh;
+		__entry->newdi_blkno = newdi_blkno;
+	),
+	TP_printk("%llu %p %llu", __entry->new_blkno, __entry->new_bh,
+		  __entry->newdi_blkno)
+);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_create_symlink_data);
+
+TRACE_EVENT(ocfs2_symlink_begin,
+	TP_PROTO(void *dir, void *dentry, const char *symname,
+		 int len, const char *name),
+	TP_ARGS(dir, dentry, symname, len, name),
+	TP_STRUCT__entry(
+		__field(void *, dir)
+		__field(void *, dentry)
+		__field(const char *, symname)
+		__field(int, len)
+		__string(name, name)
+	),
+	TP_fast_assign(
+		__entry->dir = dir;
+		__entry->dentry = dentry;
+		__entry->symname = symname;
+		__entry->len = len;
+		__assign_str(name, name);
+	),
+	TP_printk("%p %p %s %.*s", __entry->dir, __entry->dentry,
+		  __entry->symname, __entry->len, __get_str(name))
+);
+
+TRACE_EVENT(ocfs2_blkno_stringify,
+	TP_PROTO(unsigned long long blkno, const char *name, int namelen),
+	TP_ARGS(blkno, name, namelen),
+	TP_STRUCT__entry(
+		__field(unsigned long long, blkno)
+		__string(name, name)
+		__field(int, namelen)
+	),
+	TP_fast_assign(
+		__entry->blkno = blkno;
+		__assign_str(name, name);
+		__entry->namelen = namelen;
+	),
+	TP_printk("%llu %s %d", __entry->blkno, __get_str(name),
+		  __entry->namelen)
+);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_orphan_add_begin);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_orphan_add_end);
+
+TRACE_EVENT(ocfs2_orphan_del,
+	TP_PROTO(unsigned long long dir, const char *name, int namelen),
+	TP_ARGS(dir, name, namelen),
+	TP_STRUCT__entry(
+		__field(unsigned long long, dir)
+		__string(name, name)
+		__field(int, namelen)
+	),
+	TP_fast_assign(
+		__entry->dir = dir;
+		__assign_str(name, name);
+		__entry->namelen = namelen;
+	),
+	TP_printk("%llu %s %d", __entry->dir, __get_str(name),
+		  __entry->namelen)
+);
+
+/* End of trace events for fs/ocfs2/namei.c. */
+
+/* Trace events for fs/ocfs2/dcache.c. */
+
+TRACE_EVENT(ocfs2_dentry_revalidate,
+	TP_PROTO(void *dentry, int len, const char *name),
+	TP_ARGS(dentry, len, name),
+	TP_STRUCT__entry(
+		__field(void *, dentry)
+		__field(int, len)
+		__string(name, name)
+	),
+	TP_fast_assign(
+		__entry->dentry = dentry;
+		__entry->len = len;
+		__assign_str(name, name);
+	),
+	TP_printk("%p %.*s", __entry->dentry, __entry->len, __get_str(name))
+);
+
+TRACE_EVENT(ocfs2_dentry_revalidate_negative,
+	TP_PROTO(int len, const char *name, unsigned long pgen,
+		 unsigned long gen),
+	TP_ARGS(len, name, pgen, gen),
+	TP_STRUCT__entry(
+		__field(int, len)
+		__string(name, name)
+		__field(unsigned long, pgen)
+		__field(unsigned long, gen)
+	),
+	TP_fast_assign(
+		__entry->len = len;
+		__assign_str(name, name);
+		__entry->pgen = pgen;
+		__entry->gen = gen;
+	),
+	TP_printk("%.*s %lu %lu", __entry->len, __get_str(name),
+		  __entry->pgen, __entry->gen)
+);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_dentry_revalidate_delete);
+
+DEFINE_OCFS2_ULL_INT_EVENT(ocfs2_dentry_revalidate_orphaned);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_dentry_revalidate_nofsdata);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_dentry_revalidate_ret);
+
+TRACE_EVENT(ocfs2_find_local_alias,
+	TP_PROTO(int len, const char *name),
+	TP_ARGS(len, name),
+	TP_STRUCT__entry(
+		__field(int, len)
+		__string(name, name)
+	),
+	TP_fast_assign(
+		__entry->len = len;
+		__assign_str(name, name);
+	),
+	TP_printk("%.*s", __entry->len, __get_str(name))
+);
+
+TRACE_EVENT(ocfs2_dentry_attach_lock,
+	TP_PROTO(int len, const char *name,
+		 unsigned long long parent, void *fsdata),
+	TP_ARGS(len, name, parent, fsdata),
+	TP_STRUCT__entry(
+		__field(int, len)
+		__string(name, name)
+		__field(unsigned long long, parent)
+		__field(void *, fsdata)
+	),
+	TP_fast_assign(
+		__entry->len = len;
+		__assign_str(name, name);
+		__entry->parent = parent;
+		__entry->fsdata = fsdata;
+	),
+	TP_printk("%.*s %llu %p", __entry->len, __get_str(name),
+		  __entry->parent, __entry->fsdata)
+);
+
+TRACE_EVENT(ocfs2_dentry_attach_lock_found,
+	TP_PROTO(const char *name, unsigned long long parent,
+		 unsigned long long ino),
+	TP_ARGS(name, parent, ino),
+	TP_STRUCT__entry(
+		__string(name, name)
+		__field(unsigned long long, parent)
+		__field(unsigned long long, ino)
+	),
+	TP_fast_assign(
+		__assign_str(name, name);
+		__entry->parent = parent;
+		__entry->ino = ino;
+	),
+	TP_printk("%s %llu %llu", __get_str(name), __entry->parent, __entry->ino)
+);
+/* End of trace events for fs/ocfs2/dcache.c. */
+
+/* Trace events for fs/ocfs2/export.c. */
+
+TRACE_EVENT(ocfs2_get_dentry_begin,
+	TP_PROTO(void *sb, void *handle, unsigned long long blkno),
+	TP_ARGS(sb, handle, blkno),
+	TP_STRUCT__entry(
+		__field(void *, sb)
+		__field(void *, handle)
+		__field(unsigned long long, blkno)
+	),
+	TP_fast_assign(
+		__entry->sb = sb;
+		__entry->handle = handle;
+		__entry->blkno = blkno;
+	),
+	TP_printk("%p %p %llu", __entry->sb, __entry->handle, __entry->blkno)
+);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_get_dentry_test_bit);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_get_dentry_stale);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_get_dentry_generation);
+
+DEFINE_OCFS2_POINTER_EVENT(ocfs2_get_dentry_end);
+
+TRACE_EVENT(ocfs2_get_parent,
+	TP_PROTO(void *child, int len, const char *name,
+		 unsigned long long ino),
+	TP_ARGS(child, len, name, ino),
+	TP_STRUCT__entry(
+		__field(void *,	child)
+		__field(int, len)
+		__string(name, name)
+		__field(unsigned long long, ino)
+	),
+	TP_fast_assign(
+		__entry->child = child;
+		__entry->len = len;
+		__assign_str(name, name);
+		__entry->ino = ino;
+	),
+	TP_printk("%p %.*s %llu", __entry->child, __entry->len,
+		  __get_str(name), __entry->ino)
+);
+
+DEFINE_OCFS2_POINTER_EVENT(ocfs2_get_parent_end);
+
+TRACE_EVENT(ocfs2_encode_fh_begin,
+	TP_PROTO(void *dentry, int name_len, const char *name,
+		 void *fh, int len, int connectable),
+	TP_ARGS(dentry, name_len, name, fh, len, connectable),
+	TP_STRUCT__entry(
+		__field(void *, dentry)
+		__field(int, name_len)
+		__string(name, name)
+		__field(void *, fh)
+		__field(int, len)
+		__field(int, connectable)
+	),
+	TP_fast_assign(
+		__entry->dentry = dentry;
+		__entry->name_len = name_len;
+		__assign_str(name, name);
+		__entry->fh = fh;
+		__entry->len = len;
+		__entry->connectable = connectable;
+	),
+	TP_printk("%p %.*s %p %d %d", __entry->dentry, __entry->name_len,
+		  __get_str(name), __entry->fh, __entry->len,
+		  __entry->connectable)
+);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_encode_fh_self);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_encode_fh_parent);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_encode_fh_type);
+
+/* End of trace events for fs/ocfs2/export.c. */
+
+/* Trace events for fs/ocfs2/journal.c. */
+
+DEFINE_OCFS2_UINT_EVENT(ocfs2_commit_cache_begin);
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_commit_cache_end);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_extend_trans);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_extend_trans_restart);
+
+DEFINE_OCFS2_ULL_ULL_UINT_UINT_EVENT(ocfs2_journal_access);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_journal_dirty);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_journal_init);
+
+DEFINE_OCFS2_UINT_EVENT(ocfs2_journal_init_maxlen);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_journal_shutdown);
+
+DEFINE_OCFS2_POINTER_EVENT(ocfs2_journal_shutdown_wait);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_complete_recovery);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_complete_recovery_end);
+
+TRACE_EVENT(ocfs2_complete_recovery_slot,
+	TP_PROTO(int slot, unsigned long long la_ino,
+		 unsigned long long tl_ino, void *qrec),
+	TP_ARGS(slot, la_ino, tl_ino, qrec),
+	TP_STRUCT__entry(
+		__field(int, slot)
+		__field(unsigned long long, la_ino)
+		__field(unsigned long long, tl_ino)
+		__field(void *, qrec)
+	),
+	TP_fast_assign(
+		__entry->slot = slot;
+		__entry->la_ino = la_ino;
+		__entry->tl_ino = tl_ino;
+		__entry->qrec = qrec;
+	),
+	TP_printk("%d %llu %llu %p", __entry->slot, __entry->la_ino,
+		  __entry->tl_ino, __entry->qrec)
+);
+
+DEFINE_OCFS2_INT_INT_EVENT(ocfs2_recovery_thread_node);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_recovery_thread_end);
+
+TRACE_EVENT(ocfs2_recovery_thread,
+	TP_PROTO(int node_num, int osb_node_num, int disable,
+		 void *recovery_thread, int map_set),
+	TP_ARGS(node_num, osb_node_num, disable, recovery_thread, map_set),
+	TP_STRUCT__entry(
+		__field(int, node_num)
+		__field(int, osb_node_num)
+		__field(int,disable)
+		__field(void *, recovery_thread)
+		__field(int,map_set)
+	),
+	TP_fast_assign(
+		__entry->node_num = node_num;
+		__entry->osb_node_num = osb_node_num;
+		__entry->disable = disable;
+		__entry->recovery_thread = recovery_thread;
+		__entry->map_set = map_set;
+	),
+	TP_printk("%d %d %d %p %d", __entry->node_num,
+		   __entry->osb_node_num, __entry->disable,
+		   __entry->recovery_thread, __entry->map_set)
+);
+
+DEFINE_OCFS2_UINT_UINT_UINT_EVENT(ocfs2_replay_journal_recovered);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_replay_journal_lock_err);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_replay_journal_skip);
+
+DEFINE_OCFS2_UINT_UINT_UINT_EVENT(ocfs2_recover_node);
+
+DEFINE_OCFS2_UINT_UINT_EVENT(ocfs2_recover_node_skip);
+
+DEFINE_OCFS2_UINT_UINT_EVENT(ocfs2_mark_dead_nodes);
+
+DEFINE_OCFS2_UINT_UINT_UINT_EVENT(ocfs2_queue_orphan_scan_begin);
+
+DEFINE_OCFS2_UINT_UINT_UINT_EVENT(ocfs2_queue_orphan_scan_end);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_orphan_filldir);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_recover_orphans);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_recover_orphans_iput);
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_wait_on_mount);
+
+/* End of trace events for fs/ocfs2/journal.c. */
+
+/* Trace events for fs/ocfs2/buffer_head_io.c. */
+
+DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_read_blocks_sync);
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_read_blocks_sync_jbd);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_read_blocks_from_disk);
+
+DEFINE_OCFS2_ULL_INT_INT_INT_EVENT(ocfs2_read_blocks_bh);
+
+DEFINE_OCFS2_ULL_INT_INT_INT_EVENT(ocfs2_read_blocks_end);
+
+TRACE_EVENT(ocfs2_write_block,
+	TP_PROTO(unsigned long long block, void *ci),
+	TP_ARGS(block, ci),
+	TP_STRUCT__entry(
+		__field(unsigned long long, block)
+		__field(void *, ci)
+	),
+	TP_fast_assign(
+		__entry->block = block;
+		__entry->ci = ci;
+	),
+	TP_printk("%llu %p", __entry->block, __entry->ci)
+);
+
+TRACE_EVENT(ocfs2_read_blocks_begin,
+	TP_PROTO(void *ci, unsigned long long block,
+		 unsigned int nr, int flags),
+	TP_ARGS(ci, block, nr, flags),
+	TP_STRUCT__entry(
+		__field(void *, ci)
+		__field(unsigned long long, block)
+		__field(unsigned int, nr)
+		__field(int, flags)
+	),
+	TP_fast_assign(
+		__entry->ci = ci;
+		__entry->block = block;
+		__entry->nr = nr;
+		__entry->flags = flags;
+	),
+	TP_printk("%p %llu %u %d", __entry->ci, __entry->block,
+		  __entry->nr, __entry->flags)
+);
+
+/* End of trace events for fs/ocfs2/buffer_head_io.c. */
+
+/* Trace events for fs/ocfs2/uptodate.c. */
+
+DEFINE_OCFS2_ULL_EVENT(ocfs2_purge_copied_metadata_tree);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_metadata_cache_purge);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_buffer_cached_begin);
+
+TRACE_EVENT(ocfs2_buffer_cached_end,
+	TP_PROTO(int index, void *item),
+	TP_ARGS(index, item),
+	TP_STRUCT__entry(
+		__field(int, index)
+		__field(void *, item)
+	),
+	TP_fast_assign(
+		__entry->index = index;
+		__entry->item = item;
+	),
+	TP_printk("%d %p", __entry->index, __entry->item)
+);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_append_cache_array);
+
+DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_insert_cache_tree);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_expand_cache);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_set_buffer_uptodate);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_set_buffer_uptodate_begin);
+
+DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_remove_metadata_array);
+
+DEFINE_OCFS2_ULL_ULL_EVENT(ocfs2_remove_metadata_tree);
+
+DEFINE_OCFS2_ULL_ULL_UINT_UINT_EVENT(ocfs2_remove_block_from_cache);
+
+/* End of trace events for fs/ocfs2/uptodate.c. */
+#endif /* _TRACE_OCFS2_H */
+
+/* This part must be outside protection */
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE ocfs2_trace
+#include <trace/define_trace.h>
diff --git a/fs/ocfs2/quota_global.c b/fs/ocfs2/quota_global.c
index a73f641..279aef6 100644
--- a/fs/ocfs2/quota_global.c
+++ b/fs/ocfs2/quota_global.c
@@ -11,7 +11,6 @@
 #include <linux/writeback.h>
 #include <linux/workqueue.h>
 
-#define MLOG_MASK_PREFIX ML_QUOTA
 #include <cluster/masklog.h>
 
 #include "ocfs2_fs.h"
@@ -27,6 +26,7 @@
 #include "super.h"
 #include "buffer_head_io.h"
 #include "quota.h"
+#include "ocfs2_trace.h"
 
 /*
  * Locking of quotas with OCFS2 is rather complex. Here are rules that
@@ -130,8 +130,7 @@ int ocfs2_validate_quota_block(struct super_block *sb, struct buffer_head *bh)
 	struct ocfs2_disk_dqtrailer *dqt =
 		ocfs2_block_dqtrailer(sb->s_blocksize, bh->b_data);
 
-	mlog(0, "Validating quota block %llu\n",
-	     (unsigned long long)bh->b_blocknr);
+	trace_ocfs2_validate_quota_block((unsigned long long)bh->b_blocknr);
 
 	BUG_ON(!buffer_uptodate(bh));
 
@@ -341,8 +340,6 @@ int ocfs2_global_read_info(struct super_block *sb, int type)
 	u64 pcount;
 	int status;
 
-	mlog_entry_void();
-
 	/* Read global header */
 	gqinode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type],
 			OCFS2_INVALID_SLOT);
@@ -402,7 +399,8 @@ int ocfs2_global_read_info(struct super_block *sb, int type)
 			      msecs_to_jiffies(oinfo->dqi_syncms));
 
 out_err:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 out_unlock:
 	ocfs2_unlock_global_qf(oinfo, 0);
@@ -508,9 +506,10 @@ int __ocfs2_sync_dquot(struct dquot *dquot, int freeing)
 	olditime = dquot->dq_dqb.dqb_itime;
 	oldbtime = dquot->dq_dqb.dqb_btime;
 	ocfs2_global_disk2memdqb(dquot, &dqblk);
-	mlog(0, "Syncing global dquot %u space %lld+%lld, inodes %lld+%lld\n",
-	     dquot->dq_id, dquot->dq_dqb.dqb_curspace, (long long)spacechange,
-	     dquot->dq_dqb.dqb_curinodes, (long long)inodechange);
+	trace_ocfs2_sync_dquot(dquot->dq_id, dquot->dq_dqb.dqb_curspace,
+			       (long long)spacechange,
+			       dquot->dq_dqb.dqb_curinodes,
+			       (long long)inodechange);
 	if (!test_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags))
 		dquot->dq_dqb.dqb_curspace += spacechange;
 	if (!test_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags))
@@ -594,8 +593,8 @@ static int ocfs2_sync_dquot_helper(struct dquot *dquot, unsigned long type)
 	struct ocfs2_super *osb = OCFS2_SB(sb);
 	int status = 0;
 
-	mlog_entry("id=%u qtype=%u type=%lu device=%s\n", dquot->dq_id,
-		   dquot->dq_type, type, sb->s_id);
+	trace_ocfs2_sync_dquot_helper(dquot->dq_id, dquot->dq_type,
+				      type, sb->s_id);
 	if (type != dquot->dq_type)
 		goto out;
 	status = ocfs2_lock_global_qf(oinfo, 1);
@@ -621,7 +620,6 @@ static int ocfs2_sync_dquot_helper(struct dquot *dquot, unsigned long type)
 out_ilock:
 	ocfs2_unlock_global_qf(oinfo, 1);
 out:
-	mlog_exit(status);
 	return status;
 }
 
@@ -647,7 +645,7 @@ static int ocfs2_write_dquot(struct dquot *dquot)
 	struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb);
 	int status = 0;
 
-	mlog_entry("id=%u, type=%d", dquot->dq_id, dquot->dq_type);
+	trace_ocfs2_write_dquot(dquot->dq_id, dquot->dq_type);
 
 	handle = ocfs2_start_trans(osb, OCFS2_QWRITE_CREDITS);
 	if (IS_ERR(handle)) {
@@ -660,7 +658,6 @@ static int ocfs2_write_dquot(struct dquot *dquot)
 	mutex_unlock(&sb_dqopt(dquot->dq_sb)->dqio_mutex);
 	ocfs2_commit_trans(osb, handle);
 out:
-	mlog_exit(status);
 	return status;
 }
 
@@ -686,7 +683,7 @@ static int ocfs2_release_dquot(struct dquot *dquot)
 	struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb);
 	int status = 0;
 
-	mlog_entry("id=%u, type=%d", dquot->dq_id, dquot->dq_type);
+	trace_ocfs2_release_dquot(dquot->dq_id, dquot->dq_type);
 
 	mutex_lock(&dquot->dq_lock);
 	/* Check whether we are not racing with some other dqget() */
@@ -722,7 +719,8 @@ out_ilock:
 	ocfs2_unlock_global_qf(oinfo, 1);
 out:
 	mutex_unlock(&dquot->dq_lock);
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -743,7 +741,7 @@ static int ocfs2_acquire_dquot(struct dquot *dquot)
 	int need_alloc = ocfs2_global_qinit_alloc(sb, type);
 	handle_t *handle;
 
-	mlog_entry("id=%u, type=%d", dquot->dq_id, type);
+	trace_ocfs2_acquire_dquot(dquot->dq_id, type);
 	mutex_lock(&dquot->dq_lock);
 	/*
 	 * We need an exclusive lock, because we're going to update use count
@@ -809,7 +807,8 @@ out_dq:
 	set_bit(DQ_ACTIVE_B, &dquot->dq_flags);
 out:
 	mutex_unlock(&dquot->dq_lock);
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -829,7 +828,7 @@ static int ocfs2_mark_dquot_dirty(struct dquot *dquot)
 	handle_t *handle;
 	struct ocfs2_super *osb = OCFS2_SB(sb);
 
-	mlog_entry("id=%u, type=%d", dquot->dq_id, type);
+	trace_ocfs2_mark_dquot_dirty(dquot->dq_id, type);
 
 	/* In case user set some limits, sync dquot immediately to global
 	 * quota file so that information propagates quicker */
@@ -866,7 +865,8 @@ out_dlock:
 out_ilock:
 	ocfs2_unlock_global_qf(oinfo, 1);
 out:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -877,8 +877,6 @@ static int ocfs2_write_info(struct super_block *sb, int type)
 	int status = 0;
 	struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv;
 
-	mlog_entry_void();
-
 	status = ocfs2_lock_global_qf(oinfo, 1);
 	if (status < 0)
 		goto out;
@@ -893,7 +891,8 @@ static int ocfs2_write_info(struct super_block *sb, int type)
 out_ilock:
 	ocfs2_unlock_global_qf(oinfo, 1);
 out:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c
index dc78764..dc8007f 100644
--- a/fs/ocfs2/quota_local.c
+++ b/fs/ocfs2/quota_local.c
@@ -8,7 +8,6 @@
 #include <linux/quotaops.h>
 #include <linux/module.h>
 
-#define MLOG_MASK_PREFIX ML_QUOTA
 #include <cluster/masklog.h>
 
 #include "ocfs2_fs.h"
@@ -23,6 +22,7 @@
 #include "quota.h"
 #include "uptodate.h"
 #include "super.h"
+#include "ocfs2_trace.h"
 
 /* Number of local quota structures per block */
 static inline unsigned int ol_quota_entries_per_block(struct super_block *sb)
@@ -475,7 +475,7 @@ static int ocfs2_recover_local_quota_file(struct inode *lqinode,
 	struct ocfs2_recovery_chunk *rchunk, *next;
 	qsize_t spacechange, inodechange;
 
-	mlog_entry("ino=%lu type=%u", (unsigned long)lqinode->i_ino, type);
+	trace_ocfs2_recover_local_quota_file((unsigned long)lqinode->i_ino, type);
 
 	list_for_each_entry_safe(rchunk, next, &(rec->r_list[type]), rc_list) {
 		chunk = rchunk->rc_chunk;
@@ -575,7 +575,8 @@ out_put_bh:
 	}
 	if (status < 0)
 		free_recovery_list(&(rec->r_list[type]));
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -600,7 +601,7 @@ int ocfs2_finish_quota_recovery(struct ocfs2_super *osb,
 	for (type = 0; type < MAXQUOTAS; type++) {
 		if (list_empty(&(rec->r_list[type])))
 			continue;
-		mlog(0, "Recovering quota in slot %d\n", slot_num);
+		trace_ocfs2_finish_quota_recovery(slot_num);
 		lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num);
 		if (!lqinode) {
 			status = -ENOENT;
@@ -882,9 +883,10 @@ static void olq_set_dquot(struct buffer_head *bh, void *private)
 	dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes -
 					  od->dq_originodes);
 	spin_unlock(&dq_data_lock);
-	mlog(0, "Writing local dquot %u space %lld inodes %lld\n",
-	     od->dq_dquot.dq_id, (long long)le64_to_cpu(dqblk->dqb_spacemod),
-	     (long long)le64_to_cpu(dqblk->dqb_inodemod));
+	trace_olq_set_dquot(
+		(unsigned long long)le64_to_cpu(dqblk->dqb_spacemod),
+		(unsigned long long)le64_to_cpu(dqblk->dqb_inodemod),
+		od->dq_dquot.dq_id);
 }
 
 /* Write dquot to local quota file */
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index c384d63..5d32749 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -16,7 +16,6 @@
  */
 
 #include <linux/sort.h>
-#define MLOG_MASK_PREFIX ML_REFCOUNT
 #include <cluster/masklog.h>
 #include "ocfs2.h"
 #include "inode.h"
@@ -34,6 +33,7 @@
 #include "aops.h"
 #include "xattr.h"
 #include "namei.h"
+#include "ocfs2_trace.h"
 
 #include <linux/bio.h>
 #include <linux/blkdev.h>
@@ -84,8 +84,7 @@ static int ocfs2_validate_refcount_block(struct super_block *sb,
 	struct ocfs2_refcount_block *rb =
 		(struct ocfs2_refcount_block *)bh->b_data;
 
-	mlog(0, "Validating refcount block %llu\n",
-	     (unsigned long long)bh->b_blocknr);
+	trace_ocfs2_validate_refcount_block((unsigned long long)bh->b_blocknr);
 
 	BUG_ON(!buffer_uptodate(bh));
 
@@ -545,8 +544,8 @@ void ocfs2_purge_refcount_trees(struct ocfs2_super *osb)
 	while ((node = rb_last(root)) != NULL) {
 		tree = rb_entry(node, struct ocfs2_refcount_tree, rf_node);
 
-		mlog(0, "Purge tree %llu\n",
-		     (unsigned long long) tree->rf_blkno);
+		trace_ocfs2_purge_refcount_trees(
+				(unsigned long long) tree->rf_blkno);
 
 		rb_erase(&tree->rf_node, root);
 		ocfs2_free_refcount_tree(tree);
@@ -575,7 +574,8 @@ static int ocfs2_create_refcount_tree(struct inode *inode,
 
 	BUG_ON(oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL);
 
-	mlog(0, "create tree for inode %lu\n", inode->i_ino);
+	trace_ocfs2_create_refcount_tree(
+		(unsigned long long)OCFS2_I(inode)->ip_blkno);
 
 	ret = ocfs2_reserve_new_metadata_blocks(osb, 1, &meta_ac);
 	if (ret) {
@@ -646,8 +646,7 @@ static int ocfs2_create_refcount_tree(struct inode *inode,
 	di->i_refcount_loc = cpu_to_le64(first_blkno);
 	spin_unlock(&oi->ip_lock);
 
-	mlog(0, "created tree for inode %lu, refblock %llu\n",
-	     inode->i_ino, (unsigned long long)first_blkno);
+	trace_ocfs2_create_refcount_tree_blkno((unsigned long long)first_blkno);
 
 	ocfs2_journal_dirty(handle, di_bh);
 
@@ -1256,8 +1255,9 @@ static int ocfs2_change_refcount_rec(handle_t *handle,
 		goto out;
 	}
 
-	mlog(0, "change index %d, old count %u, change %d\n", index,
-	     le32_to_cpu(rec->r_refcount), change);
+	trace_ocfs2_change_refcount_rec(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		index, le32_to_cpu(rec->r_refcount), change);
 	le32_add_cpu(&rec->r_refcount, change);
 
 	if (!rec->r_refcount) {
@@ -1353,8 +1353,8 @@ static int ocfs2_expand_inline_ref_root(handle_t *handle,
 
 	ocfs2_journal_dirty(handle, ref_root_bh);
 
-	mlog(0, "new leaf block %llu, used %u\n", (unsigned long long)blkno,
-	     le16_to_cpu(new_rb->rf_records.rl_used));
+	trace_ocfs2_expand_inline_ref_root((unsigned long long)blkno,
+		le16_to_cpu(new_rb->rf_records.rl_used));
 
 	*ref_leaf_bh = new_bh;
 	new_bh = NULL;
@@ -1466,9 +1466,9 @@ static int ocfs2_divide_leaf_refcount_block(struct buffer_head *ref_leaf_bh,
 			(struct ocfs2_refcount_block *)new_bh->b_data;
 	struct ocfs2_refcount_list *new_rl = &new_rb->rf_records;
 
-	mlog(0, "split old leaf refcount block %llu, count = %u, used = %u\n",
-	     (unsigned long long)ref_leaf_bh->b_blocknr,
-	     le32_to_cpu(rl->rl_count), le32_to_cpu(rl->rl_used));
+	trace_ocfs2_divide_leaf_refcount_block(
+		(unsigned long long)ref_leaf_bh->b_blocknr,
+		le32_to_cpu(rl->rl_count), le32_to_cpu(rl->rl_used));
 
 	/*
 	 * XXX: Improvement later.
@@ -1601,8 +1601,8 @@ static int ocfs2_new_leaf_refcount_block(handle_t *handle,
 
 	ocfs2_init_refcount_extent_tree(&ref_et, ci, ref_root_bh);
 
-	mlog(0, "insert new leaf block %llu at %u\n",
-	     (unsigned long long)new_bh->b_blocknr, new_cpos);
+	trace_ocfs2_new_leaf_refcount_block(
+			(unsigned long long)new_bh->b_blocknr, new_cpos);
 
 	/* Insert the new leaf block with the specific offset cpos. */
 	ret = ocfs2_insert_extent(handle, &ref_et, new_cpos, new_bh->b_blocknr,
@@ -1794,11 +1794,10 @@ static int ocfs2_insert_refcount_rec(handle_t *handle,
 			(le16_to_cpu(rf_list->rl_used) - index) *
 			 sizeof(struct ocfs2_refcount_rec));
 
-	mlog(0, "insert refcount record start %llu, len %u, count %u "
-	     "to leaf block %llu at index %d\n",
-	     (unsigned long long)le64_to_cpu(rec->r_cpos),
-	     le32_to_cpu(rec->r_clusters), le32_to_cpu(rec->r_refcount),
-	     (unsigned long long)ref_leaf_bh->b_blocknr, index);
+	trace_ocfs2_insert_refcount_rec(
+		(unsigned long long)ref_leaf_bh->b_blocknr, index,
+		(unsigned long long)le64_to_cpu(rec->r_cpos),
+		le32_to_cpu(rec->r_clusters), le32_to_cpu(rec->r_refcount));
 
 	rf_list->rl_recs[index] = *rec;
 
@@ -1850,10 +1849,12 @@ static int ocfs2_split_refcount_rec(handle_t *handle,
 
 	BUG_ON(le32_to_cpu(rb->rf_flags) & OCFS2_REFCOUNT_TREE_FL);
 
-	mlog(0, "original r_pos %llu, cluster %u, split %llu, cluster %u\n",
-	     le64_to_cpu(orig_rec->r_cpos), le32_to_cpu(orig_rec->r_clusters),
-	     le64_to_cpu(split_rec->r_cpos),
-	     le32_to_cpu(split_rec->r_clusters));
+	trace_ocfs2_split_refcount_rec(le64_to_cpu(orig_rec->r_cpos),
+		le32_to_cpu(orig_rec->r_clusters),
+		le32_to_cpu(orig_rec->r_refcount),
+		le64_to_cpu(split_rec->r_cpos),
+		le32_to_cpu(split_rec->r_clusters),
+		le32_to_cpu(split_rec->r_refcount));
 
 	/*
 	 * If we just need to split the header or tail clusters,
@@ -1967,12 +1968,11 @@ static int ocfs2_split_refcount_rec(handle_t *handle,
 
 	if (split_rec->r_refcount) {
 		rf_list->rl_recs[index] = *split_rec;
-		mlog(0, "insert refcount record start %llu, len %u, count %u "
-		     "to leaf block %llu at index %d\n",
-		     (unsigned long long)le64_to_cpu(split_rec->r_cpos),
-		     le32_to_cpu(split_rec->r_clusters),
-		     le32_to_cpu(split_rec->r_refcount),
-		     (unsigned long long)ref_leaf_bh->b_blocknr, index);
+		trace_ocfs2_split_refcount_rec_insert(
+			(unsigned long long)ref_leaf_bh->b_blocknr, index,
+			(unsigned long long)le64_to_cpu(split_rec->r_cpos),
+			le32_to_cpu(split_rec->r_clusters),
+			le32_to_cpu(split_rec->r_refcount));
 
 		if (merge)
 			ocfs2_refcount_rec_merge(rb, index);
@@ -1997,7 +1997,7 @@ static int __ocfs2_increase_refcount(handle_t *handle,
 	struct ocfs2_refcount_rec rec;
 	unsigned int set_len = 0;
 
-	mlog(0, "Tree owner %llu, add refcount start %llu, len %u\n",
+	trace_ocfs2_increase_refcount_begin(
 	     (unsigned long long)ocfs2_metadata_cache_owner(ci),
 	     (unsigned long long)cpos, len);
 
@@ -2024,9 +2024,9 @@ static int __ocfs2_increase_refcount(handle_t *handle,
 		 */
 		if (rec.r_refcount && le64_to_cpu(rec.r_cpos) == cpos &&
 		    set_len <= len) {
-			mlog(0, "increase refcount rec, start %llu, len %u, "
-			     "count %u\n", (unsigned long long)cpos, set_len,
-			     le32_to_cpu(rec.r_refcount));
+			trace_ocfs2_increase_refcount_change(
+				(unsigned long long)cpos, set_len,
+				le32_to_cpu(rec.r_refcount));
 			ret = ocfs2_change_refcount_rec(handle, ci,
 							ref_leaf_bh, index,
 							merge, 1);
@@ -2037,7 +2037,7 @@ static int __ocfs2_increase_refcount(handle_t *handle,
 		} else if (!rec.r_refcount) {
 			rec.r_refcount = cpu_to_le32(1);
 
-			mlog(0, "insert refcount rec, start %llu, len %u\n",
+			trace_ocfs2_increase_refcount_insert(
 			     (unsigned long long)le64_to_cpu(rec.r_cpos),
 			     set_len);
 			ret = ocfs2_insert_refcount_rec(handle, ci, ref_root_bh,
@@ -2055,8 +2055,7 @@ static int __ocfs2_increase_refcount(handle_t *handle,
 			rec.r_clusters = cpu_to_le32(set_len);
 			le32_add_cpu(&rec.r_refcount, 1);
 
-			mlog(0, "split refcount rec, start %llu, "
-			     "len %u, count %u\n",
+			trace_ocfs2_increase_refcount_split(
 			     (unsigned long long)le64_to_cpu(rec.r_cpos),
 			     set_len, le32_to_cpu(rec.r_refcount));
 			ret = ocfs2_split_refcount_rec(handle, ci,
@@ -2095,6 +2094,11 @@ static int ocfs2_remove_refcount_extent(handle_t *handle,
 
 	BUG_ON(rb->rf_records.rl_used);
 
+	trace_ocfs2_remove_refcount_extent(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		(unsigned long long)ref_leaf_bh->b_blocknr,
+		le32_to_cpu(rb->rf_cpos));
+
 	ocfs2_init_refcount_extent_tree(&et, ci, ref_root_bh);
 	ret = ocfs2_remove_extent(handle, &et, le32_to_cpu(rb->rf_cpos),
 				  1, meta_ac, dealloc);
@@ -2137,7 +2141,7 @@ static int ocfs2_remove_refcount_extent(handle_t *handle,
 	if (!rb->rf_list.l_next_free_rec) {
 		BUG_ON(rb->rf_clusters);
 
-		mlog(0, "reset refcount tree root %llu to be a record block.\n",
+		trace_ocfs2_restore_refcount_block(
 		     (unsigned long long)ref_root_bh->b_blocknr);
 
 		rb->rf_flags = 0;
@@ -2184,6 +2188,10 @@ static int ocfs2_decrease_refcount_rec(handle_t *handle,
 	BUG_ON(cpos + len >
 	       le64_to_cpu(rec->r_cpos) + le32_to_cpu(rec->r_clusters));
 
+	trace_ocfs2_decrease_refcount_rec(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		(unsigned long long)cpos, len);
+
 	if (cpos == le64_to_cpu(rec->r_cpos) &&
 	    len == le32_to_cpu(rec->r_clusters))
 		ret = ocfs2_change_refcount_rec(handle, ci,
@@ -2195,12 +2203,6 @@ static int ocfs2_decrease_refcount_rec(handle_t *handle,
 
 		le32_add_cpu(&split.r_refcount, -1);
 
-		mlog(0, "split refcount rec, start %llu, "
-		     "len %u, count %u, original start %llu, len %u\n",
-		     (unsigned long long)le64_to_cpu(split.r_cpos),
-		     len, le32_to_cpu(split.r_refcount),
-		     (unsigned long long)le64_to_cpu(rec->r_cpos),
-		     le32_to_cpu(rec->r_clusters));
 		ret = ocfs2_split_refcount_rec(handle, ci,
 					       ref_root_bh, ref_leaf_bh,
 					       &split, index, 1,
@@ -2239,10 +2241,9 @@ static int __ocfs2_decrease_refcount(handle_t *handle,
 	struct super_block *sb = ocfs2_metadata_cache_get_super(ci);
 	struct buffer_head *ref_leaf_bh = NULL;
 
-	mlog(0, "Tree owner %llu, decrease refcount start %llu, "
-	     "len %u, delete %u\n",
-	     (unsigned long long)ocfs2_metadata_cache_owner(ci),
-	     (unsigned long long)cpos, len, delete);
+	trace_ocfs2_decrease_refcount(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		(unsigned long long)cpos, len, delete);
 
 	while (len) {
 		ret = ocfs2_get_refcount_rec(ci, ref_root_bh,
@@ -2352,8 +2353,8 @@ static int ocfs2_mark_extent_refcounted(struct inode *inode,
 {
 	int ret;
 
-	mlog(0, "Inode %lu refcount tree cpos %u, len %u, phys cluster %u\n",
-	     inode->i_ino, cpos, len, phys);
+	trace_ocfs2_mark_extent_refcounted(OCFS2_I(inode)->ip_blkno,
+					   cpos, len, phys);
 
 	if (!ocfs2_refcount_tree(OCFS2_SB(inode->i_sb))) {
 		ocfs2_error(inode->i_sb, "Inode %lu want to use refcount "
@@ -2392,8 +2393,6 @@ static int ocfs2_calc_refcount_meta_credits(struct super_block *sb,
 	struct buffer_head *ref_leaf_bh = NULL, *prev_bh = NULL;
 	u32 len;
 
-	mlog(0, "start_cpos %llu, clusters %u\n",
-	     (unsigned long long)start_cpos, clusters);
 	while (clusters) {
 		ret = ocfs2_get_refcount_rec(ci, ref_root_bh,
 					     cpos, clusters, &rec,
@@ -2427,12 +2426,11 @@ static int ocfs2_calc_refcount_meta_credits(struct super_block *sb,
 
 		rb = (struct ocfs2_refcount_block *)ref_leaf_bh->b_data;
 
-		mlog(0, "recs_add %d,cpos %llu, clusters %u, rec->r_cpos %llu,"
-		     "rec->r_clusters %u, rec->r_refcount %u, index %d\n",
-		     recs_add, (unsigned long long)cpos, clusters,
-		     (unsigned long long)le64_to_cpu(rec.r_cpos),
-		     le32_to_cpu(rec.r_clusters),
-		     le32_to_cpu(rec.r_refcount), index);
+		trace_ocfs2_calc_refcount_meta_credits_iterate(
+				recs_add, (unsigned long long)cpos, clusters,
+				(unsigned long long)le64_to_cpu(rec.r_cpos),
+				le32_to_cpu(rec.r_clusters),
+				le32_to_cpu(rec.r_refcount), index);
 
 		len = min((u64)cpos + clusters, le64_to_cpu(rec.r_cpos) +
 			  le32_to_cpu(rec.r_clusters)) - cpos;
@@ -2488,7 +2486,6 @@ static int ocfs2_calc_refcount_meta_credits(struct super_block *sb,
 	if (!ref_blocks)
 		goto out;
 
-	mlog(0, "we need ref_blocks %d\n", ref_blocks);
 	*meta_add += ref_blocks;
 	*credits += ref_blocks;
 
@@ -2514,6 +2511,10 @@ static int ocfs2_calc_refcount_meta_credits(struct super_block *sb,
 	}
 
 out:
+
+	trace_ocfs2_calc_refcount_meta_credits(
+		(unsigned long long)start_cpos, clusters,
+		*meta_add, *credits);
 	brelse(ref_leaf_bh);
 	brelse(prev_bh);
 	return ret;
@@ -2578,8 +2579,7 @@ int ocfs2_prepare_refcount_change_for_del(struct inode *inode,
 		goto out;
 	}
 
-	mlog(0, "reserve new metadata %d blocks, credits = %d\n",
-	     *ref_blocks, *credits);
+	trace_ocfs2_prepare_refcount_change_for_del(*ref_blocks, *credits);
 
 out:
 	brelse(ref_root_bh);
@@ -2886,8 +2886,7 @@ static int ocfs2_lock_refcount_allocators(struct super_block *sb,
 		goto out;
 	}
 
-	mlog(0, "reserve new metadata %d, clusters %u, credits = %d\n",
-	     meta_add, num_clusters, *credits);
+	trace_ocfs2_lock_refcount_allocators(meta_add, *credits);
 	ret = ocfs2_reserve_new_metadata_blocks(OCFS2_SB(sb), meta_add,
 						meta_ac);
 	if (ret) {
@@ -2937,8 +2936,8 @@ static int ocfs2_duplicate_clusters_by_page(handle_t *handle,
 	loff_t offset, end, map_end;
 	struct address_space *mapping = context->inode->i_mapping;
 
-	mlog(0, "old_cluster %u, new %u, len %u at offset %u\n", old_cluster,
-	     new_cluster, new_len, cpos);
+	trace_ocfs2_duplicate_clusters_by_page(cpos, old_cluster,
+					       new_cluster, new_len);
 
 	readahead_pages =
 		(ocfs2_cow_contig_clusters(sb) <<
@@ -3031,8 +3030,8 @@ static int ocfs2_duplicate_clusters_by_jbd(handle_t *handle,
 	struct buffer_head *old_bh = NULL;
 	struct buffer_head *new_bh = NULL;
 
-	mlog(0, "old_cluster %u, new %u, len %u\n", old_cluster,
-	     new_cluster, new_len);
+	trace_ocfs2_duplicate_clusters_by_page(cpos, old_cluster,
+					       new_cluster, new_len);
 
 	for (i = 0; i < blocks; i++, old_block++, new_block++) {
 		new_bh = sb_getblk(osb->sb, new_block);
@@ -3085,8 +3084,8 @@ static int ocfs2_clear_ext_refcount(handle_t *handle,
 	struct super_block *sb = ocfs2_metadata_cache_get_super(et->et_ci);
 	u64 ino = ocfs2_metadata_cache_owner(et->et_ci);
 
-	mlog(0, "inode %llu cpos %u, len %u, p_cluster %u, ext_flags %u\n",
-	     (unsigned long long)ino, cpos, len, p_cluster, ext_flags);
+	trace_ocfs2_clear_ext_refcount((unsigned long long)ino,
+				       cpos, len, p_cluster, ext_flags);
 
 	memset(&replace_rec, 0, sizeof(replace_rec));
 	replace_rec.e_cpos = cpu_to_le32(cpos);
@@ -3141,8 +3140,8 @@ static int ocfs2_replace_clusters(handle_t *handle,
 	struct ocfs2_caching_info *ci = context->data_et.et_ci;
 	u64 ino = ocfs2_metadata_cache_owner(ci);
 
-	mlog(0, "inode %llu, cpos %u, old %u, new %u, len %u, ext_flags %u\n",
-	     (unsigned long long)ino, cpos, old, new, len, ext_flags);
+	trace_ocfs2_replace_clusters((unsigned long long)ino,
+				     cpos, old, new, len, ext_flags);
 
 	/*If the old clusters is unwritten, no need to duplicate. */
 	if (!(ext_flags & OCFS2_EXT_UNWRITTEN)) {
@@ -3236,8 +3235,8 @@ static int ocfs2_make_clusters_writable(struct super_block *sb,
 	struct ocfs2_caching_info *ref_ci = &context->ref_tree->rf_ci;
 	struct ocfs2_refcount_rec rec;
 
-	mlog(0, "cpos %u, p_cluster %u, num_clusters %u, e_flags %u\n",
-	     cpos, p_cluster, num_clusters, e_flags);
+	trace_ocfs2_make_clusters_writable(cpos, p_cluster,
+					   num_clusters, e_flags);
 
 	ret = ocfs2_lock_refcount_allocators(sb, p_cluster, num_clusters,
 					     &context->data_et,
@@ -3475,9 +3474,9 @@ static int ocfs2_refcount_cow_hunk(struct inode *inode,
 		goto out;
 	}
 
-	mlog(0, "CoW inode %lu, cpos %u, write_len %u, cow_start %u, "
-	     "cow_len %u\n", inode->i_ino,
-	     cpos, write_len, cow_start, cow_len);
+	trace_ocfs2_refcount_cow_hunk(OCFS2_I(inode)->ip_blkno,
+				      cpos, write_len, max_cpos,
+				      cow_start, cow_len);
 
 	BUG_ON(cow_len == 0);
 
@@ -3756,8 +3755,7 @@ int ocfs2_add_refcount_flag(struct inode *inode,
 		goto out;
 	}
 
-	mlog(0, "reserve new metadata %d, credits = %d\n",
-	     ref_blocks, credits);
+	trace_ocfs2_add_refcount_flag(ref_blocks, credits);
 
 	if (ref_blocks) {
 		ret = ocfs2_reserve_new_metadata_blocks(OCFS2_SB(inode->i_sb),
diff --git a/fs/ocfs2/reservations.c b/fs/ocfs2/reservations.c
index 3e78db3..41ffd36 100644
--- a/fs/ocfs2/reservations.c
+++ b/fs/ocfs2/reservations.c
@@ -30,10 +30,10 @@
 #include <linux/bitops.h>
 #include <linux/list.h>
 
-#define MLOG_MASK_PREFIX ML_RESERVATIONS
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
+#include "ocfs2_trace.h"
 
 #ifdef CONFIG_OCFS2_DEBUG_FS
 #define OCFS2_CHECK_RESERVATIONS
@@ -321,8 +321,7 @@ static void ocfs2_resv_insert(struct ocfs2_reservation_map *resmap,
 
 	assert_spin_locked(&resv_lock);
 
-	mlog(0, "Insert reservation start: %u len: %u\n", new->r_start,
-	     new->r_len);
+	trace_ocfs2_resv_insert(new->r_start, new->r_len);
 
 	while (*p) {
 		parent = *p;
@@ -423,8 +422,8 @@ static int ocfs2_resmap_find_free_bits(struct ocfs2_reservation_map *resmap,
 	unsigned int best_start, best_len = 0;
 	int offset, start, found;
 
-	mlog(0, "Find %u bits within range (%u, len %u) resmap len: %u\n",
-	     wanted, search_start, search_len, resmap->m_bitmap_len);
+	trace_ocfs2_resmap_find_free_bits_begin(search_start, search_len,
+						wanted, resmap->m_bitmap_len);
 
 	found = best_start = best_len = 0;
 
@@ -463,7 +462,7 @@ static int ocfs2_resmap_find_free_bits(struct ocfs2_reservation_map *resmap,
 	*rlen = best_len;
 	*rstart = best_start;
 
-	mlog(0, "Found start: %u len: %u\n", best_start, best_len);
+	trace_ocfs2_resmap_find_free_bits_end(best_start, best_len);
 
 	return *rlen;
 }
@@ -487,9 +486,8 @@ static void __ocfs2_resv_find_window(struct ocfs2_reservation_map *resmap,
 	 * - our window should be last in all reservations
 	 * - need to make sure we don't go past end of bitmap
 	 */
-
-	mlog(0, "resv start: %u resv end: %u goal: %u wanted: %u\n",
-	     resv->r_start, ocfs2_resv_end(resv), goal, wanted);
+	trace_ocfs2_resv_find_window_begin(resv->r_start, ocfs2_resv_end(resv),
+					   goal, wanted, RB_EMPTY_ROOT(root));
 
 	assert_spin_locked(&resv_lock);
 
@@ -498,9 +496,6 @@ static void __ocfs2_resv_find_window(struct ocfs2_reservation_map *resmap,
 		 * Easiest case - empty tree. We can just take
 		 * whatever window of free bits we want.
 		 */
-
-		mlog(0, "Empty root\n");
-
 		clen = ocfs2_resmap_find_free_bits(resmap, wanted, goal,
 						   resmap->m_bitmap_len - goal,
 						   &cstart, &clen);
@@ -524,8 +519,6 @@ static void __ocfs2_resv_find_window(struct ocfs2_reservation_map *resmap,
 	prev_resv = ocfs2_find_resv_lhs(resmap, goal);
 
 	if (prev_resv == NULL) {
-		mlog(0, "Goal on LHS of leftmost window\n");
-
 		/*
 		 * A NULL here means that the search code couldn't
 		 * find a window that starts before goal.
@@ -570,13 +563,15 @@ static void __ocfs2_resv_find_window(struct ocfs2_reservation_map *resmap,
 		next_resv = NULL;
 	}
 
+	trace_ocfs2_resv_find_window_prev(prev_resv->r_start,
+					  ocfs2_resv_end(prev_resv));
+
 	prev = &prev_resv->r_node;
 
 	/* Now we do a linear search for a window, starting at 'prev_rsv' */
 	while (1) {
 		next = rb_next(prev);
 		if (next) {
-			mlog(0, "One more resv found in linear search\n");
 			next_resv = rb_entry(next,
 					     struct ocfs2_alloc_reservation,
 					     r_node);
@@ -585,7 +580,6 @@ static void __ocfs2_resv_find_window(struct ocfs2_reservation_map *resmap,
 			gap_end = next_resv->r_start - 1;
 			gap_len = gap_end - gap_start + 1;
 		} else {
-			mlog(0, "No next node\n");
 			/*
 			 * We're at the rightmost edge of the
 			 * tree. See if a reservation between this
@@ -596,6 +590,8 @@ static void __ocfs2_resv_find_window(struct ocfs2_reservation_map *resmap,
 			gap_end = resmap->m_bitmap_len - 1;
 		}
 
+		trace_ocfs2_resv_find_window_next(next ? next_resv->r_start: -1,
+					next ? ocfs2_resv_end(next_resv) : -1);
 		/*
 		 * No need to check this gap if we have already found
 		 * a larger region of free bits.
@@ -654,8 +650,9 @@ static void ocfs2_cannibalize_resv(struct ocfs2_reservation_map *resmap,
 	lru_resv = list_first_entry(&resmap->m_lru,
 				    struct ocfs2_alloc_reservation, r_lru);
 
-	mlog(0, "lru resv: start: %u len: %u end: %u\n", lru_resv->r_start,
-	     lru_resv->r_len, ocfs2_resv_end(lru_resv));
+	trace_ocfs2_cannibalize_resv_begin(lru_resv->r_start,
+					   lru_resv->r_len,
+					   ocfs2_resv_end(lru_resv));
 
 	/*
 	 * Cannibalize (some or all) of the target reservation and
@@ -684,10 +681,9 @@ static void ocfs2_cannibalize_resv(struct ocfs2_reservation_map *resmap,
 		resv->r_len = shrink;
 	}
 
-	mlog(0, "Reservation now looks like: r_start: %u r_end: %u "
-	     "r_len: %u r_last_start: %u r_last_len: %u\n",
-	     resv->r_start, ocfs2_resv_end(resv), resv->r_len,
-	     resv->r_last_start, resv->r_last_len);
+	trace_ocfs2_cannibalize_resv_end(resv->r_start, ocfs2_resv_end(resv),
+					 resv->r_len, resv->r_last_start,
+					 resv->r_last_len);
 
 	ocfs2_resv_insert(resmap, resv);
 }
@@ -748,7 +744,6 @@ int ocfs2_resmap_resv_bits(struct ocfs2_reservation_map *resmap,
 		if ((resv->r_flags & OCFS2_RESV_FLAG_TMP) || wanted < *clen)
 			wanted = *clen;
 
-		mlog(0, "empty reservation, find new window\n");
 		/*
 		 * Try to get a window here. If it works, we must fall
 		 * through and test the bitmap . This avoids some
@@ -757,6 +752,7 @@ int ocfs2_resmap_resv_bits(struct ocfs2_reservation_map *resmap,
 		 * that inode.
 		 */
 		ocfs2_resv_find_window(resmap, resv, wanted);
+		trace_ocfs2_resmap_resv_bits(resv->r_start, resv->r_len);
 	}
 
 	BUG_ON(ocfs2_resv_empty(resv));
@@ -813,10 +809,10 @@ void ocfs2_resmap_claimed_bits(struct ocfs2_reservation_map *resmap,
 
 	spin_lock(&resv_lock);
 
-	mlog(0, "claim bits: cstart: %u cend: %u clen: %u r_start: %u "
-	     "r_end: %u r_len: %u, r_last_start: %u r_last_len: %u\n",
-	     cstart, cend, clen, resv->r_start, ocfs2_resv_end(resv),
-	     resv->r_len, resv->r_last_start, resv->r_last_len);
+	trace_ocfs2_resmap_claimed_bits_begin(cstart, cend, clen, resv->r_start,
+					      ocfs2_resv_end(resv), resv->r_len,
+					      resv->r_last_start,
+					      resv->r_last_len);
 
 	BUG_ON(cstart < resv->r_start);
 	BUG_ON(cstart > ocfs2_resv_end(resv));
@@ -833,10 +829,9 @@ void ocfs2_resmap_claimed_bits(struct ocfs2_reservation_map *resmap,
 	if (!ocfs2_resv_empty(resv))
 		ocfs2_resv_mark_lru(resmap, resv);
 
-	mlog(0, "Reservation now looks like: r_start: %u r_end: %u "
-	     "r_len: %u r_last_start: %u r_last_len: %u\n",
-	     resv->r_start, ocfs2_resv_end(resv), resv->r_len,
-	     resv->r_last_start, resv->r_last_len);
+	trace_ocfs2_resmap_claimed_bits_end(resv->r_start, ocfs2_resv_end(resv),
+					    resv->r_len, resv->r_last_start,
+					    resv->r_last_len);
 
 	ocfs2_check_resmap(resmap);
 
diff --git a/fs/ocfs2/resize.c b/fs/ocfs2/resize.c
index dacd553..ec55add 100644
--- a/fs/ocfs2/resize.c
+++ b/fs/ocfs2/resize.c
@@ -27,7 +27,6 @@
 #include <linux/fs.h>
 #include <linux/types.h>
 
-#define MLOG_MASK_PREFIX ML_DISK_ALLOC
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -39,6 +38,7 @@
 #include "super.h"
 #include "sysfile.h"
 #include "uptodate.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 #include "suballoc.h"
@@ -82,7 +82,6 @@ static u16 ocfs2_calc_new_backup_super(struct inode *inode,
 		backups++;
 	}
 
-	mlog_exit_void();
 	return backups;
 }
 
@@ -103,8 +102,8 @@ static int ocfs2_update_last_group_and_inode(handle_t *handle,
 	u16 cl_bpc = le16_to_cpu(cl->cl_bpc);
 	u16 cl_cpg = le16_to_cpu(cl->cl_cpg);
 
-	mlog_entry("(new_clusters=%d, first_new_cluster = %u)\n",
-		   new_clusters, first_new_cluster);
+	trace_ocfs2_update_last_group_and_inode(new_clusters,
+						first_new_cluster);
 
 	ret = ocfs2_journal_access_gd(handle, INODE_CACHE(bm_inode),
 				      group_bh, OCFS2_JOURNAL_ACCESS_WRITE);
@@ -176,7 +175,8 @@ out_rollback:
 		le16_add_cpu(&group->bg_free_bits_count, -1 * num_bits);
 	}
 out:
-	mlog_exit(ret);
+	if (ret)
+		mlog_errno(ret);
 	return ret;
 }
 
@@ -281,8 +281,6 @@ int ocfs2_group_extend(struct inode * inode, int new_clusters)
 	u32 first_new_cluster;
 	u64 lgd_blkno;
 
-	mlog_entry_void();
-
 	if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
 		return -EROFS;
 
@@ -342,7 +340,8 @@ int ocfs2_group_extend(struct inode * inode, int new_clusters)
 		goto out_unlock;
 	}
 
-	mlog(0, "extend the last group at %llu, new clusters = %d\n",
+
+	trace_ocfs2_group_extend(
 	     (unsigned long long)le64_to_cpu(group->bg_blkno), new_clusters);
 
 	handle = ocfs2_start_trans(osb, OCFS2_GROUP_EXTEND_CREDITS);
@@ -377,7 +376,6 @@ out_mutex:
 	iput(main_bm_inode);
 
 out:
-	mlog_exit_void();
 	return ret;
 }
 
@@ -472,8 +470,6 @@ int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
 	struct ocfs2_chain_rec *cr;
 	u16 cl_bpc;
 
-	mlog_entry_void();
-
 	if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
 		return -EROFS;
 
@@ -520,8 +516,8 @@ int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
 		goto out_unlock;
 	}
 
-	mlog(0, "Add a new group  %llu in chain = %u, length = %u\n",
-	     (unsigned long long)input->group, input->chain, input->clusters);
+	trace_ocfs2_group_add((unsigned long long)input->group,
+			       input->chain, input->clusters, input->frees);
 
 	handle = ocfs2_start_trans(osb, OCFS2_GROUP_ADD_CREDITS);
 	if (IS_ERR(handle)) {
@@ -589,6 +585,5 @@ out_mutex:
 	iput(main_bm_inode);
 
 out:
-	mlog_exit_void();
 	return ret;
 }
diff --git a/fs/ocfs2/slot_map.c b/fs/ocfs2/slot_map.c
index ab4e017..26fc001 100644
--- a/fs/ocfs2/slot_map.c
+++ b/fs/ocfs2/slot_map.c
@@ -27,7 +27,6 @@
 #include <linux/slab.h>
 #include <linux/highmem.h>
 
-#define MLOG_MASK_PREFIX ML_SUPER
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -39,6 +38,7 @@
 #include "slot_map.h"
 #include "super.h"
 #include "sysfile.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -142,8 +142,7 @@ int ocfs2_refresh_slot_info(struct ocfs2_super *osb)
 	BUG_ON(si->si_blocks == 0);
 	BUG_ON(si->si_bh == NULL);
 
-	mlog(0, "Refreshing slot map, reading %u block(s)\n",
-	     si->si_blocks);
+	trace_ocfs2_refresh_slot_info(si->si_blocks);
 
 	/*
 	 * We pass -1 as blocknr because we expect all of si->si_bh to
@@ -381,8 +380,7 @@ static int ocfs2_map_slot_buffers(struct ocfs2_super *osb,
 	/* The size checks above should ensure this */
 	BUG_ON((osb->max_slots / si->si_slots_per_block) > blocks);
 
-	mlog(0, "Slot map needs %u buffers for %llu bytes\n",
-	     si->si_blocks, bytes);
+	trace_ocfs2_map_slot_buffers(bytes, si->si_blocks);
 
 	si->si_bh = kzalloc(sizeof(struct buffer_head *) * si->si_blocks,
 			    GFP_KERNEL);
@@ -400,8 +398,7 @@ static int ocfs2_map_slot_buffers(struct ocfs2_super *osb,
 			goto bail;
 		}
 
-		mlog(0, "Reading slot map block %u at %llu\n", i,
-		     (unsigned long long)blkno);
+		trace_ocfs2_map_slot_buffers_block((unsigned long long)blkno, i);
 
 		bh = NULL;  /* Acquire a fresh bh */
 		status = ocfs2_read_blocks(INODE_CACHE(si->si_inode), blkno,
@@ -475,8 +472,6 @@ int ocfs2_find_slot(struct ocfs2_super *osb)
 	int slot;
 	struct ocfs2_slot_info *si;
 
-	mlog_entry_void();
-
 	si = osb->slot_info;
 
 	spin_lock(&osb->osb_lock);
@@ -505,14 +500,13 @@ int ocfs2_find_slot(struct ocfs2_super *osb)
 	osb->slot_num = slot;
 	spin_unlock(&osb->osb_lock);
 
-	mlog(0, "taking node slot %d\n", osb->slot_num);
+	trace_ocfs2_find_slot(osb->slot_num);
 
 	status = ocfs2_update_disk_slot(osb, si, osb->slot_num);
 	if (status < 0)
 		mlog_errno(status);
 
 bail:
-	mlog_exit(status);
 	return status;
 }
 
diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index 71998d4..ab6e206 100644
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -29,7 +29,6 @@
 #include <linux/slab.h>
 #include <linux/highmem.h>
 
-#define MLOG_MASK_PREFIX ML_DISK_ALLOC
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -44,6 +43,7 @@
 #include "super.h"
 #include "sysfile.h"
 #include "uptodate.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -308,8 +308,8 @@ static int ocfs2_validate_group_descriptor(struct super_block *sb,
 	int rc;
 	struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data;
 
-	mlog(0, "Validating group descriptor %llu\n",
-	     (unsigned long long)bh->b_blocknr);
+	trace_ocfs2_validate_group_descriptor(
+					(unsigned long long)bh->b_blocknr);
 
 	BUG_ON(!buffer_uptodate(bh));
 
@@ -389,8 +389,6 @@ static int ocfs2_block_group_fill(handle_t *handle,
 	struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data;
 	struct super_block * sb = alloc_inode->i_sb;
 
-	mlog_entry_void();
-
 	if (((unsigned long long) bg_bh->b_blocknr) != group_blkno) {
 		ocfs2_error(alloc_inode->i_sb, "group block (%llu) != "
 			    "b_blocknr (%llu)",
@@ -436,7 +434,8 @@ static int ocfs2_block_group_fill(handle_t *handle,
 	 * allocation time. */
 
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -477,8 +476,8 @@ ocfs2_block_group_alloc_contig(struct ocfs2_super *osb, handle_t *handle,
 
 	/* setup the group */
 	bg_blkno = ocfs2_clusters_to_blocks(osb->sb, bit_off);
-	mlog(0, "new descriptor, record %u, at block %llu\n",
-	     alloc_rec, (unsigned long long)bg_blkno);
+	trace_ocfs2_block_group_alloc_contig(
+	     (unsigned long long)bg_blkno, alloc_rec);
 
 	bg_bh = sb_getblk(osb->sb, bg_blkno);
 	if (!bg_bh) {
@@ -657,8 +656,8 @@ ocfs2_block_group_alloc_discontig(handle_t *handle,
 
 	/* setup the group */
 	bg_blkno = ocfs2_clusters_to_blocks(osb->sb, bit_off);
-	mlog(0, "new descriptor, record %u, at block %llu\n",
-	     alloc_rec, (unsigned long long)bg_blkno);
+	trace_ocfs2_block_group_alloc_discontig(
+				(unsigned long long)bg_blkno, alloc_rec);
 
 	bg_bh = sb_getblk(osb->sb, bg_blkno);
 	if (!bg_bh) {
@@ -707,8 +706,6 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
 
 	BUG_ON(ocfs2_is_cluster_bitmap(alloc_inode));
 
-	mlog_entry_void();
-
 	cl = &fe->id2.i_chain;
 	status = ocfs2_reserve_clusters_with_limit(osb,
 						   le16_to_cpu(cl->cl_cpg),
@@ -730,8 +727,8 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
 	}
 
 	if (last_alloc_group && *last_alloc_group != 0) {
-		mlog(0, "use old allocation group %llu for block group alloc\n",
-		     (unsigned long long)*last_alloc_group);
+		trace_ocfs2_block_group_alloc(
+				(unsigned long long)*last_alloc_group);
 		ac->ac_last_group = *last_alloc_group;
 	}
 
@@ -796,7 +793,8 @@ bail:
 
 	brelse(bg_bh);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -814,8 +812,6 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
 	struct ocfs2_dinode *fe;
 	u32 free_bits;
 
-	mlog_entry_void();
-
 	alloc_inode = ocfs2_get_system_file_inode(osb, type, slot);
 	if (!alloc_inode) {
 		mlog_errno(-EINVAL);
@@ -855,16 +851,15 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
 	if (bits_wanted > free_bits) {
 		/* cluster bitmap never grows */
 		if (ocfs2_is_cluster_bitmap(alloc_inode)) {
-			mlog(0, "Disk Full: wanted=%u, free_bits=%u\n",
-			     bits_wanted, free_bits);
+			trace_ocfs2_reserve_suballoc_bits_nospc(bits_wanted,
+								free_bits);
 			status = -ENOSPC;
 			goto bail;
 		}
 
 		if (!(flags & ALLOC_NEW_GROUP)) {
-			mlog(0, "Alloc File %u Full: wanted=%u, free_bits=%u, "
-			     "and we don't alloc a new group for it.\n",
-			     slot, bits_wanted, free_bits);
+			trace_ocfs2_reserve_suballoc_bits_no_new_group(
+						slot, bits_wanted, free_bits);
 			status = -ENOSPC;
 			goto bail;
 		}
@@ -890,7 +885,8 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
 bail:
 	brelse(bh);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1052,7 +1048,8 @@ bail:
 		*ac = NULL;
 	}
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1119,8 +1116,8 @@ int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
 		spin_lock(&osb->osb_lock);
 		osb->osb_inode_alloc_group = alloc_group;
 		spin_unlock(&osb->osb_lock);
-		mlog(0, "after reservation, new allocation group is "
-		     "%llu\n", (unsigned long long)alloc_group);
+		trace_ocfs2_reserve_new_inode_new_group(
+			(unsigned long long)alloc_group);
 
 		/*
 		 * Some inodes must be freed by us, so try to allocate
@@ -1152,7 +1149,8 @@ bail:
 		*ac = NULL;
 	}
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1189,8 +1187,6 @@ static int ocfs2_reserve_clusters_with_limit(struct ocfs2_super *osb,
 {
 	int status;
 
-	mlog_entry_void();
-
 	*ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
 	if (!(*ac)) {
 		status = -ENOMEM;
@@ -1229,7 +1225,8 @@ bail:
 		*ac = NULL;
 	}
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1357,15 +1354,12 @@ static inline int ocfs2_block_group_set_bits(handle_t *handle,
 	void *bitmap = bg->bg_bitmap;
 	int journal_type = OCFS2_JOURNAL_ACCESS_WRITE;
 
-	mlog_entry_void();
-
 	/* All callers get the descriptor via
 	 * ocfs2_read_group_descriptor().  Any corruption is a code bug. */
 	BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg));
 	BUG_ON(le16_to_cpu(bg->bg_free_bits_count) < num_bits);
 
-	mlog(0, "block_group_set_bits: off = %u, num = %u\n", bit_off,
-	     num_bits);
+	trace_ocfs2_block_group_set_bits(bit_off, num_bits);
 
 	if (ocfs2_is_cluster_bitmap(alloc_inode))
 		journal_type = OCFS2_JOURNAL_ACCESS_UNDO;
@@ -1394,7 +1388,8 @@ static inline int ocfs2_block_group_set_bits(handle_t *handle,
 	ocfs2_journal_dirty(handle, group_bh);
 
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1437,10 +1432,10 @@ static int ocfs2_relink_block_group(handle_t *handle,
 	BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg));
 	BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(prev_bg));
 
-	mlog(0, "Suballoc %llu, chain %u, move group %llu to top, prev = %llu\n",
-	     (unsigned long long)le64_to_cpu(fe->i_blkno), chain,
-	     (unsigned long long)le64_to_cpu(bg->bg_blkno),
-	     (unsigned long long)le64_to_cpu(prev_bg->bg_blkno));
+	trace_ocfs2_relink_block_group(
+		(unsigned long long)le64_to_cpu(fe->i_blkno), chain,
+		(unsigned long long)le64_to_cpu(bg->bg_blkno),
+		(unsigned long long)le64_to_cpu(prev_bg->bg_blkno));
 
 	fe_ptr = le64_to_cpu(fe->id2.i_chain.cl_recs[chain].c_blkno);
 	bg_ptr = le64_to_cpu(bg->bg_next_group);
@@ -1484,7 +1479,8 @@ out_rollback:
 		prev_bg->bg_next_group = cpu_to_le64(prev_bg_ptr);
 	}
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1525,10 +1521,10 @@ static int ocfs2_cluster_group_search(struct inode *inode,
 		if ((gd_cluster_off + max_bits) >
 		    OCFS2_I(inode)->ip_clusters) {
 			max_bits = OCFS2_I(inode)->ip_clusters - gd_cluster_off;
-			mlog(0, "Desc %llu, bg_bits %u, clusters %u, use %u\n",
-			     (unsigned long long)le64_to_cpu(gd->bg_blkno),
-			     le16_to_cpu(gd->bg_bits),
-			     OCFS2_I(inode)->ip_clusters, max_bits);
+			trace_ocfs2_cluster_group_search_wrong_max_bits(
+				(unsigned long long)le64_to_cpu(gd->bg_blkno),
+				le16_to_cpu(gd->bg_bits),
+				OCFS2_I(inode)->ip_clusters, max_bits);
 		}
 
 		ret = ocfs2_block_group_find_clear_bits(OCFS2_SB(inode->i_sb),
@@ -1542,9 +1538,9 @@ static int ocfs2_cluster_group_search(struct inode *inode,
 							  gd_cluster_off +
 							  res->sr_bit_offset +
 							  res->sr_bits);
-			mlog(0, "Checking %llu against %llu\n",
-			     (unsigned long long)blkoff,
-			     (unsigned long long)max_block);
+			trace_ocfs2_cluster_group_search_max_block(
+				(unsigned long long)blkoff,
+				(unsigned long long)max_block);
 			if (blkoff > max_block)
 				return -ENOSPC;
 		}
@@ -1588,9 +1584,9 @@ static int ocfs2_block_group_search(struct inode *inode,
 		if (!ret && max_block) {
 			blkoff = le64_to_cpu(bg->bg_blkno) +
 				res->sr_bit_offset + res->sr_bits;
-			mlog(0, "Checking %llu against %llu\n",
-			     (unsigned long long)blkoff,
-			     (unsigned long long)max_block);
+			trace_ocfs2_block_group_search_max_block(
+				(unsigned long long)blkoff,
+				(unsigned long long)max_block);
 			if (blkoff > max_block)
 				ret = -ENOSPC;
 		}
@@ -1756,9 +1752,9 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
 	struct ocfs2_group_desc *bg;
 
 	chain = ac->ac_chain;
-	mlog(0, "trying to alloc %u bits from chain %u, inode %llu\n",
-	     bits_wanted, chain,
-	     (unsigned long long)OCFS2_I(alloc_inode)->ip_blkno);
+	trace_ocfs2_search_chain_begin(
+		(unsigned long long)OCFS2_I(alloc_inode)->ip_blkno,
+		bits_wanted, chain);
 
 	status = ocfs2_read_group_descriptor(alloc_inode, fe,
 					     le64_to_cpu(cl->cl_recs[chain].c_blkno),
@@ -1799,8 +1795,8 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
 		goto bail;
 	}
 
-	mlog(0, "alloc succeeds: we give %u bits from block group %llu\n",
-	     res->sr_bits, (unsigned long long)le64_to_cpu(bg->bg_blkno));
+	trace_ocfs2_search_chain_succ(
+		(unsigned long long)le64_to_cpu(bg->bg_blkno), res->sr_bits);
 
 	res->sr_bg_blkno = le64_to_cpu(bg->bg_blkno);
 
@@ -1861,8 +1857,9 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
 		goto bail;
 	}
 
-	mlog(0, "Allocated %u bits from suballocator %llu\n", res->sr_bits,
-	     (unsigned long long)le64_to_cpu(fe->i_blkno));
+	trace_ocfs2_search_chain_end(
+			(unsigned long long)le64_to_cpu(fe->i_blkno),
+			res->sr_bits);
 
 out_loc_only:
 	*bits_left = le16_to_cpu(bg->bg_free_bits_count);
@@ -1870,7 +1867,8 @@ bail:
 	brelse(group_bh);
 	brelse(prev_group_bh);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1888,8 +1886,6 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_alloc_context *ac,
 	struct ocfs2_chain_list *cl;
 	struct ocfs2_dinode *fe;
 
-	mlog_entry_void();
-
 	BUG_ON(ac->ac_bits_given >= ac->ac_bits_wanted);
 	BUG_ON(bits_wanted > (ac->ac_bits_wanted - ac->ac_bits_given));
 	BUG_ON(!ac->ac_bh);
@@ -1945,8 +1941,7 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_alloc_context *ac,
 		goto bail;
 	}
 
-	mlog(0, "Search of victim chain %u came up with nothing, "
-	     "trying all chains now.\n", victim);
+	trace_ocfs2_claim_suballoc_bits(victim);
 
 	/* If we didn't pick a good victim, then just default to
 	 * searching each chain in order. Don't allow chain relinking
@@ -1984,7 +1979,8 @@ set_hint:
 	}
 
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2021,7 +2017,8 @@ int ocfs2_claim_metadata(handle_t *handle,
 	*num_bits = res.sr_bits;
 	status = 0;
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2172,8 +2169,8 @@ int ocfs2_claim_new_inode_at_loc(handle_t *handle,
 		goto out;
 	}
 
-	mlog(0, "Allocated %u bits from suballocator %llu\n", res->sr_bits,
-	     (unsigned long long)di_blkno);
+	trace_ocfs2_claim_new_inode_at_loc((unsigned long long)di_blkno,
+					   res->sr_bits);
 
 	atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
 
@@ -2201,8 +2198,6 @@ int ocfs2_claim_new_inode(handle_t *handle,
 	int status;
 	struct ocfs2_suballoc_result res;
 
-	mlog_entry_void();
-
 	BUG_ON(!ac);
 	BUG_ON(ac->ac_bits_given != 0);
 	BUG_ON(ac->ac_bits_wanted != 1);
@@ -2230,7 +2225,8 @@ int ocfs2_claim_new_inode(handle_t *handle,
 	ocfs2_save_inode_ac_group(dir, ac);
 	status = 0;
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2307,8 +2303,6 @@ int __ocfs2_claim_clusters(handle_t *handle,
 	struct ocfs2_suballoc_result res = { .sr_blkno = 0, };
 	struct ocfs2_super *osb = OCFS2_SB(ac->ac_inode->i_sb);
 
-	mlog_entry_void();
-
 	BUG_ON(ac->ac_bits_given >= ac->ac_bits_wanted);
 
 	BUG_ON(ac->ac_which != OCFS2_AC_USE_LOCAL
@@ -2363,7 +2357,8 @@ int __ocfs2_claim_clusters(handle_t *handle,
 	ac->ac_bits_given += *num_clusters;
 
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2392,13 +2387,11 @@ static int ocfs2_block_group_clear_bits(handle_t *handle,
 	unsigned int tmp;
 	struct ocfs2_group_desc *undo_bg = NULL;
 
-	mlog_entry_void();
-
 	/* The caller got this descriptor from
 	 * ocfs2_read_group_descriptor().  Any corruption is a code bug. */
 	BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg));
 
-	mlog(0, "off = %u, num = %u\n", bit_off, num_bits);
+	trace_ocfs2_block_group_clear_bits(bit_off, num_bits);
 
 	BUG_ON(undo_fn && !ocfs2_is_cluster_bitmap(alloc_inode));
 	status = ocfs2_journal_access_gd(handle, INODE_CACHE(alloc_inode),
@@ -2463,8 +2456,6 @@ static int _ocfs2_free_suballoc_bits(handle_t *handle,
 	struct buffer_head *group_bh = NULL;
 	struct ocfs2_group_desc *group;
 
-	mlog_entry_void();
-
 	/* The alloc_bh comes from ocfs2_free_dinode() or
 	 * ocfs2_free_clusters().  The callers have all locked the
 	 * allocator and gotten alloc_bh from the lock call.  This
@@ -2473,9 +2464,10 @@ static int _ocfs2_free_suballoc_bits(handle_t *handle,
 	BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
 	BUG_ON((count + start_bit) > ocfs2_bits_per_group(cl));
 
-	mlog(0, "%llu: freeing %u bits from group %llu, starting at %u\n",
-	     (unsigned long long)OCFS2_I(alloc_inode)->ip_blkno, count,
-	     (unsigned long long)bg_blkno, start_bit);
+	trace_ocfs2_free_suballoc_bits(
+		(unsigned long long)OCFS2_I(alloc_inode)->ip_blkno,
+		(unsigned long long)bg_blkno,
+		start_bit, count);
 
 	status = ocfs2_read_group_descriptor(alloc_inode, fe, bg_blkno,
 					     &group_bh);
@@ -2511,7 +2503,8 @@ static int _ocfs2_free_suballoc_bits(handle_t *handle,
 bail:
 	brelse(group_bh);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2556,11 +2549,8 @@ static int _ocfs2_free_clusters(handle_t *handle,
 
 	/* You can't ever have a contiguous set of clusters
 	 * bigger than a block group bitmap so we never have to worry
-	 * about looping on them. */
-
-	mlog_entry_void();
-
-	/* This is expensive. We can safely remove once this stuff has
+	 * about looping on them.
+	 * This is expensive. We can safely remove once this stuff has
 	 * gotten tested really well. */
 	BUG_ON(start_blk != ocfs2_clusters_to_blocks(bitmap_inode->i_sb, ocfs2_blocks_to_clusters(bitmap_inode->i_sb, start_blk)));
 
@@ -2569,10 +2559,9 @@ static int _ocfs2_free_clusters(handle_t *handle,
 	ocfs2_block_to_cluster_group(bitmap_inode, start_blk, &bg_blkno,
 				     &bg_start_bit);
 
-	mlog(0, "want to free %u clusters starting at block %llu\n",
-	     num_clusters, (unsigned long long)start_blk);
-	mlog(0, "bg_blkno = %llu, bg_start_bit = %u\n",
-	     (unsigned long long)bg_blkno, bg_start_bit);
+	trace_ocfs2_free_clusters((unsigned long long)bg_blkno,
+			(unsigned long long)start_blk,
+			bg_start_bit, num_clusters);
 
 	status = _ocfs2_free_suballoc_bits(handle, bitmap_inode, bitmap_bh,
 					   bg_start_bit, bg_blkno,
@@ -2586,7 +2575,8 @@ static int _ocfs2_free_clusters(handle_t *handle,
 					 num_clusters);
 
 out:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2756,7 +2746,7 @@ static int ocfs2_get_suballoc_slot_bit(struct ocfs2_super *osb, u64 blkno,
 	struct buffer_head *inode_bh = NULL;
 	struct ocfs2_dinode *inode_fe;
 
-	mlog_entry("blkno: %llu\n", (unsigned long long)blkno);
+	trace_ocfs2_get_suballoc_slot_bit((unsigned long long)blkno);
 
 	/* dirty read disk */
 	status = ocfs2_read_blocks_sync(osb, blkno, 1, &inode_bh);
@@ -2793,7 +2783,8 @@ static int ocfs2_get_suballoc_slot_bit(struct ocfs2_super *osb, u64 blkno,
 bail:
 	brelse(inode_bh);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2816,8 +2807,8 @@ static int ocfs2_test_suballoc_bit(struct ocfs2_super *osb,
 	u64 bg_blkno;
 	int status;
 
-	mlog_entry("blkno: %llu bit: %u\n", (unsigned long long)blkno,
-		   (unsigned int)bit);
+	trace_ocfs2_test_suballoc_bit((unsigned long long)blkno,
+				      (unsigned int)bit);
 
 	alloc_di = (struct ocfs2_dinode *)alloc_bh->b_data;
 	if ((bit + 1) > ocfs2_bits_per_group(&alloc_di->id2.i_chain)) {
@@ -2844,7 +2835,8 @@ static int ocfs2_test_suballoc_bit(struct ocfs2_super *osb,
 bail:
 	brelse(group_bh);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2869,7 +2861,7 @@ int ocfs2_test_inode_bit(struct ocfs2_super *osb, u64 blkno, int *res)
 	struct inode *inode_alloc_inode;
 	struct buffer_head *alloc_bh = NULL;
 
-	mlog_entry("blkno: %llu", (unsigned long long)blkno);
+	trace_ocfs2_test_inode_bit((unsigned long long)blkno);
 
 	status = ocfs2_get_suballoc_slot_bit(osb, blkno, &suballoc_slot,
 					     &group_blkno, &suballoc_bit);
@@ -2910,6 +2902,7 @@ int ocfs2_test_inode_bit(struct ocfs2_super *osb, u64 blkno, int *res)
 	iput(inode_alloc_inode);
 	brelse(alloc_bh);
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 236ed1b..69fa11b 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -42,7 +42,9 @@
 #include <linux/seq_file.h>
 #include <linux/quotaops.h>
 
-#define MLOG_MASK_PREFIX ML_SUPER
+#define CREATE_TRACE_POINTS
+#include "ocfs2_trace.h"
+
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -441,8 +443,6 @@ static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
 	int status = 0;
 	int i;
 
-	mlog_entry_void();
-
 	new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
 	if (IS_ERR(new)) {
 		status = PTR_ERR(new);
@@ -478,7 +478,8 @@ static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
 	}
 
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -488,8 +489,6 @@ static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
 	int status = 0;
 	int i;
 
-	mlog_entry_void();
-
 	for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
 	     i < NUM_SYSTEM_INODES;
 	     i++) {
@@ -508,7 +507,8 @@ static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
 	}
 
 bail:
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -517,8 +517,6 @@ static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
 	int i;
 	struct inode *inode;
 
-	mlog_entry_void();
-
 	for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) {
 		inode = osb->global_system_inodes[i];
 		if (inode) {
@@ -540,7 +538,7 @@ static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
 	}
 
 	if (!osb->local_system_inodes)
-		goto out;
+		return;
 
 	for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) {
 		if (osb->local_system_inodes[i]) {
@@ -551,9 +549,6 @@ static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
 
 	kfree(osb->local_system_inodes);
 	osb->local_system_inodes = NULL;
-
-out:
-	mlog_exit(0);
 }
 
 /* We're allocating fs objects, use GFP_NOFS */
@@ -684,12 +679,9 @@ static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
 		}
 
 		if (*flags & MS_RDONLY) {
-			mlog(0, "Going to ro mode.\n");
 			sb->s_flags |= MS_RDONLY;
 			osb->osb_flags |= OCFS2_OSB_SOFT_RO;
 		} else {
-			mlog(0, "Making ro filesystem writeable.\n");
-
 			if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
 				mlog(ML_ERROR, "Cannot remount RDWR "
 				     "filesystem due to previous errors.\n");
@@ -707,6 +699,7 @@ static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
 			sb->s_flags &= ~MS_RDONLY;
 			osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
 		}
+		trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags);
 unlock_osb:
 		spin_unlock(&osb->osb_lock);
 		/* Enable quota accounting after remounting RW */
@@ -1032,7 +1025,7 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
 	char nodestr[8];
 	struct ocfs2_blockcheck_stats stats;
 
-	mlog_entry("%p, %p, %i", sb, data, silent);
+	trace_ocfs2_fill_super(sb, data, silent);
 
 	if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
 		status = -EINVAL;
@@ -1208,7 +1201,6 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
 			mlog_errno(status);
 			atomic_set(&osb->vol_state, VOLUME_DISABLED);
 			wake_up(&osb->osb_mount_event);
-			mlog_exit(status);
 			return status;
 		}
 	}
@@ -1222,7 +1214,6 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
 	/* Start this when the mount is almost sure of being successful */
 	ocfs2_orphan_scan_start(osb);
 
-	mlog_exit(status);
 	return status;
 
 read_super_error:
@@ -1237,7 +1228,8 @@ read_super_error:
 		ocfs2_dismount_volume(sb, 1);
 	}
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -1320,8 +1312,7 @@ static int ocfs2_parse_options(struct super_block *sb,
 	char *p;
 	u32 tmp;
 
-	mlog_entry("remount: %d, options: \"%s\"\n", is_remount,
-		   options ? options : "(none)");
+	trace_ocfs2_parse_options(is_remount, options ? options : "(none)");
 
 	mopt->commit_interval = 0;
 	mopt->mount_opt = OCFS2_MOUNT_NOINTR;
@@ -1538,7 +1529,6 @@ static int ocfs2_parse_options(struct super_block *sb,
 	status = 1;
 
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -1629,8 +1619,6 @@ static int __init ocfs2_init(void)
 {
 	int status;
 
-	mlog_entry_void();
-
 	ocfs2_print_version();
 
 	status = init_ocfs2_uptodate_cache();
@@ -1664,10 +1652,9 @@ leave:
 	if (status < 0) {
 		ocfs2_free_mem_caches();
 		exit_ocfs2_uptodate_cache();
+		mlog_errno(status);
 	}
 
-	mlog_exit(status);
-
 	if (status >= 0) {
 		return register_filesystem(&ocfs2_fs_type);
 	} else
@@ -1676,8 +1663,6 @@ leave:
 
 static void __exit ocfs2_exit(void)
 {
-	mlog_entry_void();
-
 	if (ocfs2_wq) {
 		flush_workqueue(ocfs2_wq);
 		destroy_workqueue(ocfs2_wq);
@@ -1692,18 +1677,14 @@ static void __exit ocfs2_exit(void)
 	unregister_filesystem(&ocfs2_fs_type);
 
 	exit_ocfs2_uptodate_cache();
-
-	mlog_exit_void();
 }
 
 static void ocfs2_put_super(struct super_block *sb)
 {
-	mlog_entry("(0x%p)\n", sb);
+	trace_ocfs2_put_super(sb);
 
 	ocfs2_sync_blockdev(sb);
 	ocfs2_dismount_volume(sb, 0);
-
-	mlog_exit_void();
 }
 
 static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
@@ -1715,7 +1696,7 @@ static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
 	struct buffer_head *bh = NULL;
 	struct inode *inode = NULL;
 
-	mlog_entry("(%p, %p)\n", dentry->d_sb, buf);
+	trace_ocfs2_statfs(dentry->d_sb, buf);
 
 	osb = OCFS2_SB(dentry->d_sb);
 
@@ -1762,7 +1743,8 @@ bail:
 	if (inode)
 		iput(inode);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 
 	return status;
 }
@@ -1882,8 +1864,6 @@ static int ocfs2_mount_volume(struct super_block *sb)
 	int unlock_super = 0;
 	struct ocfs2_super *osb = OCFS2_SB(sb);
 
-	mlog_entry_void();
-
 	if (ocfs2_is_hard_readonly(osb))
 		goto leave;
 
@@ -1928,7 +1908,6 @@ leave:
 	if (unlock_super)
 		ocfs2_super_unlock(osb, 1);
 
-	mlog_exit(status);
 	return status;
 }
 
@@ -1938,7 +1917,7 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
 	struct ocfs2_super *osb = NULL;
 	char nodestr[8];
 
-	mlog_entry("(0x%p)\n", sb);
+	trace_ocfs2_dismount_volume(sb);
 
 	BUG_ON(!sb);
 	osb = OCFS2_SB(sb);
@@ -2090,8 +2069,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
 	struct ocfs2_super *osb;
 	u64 total_blocks;
 
-	mlog_entry_void();
-
 	osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
 	if (!osb) {
 		status = -ENOMEM;
@@ -2155,7 +2132,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
 		status = -EINVAL;
 		goto bail;
 	}
-	mlog(0, "max_slots for this device: %u\n", osb->max_slots);
 
 	ocfs2_orphan_scan_init(osb);
 
@@ -2294,7 +2270,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
 	osb->s_clustersize_bits =
 		le32_to_cpu(di->id2.i_super.s_clustersize_bits);
 	osb->s_clustersize = 1 << osb->s_clustersize_bits;
-	mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits);
 
 	if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
 	    osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
@@ -2333,11 +2308,10 @@ static int ocfs2_initialize_super(struct super_block *sb,
 		le64_to_cpu(di->id2.i_super.s_first_cluster_group);
 	osb->fs_generation = le32_to_cpu(di->i_fs_generation);
 	osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
-	mlog(0, "vol_label: %s\n", osb->vol_label);
-	mlog(0, "uuid: %s\n", osb->uuid_str);
-	mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n",
-	     (unsigned long long)osb->root_blkno,
-	     (unsigned long long)osb->system_dir_blkno);
+	trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str,
+				     (unsigned long long)osb->root_blkno,
+				     (unsigned long long)osb->system_dir_blkno,
+				     osb->s_clustersize_bits);
 
 	osb->osb_dlm_debug = ocfs2_new_dlm_debug();
 	if (!osb->osb_dlm_debug) {
@@ -2380,7 +2354,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
 	}
 
 bail:
-	mlog_exit(status);
 	return status;
 }
 
@@ -2396,8 +2369,6 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
 {
 	int status = -EAGAIN;
 
-	mlog_entry_void();
-
 	if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
 		   strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
 		/* We have to do a raw check of the feature here */
@@ -2452,7 +2423,8 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
 	}
 
 out:
-	mlog_exit(status);
+	if (status && status != -EAGAIN)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2465,8 +2437,6 @@ static int ocfs2_check_volume(struct ocfs2_super *osb)
 						  * recover
 						  * ourselves. */
 
-	mlog_entry_void();
-
 	/* Init our journal object. */
 	status = ocfs2_journal_init(osb->journal, &dirty);
 	if (status < 0) {
@@ -2516,8 +2486,6 @@ static int ocfs2_check_volume(struct ocfs2_super *osb)
 		 * ourselves as mounted. */
 	}
 
-	mlog(0, "Journal loaded.\n");
-
 	status = ocfs2_load_local_alloc(osb);
 	if (status < 0) {
 		mlog_errno(status);
@@ -2549,7 +2517,8 @@ finally:
 	if (local_alloc)
 		kfree(local_alloc);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return status;
 }
 
@@ -2561,8 +2530,6 @@ finally:
  */
 static void ocfs2_delete_osb(struct ocfs2_super *osb)
 {
-	mlog_entry_void();
-
 	/* This function assumes that the caller has the main osb resource */
 
 	ocfs2_free_slot_info(osb);
@@ -2580,8 +2547,6 @@ static void ocfs2_delete_osb(struct ocfs2_super *osb)
 	kfree(osb->uuid_str);
 	ocfs2_put_dlm_debug(osb->osb_dlm_debug);
 	memset(osb, 0, sizeof(struct ocfs2_super));
-
-	mlog_exit_void();
 }
 
 /* Put OCFS2 into a readonly state, or (if the user specifies it),
diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c
index 9975457..5d22872 100644
--- a/fs/ocfs2/symlink.c
+++ b/fs/ocfs2/symlink.c
@@ -40,7 +40,6 @@
 #include <linux/pagemap.h>
 #include <linux/namei.h>
 
-#define MLOG_MASK_PREFIX ML_NAMEI
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -62,8 +61,6 @@ static char *ocfs2_fast_symlink_getlink(struct inode *inode,
 	char *link = NULL;
 	struct ocfs2_dinode *fe;
 
-	mlog_entry_void();
-
 	status = ocfs2_read_inode_block(inode, bh);
 	if (status < 0) {
 		mlog_errno(status);
@@ -74,7 +71,6 @@ static char *ocfs2_fast_symlink_getlink(struct inode *inode,
 	fe = (struct ocfs2_dinode *) (*bh)->b_data;
 	link = (char *) fe->id2.i_symlink;
 bail:
-	mlog_exit(status);
 
 	return link;
 }
@@ -88,8 +84,6 @@ static int ocfs2_readlink(struct dentry *dentry,
 	struct buffer_head *bh = NULL;
 	struct inode *inode = dentry->d_inode;
 
-	mlog_entry_void();
-
 	link = ocfs2_fast_symlink_getlink(inode, &bh);
 	if (IS_ERR(link)) {
 		ret = PTR_ERR(link);
@@ -104,7 +98,8 @@ static int ocfs2_readlink(struct dentry *dentry,
 
 	brelse(bh);
 out:
-	mlog_exit(ret);
+	if (ret < 0)
+		mlog_errno(ret);
 	return ret;
 }
 
@@ -117,8 +112,6 @@ static void *ocfs2_fast_follow_link(struct dentry *dentry,
 	struct inode *inode = dentry->d_inode;
 	struct buffer_head *bh = NULL;
 
-	mlog_entry_void();
-
 	BUG_ON(!ocfs2_inode_is_fast_symlink(inode));
 	target = ocfs2_fast_symlink_getlink(inode, &bh);
 	if (IS_ERR(target)) {
@@ -142,7 +135,8 @@ bail:
 	nd_set_link(nd, status ? ERR_PTR(status) : link);
 	brelse(bh);
 
-	mlog_exit(status);
+	if (status)
+		mlog_errno(status);
 	return NULL;
 }
 
diff --git a/fs/ocfs2/sysfile.c b/fs/ocfs2/sysfile.c
index 902efb2..3d635f4 100644
--- a/fs/ocfs2/sysfile.c
+++ b/fs/ocfs2/sysfile.c
@@ -27,7 +27,6 @@
 #include <linux/types.h>
 #include <linux/highmem.h>
 
-#define MLOG_MASK_PREFIX ML_INODE
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
diff --git a/fs/ocfs2/uptodate.c b/fs/ocfs2/uptodate.c
index a0a120e..52eaf33 100644
--- a/fs/ocfs2/uptodate.c
+++ b/fs/ocfs2/uptodate.c
@@ -54,14 +54,13 @@
 #include <linux/buffer_head.h>
 #include <linux/rbtree.h>
 
-#define MLOG_MASK_PREFIX ML_UPTODATE
-
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
 
 #include "inode.h"
 #include "uptodate.h"
+#include "ocfs2_trace.h"
 
 struct ocfs2_meta_cache_item {
 	struct rb_node	c_node;
@@ -152,8 +151,8 @@ static unsigned int ocfs2_purge_copied_metadata_tree(struct rb_root *root)
 	while ((node = rb_last(root)) != NULL) {
 		item = rb_entry(node, struct ocfs2_meta_cache_item, c_node);
 
-		mlog(0, "Purge item %llu\n",
-		     (unsigned long long) item->c_block);
+		trace_ocfs2_purge_copied_metadata_tree(
+					(unsigned long long) item->c_block);
 
 		rb_erase(&item->c_node, root);
 		kmem_cache_free(ocfs2_uptodate_cachep, item);
@@ -180,9 +179,9 @@ void ocfs2_metadata_cache_purge(struct ocfs2_caching_info *ci)
 	tree = !(ci->ci_flags & OCFS2_CACHE_FL_INLINE);
 	to_purge = ci->ci_num_cached;
 
-	mlog(0, "Purge %u %s items from Owner %llu\n", to_purge,
-	     tree ? "array" : "tree",
-	     (unsigned long long)ocfs2_metadata_cache_owner(ci));
+	trace_ocfs2_metadata_cache_purge(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		to_purge, tree);
 
 	/* If we're a tree, save off the root so that we can safely
 	 * initialize the cache. We do the work to free tree members
@@ -249,10 +248,10 @@ static int ocfs2_buffer_cached(struct ocfs2_caching_info *ci,
 
 	ocfs2_metadata_cache_lock(ci);
 
-	mlog(0, "Owner %llu, query block %llu (inline = %u)\n",
-	     (unsigned long long)ocfs2_metadata_cache_owner(ci),
-	     (unsigned long long) bh->b_blocknr,
-	     !!(ci->ci_flags & OCFS2_CACHE_FL_INLINE));
+	trace_ocfs2_buffer_cached_begin(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		(unsigned long long) bh->b_blocknr,
+		!!(ci->ci_flags & OCFS2_CACHE_FL_INLINE));
 
 	if (ci->ci_flags & OCFS2_CACHE_FL_INLINE)
 		index = ocfs2_search_cache_array(ci, bh->b_blocknr);
@@ -261,7 +260,7 @@ static int ocfs2_buffer_cached(struct ocfs2_caching_info *ci,
 
 	ocfs2_metadata_cache_unlock(ci);
 
-	mlog(0, "index = %d, item = %p\n", index, item);
+	trace_ocfs2_buffer_cached_end(index, item);
 
 	return (index != -1) || (item != NULL);
 }
@@ -306,8 +305,9 @@ static void ocfs2_append_cache_array(struct ocfs2_caching_info *ci,
 {
 	BUG_ON(ci->ci_num_cached >= OCFS2_CACHE_INFO_MAX_ARRAY);
 
-	mlog(0, "block %llu takes position %u\n", (unsigned long long) block,
-	     ci->ci_num_cached);
+	trace_ocfs2_append_cache_array(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		(unsigned long long)block, ci->ci_num_cached);
 
 	ci->ci_cache.ci_array[ci->ci_num_cached] = block;
 	ci->ci_num_cached++;
@@ -324,8 +324,9 @@ static void __ocfs2_insert_cache_tree(struct ocfs2_caching_info *ci,
 	struct rb_node **p = &ci->ci_cache.ci_tree.rb_node;
 	struct ocfs2_meta_cache_item *tmp;
 
-	mlog(0, "Insert block %llu num = %u\n", (unsigned long long) block,
-	     ci->ci_num_cached);
+	trace_ocfs2_insert_cache_tree(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		(unsigned long long)block, ci->ci_num_cached);
 
 	while(*p) {
 		parent = *p;
@@ -389,9 +390,9 @@ static void ocfs2_expand_cache(struct ocfs2_caching_info *ci,
 		tree[i] = NULL;
 	}
 
-	mlog(0, "Expanded %llu to a tree cache: flags 0x%x, num = %u\n",
-	     (unsigned long long)ocfs2_metadata_cache_owner(ci),
-	     ci->ci_flags, ci->ci_num_cached);
+	trace_ocfs2_expand_cache(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		ci->ci_flags, ci->ci_num_cached);
 }
 
 /* Slow path function - memory allocation is necessary. See the
@@ -405,9 +406,9 @@ static void __ocfs2_set_buffer_uptodate(struct ocfs2_caching_info *ci,
 	struct ocfs2_meta_cache_item *tree[OCFS2_CACHE_INFO_MAX_ARRAY] =
 		{ NULL, };
 
-	mlog(0, "Owner %llu, block %llu, expand = %d\n",
-	     (unsigned long long)ocfs2_metadata_cache_owner(ci),
-	     (unsigned long long)block, expand_tree);
+	trace_ocfs2_set_buffer_uptodate(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		(unsigned long long)block, expand_tree);
 
 	new = kmem_cache_alloc(ocfs2_uptodate_cachep, GFP_NOFS);
 	if (!new) {
@@ -433,7 +434,6 @@ static void __ocfs2_set_buffer_uptodate(struct ocfs2_caching_info *ci,
 
 	ocfs2_metadata_cache_lock(ci);
 	if (ocfs2_insert_can_use_array(ci)) {
-		mlog(0, "Someone cleared the tree underneath us\n");
 		/* Ok, items were removed from the cache in between
 		 * locks. Detect this and revert back to the fast path */
 		ocfs2_append_cache_array(ci, block);
@@ -490,9 +490,9 @@ void ocfs2_set_buffer_uptodate(struct ocfs2_caching_info *ci,
 	if (ocfs2_buffer_cached(ci, bh))
 		return;
 
-	mlog(0, "Owner %llu, inserting block %llu\n",
-	     (unsigned long long)ocfs2_metadata_cache_owner(ci),
-	     (unsigned long long)bh->b_blocknr);
+	trace_ocfs2_set_buffer_uptodate_begin(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		(unsigned long long)bh->b_blocknr);
 
 	/* No need to recheck under spinlock - insertion is guarded by
 	 * co_io_lock() */
@@ -542,8 +542,9 @@ static void ocfs2_remove_metadata_array(struct ocfs2_caching_info *ci,
 	BUG_ON(index >= ci->ci_num_cached);
 	BUG_ON(!ci->ci_num_cached);
 
-	mlog(0, "remove index %d (num_cached = %u\n", index,
-	     ci->ci_num_cached);
+	trace_ocfs2_remove_metadata_array(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		index, ci->ci_num_cached);
 
 	ci->ci_num_cached--;
 
@@ -559,8 +560,9 @@ static void ocfs2_remove_metadata_array(struct ocfs2_caching_info *ci,
 static void ocfs2_remove_metadata_tree(struct ocfs2_caching_info *ci,
 				       struct ocfs2_meta_cache_item *item)
 {
-	mlog(0, "remove block %llu from tree\n",
-	     (unsigned long long) item->c_block);
+	trace_ocfs2_remove_metadata_tree(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		(unsigned long long)item->c_block);
 
 	rb_erase(&item->c_node, &ci->ci_cache.ci_tree);
 	ci->ci_num_cached--;
@@ -573,10 +575,10 @@ static void ocfs2_remove_block_from_cache(struct ocfs2_caching_info *ci,
 	struct ocfs2_meta_cache_item *item = NULL;
 
 	ocfs2_metadata_cache_lock(ci);
-	mlog(0, "Owner %llu, remove %llu, items = %u, array = %u\n",
-	     (unsigned long long)ocfs2_metadata_cache_owner(ci),
-	     (unsigned long long) block, ci->ci_num_cached,
-	     ci->ci_flags & OCFS2_CACHE_FL_INLINE);
+	trace_ocfs2_remove_block_from_cache(
+		(unsigned long long)ocfs2_metadata_cache_owner(ci),
+		(unsigned long long) block, ci->ci_num_cached,
+		ci->ci_flags);
 
 	if (ci->ci_flags & OCFS2_CACHE_FL_INLINE) {
 		index = ocfs2_search_cache_array(ci, block);
@@ -626,9 +628,6 @@ int __init init_ocfs2_uptodate_cache(void)
 	if (!ocfs2_uptodate_cachep)
 		return -ENOMEM;
 
-	mlog(0, "%u inlined cache items per inode.\n",
-	     OCFS2_CACHE_INFO_MAX_ARRAY);
-
 	return 0;
 }
 
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 6bb6024..57a215d 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -37,7 +37,6 @@
 #include <linux/string.h>
 #include <linux/security.h>
 
-#define MLOG_MASK_PREFIX ML_XATTR
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -57,6 +56,7 @@
 #include "xattr.h"
 #include "refcounttree.h"
 #include "acl.h"
+#include "ocfs2_trace.h"
 
 struct ocfs2_xattr_def_value_root {
 	struct ocfs2_xattr_value_root	xv;
@@ -474,8 +474,7 @@ static int ocfs2_validate_xattr_block(struct super_block *sb,
 	struct ocfs2_xattr_block *xb =
 		(struct ocfs2_xattr_block *)bh->b_data;
 
-	mlog(0, "Validating xattr block %llu\n",
-	     (unsigned long long)bh->b_blocknr);
+	trace_ocfs2_validate_xattr_block((unsigned long long)bh->b_blocknr);
 
 	BUG_ON(!buffer_uptodate(bh));
 
@@ -715,11 +714,11 @@ static int ocfs2_xattr_extend_allocation(struct inode *inode,
 	u32 prev_clusters, logical_start = le32_to_cpu(vb->vb_xv->xr_clusters);
 	struct ocfs2_extent_tree et;
 
-	mlog(0, "(clusters_to_add for xattr= %u)\n", clusters_to_add);
-
 	ocfs2_init_xattr_value_extent_tree(&et, INODE_CACHE(inode), vb);
 
 	while (clusters_to_add) {
+		trace_ocfs2_xattr_extend_allocation(clusters_to_add);
+
 		status = vb->vb_access(handle, INODE_CACHE(inode), vb->vb_bh,
 				       OCFS2_JOURNAL_ACCESS_WRITE);
 		if (status < 0) {
@@ -754,8 +753,6 @@ static int ocfs2_xattr_extend_allocation(struct inode *inode,
 			 */
 			BUG_ON(why == RESTART_META);
 
-			mlog(0, "restarting xattr value extension for %u"
-			     " clusters,.\n", clusters_to_add);
 			credits = ocfs2_calc_extend_credits(inode->i_sb,
 							    &vb->vb_xv->xr_list,
 							    clusters_to_add);
@@ -3246,8 +3243,8 @@ static int ocfs2_init_xattr_set_ctxt(struct inode *inode,
 	}
 
 	meta_add += extra_meta;
-	mlog(0, "Set xattr %s, reserve meta blocks = %d, clusters = %d, "
-	     "credits = %d\n", xi->xi_name, meta_add, clusters_add, *credits);
+	trace_ocfs2_init_xattr_set_ctxt(xi->xi_name, meta_add,
+					clusters_add, *credits);
 
 	if (meta_add) {
 		ret = ocfs2_reserve_new_metadata_blocks(osb, meta_add,
@@ -3887,8 +3884,10 @@ static int ocfs2_xattr_bucket_find(struct inode *inode,
 
 	if (found) {
 		xs->here = &xs->header->xh_entries[index];
-		mlog(0, "find xattr %s in bucket %llu, entry = %u\n", name,
-		     (unsigned long long)bucket_blkno(xs->bucket), index);
+		trace_ocfs2_xattr_bucket_find(OCFS2_I(inode)->ip_blkno,
+			name, name_index, name_hash,
+			(unsigned long long)bucket_blkno(xs->bucket),
+			index);
 	} else
 		ret = -ENODATA;
 
@@ -3915,8 +3914,10 @@ static int ocfs2_xattr_index_block_find(struct inode *inode,
 	if (le16_to_cpu(el->l_next_free_rec) == 0)
 		return -ENODATA;
 
-	mlog(0, "find xattr %s, hash = %u, index = %d in xattr tree\n",
-	     name, name_hash, name_index);
+	trace_ocfs2_xattr_index_block_find(OCFS2_I(inode)->ip_blkno,
+					name, name_index, name_hash,
+					(unsigned long long)root_bh->b_blocknr,
+					-1);
 
 	ret = ocfs2_xattr_get_rec(inode, name_hash, &p_blkno, &first_hash,
 				  &num_clusters, el);
@@ -3927,9 +3928,10 @@ static int ocfs2_xattr_index_block_find(struct inode *inode,
 
 	BUG_ON(p_blkno == 0 || num_clusters == 0 || first_hash > name_hash);
 
-	mlog(0, "find xattr extent rec %u clusters from %llu, the first hash "
-	     "in the rec is %u\n", num_clusters, (unsigned long long)p_blkno,
-	     first_hash);
+	trace_ocfs2_xattr_index_block_find_rec(OCFS2_I(inode)->ip_blkno,
+					name, name_index, first_hash,
+					(unsigned long long)p_blkno,
+					num_clusters);
 
 	ret = ocfs2_xattr_bucket_find(inode, name_index, name, name_hash,
 				      p_blkno, first_hash, num_clusters, xs);
@@ -3955,8 +3957,9 @@ static int ocfs2_iterate_xattr_buckets(struct inode *inode,
 		return -ENOMEM;
 	}
 
-	mlog(0, "iterating xattr buckets in %u clusters starting from %llu\n",
-	     clusters, (unsigned long long)blkno);
+	trace_ocfs2_iterate_xattr_buckets(
+		(unsigned long long)OCFS2_I(inode)->ip_blkno,
+		(unsigned long long)blkno, clusters);
 
 	for (i = 0; i < num_buckets; i++, blkno += bucket->bu_blocks) {
 		ret = ocfs2_read_xattr_bucket(bucket, blkno);
@@ -3972,8 +3975,7 @@ static int ocfs2_iterate_xattr_buckets(struct inode *inode,
 		if (i == 0)
 			num_buckets = le16_to_cpu(bucket_xh(bucket)->xh_num_buckets);
 
-		mlog(0, "iterating xattr bucket %llu, first hash %u\n",
-		     (unsigned long long)blkno,
+		trace_ocfs2_iterate_xattr_bucket((unsigned long long)blkno,
 		     le32_to_cpu(bucket_xh(bucket)->xh_entries[0].xe_name_hash));
 		if (func) {
 			ret = func(inode, bucket, para);
@@ -4173,9 +4175,9 @@ static void ocfs2_cp_xattr_block_to_bucket(struct inode *inode,
 	char *src = xb_bh->b_data;
 	char *target = bucket_block(bucket, blks - 1);
 
-	mlog(0, "cp xattr from block %llu to bucket %llu\n",
-	     (unsigned long long)xb_bh->b_blocknr,
-	     (unsigned long long)bucket_blkno(bucket));
+	trace_ocfs2_cp_xattr_block_to_bucket_begin(
+				(unsigned long long)xb_bh->b_blocknr,
+				(unsigned long long)bucket_blkno(bucket));
 
 	for (i = 0; i < blks; i++)
 		memset(bucket_block(bucket, i), 0, blocksize);
@@ -4211,8 +4213,7 @@ static void ocfs2_cp_xattr_block_to_bucket(struct inode *inode,
 	for (i = 0; i < count; i++)
 		le16_add_cpu(&xh->xh_entries[i].xe_name_offset, off_change);
 
-	mlog(0, "copy entry: start = %u, size = %u, offset_change = %u\n",
-	     offset, size, off_change);
+	trace_ocfs2_cp_xattr_block_to_bucket_end(offset, size, off_change);
 
 	sort(target + offset, count, sizeof(struct ocfs2_xattr_entry),
 	     cmp_xe, swap_xe);
@@ -4261,8 +4262,8 @@ static int ocfs2_xattr_create_index_block(struct inode *inode,
 	struct ocfs2_xattr_tree_root *xr;
 	u16 xb_flags = le16_to_cpu(xb->xb_flags);
 
-	mlog(0, "create xattr index block for %llu\n",
-	     (unsigned long long)xb_bh->b_blocknr);
+	trace_ocfs2_xattr_create_index_block_begin(
+				(unsigned long long)xb_bh->b_blocknr);
 
 	BUG_ON(xb_flags & OCFS2_XATTR_INDEXED);
 	BUG_ON(!xs->bucket);
@@ -4295,8 +4296,7 @@ static int ocfs2_xattr_create_index_block(struct inode *inode,
 	 */
 	blkno = ocfs2_clusters_to_blocks(inode->i_sb, bit_off);
 
-	mlog(0, "allocate 1 cluster from %llu to xattr block\n",
-	     (unsigned long long)blkno);
+	trace_ocfs2_xattr_create_index_block((unsigned long long)blkno);
 
 	ret = ocfs2_init_xattr_bucket(xs->bucket, blkno);
 	if (ret) {
@@ -4400,8 +4400,7 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
 	entries = (char *)xh->xh_entries;
 	xh_free_start = le16_to_cpu(xh->xh_free_start);
 
-	mlog(0, "adjust xattr bucket in %llu, count = %u, "
-	     "xh_free_start = %u, xh_name_value_len = %u.\n",
+	trace_ocfs2_defrag_xattr_bucket(
 	     (unsigned long long)blkno, le16_to_cpu(xh->xh_count),
 	     xh_free_start, le16_to_cpu(xh->xh_name_value_len));
 
@@ -4503,8 +4502,9 @@ static int ocfs2_mv_xattr_bucket_cross_cluster(struct inode *inode,
 	BUG_ON(le16_to_cpu(bucket_xh(first)->xh_num_buckets) < num_buckets);
 	BUG_ON(OCFS2_XATTR_BUCKET_SIZE == OCFS2_SB(sb)->s_clustersize);
 
-	mlog(0, "move half of xattrs in cluster %llu to %llu\n",
-	     (unsigned long long)last_cluster_blkno, (unsigned long long)new_blkno);
+	trace_ocfs2_mv_xattr_bucket_cross_cluster(
+				(unsigned long long)last_cluster_blkno,
+				(unsigned long long)new_blkno);
 
 	ret = ocfs2_mv_xattr_buckets(inode, handle, bucket_blkno(first),
 				     last_cluster_blkno, new_blkno,
@@ -4614,8 +4614,8 @@ static int ocfs2_divide_xattr_bucket(struct inode *inode,
 	struct ocfs2_xattr_entry *xe;
 	int blocksize = inode->i_sb->s_blocksize;
 
-	mlog(0, "move some of xattrs from bucket %llu to %llu\n",
-	     (unsigned long long)blk, (unsigned long long)new_blk);
+	trace_ocfs2_divide_xattr_bucket_begin((unsigned long long)blk,
+					      (unsigned long long)new_blk);
 
 	s_bucket = ocfs2_xattr_bucket_new(inode);
 	t_bucket = ocfs2_xattr_bucket_new(inode);
@@ -4714,9 +4714,9 @@ static int ocfs2_divide_xattr_bucket(struct inode *inode,
 	 */
 	xe = &xh->xh_entries[start];
 	len = sizeof(struct ocfs2_xattr_entry) * (count - start);
-	mlog(0, "mv xattr entry len %d from %d to %d\n", len,
-	     (int)((char *)xe - (char *)xh),
-	     (int)((char *)xh->xh_entries - (char *)xh));
+	trace_ocfs2_divide_xattr_bucket_move(len,
+			(int)((char *)xe - (char *)xh),
+			(int)((char *)xh->xh_entries - (char *)xh));
 	memmove((char *)xh->xh_entries, (char *)xe, len);
 	xe = &xh->xh_entries[count - start];
 	len = sizeof(struct ocfs2_xattr_entry) * start;
@@ -4788,9 +4788,9 @@ static int ocfs2_cp_xattr_bucket(struct inode *inode,
 
 	BUG_ON(s_blkno == t_blkno);
 
-	mlog(0, "cp bucket %llu to %llu, target is %d\n",
-	     (unsigned long long)s_blkno, (unsigned long long)t_blkno,
-	     t_is_new);
+	trace_ocfs2_cp_xattr_bucket((unsigned long long)s_blkno,
+				    (unsigned long long)t_blkno,
+				    t_is_new);
 
 	s_bucket = ocfs2_xattr_bucket_new(inode);
 	t_bucket = ocfs2_xattr_bucket_new(inode);
@@ -4862,8 +4862,8 @@ static int ocfs2_mv_xattr_buckets(struct inode *inode, handle_t *handle,
 	int num_buckets = ocfs2_xattr_buckets_per_cluster(osb);
 	struct ocfs2_xattr_bucket *old_first, *new_first;
 
-	mlog(0, "mv xattrs from cluster %llu to %llu\n",
-	     (unsigned long long)last_blk, (unsigned long long)to_blk);
+	trace_ocfs2_mv_xattr_buckets((unsigned long long)last_blk,
+				     (unsigned long long)to_blk);
 
 	BUG_ON(start_bucket >= num_buckets);
 	if (start_bucket) {
@@ -5013,9 +5013,9 @@ static int ocfs2_adjust_xattr_cross_cluster(struct inode *inode,
 {
 	int ret;
 
-	mlog(0, "adjust xattrs from cluster %llu len %u to %llu\n",
-	     (unsigned long long)bucket_blkno(first), prev_clusters,
-	     (unsigned long long)new_blk);
+	trace_ocfs2_adjust_xattr_cross_cluster(
+			(unsigned long long)bucket_blkno(first),
+			(unsigned long long)new_blk, prev_clusters);
 
 	if (ocfs2_xattr_buckets_per_cluster(OCFS2_SB(inode->i_sb)) > 1) {
 		ret = ocfs2_mv_xattr_bucket_cross_cluster(inode,
@@ -5088,10 +5088,10 @@ static int ocfs2_add_new_xattr_cluster(struct inode *inode,
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 	struct ocfs2_extent_tree et;
 
-	mlog(0, "Add new xattr cluster for %llu, previous xattr hash = %u, "
-	     "previous xattr blkno = %llu\n",
-	     (unsigned long long)OCFS2_I(inode)->ip_blkno,
-	     prev_cpos, (unsigned long long)bucket_blkno(first));
+	trace_ocfs2_add_new_xattr_cluster_begin(
+		(unsigned long long)OCFS2_I(inode)->ip_blkno,
+		(unsigned long long)bucket_blkno(first),
+		prev_cpos, prev_clusters);
 
 	ocfs2_init_xattr_tree_extent_tree(&et, INODE_CACHE(inode), root_bh);
 
@@ -5113,8 +5113,7 @@ static int ocfs2_add_new_xattr_cluster(struct inode *inode,
 	BUG_ON(num_bits > clusters_to_add);
 
 	block = ocfs2_clusters_to_blocks(osb->sb, bit_off);
-	mlog(0, "Allocating %u clusters at block %u for xattr in inode %llu\n",
-	     num_bits, bit_off, (unsigned long long)OCFS2_I(inode)->ip_blkno);
+	trace_ocfs2_add_new_xattr_cluster((unsigned long long)block, num_bits);
 
 	if (bucket_blkno(first) + (prev_clusters * bpc) == block &&
 	    (prev_clusters + num_bits) << osb->s_clustersize_bits <=
@@ -5130,8 +5129,6 @@ static int ocfs2_add_new_xattr_cluster(struct inode *inode,
 		 */
 		v_start = prev_cpos + prev_clusters;
 		*num_clusters = prev_clusters + num_bits;
-		mlog(0, "Add contiguous %u clusters to previous extent rec.\n",
-		     num_bits);
 	} else {
 		ret = ocfs2_adjust_xattr_cross_cluster(inode,
 						       handle,
@@ -5147,8 +5144,8 @@ static int ocfs2_add_new_xattr_cluster(struct inode *inode,
 		}
 	}
 
-	mlog(0, "Insert %u clusters at block %llu for xattr at %u\n",
-	     num_bits, (unsigned long long)block, v_start);
+	trace_ocfs2_add_new_xattr_cluster_insert((unsigned long long)block,
+						 v_start, num_bits);
 	ret = ocfs2_insert_extent(handle, &et, v_start, block,
 				  num_bits, 0, ctxt->meta_ac);
 	if (ret < 0) {
@@ -5183,9 +5180,9 @@ static int ocfs2_extend_xattr_bucket(struct inode *inode,
 	u64 end_blk;
 	u16 new_bucket = le16_to_cpu(bucket_xh(first)->xh_num_buckets);
 
-	mlog(0, "extend xattr bucket in %llu, xattr extend rec starting "
-	     "from %llu, len = %u\n", (unsigned long long)target_blk,
-	     (unsigned long long)bucket_blkno(first), num_clusters);
+	trace_ocfs2_extend_xattr_bucket((unsigned long long)target_blk,
+					(unsigned long long)bucket_blkno(first),
+					num_clusters, new_bucket);
 
 	/* The extent must have room for an additional bucket */
 	BUG_ON(new_bucket >=
@@ -5265,8 +5262,8 @@ static int ocfs2_add_new_xattr_bucket(struct inode *inode,
 	/* The bucket at the front of the extent */
 	struct ocfs2_xattr_bucket *first;
 
-	mlog(0, "Add new xattr bucket starting from %llu\n",
-	     (unsigned long long)bucket_blkno(target));
+	trace_ocfs2_add_new_xattr_bucket(
+				(unsigned long long)bucket_blkno(target));
 
 	/* The first bucket of the original extent */
 	first = ocfs2_xattr_bucket_new(inode);
@@ -5382,8 +5379,8 @@ static int ocfs2_xattr_bucket_value_truncate(struct inode *inode,
 	 * modified something.  We have to assume they did, and dirty
 	 * the whole bucket.  This leaves us in a consistent state.
 	 */
-	mlog(0, "truncate %u in xattr bucket %llu to %d bytes.\n",
-	     xe_off, (unsigned long long)bucket_blkno(bucket), len);
+	trace_ocfs2_xattr_bucket_value_truncate(
+			(unsigned long long)bucket_blkno(bucket), xe_off, len);
 	ret = ocfs2_xattr_value_truncate(inode, &vb, len, ctxt);
 	if (ret) {
 		mlog_errno(ret);
@@ -5433,8 +5430,9 @@ static int ocfs2_rm_xattr_cluster(struct inode *inode,
 
 	ocfs2_init_dealloc_ctxt(&dealloc);
 
-	mlog(0, "rm xattr extent rec at %u len = %u, start from %llu\n",
-	     cpos, len, (unsigned long long)blkno);
+	trace_ocfs2_rm_xattr_cluster(
+			(unsigned long long)OCFS2_I(inode)->ip_blkno,
+			(unsigned long long)blkno, cpos, len);
 
 	ocfs2_remove_xattr_clusters_from_cache(INODE_CACHE(inode), blkno,
 					       len);
@@ -5538,7 +5536,7 @@ static int ocfs2_xattr_set_entry_bucket(struct inode *inode,
 	int ret;
 	struct ocfs2_xa_loc loc;
 
-	mlog_entry("Set xattr %s in xattr bucket\n", xi->xi_name);
+	trace_ocfs2_xattr_set_entry_bucket(xi->xi_name);
 
 	ocfs2_init_xattr_bucket_xa_loc(&loc, xs->bucket,
 				       xs->not_found ? NULL : xs->here);
@@ -5570,7 +5568,6 @@ static int ocfs2_xattr_set_entry_bucket(struct inode *inode,
 
 
 out:
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -5581,7 +5578,7 @@ static int ocfs2_xattr_set_entry_index_block(struct inode *inode,
 {
 	int ret;
 
-	mlog_entry("Set xattr %s in xattr index block\n", xi->xi_name);
+	trace_ocfs2_xattr_set_entry_index_block(xi->xi_name);
 
 	ret = ocfs2_xattr_set_entry_bucket(inode, xi, xs, ctxt);
 	if (!ret)
@@ -5637,7 +5634,6 @@ static int ocfs2_xattr_set_entry_index_block(struct inode *inode,
 		mlog_errno(ret);
 
 out:
-	mlog_exit(ret);
 	return ret;
 }
 
@@ -6041,9 +6037,9 @@ static int ocfs2_xattr_bucket_value_refcount(struct inode *inode,
 	if (ocfs2_meta_ecc(OCFS2_SB(inode->i_sb)))
 		p = &refcount;
 
-	mlog(0, "refcount bucket %llu, count = %u\n",
-	     (unsigned long long)bucket_blkno(bucket),
-	     le16_to_cpu(xh->xh_count));
+	trace_ocfs2_xattr_bucket_value_refcount(
+				(unsigned long long)bucket_blkno(bucket),
+				le16_to_cpu(xh->xh_count));
 	for (i = 0; i < le16_to_cpu(xh->xh_count); i++) {
 		xe = &xh->xh_entries[i];
 
@@ -6339,8 +6335,8 @@ static int ocfs2_reflink_xattr_header(handle_t *handle,
 	u32 clusters, cpos, p_cluster, num_clusters;
 	unsigned int ext_flags = 0;
 
-	mlog(0, "reflink xattr in container %llu, count = %u\n",
-	     (unsigned long long)old_bh->b_blocknr, le16_to_cpu(xh->xh_count));
+	trace_ocfs2_reflink_xattr_header((unsigned long long)old_bh->b_blocknr,
+					 le16_to_cpu(xh->xh_count));
 
 	last = &new_xh->xh_entries[le16_to_cpu(new_xh->xh_count)];
 	for (i = 0, j = 0; i < le16_to_cpu(xh->xh_count); i++, j++) {
@@ -6540,8 +6536,8 @@ static int ocfs2_create_empty_xattr_block(struct inode *inode,
 		goto out;
 	}
 
-	mlog(0, "create new xattr block for inode %llu, index = %d\n",
-	     (unsigned long long)fe_bh->b_blocknr, indexed);
+	trace_ocfs2_create_empty_xattr_block(
+				(unsigned long long)fe_bh->b_blocknr, indexed);
 	ret = ocfs2_create_xattr_block(inode, fe_bh, &ctxt, indexed,
 				       ret_bh);
 	if (ret)
@@ -6952,8 +6948,8 @@ static int ocfs2_reflink_xattr_buckets(handle_t *handle,
 		if (ret)
 			mlog_errno(ret);
 
-		mlog(0, "insert new xattr extent rec start %llu len %u to %u\n",
-		     (unsigned long long)new_blkno, num_clusters, reflink_cpos);
+		trace_ocfs2_reflink_xattr_buckets((unsigned long long)new_blkno,
+						  num_clusters, reflink_cpos);
 
 		len -= num_clusters;
 		blkno += ocfs2_clusters_to_blocks(inode->i_sb, num_clusters);
@@ -6982,8 +6978,7 @@ static int ocfs2_reflink_xattr_rec(struct inode *inode,
 	struct ocfs2_alloc_context *data_ac = NULL;
 	struct ocfs2_extent_tree et;
 
-	mlog(0, "reflink xattr buckets %llu len %u\n",
-	     (unsigned long long)blkno, len);
+	trace_ocfs2_reflink_xattr_rec((unsigned long long)blkno, len);
 
 	ocfs2_init_xattr_tree_extent_tree(&et,
 					  INODE_CACHE(args->reflink->new_inode),
diff --git a/fs/omfs/file.c b/fs/omfs/file.c
index 8a6d34f..d738a7e 100644
--- a/fs/omfs/file.c
+++ b/fs/omfs/file.c
@@ -372,7 +372,6 @@ const struct address_space_operations omfs_aops = {
 	.readpages = omfs_readpages,
 	.writepage = omfs_writepage,
 	.writepages = omfs_writepages,
-	.sync_page = block_sync_page,
 	.write_begin = omfs_write_begin,
 	.write_end = generic_write_end,
 	.bmap = omfs_bmap,
diff --git a/fs/open.c b/fs/open.c
index f83ca80..b52cf01 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -835,17 +835,8 @@ struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags,
 
 	validate_creds(cred);
 
-	/*
-	 * We must always pass in a valid mount pointer.   Historically
-	 * callers got away with not passing it, but we must enforce this at
-	 * the earliest possible point now to avoid strange problems deep in the
-	 * filesystem stack.
-	 */
-	if (!mnt) {
-		printk(KERN_WARNING "%s called with NULL vfsmount\n", __func__);
-		dump_stack();
-		return ERR_PTR(-EINVAL);
-	}
+	/* We must always pass in a valid mount pointer. */
+	BUG_ON(!mnt);
 
 	error = -ENFILE;
 	f = get_empty_filp();
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 9c21119..ac54697 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -290,7 +290,8 @@ ssize_t part_inflight_show(struct device *dev,
 {
 	struct hd_struct *p = dev_to_part(dev);
 
-	return sprintf(buf, "%8u %8u\n", p->in_flight[0], p->in_flight[1]);
+	return sprintf(buf, "%8u %8u\n", atomic_read(&p->in_flight[0]),
+		atomic_read(&p->in_flight[1]));
 }
 
 #ifdef CONFIG_FAIL_MAKE_REQUEST
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 7c99c1c..5e4f776 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -489,8 +489,8 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 		vsize,
 		mm ? get_mm_rss(mm) : 0,
 		rsslim,
-		mm ? mm->start_code : 0,
-		mm ? mm->end_code : 0,
+		mm ? (permitted ? mm->start_code : 1) : 0,
+		mm ? (permitted ? mm->end_code : 1) : 0,
 		(permitted && mm) ? mm->start_stack : 0,
 		esp,
 		eip,
diff --git a/fs/proc/base.c b/fs/proc/base.c
index d49c4b5..5a670c1 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -191,17 +191,20 @@ static int proc_root_link(struct inode *inode, struct path *path)
 	return result;
 }
 
-/*
- * Return zero if current may access user memory in @task, -error if not.
- */
-static int check_mem_permission(struct task_struct *task)
+static struct mm_struct *__check_mem_permission(struct task_struct *task)
 {
+	struct mm_struct *mm;
+
+	mm = get_task_mm(task);
+	if (!mm)
+		return ERR_PTR(-EINVAL);
+
 	/*
 	 * A task can always look at itself, in case it chooses
 	 * to use system calls instead of load instructions.
 	 */
 	if (task == current)
-		return 0;
+		return mm;
 
 	/*
 	 * If current is actively ptrace'ing, and would also be
@@ -213,27 +216,53 @@ static int check_mem_permission(struct task_struct *task)
 		match = (tracehook_tracer_task(task) == current);
 		rcu_read_unlock();
 		if (match && ptrace_may_access(task, PTRACE_MODE_ATTACH))
-			return 0;
+			return mm;
 	}
 
 	/*
 	 * Noone else is allowed.
 	 */
-	return -EPERM;
+	mmput(mm);
+	return ERR_PTR(-EPERM);
+}
+
+/*
+ * If current may access user memory in @task return a reference to the
+ * corresponding mm, otherwise ERR_PTR.
+ */
+static struct mm_struct *check_mem_permission(struct task_struct *task)
+{
+	struct mm_struct *mm;
+	int err;
+
+	/*
+	 * Avoid racing if task exec's as we might get a new mm but validate
+	 * against old credentials.
+	 */
+	err = mutex_lock_killable(&task->signal->cred_guard_mutex);
+	if (err)
+		return ERR_PTR(err);
+
+	mm = __check_mem_permission(task);
+	mutex_unlock(&task->signal->cred_guard_mutex);
+
+	return mm;
 }
 
 struct mm_struct *mm_for_maps(struct task_struct *task)
 {
 	struct mm_struct *mm;
+	int err;
 
-	if (mutex_lock_killable(&task->signal->cred_guard_mutex))
-		return NULL;
+	err =  mutex_lock_killable(&task->signal->cred_guard_mutex);
+	if (err)
+		return ERR_PTR(err);
 
 	mm = get_task_mm(task);
 	if (mm && mm != current->mm &&
 			!ptrace_may_access(task, PTRACE_MODE_READ)) {
 		mmput(mm);
-		mm = NULL;
+		mm = ERR_PTR(-EACCES);
 	}
 	mutex_unlock(&task->signal->cred_guard_mutex);
 
@@ -279,9 +308,9 @@ out:
 
 static int proc_pid_auxv(struct task_struct *task, char *buffer)
 {
-	int res = 0;
-	struct mm_struct *mm = get_task_mm(task);
-	if (mm) {
+	struct mm_struct *mm = mm_for_maps(task);
+	int res = PTR_ERR(mm);
+	if (mm && !IS_ERR(mm)) {
 		unsigned int nwords = 0;
 		do {
 			nwords += 2;
@@ -318,6 +347,23 @@ static int proc_pid_wchan(struct task_struct *task, char *buffer)
 }
 #endif /* CONFIG_KALLSYMS */
 
+static int lock_trace(struct task_struct *task)
+{
+	int err = mutex_lock_killable(&task->signal->cred_guard_mutex);
+	if (err)
+		return err;
+	if (!ptrace_may_access(task, PTRACE_MODE_ATTACH)) {
+		mutex_unlock(&task->signal->cred_guard_mutex);
+		return -EPERM;
+	}
+	return 0;
+}
+
+static void unlock_trace(struct task_struct *task)
+{
+	mutex_unlock(&task->signal->cred_guard_mutex);
+}
+
 #ifdef CONFIG_STACKTRACE
 
 #define MAX_STACK_TRACE_DEPTH	64
@@ -327,6 +373,7 @@ static int proc_pid_stack(struct seq_file *m, struct pid_namespace *ns,
 {
 	struct stack_trace trace;
 	unsigned long *entries;
+	int err;
 	int i;
 
 	entries = kmalloc(MAX_STACK_TRACE_DEPTH * sizeof(*entries), GFP_KERNEL);
@@ -337,15 +384,20 @@ static int proc_pid_stack(struct seq_file *m, struct pid_namespace *ns,
 	trace.max_entries	= MAX_STACK_TRACE_DEPTH;
 	trace.entries		= entries;
 	trace.skip		= 0;
-	save_stack_trace_tsk(task, &trace);
 
-	for (i = 0; i < trace.nr_entries; i++) {
-		seq_printf(m, "[<%p>] %pS\n",
-			   (void *)entries[i], (void *)entries[i]);
+	err = lock_trace(task);
+	if (!err) {
+		save_stack_trace_tsk(task, &trace);
+
+		for (i = 0; i < trace.nr_entries; i++) {
+			seq_printf(m, "[<%pK>] %pS\n",
+				   (void *)entries[i], (void *)entries[i]);
+		}
+		unlock_trace(task);
 	}
 	kfree(entries);
 
-	return 0;
+	return err;
 }
 #endif
 
@@ -508,18 +560,22 @@ static int proc_pid_syscall(struct task_struct *task, char *buffer)
 {
 	long nr;
 	unsigned long args[6], sp, pc;
+	int res = lock_trace(task);
+	if (res)
+		return res;
 
 	if (task_current_syscall(task, &nr, args, 6, &sp, &pc))
-		return sprintf(buffer, "running\n");
-
-	if (nr < 0)
-		return sprintf(buffer, "%ld 0x%lx 0x%lx\n", nr, sp, pc);
-
-	return sprintf(buffer,
+		res = sprintf(buffer, "running\n");
+	else if (nr < 0)
+		res = sprintf(buffer, "%ld 0x%lx 0x%lx\n", nr, sp, pc);
+	else
+		res = sprintf(buffer,
 		       "%ld 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx\n",
 		       nr,
 		       args[0], args[1], args[2], args[3], args[4], args[5],
 		       sp, pc);
+	unlock_trace(task);
+	return res;
 }
 #endif /* CONFIG_HAVE_ARCH_TRACEHOOK */
 
@@ -775,18 +831,14 @@ static ssize_t mem_read(struct file * file, char __user * buf,
 	if (!task)
 		goto out_no_task;
 
-	if (check_mem_permission(task))
-		goto out;
-
 	ret = -ENOMEM;
 	page = (char *)__get_free_page(GFP_TEMPORARY);
 	if (!page)
 		goto out;
 
-	ret = 0;
- 
-	mm = get_task_mm(task);
-	if (!mm)
+	mm = check_mem_permission(task);
+	ret = PTR_ERR(mm);
+	if (IS_ERR(mm))
 		goto out_free;
 
 	ret = -EIO;
@@ -800,8 +852,8 @@ static ssize_t mem_read(struct file * file, char __user * buf,
 		int this_len, retval;
 
 		this_len = (count > PAGE_SIZE) ? PAGE_SIZE : count;
-		retval = access_process_vm(task, src, page, this_len, 0);
-		if (!retval || check_mem_permission(task)) {
+		retval = access_remote_vm(mm, src, page, this_len, 0);
+		if (!retval) {
 			if (!ret)
 				ret = -EIO;
 			break;
@@ -829,10 +881,6 @@ out_no_task:
 	return ret;
 }
 
-#define mem_write NULL
-
-#ifndef mem_write
-/* This is a security hazard */
 static ssize_t mem_write(struct file * file, const char __user *buf,
 			 size_t count, loff_t *ppos)
 {
@@ -840,18 +888,25 @@ static ssize_t mem_write(struct file * file, const char __user *buf,
 	char *page;
 	struct task_struct *task = get_proc_task(file->f_path.dentry->d_inode);
 	unsigned long dst = *ppos;
+	struct mm_struct *mm;
 
 	copied = -ESRCH;
 	if (!task)
 		goto out_no_task;
 
-	if (check_mem_permission(task))
-		goto out;
+	mm = check_mem_permission(task);
+	copied = PTR_ERR(mm);
+	if (IS_ERR(mm))
+		goto out_task;
+
+	copied = -EIO;
+	if (file->private_data != (void *)((long)current->self_exec_id))
+		goto out_mm;
 
 	copied = -ENOMEM;
 	page = (char *)__get_free_page(GFP_TEMPORARY);
 	if (!page)
-		goto out;
+		goto out_mm;
 
 	copied = 0;
 	while (count > 0) {
@@ -862,7 +917,7 @@ static ssize_t mem_write(struct file * file, const char __user *buf,
 			copied = -EFAULT;
 			break;
 		}
-		retval = access_process_vm(task, dst, page, this_len, 1);
+		retval = access_remote_vm(mm, dst, page, this_len, 1);
 		if (!retval) {
 			if (!copied)
 				copied = -EIO;
@@ -875,12 +930,13 @@ static ssize_t mem_write(struct file * file, const char __user *buf,
 	}
 	*ppos = dst;
 	free_page((unsigned long) page);
-out:
+out_mm:
+	mmput(mm);
+out_task:
 	put_task_struct(task);
 out_no_task:
 	return copied;
 }
-#endif
 
 loff_t mem_lseek(struct file *file, loff_t offset, int orig)
 {
@@ -917,20 +973,18 @@ static ssize_t environ_read(struct file *file, char __user *buf,
 	if (!task)
 		goto out_no_task;
 
-	if (!ptrace_may_access(task, PTRACE_MODE_READ))
-		goto out;
-
 	ret = -ENOMEM;
 	page = (char *)__get_free_page(GFP_TEMPORARY);
 	if (!page)
 		goto out;
 
-	ret = 0;
 
-	mm = get_task_mm(task);
-	if (!mm)
+	mm = mm_for_maps(task);
+	ret = PTR_ERR(mm);
+	if (!mm || IS_ERR(mm))
 		goto out_free;
 
+	ret = 0;
 	while (count > 0) {
 		int this_len, retval, max_len;
 
@@ -2748,8 +2802,12 @@ static int proc_tgid_io_accounting(struct task_struct *task, char *buffer)
 static int proc_pid_personality(struct seq_file *m, struct pid_namespace *ns,
 				struct pid *pid, struct task_struct *task)
 {
-	seq_printf(m, "%08x\n", task->personality);
-	return 0;
+	int err = lock_trace(task);
+	if (!err) {
+		seq_printf(m, "%08x\n", task->personality);
+		unlock_trace(task);
+	}
+	return err;
 }
 
 /*
@@ -2768,7 +2826,7 @@ static const struct pid_entry tgid_base_stuff[] = {
 	REG("environ",    S_IRUSR, proc_environ_operations),
 	INF("auxv",       S_IRUSR, proc_pid_auxv),
 	ONE("status",     S_IRUGO, proc_pid_status),
-	ONE("personality", S_IRUSR, proc_pid_personality),
+	ONE("personality", S_IRUGO, proc_pid_personality),
 	INF("limits",	  S_IRUGO, proc_pid_limits),
 #ifdef CONFIG_SCHED_DEBUG
 	REG("sched",      S_IRUGO|S_IWUSR, proc_pid_sched_operations),
@@ -2778,7 +2836,7 @@ static const struct pid_entry tgid_base_stuff[] = {
 #endif
 	REG("comm",      S_IRUGO|S_IWUSR, proc_pid_set_comm_operations),
 #ifdef CONFIG_HAVE_ARCH_TRACEHOOK
-	INF("syscall",    S_IRUSR, proc_pid_syscall),
+	INF("syscall",    S_IRUGO, proc_pid_syscall),
 #endif
 	INF("cmdline",    S_IRUGO, proc_pid_cmdline),
 	ONE("stat",       S_IRUGO, proc_tgid_stat),
@@ -2797,7 +2855,7 @@ static const struct pid_entry tgid_base_stuff[] = {
 #ifdef CONFIG_PROC_PAGE_MONITOR
 	REG("clear_refs", S_IWUSR, proc_clear_refs_operations),
 	REG("smaps",      S_IRUGO, proc_smaps_operations),
-	REG("pagemap",    S_IRUSR, proc_pagemap_operations),
+	REG("pagemap",    S_IRUGO, proc_pagemap_operations),
 #endif
 #ifdef CONFIG_SECURITY
 	DIR("attr",       S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations),
@@ -2806,7 +2864,7 @@ static const struct pid_entry tgid_base_stuff[] = {
 	INF("wchan",      S_IRUGO, proc_pid_wchan),
 #endif
 #ifdef CONFIG_STACKTRACE
-	ONE("stack",      S_IRUSR, proc_pid_stack),
+	ONE("stack",      S_IRUGO, proc_pid_stack),
 #endif
 #ifdef CONFIG_SCHEDSTATS
 	INF("schedstat",  S_IRUGO, proc_pid_schedstat),
@@ -3108,14 +3166,14 @@ static const struct pid_entry tid_base_stuff[] = {
 	REG("environ",   S_IRUSR, proc_environ_operations),
 	INF("auxv",      S_IRUSR, proc_pid_auxv),
 	ONE("status",    S_IRUGO, proc_pid_status),
-	ONE("personality", S_IRUSR, proc_pid_personality),
+	ONE("personality", S_IRUGO, proc_pid_personality),
 	INF("limits",	 S_IRUGO, proc_pid_limits),
 #ifdef CONFIG_SCHED_DEBUG
 	REG("sched",     S_IRUGO|S_IWUSR, proc_pid_sched_operations),
 #endif
 	REG("comm",      S_IRUGO|S_IWUSR, proc_pid_set_comm_operations),
 #ifdef CONFIG_HAVE_ARCH_TRACEHOOK
-	INF("syscall",   S_IRUSR, proc_pid_syscall),
+	INF("syscall",   S_IRUGO, proc_pid_syscall),
 #endif
 	INF("cmdline",   S_IRUGO, proc_pid_cmdline),
 	ONE("stat",      S_IRUGO, proc_tid_stat),
@@ -3133,7 +3191,7 @@ static const struct pid_entry tid_base_stuff[] = {
 #ifdef CONFIG_PROC_PAGE_MONITOR
 	REG("clear_refs", S_IWUSR, proc_clear_refs_operations),
 	REG("smaps",     S_IRUGO, proc_smaps_operations),
-	REG("pagemap",    S_IRUSR, proc_pagemap_operations),
+	REG("pagemap",    S_IRUGO, proc_pagemap_operations),
 #endif
 #ifdef CONFIG_SECURITY
 	DIR("attr",      S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations),
@@ -3142,7 +3200,7 @@ static const struct pid_entry tid_base_stuff[] = {
 	INF("wchan",     S_IRUGO, proc_pid_wchan),
 #endif
 #ifdef CONFIG_STACKTRACE
-	ONE("stack",      S_IRUSR, proc_pid_stack),
+	ONE("stack",      S_IRUGO, proc_pid_stack),
 #endif
 #ifdef CONFIG_SCHEDSTATS
 	INF("schedstat", S_IRUGO, proc_pid_schedstat),
@@ -3161,7 +3219,7 @@ static const struct pid_entry tid_base_stuff[] = {
 	REG("oom_score_adj", S_IRUGO|S_IWUSR, proc_oom_score_adj_operations),
 #ifdef CONFIG_AUDITSYSCALL
 	REG("loginuid",  S_IWUSR|S_IRUGO, proc_loginuid_operations),
-	REG("sessionid",  S_IRUSR, proc_sessionid_operations),
+	REG("sessionid",  S_IRUGO, proc_sessionid_operations),
 #endif
 #ifdef CONFIG_FAULT_INJECTION
 	REG("make-it-fail", S_IRUGO|S_IWUSR, proc_fault_inject_operations),
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 01e07f2..f1281339 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -28,7 +28,7 @@
 
 DEFINE_SPINLOCK(proc_subdir_lock);
 
-static int proc_match(int len, const char *name, struct proc_dir_entry *de)
+static int proc_match(unsigned int len, const char *name, struct proc_dir_entry *de)
 {
 	if (de->namelen != len)
 		return 0;
@@ -303,7 +303,7 @@ static int __xlate_proc_name(const char *name, struct proc_dir_entry **ret,
 {
 	const char     		*cp = name, *next;
 	struct proc_dir_entry	*de;
-	int			len;
+	unsigned int		len;
 
 	de = *ret;
 	if (!de)
@@ -602,7 +602,7 @@ static struct proc_dir_entry *__proc_create(struct proc_dir_entry **parent,
 {
 	struct proc_dir_entry *ent = NULL;
 	const char *fn = name;
-	int len;
+	unsigned int len;
 
 	/* make sure name is valid */
 	if (!name || !strlen(name)) goto out;
@@ -786,7 +786,7 @@ void remove_proc_entry(const char *name, struct proc_dir_entry *parent)
 	struct proc_dir_entry **p;
 	struct proc_dir_entry *de = NULL;
 	const char *fn = name;
-	int len;
+	unsigned int len;
 
 	spin_lock(&proc_subdir_lock);
 	if (__xlate_proc_name(name, &parent, &fn) != 0) {
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index d6a7ca1..d15aa1b 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -46,8 +46,6 @@ static void proc_evict_inode(struct inode *inode)
 	}
 }
 
-struct vfsmount *proc_mnt;
-
 static struct kmem_cache * proc_inode_cachep;
 
 static struct inode *proc_alloc_inode(struct super_block *sb)
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 9ad561d..c03e8d3 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -107,7 +107,6 @@ static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
 }
 void pde_put(struct proc_dir_entry *pde);
 
-extern struct vfsmount *proc_mnt;
 int proc_fill_super(struct super_block *);
 struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *);
 
diff --git a/fs/proc/root.c b/fs/proc/root.c
index ef9fa8e..a9000e9 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -43,17 +43,6 @@ static struct dentry *proc_mount(struct file_system_type *fs_type,
 	struct pid_namespace *ns;
 	struct proc_inode *ei;
 
-	if (proc_mnt) {
-		/* Seed the root directory with a pid so it doesn't need
-		 * to be special in base.c.  I would do this earlier but
-		 * the only task alive when /proc is mounted the first time
-		 * is the init_task and it doesn't have any pids.
-		 */
-		ei = PROC_I(proc_mnt->mnt_sb->s_root->d_inode);
-		if (!ei->pid)
-			ei->pid = find_get_pid(1);
-	}
-
 	if (flags & MS_KERNMOUNT)
 		ns = (struct pid_namespace *)data;
 	else
@@ -71,16 +60,16 @@ static struct dentry *proc_mount(struct file_system_type *fs_type,
 			return ERR_PTR(err);
 		}
 
-		ei = PROC_I(sb->s_root->d_inode);
-		if (!ei->pid) {
-			rcu_read_lock();
-			ei->pid = get_pid(find_pid_ns(1, ns));
-			rcu_read_unlock();
-		}
-
 		sb->s_flags |= MS_ACTIVE;
 	}
 
+	ei = PROC_I(sb->s_root->d_inode);
+	if (!ei->pid) {
+		rcu_read_lock();
+		ei->pid = get_pid(find_pid_ns(1, ns));
+		rcu_read_unlock();
+	}
+
 	return dget(sb->s_root);
 }
 
@@ -101,19 +90,20 @@ static struct file_system_type proc_fs_type = {
 
 void __init proc_root_init(void)
 {
+	struct vfsmount *mnt;
 	int err;
 
 	proc_init_inodecache();
 	err = register_filesystem(&proc_fs_type);
 	if (err)
 		return;
-	proc_mnt = kern_mount_data(&proc_fs_type, &init_pid_ns);
-	if (IS_ERR(proc_mnt)) {
+	mnt = kern_mount_data(&proc_fs_type, &init_pid_ns);
+	if (IS_ERR(mnt)) {
 		unregister_filesystem(&proc_fs_type);
 		return;
 	}
 
-	init_pid_ns.proc_mnt = proc_mnt;
+	init_pid_ns.proc_mnt = mnt;
 	proc_symlink("mounts", NULL, "self/mounts");
 
 	proc_net_init();
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 60b9148..2e7addf 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1,5 +1,6 @@
 #include <linux/mm.h>
 #include <linux/hugetlb.h>
+#include <linux/huge_mm.h>
 #include <linux/mount.h>
 #include <linux/seq_file.h>
 #include <linux/highmem.h>
@@ -7,6 +8,7 @@
 #include <linux/slab.h>
 #include <linux/pagemap.h>
 #include <linux/mempolicy.h>
+#include <linux/rmap.h>
 #include <linux/swap.h>
 #include <linux/swapops.h>
 
@@ -119,14 +121,14 @@ static void *m_start(struct seq_file *m, loff_t *pos)
 
 	priv->task = get_pid_task(priv->pid, PIDTYPE_PID);
 	if (!priv->task)
-		return NULL;
+		return ERR_PTR(-ESRCH);
 
 	mm = mm_for_maps(priv->task);
-	if (!mm)
-		return NULL;
+	if (!mm || IS_ERR(mm))
+		return mm;
 	down_read(&mm->mmap_sem);
 
-	tail_vma = get_gate_vma(priv->task);
+	tail_vma = get_gate_vma(priv->task->mm);
 	priv->tail_vma = tail_vma;
 
 	/* Start with last addr hint */
@@ -180,7 +182,8 @@ static void m_stop(struct seq_file *m, void *v)
 	struct proc_maps_private *priv = m->private;
 	struct vm_area_struct *vma = v;
 
-	vma_stop(priv, vma);
+	if (!IS_ERR(vma))
+		vma_stop(priv, vma);
 	if (priv->task)
 		put_task_struct(priv->task);
 }
@@ -249,8 +252,8 @@ static void show_map_vma(struct seq_file *m, struct vm_area_struct *vma)
 		const char *name = arch_vma_name(vma);
 		if (!name) {
 			if (mm) {
-				if (vma->vm_start <= mm->start_brk &&
-						vma->vm_end >= mm->brk) {
+				if (vma->vm_start <= mm->brk &&
+						vma->vm_end >= mm->start_brk) {
 					name = "[heap]";
 				} else if (vma->vm_start <= mm->start_stack &&
 					   vma->vm_end >= mm->start_stack) {
@@ -277,7 +280,8 @@ static int show_map(struct seq_file *m, void *v)
 	show_map_vma(m, vma);
 
 	if (m->count < m->size)  /* vma is copied successfully */
-		m->version = (vma != get_gate_vma(task))? vma->vm_start: 0;
+		m->version = (vma != get_gate_vma(task->mm))
+			? vma->vm_start : 0;
 	return 0;
 }
 
@@ -329,58 +333,86 @@ struct mem_size_stats {
 	unsigned long private_dirty;
 	unsigned long referenced;
 	unsigned long anonymous;
+	unsigned long anonymous_thp;
 	unsigned long swap;
 	u64 pss;
 };
 
-static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
-			   struct mm_walk *walk)
+
+static void smaps_pte_entry(pte_t ptent, unsigned long addr,
+		unsigned long ptent_size, struct mm_walk *walk)
 {
 	struct mem_size_stats *mss = walk->private;
 	struct vm_area_struct *vma = mss->vma;
-	pte_t *pte, ptent;
-	spinlock_t *ptl;
 	struct page *page;
 	int mapcount;
 
-	pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
-	for (; addr != end; pte++, addr += PAGE_SIZE) {
-		ptent = *pte;
-
-		if (is_swap_pte(ptent)) {
-			mss->swap += PAGE_SIZE;
-			continue;
-		}
+	if (is_swap_pte(ptent)) {
+		mss->swap += ptent_size;
+		return;
+	}
 
-		if (!pte_present(ptent))
-			continue;
+	if (!pte_present(ptent))
+		return;
+
+	page = vm_normal_page(vma, addr, ptent);
+	if (!page)
+		return;
+
+	if (PageAnon(page))
+		mss->anonymous += ptent_size;
+
+	mss->resident += ptent_size;
+	/* Accumulate the size in pages that have been accessed. */
+	if (pte_young(ptent) || PageReferenced(page))
+		mss->referenced += ptent_size;
+	mapcount = page_mapcount(page);
+	if (mapcount >= 2) {
+		if (pte_dirty(ptent) || PageDirty(page))
+			mss->shared_dirty += ptent_size;
+		else
+			mss->shared_clean += ptent_size;
+		mss->pss += (ptent_size << PSS_SHIFT) / mapcount;
+	} else {
+		if (pte_dirty(ptent) || PageDirty(page))
+			mss->private_dirty += ptent_size;
+		else
+			mss->private_clean += ptent_size;
+		mss->pss += (ptent_size << PSS_SHIFT);
+	}
+}
 
-		page = vm_normal_page(vma, addr, ptent);
-		if (!page)
-			continue;
+static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
+			   struct mm_walk *walk)
+{
+	struct mem_size_stats *mss = walk->private;
+	struct vm_area_struct *vma = mss->vma;
+	pte_t *pte;
+	spinlock_t *ptl;
 
-		if (PageAnon(page))
-			mss->anonymous += PAGE_SIZE;
-
-		mss->resident += PAGE_SIZE;
-		/* Accumulate the size in pages that have been accessed. */
-		if (pte_young(ptent) || PageReferenced(page))
-			mss->referenced += PAGE_SIZE;
-		mapcount = page_mapcount(page);
-		if (mapcount >= 2) {
-			if (pte_dirty(ptent) || PageDirty(page))
-				mss->shared_dirty += PAGE_SIZE;
-			else
-				mss->shared_clean += PAGE_SIZE;
-			mss->pss += (PAGE_SIZE << PSS_SHIFT) / mapcount;
+	spin_lock(&walk->mm->page_table_lock);
+	if (pmd_trans_huge(*pmd)) {
+		if (pmd_trans_splitting(*pmd)) {
+			spin_unlock(&walk->mm->page_table_lock);
+			wait_split_huge_page(vma->anon_vma, pmd);
 		} else {
-			if (pte_dirty(ptent) || PageDirty(page))
-				mss->private_dirty += PAGE_SIZE;
-			else
-				mss->private_clean += PAGE_SIZE;
-			mss->pss += (PAGE_SIZE << PSS_SHIFT);
+			smaps_pte_entry(*(pte_t *)pmd, addr,
+					HPAGE_PMD_SIZE, walk);
+			spin_unlock(&walk->mm->page_table_lock);
+			mss->anonymous_thp += HPAGE_PMD_SIZE;
+			return 0;
 		}
+	} else {
+		spin_unlock(&walk->mm->page_table_lock);
 	}
+	/*
+	 * The mmap_sem held all the way back in m_start() is what
+	 * keeps khugepaged out of here and from collapsing things
+	 * in here.
+	 */
+	pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
+	for (; addr != end; pte++, addr += PAGE_SIZE)
+		smaps_pte_entry(*pte, addr, PAGE_SIZE, walk);
 	pte_unmap_unlock(pte - 1, ptl);
 	cond_resched();
 	return 0;
@@ -416,6 +448,7 @@ static int show_smap(struct seq_file *m, void *v)
 		   "Private_Dirty:  %8lu kB\n"
 		   "Referenced:     %8lu kB\n"
 		   "Anonymous:      %8lu kB\n"
+		   "AnonHugePages:  %8lu kB\n"
 		   "Swap:           %8lu kB\n"
 		   "KernelPageSize: %8lu kB\n"
 		   "MMUPageSize:    %8lu kB\n"
@@ -429,6 +462,7 @@ static int show_smap(struct seq_file *m, void *v)
 		   mss.private_dirty >> 10,
 		   mss.referenced >> 10,
 		   mss.anonymous >> 10,
+		   mss.anonymous_thp >> 10,
 		   mss.swap >> 10,
 		   vma_kernel_pagesize(vma) >> 10,
 		   vma_mmu_pagesize(vma) >> 10,
@@ -436,7 +470,8 @@ static int show_smap(struct seq_file *m, void *v)
 			(unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0);
 
 	if (m->count < m->size)  /* vma is copied successfully */
-		m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0;
+		m->version = (vma != get_gate_vma(task->mm))
+			? vma->vm_start : 0;
 	return 0;
 }
 
@@ -467,6 +502,8 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr,
 	spinlock_t *ptl;
 	struct page *page;
 
+	split_huge_page_pmd(walk->mm, pmd);
+
 	pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
 	for (; addr != end; pte++, addr += PAGE_SIZE) {
 		ptent = *pte;
@@ -623,6 +660,8 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
 	pte_t *pte;
 	int err = 0;
 
+	split_huge_page_pmd(walk->mm, pmd);
+
 	/* find the first VMA at or above 'addr' */
 	vma = find_vma(walk->mm, addr);
 	for (; addr != end; addr += PAGE_SIZE) {
@@ -728,8 +767,9 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
 	if (!task)
 		goto out;
 
-	ret = -EACCES;
-	if (!ptrace_may_access(task, PTRACE_MODE_READ))
+	mm = mm_for_maps(task);
+	ret = PTR_ERR(mm);
+	if (!mm || IS_ERR(mm))
 		goto out_task;
 
 	ret = -EINVAL;
@@ -742,10 +782,6 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
 	if (!count)
 		goto out_task;
 
-	mm = get_task_mm(task);
-	if (!mm)
-		goto out_task;
-
 	pm.len = PM_ENTRY_BYTES * (PAGEMAP_WALK_SIZE >> PAGE_SHIFT);
 	pm.buffer = kmalloc(pm.len, GFP_TEMPORARY);
 	ret = -ENOMEM;
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index b535d3e..980de54 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -199,13 +199,13 @@ static void *m_start(struct seq_file *m, loff_t *pos)
 	/* pin the task and mm whilst we play with them */
 	priv->task = get_pid_task(priv->pid, PIDTYPE_PID);
 	if (!priv->task)
-		return NULL;
+		return ERR_PTR(-ESRCH);
 
 	mm = mm_for_maps(priv->task);
-	if (!mm) {
+	if (!mm || IS_ERR(mm)) {
 		put_task_struct(priv->task);
 		priv->task = NULL;
-		return NULL;
+		return mm;
 	}
 	down_read(&mm->mmap_sem);
 
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
index 0834223..977ed27 100644
--- a/fs/pstore/inode.c
+++ b/fs/pstore/inode.c
@@ -27,6 +27,7 @@
 #include <linux/string.h>
 #include <linux/mount.h>
 #include <linux/ramfs.h>
+#include <linux/parser.h>
 #include <linux/sched.h>
 #include <linux/magic.h>
 #include <linux/pstore.h>
@@ -73,11 +74,16 @@ static int pstore_unlink(struct inode *dir, struct dentry *dentry)
 	struct pstore_private *p = dentry->d_inode->i_private;
 
 	p->erase(p->id);
-	kfree(p);
 
 	return simple_unlink(dir, dentry);
 }
 
+static void pstore_evict_inode(struct inode *inode)
+{
+	end_writeback(inode);
+	kfree(inode->i_private);
+}
+
 static const struct inode_operations pstore_dir_inode_operations = {
 	.lookup		= simple_lookup,
 	.unlink		= pstore_unlink,
@@ -107,9 +113,52 @@ static struct inode *pstore_get_inode(struct super_block *sb,
 	return inode;
 }
 
+enum {
+	Opt_kmsg_bytes, Opt_err
+};
+
+static const match_table_t tokens = {
+	{Opt_kmsg_bytes, "kmsg_bytes=%u"},
+	{Opt_err, NULL}
+};
+
+static void parse_options(char *options)
+{
+	char		*p;
+	substring_t	args[MAX_OPT_ARGS];
+	int		option;
+
+	if (!options)
+		return;
+
+	while ((p = strsep(&options, ",")) != NULL) {
+		int token;
+
+		if (!*p)
+			continue;
+
+		token = match_token(p, tokens, args);
+		switch (token) {
+		case Opt_kmsg_bytes:
+			if (!match_int(&args[0], &option))
+				pstore_set_kmsg_bytes(option);
+			break;
+		}
+	}
+}
+
+static int pstore_remount(struct super_block *sb, int *flags, char *data)
+{
+	parse_options(data);
+
+	return 0;
+}
+
 static const struct super_operations pstore_ops = {
 	.statfs		= simple_statfs,
 	.drop_inode	= generic_delete_inode,
+	.evict_inode	= pstore_evict_inode,
+	.remount_fs	= pstore_remount,
 	.show_options	= generic_show_options,
 };
 
@@ -209,6 +258,8 @@ int pstore_fill_super(struct super_block *sb, void *data, int silent)
 	sb->s_op		= &pstore_ops;
 	sb->s_time_gran		= 1;
 
+	parse_options(data);
+
 	inode = pstore_get_inode(sb, NULL, S_IFDIR | 0755, 0);
 	if (!inode) {
 		err = -ENOMEM;
@@ -252,28 +303,7 @@ static struct file_system_type pstore_fs_type = {
 
 static int __init init_pstore_fs(void)
 {
-	int rc = 0;
-	struct kobject *pstorefs_kobj;
-
-	pstorefs_kobj = kobject_create_and_add("pstore", fs_kobj);
-	if (!pstorefs_kobj) {
-		rc = -ENOMEM;
-		goto done;
-	}
-
-	rc = sysfs_create_file(pstorefs_kobj, &pstore_kmsg_bytes_attr.attr);
-	if (rc)
-		goto done1;
-
-	rc = register_filesystem(&pstore_fs_type);
-	if (rc == 0)
-		goto done;
-
-	sysfs_remove_file(pstorefs_kobj, &pstore_kmsg_bytes_attr.attr);
-done1:
-	kobject_put(pstorefs_kobj);
-done:
-	return rc;
+	return register_filesystem(&pstore_fs_type);
 }
 module_init(init_pstore_fs)
 
diff --git a/fs/pstore/internal.h b/fs/pstore/internal.h
index 76c26d2..8c9f23e 100644
--- a/fs/pstore/internal.h
+++ b/fs/pstore/internal.h
@@ -1,7 +1,6 @@
+extern void	pstore_set_kmsg_bytes(int);
 extern void	pstore_get_records(void);
 extern int	pstore_mkfile(enum pstore_type_id, char *psname, u64 id,
 			      char *data, size_t size,
 			      struct timespec time, int (*erase)(u64));
 extern int	pstore_is_mounted(void);
-
-extern struct kobj_attribute pstore_kmsg_bytes_attr;
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index 705fdf8..f835a25 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -37,27 +37,21 @@
 static DEFINE_SPINLOCK(pstore_lock);
 static struct pstore_info *psinfo;
 
-/* How much of the console log to snapshot. /sys/fs/pstore/kmsg_bytes */
+/* How much of the console log to snapshot */
 static unsigned long kmsg_bytes = 10240;
 
-static ssize_t b_show(struct kobject *kobj,
-		      struct kobj_attribute *attr, char *buf)
+void pstore_set_kmsg_bytes(int bytes)
 {
-	return snprintf(buf, PAGE_SIZE, "%lu\n", kmsg_bytes);
+	kmsg_bytes = bytes;
 }
 
-static ssize_t b_store(struct kobject *kobj, struct kobj_attribute *attr,
-		       const char *buf, size_t count)
-{
-	return (sscanf(buf, "%lu", &kmsg_bytes) > 0) ? count : 0;
-}
-
-struct kobj_attribute pstore_kmsg_bytes_attr =
-	__ATTR(kmsg_bytes, S_IRUGO | S_IWUSR, b_show, b_store);
-
 /* Tag each group of saved records with a sequence number */
 static int	oopscount;
 
+static char *reason_str[] = {
+	"Oops", "Panic", "Kexec", "Restart", "Halt", "Poweroff", "Emergency"
+};
+
 /*
  * callback from kmsg_dump. (s2,l2) has the most recently
  * written bytes, older bytes are in (s1,l1). Save as much
@@ -71,15 +65,20 @@ static void pstore_dump(struct kmsg_dumper *dumper,
 	unsigned long	s1_start, s2_start;
 	unsigned long	l1_cpy, l2_cpy;
 	unsigned long	size, total = 0;
-	char		*dst;
+	char		*dst, *why;
 	u64		id;
 	int		hsize, part = 1;
 
+	if (reason < ARRAY_SIZE(reason_str))
+		why = reason_str[reason];
+	else
+		why = "Unknown";
+
 	mutex_lock(&psinfo->buf_mutex);
 	oopscount++;
 	while (total < kmsg_bytes) {
 		dst = psinfo->buf;
-		hsize = sprintf(dst, "Oops#%d Part%d\n", oopscount, part++);
+		hsize = sprintf(dst, "%s#%d Part%d\n", why, oopscount, part++);
 		size = psinfo->bufsize - hsize;
 		dst += hsize;
 
@@ -96,7 +95,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
 		memcpy(dst + l1_cpy, s2 + s2_start, l2_cpy);
 
 		id = psinfo->write(PSTORE_TYPE_DMESG, hsize + l1_cpy + l2_cpy);
-		if (pstore_is_mounted())
+		if (reason == KMSG_DUMP_OOPS && pstore_is_mounted())
 			pstore_mkfile(PSTORE_TYPE_DMESG, psinfo->name, id,
 				      psinfo->buf, hsize + l1_cpy + l2_cpy,
 				      CURRENT_TIME, psinfo->erase);
diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index e63b417..2b06466 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -335,7 +335,6 @@ static sector_t qnx4_bmap(struct address_space *mapping, sector_t block)
 static const struct address_space_operations qnx4_aops = {
 	.readpage	= qnx4_readpage,
 	.writepage	= qnx4_writepage,
-	.sync_page	= block_sync_page,
 	.write_begin	= qnx4_write_begin,
 	.write_end	= generic_write_end,
 	.bmap		= qnx4_bmap
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index a2a622e..fcc8ae7 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -76,7 +76,7 @@
 #include <linux/buffer_head.h>
 #include <linux/capability.h>
 #include <linux/quotaops.h>
-#include <linux/writeback.h> /* for inode_lock, oddly enough.. */
+#include "../internal.h" /* ugh */
 
 #include <asm/uaccess.h>
 
@@ -900,33 +900,38 @@ static void add_dquot_ref(struct super_block *sb, int type)
 	int reserved = 0;
 #endif
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode_sb_list_lock);
 	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
-		if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW))
+		spin_lock(&inode->i_lock);
+		if ((inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) ||
+		    !atomic_read(&inode->i_writecount) ||
+		    !dqinit_needed(inode, type)) {
+			spin_unlock(&inode->i_lock);
 			continue;
+		}
 #ifdef CONFIG_QUOTA_DEBUG
 		if (unlikely(inode_get_rsv_space(inode) > 0))
 			reserved = 1;
 #endif
-		if (!atomic_read(&inode->i_writecount))
-			continue;
-		if (!dqinit_needed(inode, type))
-			continue;
-
 		__iget(inode);
-		spin_unlock(&inode_lock);
+		spin_unlock(&inode->i_lock);
+		spin_unlock(&inode_sb_list_lock);
 
 		iput(old_inode);
 		__dquot_initialize(inode, type);
-		/* We hold a reference to 'inode' so it couldn't have been
-		 * removed from s_inodes list while we dropped the inode_lock.
-		 * We cannot iput the inode now as we can be holding the last
-		 * reference and we cannot iput it under inode_lock. So we
-		 * keep the reference and iput it later. */
+
+		/*
+		 * We hold a reference to 'inode' so it couldn't have been
+		 * removed from s_inodes list while we dropped the
+		 * inode_sb_list_lock We cannot iput the inode now as we can be
+		 * holding the last reference and we cannot iput it under
+		 * inode_sb_list_lock. So we keep the reference and iput it
+		 * later.
+		 */
 		old_inode = inode;
-		spin_lock(&inode_lock);
+		spin_lock(&inode_sb_list_lock);
 	}
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode_sb_list_lock);
 	iput(old_inode);
 
 #ifdef CONFIG_QUOTA_DEBUG
@@ -1007,7 +1012,7 @@ static void remove_dquot_ref(struct super_block *sb, int type,
 	struct inode *inode;
 	int reserved = 0;
 
-	spin_lock(&inode_lock);
+	spin_lock(&inode_sb_list_lock);
 	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
 		/*
 		 *  We have to scan also I_NEW inodes because they can already
@@ -1021,7 +1026,7 @@ static void remove_dquot_ref(struct super_block *sb, int type,
 			remove_inode_dquot_ref(inode, type, tofree_head);
 		}
 	}
-	spin_unlock(&inode_lock);
+	spin_unlock(&inode_sb_list_lock);
 #ifdef CONFIG_QUOTA_DEBUG
 	if (reserved) {
 		printk(KERN_WARNING "VFS (%s): Writes happened after quota"
diff --git a/fs/reiserfs/Makefile b/fs/reiserfs/Makefile
index 792b3cb..3c3b001 100644
--- a/fs/reiserfs/Makefile
+++ b/fs/reiserfs/Makefile
@@ -31,9 +31,7 @@ endif
 # and causing a panic. Since this behavior only affects ppc32, this ifeq
 # will work around it. If any other architecture displays this behavior,
 # add it here.
-ifeq ($(CONFIG_PPC32),y)
-EXTRA_CFLAGS := $(call cc-ifversion, -lt, 0400, -O1)
-endif
+ccflags-$(CONFIG_PPC32) := $(call cc-ifversion, -lt, 0400, -O1)
 
 TAGS:
 	etags *.c
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 1bba24b..4fd5bb3 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -3217,7 +3217,6 @@ const struct address_space_operations reiserfs_address_space_operations = {
 	.readpages = reiserfs_readpages,
 	.releasepage = reiserfs_releasepage,
 	.invalidatepage = reiserfs_invalidatepage,
-	.sync_page = block_sync_page,
 	.write_begin = reiserfs_write_begin,
 	.write_end = reiserfs_write_end,
 	.bmap = reiserfs_aop_bmap,
diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index 79265fd..4e15305 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -59,7 +59,7 @@ long reiserfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 			if (err)
 				break;
 
-			if (!is_owner_or_cap(inode)) {
+			if (!inode_owner_or_capable(inode)) {
 				err = -EPERM;
 				goto setflags_out;
 			}
@@ -103,7 +103,7 @@ setflags_out:
 		err = put_user(inode->i_generation, (int __user *)arg);
 		break;
 	case REISERFS_IOC_SETVERSION:
-		if (!is_owner_or_cap(inode)) {
+		if (!inode_owner_or_capable(inode)) {
 			err = -EPERM;
 			break;
 		}
diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c
index 90d2fcb..3dc38f1 100644
--- a/fs/reiserfs/xattr_acl.c
+++ b/fs/reiserfs/xattr_acl.c
@@ -26,7 +26,7 @@ posix_acl_set(struct dentry *dentry, const char *name, const void *value,
 	size_t jcreate_blocks;
 	if (!reiserfs_posixacl(inode->i_sb))
 		return -EOPNOTSUPP;
-	if (!is_owner_or_cap(inode))
+	if (!inode_owner_or_capable(inode))
 		return -EPERM;
 
 	if (value) {
diff --git a/fs/select.c b/fs/select.c
index e56560d..d33418f 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -517,9 +517,6 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time)
  * Update: ERESTARTSYS breaks at least the xview clock binary, so
  * I'm trying ERESTARTNOHAND which restart only when you want to.
  */
-#define MAX_SELECT_SECONDS \
-	((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-
 int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp,
 			   fd_set __user *exp, struct timespec *end_time)
 {
diff --git a/fs/squashfs/Kconfig b/fs/squashfs/Kconfig
index aa68a8a..efc309f 100644
--- a/fs/squashfs/Kconfig
+++ b/fs/squashfs/Kconfig
@@ -5,12 +5,12 @@ config SQUASHFS
 	help
 	  Saying Y here includes support for SquashFS 4.0 (a Compressed
 	  Read-Only File System).  Squashfs is a highly compressed read-only
-	  filesystem for Linux.  It uses zlib/lzo compression to compress both
-	  files, inodes and directories.  Inodes in the system are very small
-	  and all blocks are packed to minimise data overhead. Block sizes
-	  greater than 4K are supported up to a maximum of 1 Mbytes (default
-	  block size 128K).  SquashFS 4.0 supports 64 bit filesystems and files
-	  (larger than 4GB), full uid/gid information, hard links and
+	  filesystem for Linux.  It uses zlib, lzo or xz compression to
+	  compress both files, inodes and directories.  Inodes in the system
+	  are very small and all blocks are packed to minimise data overhead.
+	  Block sizes greater than 4K are supported up to a maximum of 1 Mbytes
+	  (default block size 128K).  SquashFS 4.0 supports 64 bit filesystems
+	  and files (larger than 4GB), full uid/gid information, hard links and
 	  timestamps.
 
 	  Squashfs is intended for general read-only filesystem use, for
diff --git a/fs/squashfs/decompressor.c b/fs/squashfs/decompressor.c
index a5940e5..e921bd2 100644
--- a/fs/squashfs/decompressor.c
+++ b/fs/squashfs/decompressor.c
@@ -23,6 +23,7 @@
 
 #include <linux/types.h>
 #include <linux/mutex.h>
+#include <linux/slab.h>
 #include <linux/buffer_head.h>
 
 #include "squashfs_fs.h"
@@ -74,3 +75,36 @@ const struct squashfs_decompressor *squashfs_lookup_decompressor(int id)
 
 	return decompressor[i];
 }
+
+
+void *squashfs_decompressor_init(struct super_block *sb, unsigned short flags)
+{
+	struct squashfs_sb_info *msblk = sb->s_fs_info;
+	void *strm, *buffer = NULL;
+	int length = 0;
+
+	/*
+	 * Read decompressor specific options from file system if present
+	 */
+	if (SQUASHFS_COMP_OPTS(flags)) {
+		buffer = kmalloc(PAGE_CACHE_SIZE, GFP_KERNEL);
+		if (buffer == NULL)
+			return ERR_PTR(-ENOMEM);
+
+		length = squashfs_read_data(sb, &buffer,
+			sizeof(struct squashfs_super_block), 0, NULL,
+			PAGE_CACHE_SIZE, 1);
+
+		if (length < 0) {
+			strm = ERR_PTR(length);
+			goto finished;
+		}
+	}
+
+	strm = msblk->decompressor->init(msblk, buffer, length);
+
+finished:
+	kfree(buffer);
+
+	return strm;
+}
diff --git a/fs/squashfs/decompressor.h b/fs/squashfs/decompressor.h
index 3b305a7..099745a 100644
--- a/fs/squashfs/decompressor.h
+++ b/fs/squashfs/decompressor.h
@@ -24,7 +24,7 @@
  */
 
 struct squashfs_decompressor {
-	void	*(*init)(struct squashfs_sb_info *);
+	void	*(*init)(struct squashfs_sb_info *, void *, int);
 	void	(*free)(void *);
 	int	(*decompress)(struct squashfs_sb_info *, void **,
 		struct buffer_head **, int, int, int, int, int);
@@ -33,11 +33,6 @@ struct squashfs_decompressor {
 	int	supported;
 };
 
-static inline void *squashfs_decompressor_init(struct squashfs_sb_info *msblk)
-{
-	return msblk->decompressor->init(msblk);
-}
-
 static inline void squashfs_decompressor_free(struct squashfs_sb_info *msblk,
 	void *s)
 {
diff --git a/fs/squashfs/dir.c b/fs/squashfs/dir.c
index 0dc340a..3f79cd1 100644
--- a/fs/squashfs/dir.c
+++ b/fs/squashfs/dir.c
@@ -172,6 +172,11 @@ static int squashfs_readdir(struct file *file, void *dirent, filldir_t filldir)
 		length += sizeof(dirh);
 
 		dir_count = le32_to_cpu(dirh.count) + 1;
+
+		/* dir_count should never be larger than 256 */
+		if (dir_count > 256)
+			goto failed_read;
+
 		while (dir_count--) {
 			/*
 			 * Read directory entry.
@@ -183,6 +188,10 @@ static int squashfs_readdir(struct file *file, void *dirent, filldir_t filldir)
 
 			size = le16_to_cpu(dire->size) + 1;
 
+			/* size should never be larger than SQUASHFS_NAME_LEN */
+			if (size > SQUASHFS_NAME_LEN)
+				goto failed_read;
+
 			err = squashfs_read_metadata(inode->i_sb, dire->name,
 					&block, &offset, size);
 			if (err < 0)
diff --git a/fs/squashfs/lzo_wrapper.c b/fs/squashfs/lzo_wrapper.c
index 7da759e..00f4dfc 100644
--- a/fs/squashfs/lzo_wrapper.c
+++ b/fs/squashfs/lzo_wrapper.c
@@ -37,7 +37,7 @@ struct squashfs_lzo {
 	void	*output;
 };
 
-static void *lzo_init(struct squashfs_sb_info *msblk)
+static void *lzo_init(struct squashfs_sb_info *msblk, void *buff, int len)
 {
 	int block_size = max_t(int, msblk->block_size, SQUASHFS_METADATA_SIZE);
 
@@ -58,7 +58,7 @@ failed2:
 failed:
 	ERROR("Failed to allocate lzo workspace\n");
 	kfree(stream);
-	return NULL;
+	return ERR_PTR(-ENOMEM);
 }
 
 
diff --git a/fs/squashfs/namei.c b/fs/squashfs/namei.c
index 7a9464d..5d922a6 100644
--- a/fs/squashfs/namei.c
+++ b/fs/squashfs/namei.c
@@ -176,6 +176,11 @@ static struct dentry *squashfs_lookup(struct inode *dir, struct dentry *dentry,
 		length += sizeof(dirh);
 
 		dir_count = le32_to_cpu(dirh.count) + 1;
+
+		/* dir_count should never be larger than 256 */
+		if (dir_count > 256)
+			goto data_error;
+
 		while (dir_count--) {
 			/*
 			 * Read directory entry.
@@ -187,6 +192,10 @@ static struct dentry *squashfs_lookup(struct inode *dir, struct dentry *dentry,
 
 			size = le16_to_cpu(dire->size) + 1;
 
+			/* size should never be larger than SQUASHFS_NAME_LEN */
+			if (size > SQUASHFS_NAME_LEN)
+				goto data_error;
+
 			err = squashfs_read_metadata(dir->i_sb, dire->name,
 					&block, &offset, size);
 			if (err < 0)
@@ -228,6 +237,9 @@ exit_lookup:
 	d_add(dentry, inode);
 	return ERR_PTR(0);
 
+data_error:
+	err = -EIO;
+
 read_failure:
 	ERROR("Unable to read directory block [%llx:%x]\n",
 		squashfs_i(dir)->start + msblk->directory_table,
diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h
index ba729d8..1f2e608 100644
--- a/fs/squashfs/squashfs.h
+++ b/fs/squashfs/squashfs.h
@@ -48,6 +48,7 @@ extern int squashfs_read_table(struct super_block *, void *, u64, int);
 
 /* decompressor.c */
 extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
+extern void *squashfs_decompressor_init(struct super_block *, unsigned short);
 
 /* export.c */
 extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64,
diff --git a/fs/squashfs/squashfs_fs.h b/fs/squashfs/squashfs_fs.h
index 39533fe..4582c56 100644
--- a/fs/squashfs/squashfs_fs.h
+++ b/fs/squashfs/squashfs_fs.h
@@ -57,6 +57,7 @@
 #define SQUASHFS_ALWAYS_FRAG		5
 #define SQUASHFS_DUPLICATE		6
 #define SQUASHFS_EXPORT			7
+#define SQUASHFS_COMP_OPT		10
 
 #define SQUASHFS_BIT(flag, bit)		((flag >> bit) & 1)
 
@@ -81,6 +82,9 @@
 #define SQUASHFS_EXPORTABLE(flags)		SQUASHFS_BIT(flags, \
 						SQUASHFS_EXPORT)
 
+#define SQUASHFS_COMP_OPTS(flags)		SQUASHFS_BIT(flags, \
+						SQUASHFS_COMP_OPT)
+
 /* Max number of types and file types */
 #define SQUASHFS_DIR_TYPE		1
 #define SQUASHFS_REG_TYPE		2
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c
index 20700b9..5c8184c 100644
--- a/fs/squashfs/super.c
+++ b/fs/squashfs/super.c
@@ -199,10 +199,6 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
 
 	err = -ENOMEM;
 
-	msblk->stream = squashfs_decompressor_init(msblk);
-	if (msblk->stream == NULL)
-		goto failed_mount;
-
 	msblk->block_cache = squashfs_cache_init("metadata",
 			SQUASHFS_CACHED_BLKS, SQUASHFS_METADATA_SIZE);
 	if (msblk->block_cache == NULL)
@@ -215,6 +211,13 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
 		goto failed_mount;
 	}
 
+	msblk->stream = squashfs_decompressor_init(sb, flags);
+	if (IS_ERR(msblk->stream)) {
+		err = PTR_ERR(msblk->stream);
+		msblk->stream = NULL;
+		goto failed_mount;
+	}
+
 	/* Allocate and read id index table */
 	msblk->id_table = squashfs_read_id_index_table(sb,
 		le64_to_cpu(sblk->id_table_start), le16_to_cpu(sblk->no_ids));
@@ -370,8 +373,8 @@ static void squashfs_put_super(struct super_block *sb)
 }
 
 
-static struct dentry *squashfs_mount(struct file_system_type *fs_type, int flags,
-				const char *dev_name, void *data)
+static struct dentry *squashfs_mount(struct file_system_type *fs_type,
+				int flags, const char *dev_name, void *data)
 {
 	return mount_bdev(fs_type, flags, dev_name, data, squashfs_fill_super);
 }
diff --git a/fs/squashfs/xz_wrapper.c b/fs/squashfs/xz_wrapper.c
index c4eb400..aa47a28 100644
--- a/fs/squashfs/xz_wrapper.c
+++ b/fs/squashfs/xz_wrapper.c
@@ -26,10 +26,10 @@
 #include <linux/buffer_head.h>
 #include <linux/slab.h>
 #include <linux/xz.h>
+#include <linux/bitops.h>
 
 #include "squashfs_fs.h"
 #include "squashfs_fs_sb.h"
-#include "squashfs_fs_i.h"
 #include "squashfs.h"
 #include "decompressor.h"
 
@@ -38,24 +38,57 @@ struct squashfs_xz {
 	struct xz_buf buf;
 };
 
-static void *squashfs_xz_init(struct squashfs_sb_info *msblk)
+struct comp_opts {
+	__le32 dictionary_size;
+	__le32 flags;
+};
+
+static void *squashfs_xz_init(struct squashfs_sb_info *msblk, void *buff,
+	int len)
 {
-	int block_size = max_t(int, msblk->block_size, SQUASHFS_METADATA_SIZE);
+	struct comp_opts *comp_opts = buff;
+	struct squashfs_xz *stream;
+	int dict_size = msblk->block_size;
+	int err, n;
+
+	if (comp_opts) {
+		/* check compressor options are the expected length */
+		if (len < sizeof(*comp_opts)) {
+			err = -EIO;
+			goto failed;
+		}
 
-	struct squashfs_xz *stream = kmalloc(sizeof(*stream), GFP_KERNEL);
-	if (stream == NULL)
+		dict_size = le32_to_cpu(comp_opts->dictionary_size);
+
+		/* the dictionary size should be 2^n or 2^n+2^(n+1) */
+		n = ffs(dict_size) - 1;
+		if (dict_size != (1 << n) && dict_size != (1 << n) +
+						(1 << (n + 1))) {
+			err = -EIO;
+			goto failed;
+		}
+	}
+
+	dict_size = max_t(int, dict_size, SQUASHFS_METADATA_SIZE);
+
+	stream = kmalloc(sizeof(*stream), GFP_KERNEL);
+	if (stream == NULL) {
+		err = -ENOMEM;
 		goto failed;
+	}
 
-	stream->state = xz_dec_init(XZ_PREALLOC, block_size);
-	if (stream->state == NULL)
+	stream->state = xz_dec_init(XZ_PREALLOC, dict_size);
+	if (stream->state == NULL) {
+		kfree(stream);
+		err = -ENOMEM;
 		goto failed;
+	}
 
 	return stream;
 
 failed:
-	ERROR("Failed to allocate xz workspace\n");
-	kfree(stream);
-	return NULL;
+	ERROR("Failed to initialise xz decompressor\n");
+	return ERR_PTR(err);
 }
 
 
diff --git a/fs/squashfs/zlib_wrapper.c b/fs/squashfs/zlib_wrapper.c
index 4661ae2..517688b3 100644
--- a/fs/squashfs/zlib_wrapper.c
+++ b/fs/squashfs/zlib_wrapper.c
@@ -26,19 +26,19 @@
 #include <linux/buffer_head.h>
 #include <linux/slab.h>
 #include <linux/zlib.h>
+#include <linux/vmalloc.h>
 
 #include "squashfs_fs.h"
 #include "squashfs_fs_sb.h"
 #include "squashfs.h"
 #include "decompressor.h"
 
-static void *zlib_init(struct squashfs_sb_info *dummy)
+static void *zlib_init(struct squashfs_sb_info *dummy, void *buff, int len)
 {
 	z_stream *stream = kmalloc(sizeof(z_stream), GFP_KERNEL);
 	if (stream == NULL)
 		goto failed;
-	stream->workspace = kmalloc(zlib_inflate_workspacesize(),
-		GFP_KERNEL);
+	stream->workspace = vmalloc(zlib_inflate_workspacesize());
 	if (stream->workspace == NULL)
 		goto failed;
 
@@ -47,7 +47,7 @@ static void *zlib_init(struct squashfs_sb_info *dummy)
 failed:
 	ERROR("Failed to allocate zlib workspace\n");
 	kfree(stream);
-	return NULL;
+	return ERR_PTR(-ENOMEM);
 }
 
 
@@ -56,7 +56,7 @@ static void zlib_free(void *strm)
 	z_stream *stream = strm;
 
 	if (stream)
-		kfree(stream->workspace);
+		vfree(stream->workspace);
 	kfree(stream);
 }
 
diff --git a/fs/super.c b/fs/super.c
index e848649..8a06881 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -71,6 +71,7 @@ static struct super_block *alloc_super(struct file_system_type *type)
 #else
 		INIT_LIST_HEAD(&s->s_files);
 #endif
+		s->s_bdi = &default_backing_dev_info;
 		INIT_LIST_HEAD(&s->s_instances);
 		INIT_HLIST_BL_HEAD(&s->s_anon);
 		INIT_LIST_HEAD(&s->s_inodes);
@@ -936,6 +937,7 @@ mount_fs(struct file_system_type *type, int flags, const char *name, void *data)
 	sb = root->d_sb;
 	BUG_ON(!sb);
 	WARN_ON(!sb->s_bdi);
+	WARN_ON(sb->s_bdi == &default_backing_dev_info);
 	sb->s_flags |= MS_BORN;
 
 	error = security_sb_kern_mount(sb, flags, secdata);
diff --git a/fs/sync.c b/fs/sync.c
index ba76b96..c38ec16 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -7,6 +7,7 @@
 #include <linux/fs.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/namei.h>
 #include <linux/sched.h>
 #include <linux/writeback.h>
 #include <linux/syscalls.h>
@@ -33,7 +34,7 @@ static int __sync_filesystem(struct super_block *sb, int wait)
 	 * This should be safe, as we require bdi backing to actually
 	 * write out data in the first place
 	 */
-	if (!sb->s_bdi || sb->s_bdi == &noop_backing_dev_info)
+	if (sb->s_bdi == &noop_backing_dev_info)
 		return 0;
 
 	if (sb->s_qcop && sb->s_qcop->quota_sync)
@@ -79,7 +80,7 @@ EXPORT_SYMBOL_GPL(sync_filesystem);
 
 static void sync_one_sb(struct super_block *sb, void *arg)
 {
-	if (!(sb->s_flags & MS_RDONLY) && sb->s_bdi)
+	if (!(sb->s_flags & MS_RDONLY))
 		__sync_filesystem(sb, *(int *)arg);
 }
 /*
@@ -128,6 +129,29 @@ void emergency_sync(void)
 	}
 }
 
+/*
+ * sync a single super
+ */
+SYSCALL_DEFINE1(syncfs, int, fd)
+{
+	struct file *file;
+	struct super_block *sb;
+	int ret;
+	int fput_needed;
+
+	file = fget_light(fd, &fput_needed);
+	if (!file)
+		return -EBADF;
+	sb = file->f_dentry->d_sb;
+
+	down_read(&sb->s_umount);
+	ret = sync_filesystem(sb);
+	up_read(&sb->s_umount);
+
+	fput_light(file, fput_needed);
+	return ret;
+}
+
 /**
  * vfs_fsync_range - helper to sync a range of data & metadata to disk
  * @file:		file to sync
diff --git a/fs/sysv/itree.c b/fs/sysv/itree.c
index 9ca6627..fa8d43c 100644
--- a/fs/sysv/itree.c
+++ b/fs/sysv/itree.c
@@ -488,7 +488,6 @@ static sector_t sysv_bmap(struct address_space *mapping, sector_t block)
 const struct address_space_operations sysv_aops = {
 	.readpage = sysv_readpage,
 	.writepage = sysv_writepage,
-	.sync_page = block_sync_page,
 	.write_begin = sysv_write_begin,
 	.write_end = generic_write_end,
 	.bmap = sysv_bmap
diff --git a/fs/ubifs/Kconfig b/fs/ubifs/Kconfig
index 1d1859d..d744090 100644
--- a/fs/ubifs/Kconfig
+++ b/fs/ubifs/Kconfig
@@ -58,12 +58,3 @@ config UBIFS_FS_DEBUG
 	  down UBIFS. You can then further enable / disable individual  debugging
 	  features using UBIFS module parameters and the corresponding sysfs
 	  interfaces.
-
-config UBIFS_FS_DEBUG_CHKS
-	bool "Enable extra checks"
-	depends on UBIFS_FS_DEBUG
-	help
-	  If extra checks are enabled UBIFS will check the consistency of its
-	  internal data structures during operation. However, UBIFS performance
-	  is dramatically slower when this option is selected especially if the
-	  file system is large.
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 01c2b02..f25a733 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -818,7 +818,7 @@ void dbg_dump_leb(const struct ubifs_info *c, int lnum)
 	printk(KERN_DEBUG "(pid %d) start dumping LEB %d\n",
 	       current->pid, lnum);
 
-	buf = __vmalloc(c->leb_size, GFP_KERNEL | GFP_NOFS, PAGE_KERNEL);
+	buf = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL);
 	if (!buf) {
 		ubifs_err("cannot allocate memory for dumping LEB %d", lnum);
 		return;
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index d77db7e..28be1e6 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -448,10 +448,12 @@ static int ubifs_write_begin(struct file *file, struct address_space *mapping,
 		if (!(pos & ~PAGE_CACHE_MASK) && len == PAGE_CACHE_SIZE) {
 			/*
 			 * We change whole page so no need to load it. But we
-			 * have to set the @PG_checked flag to make the further
-			 * code know that the page is new. This might be not
-			 * true, but it is better to budget more than to read
-			 * the page from the media.
+			 * do not know whether this page exists on the media or
+			 * not, so we assume the latter because it requires
+			 * larger budget. The assumption is that it is better
+			 * to budget a bit more than to read the page from the
+			 * media. Thus, we are setting the @PG_checked flag
+			 * here.
 			 */
 			SetPageChecked(page);
 			skipped_read = 1;
@@ -559,6 +561,7 @@ static int ubifs_write_end(struct file *file, struct address_space *mapping,
 		dbg_gen("copied %d instead of %d, read page and repeat",
 			copied, len);
 		cancel_budget(c, page, ui, appending);
+		ClearPageChecked(page);
 
 		/*
 		 * Return 0 to force VFS to repeat the whole operation, or the
diff --git a/fs/ubifs/ioctl.c b/fs/ubifs/ioctl.c
index 8aacd64..548acf4 100644
--- a/fs/ubifs/ioctl.c
+++ b/fs/ubifs/ioctl.c
@@ -160,7 +160,7 @@ long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		if (IS_RDONLY(inode))
 			return -EROFS;
 
-		if (!is_owner_or_cap(inode))
+		if (!inode_owner_or_capable(inode))
 			return -EACCES;
 
 		if (get_user(flags, (int __user *) arg))
diff --git a/fs/ubifs/lprops.c b/fs/ubifs/lprops.c
index c7b25e2..0ee0847 100644
--- a/fs/ubifs/lprops.c
+++ b/fs/ubifs/lprops.c
@@ -1094,7 +1094,7 @@ static int scan_check_cb(struct ubifs_info *c,
 		}
 	}
 
-	buf = __vmalloc(c->leb_size, GFP_KERNEL | GFP_NOFS, PAGE_KERNEL);
+	buf = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL);
 	if (!buf) {
 		ubifs_err("cannot allocate memory to scan LEB %d", lnum);
 		goto out;
diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index 0a3c2c3..0c9c69b 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -1633,7 +1633,7 @@ static int dbg_check_ltab_lnum(struct ubifs_info *c, int lnum)
 	if (!(ubifs_chk_flags & UBIFS_CHK_LPROPS))
 		return 0;
 
-	buf = p = __vmalloc(c->leb_size, GFP_KERNEL | GFP_NOFS, PAGE_KERNEL);
+	buf = p = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL);
 	if (!buf) {
 		ubifs_err("cannot allocate memory for ltab checking");
 		return 0;
@@ -1885,7 +1885,7 @@ static void dump_lpt_leb(const struct ubifs_info *c, int lnum)
 
 	printk(KERN_DEBUG "(pid %d) start dumping LEB %d\n",
 	       current->pid, lnum);
-	buf = p = __vmalloc(c->leb_size, GFP_KERNEL | GFP_NOFS, PAGE_KERNEL);
+	buf = p = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL);
 	if (!buf) {
 		ubifs_err("cannot allocate memory to dump LPT");
 		return;
diff --git a/fs/ubifs/orphan.c b/fs/ubifs/orphan.c
index 2cdbd31..09df318 100644
--- a/fs/ubifs/orphan.c
+++ b/fs/ubifs/orphan.c
@@ -898,7 +898,7 @@ static int dbg_scan_orphans(struct ubifs_info *c, struct check_info *ci)
 	if (c->no_orphs)
 		return 0;
 
-	buf = __vmalloc(c->leb_size, GFP_KERNEL | GFP_NOFS, PAGE_KERNEL);
+	buf = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL);
 	if (!buf) {
 		ubifs_err("cannot allocate memory to check orphans");
 		return 0;
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index e5dc1e1..6ddd997 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -2011,7 +2011,6 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
 	 */
 	c->bdi.name = "ubifs",
 	c->bdi.capabilities = BDI_CAP_MAP_COPY;
-	c->bdi.unplug_io_fn = default_unplug_io_fn;
 	err  = bdi_init(&c->bdi);
 	if (err)
 		goto out_close;
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
index 8994dd0..95518a9 100644
--- a/fs/udf/balloc.c
+++ b/fs/udf/balloc.c
@@ -27,11 +27,10 @@
 #include "udf_i.h"
 #include "udf_sb.h"
 
-#define udf_clear_bit(nr, addr) ext2_clear_bit(nr, addr)
-#define udf_set_bit(nr, addr) ext2_set_bit(nr, addr)
-#define udf_test_bit(nr, addr) ext2_test_bit(nr, addr)
-#define udf_find_next_one_bit(addr, size, offset) \
-		ext2_find_next_bit((unsigned long *)(addr), size, offset)
+#define udf_clear_bit	__test_and_clear_bit_le
+#define udf_set_bit	__test_and_set_bit_le
+#define udf_test_bit	test_bit_le
+#define udf_find_next_one_bit	find_next_bit_le
 
 static int read_block_bitmap(struct super_block *sb,
 			     struct udf_bitmap *bitmap, unsigned int block,
diff --git a/fs/udf/file.c b/fs/udf/file.c
index f391a2a..2a346bb 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -98,7 +98,6 @@ static int udf_adinicb_write_end(struct file *file,
 const struct address_space_operations udf_adinicb_aops = {
 	.readpage	= udf_adinicb_readpage,
 	.writepage	= udf_adinicb_writepage,
-	.sync_page	= block_sync_page,
 	.write_begin = simple_write_begin,
 	.write_end = udf_adinicb_write_end,
 };
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index ccc8143..1d1358e 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -140,7 +140,6 @@ static sector_t udf_bmap(struct address_space *mapping, sector_t block)
 const struct address_space_operations udf_aops = {
 	.readpage	= udf_readpage,
 	.writepage	= udf_writepage,
-	.sync_page	= block_sync_page,
 	.write_begin		= udf_write_begin,
 	.write_end		= generic_write_end,
 	.bmap		= udf_bmap,
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index 03c255f..27a4bab 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -552,7 +552,6 @@ static sector_t ufs_bmap(struct address_space *mapping, sector_t block)
 const struct address_space_operations ufs_aops = {
 	.readpage = ufs_readpage,
 	.writepage = ufs_writepage,
-	.sync_page = block_sync_page,
 	.write_begin = ufs_write_begin,
 	.write_end = generic_write_end,
 	.bmap = ufs_bmap
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
index e56a4f5..1101430 100644
--- a/fs/ufs/truncate.c
+++ b/fs/ufs/truncate.c
@@ -479,7 +479,7 @@ int ufs_truncate(struct inode *inode, loff_t old_i_size)
 			break;
 		if (IS_SYNC(inode) && (inode->i_state & I_DIRTY))
 			ufs_sync_inode (inode);
-		blk_run_address_space(inode->i_mapping);
+		blk_flush_plug(current);
 		yield();
 	}
 
diff --git a/fs/ufs/util.h b/fs/ufs/util.h
index 9f8775c..9541759 100644
--- a/fs/ufs/util.h
+++ b/fs/ufs/util.h
@@ -408,7 +408,7 @@ static inline unsigned _ubh_find_next_zero_bit_(
 	for (;;) {
 		count = min_t(unsigned int, size + offset, uspi->s_bpf);
 		size -= count - offset;
-		pos = ext2_find_next_zero_bit (ubh->bh[base]->b_data, count, offset);
+		pos = find_next_zero_bit_le(ubh->bh[base]->b_data, count, offset);
 		if (pos < count || !size)
 			break;
 		base++;
diff --git a/fs/utimes.c b/fs/utimes.c
index 179b586..ba653f3 100644
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -95,7 +95,7 @@ static int utimes_common(struct path *path, struct timespec *times)
                 if (IS_IMMUTABLE(inode))
 			goto mnt_drop_write_and_out;
 
-		if (!is_owner_or_cap(inode)) {
+		if (!inode_owner_or_capable(inode)) {
 			error = inode_permission(inode, MAY_WRITE);
 			if (error)
 				goto mnt_drop_write_and_out;
diff --git a/fs/xattr.c b/fs/xattr.c
index 01bb813..a19acdb 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -59,7 +59,7 @@ xattr_permission(struct inode *inode, const char *name, int mask)
 		if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
 			return -EPERM;
 		if (S_ISDIR(inode->i_mode) && (inode->i_mode & S_ISVTX) &&
-		    (mask & MAY_WRITE) && !is_owner_or_cap(inode))
+		    (mask & MAY_WRITE) && !inode_owner_or_capable(inode))
 			return -EPERM;
 	}
 
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index faca449..284a7c8 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -16,14 +16,11 @@
 # Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #
 
-EXTRA_CFLAGS +=	 -I$(src) -I$(src)/linux-2.6
+ccflags-y := -I$(src) -I$(src)/linux-2.6
+ccflags-$(CONFIG_XFS_DEBUG) += -g
 
 XFS_LINUX := linux-2.6
 
-ifeq ($(CONFIG_XFS_DEBUG),y)
-	EXTRA_CFLAGS += -g
-endif
-
 obj-$(CONFIG_XFS_FS)		+= xfs.o
 
 xfs-y				+= linux-2.6/xfs_trace.o
@@ -105,11 +102,10 @@ xfs-y				+= $(addprefix $(XFS_LINUX)/, \
 				   xfs_globals.o \
 				   xfs_ioctl.o \
 				   xfs_iops.o \
+				   xfs_message.o \
 				   xfs_super.o \
 				   xfs_sync.o \
 				   xfs_xattr.o)
 
 # Objects in support/
-xfs-y				+= $(addprefix support/, \
-				   debug.o \
-				   uuid.o)
+xfs-y				+= support/uuid.o
diff --git a/fs/xfs/linux-2.6/kmem.c b/fs/xfs/linux-2.6/kmem.c
index 666c9db..a907de5 100644
--- a/fs/xfs/linux-2.6/kmem.c
+++ b/fs/xfs/linux-2.6/kmem.c
@@ -23,6 +23,7 @@
 #include <linux/backing-dev.h>
 #include "time.h"
 #include "kmem.h"
+#include "xfs_message.h"
 
 /*
  * Greedy allocation.  May fail and may return vmalloced memory.
@@ -56,8 +57,8 @@ kmem_alloc(size_t size, unsigned int __nocast flags)
 		if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
 			return ptr;
 		if (!(++retries % 100))
-			printk(KERN_ERR "XFS: possible memory allocation "
-					"deadlock in %s (mode:0x%x)\n",
+			xfs_err(NULL,
+		"possible memory allocation deadlock in %s (mode:0x%x)",
 					__func__, lflags);
 		congestion_wait(BLK_RW_ASYNC, HZ/50);
 	} while (1);
@@ -112,8 +113,8 @@ kmem_zone_alloc(kmem_zone_t *zone, unsigned int __nocast flags)
 		if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
 			return ptr;
 		if (!(++retries % 100))
-			printk(KERN_ERR "XFS: possible memory allocation "
-					"deadlock in %s (mode:0x%x)\n",
+			xfs_err(NULL,
+		"possible memory allocation deadlock in %s (mode:0x%x)",
 					__func__, lflags);
 		congestion_wait(BLK_RW_ASYNC, HZ/50);
 	} while (1);
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index ec7bbb5..52dbd14 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -413,8 +413,7 @@ xfs_submit_ioend_bio(
 	if (xfs_ioend_new_eof(ioend))
 		xfs_mark_inode_dirty(XFS_I(ioend->io_inode));
 
-	submit_bio(wbc->sync_mode == WB_SYNC_ALL ?
-		   WRITE_SYNC_PLUG : WRITE, bio);
+	submit_bio(wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE, bio);
 }
 
 STATIC struct bio *
@@ -854,7 +853,7 @@ xfs_aops_discard_page(
 	if (XFS_FORCED_SHUTDOWN(ip->i_mount))
 		goto out_invalidate;
 
-	xfs_fs_cmn_err(CE_ALERT, ip->i_mount,
+	xfs_alert(ip->i_mount,
 		"page discard on page %p, inode 0x%llx, offset %llu.",
 			page, ip->i_ino, offset);
 
@@ -872,7 +871,7 @@ xfs_aops_discard_page(
 		if (error) {
 			/* something screwed, just bail */
 			if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) {
-				xfs_fs_cmn_err(CE_ALERT, ip->i_mount,
+				xfs_alert(ip->i_mount,
 			"page discard unable to remove delalloc mapping.");
 			}
 			break;
@@ -1411,7 +1410,7 @@ xfs_vm_write_failed(
 		if (error) {
 			/* something screwed, just bail */
 			if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) {
-				xfs_fs_cmn_err(CE_ALERT, ip->i_mount,
+				xfs_alert(ip->i_mount,
 			"xfs_vm_write_failed: unable to clean up ino %lld",
 						ip->i_ino);
 			}
@@ -1495,7 +1494,6 @@ const struct address_space_operations xfs_address_space_operations = {
 	.readpages		= xfs_vm_readpages,
 	.writepage		= xfs_vm_writepage,
 	.writepages		= xfs_vm_writepages,
-	.sync_page		= block_sync_page,
 	.releasepage		= xfs_vm_releasepage,
 	.invalidatepage		= xfs_vm_invalidatepage,
 	.write_begin		= xfs_vm_write_begin,
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index f83a4c8..596bb2c 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -94,75 +94,6 @@ xfs_buf_vmap_len(
 }
 
 /*
- *	Page Region interfaces.
- *
- *	For pages in filesystems where the blocksize is smaller than the
- *	pagesize, we use the page->private field (long) to hold a bitmap
- * 	of uptodate regions within the page.
- *
- *	Each such region is "bytes per page / bits per long" bytes long.
- *
- *	NBPPR == number-of-bytes-per-page-region
- *	BTOPR == bytes-to-page-region (rounded up)
- *	BTOPRT == bytes-to-page-region-truncated (rounded down)
- */
-#if (BITS_PER_LONG == 32)
-#define PRSHIFT		(PAGE_CACHE_SHIFT - 5)	/* (32 == 1<<5) */
-#elif (BITS_PER_LONG == 64)
-#define PRSHIFT		(PAGE_CACHE_SHIFT - 6)	/* (64 == 1<<6) */
-#else
-#error BITS_PER_LONG must be 32 or 64
-#endif
-#define NBPPR		(PAGE_CACHE_SIZE/BITS_PER_LONG)
-#define BTOPR(b)	(((unsigned int)(b) + (NBPPR - 1)) >> PRSHIFT)
-#define BTOPRT(b)	(((unsigned int)(b) >> PRSHIFT))
-
-STATIC unsigned long
-page_region_mask(
-	size_t		offset,
-	size_t		length)
-{
-	unsigned long	mask;
-	int		first, final;
-
-	first = BTOPR(offset);
-	final = BTOPRT(offset + length - 1);
-	first = min(first, final);
-
-	mask = ~0UL;
-	mask <<= BITS_PER_LONG - (final - first);
-	mask >>= BITS_PER_LONG - (final);
-
-	ASSERT(offset + length <= PAGE_CACHE_SIZE);
-	ASSERT((final - first) < BITS_PER_LONG && (final - first) >= 0);
-
-	return mask;
-}
-
-STATIC void
-set_page_region(
-	struct page	*page,
-	size_t		offset,
-	size_t		length)
-{
-	set_page_private(page,
-		page_private(page) | page_region_mask(offset, length));
-	if (page_private(page) == ~0UL)
-		SetPageUptodate(page);
-}
-
-STATIC int
-test_page_region(
-	struct page	*page,
-	size_t		offset,
-	size_t		length)
-{
-	unsigned long	mask = page_region_mask(offset, length);
-
-	return (mask && (page_private(page) & mask) == mask);
-}
-
-/*
  * xfs_buf_lru_add - add a buffer to the LRU.
  *
  * The LRU takes a new reference to the buffer so that it will only be freed
@@ -332,7 +263,7 @@ xfs_buf_free(
 
 	ASSERT(list_empty(&bp->b_lru));
 
-	if (bp->b_flags & (_XBF_PAGE_CACHE|_XBF_PAGES)) {
+	if (bp->b_flags & _XBF_PAGES) {
 		uint		i;
 
 		if (xfs_buf_is_vmapped(bp))
@@ -342,25 +273,22 @@ xfs_buf_free(
 		for (i = 0; i < bp->b_page_count; i++) {
 			struct page	*page = bp->b_pages[i];
 
-			if (bp->b_flags & _XBF_PAGE_CACHE)
-				ASSERT(!PagePrivate(page));
-			page_cache_release(page);
+			__free_page(page);
 		}
-	}
+	} else if (bp->b_flags & _XBF_KMEM)
+		kmem_free(bp->b_addr);
 	_xfs_buf_free_pages(bp);
 	xfs_buf_deallocate(bp);
 }
 
 /*
- *	Finds all pages for buffer in question and builds it's page list.
+ * Allocates all the pages for buffer in question and builds it's page list.
  */
 STATIC int
-_xfs_buf_lookup_pages(
+xfs_buf_allocate_memory(
 	xfs_buf_t		*bp,
 	uint			flags)
 {
-	struct address_space	*mapping = bp->b_target->bt_mapping;
-	size_t			blocksize = bp->b_target->bt_bsize;
 	size_t			size = bp->b_count_desired;
 	size_t			nbytes, offset;
 	gfp_t			gfp_mask = xb_to_gfp(flags);
@@ -369,29 +297,55 @@ _xfs_buf_lookup_pages(
 	xfs_off_t		end;
 	int			error;
 
+	/*
+	 * for buffers that are contained within a single page, just allocate
+	 * the memory from the heap - there's no need for the complexity of
+	 * page arrays to keep allocation down to order 0.
+	 */
+	if (bp->b_buffer_length < PAGE_SIZE) {
+		bp->b_addr = kmem_alloc(bp->b_buffer_length, xb_to_km(flags));
+		if (!bp->b_addr) {
+			/* low memory - use alloc_page loop instead */
+			goto use_alloc_page;
+		}
+
+		if (((unsigned long)(bp->b_addr + bp->b_buffer_length - 1) &
+								PAGE_MASK) !=
+		    ((unsigned long)bp->b_addr & PAGE_MASK)) {
+			/* b_addr spans two pages - use alloc_page instead */
+			kmem_free(bp->b_addr);
+			bp->b_addr = NULL;
+			goto use_alloc_page;
+		}
+		bp->b_offset = offset_in_page(bp->b_addr);
+		bp->b_pages = bp->b_page_array;
+		bp->b_pages[0] = virt_to_page(bp->b_addr);
+		bp->b_page_count = 1;
+		bp->b_flags |= XBF_MAPPED | _XBF_KMEM;
+		return 0;
+	}
+
+use_alloc_page:
 	end = bp->b_file_offset + bp->b_buffer_length;
 	page_count = xfs_buf_btoc(end) - xfs_buf_btoct(bp->b_file_offset);
-
 	error = _xfs_buf_get_pages(bp, page_count, flags);
 	if (unlikely(error))
 		return error;
-	bp->b_flags |= _XBF_PAGE_CACHE;
 
 	offset = bp->b_offset;
-	first = bp->b_file_offset >> PAGE_CACHE_SHIFT;
+	first = bp->b_file_offset >> PAGE_SHIFT;
+	bp->b_flags |= _XBF_PAGES;
 
 	for (i = 0; i < bp->b_page_count; i++) {
 		struct page	*page;
 		uint		retries = 0;
-
-	      retry:
-		page = find_or_create_page(mapping, first + i, gfp_mask);
+retry:
+		page = alloc_page(gfp_mask);
 		if (unlikely(page == NULL)) {
 			if (flags & XBF_READ_AHEAD) {
 				bp->b_page_count = i;
-				for (i = 0; i < bp->b_page_count; i++)
-					unlock_page(bp->b_pages[i]);
-				return -ENOMEM;
+				error = ENOMEM;
+				goto out_free_pages;
 			}
 
 			/*
@@ -401,9 +355,8 @@ _xfs_buf_lookup_pages(
 			 * handle buffer allocation failures we can't do much.
 			 */
 			if (!(++retries % 100))
-				printk(KERN_ERR
-					"XFS: possible memory allocation "
-					"deadlock in %s (mode:0x%x)\n",
+				xfs_err(NULL,
+		"possible memory allocation deadlock in %s (mode:0x%x)",
 					__func__, gfp_mask);
 
 			XFS_STATS_INC(xb_page_retries);
@@ -413,33 +366,16 @@ _xfs_buf_lookup_pages(
 
 		XFS_STATS_INC(xb_page_found);
 
-		nbytes = min_t(size_t, size, PAGE_CACHE_SIZE - offset);
+		nbytes = min_t(size_t, size, PAGE_SIZE - offset);
 		size -= nbytes;
-
-		ASSERT(!PagePrivate(page));
-		if (!PageUptodate(page)) {
-			page_count--;
-			if (blocksize >= PAGE_CACHE_SIZE) {
-				if (flags & XBF_READ)
-					bp->b_flags |= _XBF_PAGE_LOCKED;
-			} else if (!PagePrivate(page)) {
-				if (test_page_region(page, offset, nbytes))
-					page_count++;
-			}
-		}
-
 		bp->b_pages[i] = page;
 		offset = 0;
 	}
+	return 0;
 
-	if (!(bp->b_flags & _XBF_PAGE_LOCKED)) {
-		for (i = 0; i < bp->b_page_count; i++)
-			unlock_page(bp->b_pages[i]);
-	}
-
-	if (page_count == bp->b_page_count)
-		bp->b_flags |= XBF_DONE;
-
+out_free_pages:
+	for (i = 0; i < bp->b_page_count; i++)
+		__free_page(bp->b_pages[i]);
 	return error;
 }
 
@@ -451,14 +387,23 @@ _xfs_buf_map_pages(
 	xfs_buf_t		*bp,
 	uint			flags)
 {
-	/* A single page buffer is always mappable */
+	ASSERT(bp->b_flags & _XBF_PAGES);
 	if (bp->b_page_count == 1) {
+		/* A single page buffer is always mappable */
 		bp->b_addr = page_address(bp->b_pages[0]) + bp->b_offset;
 		bp->b_flags |= XBF_MAPPED;
 	} else if (flags & XBF_MAPPED) {
-		bp->b_addr = vm_map_ram(bp->b_pages, bp->b_page_count,
-					-1, PAGE_KERNEL);
-		if (unlikely(bp->b_addr == NULL))
+		int retried = 0;
+
+		do {
+			bp->b_addr = vm_map_ram(bp->b_pages, bp->b_page_count,
+						-1, PAGE_KERNEL);
+			if (bp->b_addr)
+				break;
+			vm_unmap_aliases();
+		} while (retried++ <= 1);
+
+		if (!bp->b_addr)
 			return -ENOMEM;
 		bp->b_addr += bp->b_offset;
 		bp->b_flags |= XBF_MAPPED;
@@ -569,9 +514,14 @@ found:
 		}
 	}
 
+	/*
+	 * if the buffer is stale, clear all the external state associated with
+	 * it. We need to keep flags such as how we allocated the buffer memory
+	 * intact here.
+	 */
 	if (bp->b_flags & XBF_STALE) {
 		ASSERT((bp->b_flags & _XBF_DELWRI_Q) == 0);
-		bp->b_flags &= XBF_MAPPED;
+		bp->b_flags &= XBF_MAPPED | _XBF_KMEM | _XBF_PAGES;
 	}
 
 	trace_xfs_buf_find(bp, flags, _RET_IP_);
@@ -592,7 +542,7 @@ xfs_buf_get(
 	xfs_buf_flags_t		flags)
 {
 	xfs_buf_t		*bp, *new_bp;
-	int			error = 0, i;
+	int			error = 0;
 
 	new_bp = xfs_buf_allocate(flags);
 	if (unlikely(!new_bp))
@@ -600,7 +550,7 @@ xfs_buf_get(
 
 	bp = _xfs_buf_find(target, ioff, isize, flags, new_bp);
 	if (bp == new_bp) {
-		error = _xfs_buf_lookup_pages(bp, flags);
+		error = xfs_buf_allocate_memory(bp, flags);
 		if (error)
 			goto no_buffer;
 	} else {
@@ -609,14 +559,11 @@ xfs_buf_get(
 			return NULL;
 	}
 
-	for (i = 0; i < bp->b_page_count; i++)
-		mark_page_accessed(bp->b_pages[i]);
-
 	if (!(bp->b_flags & XBF_MAPPED)) {
 		error = _xfs_buf_map_pages(bp, flags);
 		if (unlikely(error)) {
-			printk(KERN_WARNING "%s: failed to map pages\n",
-					__func__);
+			xfs_warn(target->bt_mount,
+				"%s: failed to map pages\n", __func__);
 			goto no_buffer;
 		}
 	}
@@ -712,8 +659,7 @@ xfs_buf_readahead(
 {
 	struct backing_dev_info *bdi;
 
-	bdi = target->bt_mapping->backing_dev_info;
-	if (bdi_read_congested(bdi))
+	if (bdi_read_congested(target->bt_bdi))
 		return;
 
 	xfs_buf_read(target, ioff, isize,
@@ -791,10 +737,10 @@ xfs_buf_associate_memory(
 	size_t			buflen;
 	int			page_count;
 
-	pageaddr = (unsigned long)mem & PAGE_CACHE_MASK;
+	pageaddr = (unsigned long)mem & PAGE_MASK;
 	offset = (unsigned long)mem - pageaddr;
-	buflen = PAGE_CACHE_ALIGN(len + offset);
-	page_count = buflen >> PAGE_CACHE_SHIFT;
+	buflen = PAGE_ALIGN(len + offset);
+	page_count = buflen >> PAGE_SHIFT;
 
 	/* Free any previous set of page pointers */
 	if (bp->b_pages)
@@ -811,13 +757,12 @@ xfs_buf_associate_memory(
 
 	for (i = 0; i < bp->b_page_count; i++) {
 		bp->b_pages[i] = mem_to_page((void *)pageaddr);
-		pageaddr += PAGE_CACHE_SIZE;
+		pageaddr += PAGE_SIZE;
 	}
 
 	bp->b_count_desired = len;
 	bp->b_buffer_length = buflen;
 	bp->b_flags |= XBF_MAPPED;
-	bp->b_flags &= ~_XBF_PAGE_LOCKED;
 
 	return 0;
 }
@@ -850,8 +795,8 @@ xfs_buf_get_uncached(
 
 	error = _xfs_buf_map_pages(bp, XBF_MAPPED);
 	if (unlikely(error)) {
-		printk(KERN_WARNING "%s: failed to map pages\n",
-				__func__);
+		xfs_warn(target->bt_mount,
+			"%s: failed to map pages\n", __func__);
 		goto fail_free_mem;
 	}
 
@@ -924,20 +869,7 @@ xfs_buf_rele(
 
 
 /*
- *	Mutual exclusion on buffers.  Locking model:
- *
- *	Buffers associated with inodes for which buffer locking
- *	is not enabled are not protected by semaphores, and are
- *	assumed to be exclusively owned by the caller.  There is a
- *	spinlock in the buffer, used by the caller when concurrent
- *	access is possible.
- */
-
-/*
- *	Locks a buffer object, if it is not already locked.  Note that this in
- *	no way locks the underlying pages, so it is only useful for
- *	synchronizing concurrent use of buffer objects, not for synchronizing
- *	independent access to the underlying pages.
+ *	Lock a buffer object, if it is not already locked.
  *
  *	If we come across a stale, pinned, locked buffer, we know that we are
  *	being asked to lock a buffer that has been reallocated. Because it is
@@ -971,10 +903,7 @@ xfs_buf_lock_value(
 }
 
 /*
- *	Locks a buffer object.
- *	Note that this in no way locks the underlying pages, so it is only
- *	useful for synchronizing concurrent use of buffer objects, not for
- *	synchronizing independent access to the underlying pages.
+ *	Lock a buffer object.
  *
  *	If we come across a stale, pinned, locked buffer, we know that we
  *	are being asked to lock a buffer that has been reallocated. Because
@@ -991,7 +920,7 @@ xfs_buf_lock(
 	if (atomic_read(&bp->b_pin_count) && (bp->b_flags & XBF_STALE))
 		xfs_log_force(bp->b_target->bt_mount, 0);
 	if (atomic_read(&bp->b_io_remaining))
-		blk_run_address_space(bp->b_target->bt_mapping);
+		blk_flush_plug(current);
 	down(&bp->b_sema);
 	XB_SET_OWNER(bp);
 
@@ -1035,9 +964,7 @@ xfs_buf_wait_unpin(
 		set_current_state(TASK_UNINTERRUPTIBLE);
 		if (atomic_read(&bp->b_pin_count) == 0)
 			break;
-		if (atomic_read(&bp->b_io_remaining))
-			blk_run_address_space(bp->b_target->bt_mapping);
-		schedule();
+		io_schedule();
 	}
 	remove_wait_queue(&bp->b_waiters, &wait);
 	set_current_state(TASK_RUNNING);
@@ -1249,10 +1176,8 @@ _xfs_buf_ioend(
 	xfs_buf_t		*bp,
 	int			schedule)
 {
-	if (atomic_dec_and_test(&bp->b_io_remaining) == 1) {
-		bp->b_flags &= ~_XBF_PAGE_LOCKED;
+	if (atomic_dec_and_test(&bp->b_io_remaining) == 1)
 		xfs_buf_ioend(bp, schedule);
-	}
 }
 
 STATIC void
@@ -1261,35 +1186,12 @@ xfs_buf_bio_end_io(
 	int			error)
 {
 	xfs_buf_t		*bp = (xfs_buf_t *)bio->bi_private;
-	unsigned int		blocksize = bp->b_target->bt_bsize;
-	struct bio_vec		*bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
 
 	xfs_buf_ioerror(bp, -error);
 
 	if (!error && xfs_buf_is_vmapped(bp) && (bp->b_flags & XBF_READ))
 		invalidate_kernel_vmap_range(bp->b_addr, xfs_buf_vmap_len(bp));
 
-	do {
-		struct page	*page = bvec->bv_page;
-
-		ASSERT(!PagePrivate(page));
-		if (unlikely(bp->b_error)) {
-			if (bp->b_flags & XBF_READ)
-				ClearPageUptodate(page);
-		} else if (blocksize >= PAGE_CACHE_SIZE) {
-			SetPageUptodate(page);
-		} else if (!PagePrivate(page) &&
-				(bp->b_flags & _XBF_PAGE_CACHE)) {
-			set_page_region(page, bvec->bv_offset, bvec->bv_len);
-		}
-
-		if (--bvec >= bio->bi_io_vec)
-			prefetchw(&bvec->bv_page->flags);
-
-		if (bp->b_flags & _XBF_PAGE_LOCKED)
-			unlock_page(page);
-	} while (bvec >= bio->bi_io_vec);
-
 	_xfs_buf_ioend(bp, 1);
 	bio_put(bio);
 }
@@ -1303,7 +1205,6 @@ _xfs_buf_ioapply(
 	int			offset = bp->b_offset;
 	int			size = bp->b_count_desired;
 	sector_t		sector = bp->b_bn;
-	unsigned int		blocksize = bp->b_target->bt_bsize;
 
 	total_nr_pages = bp->b_page_count;
 	map_i = 0;
@@ -1324,29 +1225,6 @@ _xfs_buf_ioapply(
 		     (bp->b_flags & XBF_READ_AHEAD) ? READA : READ;
 	}
 
-	/* Special code path for reading a sub page size buffer in --
-	 * we populate up the whole page, and hence the other metadata
-	 * in the same page.  This optimization is only valid when the
-	 * filesystem block size is not smaller than the page size.
-	 */
-	if ((bp->b_buffer_length < PAGE_CACHE_SIZE) &&
-	    ((bp->b_flags & (XBF_READ|_XBF_PAGE_LOCKED)) ==
-	      (XBF_READ|_XBF_PAGE_LOCKED)) &&
-	    (blocksize >= PAGE_CACHE_SIZE)) {
-		bio = bio_alloc(GFP_NOIO, 1);
-
-		bio->bi_bdev = bp->b_target->bt_bdev;
-		bio->bi_sector = sector - (offset >> BBSHIFT);
-		bio->bi_end_io = xfs_buf_bio_end_io;
-		bio->bi_private = bp;
-
-		bio_add_page(bio, bp->b_pages[0], PAGE_CACHE_SIZE, 0);
-		size = 0;
-
-		atomic_inc(&bp->b_io_remaining);
-
-		goto submit_io;
-	}
 
 next_chunk:
 	atomic_inc(&bp->b_io_remaining);
@@ -1360,8 +1238,9 @@ next_chunk:
 	bio->bi_end_io = xfs_buf_bio_end_io;
 	bio->bi_private = bp;
 
+
 	for (; size && nr_pages; nr_pages--, map_i++) {
-		int	rbytes, nbytes = PAGE_CACHE_SIZE - offset;
+		int	rbytes, nbytes = PAGE_SIZE - offset;
 
 		if (nbytes > size)
 			nbytes = size;
@@ -1376,7 +1255,6 @@ next_chunk:
 		total_nr_pages--;
 	}
 
-submit_io:
 	if (likely(bio->bi_size)) {
 		if (xfs_buf_is_vmapped(bp)) {
 			flush_kernel_vmap_range(bp->b_addr,
@@ -1386,18 +1264,7 @@ submit_io:
 		if (size)
 			goto next_chunk;
 	} else {
-		/*
-		 * if we get here, no pages were added to the bio. However,
-		 * we can't just error out here - if the pages are locked then
-		 * we have to unlock them otherwise we can hang on a later
-		 * access to the page.
-		 */
 		xfs_buf_ioerror(bp, EIO);
-		if (bp->b_flags & _XBF_PAGE_LOCKED) {
-			int i;
-			for (i = 0; i < bp->b_page_count; i++)
-				unlock_page(bp->b_pages[i]);
-		}
 		bio_put(bio);
 	}
 }
@@ -1443,7 +1310,7 @@ xfs_buf_iowait(
 	trace_xfs_buf_iowait(bp, _RET_IP_);
 
 	if (atomic_read(&bp->b_io_remaining))
-		blk_run_address_space(bp->b_target->bt_mapping);
+		blk_flush_plug(current);
 	wait_for_completion(&bp->b_iowait);
 
 	trace_xfs_buf_iowait_done(bp, _RET_IP_);
@@ -1461,8 +1328,8 @@ xfs_buf_offset(
 		return XFS_BUF_PTR(bp) + offset;
 
 	offset += bp->b_offset;
-	page = bp->b_pages[offset >> PAGE_CACHE_SHIFT];
-	return (xfs_caddr_t)page_address(page) + (offset & (PAGE_CACHE_SIZE-1));
+	page = bp->b_pages[offset >> PAGE_SHIFT];
+	return (xfs_caddr_t)page_address(page) + (offset & (PAGE_SIZE-1));
 }
 
 /*
@@ -1484,9 +1351,9 @@ xfs_buf_iomove(
 		page = bp->b_pages[xfs_buf_btoct(boff + bp->b_offset)];
 		cpoff = xfs_buf_poff(boff + bp->b_offset);
 		csize = min_t(size_t,
-			      PAGE_CACHE_SIZE-cpoff, bp->b_count_desired-boff);
+			      PAGE_SIZE-cpoff, bp->b_count_desired-boff);
 
-		ASSERT(((csize + cpoff) <= PAGE_CACHE_SIZE));
+		ASSERT(((csize + cpoff) <= PAGE_SIZE));
 
 		switch (mode) {
 		case XBRW_ZERO:
@@ -1599,7 +1466,6 @@ xfs_free_buftarg(
 	xfs_flush_buftarg(btp, 1);
 	if (mp->m_flags & XFS_MOUNT_BARRIER)
 		xfs_blkdev_issue_flush(btp);
-	iput(btp->bt_mapping->host);
 
 	kthread_stop(btp->bt_task);
 	kmem_free(btp);
@@ -1617,21 +1483,12 @@ xfs_setsize_buftarg_flags(
 	btp->bt_smask = sectorsize - 1;
 
 	if (set_blocksize(btp->bt_bdev, sectorsize)) {
-		printk(KERN_WARNING
-			"XFS: Cannot set_blocksize to %u on device %s\n",
+		xfs_warn(btp->bt_mount,
+			"Cannot set_blocksize to %u on device %s\n",
 			sectorsize, XFS_BUFTARG_NAME(btp));
 		return EINVAL;
 	}
 
-	if (verbose &&
-	    (PAGE_CACHE_SIZE / BITS_PER_LONG) > sectorsize) {
-		printk(KERN_WARNING
-			"XFS: %u byte sectors in use on device %s.  "
-			"This is suboptimal; %u or greater is ideal.\n",
-			sectorsize, XFS_BUFTARG_NAME(btp),
-			(unsigned int)PAGE_CACHE_SIZE / BITS_PER_LONG);
-	}
-
 	return 0;
 }
 
@@ -1646,7 +1503,7 @@ xfs_setsize_buftarg_early(
 	struct block_device	*bdev)
 {
 	return xfs_setsize_buftarg_flags(btp,
-			PAGE_CACHE_SIZE, bdev_logical_block_size(bdev), 0);
+			PAGE_SIZE, bdev_logical_block_size(bdev), 0);
 }
 
 int
@@ -1659,41 +1516,6 @@ xfs_setsize_buftarg(
 }
 
 STATIC int
-xfs_mapping_buftarg(
-	xfs_buftarg_t		*btp,
-	struct block_device	*bdev)
-{
-	struct backing_dev_info	*bdi;
-	struct inode		*inode;
-	struct address_space	*mapping;
-	static const struct address_space_operations mapping_aops = {
-		.sync_page = block_sync_page,
-		.migratepage = fail_migrate_page,
-	};
-
-	inode = new_inode(bdev->bd_inode->i_sb);
-	if (!inode) {
-		printk(KERN_WARNING
-			"XFS: Cannot allocate mapping inode for device %s\n",
-			XFS_BUFTARG_NAME(btp));
-		return ENOMEM;
-	}
-	inode->i_ino = get_next_ino();
-	inode->i_mode = S_IFBLK;
-	inode->i_bdev = bdev;
-	inode->i_rdev = bdev->bd_dev;
-	bdi = blk_get_backing_dev_info(bdev);
-	if (!bdi)
-		bdi = &default_backing_dev_info;
-	mapping = &inode->i_data;
-	mapping->a_ops = &mapping_aops;
-	mapping->backing_dev_info = bdi;
-	mapping_set_gfp_mask(mapping, GFP_NOFS);
-	btp->bt_mapping = mapping;
-	return 0;
-}
-
-STATIC int
 xfs_alloc_delwrite_queue(
 	xfs_buftarg_t		*btp,
 	const char		*fsname)
@@ -1721,12 +1543,14 @@ xfs_alloc_buftarg(
 	btp->bt_mount = mp;
 	btp->bt_dev =  bdev->bd_dev;
 	btp->bt_bdev = bdev;
+	btp->bt_bdi = blk_get_backing_dev_info(bdev);
+	if (!btp->bt_bdi)
+		goto error;
+
 	INIT_LIST_HEAD(&btp->bt_lru);
 	spin_lock_init(&btp->bt_lru_lock);
 	if (xfs_setsize_buftarg_early(btp, bdev))
 		goto error;
-	if (xfs_mapping_buftarg(btp, bdev))
-		goto error;
 	if (xfs_alloc_delwrite_queue(btp, fsname))
 		goto error;
 	btp->bt_shrinker.shrink = xfs_buftarg_shrink;
@@ -1948,7 +1772,7 @@ xfsbufd(
 			count++;
 		}
 		if (count)
-			blk_run_address_space(target->bt_mapping);
+			blk_flush_plug(current);
 
 	} while (!kthread_should_stop());
 
@@ -1996,7 +1820,7 @@ xfs_flush_buftarg(
 
 	if (wait) {
 		/* Expedite and wait for IO to complete. */
-		blk_run_address_space(target->bt_mapping);
+		blk_flush_plug(current);
 		while (!list_empty(&wait_list)) {
 			bp = list_first_entry(&wait_list, struct xfs_buf, b_list);
 
diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h
index cbe6595..a9a1c45 100644
--- a/fs/xfs/linux-2.6/xfs_buf.h
+++ b/fs/xfs/linux-2.6/xfs_buf.h
@@ -61,30 +61,11 @@ typedef enum {
 #define XBF_DONT_BLOCK	(1 << 16)/* do not block in current thread */
 
 /* flags used only internally */
-#define _XBF_PAGE_CACHE	(1 << 17)/* backed by pagecache */
 #define _XBF_PAGES	(1 << 18)/* backed by refcounted pages */
 #define	_XBF_RUN_QUEUES	(1 << 19)/* run block device task queue	*/
+#define	_XBF_KMEM	(1 << 20)/* backed by heap memory */
 #define _XBF_DELWRI_Q	(1 << 21)/* buffer on delwri queue */
 
-/*
- * Special flag for supporting metadata blocks smaller than a FSB.
- *
- * In this case we can have multiple xfs_buf_t on a single page and
- * need to lock out concurrent xfs_buf_t readers as they only
- * serialise access to the buffer.
- *
- * If the FSB size >= PAGE_CACHE_SIZE case, we have no serialisation
- * between reads of the page. Hence we can have one thread read the
- * page and modify it, but then race with another thread that thinks
- * the page is not up-to-date and hence reads it again.
- *
- * The result is that the first modifcation to the page is lost.
- * This sort of AGF/AGI reading race can happen when unlinking inodes
- * that require truncation and results in the AGI unlinked list
- * modifications being lost.
- */
-#define _XBF_PAGE_LOCKED	(1 << 22)
-
 typedef unsigned int xfs_buf_flags_t;
 
 #define XFS_BUF_FLAGS \
@@ -100,12 +81,10 @@ typedef unsigned int xfs_buf_flags_t;
 	{ XBF_LOCK,		"LOCK" },  	/* should never be set */\
 	{ XBF_TRYLOCK,		"TRYLOCK" }, 	/* ditto */\
 	{ XBF_DONT_BLOCK,	"DONT_BLOCK" },	/* ditto */\
-	{ _XBF_PAGE_CACHE,	"PAGE_CACHE" }, \
 	{ _XBF_PAGES,		"PAGES" }, \
 	{ _XBF_RUN_QUEUES,	"RUN_QUEUES" }, \
-	{ _XBF_DELWRI_Q,	"DELWRI_Q" }, \
-	{ _XBF_PAGE_LOCKED,	"PAGE_LOCKED" }
-
+	{ _XBF_KMEM,		"KMEM" }, \
+	{ _XBF_DELWRI_Q,	"DELWRI_Q" }
 
 typedef enum {
 	XBT_FORCE_SLEEP = 0,
@@ -120,7 +99,7 @@ typedef struct xfs_bufhash {
 typedef struct xfs_buftarg {
 	dev_t			bt_dev;
 	struct block_device	*bt_bdev;
-	struct address_space	*bt_mapping;
+	struct backing_dev_info	*bt_bdi;
 	struct xfs_mount	*bt_mount;
 	unsigned int		bt_bsize;
 	unsigned int		bt_sshift;
@@ -139,17 +118,6 @@ typedef struct xfs_buftarg {
 	unsigned int		bt_lru_nr;
 } xfs_buftarg_t;
 
-/*
- *	xfs_buf_t:  Buffer structure for pagecache-based buffers
- *
- * This buffer structure is used by the pagecache buffer management routines
- * to refer to an assembly of pages forming a logical buffer.
- *
- * The buffer structure is used on a temporary basis only, and discarded when
- * released.  The real data storage is recorded in the pagecache. Buffers are
- * hashed to the block device on which the file system resides.
- */
-
 struct xfs_buf;
 typedef void (*xfs_buf_iodone_t)(struct xfs_buf *);
 
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index a55c1b4..52aadfb 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -896,6 +896,7 @@ xfs_file_fallocate(
 	xfs_flock64_t	bf;
 	xfs_inode_t	*ip = XFS_I(inode);
 	int		cmd = XFS_IOC_RESVSP;
+	int		attr_flags = XFS_ATTR_NOLOCK;
 
 	if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
 		return -EOPNOTSUPP;
@@ -918,7 +919,10 @@ xfs_file_fallocate(
 			goto out_unlock;
 	}
 
-	error = -xfs_change_file_space(ip, cmd, &bf, 0, XFS_ATTR_NOLOCK);
+	if (file->f_flags & O_DSYNC)
+		attr_flags |= XFS_ATTR_SYNC;
+
+	error = -xfs_change_file_space(ip, cmd, &bf, 0, attr_flags);
 	if (error)
 		goto out_unlock;
 
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index 0ca0e3c..acca2c5 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -624,6 +624,10 @@ xfs_ioc_space(
 
 	if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
 		attr_flags |= XFS_ATTR_NONBLOCK;
+
+	if (filp->f_flags & O_DSYNC)
+		attr_flags |= XFS_ATTR_SYNC;
+
 	if (ioflags & IO_INVIS)
 		attr_flags |= XFS_ATTR_DMI;
 
diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h
index 0964949..244be9c 100644
--- a/fs/xfs/linux-2.6/xfs_linux.h
+++ b/fs/xfs/linux-2.6/xfs_linux.h
@@ -39,7 +39,6 @@
 #include <mrlock.h>
 #include <time.h>
 
-#include <support/debug.h>
 #include <support/uuid.h>
 
 #include <linux/semaphore.h>
@@ -86,6 +85,7 @@
 #include <xfs_aops.h>
 #include <xfs_super.h>
 #include <xfs_buf.h>
+#include <xfs_message.h>
 
 /*
  * Feature macros (disable/enable)
@@ -280,4 +280,25 @@ static inline __uint64_t howmany_64(__uint64_t x, __uint32_t y)
 #define __arch_pack
 #endif
 
+#define ASSERT_ALWAYS(expr)	\
+	(unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
+
+#ifndef DEBUG
+#define ASSERT(expr)	((void)0)
+
+#ifndef STATIC
+# define STATIC static noinline
+#endif
+
+#else /* DEBUG */
+
+#define ASSERT(expr)	\
+	(unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
+
+#ifndef STATIC
+# define STATIC noinline
+#endif
+
+#endif /* DEBUG */
+
 #endif /* __XFS_LINUX__ */
diff --git a/fs/xfs/linux-2.6/xfs_message.c b/fs/xfs/linux-2.6/xfs_message.c
new file mode 100644
index 0000000..508e06f
--- /dev/null
+++ b/fs/xfs/linux-2.6/xfs_message.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2011 Red Hat, Inc.  All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "xfs.h"
+#include "xfs_fs.h"
+#include "xfs_types.h"
+#include "xfs_log.h"
+#include "xfs_inum.h"
+#include "xfs_trans.h"
+#include "xfs_sb.h"
+#include "xfs_ag.h"
+#include "xfs_mount.h"
+
+/*
+ * XFS logging functions
+ */
+static int
+__xfs_printk(
+	const char		*level,
+	const struct xfs_mount	*mp,
+	struct va_format	*vaf)
+{
+	if (mp && mp->m_fsname)
+		return printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf);
+	return printk("%sXFS: %pV\n", level, vaf);
+}
+
+int xfs_printk(
+	const char		*level,
+	const struct xfs_mount	*mp,
+	const char		*fmt, ...)
+{
+	struct va_format	vaf;
+	va_list			args;
+	int			 r;
+
+	va_start(args, fmt);
+
+	vaf.fmt = fmt;
+	vaf.va = &args;
+
+	r = __xfs_printk(level, mp, &vaf);
+	va_end(args);
+
+	return r;
+}
+
+#define define_xfs_printk_level(func, kern_level)		\
+int func(const struct xfs_mount *mp, const char *fmt, ...)	\
+{								\
+	struct va_format	vaf;				\
+	va_list			args;				\
+	int			r;				\
+								\
+	va_start(args, fmt);					\
+								\
+	vaf.fmt = fmt;						\
+	vaf.va = &args;						\
+								\
+	r = __xfs_printk(kern_level, mp, &vaf);			\
+	va_end(args);						\
+								\
+	return r;						\
+}								\
+
+define_xfs_printk_level(xfs_emerg, KERN_EMERG);
+define_xfs_printk_level(xfs_alert, KERN_ALERT);
+define_xfs_printk_level(xfs_crit, KERN_CRIT);
+define_xfs_printk_level(xfs_err, KERN_ERR);
+define_xfs_printk_level(xfs_warn, KERN_WARNING);
+define_xfs_printk_level(xfs_notice, KERN_NOTICE);
+define_xfs_printk_level(xfs_info, KERN_INFO);
+#ifdef DEBUG
+define_xfs_printk_level(xfs_debug, KERN_DEBUG);
+#endif
+
+int
+xfs_alert_tag(
+	const struct xfs_mount	*mp,
+	int			panic_tag,
+	const char		*fmt, ...)
+{
+	struct va_format	vaf;
+	va_list			args;
+	int			do_panic = 0;
+	int			r;
+
+	if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
+		xfs_printk(KERN_ALERT, mp,
+			"XFS: Transforming an alert into a BUG.");
+		do_panic = 1;
+	}
+
+	va_start(args, fmt);
+
+	vaf.fmt = fmt;
+	vaf.va = &args;
+
+	r = __xfs_printk(KERN_ALERT, mp, &vaf);
+	va_end(args);
+
+	BUG_ON(do_panic);
+
+	return r;
+}
+
+void
+assfail(char *expr, char *file, int line)
+{
+	xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
+		expr, file, line);
+	BUG();
+}
+
+void
+xfs_hex_dump(void *p, int length)
+{
+	print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
+}
diff --git a/fs/xfs/linux-2.6/xfs_message.h b/fs/xfs/linux-2.6/xfs_message.h
new file mode 100644
index 0000000..e77ffa1
--- /dev/null
+++ b/fs/xfs/linux-2.6/xfs_message.h
@@ -0,0 +1,38 @@
+#ifndef __XFS_MESSAGE_H
+#define __XFS_MESSAGE_H 1
+
+struct xfs_mount;
+
+extern int xfs_printk(const char *level, const struct xfs_mount *mp,
+                      const char *fmt, ...)
+        __attribute__ ((format (printf, 3, 4)));
+extern int xfs_emerg(const struct xfs_mount *mp, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int xfs_alert(const struct xfs_mount *mp, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int xfs_alert_tag(const struct xfs_mount *mp, int tag,
+			 const char *fmt, ...)
+        __attribute__ ((format (printf, 3, 4)));
+extern int xfs_crit(const struct xfs_mount *mp, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int xfs_err(const struct xfs_mount *mp, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int xfs_warn(const struct xfs_mount *mp, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int xfs_notice(const struct xfs_mount *mp, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int xfs_info(const struct xfs_mount *mp, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+
+#ifdef DEBUG
+extern int xfs_debug(const struct xfs_mount *mp, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+#else
+#define xfs_debug(mp, fmt, ...)	(0)
+#endif
+
+extern void assfail(char *expr, char *f, int l);
+
+extern void xfs_hex_dump(void *p, int length);
+
+#endif	/* __XFS_MESSAGE_H */
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 9731898..1ba5c45 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -173,6 +173,15 @@ xfs_parseargs(
 	__uint8_t		iosizelog = 0;
 
 	/*
+	 * set up the mount name first so all the errors will refer to the
+	 * correct device.
+	 */
+	mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL);
+	if (!mp->m_fsname)
+		return ENOMEM;
+	mp->m_fsname_len = strlen(mp->m_fsname) + 1;
+
+	/*
 	 * Copy binary VFS mount flags we are interested in.
 	 */
 	if (sb->s_flags & MS_RDONLY)
@@ -189,6 +198,7 @@ xfs_parseargs(
 	mp->m_flags |= XFS_MOUNT_BARRIER;
 	mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
 	mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
+	mp->m_flags |= XFS_MOUNT_DELAYLOG;
 
 	/*
 	 * These can be overridden by the mount option parsing.
@@ -207,24 +217,21 @@ xfs_parseargs(
 
 		if (!strcmp(this_char, MNTOPT_LOGBUFS)) {
 			if (!value || !*value) {
-				cmn_err(CE_WARN,
-					"XFS: %s option requires an argument",
+				xfs_warn(mp, "%s option requires an argument",
 					this_char);
 				return EINVAL;
 			}
 			mp->m_logbufs = simple_strtoul(value, &eov, 10);
 		} else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
 			if (!value || !*value) {
-				cmn_err(CE_WARN,
-					"XFS: %s option requires an argument",
+				xfs_warn(mp, "%s option requires an argument",
 					this_char);
 				return EINVAL;
 			}
 			mp->m_logbsize = suffix_strtoul(value, &eov, 10);
 		} else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
 			if (!value || !*value) {
-				cmn_err(CE_WARN,
-					"XFS: %s option requires an argument",
+				xfs_warn(mp, "%s option requires an argument",
 					this_char);
 				return EINVAL;
 			}
@@ -232,14 +239,12 @@ xfs_parseargs(
 			if (!mp->m_logname)
 				return ENOMEM;
 		} else if (!strcmp(this_char, MNTOPT_MTPT)) {
-			cmn_err(CE_WARN,
-				"XFS: %s option not allowed on this system",
+			xfs_warn(mp, "%s option not allowed on this system",
 				this_char);
 			return EINVAL;
 		} else if (!strcmp(this_char, MNTOPT_RTDEV)) {
 			if (!value || !*value) {
-				cmn_err(CE_WARN,
-					"XFS: %s option requires an argument",
+				xfs_warn(mp, "%s option requires an argument",
 					this_char);
 				return EINVAL;
 			}
@@ -248,8 +253,7 @@ xfs_parseargs(
 				return ENOMEM;
 		} else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
 			if (!value || !*value) {
-				cmn_err(CE_WARN,
-					"XFS: %s option requires an argument",
+				xfs_warn(mp, "%s option requires an argument",
 					this_char);
 				return EINVAL;
 			}
@@ -257,8 +261,7 @@ xfs_parseargs(
 			iosizelog = ffs(iosize) - 1;
 		} else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) {
 			if (!value || !*value) {
-				cmn_err(CE_WARN,
-					"XFS: %s option requires an argument",
+				xfs_warn(mp, "%s option requires an argument",
 					this_char);
 				return EINVAL;
 			}
@@ -280,16 +283,14 @@ xfs_parseargs(
 			mp->m_flags |= XFS_MOUNT_SWALLOC;
 		} else if (!strcmp(this_char, MNTOPT_SUNIT)) {
 			if (!value || !*value) {
-				cmn_err(CE_WARN,
-					"XFS: %s option requires an argument",
+				xfs_warn(mp, "%s option requires an argument",
 					this_char);
 				return EINVAL;
 			}
 			dsunit = simple_strtoul(value, &eov, 10);
 		} else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
 			if (!value || !*value) {
-				cmn_err(CE_WARN,
-					"XFS: %s option requires an argument",
+				xfs_warn(mp, "%s option requires an argument",
 					this_char);
 				return EINVAL;
 			}
@@ -297,8 +298,7 @@ xfs_parseargs(
 		} else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
 			mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
 #if !XFS_BIG_INUMS
-			cmn_err(CE_WARN,
-				"XFS: %s option not allowed on this system",
+			xfs_warn(mp, "%s option not allowed on this system",
 				this_char);
 			return EINVAL;
 #endif
@@ -356,20 +356,19 @@ xfs_parseargs(
 		} else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) {
 			mp->m_flags &= ~XFS_MOUNT_DELAYLOG;
 		} else if (!strcmp(this_char, "ihashsize")) {
-			cmn_err(CE_WARN,
-	"XFS: ihashsize no longer used, option is deprecated.");
+			xfs_warn(mp,
+	"ihashsize no longer used, option is deprecated.");
 		} else if (!strcmp(this_char, "osyncisdsync")) {
-			cmn_err(CE_WARN,
-	"XFS: osyncisdsync has no effect, option is deprecated.");
+			xfs_warn(mp,
+	"osyncisdsync has no effect, option is deprecated.");
 		} else if (!strcmp(this_char, "osyncisosync")) {
-			cmn_err(CE_WARN,
-	"XFS: osyncisosync has no effect, option is deprecated.");
+			xfs_warn(mp,
+	"osyncisosync has no effect, option is deprecated.");
 		} else if (!strcmp(this_char, "irixsgid")) {
-			cmn_err(CE_WARN,
-	"XFS: irixsgid is now a sysctl(2) variable, option is deprecated.");
+			xfs_warn(mp,
+	"irixsgid is now a sysctl(2) variable, option is deprecated.");
 		} else {
-			cmn_err(CE_WARN,
-				"XFS: unknown mount option [%s].", this_char);
+			xfs_warn(mp, "unknown mount option [%s].", this_char);
 			return EINVAL;
 		}
 	}
@@ -379,40 +378,37 @@ xfs_parseargs(
 	 */
 	if ((mp->m_flags & XFS_MOUNT_NORECOVERY) &&
 	    !(mp->m_flags & XFS_MOUNT_RDONLY)) {
-		cmn_err(CE_WARN, "XFS: no-recovery mounts must be read-only.");
+		xfs_warn(mp, "no-recovery mounts must be read-only.");
 		return EINVAL;
 	}
 
 	if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) {
-		cmn_err(CE_WARN,
-	"XFS: sunit and swidth options incompatible with the noalign option");
+		xfs_warn(mp,
+	"sunit and swidth options incompatible with the noalign option");
 		return EINVAL;
 	}
 
 #ifndef CONFIG_XFS_QUOTA
 	if (XFS_IS_QUOTA_RUNNING(mp)) {
-		cmn_err(CE_WARN,
-			"XFS: quota support not available in this kernel.");
+		xfs_warn(mp, "quota support not available in this kernel.");
 		return EINVAL;
 	}
 #endif
 
 	if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) &&
 	    (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) {
-		cmn_err(CE_WARN,
-			"XFS: cannot mount with both project and group quota");
+		xfs_warn(mp, "cannot mount with both project and group quota");
 		return EINVAL;
 	}
 
 	if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
-		cmn_err(CE_WARN,
-			"XFS: sunit and swidth must be specified together");
+		xfs_warn(mp, "sunit and swidth must be specified together");
 		return EINVAL;
 	}
 
 	if (dsunit && (dswidth % dsunit != 0)) {
-		cmn_err(CE_WARN,
-	"XFS: stripe width (%d) must be a multiple of the stripe unit (%d)",
+		xfs_warn(mp,
+	"stripe width (%d) must be a multiple of the stripe unit (%d)",
 			dswidth, dsunit);
 		return EINVAL;
 	}
@@ -438,8 +434,7 @@ done:
 	    mp->m_logbufs != 0 &&
 	    (mp->m_logbufs < XLOG_MIN_ICLOGS ||
 	     mp->m_logbufs > XLOG_MAX_ICLOGS)) {
-		cmn_err(CE_WARN,
-			"XFS: invalid logbufs value: %d [not %d-%d]",
+		xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
 			mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
 		return XFS_ERROR(EINVAL);
 	}
@@ -448,22 +443,16 @@ done:
 	    (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE ||
 	     mp->m_logbsize > XLOG_MAX_RECORD_BSIZE ||
 	     !is_power_of_2(mp->m_logbsize))) {
-		cmn_err(CE_WARN,
-	"XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
+		xfs_warn(mp,
+			"invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
 			mp->m_logbsize);
 		return XFS_ERROR(EINVAL);
 	}
 
-	mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL);
-	if (!mp->m_fsname)
-		return ENOMEM;
-	mp->m_fsname_len = strlen(mp->m_fsname) + 1;
-
 	if (iosizelog) {
 		if (iosizelog > XFS_MAX_IO_LOG ||
 		    iosizelog < XFS_MIN_IO_LOG) {
-			cmn_err(CE_WARN,
-		"XFS: invalid log iosize: %d [not %d-%d]",
+			xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
 				iosizelog, XFS_MIN_IO_LOG,
 				XFS_MAX_IO_LOG);
 			return XFS_ERROR(EINVAL);
@@ -610,7 +599,7 @@ xfs_blkdev_get(
 				    mp);
 	if (IS_ERR(*bdevp)) {
 		error = PTR_ERR(*bdevp);
-		printk("XFS: Invalid device [%s], error=%d\n", name, error);
+		xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error);
 	}
 
 	return -error;
@@ -664,23 +653,23 @@ xfs_mountfs_check_barriers(xfs_mount_t *mp)
 	int error;
 
 	if (mp->m_logdev_targp != mp->m_ddev_targp) {
-		xfs_fs_cmn_err(CE_NOTE, mp,
+		xfs_notice(mp,
 		  "Disabling barriers, not supported with external log device");
 		mp->m_flags &= ~XFS_MOUNT_BARRIER;
 		return;
 	}
 
 	if (xfs_readonly_buftarg(mp->m_ddev_targp)) {
-		xfs_fs_cmn_err(CE_NOTE, mp,
-		  "Disabling barriers, underlying device is readonly");
+		xfs_notice(mp,
+			"Disabling barriers, underlying device is readonly");
 		mp->m_flags &= ~XFS_MOUNT_BARRIER;
 		return;
 	}
 
 	error = xfs_barrier_test(mp);
 	if (error) {
-		xfs_fs_cmn_err(CE_NOTE, mp,
-		  "Disabling barriers, trial barrier write failed");
+		xfs_notice(mp,
+			"Disabling barriers, trial barrier write failed");
 		mp->m_flags &= ~XFS_MOUNT_BARRIER;
 		return;
 	}
@@ -743,8 +732,8 @@ xfs_open_devices(
 			goto out_close_logdev;
 
 		if (rtdev == ddev || rtdev == logdev) {
-			cmn_err(CE_WARN,
-	"XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
+			xfs_warn(mp,
+	"Cannot mount filesystem with identical rtdev and ddev/logdev.");
 			error = EINVAL;
 			goto out_close_rtdev;
 		}
@@ -1089,7 +1078,7 @@ xfs_fs_write_inode(
 			error = 0;
 			goto out_unlock;
 		}
-		error = xfs_iflush(ip, 0);
+		error = xfs_iflush(ip, SYNC_TRYLOCK);
 	}
 
  out_unlock:
@@ -1345,8 +1334,8 @@ xfs_fs_remount(
 			 * options that we can't actually change.
 			 */
 #if 0
-			printk(KERN_INFO
-	"XFS: mount option \"%s\" not supported for remount\n", p);
+			xfs_info(mp,
+		"mount option \"%s\" not supported for remount\n", p);
 			return -EINVAL;
 #else
 			break;
@@ -1367,8 +1356,7 @@ xfs_fs_remount(
 		if (mp->m_update_flags) {
 			error = xfs_mount_log_sb(mp, mp->m_update_flags);
 			if (error) {
-				cmn_err(CE_WARN,
-					"XFS: failed to write sb changes");
+				xfs_warn(mp, "failed to write sb changes");
 				return error;
 			}
 			mp->m_update_flags = 0;
@@ -1452,15 +1440,15 @@ xfs_finish_flags(
 			mp->m_logbsize = mp->m_sb.sb_logsunit;
 		} else if (mp->m_logbsize > 0 &&
 			   mp->m_logbsize < mp->m_sb.sb_logsunit) {
-			cmn_err(CE_WARN,
-	"XFS: logbuf size must be greater than or equal to log stripe size");
+			xfs_warn(mp,
+		"logbuf size must be greater than or equal to log stripe size");
 			return XFS_ERROR(EINVAL);
 		}
 	} else {
 		/* Fail a mount if the logbuf is larger than 32K */
 		if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) {
-			cmn_err(CE_WARN,
-	"XFS: logbuf size for version 1 logs must be 16K or 32K");
+			xfs_warn(mp,
+		"logbuf size for version 1 logs must be 16K or 32K");
 			return XFS_ERROR(EINVAL);
 		}
 	}
@@ -1477,8 +1465,8 @@ xfs_finish_flags(
 	 * prohibit r/w mounts of read-only filesystems
 	 */
 	if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
-		cmn_err(CE_WARN,
-	"XFS: cannot mount a read-only filesystem as read-write");
+		xfs_warn(mp,
+			"cannot mount a read-only filesystem as read-write");
 		return XFS_ERROR(EROFS);
 	}
 
@@ -1551,10 +1539,14 @@ xfs_fs_fill_super(
 	if (error)
 		goto out_free_sb;
 
-	error = xfs_mountfs(mp);
-	if (error)
-		goto out_filestream_unmount;
-
+	/*
+	 * we must configure the block size in the superblock before we run the
+	 * full mount process as the mount process can lookup and cache inodes.
+	 * For the same reason we must also initialise the syncd and register
+	 * the inode cache shrinker so that inodes can be reclaimed during
+	 * operations like a quotacheck that iterate all inodes in the
+	 * filesystem.
+	 */
 	sb->s_magic = XFS_SB_MAGIC;
 	sb->s_blocksize = mp->m_sb.sb_blocksize;
 	sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1;
@@ -1562,6 +1554,16 @@ xfs_fs_fill_super(
 	sb->s_time_gran = 1;
 	set_posix_acl_flag(sb);
 
+	error = xfs_syncd_init(mp);
+	if (error)
+		goto out_filestream_unmount;
+
+	xfs_inode_shrinker_register(mp);
+
+	error = xfs_mountfs(mp);
+	if (error)
+		goto out_syncd_stop;
+
 	root = igrab(VFS_I(mp->m_rootip));
 	if (!root) {
 		error = ENOENT;
@@ -1577,14 +1579,11 @@ xfs_fs_fill_super(
 		goto fail_vnrele;
 	}
 
-	error = xfs_syncd_init(mp);
-	if (error)
-		goto fail_vnrele;
-
-	xfs_inode_shrinker_register(mp);
-
 	return 0;
 
+ out_syncd_stop:
+	xfs_inode_shrinker_unregister(mp);
+	xfs_syncd_stop(mp);
  out_filestream_unmount:
 	xfs_filestream_unmount(mp);
  out_free_sb:
@@ -1608,6 +1607,9 @@ xfs_fs_fill_super(
 	}
 
  fail_unmount:
+	xfs_inode_shrinker_unregister(mp);
+	xfs_syncd_stop(mp);
+
 	/*
 	 * Blow away any referenced inode in the filestreams cache.
 	 * This can and will cause log traffic as inodes go inactive
diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index e22f005..594cd82 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/linux-2.6/xfs_sync.c
@@ -425,8 +425,7 @@ xfs_quiesce_attr(
 	/* Push the superblock and write an unmount record */
 	error = xfs_log_sbcount(mp, 1);
 	if (error)
-		xfs_fs_cmn_err(CE_WARN, mp,
-				"xfs_attr_quiesce: failed to log sb changes. "
+		xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. "
 				"Frozen image may not be consistent.");
 	xfs_log_unmount_write(mp);
 	xfs_unmountfs_writesb(mp);
@@ -762,8 +761,10 @@ xfs_reclaim_inode(
 	struct xfs_perag	*pag,
 	int			sync_mode)
 {
-	int	error = 0;
+	int	error;
 
+restart:
+	error = 0;
 	xfs_ilock(ip, XFS_ILOCK_EXCL);
 	if (!xfs_iflock_nowait(ip)) {
 		if (!(sync_mode & SYNC_WAIT))
@@ -789,9 +790,31 @@ xfs_reclaim_inode(
 	if (xfs_inode_clean(ip))
 		goto reclaim;
 
-	/* Now we have an inode that needs flushing */
-	error = xfs_iflush(ip, sync_mode);
+	/*
+	 * Now we have an inode that needs flushing.
+	 *
+	 * We do a nonblocking flush here even if we are doing a SYNC_WAIT
+	 * reclaim as we can deadlock with inode cluster removal.
+	 * xfs_ifree_cluster() can lock the inode buffer before it locks the
+	 * ip->i_lock, and we are doing the exact opposite here. As a result,
+	 * doing a blocking xfs_itobp() to get the cluster buffer will result
+	 * in an ABBA deadlock with xfs_ifree_cluster().
+	 *
+	 * As xfs_ifree_cluser() must gather all inodes that are active in the
+	 * cache to mark them stale, if we hit this case we don't actually want
+	 * to do IO here - we want the inode marked stale so we can simply
+	 * reclaim it. Hence if we get an EAGAIN error on a SYNC_WAIT flush,
+	 * just unlock the inode, back off and try again. Hopefully the next
+	 * pass through will see the stale flag set on the inode.
+	 */
+	error = xfs_iflush(ip, SYNC_TRYLOCK | sync_mode);
 	if (sync_mode & SYNC_WAIT) {
+		if (error == EAGAIN) {
+			xfs_iunlock(ip, XFS_ILOCK_EXCL);
+			/* backoff longer than in xfs_ifree_cluster */
+			delay(2);
+			goto restart;
+		}
 		xfs_iflock(ip);
 		goto reclaim;
 	}
@@ -806,7 +829,7 @@ xfs_reclaim_inode(
 	 * pass on the error.
 	 */
 	if (error && error != EAGAIN && !XFS_FORCED_SHUTDOWN(ip->i_mount)) {
-		xfs_fs_cmn_err(CE_WARN, ip->i_mount,
+		xfs_warn(ip->i_mount,
 			"inode 0x%llx background reclaim flush failed with %d",
 			(long long)ip->i_ino, error);
 	}
diff --git a/fs/xfs/linux-2.6/xfs_sysctl.c b/fs/xfs/linux-2.6/xfs_sysctl.c
index ee3cee0..ee2d2ad 100644
--- a/fs/xfs/linux-2.6/xfs_sysctl.c
+++ b/fs/xfs/linux-2.6/xfs_sysctl.c
@@ -37,7 +37,7 @@ xfs_stats_clear_proc_handler(
 	ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
 
 	if (!ret && write && *valp) {
-		printk("XFS Clearing xfsstats\n");
+		xfs_notice(NULL, "Clearing xfsstats");
 		for_each_possible_cpu(c) {
 			preempt_disable();
 			/* save vn_active, it's a universal truth! */
diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c
index d22aa31..7e24164 100644
--- a/fs/xfs/quota/xfs_dquot.c
+++ b/fs/xfs/quota/xfs_dquot.c
@@ -544,9 +544,10 @@ xfs_qm_dqtobp(
 	/*
 	 * A simple sanity check in case we got a corrupted dquot...
 	 */
-	if (xfs_qm_dqcheck(ddq, id, dqp->dq_flags & XFS_DQ_ALLTYPES,
+	error = xfs_qm_dqcheck(mp, ddq, id, dqp->dq_flags & XFS_DQ_ALLTYPES,
 			   flags & (XFS_QMOPT_DQREPAIR|XFS_QMOPT_DOWARN),
-			   "dqtobp")) {
+			   "dqtobp");
+	if (error) {
 		if (!(flags & XFS_QMOPT_DQREPAIR)) {
 			xfs_trans_brelse(tp, bp);
 			return XFS_ERROR(EIO);
@@ -827,7 +828,7 @@ xfs_qm_dqget(
 	if (xfs_do_dqerror) {
 		if ((xfs_dqerror_target == mp->m_ddev_targp) &&
 		    (xfs_dqreq_num++ % xfs_dqerror_mod) == 0) {
-			cmn_err(CE_DEBUG, "Returning error in dqget");
+			xfs_debug(mp, "Returning error in dqget");
 			return (EIO);
 		}
 	}
@@ -1207,8 +1208,9 @@ xfs_qm_dqflush(
 	/*
 	 * A simple sanity check in case we got a corrupted dquot..
 	 */
-	if (xfs_qm_dqcheck(&dqp->q_core, be32_to_cpu(ddqp->d_id), 0,
-			   XFS_QMOPT_DOWARN, "dqflush (incore copy)")) {
+	error = xfs_qm_dqcheck(mp, &dqp->q_core, be32_to_cpu(ddqp->d_id), 0,
+			   XFS_QMOPT_DOWARN, "dqflush (incore copy)");
+	if (error) {
 		xfs_buf_relse(bp);
 		xfs_dqfunlock(dqp);
 		xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
@@ -1391,8 +1393,8 @@ xfs_qm_dqpurge(
 		 */
 		error = xfs_qm_dqflush(dqp, SYNC_WAIT);
 		if (error)
-			xfs_fs_cmn_err(CE_WARN, mp,
-				"xfs_qm_dqpurge: dquot %p flush failed", dqp);
+			xfs_warn(mp, "%s: dquot %p flush failed",
+				__func__, dqp);
 		xfs_dqflock(dqp);
 	}
 	ASSERT(atomic_read(&dqp->q_pincount) == 0);
@@ -1425,36 +1427,38 @@ xfs_qm_dqpurge(
 void
 xfs_qm_dqprint(xfs_dquot_t *dqp)
 {
-	cmn_err(CE_DEBUG, "-----------KERNEL DQUOT----------------");
-	cmn_err(CE_DEBUG, "---- dquotID =  %d",
+	struct xfs_mount	*mp = dqp->q_mount;
+
+	xfs_debug(mp, "-----------KERNEL DQUOT----------------");
+	xfs_debug(mp, "---- dquotID =  %d",
 		(int)be32_to_cpu(dqp->q_core.d_id));
-	cmn_err(CE_DEBUG, "---- type    =  %s", DQFLAGTO_TYPESTR(dqp));
-	cmn_err(CE_DEBUG, "---- fs      =  0x%p", dqp->q_mount);
-	cmn_err(CE_DEBUG, "---- blkno   =  0x%x", (int) dqp->q_blkno);
-	cmn_err(CE_DEBUG, "---- boffset =  0x%x", (int) dqp->q_bufoffset);
-	cmn_err(CE_DEBUG, "---- blkhlimit =  %Lu (0x%x)",
+	xfs_debug(mp, "---- type    =  %s", DQFLAGTO_TYPESTR(dqp));
+	xfs_debug(mp, "---- fs      =  0x%p", dqp->q_mount);
+	xfs_debug(mp, "---- blkno   =  0x%x", (int) dqp->q_blkno);
+	xfs_debug(mp, "---- boffset =  0x%x", (int) dqp->q_bufoffset);
+	xfs_debug(mp, "---- blkhlimit =  %Lu (0x%x)",
 		be64_to_cpu(dqp->q_core.d_blk_hardlimit),
 		(int)be64_to_cpu(dqp->q_core.d_blk_hardlimit));
-	cmn_err(CE_DEBUG, "---- blkslimit =  %Lu (0x%x)",
+	xfs_debug(mp, "---- blkslimit =  %Lu (0x%x)",
 		be64_to_cpu(dqp->q_core.d_blk_softlimit),
 		(int)be64_to_cpu(dqp->q_core.d_blk_softlimit));
-	cmn_err(CE_DEBUG, "---- inohlimit =  %Lu (0x%x)",
+	xfs_debug(mp, "---- inohlimit =  %Lu (0x%x)",
 		be64_to_cpu(dqp->q_core.d_ino_hardlimit),
 		(int)be64_to_cpu(dqp->q_core.d_ino_hardlimit));
-	cmn_err(CE_DEBUG, "---- inoslimit =  %Lu (0x%x)",
+	xfs_debug(mp, "---- inoslimit =  %Lu (0x%x)",
 		be64_to_cpu(dqp->q_core.d_ino_softlimit),
 		(int)be64_to_cpu(dqp->q_core.d_ino_softlimit));
-	cmn_err(CE_DEBUG, "---- bcount  =  %Lu (0x%x)",
+	xfs_debug(mp, "---- bcount  =  %Lu (0x%x)",
 		be64_to_cpu(dqp->q_core.d_bcount),
 		(int)be64_to_cpu(dqp->q_core.d_bcount));
-	cmn_err(CE_DEBUG, "---- icount  =  %Lu (0x%x)",
+	xfs_debug(mp, "---- icount  =  %Lu (0x%x)",
 		be64_to_cpu(dqp->q_core.d_icount),
 		(int)be64_to_cpu(dqp->q_core.d_icount));
-	cmn_err(CE_DEBUG, "---- btimer  =  %d",
+	xfs_debug(mp, "---- btimer  =  %d",
 		(int)be32_to_cpu(dqp->q_core.d_btimer));
-	cmn_err(CE_DEBUG, "---- itimer  =  %d",
+	xfs_debug(mp, "---- itimer  =  %d",
 		(int)be32_to_cpu(dqp->q_core.d_itimer));
-	cmn_err(CE_DEBUG, "---------------------------");
+	xfs_debug(mp, "---------------------------");
 }
 #endif
 
diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/quota/xfs_dquot_item.c
index 2a1f3dc..9e0e2fa 100644
--- a/fs/xfs/quota/xfs_dquot_item.c
+++ b/fs/xfs/quota/xfs_dquot_item.c
@@ -136,9 +136,8 @@ xfs_qm_dquot_logitem_push(
 	 */
 	error = xfs_qm_dqflush(dqp, 0);
 	if (error)
-		xfs_fs_cmn_err(CE_WARN, dqp->q_mount,
-			"xfs_qm_dquot_logitem_push: push error %d on dqp %p",
-			error, dqp);
+		xfs_warn(dqp->q_mount, "%s: push error %d on dqp %p",
+			__func__, error, dqp);
 	xfs_dqunlock(dqp);
 }
 
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c
index 206a281..254ee06 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/quota/xfs_qm.c
@@ -80,7 +80,7 @@ xfs_qm_dquot_list_print(
 	int		i = 0;
 
 	list_for_each_entry(dqp, &mp->m_quotainfo->qi_dqlist_lock, qi_mplist) {
-		cmn_err(CE_DEBUG, "   %d. \"%d (%s)\"   "
+		xfs_debug(mp, "   %d. \"%d (%s)\"   "
 				  "bcnt = %lld, icnt = %lld, refs = %d",
 			i++, be32_to_cpu(dqp->q_core.d_id),
 			DQFLAGTO_TYPESTR(dqp),
@@ -205,7 +205,7 @@ xfs_qm_destroy(
 	list_for_each_entry_safe(dqp, n, &xqm->qm_dqfrlist, q_freelist) {
 		xfs_dqlock(dqp);
 #ifdef QUOTADEBUG
-		cmn_err(CE_DEBUG, "FREELIST destroy 0x%p", dqp);
+		xfs_debug(dqp->q_mount, "FREELIST destroy 0x%p", dqp);
 #endif
 		list_del_init(&dqp->q_freelist);
 		xfs_Gqm->qm_dqfrlist_cnt--;
@@ -341,9 +341,7 @@ xfs_qm_mount_quotas(
 	 * quotas immediately.
 	 */
 	if (mp->m_sb.sb_rextents) {
-		cmn_err(CE_NOTE,
-			"Cannot turn on quotas for realtime filesystem %s",
-			mp->m_fsname);
+		xfs_notice(mp, "Cannot turn on quotas for realtime filesystem");
 		mp->m_qflags = 0;
 		goto write_changes;
 	}
@@ -402,14 +400,13 @@ xfs_qm_mount_quotas(
 			 * off, but the on disk superblock doesn't know that !
 			 */
 			ASSERT(!(XFS_IS_QUOTA_RUNNING(mp)));
-			xfs_fs_cmn_err(CE_ALERT, mp,
-				"XFS mount_quotas: Superblock update failed!");
+			xfs_alert(mp, "%s: Superblock update failed!",
+				__func__);
 		}
 	}
 
 	if (error) {
-		xfs_fs_cmn_err(CE_WARN, mp,
-			"Failed to initialize disk quotas.");
+		xfs_warn(mp, "Failed to initialize disk quotas.");
 		return;
 	}
 
@@ -1230,13 +1227,6 @@ xfs_qm_qino_alloc(
 	}
 
 	/*
-	 * Keep an extra reference to this quota inode. This inode is
-	 * locked exclusively and joined to the transaction already.
-	 */
-	ASSERT(xfs_isilocked(*ip, XFS_ILOCK_EXCL));
-	IHOLD(*ip);
-
-	/*
 	 * Make the changes in the superblock, and log those too.
 	 * sbfields arg may contain fields other than *QUOTINO;
 	 * VERSIONNUM for example.
@@ -1264,7 +1254,7 @@ xfs_qm_qino_alloc(
 	xfs_mod_sb(tp, sbfields);
 
 	if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) {
-		xfs_fs_cmn_err(CE_ALERT, mp, "XFS qino_alloc failed!");
+		xfs_alert(mp, "%s failed (error %d)!", __func__, error);
 		return error;
 	}
 	return 0;
@@ -1299,7 +1289,7 @@ xfs_qm_reset_dqcounts(
 		 * output any warnings because it's perfectly possible to
 		 * find uninitialised dquot blks. See comment in xfs_qm_dqcheck.
 		 */
-		(void) xfs_qm_dqcheck(ddq, id+j, type, XFS_QMOPT_DQREPAIR,
+		(void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR,
 				      "xfs_quotacheck");
 		ddq->d_bcount = 0;
 		ddq->d_icount = 0;
@@ -1676,7 +1666,7 @@ xfs_qm_quotacheck(
 	 */
 	ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist));
 
-	cmn_err(CE_NOTE, "XFS quotacheck %s: Please wait.", mp->m_fsname);
+	xfs_notice(mp, "Quotacheck needed: Please wait.");
 
 	/*
 	 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
@@ -1754,9 +1744,9 @@ xfs_qm_quotacheck(
 
  error_return:
 	if (error) {
-		cmn_err(CE_WARN, "XFS quotacheck %s: Unsuccessful (Error %d): "
-			"Disabling quotas.",
-			mp->m_fsname, error);
+		xfs_warn(mp,
+	"Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
+			error);
 		/*
 		 * We must turn off quotas.
 		 */
@@ -1764,12 +1754,11 @@ xfs_qm_quotacheck(
 		ASSERT(xfs_Gqm != NULL);
 		xfs_qm_destroy_quotainfo(mp);
 		if (xfs_mount_reset_sbqflags(mp)) {
-			cmn_err(CE_WARN, "XFS quotacheck %s: "
-				"Failed to reset quota flags.", mp->m_fsname);
+			xfs_warn(mp,
+				"Quotacheck: Failed to reset quota flags.");
 		}
-	} else {
-		cmn_err(CE_NOTE, "XFS quotacheck %s: Done.", mp->m_fsname);
-	}
+	} else
+		xfs_notice(mp, "Quotacheck: Done.");
 	return (error);
 }
 
@@ -1937,8 +1926,8 @@ again:
 			 */
 			error = xfs_qm_dqflush(dqp, 0);
 			if (error) {
-				xfs_fs_cmn_err(CE_WARN, mp,
-			"xfs_qm_dqreclaim: dquot %p flush failed", dqp);
+				xfs_warn(mp, "%s: dquot %p flush failed",
+					__func__, dqp);
 			}
 			goto dqunlock;
 		}
@@ -2115,7 +2104,7 @@ xfs_qm_write_sb_changes(
 	int		error;
 
 #ifdef QUOTADEBUG
-	cmn_err(CE_NOTE, "Writing superblock quota changes :%s", mp->m_fsname);
+	xfs_notice(mp, "Writing superblock quota changes");
 #endif
 	tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE);
 	if ((error = xfs_trans_reserve(tp, 0,
diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c
index 45b5cb1..774d7ec 100644
--- a/fs/xfs/quota/xfs_qm_bhv.c
+++ b/fs/xfs/quota/xfs_qm_bhv.c
@@ -119,8 +119,7 @@ xfs_qm_newmount(
 	     (gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) ||
 	    (!gquotaondisk &&  XFS_IS_OQUOTA_ON(mp)))  &&
 	    xfs_dev_is_read_only(mp, "changing quota state")) {
-		cmn_err(CE_WARN,
-			"XFS: please mount with%s%s%s%s.",
+		xfs_warn(mp, "please mount with%s%s%s%s.",
 			(!quotaondisk ? "out quota" : ""),
 			(uquotaondisk ? " usrquota" : ""),
 			(pquotaondisk ? " prjquota" : ""),
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c
index bdebc18..c82f067 100644
--- a/fs/xfs/quota/xfs_qm_syscalls.c
+++ b/fs/xfs/quota/xfs_qm_syscalls.c
@@ -41,12 +41,6 @@
 #include "xfs_qm.h"
 #include "xfs_trace.h"
 
-#ifdef DEBUG
-# define qdprintk(s, args...)	cmn_err(CE_DEBUG, s, ## args)
-#else
-# define qdprintk(s, args...)	do { } while (0)
-#endif
-
 STATIC int	xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
 STATIC int	xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
 					uint);
@@ -294,7 +288,8 @@ xfs_qm_scall_trunc_qfiles(
 	int		error = 0, error2 = 0;
 
 	if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) {
-		qdprintk("qtrunc flags=%x m_qflags=%x\n", flags, mp->m_qflags);
+		xfs_debug(mp, "%s: flags=%x m_qflags=%x\n",
+			__func__, flags, mp->m_qflags);
 		return XFS_ERROR(EINVAL);
 	}
 
@@ -331,7 +326,8 @@ xfs_qm_scall_quotaon(
 	sbflags = 0;
 
 	if (flags == 0) {
-		qdprintk("quotaon: zero flags, m_qflags=%x\n", mp->m_qflags);
+		xfs_debug(mp, "%s: zero flags, m_qflags=%x\n",
+			__func__, mp->m_qflags);
 		return XFS_ERROR(EINVAL);
 	}
 
@@ -352,8 +348,9 @@ xfs_qm_scall_quotaon(
 	    (flags & XFS_GQUOTA_ACCT) == 0 &&
 	    (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
 	    (flags & XFS_OQUOTA_ENFD))) {
-		qdprintk("Can't enforce without acct, flags=%x sbflags=%x\n",
-			flags, mp->m_sb.sb_qflags);
+		xfs_debug(mp,
+			"%s: Can't enforce without acct, flags=%x sbflags=%x\n",
+			__func__, flags, mp->m_sb.sb_qflags);
 		return XFS_ERROR(EINVAL);
 	}
 	/*
@@ -541,7 +538,7 @@ xfs_qm_scall_setqlim(
 			q->qi_bsoftlimit = soft;
 		}
 	} else {
-		qdprintk("blkhard %Ld < blksoft %Ld\n", hard, soft);
+		xfs_debug(mp, "blkhard %Ld < blksoft %Ld\n", hard, soft);
 	}
 	hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
 		(xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
@@ -557,7 +554,7 @@ xfs_qm_scall_setqlim(
 			q->qi_rtbsoftlimit = soft;
 		}
 	} else {
-		qdprintk("rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
+		xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
 	}
 
 	hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
@@ -574,7 +571,7 @@ xfs_qm_scall_setqlim(
 			q->qi_isoftlimit = soft;
 		}
 	} else {
-		qdprintk("ihard %Ld < isoft %Ld\n", hard, soft);
+		xfs_debug(mp, "ihard %Ld < isoft %Ld\n", hard, soft);
 	}
 
 	/*
@@ -939,10 +936,11 @@ struct mutex  qcheck_lock;
 #define DQTEST_LIST_PRINT(l, NXT, title) \
 { \
 	  xfs_dqtest_t	*dqp; int i = 0;\
-	  cmn_err(CE_DEBUG, "%s (#%d)", title, (int) (l)->qh_nelems); \
+	  xfs_debug(NULL, "%s (#%d)", title, (int) (l)->qh_nelems); \
 	  for (dqp = (xfs_dqtest_t *)(l)->qh_next; dqp != NULL; \
 	       dqp = (xfs_dqtest_t *)dqp->NXT) { \
-		cmn_err(CE_DEBUG, "  %d. \"%d (%s)\"  bcnt = %d, icnt = %d", \
+		xfs_debug(dqp->q_mount,		\
+			"  %d. \"%d (%s)\"  bcnt = %d, icnt = %d", \
 			 ++i, dqp->d_id, DQFLAGTO_TYPESTR(dqp),	     \
 			 dqp->d_bcount, dqp->d_icount); } \
 }
@@ -966,16 +964,17 @@ xfs_qm_hashinsert(xfs_dqhash_t *h, xfs_dqtest_t *dqp)
 }
 STATIC void
 xfs_qm_dqtest_print(
-	xfs_dqtest_t	*d)
+	struct xfs_mount	*mp,
+	struct dqtest		*d)
 {
-	cmn_err(CE_DEBUG, "-----------DQTEST DQUOT----------------");
-	cmn_err(CE_DEBUG, "---- dquot ID = %d", d->d_id);
-	cmn_err(CE_DEBUG, "---- fs       = 0x%p", d->q_mount);
-	cmn_err(CE_DEBUG, "---- bcount   = %Lu (0x%x)",
+	xfs_debug(mp, "-----------DQTEST DQUOT----------------");
+	xfs_debug(mp, "---- dquot ID = %d", d->d_id);
+	xfs_debug(mp, "---- fs       = 0x%p", d->q_mount);
+	xfs_debug(mp, "---- bcount   = %Lu (0x%x)",
 		d->d_bcount, (int)d->d_bcount);
-	cmn_err(CE_DEBUG, "---- icount   = %Lu (0x%x)",
+	xfs_debug(mp, "---- icount   = %Lu (0x%x)",
 		d->d_icount, (int)d->d_icount);
-	cmn_err(CE_DEBUG, "---------------------------");
+	xfs_debug(mp, "---------------------------");
 }
 
 STATIC void
@@ -989,12 +988,14 @@ xfs_qm_dqtest_failed(
 {
 	qmtest_nfails++;
 	if (error)
-		cmn_err(CE_DEBUG, "quotacheck failed id=%d, err=%d\nreason: %s",
-		       d->d_id, error, reason);
+		xfs_debug(dqp->q_mount,
+			"quotacheck failed id=%d, err=%d\nreason: %s",
+			d->d_id, error, reason);
 	else
-		cmn_err(CE_DEBUG, "quotacheck failed id=%d (%s) [%d != %d]",
-		       d->d_id, reason, (int)a, (int)b);
-	xfs_qm_dqtest_print(d);
+		xfs_debug(dqp->q_mount,
+			"quotacheck failed id=%d (%s) [%d != %d]",
+			d->d_id, reason, (int)a, (int)b);
+	xfs_qm_dqtest_print(dqp->q_mount, d);
 	if (dqp)
 		xfs_qm_dqprint(dqp);
 }
@@ -1021,9 +1022,9 @@ xfs_dqtest_cmp2(
 	    be64_to_cpu(dqp->q_core.d_bcount) >=
 	    be64_to_cpu(dqp->q_core.d_blk_softlimit)) {
 		if (!dqp->q_core.d_btimer && dqp->q_core.d_id) {
-			cmn_err(CE_DEBUG,
-				"%d [%s] [0x%p] BLK TIMER NOT STARTED",
-				d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
+			xfs_debug(dqp->q_mount,
+				"%d [%s] BLK TIMER NOT STARTED",
+				d->d_id, DQFLAGTO_TYPESTR(d));
 			err++;
 		}
 	}
@@ -1031,16 +1032,16 @@ xfs_dqtest_cmp2(
 	    be64_to_cpu(dqp->q_core.d_icount) >=
 	    be64_to_cpu(dqp->q_core.d_ino_softlimit)) {
 		if (!dqp->q_core.d_itimer && dqp->q_core.d_id) {
-			cmn_err(CE_DEBUG,
-				"%d [%s] [0x%p] INO TIMER NOT STARTED",
-				d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
+			xfs_debug(dqp->q_mount,
+				"%d [%s] INO TIMER NOT STARTED",
+				d->d_id, DQFLAGTO_TYPESTR(d));
 			err++;
 		}
 	}
 #ifdef QUOTADEBUG
 	if (!err) {
-		cmn_err(CE_DEBUG, "%d [%s] [0x%p] qchecked",
-			d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
+		xfs_debug(dqp->q_mount, "%d [%s] qchecked",
+			d->d_id, DQFLAGTO_TYPESTR(d));
 	}
 #endif
 	return (err);
@@ -1137,8 +1138,8 @@ xfs_qm_internalqcheck_adjust(
 
 	if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) {
 		*res = BULKSTAT_RV_NOTHING;
-		qdprintk("internalqcheck: ino=%llu, uqino=%llu, gqino=%llu\n",
-			(unsigned long long) ino,
+		xfs_debug(mp, "%s: ino=%llu, uqino=%llu, gqino=%llu\n",
+			__func__, (unsigned long long) ino,
 			(unsigned long long) mp->m_sb.sb_uquotino,
 			(unsigned long long) mp->m_sb.sb_gquotino);
 		return XFS_ERROR(EINVAL);
@@ -1223,12 +1224,12 @@ xfs_qm_internalqcheck(
 				 xfs_qm_internalqcheck_adjust,
 				 0, NULL, &done);
 		if (error) {
-			cmn_err(CE_DEBUG, "Bulkstat returned error 0x%x", error);
+			xfs_debug(mp, "Bulkstat returned error 0x%x", error);
 			break;
 		}
 	} while (!done);
 
-	cmn_err(CE_DEBUG, "Checking results against system dquots");
+	xfs_debug(mp, "Checking results against system dquots");
 	for (i = 0; i < qmtest_hashmask; i++) {
 		xfs_dqtest_t	*d, *n;
 		xfs_dqhash_t	*h;
@@ -1246,10 +1247,10 @@ xfs_qm_internalqcheck(
 	}
 
 	if (qmtest_nfails) {
-		cmn_err(CE_DEBUG, "******** quotacheck failed  ********");
-		cmn_err(CE_DEBUG, "failures = %d", qmtest_nfails);
+		xfs_debug(mp, "******** quotacheck failed  ********");
+		xfs_debug(mp, "failures = %d", qmtest_nfails);
 	} else {
-		cmn_err(CE_DEBUG, "******** quotacheck successful! ********");
+		xfs_debug(mp, "******** quotacheck successful! ********");
 	}
 	kmem_free(qmtest_udqtab);
 	kmem_free(qmtest_gdqtab);
diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/quota/xfs_trans_dquot.c
index 7de91d1..2a36487 100644
--- a/fs/xfs/quota/xfs_trans_dquot.c
+++ b/fs/xfs/quota/xfs_trans_dquot.c
@@ -643,8 +643,9 @@ xfs_trans_dqresv(
 	     (XFS_IS_OQUOTA_ENFORCED(dqp->q_mount) &&
 	      (XFS_QM_ISPDQ(dqp) || XFS_QM_ISGDQ(dqp))))) {
 #ifdef QUOTADEBUG
-		cmn_err(CE_DEBUG, "BLK Res: nblks=%ld + resbcount=%Ld"
-			  " > hardlimit=%Ld?", nblks, *resbcountp, hardlimit);
+		xfs_debug(mp,
+			"BLK Res: nblks=%ld + resbcount=%Ld > hardlimit=%Ld?",
+			nblks, *resbcountp, hardlimit);
 #endif
 		if (nblks > 0) {
 			/*
diff --git a/fs/xfs/support/debug.c b/fs/xfs/support/debug.c
deleted file mode 100644
index 0df8889..0000000
--- a/fs/xfs/support/debug.c
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
- * All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write the Free Software Foundation,
- * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- */
-#include <xfs.h>
-#include "debug.h"
-
-/* xfs_mount.h drags a lot of crap in, sorry.. */
-#include "xfs_sb.h"
-#include "xfs_inum.h"
-#include "xfs_ag.h"
-#include "xfs_mount.h"
-#include "xfs_error.h"
-
-void
-cmn_err(
-	const char	*lvl,
-	const char	*fmt,
-	...)
-{
-	struct va_format vaf;
-	va_list		args;
-
-	va_start(args, fmt);
-	vaf.fmt = fmt;
-	vaf.va = &args;
-
-	printk("%s%pV", lvl, &vaf);
-	va_end(args);
-
-	BUG_ON(strncmp(lvl, KERN_EMERG, strlen(KERN_EMERG)) == 0);
-}
-
-void
-xfs_fs_cmn_err(
-	const char		*lvl,
-	struct xfs_mount	*mp,
-	const char		*fmt,
-	...)
-{
-	struct va_format	vaf;
-	va_list			args;
-
-	va_start(args, fmt);
-	vaf.fmt = fmt;
-	vaf.va = &args;
-
-	printk("%sFilesystem %s: %pV", lvl, mp->m_fsname, &vaf);
-	va_end(args);
-
-	BUG_ON(strncmp(lvl, KERN_EMERG, strlen(KERN_EMERG)) == 0);
-}
-
-/* All callers to xfs_cmn_err use CE_ALERT, so don't bother testing lvl */
-void
-xfs_cmn_err(
-	int			panic_tag,
-	const char		*lvl,
-	struct xfs_mount	*mp,
-	const char		*fmt,
-	...)
-{
-	struct va_format	vaf;
-	va_list			args;
-	int			do_panic = 0;
-
-	if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
-		printk(KERN_ALERT "XFS: Transforming an alert into a BUG.");
-		do_panic = 1;
-	}
-
-	va_start(args, fmt);
-	vaf.fmt = fmt;
-	vaf.va = &args;
-
-	printk(KERN_ALERT "Filesystem %s: %pV", mp->m_fsname, &vaf);
-	va_end(args);
-
-	BUG_ON(do_panic);
-}
-
-void
-assfail(char *expr, char *file, int line)
-{
-	printk(KERN_CRIT "Assertion failed: %s, file: %s, line: %d\n", expr,
-	       file, line);
-	BUG();
-}
-
-void
-xfs_hex_dump(void *p, int length)
-{
-	print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
-}
diff --git a/fs/xfs/support/debug.h b/fs/xfs/support/debug.h
deleted file mode 100644
index 05699f6..0000000
--- a/fs/xfs/support/debug.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2000-2005 Silicon Graphics, Inc.
- * All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write the Free Software Foundation,
- * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- */
-#ifndef	__XFS_SUPPORT_DEBUG_H__
-#define	__XFS_SUPPORT_DEBUG_H__
-
-#include <stdarg.h>
-
-struct xfs_mount;
-
-#define CE_DEBUG        KERN_DEBUG
-#define CE_CONT         KERN_INFO
-#define CE_NOTE         KERN_NOTICE
-#define CE_WARN         KERN_WARNING
-#define CE_ALERT        KERN_ALERT
-#define CE_PANIC        KERN_EMERG
-
-void cmn_err(const char *lvl, const char *fmt, ...)
-		__attribute__ ((format (printf, 2, 3)));
-void xfs_fs_cmn_err( const char *lvl, struct xfs_mount *mp,
-		const char *fmt, ...) __attribute__ ((format (printf, 3, 4)));
-void xfs_cmn_err( int panic_tag, const char *lvl, struct xfs_mount *mp,
-		const char *fmt, ...) __attribute__ ((format (printf, 4, 5)));
-
-extern void assfail(char *expr, char *f, int l);
-
-#define ASSERT_ALWAYS(expr)	\
-	(unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
-
-#ifndef DEBUG
-#define ASSERT(expr)	((void)0)
-
-#ifndef STATIC
-# define STATIC static noinline
-#endif
-
-#else /* DEBUG */
-
-#define ASSERT(expr)	\
-	(unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
-
-#ifndef STATIC
-# define STATIC noinline
-#endif
-
-#endif /* DEBUG */
-#endif  /* __XFS_SUPPORT_DEBUG_H__ */
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index f322798..4bc3c64 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -147,10 +147,9 @@ xfs_alloc_get_rec(
  */
 STATIC void
 xfs_alloc_compute_aligned(
+	xfs_alloc_arg_t	*args,		/* allocation argument structure */
 	xfs_agblock_t	foundbno,	/* starting block in found extent */
 	xfs_extlen_t	foundlen,	/* length in found extent */
-	xfs_extlen_t	alignment,	/* alignment for allocation */
-	xfs_extlen_t	minlen,		/* minimum length for allocation */
 	xfs_agblock_t	*resbno,	/* result block number */
 	xfs_extlen_t	*reslen)	/* result length */
 {
@@ -158,8 +157,8 @@ xfs_alloc_compute_aligned(
 	xfs_extlen_t	diff;
 	xfs_extlen_t	len;
 
-	if (alignment > 1 && foundlen >= minlen) {
-		bno = roundup(foundbno, alignment);
+	if (args->alignment > 1 && foundlen >= args->minlen) {
+		bno = roundup(foundbno, args->alignment);
 		diff = bno - foundbno;
 		len = diff >= foundlen ? 0 : foundlen - diff;
 	} else {
@@ -464,6 +463,27 @@ xfs_alloc_read_agfl(
 	return 0;
 }
 
+STATIC int
+xfs_alloc_update_counters(
+	struct xfs_trans	*tp,
+	struct xfs_perag	*pag,
+	struct xfs_buf		*agbp,
+	long			len)
+{
+	struct xfs_agf		*agf = XFS_BUF_TO_AGF(agbp);
+
+	pag->pagf_freeblks += len;
+	be32_add_cpu(&agf->agf_freeblks, len);
+
+	xfs_trans_agblocks_delta(tp, len);
+	if (unlikely(be32_to_cpu(agf->agf_freeblks) >
+		     be32_to_cpu(agf->agf_length)))
+		return EFSCORRUPTED;
+
+	xfs_alloc_log_agf(tp, agbp, XFS_AGF_FREEBLKS);
+	return 0;
+}
+
 /*
  * Allocation group level functions.
  */
@@ -505,49 +525,44 @@ xfs_alloc_ag_vextent(
 		ASSERT(0);
 		/* NOTREACHED */
 	}
-	if (error)
+
+	if (error || args->agbno == NULLAGBLOCK)
 		return error;
-	/*
-	 * If the allocation worked, need to change the agf structure
-	 * (and log it), and the superblock.
-	 */
-	if (args->agbno != NULLAGBLOCK) {
-		xfs_agf_t	*agf;	/* allocation group freelist header */
-		long		slen = (long)args->len;
 
-		ASSERT(args->len >= args->minlen && args->len <= args->maxlen);
-		ASSERT(!(args->wasfromfl) || !args->isfl);
-		ASSERT(args->agbno % args->alignment == 0);
-		if (!(args->wasfromfl)) {
-
-			agf = XFS_BUF_TO_AGF(args->agbp);
-			be32_add_cpu(&agf->agf_freeblks, -(args->len));
-			xfs_trans_agblocks_delta(args->tp,
-						 -((long)(args->len)));
-			args->pag->pagf_freeblks -= args->len;
-			ASSERT(be32_to_cpu(agf->agf_freeblks) <=
-				be32_to_cpu(agf->agf_length));
-			xfs_alloc_log_agf(args->tp, args->agbp,
-						XFS_AGF_FREEBLKS);
-			/*
-			 * Search the busylist for these blocks and mark the
-			 * transaction as synchronous if blocks are found. This
-			 * avoids the need to block due to a synchronous log
-			 * force to ensure correct ordering as the synchronous
-			 * transaction will guarantee that for us.
-			 */
-			if (xfs_alloc_busy_search(args->mp, args->agno,
-						args->agbno, args->len))
-				xfs_trans_set_sync(args->tp);
-		}
-		if (!args->isfl)
-			xfs_trans_mod_sb(args->tp,
-				args->wasdel ? XFS_TRANS_SB_RES_FDBLOCKS :
-					XFS_TRANS_SB_FDBLOCKS, -slen);
-		XFS_STATS_INC(xs_allocx);
-		XFS_STATS_ADD(xs_allocb, args->len);
+	ASSERT(args->len >= args->minlen);
+	ASSERT(args->len <= args->maxlen);
+	ASSERT(!args->wasfromfl || !args->isfl);
+	ASSERT(args->agbno % args->alignment == 0);
+
+	if (!args->wasfromfl) {
+		error = xfs_alloc_update_counters(args->tp, args->pag,
+						  args->agbp,
+						  -((long)(args->len)));
+		if (error)
+			return error;
+
+		/*
+		 * Search the busylist for these blocks and mark the
+		 * transaction as synchronous if blocks are found. This
+		 * avoids the need to block due to a synchronous log
+		 * force to ensure correct ordering as the synchronous
+		 * transaction will guarantee that for us.
+		 */
+		if (xfs_alloc_busy_search(args->mp, args->agno,
+					args->agbno, args->len))
+			xfs_trans_set_sync(args->tp);
 	}
-	return 0;
+
+	if (!args->isfl) {
+		xfs_trans_mod_sb(args->tp, args->wasdel ?
+				 XFS_TRANS_SB_RES_FDBLOCKS :
+				 XFS_TRANS_SB_FDBLOCKS,
+				 -((long)(args->len)));
+	}
+
+	XFS_STATS_INC(xs_allocx);
+	XFS_STATS_ADD(xs_allocb, args->len);
+	return error;
 }
 
 /*
@@ -693,8 +708,7 @@ xfs_alloc_find_best_extent(
 		if (error)
 			goto error0;
 		XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
-		xfs_alloc_compute_aligned(*sbno, *slen, args->alignment,
-					  args->minlen, &bno, slena);
+		xfs_alloc_compute_aligned(args, *sbno, *slen, &bno, slena);
 
 		/*
 		 * The good extent is closer than this one.
@@ -866,8 +880,8 @@ xfs_alloc_ag_vextent_near(
 			if ((error = xfs_alloc_get_rec(cnt_cur, &ltbno, &ltlen, &i)))
 				goto error0;
 			XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
-			xfs_alloc_compute_aligned(ltbno, ltlen, args->alignment,
-					args->minlen, &ltbnoa, &ltlena);
+			xfs_alloc_compute_aligned(args, ltbno, ltlen,
+						  &ltbnoa, &ltlena);
 			if (ltlena < args->minlen)
 				continue;
 			args->len = XFS_EXTLEN_MIN(ltlena, args->maxlen);
@@ -987,8 +1001,8 @@ xfs_alloc_ag_vextent_near(
 			if ((error = xfs_alloc_get_rec(bno_cur_lt, &ltbno, &ltlen, &i)))
 				goto error0;
 			XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
-			xfs_alloc_compute_aligned(ltbno, ltlen, args->alignment,
-					args->minlen, &ltbnoa, &ltlena);
+			xfs_alloc_compute_aligned(args, ltbno, ltlen,
+						  &ltbnoa, &ltlena);
 			if (ltlena >= args->minlen)
 				break;
 			if ((error = xfs_btree_decrement(bno_cur_lt, 0, &i)))
@@ -1003,8 +1017,8 @@ xfs_alloc_ag_vextent_near(
 			if ((error = xfs_alloc_get_rec(bno_cur_gt, &gtbno, &gtlen, &i)))
 				goto error0;
 			XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
-			xfs_alloc_compute_aligned(gtbno, gtlen, args->alignment,
-					args->minlen, &gtbnoa, &gtlena);
+			xfs_alloc_compute_aligned(args, gtbno, gtlen,
+						  &gtbnoa, &gtlena);
 			if (gtlena >= args->minlen)
 				break;
 			if ((error = xfs_btree_increment(bno_cur_gt, 0, &i)))
@@ -1183,8 +1197,7 @@ xfs_alloc_ag_vextent_size(
 	 * once aligned; if not, we search left for something better.
 	 * This can't happen in the second case above.
 	 */
-	xfs_alloc_compute_aligned(fbno, flen, args->alignment, args->minlen,
-		&rbno, &rlen);
+	xfs_alloc_compute_aligned(args, fbno, flen, &rbno, &rlen);
 	rlen = XFS_EXTLEN_MIN(args->maxlen, rlen);
 	XFS_WANT_CORRUPTED_GOTO(rlen == 0 ||
 			(rlen <= flen && rbno + rlen <= fbno + flen), error0);
@@ -1209,8 +1222,8 @@ xfs_alloc_ag_vextent_size(
 			XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
 			if (flen < bestrlen)
 				break;
-			xfs_alloc_compute_aligned(fbno, flen, args->alignment,
-				args->minlen, &rbno, &rlen);
+			xfs_alloc_compute_aligned(args, fbno, flen,
+						  &rbno, &rlen);
 			rlen = XFS_EXTLEN_MIN(args->maxlen, rlen);
 			XFS_WANT_CORRUPTED_GOTO(rlen == 0 ||
 				(rlen <= flen && rbno + rlen <= fbno + flen),
@@ -1388,6 +1401,7 @@ xfs_free_ag_extent(
 	xfs_mount_t	*mp;		/* mount point struct for filesystem */
 	xfs_agblock_t	nbno;		/* new starting block of freespace */
 	xfs_extlen_t	nlen;		/* new length of freespace */
+	xfs_perag_t	*pag;		/* per allocation group data */
 
 	mp = tp->t_mountp;
 	/*
@@ -1586,30 +1600,20 @@ xfs_free_ag_extent(
 	XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
 	xfs_btree_del_cursor(cnt_cur, XFS_BTREE_NOERROR);
 	cnt_cur = NULL;
+
 	/*
 	 * Update the freespace totals in the ag and superblock.
 	 */
-	{
-		xfs_agf_t	*agf;
-		xfs_perag_t	*pag;		/* per allocation group data */
-
-		pag = xfs_perag_get(mp, agno);
-		pag->pagf_freeblks += len;
-		xfs_perag_put(pag);
-
-		agf = XFS_BUF_TO_AGF(agbp);
-		be32_add_cpu(&agf->agf_freeblks, len);
-		xfs_trans_agblocks_delta(tp, len);
-		XFS_WANT_CORRUPTED_GOTO(
-			be32_to_cpu(agf->agf_freeblks) <=
-			be32_to_cpu(agf->agf_length),
-			error0);
-		xfs_alloc_log_agf(tp, agbp, XFS_AGF_FREEBLKS);
-		if (!isfl)
-			xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, (long)len);
-		XFS_STATS_INC(xs_freex);
-		XFS_STATS_ADD(xs_freeb, len);
-	}
+	pag = xfs_perag_get(mp, agno);
+	error = xfs_alloc_update_counters(tp, pag, agbp, len);
+	xfs_perag_put(pag);
+	if (error)
+		goto error0;
+
+	if (!isfl)
+		xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, (long)len);
+	XFS_STATS_INC(xs_freex);
+	XFS_STATS_ADD(xs_freeb, len);
 
 	trace_xfs_free_extent(mp, agno, bno, len, isfl, haveleft, haveright);
 
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index dc3afd77..fa00788 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -2365,6 +2365,13 @@ xfs_bmap_rtalloc(
 	 */
 	if (ralen * mp->m_sb.sb_rextsize >= MAXEXTLEN)
 		ralen = MAXEXTLEN / mp->m_sb.sb_rextsize;
+
+	/*
+	 * Lock out other modifications to the RT bitmap inode.
+	 */
+	xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL);
+	xfs_trans_ijoin_ref(ap->tp, mp->m_rbmip, XFS_ILOCK_EXCL);
+
 	/*
 	 * If it's an allocation to an empty file at offset 0,
 	 * pick an extent that will space things out in the rt area.
@@ -3519,7 +3526,7 @@ xfs_bmap_search_extents(
 
 	if (unlikely(!(gotp->br_startblock) && (*lastxp != NULLEXTNUM) &&
 		     !(XFS_IS_REALTIME_INODE(ip) && fork == XFS_DATA_FORK))) {
-		xfs_cmn_err(XFS_PTAG_FSBLOCK_ZERO, CE_ALERT, ip->i_mount,
+		xfs_alert_tag(ip->i_mount, XFS_PTAG_FSBLOCK_ZERO,
 				"Access to block zero in inode %llu "
 				"start_block: %llx start_off: %llx "
 				"blkcnt: %llx extent-state: %x lastx: %x\n",
@@ -4193,12 +4200,11 @@ xfs_bmap_read_extents(
 		num_recs = xfs_btree_get_numrecs(block);
 		if (unlikely(i + num_recs > room)) {
 			ASSERT(i + num_recs <= room);
-			xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
+			xfs_warn(ip->i_mount,
 				"corrupt dinode %Lu, (btree extents).",
 				(unsigned long long) ip->i_ino);
-			XFS_ERROR_REPORT("xfs_bmap_read_extents(1)",
-					 XFS_ERRLEVEL_LOW,
-					ip->i_mount);
+			XFS_CORRUPTION_ERROR("xfs_bmap_read_extents(1)",
+				XFS_ERRLEVEL_LOW, ip->i_mount, block);
 			goto error0;
 		}
 		XFS_WANT_CORRUPTED_GOTO(
@@ -5772,7 +5778,7 @@ xfs_check_block(
 			else
 				thispa = XFS_BMBT_PTR_ADDR(mp, block, j, dmxr);
 			if (*thispa == *pp) {
-				cmn_err(CE_WARN, "%s: thispa(%d) == pp(%d) %Ld",
+				xfs_warn(mp, "%s: thispa(%d) == pp(%d) %Ld",
 					__func__, j, i,
 					(unsigned long long)be64_to_cpu(*thispa));
 				panic("%s: ptrs are equal in node\n",
@@ -5937,11 +5943,11 @@ xfs_bmap_check_leaf_extents(
 	return;
 
 error0:
-	cmn_err(CE_WARN, "%s: at error0", __func__);
+	xfs_warn(mp, "%s: at error0", __func__);
 	if (bp_release)
 		xfs_trans_brelse(NULL, bp);
 error_norelse:
-	cmn_err(CE_WARN, "%s: BAD after btree leaves for %d extents",
+	xfs_warn(mp, "%s: BAD after btree leaves for %d extents",
 		__func__, i);
 	panic("%s: CORRUPTED BTREE OR SOMETHING", __func__);
 	return;
@@ -6144,7 +6150,7 @@ xfs_bmap_punch_delalloc_range(
 		if (error) {
 			/* something screwed, just bail */
 			if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) {
-				xfs_fs_cmn_err(CE_ALERT, ip->i_mount,
+				xfs_alert(ip->i_mount,
 			"Failed delalloc mapping lookup ino %lld fsb %lld.",
 						ip->i_ino, start_fsb);
 			}
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index 6f8c21c..e5413d9 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -130,10 +130,12 @@ xfs_buf_item_log_check(
 	orig = bip->bli_orig;
 	buffer = XFS_BUF_PTR(bp);
 	for (x = 0; x < XFS_BUF_COUNT(bp); x++) {
-		if (orig[x] != buffer[x] && !btst(bip->bli_logged, x))
-			cmn_err(CE_PANIC,
-	"xfs_buf_item_log_check bip %x buffer %x orig %x index %d",
-				bip, bp, orig, x);
+		if (orig[x] != buffer[x] && !btst(bip->bli_logged, x)) {
+			xfs_emerg(bp->b_mount,
+				"%s: bip %x buffer %x orig %x index %d",
+				__func__, bip, bp, orig, x);
+			ASSERT(0);
+		}
 	}
 }
 #else
@@ -983,10 +985,9 @@ xfs_buf_iodone_callbacks(
 	if (XFS_BUF_TARGET(bp) != lasttarg ||
 	    time_after(jiffies, (lasttime + 5*HZ))) {
 		lasttime = jiffies;
-		cmn_err(CE_ALERT, "Device %s, XFS metadata write error"
-				" block 0x%llx in %s",
+		xfs_alert(mp, "Device %s: metadata write error block 0x%llx",
 			XFS_BUFTARG_NAME(XFS_BUF_TARGET(bp)),
-		      (__uint64_t)XFS_BUF_ADDR(bp), mp->m_fsname);
+		      (__uint64_t)XFS_BUF_ADDR(bp));
 	}
 	lasttarg = XFS_BUF_TARGET(bp);
 
diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c
index 1c00bed..6102ac6 100644
--- a/fs/xfs/xfs_da_btree.c
+++ b/fs/xfs/xfs_da_btree.c
@@ -1995,13 +1995,12 @@ xfs_da_do_buf(
 		error = mappedbno == -2 ? 0 : XFS_ERROR(EFSCORRUPTED);
 		if (unlikely(error == EFSCORRUPTED)) {
 			if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
-				cmn_err(CE_ALERT, "xfs_da_do_buf: bno %lld\n",
-					(long long)bno);
-				cmn_err(CE_ALERT, "dir: inode %lld\n",
+				xfs_alert(mp, "%s: bno %lld dir: inode %lld",
+					__func__, (long long)bno,
 					(long long)dp->i_ino);
 				for (i = 0; i < nmap; i++) {
-					cmn_err(CE_ALERT,
-						"[%02d] br_startoff %lld br_startblock %lld br_blockcount %lld br_state %d\n",
+					xfs_alert(mp,
+"[%02d] br_startoff %lld br_startblock %lld br_blockcount %lld br_state %d",
 						i,
 						(long long)mapp[i].br_startoff,
 						(long long)mapp[i].br_startblock,
diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
index e60490b..be628677 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -270,9 +270,9 @@ xfs_swap_extents(
 	/* check inode formats now that data is flushed */
 	error = xfs_swap_extents_check_format(ip, tip);
 	if (error) {
-		xfs_fs_cmn_err(CE_NOTE, mp,
+		xfs_notice(mp,
 		    "%s: inode 0x%llx format is incompatible for exchanging.",
-				__FILE__, ip->i_ino);
+				__func__, ip->i_ino);
 		goto out_unlock;
 	}
 
diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c
index a1321bc..dba7a71 100644
--- a/fs/xfs/xfs_dir2.c
+++ b/fs/xfs/xfs_dir2.c
@@ -159,7 +159,7 @@ xfs_dir_ino_validate(
 		XFS_AGINO_TO_INO(mp, agno, agino) == ino;
 	if (unlikely(XFS_TEST_ERROR(!ino_ok, mp, XFS_ERRTAG_DIR_INO_VALIDATE,
 			XFS_RANDOM_DIR_INO_VALIDATE))) {
-		xfs_fs_cmn_err(CE_WARN, mp, "Invalid inode number 0x%Lx",
+		xfs_warn(mp, "Invalid inode number 0x%Lx",
 				(unsigned long long) ino);
 		XFS_ERROR_REPORT("xfs_dir_ino_validate", XFS_ERRLEVEL_LOW, mp);
 		return XFS_ERROR(EFSCORRUPTED);
diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c
index f9a0864..a0aab7d 100644
--- a/fs/xfs/xfs_dir2_node.c
+++ b/fs/xfs/xfs_dir2_node.c
@@ -899,10 +899,9 @@ xfs_dir2_leafn_rebalance(
 	if(blk2->index < 0) {
 		state->inleaf = 1;
 		blk2->index = 0;
-		cmn_err(CE_ALERT,
-			"xfs_dir2_leafn_rebalance: picked the wrong leaf? reverting original leaf: "
-			"blk1->index %d\n",
-			blk1->index);
+		xfs_alert(args->dp->i_mount,
+	"%s: picked the wrong leaf? reverting original leaf: blk1->index %d\n",
+			__func__, blk1->index);
 	}
 }
 
@@ -1641,26 +1640,22 @@ xfs_dir2_node_addname_int(
 			}
 
 			if (unlikely(xfs_dir2_db_to_fdb(mp, dbno) != fbno)) {
-				cmn_err(CE_ALERT,
-					"xfs_dir2_node_addname_int: dir ino "
-					"%llu needed freesp block %lld for\n"
-					"  data block %lld, got %lld\n"
-					"  ifbno %llu lastfbno %d\n",
-					(unsigned long long)dp->i_ino,
+				xfs_alert(mp,
+			"%s: dir ino " "%llu needed freesp block %lld for\n"
+			"  data block %lld, got %lld ifbno %llu lastfbno %d",
+					__func__, (unsigned long long)dp->i_ino,
 					(long long)xfs_dir2_db_to_fdb(mp, dbno),
 					(long long)dbno, (long long)fbno,
 					(unsigned long long)ifbno, lastfbno);
 				if (fblk) {
-					cmn_err(CE_ALERT,
-						" fblk 0x%p blkno %llu "
-						"index %d magic 0x%x\n",
+					xfs_alert(mp,
+				" fblk 0x%p blkno %llu index %d magic 0x%x",
 						fblk,
 						(unsigned long long)fblk->blkno,
 						fblk->index,
 						fblk->magic);
 				} else {
-					cmn_err(CE_ALERT,
-						" ... fblk is NULL\n");
+					xfs_alert(mp, " ... fblk is NULL");
 				}
 				XFS_ERROR_REPORT("xfs_dir2_node_addname_int",
 						 XFS_ERRLEVEL_LOW, mp);
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index 4c7db74..39f0633 100644
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -48,7 +48,7 @@ xfs_error_trap(int e)
 			break;
 		if (e != xfs_etrap[i])
 			continue;
-		cmn_err(CE_NOTE, "xfs_error_trap: error %d", e);
+		xfs_notice(NULL, "%s: error %d", __func__, e);
 		BUG();
 		break;
 	}
@@ -74,7 +74,7 @@ xfs_error_test(int error_tag, int *fsidp, char *expression,
 
 	for (i = 0; i < XFS_NUM_INJECT_ERROR; i++)  {
 		if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) {
-			cmn_err(CE_WARN,
+			xfs_warn(NULL,
 	"Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
 				expression, file, line, xfs_etest_fsname[i]);
 			return 1;
@@ -95,14 +95,14 @@ xfs_errortag_add(int error_tag, xfs_mount_t *mp)
 
 	for (i = 0; i < XFS_NUM_INJECT_ERROR; i++)  {
 		if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) {
-			cmn_err(CE_WARN, "XFS error tag #%d on", error_tag);
+			xfs_warn(mp, "error tag #%d on", error_tag);
 			return 0;
 		}
 	}
 
 	for (i = 0; i < XFS_NUM_INJECT_ERROR; i++)  {
 		if (xfs_etest[i] == 0) {
-			cmn_err(CE_WARN, "Turned on XFS error tag #%d",
+			xfs_warn(mp, "Turned on XFS error tag #%d",
 				error_tag);
 			xfs_etest[i] = error_tag;
 			xfs_etest_fsid[i] = fsid;
@@ -114,7 +114,7 @@ xfs_errortag_add(int error_tag, xfs_mount_t *mp)
 		}
 	}
 
-	cmn_err(CE_WARN, "error tag overflow, too many turned on");
+	xfs_warn(mp, "error tag overflow, too many turned on");
 
 	return 1;
 }
@@ -133,7 +133,7 @@ xfs_errortag_clearall(xfs_mount_t *mp, int loud)
 		if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
 		     xfs_etest[i] != 0) {
 			cleared = 1;
-			cmn_err(CE_WARN, "Clearing XFS error tag #%d",
+			xfs_warn(mp, "Clearing XFS error tag #%d",
 				xfs_etest[i]);
 			xfs_etest[i] = 0;
 			xfs_etest_fsid[i] = 0LL;
@@ -144,9 +144,7 @@ xfs_errortag_clearall(xfs_mount_t *mp, int loud)
 	}
 
 	if (loud || cleared)
-		cmn_err(CE_WARN,
-			"Cleared all XFS error tags for filesystem \"%s\"",
-			mp->m_fsname);
+		xfs_warn(mp, "Cleared all XFS error tags for filesystem");
 
 	return 0;
 }
@@ -162,9 +160,8 @@ xfs_error_report(
 	inst_t			*ra)
 {
 	if (level <= xfs_error_level) {
-		xfs_cmn_err(XFS_PTAG_ERROR_REPORT,
-			    CE_ALERT, mp,
-		"XFS internal error %s at line %d of file %s.  Caller 0x%p\n",
+		xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
+		"Internal error %s at line %d of file %s.  Caller 0x%p\n",
 			    tag, linenum, filename, ra);
 
 		xfs_stack_trace();
@@ -184,4 +181,5 @@ xfs_corruption_error(
 	if (level <= xfs_error_level)
 		xfs_hex_dump(p, 16);
 	xfs_error_report(tag, level, mp, filename, linenum, ra);
+	xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
 }
diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h
index 10dce54..079a367 100644
--- a/fs/xfs/xfs_error.h
+++ b/fs/xfs/xfs_error.h
@@ -145,10 +145,8 @@ extern int xfs_errortag_clearall(struct xfs_mount *mp, int loud);
 #endif /* DEBUG */
 
 /*
- * XFS panic tags -- allow a call to xfs_cmn_err() be turned into
- *			a panic by setting xfs_panic_mask in a
- *			sysctl.  update xfs_max[XFS_PARAM] if
- *			more are added.
+ * XFS panic tags -- allow a call to xfs_alert_tag() be turned into
+ *			a panic by setting xfs_panic_mask in a sysctl.
  */
 #define		XFS_NO_PTAG			0
 #define		XFS_PTAG_IFLUSH			0x00000001
@@ -160,17 +158,4 @@ extern int xfs_errortag_clearall(struct xfs_mount *mp, int loud);
 #define		XFS_PTAG_SHUTDOWN_LOGERROR	0x00000040
 #define		XFS_PTAG_FSBLOCK_ZERO		0x00000080
 
-struct xfs_mount;
-
-extern void xfs_hex_dump(void *p, int length);
-
-#define xfs_fs_repair_cmn_err(level, mp, fmt, args...) \
-	xfs_fs_cmn_err(level, mp, fmt "  Unmount and run xfs_repair.", ## args)
-
-#define xfs_fs_mount_cmn_err(f, fmt, args...) \
-	do { \
-		if (!(f & XFS_MFSI_QUIET)) 	\
-			cmn_err(CE_WARN, "XFS: " fmt, ## args); \
-	} while (0)
-
 #endif	/* __XFS_ERROR_H__ */
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 85668ef..9153d2c 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -385,8 +385,8 @@ xfs_growfs_data_private(
 				  XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
 				  XFS_FSS_TO_BB(mp, 1), 0, &bp);
 		if (error) {
-			xfs_fs_cmn_err(CE_WARN, mp,
-			"error %d reading secondary superblock for ag %d",
+			xfs_warn(mp,
+		"error %d reading secondary superblock for ag %d",
 				error, agno);
 			break;
 		}
@@ -399,7 +399,7 @@ xfs_growfs_data_private(
 		if (!(error = xfs_bwrite(mp, bp))) {
 			continue;
 		} else {
-			xfs_fs_cmn_err(CE_WARN, mp,
+			xfs_warn(mp,
 		"write error %d updating secondary superblock for ag %d",
 				error, agno);
 			break; /* no point in continuing */
diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index 0626a32..84ebeec 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -1055,28 +1055,23 @@ xfs_difree(
 	 */
 	agno = XFS_INO_TO_AGNO(mp, inode);
 	if (agno >= mp->m_sb.sb_agcount)  {
-		cmn_err(CE_WARN,
-			"xfs_difree: agno >= mp->m_sb.sb_agcount (%d >= %d) on %s.  Returning EINVAL.",
-			agno, mp->m_sb.sb_agcount, mp->m_fsname);
+		xfs_warn(mp, "%s: agno >= mp->m_sb.sb_agcount (%d >= %d).",
+			__func__, agno, mp->m_sb.sb_agcount);
 		ASSERT(0);
 		return XFS_ERROR(EINVAL);
 	}
 	agino = XFS_INO_TO_AGINO(mp, inode);
 	if (inode != XFS_AGINO_TO_INO(mp, agno, agino))  {
-		cmn_err(CE_WARN,
-			"xfs_difree: inode != XFS_AGINO_TO_INO() "
-			"(%llu != %llu) on %s.  Returning EINVAL.",
-			(unsigned long long)inode,
-			(unsigned long long)XFS_AGINO_TO_INO(mp, agno, agino),
-			mp->m_fsname);
+		xfs_warn(mp, "%s: inode != XFS_AGINO_TO_INO() (%llu != %llu).",
+			__func__, (unsigned long long)inode,
+			(unsigned long long)XFS_AGINO_TO_INO(mp, agno, agino));
 		ASSERT(0);
 		return XFS_ERROR(EINVAL);
 	}
 	agbno = XFS_AGINO_TO_AGBNO(mp, agino);
 	if (agbno >= mp->m_sb.sb_agblocks)  {
-		cmn_err(CE_WARN,
-			"xfs_difree: agbno >= mp->m_sb.sb_agblocks (%d >= %d) on %s.  Returning EINVAL.",
-			agbno, mp->m_sb.sb_agblocks, mp->m_fsname);
+		xfs_warn(mp, "%s: agbno >= mp->m_sb.sb_agblocks (%d >= %d).",
+			__func__, agbno, mp->m_sb.sb_agblocks);
 		ASSERT(0);
 		return XFS_ERROR(EINVAL);
 	}
@@ -1085,9 +1080,8 @@ xfs_difree(
 	 */
 	error = xfs_ialloc_read_agi(mp, tp, agno, &agbp);
 	if (error) {
-		cmn_err(CE_WARN,
-			"xfs_difree: xfs_ialloc_read_agi() returned an error %d on %s.  Returning error.",
-			error, mp->m_fsname);
+		xfs_warn(mp, "%s: xfs_ialloc_read_agi() returned error %d.",
+			__func__, error);
 		return error;
 	}
 	agi = XFS_BUF_TO_AGI(agbp);
@@ -1106,17 +1100,15 @@ xfs_difree(
 	 * Look for the entry describing this inode.
 	 */
 	if ((error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_LE, &i))) {
-		cmn_err(CE_WARN,
-			"xfs_difree: xfs_inobt_lookup returned()  an error %d on %s.  Returning error.",
-			error, mp->m_fsname);
+		xfs_warn(mp, "%s: xfs_inobt_lookup() returned error %d.",
+			__func__, error);
 		goto error0;
 	}
 	XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
 	error = xfs_inobt_get_rec(cur, &rec, &i);
 	if (error) {
-		cmn_err(CE_WARN,
-			"xfs_difree: xfs_inobt_get_rec()  returned an error %d on %s.  Returning error.",
-			error, mp->m_fsname);
+		xfs_warn(mp, "%s: xfs_inobt_get_rec() returned error %d.",
+			__func__, error);
 		goto error0;
 	}
 	XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
@@ -1157,8 +1149,8 @@ xfs_difree(
 		xfs_trans_mod_sb(tp, XFS_TRANS_SB_IFREE, -(ilen - 1));
 
 		if ((error = xfs_btree_delete(cur, &i))) {
-			cmn_err(CE_WARN, "xfs_difree: xfs_btree_delete returned an error %d on %s.\n",
-				error, mp->m_fsname);
+			xfs_warn(mp, "%s: xfs_btree_delete returned error %d.",
+				__func__, error);
 			goto error0;
 		}
 
@@ -1170,9 +1162,8 @@ xfs_difree(
 
 		error = xfs_inobt_update(cur, &rec);
 		if (error) {
-			cmn_err(CE_WARN,
-	"xfs_difree: xfs_inobt_update returned an error %d on %s.",
-				error, mp->m_fsname);
+			xfs_warn(mp, "%s: xfs_inobt_update returned error %d.",
+				__func__, error);
 			goto error0;
 		}
 
@@ -1218,10 +1209,9 @@ xfs_imap_lookup(
 
 	error = xfs_ialloc_read_agi(mp, tp, agno, &agbp);
 	if (error) {
-		xfs_fs_cmn_err(CE_ALERT, mp, "xfs_imap: "
-				"xfs_ialloc_read_agi() returned "
-				"error %d, agno %d",
-				error, agno);
+		xfs_alert(mp,
+			"%s: xfs_ialloc_read_agi() returned error %d, agno %d",
+			__func__, error, agno);
 		return error;
 	}
 
@@ -1299,24 +1289,21 @@ xfs_imap(
 		if (flags & XFS_IGET_UNTRUSTED)
 			return XFS_ERROR(EINVAL);
 		if (agno >= mp->m_sb.sb_agcount) {
-			xfs_fs_cmn_err(CE_ALERT, mp,
-					"xfs_imap: agno (%d) >= "
-					"mp->m_sb.sb_agcount (%d)",
-					agno,  mp->m_sb.sb_agcount);
+			xfs_alert(mp,
+				"%s: agno (%d) >= mp->m_sb.sb_agcount (%d)",
+				__func__, agno, mp->m_sb.sb_agcount);
 		}
 		if (agbno >= mp->m_sb.sb_agblocks) {
-			xfs_fs_cmn_err(CE_ALERT, mp,
-					"xfs_imap: agbno (0x%llx) >= "
-					"mp->m_sb.sb_agblocks (0x%lx)",
-					(unsigned long long) agbno,
-					(unsigned long) mp->m_sb.sb_agblocks);
+			xfs_alert(mp,
+		"%s: agbno (0x%llx) >= mp->m_sb.sb_agblocks (0x%lx)",
+				__func__, (unsigned long long)agbno,
+				(unsigned long)mp->m_sb.sb_agblocks);
 		}
 		if (ino != XFS_AGINO_TO_INO(mp, agno, agino)) {
-			xfs_fs_cmn_err(CE_ALERT, mp,
-					"xfs_imap: ino (0x%llx) != "
-					"XFS_AGINO_TO_INO(mp, agno, agino) "
-					"(0x%llx)",
-					ino, XFS_AGINO_TO_INO(mp, agno, agino));
+			xfs_alert(mp,
+		"%s: ino (0x%llx) != XFS_AGINO_TO_INO() (0x%llx)",
+				__func__, ino,
+				XFS_AGINO_TO_INO(mp, agno, agino));
 		}
 		xfs_stack_trace();
 #endif /* DEBUG */
@@ -1388,10 +1375,9 @@ out_map:
 	 */
 	if ((imap->im_blkno + imap->im_len) >
 	    XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks)) {
-		xfs_fs_cmn_err(CE_ALERT, mp, "xfs_imap: "
-			"(imap->im_blkno (0x%llx) + imap->im_len (0x%llx)) > "
-			" XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks) (0x%llx)",
-			(unsigned long long) imap->im_blkno,
+		xfs_alert(mp,
+	"%s: (im_blkno (0x%llx) + im_len (0x%llx)) > sb_dblocks (0x%llx)",
+			__func__, (unsigned long long) imap->im_blkno,
 			(unsigned long long) imap->im_len,
 			XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks));
 		return XFS_ERROR(EINVAL);
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index be7cf62..742c833 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -110,8 +110,8 @@ xfs_inobp_check(
 		dip = (xfs_dinode_t *)xfs_buf_offset(bp,
 					i * mp->m_sb.sb_inodesize);
 		if (!dip->di_next_unlinked)  {
-			xfs_fs_cmn_err(CE_ALERT, mp,
-				"Detected a bogus zero next_unlinked field in incore inode buffer 0x%p.  About to pop an ASSERT.",
+			xfs_alert(mp,
+	"Detected bogus zero next_unlinked field in incore inode buffer 0x%p.",
 				bp);
 			ASSERT(dip->di_next_unlinked);
 		}
@@ -142,10 +142,9 @@ xfs_imap_to_bp(
 				   (int)imap->im_len, buf_flags, &bp);
 	if (error) {
 		if (error != EAGAIN) {
-			cmn_err(CE_WARN,
-				"xfs_imap_to_bp: xfs_trans_read_buf()returned "
-				"an error %d on %s.  Returning error.",
-				error, mp->m_fsname);
+			xfs_warn(mp,
+				"%s: xfs_trans_read_buf() returned error %d.",
+				__func__, error);
 		} else {
 			ASSERT(buf_flags & XBF_TRYLOCK);
 		}
@@ -180,12 +179,11 @@ xfs_imap_to_bp(
 			XFS_CORRUPTION_ERROR("xfs_imap_to_bp",
 						XFS_ERRLEVEL_HIGH, mp, dip);
 #ifdef DEBUG
-			cmn_err(CE_PANIC,
-					"Device %s - bad inode magic/vsn "
-					"daddr %lld #%d (magic=%x)",
-				XFS_BUFTARG_NAME(mp->m_ddev_targp),
+			xfs_emerg(mp,
+				"bad inode magic/vsn daddr %lld #%d (magic=%x)",
 				(unsigned long long)imap->im_blkno, i,
 				be16_to_cpu(dip->di_magic));
+			ASSERT(0);
 #endif
 			xfs_trans_brelse(tp, bp);
 			return XFS_ERROR(EFSCORRUPTED);
@@ -317,7 +315,7 @@ xfs_iformat(
 	if (unlikely(be32_to_cpu(dip->di_nextents) +
 		     be16_to_cpu(dip->di_anextents) >
 		     be64_to_cpu(dip->di_nblocks))) {
-		xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
+		xfs_warn(ip->i_mount,
 			"corrupt dinode %Lu, extent total = %d, nblocks = %Lu.",
 			(unsigned long long)ip->i_ino,
 			(int)(be32_to_cpu(dip->di_nextents) +
@@ -330,8 +328,7 @@ xfs_iformat(
 	}
 
 	if (unlikely(dip->di_forkoff > ip->i_mount->m_sb.sb_inodesize)) {
-		xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
-			"corrupt dinode %Lu, forkoff = 0x%x.",
+		xfs_warn(ip->i_mount, "corrupt dinode %Lu, forkoff = 0x%x.",
 			(unsigned long long)ip->i_ino,
 			dip->di_forkoff);
 		XFS_CORRUPTION_ERROR("xfs_iformat(2)", XFS_ERRLEVEL_LOW,
@@ -341,7 +338,7 @@ xfs_iformat(
 
 	if (unlikely((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) &&
 		     !ip->i_mount->m_rtdev_targp)) {
-		xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
+		xfs_warn(ip->i_mount,
 			"corrupt dinode %Lu, has realtime flag set.",
 			ip->i_ino);
 		XFS_CORRUPTION_ERROR("xfs_iformat(realtime)",
@@ -373,9 +370,8 @@ xfs_iformat(
 			 * no local regular files yet
 			 */
 			if (unlikely((be16_to_cpu(dip->di_mode) & S_IFMT) == S_IFREG)) {
-				xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
-					"corrupt inode %Lu "
-					"(local format for regular file).",
+				xfs_warn(ip->i_mount,
+			"corrupt inode %Lu (local format for regular file).",
 					(unsigned long long) ip->i_ino);
 				XFS_CORRUPTION_ERROR("xfs_iformat(4)",
 						     XFS_ERRLEVEL_LOW,
@@ -385,9 +381,8 @@ xfs_iformat(
 
 			di_size = be64_to_cpu(dip->di_size);
 			if (unlikely(di_size > XFS_DFORK_DSIZE(dip, ip->i_mount))) {
-				xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
-					"corrupt inode %Lu "
-					"(bad size %Ld for local inode).",
+				xfs_warn(ip->i_mount,
+			"corrupt inode %Lu (bad size %Ld for local inode).",
 					(unsigned long long) ip->i_ino,
 					(long long) di_size);
 				XFS_CORRUPTION_ERROR("xfs_iformat(5)",
@@ -431,9 +426,8 @@ xfs_iformat(
 		size = be16_to_cpu(atp->hdr.totsize);
 
 		if (unlikely(size < sizeof(struct xfs_attr_sf_hdr))) {
-			xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
-				"corrupt inode %Lu "
-				"(bad attr fork size %Ld).",
+			xfs_warn(ip->i_mount,
+				"corrupt inode %Lu (bad attr fork size %Ld).",
 				(unsigned long long) ip->i_ino,
 				(long long) size);
 			XFS_CORRUPTION_ERROR("xfs_iformat(8)",
@@ -488,9 +482,8 @@ xfs_iformat_local(
 	 * kmem_alloc() or memcpy() below.
 	 */
 	if (unlikely(size > XFS_DFORK_SIZE(dip, ip->i_mount, whichfork))) {
-		xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
-			"corrupt inode %Lu "
-			"(bad size %d for local fork, size = %d).",
+		xfs_warn(ip->i_mount,
+	"corrupt inode %Lu (bad size %d for local fork, size = %d).",
 			(unsigned long long) ip->i_ino, size,
 			XFS_DFORK_SIZE(dip, ip->i_mount, whichfork));
 		XFS_CORRUPTION_ERROR("xfs_iformat_local", XFS_ERRLEVEL_LOW,
@@ -547,8 +540,7 @@ xfs_iformat_extents(
 	 * kmem_alloc() or memcpy() below.
 	 */
 	if (unlikely(size < 0 || size > XFS_DFORK_SIZE(dip, ip->i_mount, whichfork))) {
-		xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
-			"corrupt inode %Lu ((a)extents = %d).",
+		xfs_warn(ip->i_mount, "corrupt inode %Lu ((a)extents = %d).",
 			(unsigned long long) ip->i_ino, nex);
 		XFS_CORRUPTION_ERROR("xfs_iformat_extents(1)", XFS_ERRLEVEL_LOW,
 				     ip->i_mount, dip);
@@ -623,11 +615,10 @@ xfs_iformat_btree(
 	    || XFS_BMDR_SPACE_CALC(nrecs) >
 			XFS_DFORK_SIZE(dip, ip->i_mount, whichfork)
 	    || XFS_IFORK_NEXTENTS(ip, whichfork) > ip->i_d.di_nblocks)) {
-		xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
-			"corrupt inode %Lu (btree).",
+		xfs_warn(ip->i_mount, "corrupt inode %Lu (btree).",
 			(unsigned long long) ip->i_ino);
-		XFS_ERROR_REPORT("xfs_iformat_btree", XFS_ERRLEVEL_LOW,
-				 ip->i_mount);
+		XFS_CORRUPTION_ERROR("xfs_iformat_btree", XFS_ERRLEVEL_LOW,
+				 ip->i_mount, dip);
 		return XFS_ERROR(EFSCORRUPTED);
 	}
 
@@ -813,11 +804,9 @@ xfs_iread(
 	 */
 	if (be16_to_cpu(dip->di_magic) != XFS_DINODE_MAGIC) {
 #ifdef DEBUG
-		xfs_fs_cmn_err(CE_ALERT, mp, "xfs_iread: "
-				"dip->di_magic (0x%x) != "
-				"XFS_DINODE_MAGIC (0x%x)",
-				be16_to_cpu(dip->di_magic),
-				XFS_DINODE_MAGIC);
+		xfs_alert(mp,
+			"%s: dip->di_magic (0x%x) != XFS_DINODE_MAGIC (0x%x)",
+			__func__, be16_to_cpu(dip->di_magic), XFS_DINODE_MAGIC);
 #endif /* DEBUG */
 		error = XFS_ERROR(EINVAL);
 		goto out_brelse;
@@ -835,9 +824,8 @@ xfs_iread(
 		error = xfs_iformat(ip, dip);
 		if (error)  {
 #ifdef DEBUG
-			xfs_fs_cmn_err(CE_ALERT, mp, "xfs_iread: "
-					"xfs_iformat() returned error %d",
-					error);
+			xfs_alert(mp, "%s: xfs_iformat() returned error %d",
+				__func__, error);
 #endif /* DEBUG */
 			goto out_brelse;
 		}
@@ -1016,8 +1004,8 @@ xfs_ialloc(
 	 * This is because we're setting fields here we need
 	 * to prevent others from looking at until we're done.
 	 */
-	error = xfs_trans_iget(tp->t_mountp, tp, ino,
-				XFS_IGET_CREATE, XFS_ILOCK_EXCL, &ip);
+	error = xfs_iget(tp->t_mountp, tp, ino, XFS_IGET_CREATE,
+			 XFS_ILOCK_EXCL, &ip);
 	if (error)
 		return error;
 	ASSERT(ip != NULL);
@@ -1166,6 +1154,7 @@ xfs_ialloc(
 	/*
 	 * Log the new values stuffed into the inode.
 	 */
+	xfs_trans_ijoin_ref(tp, ip, XFS_ILOCK_EXCL);
 	xfs_trans_log_inode(tp, ip, flags);
 
 	/* now that we have an i_mode we can setup inode ops and unlock */
@@ -1820,9 +1809,8 @@ xfs_iunlink_remove(
 		 */
 		error = xfs_itobp(mp, tp, ip, &dip, &ibp, XBF_LOCK);
 		if (error) {
-			cmn_err(CE_WARN,
-				"xfs_iunlink_remove: xfs_itobp()  returned an error %d on %s.  Returning error.",
-				error, mp->m_fsname);
+			xfs_warn(mp, "%s: xfs_itobp() returned error %d.",
+				__func__, error);
 			return error;
 		}
 		next_agino = be32_to_cpu(dip->di_next_unlinked);
@@ -1867,9 +1855,9 @@ xfs_iunlink_remove(
 			error = xfs_inotobp(mp, tp, next_ino, &last_dip,
 					    &last_ibp, &last_offset, 0);
 			if (error) {
-				cmn_err(CE_WARN,
-			"xfs_iunlink_remove: xfs_inotobp()  returned an error %d on %s.  Returning error.",
-					error, mp->m_fsname);
+				xfs_warn(mp,
+					"%s: xfs_inotobp() returned error %d.",
+					__func__, error);
 				return error;
 			}
 			next_agino = be32_to_cpu(last_dip->di_next_unlinked);
@@ -1882,9 +1870,8 @@ xfs_iunlink_remove(
 		 */
 		error = xfs_itobp(mp, tp, ip, &dip, &ibp, XBF_LOCK);
 		if (error) {
-			cmn_err(CE_WARN,
-				"xfs_iunlink_remove: xfs_itobp()  returned an error %d on %s.  Returning error.",
-				error, mp->m_fsname);
+			xfs_warn(mp, "%s: xfs_itobp(2) returned error %d.",
+				__func__, error);
 			return error;
 		}
 		next_agino = be32_to_cpu(dip->di_next_unlinked);
@@ -2848,7 +2835,7 @@ xfs_iflush(
 	 * Get the buffer containing the on-disk inode.
 	 */
 	error = xfs_itobp(mp, NULL, ip, &dip, &bp,
-				(flags & SYNC_WAIT) ? XBF_LOCK : XBF_TRYLOCK);
+				(flags & SYNC_TRYLOCK) ? XBF_TRYLOCK : XBF_LOCK);
 	if (error || !bp) {
 		xfs_ifunlock(ip);
 		return error;
@@ -2939,16 +2926,16 @@ xfs_iflush_int(
 
 	if (XFS_TEST_ERROR(be16_to_cpu(dip->di_magic) != XFS_DINODE_MAGIC,
 			       mp, XFS_ERRTAG_IFLUSH_1, XFS_RANDOM_IFLUSH_1)) {
-		xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
-		    "xfs_iflush: Bad inode %Lu magic number 0x%x, ptr 0x%p",
-			ip->i_ino, be16_to_cpu(dip->di_magic), dip);
+		xfs_alert_tag(mp, XFS_PTAG_IFLUSH,
+			"%s: Bad inode %Lu magic number 0x%x, ptr 0x%p",
+			__func__, ip->i_ino, be16_to_cpu(dip->di_magic), dip);
 		goto corrupt_out;
 	}
 	if (XFS_TEST_ERROR(ip->i_d.di_magic != XFS_DINODE_MAGIC,
 				mp, XFS_ERRTAG_IFLUSH_2, XFS_RANDOM_IFLUSH_2)) {
-		xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
-			"xfs_iflush: Bad inode %Lu, ptr 0x%p, magic number 0x%x",
-			ip->i_ino, ip, ip->i_d.di_magic);
+		xfs_alert_tag(mp, XFS_PTAG_IFLUSH,
+			"%s: Bad inode %Lu, ptr 0x%p, magic number 0x%x",
+			__func__, ip->i_ino, ip, ip->i_d.di_magic);
 		goto corrupt_out;
 	}
 	if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) {
@@ -2956,9 +2943,9 @@ xfs_iflush_int(
 		    (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS) &&
 		    (ip->i_d.di_format != XFS_DINODE_FMT_BTREE),
 		    mp, XFS_ERRTAG_IFLUSH_3, XFS_RANDOM_IFLUSH_3)) {
-			xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
-				"xfs_iflush: Bad regular inode %Lu, ptr 0x%p",
-				ip->i_ino, ip);
+			xfs_alert_tag(mp, XFS_PTAG_IFLUSH,
+				"%s: Bad regular inode %Lu, ptr 0x%p",
+				__func__, ip->i_ino, ip);
 			goto corrupt_out;
 		}
 	} else if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) {
@@ -2967,28 +2954,28 @@ xfs_iflush_int(
 		    (ip->i_d.di_format != XFS_DINODE_FMT_BTREE) &&
 		    (ip->i_d.di_format != XFS_DINODE_FMT_LOCAL),
 		    mp, XFS_ERRTAG_IFLUSH_4, XFS_RANDOM_IFLUSH_4)) {
-			xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
-				"xfs_iflush: Bad directory inode %Lu, ptr 0x%p",
-				ip->i_ino, ip);
+			xfs_alert_tag(mp, XFS_PTAG_IFLUSH,
+				"%s: Bad directory inode %Lu, ptr 0x%p",
+				__func__, ip->i_ino, ip);
 			goto corrupt_out;
 		}
 	}
 	if (XFS_TEST_ERROR(ip->i_d.di_nextents + ip->i_d.di_anextents >
 				ip->i_d.di_nblocks, mp, XFS_ERRTAG_IFLUSH_5,
 				XFS_RANDOM_IFLUSH_5)) {
-		xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
-			"xfs_iflush: detected corrupt incore inode %Lu, total extents = %d, nblocks = %Ld, ptr 0x%p",
-			ip->i_ino,
+		xfs_alert_tag(mp, XFS_PTAG_IFLUSH,
+			"%s: detected corrupt incore inode %Lu, "
+			"total extents = %d, nblocks = %Ld, ptr 0x%p",
+			__func__, ip->i_ino,
 			ip->i_d.di_nextents + ip->i_d.di_anextents,
-			ip->i_d.di_nblocks,
-			ip);
+			ip->i_d.di_nblocks, ip);
 		goto corrupt_out;
 	}
 	if (XFS_TEST_ERROR(ip->i_d.di_forkoff > mp->m_sb.sb_inodesize,
 				mp, XFS_ERRTAG_IFLUSH_6, XFS_RANDOM_IFLUSH_6)) {
-		xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
-			"xfs_iflush: bad inode %Lu, forkoff 0x%x, ptr 0x%p",
-			ip->i_ino, ip->i_d.di_forkoff, ip);
+		xfs_alert_tag(mp, XFS_PTAG_IFLUSH,
+			"%s: bad inode %Lu, forkoff 0x%x, ptr 0x%p",
+			__func__, ip->i_ino, ip->i_d.di_forkoff, ip);
 		goto corrupt_out;
 	}
 	/*
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 5c95fa8..f753200 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -409,28 +409,35 @@ static inline void xfs_ifunlock(xfs_inode_t *ip)
 /*
  * Flags for lockdep annotations.
  *
- * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes
- * (ie directory operations that require locking a directory inode and
- * an entry inode).  The first inode gets locked with this flag so it
- * gets a lockdep subclass of 1 and the second lock will have a lockdep
- * subclass of 0.
+ * XFS_LOCK_PARENT - for directory operations that require locking a
+ * parent directory inode and a child entry inode.  The parent gets locked
+ * with this flag so it gets a lockdep subclass of 1 and the child entry
+ * lock will have a lockdep subclass of 0.
+ *
+ * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary
+ * inodes do not participate in the normal lock order, and thus have their
+ * own subclasses.
  *
  * XFS_LOCK_INUMORDER - for locking several inodes at the some time
  * with xfs_lock_inodes().  This flag is used as the starting subclass
  * and each subsequent lock acquired will increment the subclass by one.
- * So the first lock acquired will have a lockdep subclass of 2, the
- * second lock will have a lockdep subclass of 3, and so on. It is
+ * So the first lock acquired will have a lockdep subclass of 4, the
+ * second lock will have a lockdep subclass of 5, and so on. It is
  * the responsibility of the class builder to shift this to the correct
  * portion of the lock_mode lockdep mask.
  */
 #define XFS_LOCK_PARENT		1
-#define XFS_LOCK_INUMORDER	2
+#define XFS_LOCK_RTBITMAP	2
+#define XFS_LOCK_RTSUM		3
+#define XFS_LOCK_INUMORDER	4
 
 #define XFS_IOLOCK_SHIFT	16
 #define	XFS_IOLOCK_PARENT	(XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT)
 
 #define XFS_ILOCK_SHIFT		24
 #define	XFS_ILOCK_PARENT	(XFS_LOCK_PARENT << XFS_ILOCK_SHIFT)
+#define	XFS_ILOCK_RTBITMAP	(XFS_LOCK_RTBITMAP << XFS_ILOCK_SHIFT)
+#define	XFS_ILOCK_RTSUM		(XFS_LOCK_RTSUM << XFS_ILOCK_SHIFT)
 
 #define XFS_IOLOCK_DEP_MASK	0x00ff0000
 #define XFS_ILOCK_DEP_MASK	0xff000000
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index fd4f398..46cc401 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -760,11 +760,11 @@ xfs_inode_item_push(
 	 * Push the inode to it's backing buffer. This will not remove the
 	 * inode from the AIL - a further push will be required to trigger a
 	 * buffer push. However, this allows all the dirty inodes to be pushed
-	 * to the buffer before it is pushed to disk. THe buffer IO completion
-	 * will pull th einode from the AIL, mark it clean and unlock the flush
+	 * to the buffer before it is pushed to disk. The buffer IO completion
+	 * will pull the inode from the AIL, mark it clean and unlock the flush
 	 * lock.
 	 */
-	(void) xfs_iflush(ip, 0);
+	(void) xfs_iflush(ip, SYNC_TRYLOCK);
 	xfs_iunlock(ip, XFS_ILOCK_SHARED);
 }
 
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 8a0f044..091d82b 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -101,11 +101,11 @@ xfs_iomap_eof_align_last_fsb(
 }
 
 STATIC int
-xfs_cmn_err_fsblock_zero(
+xfs_alert_fsblock_zero(
 	xfs_inode_t	*ip,
 	xfs_bmbt_irec_t	*imap)
 {
-	xfs_cmn_err(XFS_PTAG_FSBLOCK_ZERO, CE_ALERT, ip->i_mount,
+	xfs_alert_tag(ip->i_mount, XFS_PTAG_FSBLOCK_ZERO,
 			"Access to block zero in inode %llu "
 			"start_block: %llx start_off: %llx "
 			"blkcnt: %llx extent-state: %x\n",
@@ -246,7 +246,7 @@ xfs_iomap_write_direct(
 	}
 
 	if (!(imap->br_startblock || XFS_IS_REALTIME_INODE(ip))) {
-		error = xfs_cmn_err_fsblock_zero(ip, imap);
+		error = xfs_alert_fsblock_zero(ip, imap);
 		goto error_out;
 	}
 
@@ -464,7 +464,7 @@ retry:
 	}
 
 	if (!(imap[0].br_startblock || XFS_IS_REALTIME_INODE(ip)))
-		return xfs_cmn_err_fsblock_zero(ip, &imap[0]);
+		return xfs_alert_fsblock_zero(ip, &imap[0]);
 
 	*ret_imap = imap[0];
 	return 0;
@@ -614,7 +614,7 @@ xfs_iomap_write_allocate(
 		 * covers at least part of the callers request
 		 */
 		if (!(imap->br_startblock || XFS_IS_REALTIME_INODE(ip)))
-			return xfs_cmn_err_fsblock_zero(ip, imap);
+			return xfs_alert_fsblock_zero(ip, imap);
 
 		if ((offset_fsb >= imap->br_startoff) &&
 		    (offset_fsb < (imap->br_startoff +
@@ -724,7 +724,7 @@ xfs_iomap_write_unwritten(
 			return XFS_ERROR(error);
 
 		if (!(imap.br_startblock || XFS_IS_REALTIME_INODE(ip)))
-			return xfs_cmn_err_fsblock_zero(ip, &imap);
+			return xfs_alert_fsblock_zero(ip, &imap);
 
 		if ((numblks_fsb = imap.br_blockcount) == 0) {
 			/*
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index ae6fef1f..25efa9b 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -374,11 +374,10 @@ xfs_log_mount(
 	int		error;
 
 	if (!(mp->m_flags & XFS_MOUNT_NORECOVERY))
-		cmn_err(CE_NOTE, "XFS mounting filesystem %s", mp->m_fsname);
+		xfs_notice(mp, "Mounting Filesystem");
 	else {
-		cmn_err(CE_NOTE,
-			"Mounting filesystem \"%s\" in no-recovery mode.  Filesystem will be inconsistent.",
-			mp->m_fsname);
+		xfs_notice(mp,
+"Mounting filesystem in no-recovery mode.  Filesystem will be inconsistent.");
 		ASSERT(mp->m_flags & XFS_MOUNT_RDONLY);
 	}
 
@@ -393,7 +392,7 @@ xfs_log_mount(
 	 */
 	error = xfs_trans_ail_init(mp);
 	if (error) {
-		cmn_err(CE_WARN, "XFS: AIL initialisation failed: error %d", error);
+		xfs_warn(mp, "AIL initialisation failed: error %d", error);
 		goto out_free_log;
 	}
 	mp->m_log->l_ailp = mp->m_ail;
@@ -413,7 +412,8 @@ xfs_log_mount(
 		if (readonly)
 			mp->m_flags |= XFS_MOUNT_RDONLY;
 		if (error) {
-			cmn_err(CE_WARN, "XFS: log mount/recovery failed: error %d", error);
+			xfs_warn(mp, "log mount/recovery failed: error %d",
+				error);
 			goto out_destroy_ail;
 		}
 	}
@@ -542,10 +542,8 @@ xfs_log_unmount_write(xfs_mount_t *mp)
 			 */
 		}
 
-		if (error) {
-			xfs_fs_cmn_err(CE_ALERT, mp,
-				"xfs_log_unmount: unmount record failed");
-		}
+		if (error)
+			xfs_alert(mp, "%s: unmount record failed", __func__);
 
 
 		spin_lock(&log->l_icloglock);
@@ -852,7 +850,7 @@ xlog_space_left(
 		 * In this case we just want to return the size of the
 		 * log as the amount of space left.
 		 */
-		xfs_fs_cmn_err(CE_ALERT, log->l_mp,
+		xfs_alert(log->l_mp,
 			"xlog_space_left: head behind tail\n"
 			"  tail_cycle = %d, tail_bytes = %d\n"
 			"  GH   cycle = %d, GH   bytes = %d",
@@ -1001,7 +999,7 @@ xlog_alloc_log(xfs_mount_t	*mp,
 
 	log = kmem_zalloc(sizeof(xlog_t), KM_MAYFAIL);
 	if (!log) {
-		xlog_warn("XFS: Log allocation failed: No memory!");
+		xfs_warn(mp, "Log allocation failed: No memory!");
 		goto out;
 	}
 
@@ -1029,24 +1027,24 @@ xlog_alloc_log(xfs_mount_t	*mp,
 	if (xfs_sb_version_hassector(&mp->m_sb)) {
 	        log2_size = mp->m_sb.sb_logsectlog;
 		if (log2_size < BBSHIFT) {
-			xlog_warn("XFS: Log sector size too small "
-				"(0x%x < 0x%x)", log2_size, BBSHIFT);
+			xfs_warn(mp, "Log sector size too small (0x%x < 0x%x)",
+				log2_size, BBSHIFT);
 			goto out_free_log;
 		}
 
 	        log2_size -= BBSHIFT;
 		if (log2_size > mp->m_sectbb_log) {
-			xlog_warn("XFS: Log sector size too large "
-				"(0x%x > 0x%x)", log2_size, mp->m_sectbb_log);
+			xfs_warn(mp, "Log sector size too large (0x%x > 0x%x)",
+				log2_size, mp->m_sectbb_log);
 			goto out_free_log;
 		}
 
 		/* for larger sector sizes, must have v2 or external log */
 		if (log2_size && log->l_logBBstart > 0 &&
 			    !xfs_sb_version_haslogv2(&mp->m_sb)) {
-
-			xlog_warn("XFS: log sector size (0x%x) invalid "
-				  "for configuration.", log2_size);
+			xfs_warn(mp,
+		"log sector size (0x%x) invalid for configuration.",
+				log2_size);
 			goto out_free_log;
 		}
 	}
@@ -1563,38 +1561,36 @@ xlog_print_tic_res(
 	    "SWAPEXT"
 	};
 
-	xfs_fs_cmn_err(CE_WARN, mp,
-			"xfs_log_write: reservation summary:\n"
-			"  trans type  = %s (%u)\n"
-			"  unit res    = %d bytes\n"
-			"  current res = %d bytes\n"
-			"  total reg   = %u bytes (o/flow = %u bytes)\n"
-			"  ophdrs      = %u (ophdr space = %u bytes)\n"
-			"  ophdr + reg = %u bytes\n"
-			"  num regions = %u\n",
-			((ticket->t_trans_type <= 0 ||
-			  ticket->t_trans_type > XFS_TRANS_TYPE_MAX) ?
-			  "bad-trans-type" : trans_type_str[ticket->t_trans_type-1]),
-			ticket->t_trans_type,
-			ticket->t_unit_res,
-			ticket->t_curr_res,
-			ticket->t_res_arr_sum, ticket->t_res_o_flow,
-			ticket->t_res_num_ophdrs, ophdr_spc,
-			ticket->t_res_arr_sum + 
-			ticket->t_res_o_flow + ophdr_spc,
-			ticket->t_res_num);
+	xfs_warn(mp,
+		"xfs_log_write: reservation summary:\n"
+		"  trans type  = %s (%u)\n"
+		"  unit res    = %d bytes\n"
+		"  current res = %d bytes\n"
+		"  total reg   = %u bytes (o/flow = %u bytes)\n"
+		"  ophdrs      = %u (ophdr space = %u bytes)\n"
+		"  ophdr + reg = %u bytes\n"
+		"  num regions = %u\n",
+		((ticket->t_trans_type <= 0 ||
+		  ticket->t_trans_type > XFS_TRANS_TYPE_MAX) ?
+		  "bad-trans-type" : trans_type_str[ticket->t_trans_type-1]),
+		ticket->t_trans_type,
+		ticket->t_unit_res,
+		ticket->t_curr_res,
+		ticket->t_res_arr_sum, ticket->t_res_o_flow,
+		ticket->t_res_num_ophdrs, ophdr_spc,
+		ticket->t_res_arr_sum +
+		ticket->t_res_o_flow + ophdr_spc,
+		ticket->t_res_num);
 
 	for (i = 0; i < ticket->t_res_num; i++) {
-		uint r_type = ticket->t_res_arr[i].r_type; 
-		cmn_err(CE_WARN,
-			    "region[%u]: %s - %u bytes\n",
-			    i, 
+		uint r_type = ticket->t_res_arr[i].r_type;
+		xfs_warn(mp, "region[%u]: %s - %u bytes\n", i,
 			    ((r_type <= 0 || r_type > XLOG_REG_TYPE_MAX) ?
 			    "bad-rtype" : res_type_str[r_type-1]),
 			    ticket->t_res_arr[i].r_len);
 	}
 
-	xfs_cmn_err(XFS_PTAG_LOGRES, CE_ALERT, mp,
+	xfs_alert_tag(mp, XFS_PTAG_LOGRES,
 		"xfs_log_write: reservation ran out. Need to up reservation");
 	xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
 }
@@ -1682,7 +1678,7 @@ xlog_write_setup_ophdr(
 	case XFS_LOG:
 		break;
 	default:
-		xfs_fs_cmn_err(CE_WARN, log->l_mp,
+		xfs_warn(log->l_mp,
 			"Bad XFS transaction clientid 0x%x in ticket 0x%p",
 			ophdr->oh_clientid, ticket);
 		return NULL;
@@ -2264,7 +2260,7 @@ xlog_state_do_callback(
 		if (repeats > 5000) {
 			flushcnt += repeats;
 			repeats = 0;
-			xfs_fs_cmn_err(CE_WARN, log->l_mp,
+			xfs_warn(log->l_mp,
 				"%s: possible infinite loop (%d iterations)",
 				__func__, flushcnt);
 		}
@@ -3052,10 +3048,8 @@ xfs_log_force(
 	int	error;
 
 	error = _xfs_log_force(mp, flags, NULL);
-	if (error) {
-		xfs_fs_cmn_err(CE_WARN, mp, "xfs_log_force: "
-			"error %d returned.", error);
-	}
+	if (error)
+		xfs_warn(mp, "%s: error %d returned.", __func__, error);
 }
 
 /*
@@ -3204,10 +3198,8 @@ xfs_log_force_lsn(
 	int	error;
 
 	error = _xfs_log_force_lsn(mp, lsn, flags, NULL);
-	if (error) {
-		xfs_fs_cmn_err(CE_WARN, mp, "xfs_log_force: "
-			"error %d returned.", error);
-	}
+	if (error)
+		xfs_warn(mp, "%s: error %d returned.", __func__, error);
 }
 
 /*
@@ -3412,7 +3404,7 @@ xlog_verify_dest_ptr(
 	}
 
 	if (!good_ptr)
-		xlog_panic("xlog_verify_dest_ptr: invalid ptr");
+		xfs_emerg(log->l_mp, "%s: invalid ptr", __func__);
 }
 
 STATIC void
@@ -3448,16 +3440,16 @@ xlog_verify_tail_lsn(xlog_t	    *log,
 	blocks =
 	    log->l_logBBsize - (log->l_prev_block - BLOCK_LSN(tail_lsn));
 	if (blocks < BTOBB(iclog->ic_offset)+BTOBB(log->l_iclog_hsize))
-	    xlog_panic("xlog_verify_tail_lsn: ran out of log space");
+		xfs_emerg(log->l_mp, "%s: ran out of log space", __func__);
     } else {
 	ASSERT(CYCLE_LSN(tail_lsn)+1 == log->l_prev_cycle);
 
 	if (BLOCK_LSN(tail_lsn) == log->l_prev_block)
-	    xlog_panic("xlog_verify_tail_lsn: tail wrapped");
+		xfs_emerg(log->l_mp, "%s: tail wrapped", __func__);
 
 	blocks = BLOCK_LSN(tail_lsn) - log->l_prev_block;
 	if (blocks < BTOBB(iclog->ic_offset) + 1)
-	    xlog_panic("xlog_verify_tail_lsn: ran out of log space");
+		xfs_emerg(log->l_mp, "%s: ran out of log space", __func__);
     }
 }	/* xlog_verify_tail_lsn */
 
@@ -3497,22 +3489,23 @@ xlog_verify_iclog(xlog_t	 *log,
 	icptr = log->l_iclog;
 	for (i=0; i < log->l_iclog_bufs; i++) {
 		if (icptr == NULL)
-			xlog_panic("xlog_verify_iclog: invalid ptr");
+			xfs_emerg(log->l_mp, "%s: invalid ptr", __func__);
 		icptr = icptr->ic_next;
 	}
 	if (icptr != log->l_iclog)
-		xlog_panic("xlog_verify_iclog: corrupt iclog ring");
+		xfs_emerg(log->l_mp, "%s: corrupt iclog ring", __func__);
 	spin_unlock(&log->l_icloglock);
 
 	/* check log magic numbers */
 	if (be32_to_cpu(iclog->ic_header.h_magicno) != XLOG_HEADER_MAGIC_NUM)
-		xlog_panic("xlog_verify_iclog: invalid magic num");
+		xfs_emerg(log->l_mp, "%s: invalid magic num", __func__);
 
 	ptr = (xfs_caddr_t) &iclog->ic_header;
 	for (ptr += BBSIZE; ptr < ((xfs_caddr_t)&iclog->ic_header) + count;
 	     ptr += BBSIZE) {
 		if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM)
-			xlog_panic("xlog_verify_iclog: unexpected magic num");
+			xfs_emerg(log->l_mp, "%s: unexpected magic num",
+				__func__);
 	}
 
 	/* check fields */
@@ -3542,9 +3535,10 @@ xlog_verify_iclog(xlog_t	 *log,
 			}
 		}
 		if (clientid != XFS_TRANSACTION && clientid != XFS_LOG)
-			cmn_err(CE_WARN, "xlog_verify_iclog: "
-				"invalid clientid %d op 0x%p offset 0x%lx",
-				clientid, ophead, (unsigned long)field_offset);
+			xfs_warn(log->l_mp,
+				"%s: invalid clientid %d op 0x%p offset 0x%lx",
+				__func__, clientid, ophead,
+				(unsigned long)field_offset);
 
 		/* check length */
 		field_offset = (__psint_t)
diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h
index d5f8be8..15dbf1f 100644
--- a/fs/xfs/xfs_log_priv.h
+++ b/fs/xfs/xfs_log_priv.h
@@ -87,10 +87,6 @@ static inline uint xlog_get_client_id(__be32 i)
 	return be32_to_cpu(i) >> 24;
 }
 
-#define xlog_panic(args...)	cmn_err(CE_PANIC, ## args)
-#define xlog_exit(args...)	cmn_err(CE_PANIC, ## args)
-#define xlog_warn(args...)	cmn_err(CE_WARN, ## args)
-
 /*
  * In core log state
  */
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index aa0ebb7..0c4a561 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -92,7 +92,7 @@ xlog_get_bp(
 	int		nbblks)
 {
 	if (!xlog_buf_bbcount_valid(log, nbblks)) {
-		xlog_warn("XFS: Invalid block length (0x%x) given for buffer",
+		xfs_warn(log->l_mp, "Invalid block length (0x%x) for buffer",
 			nbblks);
 		XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_HIGH, log->l_mp);
 		return NULL;
@@ -160,7 +160,7 @@ xlog_bread_noalign(
 	int		error;
 
 	if (!xlog_buf_bbcount_valid(log, nbblks)) {
-		xlog_warn("XFS: Invalid block length (0x%x) given for buffer",
+		xfs_warn(log->l_mp, "Invalid block length (0x%x) for buffer",
 			nbblks);
 		XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_HIGH, log->l_mp);
 		return EFSCORRUPTED;
@@ -219,7 +219,7 @@ xlog_bwrite(
 	int		error;
 
 	if (!xlog_buf_bbcount_valid(log, nbblks)) {
-		xlog_warn("XFS: Invalid block length (0x%x) given for buffer",
+		xfs_warn(log->l_mp, "Invalid block length (0x%x) for buffer",
 			nbblks);
 		XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_HIGH, log->l_mp);
 		return EFSCORRUPTED;
@@ -254,9 +254,9 @@ xlog_header_check_dump(
 	xfs_mount_t		*mp,
 	xlog_rec_header_t	*head)
 {
-	cmn_err(CE_DEBUG, "%s:  SB : uuid = %pU, fmt = %d\n",
+	xfs_debug(mp, "%s:  SB : uuid = %pU, fmt = %d\n",
 		__func__, &mp->m_sb.sb_uuid, XLOG_FMT);
-	cmn_err(CE_DEBUG, "    log : uuid = %pU, fmt = %d\n",
+	xfs_debug(mp, "    log : uuid = %pU, fmt = %d\n",
 		&head->h_fs_uuid, be32_to_cpu(head->h_fmt));
 }
 #else
@@ -279,15 +279,15 @@ xlog_header_check_recover(
 	 * a dirty log created in IRIX.
 	 */
 	if (unlikely(be32_to_cpu(head->h_fmt) != XLOG_FMT)) {
-		xlog_warn(
-	"XFS: dirty log written in incompatible format - can't recover");
+		xfs_warn(mp,
+	"dirty log written in incompatible format - can't recover");
 		xlog_header_check_dump(mp, head);
 		XFS_ERROR_REPORT("xlog_header_check_recover(1)",
 				 XFS_ERRLEVEL_HIGH, mp);
 		return XFS_ERROR(EFSCORRUPTED);
 	} else if (unlikely(!uuid_equal(&mp->m_sb.sb_uuid, &head->h_fs_uuid))) {
-		xlog_warn(
-	"XFS: dirty log entry has mismatched uuid - can't recover");
+		xfs_warn(mp,
+	"dirty log entry has mismatched uuid - can't recover");
 		xlog_header_check_dump(mp, head);
 		XFS_ERROR_REPORT("xlog_header_check_recover(2)",
 				 XFS_ERRLEVEL_HIGH, mp);
@@ -312,9 +312,9 @@ xlog_header_check_mount(
 		 * h_fs_uuid is nil, we assume this log was last mounted
 		 * by IRIX and continue.
 		 */
-		xlog_warn("XFS: nil uuid in log - IRIX style log");
+		xfs_warn(mp, "nil uuid in log - IRIX style log");
 	} else if (unlikely(!uuid_equal(&mp->m_sb.sb_uuid, &head->h_fs_uuid))) {
-		xlog_warn("XFS: log has mismatched uuid - can't recover");
+		xfs_warn(mp, "log has mismatched uuid - can't recover");
 		xlog_header_check_dump(mp, head);
 		XFS_ERROR_REPORT("xlog_header_check_mount",
 				 XFS_ERRLEVEL_HIGH, mp);
@@ -490,8 +490,8 @@ xlog_find_verify_log_record(
 	for (i = (*last_blk) - 1; i >= 0; i--) {
 		if (i < start_blk) {
 			/* valid log record not found */
-			xlog_warn(
-		"XFS: Log inconsistent (didn't find previous header)");
+			xfs_warn(log->l_mp,
+		"Log inconsistent (didn't find previous header)");
 			ASSERT(0);
 			error = XFS_ERROR(EIO);
 			goto out;
@@ -591,12 +591,12 @@ xlog_find_head(
 			 * mkfs etc write a dummy unmount record to a fresh
 			 * log so we can store the uuid in there
 			 */
-			xlog_warn("XFS: totally zeroed log");
+			xfs_warn(log->l_mp, "totally zeroed log");
 		}
 
 		return 0;
 	} else if (error) {
-		xlog_warn("XFS: empty log check failed");
+		xfs_warn(log->l_mp, "empty log check failed");
 		return error;
 	}
 
@@ -819,7 +819,7 @@ validate_head:
 	xlog_put_bp(bp);
 
 	if (error)
-	    xlog_warn("XFS: failed to find log head");
+		xfs_warn(log->l_mp, "failed to find log head");
 	return error;
 }
 
@@ -912,7 +912,7 @@ xlog_find_tail(
 		}
 	}
 	if (!found) {
-		xlog_warn("XFS: xlog_find_tail: couldn't find sync record");
+		xfs_warn(log->l_mp, "%s: couldn't find sync record", __func__);
 		ASSERT(0);
 		return XFS_ERROR(EIO);
 	}
@@ -1028,7 +1028,7 @@ done:
 	xlog_put_bp(bp);
 
 	if (error)
-		xlog_warn("XFS: failed to locate log tail");
+		xfs_warn(log->l_mp, "failed to locate log tail");
 	return error;
 }
 
@@ -1092,7 +1092,8 @@ xlog_find_zeroed(
 		 * the first block must be 1. If it's not, maybe we're
 		 * not looking at a log... Bail out.
 		 */
-		xlog_warn("XFS: Log inconsistent or not a log (last==0, first!=1)");
+		xfs_warn(log->l_mp,
+			"Log inconsistent or not a log (last==0, first!=1)");
 		return XFS_ERROR(EINVAL);
 	}
 
@@ -1506,8 +1507,8 @@ xlog_recover_add_to_trans(
 	if (list_empty(&trans->r_itemq)) {
 		/* we need to catch log corruptions here */
 		if (*(uint *)dp != XFS_TRANS_HEADER_MAGIC) {
-			xlog_warn("XFS: xlog_recover_add_to_trans: "
-				  "bad header magic number");
+			xfs_warn(log->l_mp, "%s: bad header magic number",
+				__func__);
 			ASSERT(0);
 			return XFS_ERROR(EIO);
 		}
@@ -1534,8 +1535,8 @@ xlog_recover_add_to_trans(
 	if (item->ri_total == 0) {		/* first region to be added */
 		if (in_f->ilf_size == 0 ||
 		    in_f->ilf_size > XLOG_MAX_REGIONS_IN_ITEM) {
-			xlog_warn(
-	"XFS: bad number of regions (%d) in inode log format",
+			xfs_warn(log->l_mp,
+		"bad number of regions (%d) in inode log format",
 				  in_f->ilf_size);
 			ASSERT(0);
 			return XFS_ERROR(EIO);
@@ -1592,8 +1593,9 @@ xlog_recover_reorder_trans(
 			list_move_tail(&item->ri_list, &trans->r_itemq);
 			break;
 		default:
-			xlog_warn(
-	"XFS: xlog_recover_reorder_trans: unrecognized type of log operation");
+			xfs_warn(log->l_mp,
+				"%s: unrecognized type of log operation",
+				__func__);
 			ASSERT(0);
 			return XFS_ERROR(EIO);
 		}
@@ -1803,8 +1805,9 @@ xlog_recover_do_inode_buffer(
 		logged_nextp = item->ri_buf[item_index].i_addr +
 				next_unlinked_offset - reg_buf_offset;
 		if (unlikely(*logged_nextp == 0)) {
-			xfs_fs_cmn_err(CE_ALERT, mp,
-				"bad inode buffer log record (ptr = 0x%p, bp = 0x%p).  XFS trying to replay bad (0) inode di_next_unlinked field",
+			xfs_alert(mp,
+		"Bad inode buffer log record (ptr = 0x%p, bp = 0x%p). "
+		"Trying to replay bad (0) inode di_next_unlinked field.",
 				item, bp);
 			XFS_ERROR_REPORT("xlog_recover_do_inode_buf",
 					 XFS_ERRLEVEL_LOW, mp);
@@ -1863,17 +1866,17 @@ xlog_recover_do_reg_buffer(
 		if (buf_f->blf_flags &
 		   (XFS_BLF_UDQUOT_BUF|XFS_BLF_PDQUOT_BUF|XFS_BLF_GDQUOT_BUF)) {
 			if (item->ri_buf[i].i_addr == NULL) {
-				cmn_err(CE_ALERT,
+				xfs_alert(mp,
 					"XFS: NULL dquot in %s.", __func__);
 				goto next;
 			}
 			if (item->ri_buf[i].i_len < sizeof(xfs_disk_dquot_t)) {
-				cmn_err(CE_ALERT,
+				xfs_alert(mp,
 					"XFS: dquot too small (%d) in %s.",
 					item->ri_buf[i].i_len, __func__);
 				goto next;
 			}
-			error = xfs_qm_dqcheck(item->ri_buf[i].i_addr,
+			error = xfs_qm_dqcheck(mp, item->ri_buf[i].i_addr,
 					       -1, 0, XFS_QMOPT_DOWARN,
 					       "dquot_buf_recover");
 			if (error)
@@ -1898,6 +1901,7 @@ xlog_recover_do_reg_buffer(
  */
 int
 xfs_qm_dqcheck(
+	struct xfs_mount *mp,
 	xfs_disk_dquot_t *ddq,
 	xfs_dqid_t	 id,
 	uint		 type,	  /* used only when IO_dorepair is true */
@@ -1924,14 +1928,14 @@ xfs_qm_dqcheck(
 	 */
 	if (be16_to_cpu(ddq->d_magic) != XFS_DQUOT_MAGIC) {
 		if (flags & XFS_QMOPT_DOWARN)
-			cmn_err(CE_ALERT,
+			xfs_alert(mp,
 			"%s : XFS dquot ID 0x%x, magic 0x%x != 0x%x",
 			str, id, be16_to_cpu(ddq->d_magic), XFS_DQUOT_MAGIC);
 		errs++;
 	}
 	if (ddq->d_version != XFS_DQUOT_VERSION) {
 		if (flags & XFS_QMOPT_DOWARN)
-			cmn_err(CE_ALERT,
+			xfs_alert(mp,
 			"%s : XFS dquot ID 0x%x, version 0x%x != 0x%x",
 			str, id, ddq->d_version, XFS_DQUOT_VERSION);
 		errs++;
@@ -1941,7 +1945,7 @@ xfs_qm_dqcheck(
 	    ddq->d_flags != XFS_DQ_PROJ &&
 	    ddq->d_flags != XFS_DQ_GROUP) {
 		if (flags & XFS_QMOPT_DOWARN)
-			cmn_err(CE_ALERT,
+			xfs_alert(mp,
 			"%s : XFS dquot ID 0x%x, unknown flags 0x%x",
 			str, id, ddq->d_flags);
 		errs++;
@@ -1949,7 +1953,7 @@ xfs_qm_dqcheck(
 
 	if (id != -1 && id != be32_to_cpu(ddq->d_id)) {
 		if (flags & XFS_QMOPT_DOWARN)
-			cmn_err(CE_ALERT,
+			xfs_alert(mp,
 			"%s : ondisk-dquot 0x%p, ID mismatch: "
 			"0x%x expected, found id 0x%x",
 			str, ddq, id, be32_to_cpu(ddq->d_id));
@@ -1962,9 +1966,8 @@ xfs_qm_dqcheck(
 				be64_to_cpu(ddq->d_blk_softlimit)) {
 			if (!ddq->d_btimer) {
 				if (flags & XFS_QMOPT_DOWARN)
-					cmn_err(CE_ALERT,
-					"%s : Dquot ID 0x%x (0x%p) "
-					"BLK TIMER NOT STARTED",
+					xfs_alert(mp,
+			"%s : Dquot ID 0x%x (0x%p) BLK TIMER NOT STARTED",
 					str, (int)be32_to_cpu(ddq->d_id), ddq);
 				errs++;
 			}
@@ -1974,9 +1977,8 @@ xfs_qm_dqcheck(
 				be64_to_cpu(ddq->d_ino_softlimit)) {
 			if (!ddq->d_itimer) {
 				if (flags & XFS_QMOPT_DOWARN)
-					cmn_err(CE_ALERT,
-					"%s : Dquot ID 0x%x (0x%p) "
-					"INODE TIMER NOT STARTED",
+					xfs_alert(mp,
+			"%s : Dquot ID 0x%x (0x%p) INODE TIMER NOT STARTED",
 					str, (int)be32_to_cpu(ddq->d_id), ddq);
 				errs++;
 			}
@@ -1986,9 +1988,8 @@ xfs_qm_dqcheck(
 				be64_to_cpu(ddq->d_rtb_softlimit)) {
 			if (!ddq->d_rtbtimer) {
 				if (flags & XFS_QMOPT_DOWARN)
-					cmn_err(CE_ALERT,
-					"%s : Dquot ID 0x%x (0x%p) "
-					"RTBLK TIMER NOT STARTED",
+					xfs_alert(mp,
+			"%s : Dquot ID 0x%x (0x%p) RTBLK TIMER NOT STARTED",
 					str, (int)be32_to_cpu(ddq->d_id), ddq);
 				errs++;
 			}
@@ -1999,7 +2000,7 @@ xfs_qm_dqcheck(
 		return errs;
 
 	if (flags & XFS_QMOPT_DOWARN)
-		cmn_err(CE_NOTE, "Re-initializing dquot ID 0x%x", id);
+		xfs_notice(mp, "Re-initializing dquot ID 0x%x", id);
 
 	/*
 	 * Typically, a repair is only requested by quotacheck.
@@ -2218,9 +2219,9 @@ xlog_recover_inode_pass2(
 	 */
 	if (unlikely(be16_to_cpu(dip->di_magic) != XFS_DINODE_MAGIC)) {
 		xfs_buf_relse(bp);
-		xfs_fs_cmn_err(CE_ALERT, mp,
-			"xfs_inode_recover: Bad inode magic number, dino ptr = 0x%p, dino bp = 0x%p, ino = %Ld",
-			dip, bp, in_f->ilf_ino);
+		xfs_alert(mp,
+	"%s: Bad inode magic number, dip = 0x%p, dino bp = 0x%p, ino = %Ld",
+			__func__, dip, bp, in_f->ilf_ino);
 		XFS_ERROR_REPORT("xlog_recover_inode_pass2(1)",
 				 XFS_ERRLEVEL_LOW, mp);
 		error = EFSCORRUPTED;
@@ -2229,9 +2230,9 @@ xlog_recover_inode_pass2(
 	dicp = item->ri_buf[1].i_addr;
 	if (unlikely(dicp->di_magic != XFS_DINODE_MAGIC)) {
 		xfs_buf_relse(bp);
-		xfs_fs_cmn_err(CE_ALERT, mp,
-			"xfs_inode_recover: Bad inode log record, rec ptr 0x%p, ino %Ld",
-			item, in_f->ilf_ino);
+		xfs_alert(mp,
+			"%s: Bad inode log record, rec ptr 0x%p, ino %Ld",
+			__func__, item, in_f->ilf_ino);
 		XFS_ERROR_REPORT("xlog_recover_inode_pass2(2)",
 				 XFS_ERRLEVEL_LOW, mp);
 		error = EFSCORRUPTED;
@@ -2263,9 +2264,10 @@ xlog_recover_inode_pass2(
 			XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(3)",
 					 XFS_ERRLEVEL_LOW, mp, dicp);
 			xfs_buf_relse(bp);
-			xfs_fs_cmn_err(CE_ALERT, mp,
-				"xfs_inode_recover: Bad regular inode log record, rec ptr 0x%p, ino ptr = 0x%p, ino bp = 0x%p, ino %Ld",
-				item, dip, bp, in_f->ilf_ino);
+			xfs_alert(mp,
+		"%s: Bad regular inode log record, rec ptr 0x%p, "
+		"ino ptr = 0x%p, ino bp = 0x%p, ino %Ld",
+				__func__, item, dip, bp, in_f->ilf_ino);
 			error = EFSCORRUPTED;
 			goto error;
 		}
@@ -2276,9 +2278,10 @@ xlog_recover_inode_pass2(
 			XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(4)",
 					     XFS_ERRLEVEL_LOW, mp, dicp);
 			xfs_buf_relse(bp);
-			xfs_fs_cmn_err(CE_ALERT, mp,
-				"xfs_inode_recover: Bad dir inode log record, rec ptr 0x%p, ino ptr = 0x%p, ino bp = 0x%p, ino %Ld",
-				item, dip, bp, in_f->ilf_ino);
+			xfs_alert(mp,
+		"%s: Bad dir inode log record, rec ptr 0x%p, "
+		"ino ptr = 0x%p, ino bp = 0x%p, ino %Ld",
+				__func__, item, dip, bp, in_f->ilf_ino);
 			error = EFSCORRUPTED;
 			goto error;
 		}
@@ -2287,9 +2290,10 @@ xlog_recover_inode_pass2(
 		XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(5)",
 				     XFS_ERRLEVEL_LOW, mp, dicp);
 		xfs_buf_relse(bp);
-		xfs_fs_cmn_err(CE_ALERT, mp,
-			"xfs_inode_recover: Bad inode log record, rec ptr 0x%p, dino ptr 0x%p, dino bp 0x%p, ino %Ld, total extents = %d, nblocks = %Ld",
-			item, dip, bp, in_f->ilf_ino,
+		xfs_alert(mp,
+	"%s: Bad inode log record, rec ptr 0x%p, dino ptr 0x%p, "
+	"dino bp 0x%p, ino %Ld, total extents = %d, nblocks = %Ld",
+			__func__, item, dip, bp, in_f->ilf_ino,
 			dicp->di_nextents + dicp->di_anextents,
 			dicp->di_nblocks);
 		error = EFSCORRUPTED;
@@ -2299,8 +2303,9 @@ xlog_recover_inode_pass2(
 		XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(6)",
 				     XFS_ERRLEVEL_LOW, mp, dicp);
 		xfs_buf_relse(bp);
-		xfs_fs_cmn_err(CE_ALERT, mp,
-			"xfs_inode_recover: Bad inode log rec ptr 0x%p, dino ptr 0x%p, dino bp 0x%p, ino %Ld, forkoff 0x%x",
+		xfs_alert(mp,
+	"%s: Bad inode log record, rec ptr 0x%p, dino ptr 0x%p, "
+	"dino bp 0x%p, ino %Ld, forkoff 0x%x", __func__,
 			item, dip, bp, in_f->ilf_ino, dicp->di_forkoff);
 		error = EFSCORRUPTED;
 		goto error;
@@ -2309,9 +2314,9 @@ xlog_recover_inode_pass2(
 		XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(7)",
 				     XFS_ERRLEVEL_LOW, mp, dicp);
 		xfs_buf_relse(bp);
-		xfs_fs_cmn_err(CE_ALERT, mp,
-			"xfs_inode_recover: Bad inode log record length %d, rec ptr 0x%p",
-			item->ri_buf[1].i_len, item);
+		xfs_alert(mp,
+			"%s: Bad inode log record length %d, rec ptr 0x%p",
+			__func__, item->ri_buf[1].i_len, item);
 		error = EFSCORRUPTED;
 		goto error;
 	}
@@ -2398,7 +2403,7 @@ xlog_recover_inode_pass2(
 			break;
 
 		default:
-			xlog_warn("XFS: xlog_recover_inode_pass2: Invalid flag");
+			xfs_warn(log->l_mp, "%s: Invalid flag", __func__);
 			ASSERT(0);
 			xfs_buf_relse(bp);
 			error = EIO;
@@ -2467,13 +2472,11 @@ xlog_recover_dquot_pass2(
 
 	recddq = item->ri_buf[1].i_addr;
 	if (recddq == NULL) {
-		cmn_err(CE_ALERT,
-			"XFS: NULL dquot in %s.", __func__);
+		xfs_alert(log->l_mp, "NULL dquot in %s.", __func__);
 		return XFS_ERROR(EIO);
 	}
 	if (item->ri_buf[1].i_len < sizeof(xfs_disk_dquot_t)) {
-		cmn_err(CE_ALERT,
-			"XFS: dquot too small (%d) in %s.",
+		xfs_alert(log->l_mp, "dquot too small (%d) in %s.",
 			item->ri_buf[1].i_len, __func__);
 		return XFS_ERROR(EIO);
 	}
@@ -2498,12 +2501,10 @@ xlog_recover_dquot_pass2(
 	 */
 	dq_f = item->ri_buf[0].i_addr;
 	ASSERT(dq_f);
-	if ((error = xfs_qm_dqcheck(recddq,
-			   dq_f->qlf_id,
-			   0, XFS_QMOPT_DOWARN,
-			   "xlog_recover_dquot_pass2 (log copy)"))) {
+	error = xfs_qm_dqcheck(mp, recddq, dq_f->qlf_id, 0, XFS_QMOPT_DOWARN,
+			   "xlog_recover_dquot_pass2 (log copy)");
+	if (error)
 		return XFS_ERROR(EIO);
-	}
 	ASSERT(dq_f->qlf_len == 1);
 
 	error = xfs_read_buf(mp, mp->m_ddev_targp,
@@ -2523,8 +2524,9 @@ xlog_recover_dquot_pass2(
 	 * was among a chunk of dquots created earlier, and we did some
 	 * minimal initialization then.
 	 */
-	if (xfs_qm_dqcheck(ddq, dq_f->qlf_id, 0, XFS_QMOPT_DOWARN,
-			   "xlog_recover_dquot_pass2")) {
+	error = xfs_qm_dqcheck(mp, ddq, dq_f->qlf_id, 0, XFS_QMOPT_DOWARN,
+			   "xlog_recover_dquot_pass2");
+	if (error) {
 		xfs_buf_relse(bp);
 		return XFS_ERROR(EIO);
 	}
@@ -2676,9 +2678,8 @@ xlog_recover_commit_pass1(
 		/* nothing to do in pass 1 */
 		return 0;
 	default:
-		xlog_warn(
-	"XFS: invalid item type (%d) xlog_recover_commit_pass1",
-			ITEM_TYPE(item));
+		xfs_warn(log->l_mp, "%s: invalid item type (%d)",
+			__func__, ITEM_TYPE(item));
 		ASSERT(0);
 		return XFS_ERROR(EIO);
 	}
@@ -2707,9 +2708,8 @@ xlog_recover_commit_pass2(
 		/* nothing to do in pass2 */
 		return 0;
 	default:
-		xlog_warn(
-	"XFS: invalid item type (%d) xlog_recover_commit_pass2",
-			ITEM_TYPE(item));
+		xfs_warn(log->l_mp, "%s: invalid item type (%d)",
+			__func__, ITEM_TYPE(item));
 		ASSERT(0);
 		return XFS_ERROR(EIO);
 	}
@@ -2751,10 +2751,11 @@ xlog_recover_commit_trans(
 
 STATIC int
 xlog_recover_unmount_trans(
+	struct log		*log,
 	xlog_recover_t		*trans)
 {
 	/* Do nothing now */
-	xlog_warn("XFS: xlog_recover_unmount_trans: Unmount LR");
+	xfs_warn(log->l_mp, "%s: Unmount LR", __func__);
 	return 0;
 }
 
@@ -2797,8 +2798,8 @@ xlog_recover_process_data(
 		dp += sizeof(xlog_op_header_t);
 		if (ohead->oh_clientid != XFS_TRANSACTION &&
 		    ohead->oh_clientid != XFS_LOG) {
-			xlog_warn(
-		"XFS: xlog_recover_process_data: bad clientid");
+			xfs_warn(log->l_mp, "%s: bad clientid 0x%x",
+					__func__, ohead->oh_clientid);
 			ASSERT(0);
 			return (XFS_ERROR(EIO));
 		}
@@ -2811,8 +2812,8 @@ xlog_recover_process_data(
 					be64_to_cpu(rhead->h_lsn));
 		} else {
 			if (dp + be32_to_cpu(ohead->oh_len) > lp) {
-				xlog_warn(
-			"XFS: xlog_recover_process_data: bad length");
+				xfs_warn(log->l_mp, "%s: bad length 0x%x",
+					__func__, be32_to_cpu(ohead->oh_len));
 				WARN_ON(1);
 				return (XFS_ERROR(EIO));
 			}
@@ -2825,7 +2826,7 @@ xlog_recover_process_data(
 								trans, pass);
 				break;
 			case XLOG_UNMOUNT_TRANS:
-				error = xlog_recover_unmount_trans(trans);
+				error = xlog_recover_unmount_trans(log, trans);
 				break;
 			case XLOG_WAS_CONT_TRANS:
 				error = xlog_recover_add_to_cont_trans(log,
@@ -2833,8 +2834,8 @@ xlog_recover_process_data(
 						be32_to_cpu(ohead->oh_len));
 				break;
 			case XLOG_START_TRANS:
-				xlog_warn(
-			"XFS: xlog_recover_process_data: bad transaction");
+				xfs_warn(log->l_mp, "%s: bad transaction",
+					__func__);
 				ASSERT(0);
 				error = XFS_ERROR(EIO);
 				break;
@@ -2844,8 +2845,8 @@ xlog_recover_process_data(
 						dp, be32_to_cpu(ohead->oh_len));
 				break;
 			default:
-				xlog_warn(
-			"XFS: xlog_recover_process_data: bad flag");
+				xfs_warn(log->l_mp, "%s: bad flag 0x%x",
+					__func__, flags);
 				ASSERT(0);
 				error = XFS_ERROR(EIO);
 				break;
@@ -3030,8 +3031,7 @@ xlog_recover_clear_agi_bucket(
 out_abort:
 	xfs_trans_cancel(tp, XFS_TRANS_ABORT);
 out_error:
-	xfs_fs_cmn_err(CE_WARN, mp, "xlog_recover_clear_agi_bucket: "
-			"failed to clear agi %d. Continuing.", agno);
+	xfs_warn(mp, "%s: failed to clear agi %d. Continuing.", __func__, agno);
 	return;
 }
 
@@ -3282,7 +3282,7 @@ xlog_valid_rec_header(
 	if (unlikely(
 	    (!rhead->h_version ||
 	    (be32_to_cpu(rhead->h_version) & (~XLOG_VERSION_OKBITS))))) {
-		xlog_warn("XFS: %s: unrecognised log version (%d).",
+		xfs_warn(log->l_mp, "%s: unrecognised log version (%d).",
 			__func__, be32_to_cpu(rhead->h_version));
 		return XFS_ERROR(EIO);
 	}
@@ -3740,10 +3740,9 @@ xlog_recover(
 			return error;
 		}
 
-		cmn_err(CE_NOTE,
-			"Starting XFS recovery on filesystem: %s (logdev: %s)",
-			log->l_mp->m_fsname, log->l_mp->m_logname ?
-			log->l_mp->m_logname : "internal");
+		xfs_notice(log->l_mp, "Starting recovery (logdev: %s)",
+				log->l_mp->m_logname ? log->l_mp->m_logname
+						     : "internal");
 
 		error = xlog_do_recover(log, head_blk, tail_blk);
 		log->l_flags |= XLOG_RECOVERY_NEEDED;
@@ -3776,9 +3775,7 @@ xlog_recover_finish(
 		int	error;
 		error = xlog_recover_process_efis(log);
 		if (error) {
-			cmn_err(CE_ALERT,
-				"Failed to recover EFIs on filesystem: %s",
-				log->l_mp->m_fsname);
+			xfs_alert(log->l_mp, "Failed to recover EFIs");
 			return error;
 		}
 		/*
@@ -3793,15 +3790,12 @@ xlog_recover_finish(
 
 		xlog_recover_check_summary(log);
 
-		cmn_err(CE_NOTE,
-			"Ending XFS recovery on filesystem: %s (logdev: %s)",
-			log->l_mp->m_fsname, log->l_mp->m_logname ?
-			log->l_mp->m_logname : "internal");
+		xfs_notice(log->l_mp, "Ending recovery (logdev: %s)",
+				log->l_mp->m_logname ? log->l_mp->m_logname
+						     : "internal");
 		log->l_flags &= ~XLOG_RECOVERY_NEEDED;
 	} else {
-		cmn_err(CE_DEBUG,
-			"Ending clean XFS mount for filesystem: %s\n",
-			log->l_mp->m_fsname);
+		xfs_info(log->l_mp, "Ending clean mount");
 	}
 	return 0;
 }
@@ -3834,10 +3828,8 @@ xlog_recover_check_summary(
 	for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) {
 		error = xfs_read_agf(mp, NULL, agno, 0, &agfbp);
 		if (error) {
-			xfs_fs_cmn_err(CE_ALERT, mp,
-					"xlog_recover_check_summary(agf)"
-					"agf read failed agno %d error %d",
-							agno, error);
+			xfs_alert(mp, "%s agf read failed agno %d error %d",
+						__func__, agno, error);
 		} else {
 			agfp = XFS_BUF_TO_AGF(agfbp);
 			freeblks += be32_to_cpu(agfp->agf_freeblks) +
@@ -3846,7 +3838,10 @@ xlog_recover_check_summary(
 		}
 
 		error = xfs_read_agi(mp, NULL, agno, &agibp);
-		if (!error) {
+		if (error) {
+			xfs_alert(mp, "%s agi read failed agno %d error %d",
+						__func__, agno, error);
+		} else {
 			struct xfs_agi	*agi = XFS_BUF_TO_AGI(agibp);
 
 			itotal += be32_to_cpu(agi->agi_count);
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index d447aef..bb3f9a7 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -133,9 +133,7 @@ xfs_uuid_mount(
 		return 0;
 
 	if (uuid_is_nil(uuid)) {
-		cmn_err(CE_WARN,
-			"XFS: Filesystem %s has nil UUID - can't mount",
-			mp->m_fsname);
+		xfs_warn(mp, "Filesystem has nil UUID - can't mount");
 		return XFS_ERROR(EINVAL);
 	}
 
@@ -163,8 +161,7 @@ xfs_uuid_mount(
 
  out_duplicate:
 	mutex_unlock(&xfs_uuid_table_mutex);
-	cmn_err(CE_WARN, "XFS: Filesystem %s has duplicate UUID - can't mount",
-			 mp->m_fsname);
+	xfs_warn(mp, "Filesystem has duplicate UUID - can't mount");
 	return XFS_ERROR(EINVAL);
 }
 
@@ -311,6 +308,8 @@ xfs_mount_validate_sb(
 	xfs_sb_t	*sbp,
 	int		flags)
 {
+	int		loud = !(flags & XFS_MFSI_QUIET);
+
 	/*
 	 * If the log device and data device have the
 	 * same device number, the log is internal.
@@ -319,28 +318,32 @@ xfs_mount_validate_sb(
 	 * a volume filesystem in a non-volume manner.
 	 */
 	if (sbp->sb_magicnum != XFS_SB_MAGIC) {
-		xfs_fs_mount_cmn_err(flags, "bad magic number");
+		if (loud)
+			xfs_warn(mp, "bad magic number");
 		return XFS_ERROR(EWRONGFS);
 	}
 
 	if (!xfs_sb_good_version(sbp)) {
-		xfs_fs_mount_cmn_err(flags, "bad version");
+		if (loud)
+			xfs_warn(mp, "bad version");
 		return XFS_ERROR(EWRONGFS);
 	}
 
 	if (unlikely(
 	    sbp->sb_logstart == 0 && mp->m_logdev_targp == mp->m_ddev_targp)) {
-		xfs_fs_mount_cmn_err(flags,
-			"filesystem is marked as having an external log; "
-			"specify logdev on the\nmount command line.");
+		if (loud)
+			xfs_warn(mp,
+		"filesystem is marked as having an external log; "
+		"specify logdev on the mount command line.");
 		return XFS_ERROR(EINVAL);
 	}
 
 	if (unlikely(
 	    sbp->sb_logstart != 0 && mp->m_logdev_targp != mp->m_ddev_targp)) {
-		xfs_fs_mount_cmn_err(flags,
-			"filesystem is marked as having an internal log; "
-			"do not specify logdev on\nthe mount command line.");
+		if (loud)
+			xfs_warn(mp,
+		"filesystem is marked as having an internal log; "
+		"do not specify logdev on the mount command line.");
 		return XFS_ERROR(EINVAL);
 	}
 
@@ -369,7 +372,8 @@ xfs_mount_validate_sb(
 	    (sbp->sb_rextsize * sbp->sb_blocksize > XFS_MAX_RTEXTSIZE)	||
 	    (sbp->sb_rextsize * sbp->sb_blocksize < XFS_MIN_RTEXTSIZE)	||
 	    (sbp->sb_imax_pct > 100 /* zero sb_imax_pct is valid */))) {
-		xfs_fs_mount_cmn_err(flags, "SB sanity check 1 failed");
+		if (loud)
+			xfs_warn(mp, "SB sanity check 1 failed");
 		return XFS_ERROR(EFSCORRUPTED);
 	}
 
@@ -382,7 +386,8 @@ xfs_mount_validate_sb(
 	     (xfs_drfsbno_t)sbp->sb_agcount * sbp->sb_agblocks ||
 	    sbp->sb_dblocks < (xfs_drfsbno_t)(sbp->sb_agcount - 1) *
 			      sbp->sb_agblocks + XFS_MIN_AG_BLOCKS)) {
-		xfs_fs_mount_cmn_err(flags, "SB sanity check 2 failed");
+		if (loud)
+			xfs_warn(mp, "SB sanity check 2 failed");
 		return XFS_ERROR(EFSCORRUPTED);
 	}
 
@@ -390,12 +395,12 @@ xfs_mount_validate_sb(
 	 * Until this is fixed only page-sized or smaller data blocks work.
 	 */
 	if (unlikely(sbp->sb_blocksize > PAGE_SIZE)) {
-		xfs_fs_mount_cmn_err(flags,
-			"file system with blocksize %d bytes",
-			sbp->sb_blocksize);
-		xfs_fs_mount_cmn_err(flags,
-			"only pagesize (%ld) or less will currently work.",
-			PAGE_SIZE);
+		if (loud) {
+			xfs_warn(mp,
+		"File system with blocksize %d bytes. "
+		"Only pagesize (%ld) or less will currently work.",
+				sbp->sb_blocksize, PAGE_SIZE);
+		}
 		return XFS_ERROR(ENOSYS);
 	}
 
@@ -409,21 +414,23 @@ xfs_mount_validate_sb(
 	case 2048:
 		break;
 	default:
-		xfs_fs_mount_cmn_err(flags,
-			"inode size of %d bytes not supported",
-			sbp->sb_inodesize);
+		if (loud)
+			xfs_warn(mp, "inode size of %d bytes not supported",
+				sbp->sb_inodesize);
 		return XFS_ERROR(ENOSYS);
 	}
 
 	if (xfs_sb_validate_fsb_count(sbp, sbp->sb_dblocks) ||
 	    xfs_sb_validate_fsb_count(sbp, sbp->sb_rblocks)) {
-		xfs_fs_mount_cmn_err(flags,
-			"file system too large to be mounted on this system.");
+		if (loud)
+			xfs_warn(mp,
+		"file system too large to be mounted on this system.");
 		return XFS_ERROR(EFBIG);
 	}
 
 	if (unlikely(sbp->sb_inprogress)) {
-		xfs_fs_mount_cmn_err(flags, "file system busy");
+		if (loud)
+			xfs_warn(mp, "file system busy");
 		return XFS_ERROR(EFSCORRUPTED);
 	}
 
@@ -431,8 +438,9 @@ xfs_mount_validate_sb(
 	 * Version 1 directory format has never worked on Linux.
 	 */
 	if (unlikely(!xfs_sb_version_hasdirv2(sbp))) {
-		xfs_fs_mount_cmn_err(flags,
-			"file system using version 1 directory format");
+		if (loud)
+			xfs_warn(mp,
+				"file system using version 1 directory format");
 		return XFS_ERROR(ENOSYS);
 	}
 
@@ -673,6 +681,7 @@ xfs_readsb(xfs_mount_t *mp, int flags)
 	unsigned int	sector_size;
 	xfs_buf_t	*bp;
 	int		error;
+	int		loud = !(flags & XFS_MFSI_QUIET);
 
 	ASSERT(mp->m_sb_bp == NULL);
 	ASSERT(mp->m_ddev_targp != NULL);
@@ -688,7 +697,8 @@ reread:
 	bp = xfs_buf_read_uncached(mp, mp->m_ddev_targp,
 					XFS_SB_DADDR, sector_size, 0);
 	if (!bp) {
-		xfs_fs_mount_cmn_err(flags, "SB buffer read failed");
+		if (loud)
+			xfs_warn(mp, "SB buffer read failed");
 		return EIO;
 	}
 
@@ -699,7 +709,8 @@ reread:
 	xfs_sb_from_disk(&mp->m_sb, XFS_BUF_TO_SBP(bp));
 	error = xfs_mount_validate_sb(mp, &(mp->m_sb), flags);
 	if (error) {
-		xfs_fs_mount_cmn_err(flags, "SB validate failed");
+		if (loud)
+			xfs_warn(mp, "SB validate failed");
 		goto release_buf;
 	}
 
@@ -707,9 +718,9 @@ reread:
 	 * We must be able to do sector-sized and sector-aligned IO.
 	 */
 	if (sector_size > mp->m_sb.sb_sectsize) {
-		xfs_fs_mount_cmn_err(flags,
-			"device supports only %u byte sectors (not %u)",
-			sector_size, mp->m_sb.sb_sectsize);
+		if (loud)
+			xfs_warn(mp, "device supports %u byte sectors (not %u)",
+				sector_size, mp->m_sb.sb_sectsize);
 		error = ENOSYS;
 		goto release_buf;
 	}
@@ -853,8 +864,7 @@ xfs_update_alignment(xfs_mount_t *mp)
 		if ((BBTOB(mp->m_dalign) & mp->m_blockmask) ||
 		    (BBTOB(mp->m_swidth) & mp->m_blockmask)) {
 			if (mp->m_flags & XFS_MOUNT_RETERR) {
-				cmn_err(CE_WARN,
-					"XFS: alignment check 1 failed");
+				xfs_warn(mp, "alignment check 1 failed");
 				return XFS_ERROR(EINVAL);
 			}
 			mp->m_dalign = mp->m_swidth = 0;
@@ -867,8 +877,9 @@ xfs_update_alignment(xfs_mount_t *mp)
 				if (mp->m_flags & XFS_MOUNT_RETERR) {
 					return XFS_ERROR(EINVAL);
 				}
-				xfs_fs_cmn_err(CE_WARN, mp,
-"stripe alignment turned off: sunit(%d)/swidth(%d) incompatible with agsize(%d)",
+				xfs_warn(mp,
+		"stripe alignment turned off: sunit(%d)/swidth(%d) "
+		"incompatible with agsize(%d)",
 					mp->m_dalign, mp->m_swidth,
 					sbp->sb_agblocks);
 
@@ -878,9 +889,9 @@ xfs_update_alignment(xfs_mount_t *mp)
 				mp->m_swidth = XFS_BB_TO_FSBT(mp, mp->m_swidth);
 			} else {
 				if (mp->m_flags & XFS_MOUNT_RETERR) {
-					xfs_fs_cmn_err(CE_WARN, mp,
-"stripe alignment turned off: sunit(%d) less than bsize(%d)",
-                                        	mp->m_dalign,
+					xfs_warn(mp,
+		"stripe alignment turned off: sunit(%d) less than bsize(%d)",
+						mp->m_dalign,
 						mp->m_blockmask +1);
 					return XFS_ERROR(EINVAL);
 				}
@@ -1026,14 +1037,14 @@ xfs_check_sizes(xfs_mount_t *mp)
 
 	d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks);
 	if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_dblocks) {
-		cmn_err(CE_WARN, "XFS: filesystem size mismatch detected");
+		xfs_warn(mp, "filesystem size mismatch detected");
 		return XFS_ERROR(EFBIG);
 	}
 	bp = xfs_buf_read_uncached(mp, mp->m_ddev_targp,
 					d - XFS_FSS_TO_BB(mp, 1),
 					BBTOB(XFS_FSS_TO_BB(mp, 1)), 0);
 	if (!bp) {
-		cmn_err(CE_WARN, "XFS: last sector read failed");
+		xfs_warn(mp, "last sector read failed");
 		return EIO;
 	}
 	xfs_buf_relse(bp);
@@ -1041,14 +1052,14 @@ xfs_check_sizes(xfs_mount_t *mp)
 	if (mp->m_logdev_targp != mp->m_ddev_targp) {
 		d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks);
 		if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_logblocks) {
-			cmn_err(CE_WARN, "XFS: log size mismatch detected");
+			xfs_warn(mp, "log size mismatch detected");
 			return XFS_ERROR(EFBIG);
 		}
 		bp = xfs_buf_read_uncached(mp, mp->m_logdev_targp,
 					d - XFS_FSB_TO_BB(mp, 1),
 					XFS_FSB_TO_B(mp, 1), 0);
 		if (!bp) {
-			cmn_err(CE_WARN, "XFS: log device read failed");
+			xfs_warn(mp, "log device read failed");
 			return EIO;
 		}
 		xfs_buf_relse(bp);
@@ -1086,7 +1097,7 @@ xfs_mount_reset_sbqflags(
 		return 0;
 
 #ifdef QUOTADEBUG
-	xfs_fs_cmn_err(CE_NOTE, mp, "Writing superblock quota changes");
+	xfs_notice(mp, "Writing superblock quota changes");
 #endif
 
 	tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE);
@@ -1094,8 +1105,7 @@ xfs_mount_reset_sbqflags(
 				      XFS_DEFAULT_LOG_COUNT);
 	if (error) {
 		xfs_trans_cancel(tp, 0);
-		xfs_fs_cmn_err(CE_ALERT, mp,
-			"xfs_mount_reset_sbqflags: Superblock update failed!");
+		xfs_alert(mp, "%s: Superblock update failed!", __func__);
 		return error;
 	}
 
@@ -1161,8 +1171,7 @@ xfs_mountfs(
 	 * transaction subsystem is online.
 	 */
 	if (xfs_sb_has_mismatched_features2(sbp)) {
-		cmn_err(CE_WARN,
-			"XFS: correcting sb_features alignment problem");
+		xfs_warn(mp, "correcting sb_features alignment problem");
 		sbp->sb_features2 |= sbp->sb_bad_features2;
 		sbp->sb_bad_features2 = sbp->sb_features2;
 		mp->m_update_flags |= XFS_SB_FEATURES2 | XFS_SB_BAD_FEATURES2;
@@ -1241,7 +1250,7 @@ xfs_mountfs(
 	 */
 	error = xfs_rtmount_init(mp);
 	if (error) {
-		cmn_err(CE_WARN, "XFS: RT mount failed");
+		xfs_warn(mp, "RT mount failed");
 		goto out_remove_uuid;
 	}
 
@@ -1272,12 +1281,12 @@ xfs_mountfs(
 	INIT_RADIX_TREE(&mp->m_perag_tree, GFP_ATOMIC);
 	error = xfs_initialize_perag(mp, sbp->sb_agcount, &mp->m_maxagi);
 	if (error) {
-		cmn_err(CE_WARN, "XFS: Failed per-ag init: %d", error);
+		xfs_warn(mp, "Failed per-ag init: %d", error);
 		goto out_remove_uuid;
 	}
 
 	if (!sbp->sb_logblocks) {
-		cmn_err(CE_WARN, "XFS: no log defined");
+		xfs_warn(mp, "no log defined");
 		XFS_ERROR_REPORT("xfs_mountfs", XFS_ERRLEVEL_LOW, mp);
 		error = XFS_ERROR(EFSCORRUPTED);
 		goto out_free_perag;
@@ -1290,7 +1299,7 @@ xfs_mountfs(
 			      XFS_FSB_TO_DADDR(mp, sbp->sb_logstart),
 			      XFS_FSB_TO_BB(mp, sbp->sb_logblocks));
 	if (error) {
-		cmn_err(CE_WARN, "XFS: log mount failed");
+		xfs_warn(mp, "log mount failed");
 		goto out_free_perag;
 	}
 
@@ -1327,16 +1336,14 @@ xfs_mountfs(
 	 */
 	error = xfs_iget(mp, NULL, sbp->sb_rootino, 0, XFS_ILOCK_EXCL, &rip);
 	if (error) {
-		cmn_err(CE_WARN, "XFS: failed to read root inode");
+		xfs_warn(mp, "failed to read root inode");
 		goto out_log_dealloc;
 	}
 
 	ASSERT(rip != NULL);
 
 	if (unlikely((rip->i_d.di_mode & S_IFMT) != S_IFDIR)) {
-		cmn_err(CE_WARN, "XFS: corrupted root inode");
-		cmn_err(CE_WARN, "Device %s - root %llu is not a directory",
-			XFS_BUFTARG_NAME(mp->m_ddev_targp),
+		xfs_warn(mp, "corrupted root inode %llu: not a directory",
 			(unsigned long long)rip->i_ino);
 		xfs_iunlock(rip, XFS_ILOCK_EXCL);
 		XFS_ERROR_REPORT("xfs_mountfs_int(2)", XFS_ERRLEVEL_LOW,
@@ -1356,7 +1363,7 @@ xfs_mountfs(
 		/*
 		 * Free up the root inode.
 		 */
-		cmn_err(CE_WARN, "XFS: failed to read RT inodes");
+		xfs_warn(mp, "failed to read RT inodes");
 		goto out_rele_rip;
 	}
 
@@ -1368,7 +1375,7 @@ xfs_mountfs(
 	if (mp->m_update_flags && !(mp->m_flags & XFS_MOUNT_RDONLY)) {
 		error = xfs_mount_log_sb(mp, mp->m_update_flags);
 		if (error) {
-			cmn_err(CE_WARN, "XFS: failed to write sb changes");
+			xfs_warn(mp, "failed to write sb changes");
 			goto out_rtunmount;
 		}
 	}
@@ -1389,10 +1396,7 @@ xfs_mountfs(
 		 * quotachecked license.
 		 */
 		if (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT) {
-			cmn_err(CE_NOTE,
-				"XFS: resetting qflags for filesystem %s",
-				mp->m_fsname);
-
+			xfs_notice(mp, "resetting quota flags");
 			error = xfs_mount_reset_sbqflags(mp);
 			if (error)
 				return error;
@@ -1406,7 +1410,7 @@ xfs_mountfs(
 	 */
 	error = xfs_log_mount_finish(mp);
 	if (error) {
-		cmn_err(CE_WARN, "XFS: log mount finish failed");
+		xfs_warn(mp, "log mount finish failed");
 		goto out_rtunmount;
 	}
 
@@ -1435,8 +1439,8 @@ xfs_mountfs(
 		resblks = xfs_default_resblks(mp);
 		error = xfs_reserve_blocks(mp, &resblks, NULL);
 		if (error)
-			cmn_err(CE_WARN, "XFS: Unable to allocate reserve "
-				"blocks. Continuing without a reserve pool.");
+			xfs_warn(mp,
+	"Unable to allocate reserve blocks. Continuing without reserve pool.");
 	}
 
 	return 0;
@@ -1525,12 +1529,12 @@ xfs_unmountfs(
 	resblks = 0;
 	error = xfs_reserve_blocks(mp, &resblks, NULL);
 	if (error)
-		cmn_err(CE_WARN, "XFS: Unable to free reserved block pool. "
+		xfs_warn(mp, "Unable to free reserved block pool. "
 				"Freespace may not be correct on next mount.");
 
 	error = xfs_log_sbcount(mp, 1);
 	if (error)
-		cmn_err(CE_WARN, "XFS: Unable to update superblock counters. "
+		xfs_warn(mp, "Unable to update superblock counters. "
 				"Freespace may not be correct on next mount.");
 	xfs_unmountfs_writesb(mp);
 	xfs_unmountfs_wait(mp); 		/* wait for async bufs */
@@ -2013,10 +2017,8 @@ xfs_dev_is_read_only(
 	if (xfs_readonly_buftarg(mp->m_ddev_targp) ||
 	    xfs_readonly_buftarg(mp->m_logdev_targp) ||
 	    (mp->m_rtdev_targp && xfs_readonly_buftarg(mp->m_rtdev_targp))) {
-		cmn_err(CE_NOTE,
-			"XFS: %s required on read-only device.", message);
-		cmn_err(CE_NOTE,
-			"XFS: write access unavailable, cannot proceed.");
+		xfs_notice(mp, "%s required on read-only device.", message);
+		xfs_notice(mp, "write access unavailable, cannot proceed.");
 		return EROFS;
 	}
 	return 0;
diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h
index 9bb6eda..a595f29 100644
--- a/fs/xfs/xfs_quota.h
+++ b/fs/xfs/xfs_quota.h
@@ -382,7 +382,8 @@ static inline int xfs_qm_sync(struct xfs_mount *mp, int flags)
 	xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, nb, ni, \
 				f | XFS_QMOPT_RES_REGBLKS)
 
-extern int xfs_qm_dqcheck(xfs_disk_dquot_t *, xfs_dqid_t, uint, uint, char *);
+extern int xfs_qm_dqcheck(struct xfs_mount *, xfs_disk_dquot_t *,
+				xfs_dqid_t, uint, uint, char *);
 extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
 
 #endif	/* __KERNEL__ */
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 12a1913..8f76fdf 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -76,7 +76,7 @@ xfs_growfs_rt_alloc(
 	xfs_mount_t	*mp,		/* file system mount point */
 	xfs_extlen_t	oblocks,	/* old count of blocks */
 	xfs_extlen_t	nblocks,	/* new count of blocks */
-	xfs_ino_t	ino)		/* inode number (bitmap/summary) */
+	xfs_inode_t	*ip)		/* inode (bitmap/summary) */
 {
 	xfs_fileoff_t	bno;		/* block number in file */
 	xfs_buf_t	*bp;		/* temporary buffer for zeroing */
@@ -86,7 +86,6 @@ xfs_growfs_rt_alloc(
 	xfs_fsblock_t	firstblock;	/* first block allocated in xaction */
 	xfs_bmap_free_t	flist;		/* list of freed blocks */
 	xfs_fsblock_t	fsbno;		/* filesystem block for bno */
-	xfs_inode_t	*ip;		/* pointer to incore inode */
 	xfs_bmbt_irec_t	map;		/* block map output */
 	int		nmap;		/* number of block maps */
 	int		resblks;	/* space reservation */
@@ -112,9 +111,9 @@ xfs_growfs_rt_alloc(
 		/*
 		 * Lock the inode.
 		 */
-		if ((error = xfs_trans_iget(mp, tp, ino, 0,
-						XFS_ILOCK_EXCL, &ip)))
-			goto error_cancel;
+		xfs_ilock(ip, XFS_ILOCK_EXCL);
+		xfs_trans_ijoin_ref(tp, ip, XFS_ILOCK_EXCL);
+
 		xfs_bmap_init(&flist, &firstblock);
 		/*
 		 * Allocate blocks to the bitmap file.
@@ -155,9 +154,8 @@ xfs_growfs_rt_alloc(
 			/*
 			 * Lock the bitmap inode.
 			 */
-			if ((error = xfs_trans_iget(mp, tp, ino, 0,
-							XFS_ILOCK_EXCL, &ip)))
-				goto error_cancel;
+			xfs_ilock(ip, XFS_ILOCK_EXCL);
+			xfs_trans_ijoin_ref(tp, ip, XFS_ILOCK_EXCL);
 			/*
 			 * Get a buffer for the block.
 			 */
@@ -1854,7 +1852,6 @@ xfs_growfs_rt(
 	xfs_rtblock_t	bmbno;		/* bitmap block number */
 	xfs_buf_t	*bp;		/* temporary buffer */
 	int		error;		/* error return value */
-	xfs_inode_t	*ip;		/* bitmap inode, used as lock */
 	xfs_mount_t	*nmp;		/* new (fake) mount structure */
 	xfs_drfsbno_t	nrblocks;	/* new number of realtime blocks */
 	xfs_extlen_t	nrbmblocks;	/* new number of rt bitmap blocks */
@@ -1918,11 +1915,11 @@ xfs_growfs_rt(
 	/*
 	 * Allocate space to the bitmap and summary files, as necessary.
 	 */
-	if ((error = xfs_growfs_rt_alloc(mp, rbmblocks, nrbmblocks,
-			mp->m_sb.sb_rbmino)))
+	error = xfs_growfs_rt_alloc(mp, rbmblocks, nrbmblocks, mp->m_rbmip);
+	if (error)
 		return error;
-	if ((error = xfs_growfs_rt_alloc(mp, rsumblocks, nrsumblocks,
-			mp->m_sb.sb_rsumino)))
+	error = xfs_growfs_rt_alloc(mp, rsumblocks, nrsumblocks, mp->m_rsumip);
+	if (error)
 		return error;
 	/*
 	 * Allocate a new (fake) mount/sb.
@@ -1972,10 +1969,8 @@ xfs_growfs_rt(
 		/*
 		 * Lock out other callers by grabbing the bitmap inode lock.
 		 */
-		if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rbmino, 0,
-						XFS_ILOCK_EXCL, &ip)))
-			goto error_cancel;
-		ASSERT(ip == mp->m_rbmip);
+		xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL);
+		xfs_trans_ijoin_ref(tp, mp->m_rbmip, XFS_ILOCK_EXCL);
 		/*
 		 * Update the bitmap inode's size.
 		 */
@@ -1986,10 +1981,8 @@ xfs_growfs_rt(
 		/*
 		 * Get the summary inode into the transaction.
 		 */
-		if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rsumino, 0,
-						XFS_ILOCK_EXCL, &ip)))
-			goto error_cancel;
-		ASSERT(ip == mp->m_rsumip);
+		xfs_ilock(mp->m_rsumip, XFS_ILOCK_EXCL);
+		xfs_trans_ijoin_ref(tp, mp->m_rsumip, XFS_ILOCK_EXCL);
 		/*
 		 * Update the summary inode's size.
 		 */
@@ -2075,15 +2068,15 @@ xfs_rtallocate_extent(
 	xfs_extlen_t	prod,		/* extent product factor */
 	xfs_rtblock_t	*rtblock)	/* out: start block allocated */
 {
+	xfs_mount_t	*mp = tp->t_mountp;
 	int		error;		/* error value */
-	xfs_inode_t	*ip;		/* inode for bitmap file */
-	xfs_mount_t	*mp;		/* file system mount structure */
 	xfs_rtblock_t	r;		/* result allocated block */
 	xfs_fsblock_t	sb;		/* summary file block number */
 	xfs_buf_t	*sumbp;		/* summary file block buffer */
 
+	ASSERT(xfs_isilocked(mp->m_rbmip, XFS_ILOCK_EXCL));
 	ASSERT(minlen > 0 && minlen <= maxlen);
-	mp = tp->t_mountp;
+
 	/*
 	 * If prod is set then figure out what to do to minlen and maxlen.
 	 */
@@ -2099,12 +2092,7 @@ xfs_rtallocate_extent(
 			return 0;
 		}
 	}
-	/*
-	 * Lock out other callers by grabbing the bitmap inode lock.
-	 */
-	if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rbmino, 0,
-					XFS_ILOCK_EXCL, &ip)))
-		return error;
+
 	sumbp = NULL;
 	/*
 	 * Allocate by size, or near another block, or exactly at some block.
@@ -2123,11 +2111,12 @@ xfs_rtallocate_extent(
 				len, &sumbp, &sb, prod, &r);
 		break;
 	default:
+		error = EIO;
 		ASSERT(0);
 	}
-	if (error) {
+	if (error)
 		return error;
-	}
+
 	/*
 	 * If it worked, update the superblock.
 	 */
@@ -2155,7 +2144,6 @@ xfs_rtfree_extent(
 	xfs_extlen_t	len)		/* length of extent freed */
 {
 	int		error;		/* error value */
-	xfs_inode_t	*ip;		/* bitmap file inode */
 	xfs_mount_t	*mp;		/* file system mount structure */
 	xfs_fsblock_t	sb;		/* summary file block number */
 	xfs_buf_t	*sumbp;		/* summary file block buffer */
@@ -2164,9 +2152,9 @@ xfs_rtfree_extent(
 	/*
 	 * Synchronize by locking the bitmap inode.
 	 */
-	if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rbmino, 0,
-					XFS_ILOCK_EXCL, &ip)))
-		return error;
+	xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL);
+	xfs_trans_ijoin_ref(tp, mp->m_rbmip, XFS_ILOCK_EXCL);
+
 #if defined(__KERNEL__) && defined(DEBUG)
 	/*
 	 * Check to see that this whole range is currently allocated.
@@ -2199,10 +2187,10 @@ xfs_rtfree_extent(
 	 */
 	if (tp->t_frextents_delta + mp->m_sb.sb_frextents ==
 	    mp->m_sb.sb_rextents) {
-		if (!(ip->i_d.di_flags & XFS_DIFLAG_NEWRTBM))
-			ip->i_d.di_flags |= XFS_DIFLAG_NEWRTBM;
-		*(__uint64_t *)&ip->i_d.di_atime = 0;
-		xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+		if (!(mp->m_rbmip->i_d.di_flags & XFS_DIFLAG_NEWRTBM))
+			mp->m_rbmip->i_d.di_flags |= XFS_DIFLAG_NEWRTBM;
+		*(__uint64_t *)&mp->m_rbmip->i_d.di_atime = 0;
+		xfs_trans_log_inode(tp, mp->m_rbmip, XFS_ILOG_CORE);
 	}
 	return 0;
 }
@@ -2222,8 +2210,8 @@ xfs_rtmount_init(
 	if (sbp->sb_rblocks == 0)
 		return 0;
 	if (mp->m_rtdev_targp == NULL) {
-		cmn_err(CE_WARN,
-	"XFS: This filesystem has a realtime volume, use rtdev=device option");
+		xfs_warn(mp,
+	"Filesystem has a realtime volume, use rtdev=device option");
 		return XFS_ERROR(ENODEV);
 	}
 	mp->m_rsumlevels = sbp->sb_rextslog + 1;
@@ -2237,7 +2225,7 @@ xfs_rtmount_init(
 	 */
 	d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks);
 	if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_rblocks) {
-		cmn_err(CE_WARN, "XFS: realtime mount -- %llu != %llu",
+		xfs_warn(mp, "realtime mount -- %llu != %llu",
 			(unsigned long long) XFS_BB_TO_FSB(mp, d),
 			(unsigned long long) mp->m_sb.sb_rblocks);
 		return XFS_ERROR(EFBIG);
@@ -2246,7 +2234,7 @@ xfs_rtmount_init(
 					d - XFS_FSB_TO_BB(mp, 1),
 					XFS_FSB_TO_B(mp, 1), 0);
 	if (!bp) {
-		cmn_err(CE_WARN, "XFS: realtime device size check failed");
+		xfs_warn(mp, "realtime device size check failed");
 		return EIO;
 	}
 	xfs_buf_relse(bp);
@@ -2306,20 +2294,16 @@ xfs_rtpick_extent(
 	xfs_rtblock_t	*pick)		/* result rt extent */
 {
 	xfs_rtblock_t	b;		/* result block */
-	int		error;		/* error return value */
-	xfs_inode_t	*ip;		/* bitmap incore inode */
 	int		log2;		/* log of sequence number */
 	__uint64_t	resid;		/* residual after log removed */
 	__uint64_t	seq;		/* sequence number of file creation */
 	__uint64_t	*seqp;		/* pointer to seqno in inode */
 
-	if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rbmino, 0,
-					XFS_ILOCK_EXCL, &ip)))
-		return error;
-	ASSERT(ip == mp->m_rbmip);
-	seqp = (__uint64_t *)&ip->i_d.di_atime;
-	if (!(ip->i_d.di_flags & XFS_DIFLAG_NEWRTBM)) {
-		ip->i_d.di_flags |= XFS_DIFLAG_NEWRTBM;
+	ASSERT(xfs_isilocked(mp->m_rbmip, XFS_ILOCK_EXCL));
+
+	seqp = (__uint64_t *)&mp->m_rbmip->i_d.di_atime;
+	if (!(mp->m_rbmip->i_d.di_flags & XFS_DIFLAG_NEWRTBM)) {
+		mp->m_rbmip->i_d.di_flags |= XFS_DIFLAG_NEWRTBM;
 		*seqp = 0;
 	}
 	seq = *seqp;
@@ -2335,7 +2319,7 @@ xfs_rtpick_extent(
 			b = mp->m_sb.sb_rextents - len;
 	}
 	*seqp = seq + 1;
-	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+	xfs_trans_log_inode(tp, mp->m_rbmip, XFS_ILOG_CORE);
 	*pick = b;
 	return 0;
 }
diff --git a/fs/xfs/xfs_rtalloc.h b/fs/xfs/xfs_rtalloc.h
index ff614c2..09e1f4f 100644
--- a/fs/xfs/xfs_rtalloc.h
+++ b/fs/xfs/xfs_rtalloc.h
@@ -154,7 +154,7 @@ xfs_rtmount_init(
 	if (mp->m_sb.sb_rblocks == 0)
 		return 0;
 
-	cmn_err(CE_WARN, "XFS: Not built with CONFIG_XFS_RT");
+	xfs_warn(mp, "Not built with CONFIG_XFS_RT");
 	return ENOSYS;
 }
 # define xfs_rtmount_inodes(m)  (((mp)->m_sb.sb_rblocks == 0)? 0 : (ENOSYS))
diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c
index 56861d5..d6d6fdf 100644
--- a/fs/xfs/xfs_rw.c
+++ b/fs/xfs/xfs_rw.c
@@ -49,9 +49,9 @@ xfs_do_force_shutdown(
 	logerror = flags & SHUTDOWN_LOG_IO_ERROR;
 
 	if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
-		cmn_err(CE_NOTE, "xfs_force_shutdown(%s,0x%x) called from "
-				 "line %d of file %s.  Return address = 0x%p",
-			mp->m_fsname, flags, lnnum, fname, __return_address);
+		xfs_notice(mp,
+	"%s(0x%x) called from line %d of file %s.  Return address = 0x%p",
+			__func__, flags, lnnum, fname, __return_address);
 	}
 	/*
 	 * No need to duplicate efforts.
@@ -69,30 +69,25 @@ xfs_do_force_shutdown(
 		return;
 
 	if (flags & SHUTDOWN_CORRUPT_INCORE) {
-		xfs_cmn_err(XFS_PTAG_SHUTDOWN_CORRUPT, CE_ALERT, mp,
-    "Corruption of in-memory data detected.  Shutting down filesystem: %s",
-			mp->m_fsname);
-		if (XFS_ERRLEVEL_HIGH <= xfs_error_level) {
+		xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT,
+    "Corruption of in-memory data detected.  Shutting down filesystem");
+		if (XFS_ERRLEVEL_HIGH <= xfs_error_level)
 			xfs_stack_trace();
-		}
 	} else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
 		if (logerror) {
-			xfs_cmn_err(XFS_PTAG_SHUTDOWN_LOGERROR, CE_ALERT, mp,
-		"Log I/O Error Detected.  Shutting down filesystem: %s",
-				mp->m_fsname);
+			xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR,
+		"Log I/O Error Detected.  Shutting down filesystem");
 		} else if (flags & SHUTDOWN_DEVICE_REQ) {
-			xfs_cmn_err(XFS_PTAG_SHUTDOWN_IOERROR, CE_ALERT, mp,
-		"All device paths lost.  Shutting down filesystem: %s",
-				mp->m_fsname);
+			xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
+		"All device paths lost.  Shutting down filesystem");
 		} else if (!(flags & SHUTDOWN_REMOTE_REQ)) {
-			xfs_cmn_err(XFS_PTAG_SHUTDOWN_IOERROR, CE_ALERT, mp,
-		"I/O Error Detected.  Shutting down filesystem: %s",
-				mp->m_fsname);
+			xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
+		"I/O Error Detected. Shutting down filesystem");
 		}
 	}
 	if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
-		cmn_err(CE_ALERT, "Please umount the filesystem, "
-				  "and rectify the problem(s)");
+		xfs_alert(mp,
+	"Please umount the filesystem and rectify the problem(s)");
 	}
 }
 
@@ -106,10 +101,9 @@ xfs_ioerror_alert(
 	xfs_buf_t		*bp,
 	xfs_daddr_t		blkno)
 {
-	cmn_err(CE_ALERT,
- "I/O error in filesystem (\"%s\") meta-data dev %s block 0x%llx"
- "       (\"%s\") error %d buf count %zd",
-		(!mp || !mp->m_fsname) ? "(fs name not set)" : mp->m_fsname,
+	xfs_alert(mp,
+		 "I/O error occurred: meta-data dev %s block 0x%llx"
+		 "       (\"%s\") error %d buf count %zd",
 		XFS_BUFTARG_NAME(XFS_BUF_TARGET(bp)),
 		(__uint64_t)blkno, func,
 		XFS_BUF_GETERROR(bp), XFS_BUF_COUNT(bp));
@@ -173,17 +167,9 @@ xfs_extlen_t
 xfs_get_extsz_hint(
 	struct xfs_inode	*ip)
 {
-	xfs_extlen_t		extsz;
-
-	if (unlikely(XFS_IS_REALTIME_INODE(ip))) {
-		extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
-				? ip->i_d.di_extsize
-				: ip->i_mount->m_sb.sb_rextsize;
-		ASSERT(extsz);
-	} else {
-		extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
-				? ip->i_d.di_extsize : 0;
-	}
-
-	return extsz;
+	if ((ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE) && ip->i_d.di_extsize)
+		return ip->i_d.di_extsize;
+	if (XFS_IS_REALTIME_INODE(ip))
+		return ip->i_mount->m_sb.sb_rextsize;
+	return 0;
 }
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index c2042b7..06a9759 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -469,8 +469,6 @@ void		xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
 void		xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
 void		xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
 void		xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
-int		xfs_trans_iget(struct xfs_mount *, xfs_trans_t *,
-			       xfs_ino_t , uint, uint, struct xfs_inode **);
 void		xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
 void		xfs_trans_ijoin_ref(struct xfs_trans *, struct xfs_inode *, uint);
 void		xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *);
diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
index c5bbbc4..12aff95 100644
--- a/fs/xfs/xfs_trans_ail.c
+++ b/fs/xfs/xfs_trans_ail.c
@@ -563,7 +563,7 @@ xfs_trans_ail_delete_bulk(
 
 			spin_unlock(&ailp->xa_lock);
 			if (!XFS_FORCED_SHUTDOWN(mp)) {
-				xfs_cmn_err(XFS_PTAG_AILDELETE, CE_ALERT, mp,
+				xfs_alert_tag(mp, XFS_PTAG_AILDELETE,
 		"%s: attempting to delete a log item that is not in the AIL",
 						__func__);
 				xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c
index c47918c..03b3b7f 100644
--- a/fs/xfs/xfs_trans_buf.c
+++ b/fs/xfs/xfs_trans_buf.c
@@ -305,7 +305,7 @@ xfs_trans_read_buf(
 			if (xfs_error_target == target) {
 				if (((xfs_req_num++) % xfs_error_mod) == 0) {
 					xfs_buf_relse(bp);
-					cmn_err(CE_DEBUG, "Returning error!\n");
+					xfs_debug(mp, "Returning error!");
 					return XFS_ERROR(EIO);
 				}
 			}
@@ -383,7 +383,8 @@ xfs_trans_read_buf(
 	bp = xfs_buf_read(target, blkno, len, flags | XBF_DONT_BLOCK);
 	if (bp == NULL) {
 		*bpp = NULL;
-		return 0;
+		return (flags & XBF_TRYLOCK) ?
+					0 : XFS_ERROR(ENOMEM);
 	}
 	if (XFS_BUF_GETERROR(bp) != 0) {
 	    XFS_BUF_SUPER_STALE(bp);
@@ -403,7 +404,7 @@ xfs_trans_read_buf(
 				xfs_force_shutdown(tp->t_mountp,
 						   SHUTDOWN_META_IO_ERROR);
 				xfs_buf_relse(bp);
-				cmn_err(CE_DEBUG, "Returning trans error!\n");
+				xfs_debug(mp, "Returning trans error!");
 				return XFS_ERROR(EIO);
 			}
 		}
@@ -427,7 +428,7 @@ shutdown_abort:
 	 */
 #if defined(DEBUG)
 	if (XFS_BUF_ISSTALE(bp) && XFS_BUF_ISDELAYWRITE(bp))
-		cmn_err(CE_NOTE, "about to pop assert, bp == 0x%p", bp);
+		xfs_notice(mp, "about to pop assert, bp == 0x%p", bp);
 #endif
 	ASSERT((XFS_BUF_BFLAGS(bp) & (XBF_STALE|XBF_DELWRI)) !=
 				     (XBF_STALE|XBF_DELWRI));
diff --git a/fs/xfs/xfs_trans_inode.c b/fs/xfs/xfs_trans_inode.c
index ccb3453..16084d8 100644
--- a/fs/xfs/xfs_trans_inode.c
+++ b/fs/xfs/xfs_trans_inode.c
@@ -44,28 +44,6 @@ xfs_trans_inode_broot_debug(
 #endif
 
 /*
- * Get an inode and join it to the transaction.
- */
-int
-xfs_trans_iget(
-	xfs_mount_t	*mp,
-	xfs_trans_t	*tp,
-	xfs_ino_t	ino,
-	uint		flags,
-	uint		lock_flags,
-	xfs_inode_t	**ipp)
-{
-	int			error;
-
-	error = xfs_iget(mp, tp, ino, flags, lock_flags, ipp);
-	if (!error && tp) {
-		xfs_trans_ijoin(tp, *ipp);
-		(*ipp)->i_itemp->ili_lock_flags = lock_flags;
-	}
-	return error;
-}
-
-/*
  * Add a locked inode to the transaction.
  *
  * The inode must be locked, and it cannot be associated with any transaction.
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index d8e6f8c..c48b421 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -1189,9 +1189,8 @@ xfs_inactive(
 		 * inode might be lost for a long time or forever.
 		 */
 		if (!XFS_FORCED_SHUTDOWN(mp)) {
-			cmn_err(CE_NOTE,
-		"xfs_inactive:	xfs_ifree() returned an error = %d on %s",
-				error, mp->m_fsname);
+			xfs_notice(mp, "%s: xfs_ifree returned error %d",
+				__func__, error);
 			xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR);
 		}
 		xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);
@@ -1208,12 +1207,12 @@ xfs_inactive(
 		 */
 		error = xfs_bmap_finish(&tp,  &free_list, &committed);
 		if (error)
-			xfs_fs_cmn_err(CE_NOTE, mp, "xfs_inactive: "
-				"xfs_bmap_finish() returned error %d", error);
+			xfs_notice(mp, "%s: xfs_bmap_finish returned error %d",
+				__func__, error);
 		error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
 		if (error)
-			xfs_fs_cmn_err(CE_NOTE, mp, "xfs_inactive: "
-				"xfs_trans_commit() returned error %d", error);
+			xfs_notice(mp, "%s: xfs_trans_commit returned error %d",
+				__func__, error);
 	}
 
 	/*
@@ -1310,7 +1309,7 @@ xfs_create(
 	error = xfs_qm_vop_dqalloc(dp, current_fsuid(), current_fsgid(), prid,
 			XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, &udqp, &gdqp);
 	if (error)
-		goto std_return;
+		return error;
 
 	if (is_dir) {
 		rdev = 0;
@@ -1390,12 +1389,6 @@ xfs_create(
 	}
 
 	/*
-	 * At this point, we've gotten a newly allocated inode.
-	 * It is locked (and joined to the transaction).
-	 */
-	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
-
-	/*
 	 * Now we join the directory inode to the transaction.  We do not do it
 	 * earlier because xfs_dir_ialloc might commit the previous transaction
 	 * (and release all the locks).  An error from here on will result in
@@ -1440,22 +1433,13 @@ xfs_create(
 	 */
 	xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp);
 
-	/*
-	 * xfs_trans_commit normally decrements the vnode ref count
-	 * when it unlocks the inode. Since we want to return the
-	 * vnode to the caller, we bump the vnode ref count now.
-	 */
-	IHOLD(ip);
-
 	error = xfs_bmap_finish(&tp, &free_list, &committed);
 	if (error)
-		goto out_abort_rele;
+		goto out_bmap_cancel;
 
 	error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
-	if (error) {
-		IRELE(ip);
-		goto out_dqrele;
-	}
+	if (error)
+		goto out_release_inode;
 
 	xfs_qm_dqrele(udqp);
 	xfs_qm_dqrele(gdqp);
@@ -1469,27 +1453,21 @@ xfs_create(
 	cancel_flags |= XFS_TRANS_ABORT;
  out_trans_cancel:
 	xfs_trans_cancel(tp, cancel_flags);
- out_dqrele:
+ out_release_inode:
+	/*
+	 * Wait until after the current transaction is aborted to
+	 * release the inode.  This prevents recursive transactions
+	 * and deadlocks from xfs_inactive.
+	 */
+	if (ip)
+		IRELE(ip);
+
 	xfs_qm_dqrele(udqp);
 	xfs_qm_dqrele(gdqp);
 
 	if (unlock_dp_on_error)
 		xfs_iunlock(dp, XFS_ILOCK_EXCL);
- std_return:
 	return error;
-
- out_abort_rele:
-	/*
-	 * Wait until after the current transaction is aborted to
-	 * release the inode.  This prevents recursive transactions
-	 * and deadlocks from xfs_inactive.
-	 */
-	xfs_bmap_cancel(&free_list);
-	cancel_flags |= XFS_TRANS_ABORT;
-	xfs_trans_cancel(tp, cancel_flags);
-	IRELE(ip);
-	unlock_dp_on_error = B_FALSE;
-	goto out_dqrele;
 }
 
 #ifdef DEBUG
@@ -2114,9 +2092,8 @@ xfs_symlink(
 				  XFS_BMAPI_WRITE | XFS_BMAPI_METADATA,
 				  &first_block, resblks, mval, &nmaps,
 				  &free_list);
-		if (error) {
-			goto error1;
-		}
+		if (error)
+			goto error2;
 
 		if (resblks)
 			resblks -= fs_blocks;
@@ -2148,7 +2125,7 @@ xfs_symlink(
 	error = xfs_dir_createname(tp, dp, link_name, ip->i_ino,
 					&first_block, &free_list, resblks);
 	if (error)
-		goto error1;
+		goto error2;
 	xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
 	xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
 
@@ -2161,13 +2138,6 @@ xfs_symlink(
 		xfs_trans_set_sync(tp);
 	}
 
-	/*
-	 * xfs_trans_commit normally decrements the vnode ref count
-	 * when it unlocks the inode. Since we want to return the
-	 * vnode to the caller, we bump the vnode ref count now.
-	 */
-	IHOLD(ip);
-
 	error = xfs_bmap_finish(&tp, &free_list, &committed);
 	if (error) {
 		goto error2;
@@ -2861,7 +2831,8 @@ xfs_change_file_space(
 		ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC;
 
 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
-	xfs_trans_set_sync(tp);
+	if (attr_flags & XFS_ATTR_SYNC)
+		xfs_trans_set_sync(tp);
 
 	error = xfs_trans_commit(tp, 0);
 
diff --git a/fs/xfs/xfs_vnodeops.h b/fs/xfs/xfs_vnodeops.h
index f6702927..3bcd233 100644
--- a/fs/xfs/xfs_vnodeops.h
+++ b/fs/xfs/xfs_vnodeops.h
@@ -18,6 +18,7 @@ int xfs_setattr(struct xfs_inode *ip, struct iattr *vap, int flags);
 #define	XFS_ATTR_NONBLOCK	0x02	/* return EAGAIN if operation would block */
 #define XFS_ATTR_NOLOCK		0x04	/* Don't grab any conflicting locks */
 #define XFS_ATTR_NOACL		0x08	/* Don't call xfs_acl_chmod */
+#define XFS_ATTR_SYNC		0x10	/* synchronous operation required */
 
 int xfs_readlink(struct xfs_inode *ip, char *link);
 int xfs_release(struct xfs_inode *ip);
author	Patrick McHardy <kaber@trash.net>	2011-04-13 13:32:28 +0200
committer	Patrick McHardy <kaber@trash.net>	2011-04-13 13:32:28 +0200
commit	b32e3dc7860d00124fa432dba09667e647cb9bcc (patch)
tree	2fa6e56f389431dfb84609d3d7572cad76e88e71 /fs
parent	6604271c5bc658a6067ed0c3deba4d89e0e50382 (diff)
parent	96120d86fe302c006259baee9061eea9e1b9e486 (diff)
download	op-kernel-dev-b32e3dc7860d00124fa432dba09667e647cb9bcc.zip op-kernel-dev-b32e3dc7860d00124fa432dba09667e647cb9bcc.tar.gz