Merge branch 'master' of /home/trondmy/kernel/linux-2.6/

Conflicts:

	net/sunrpc/auth_gss/gss_krb5_crypto.c
	net/sunrpc/auth_gss/gss_spkm3_token.c
	net/sunrpc/clnt.c

Merge with mainline and fix conflicts.

384 files changed, 7187 insertions, 4506 deletions

diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 9f17b0c..6c78343 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -110,7 +110,7 @@ static int v9fs_file_lock(struct file *filp, int cmd, struct file_lock *fl)
 
 	if ((IS_SETLK(cmd) || IS_SETLKW(cmd)) && fl->fl_type != F_UNLCK) {
 		filemap_write_and_wait(inode->i_mapping);
-		invalidate_inode_pages(&inode->i_data);
+		invalidate_mapping_pages(&inode->i_data, 0, -1);
 	}
 
 	return res;
@@ -234,7 +234,7 @@ v9fs_file_write(struct file *filp, const char __user * data,
 		total += result;
 	} while (count);
 
-		invalidate_inode_pages2(inode->i_mapping);
+	invalidate_inode_pages2(inode->i_mapping);
 	return total;
 }
 
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 9109ba1..5cf2213 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -41,10 +41,10 @@
 #include "v9fs_vfs.h"
 #include "fid.h"
 
-static struct inode_operations v9fs_dir_inode_operations;
-static struct inode_operations v9fs_dir_inode_operations_ext;
-static struct inode_operations v9fs_file_inode_operations;
-static struct inode_operations v9fs_symlink_inode_operations;
+static const struct inode_operations v9fs_dir_inode_operations;
+static const struct inode_operations v9fs_dir_inode_operations_ext;
+static const struct inode_operations v9fs_file_inode_operations;
+static const struct inode_operations v9fs_symlink_inode_operations;
 
 /**
  * unixmode2p9mode - convert unix mode bits to plan 9
@@ -585,17 +585,14 @@ static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 	if (IS_ERR(inode)) {
 		err = PTR_ERR(inode);
 		inode = NULL;
-		goto clean_up_fids;
+		v9fs_fid_destroy(vfid);
+		goto error;
 	}
 
 	dentry->d_op = &v9fs_dentry_operations;
 	d_instantiate(dentry, inode);
 	return 0;
 
-clean_up_fids:
-	if (vfid)
-		v9fs_fid_destroy(vfid);
-
 clean_up_dfid:
 	v9fs_fid_clunk(v9ses, dfid);
 
@@ -1306,7 +1303,7 @@ v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
 	return retval;
 }
 
-static struct inode_operations v9fs_dir_inode_operations_ext = {
+static const struct inode_operations v9fs_dir_inode_operations_ext = {
 	.create = v9fs_vfs_create,
 	.lookup = v9fs_vfs_lookup,
 	.symlink = v9fs_vfs_symlink,
@@ -1321,7 +1318,7 @@ static struct inode_operations v9fs_dir_inode_operations_ext = {
 	.setattr = v9fs_vfs_setattr,
 };
 
-static struct inode_operations v9fs_dir_inode_operations = {
+static const struct inode_operations v9fs_dir_inode_operations = {
 	.create = v9fs_vfs_create,
 	.lookup = v9fs_vfs_lookup,
 	.unlink = v9fs_vfs_unlink,
@@ -1333,12 +1330,12 @@ static struct inode_operations v9fs_dir_inode_operations = {
 	.setattr = v9fs_vfs_setattr,
 };
 
-static struct inode_operations v9fs_file_inode_operations = {
+static const struct inode_operations v9fs_file_inode_operations = {
 	.getattr = v9fs_vfs_getattr,
 	.setattr = v9fs_vfs_setattr,
 };
 
-static struct inode_operations v9fs_symlink_inode_operations = {
+static const struct inode_operations v9fs_symlink_inode_operations = {
 	.readlink = v9fs_vfs_readlink,
 	.follow_link = v9fs_vfs_follow_link,
 	.put_link = v9fs_vfs_put_link,
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 63320d4..0ec42f6 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -45,7 +45,7 @@
 #include "fid.h"
 
 static void v9fs_clear_inode(struct inode *);
-static struct super_operations v9fs_super_ops;
+static const struct super_operations v9fs_super_ops;
 
 /**
  * v9fs_clear_inode - release an inode
@@ -263,7 +263,7 @@ v9fs_umount_begin(struct vfsmount *vfsmnt, int flags)
 		v9fs_session_cancel(v9ses);
 }
 
-static struct super_operations v9fs_super_ops = {
+static const struct super_operations v9fs_super_ops = {
 	.statfs = simple_statfs,
 	.clear_inode = v9fs_clear_inode,
 	.show_options = v9fs_show_options,
diff --git a/fs/Kconfig b/fs/Kconfig
index 8cd2417..488521e 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -426,7 +426,6 @@ config OCFS2_FS
 	select CONFIGFS_FS
 	select JBD
 	select CRC32
-	select INET
 	help
 	  OCFS2 is a general purpose extent based shared disk cluster file
 	  system with many similarities to ext3. It supports 64 bit inode
@@ -675,12 +674,6 @@ config ZISOFS
 	  necessary to create such a filesystem.  Say Y here if you want to be
 	  able to read such compressed CD-ROMs.
 
-config ZISOFS_FS
-# for fs/nls/Config.in
-	tristate
-	depends on ZISOFS
-	default ISO9660_FS
-
 config UDF_FS
 	tristate "UDF file system support"
 	help
@@ -1095,7 +1088,7 @@ config AFFS_FS
 
 config ECRYPT_FS
 	tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && KEYS && CRYPTO
+	depends on EXPERIMENTAL && KEYS && CRYPTO && NET
 	help
 	  Encrypted filesystem that operates on the VFS layer.  See
 	  <file:Documentation/ecryptfs.txt> to learn more about
diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index 29217ff..936f2af 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -84,7 +84,7 @@ void __adfs_error(struct super_block *sb, const char *function,
  */
 
 /* dir_*.c */
-extern struct inode_operations adfs_dir_inode_operations;
+extern const struct inode_operations adfs_dir_inode_operations;
 extern const struct file_operations adfs_dir_operations;
 extern struct dentry_operations adfs_dentry_operations;
 extern struct adfs_dir_ops adfs_f_dir_ops;
@@ -93,7 +93,7 @@ extern struct adfs_dir_ops adfs_fplus_dir_ops;
 extern int adfs_dir_update(struct super_block *sb, struct object_info *obj);
 
 /* file.c */
-extern struct inode_operations adfs_file_inode_operations;
+extern const struct inode_operations adfs_file_inode_operations;
 extern const struct file_operations adfs_file_operations;
 
 static inline __u32 signed_asl(__u32 val, signed int shift)
diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index 2b89038..fc1a8dc 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -295,7 +295,7 @@ adfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
 /*
  * directories can handle most operations...
  */
-struct inode_operations adfs_dir_inode_operations = {
+const struct inode_operations adfs_dir_inode_operations = {
 	.lookup		= adfs_lookup,
 	.setattr	= adfs_notify_change,
 };
diff --git a/fs/adfs/file.c b/fs/adfs/file.c
index 6101ea6..f544a28 100644
--- a/fs/adfs/file.c
+++ b/fs/adfs/file.c
@@ -36,6 +36,6 @@ const struct file_operations adfs_file_operations = {
 	.sendfile	= generic_file_sendfile,
 };
 
-struct inode_operations adfs_file_inode_operations = {
+const struct inode_operations adfs_file_inode_operations = {
 	.setattr	= adfs_notify_change,
 };
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 5023351..2e5f2c8 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -254,7 +254,7 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(adfs_inode_cachep);
 }
 
-static struct super_operations adfs_sops = {
+static const struct super_operations adfs_sops = {
 	.alloc_inode	= adfs_alloc_inode,
 	.destroy_inode	= adfs_destroy_inode,
 	.write_inode	= adfs_write_inode,
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index 1dc8438..7db2d28 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -188,9 +188,9 @@ extern void   affs_dir_truncate(struct inode *);
 
 /* jump tables */
 
-extern struct inode_operations	 affs_file_inode_operations;
-extern struct inode_operations	 affs_dir_inode_operations;
-extern struct inode_operations   affs_symlink_inode_operations;
+extern const struct inode_operations	 affs_file_inode_operations;
+extern const struct inode_operations	 affs_dir_inode_operations;
+extern const struct inode_operations   affs_symlink_inode_operations;
 extern const struct file_operations	 affs_file_operations;
 extern const struct file_operations	 affs_file_operations_ofs;
 extern const struct file_operations	 affs_dir_operations;
diff --git a/fs/affs/dir.c b/fs/affs/dir.c
index cad3ee3..6e3f282 100644
--- a/fs/affs/dir.c
+++ b/fs/affs/dir.c
@@ -26,7 +26,7 @@ const struct file_operations affs_dir_operations = {
 /*
  * directories can handle most operations...
  */
-struct inode_operations affs_dir_inode_operations = {
+const struct inode_operations affs_dir_inode_operations = {
 	.create		= affs_create,
 	.lookup		= affs_lookup,
 	.link		= affs_link,
diff --git a/fs/affs/file.c b/fs/affs/file.c
index 05b5e22..4aa8079 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -38,7 +38,7 @@ const struct file_operations affs_file_operations = {
 	.sendfile	= generic_file_sendfile,
 };
 
-struct inode_operations affs_file_inode_operations = {
+const struct inode_operations affs_file_inode_operations = {
 	.truncate	= affs_truncate,
 	.setattr	= affs_notify_change,
 };
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index 44d439c..fce6848 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -12,7 +12,7 @@
 
 #include "affs.h"
 
-extern struct inode_operations affs_symlink_inode_operations;
+extern const struct inode_operations affs_symlink_inode_operations;
 extern struct timezone sys_tz;
 
 void
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 3de93e7..a324045 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -112,7 +112,7 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(affs_inode_cachep);
 }
 
-static struct super_operations affs_sops = {
+static const struct super_operations affs_sops = {
 	.alloc_inode	= affs_alloc_inode,
 	.destroy_inode	= affs_destroy_inode,
 	.read_inode	= affs_read_inode,
diff --git a/fs/affs/symlink.c b/fs/affs/symlink.c
index f802256..4178253 100644
--- a/fs/affs/symlink.c
+++ b/fs/affs/symlink.c
@@ -70,7 +70,7 @@ const struct address_space_operations affs_symlink_aops = {
 	.readpage	= affs_symlink_readpage,
 };
 
-struct inode_operations affs_symlink_inode_operations = {
+const struct inode_operations affs_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 4acd041..9908462 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -37,7 +37,7 @@ const struct file_operations afs_dir_file_operations = {
 	.readdir	= afs_dir_readdir,
 };
 
-struct inode_operations afs_dir_inode_operations = {
+const struct inode_operations afs_dir_inode_operations = {
 	.lookup		= afs_dir_lookup,
 	.getattr	= afs_inode_getattr,
 #if 0 /* TODO */
diff --git a/fs/afs/file.c b/fs/afs/file.c
index 2e8c426..eeff14c 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -30,7 +30,7 @@ static int afs_file_readpage(struct file *file, struct page *page);
 static void afs_file_invalidatepage(struct page *page, unsigned long offset);
 static int afs_file_releasepage(struct page *page, gfp_t gfp_flags);
 
-struct inode_operations afs_file_inode_operations = {
+const struct inode_operations afs_file_inode_operations = {
 	.getattr	= afs_inode_getattr,
 };
 
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index e88b3b6..5151d5da 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -63,14 +63,14 @@ extern struct cachefs_index_def afs_cache_cell_index_def;
 /*
  * dir.c
  */
-extern struct inode_operations afs_dir_inode_operations;
+extern const struct inode_operations afs_dir_inode_operations;
 extern const struct file_operations afs_dir_file_operations;
 
 /*
  * file.c
  */
 extern const struct address_space_operations afs_fs_aops;
-extern struct inode_operations afs_file_inode_operations;
+extern const struct inode_operations afs_file_inode_operations;
 
 #ifdef AFS_CACHING_SUPPORT
 extern int afs_cache_get_page_cookie(struct page *page,
@@ -104,7 +104,7 @@ extern struct cachefs_netfs afs_cache_netfs;
 /*
  * mntpt.c
  */
-extern struct inode_operations afs_mntpt_inode_operations;
+extern const struct inode_operations afs_mntpt_inode_operations;
 extern const struct file_operations afs_mntpt_file_operations;
 extern struct afs_timer afs_mntpt_expiry_timer;
 extern struct afs_timer_ops afs_mntpt_expiry_timer_ops;
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 8f74e84..fdf23b2 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -36,7 +36,7 @@ const struct file_operations afs_mntpt_file_operations = {
 	.open		= afs_mntpt_open,
 };
 
-struct inode_operations afs_mntpt_inode_operations = {
+const struct inode_operations afs_mntpt_inode_operations = {
 	.lookup		= afs_mntpt_lookup,
 	.follow_link	= afs_mntpt_follow_link,
 	.readlink	= page_readlink,
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 18d9b77..eb7e323 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -56,7 +56,7 @@ struct file_system_type afs_fs_type = {
 	.fs_flags	= FS_BINARY_MOUNTDATA,
 };
 
-static struct super_operations afs_super_ops = {
+static const struct super_operations afs_super_ops = {
 	.statfs		= simple_statfs,
 	.alloc_inode	= afs_alloc_inode,
 	.drop_inode	= generic_delete_inode,
diff --git a/fs/aio.c b/fs/aio.c
index 55991e4..0b4ee0a 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -132,7 +132,7 @@ static int aio_setup_ring(struct kioctx *ctx)
 	dprintk("attempting mmap of %lu bytes\n", info->mmap_size);
 	down_write(&ctx->mm->mmap_sem);
 	info->mmap_base = do_mmap(NULL, 0, info->mmap_size, 
-				  PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE,
+				  PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE,
 				  0);
 	if (IS_ERR((void *)info->mmap_base)) {
 		up_write(&ctx->mm->mmap_sem);
@@ -211,11 +211,10 @@ static struct kioctx *ioctx_alloc(unsigned nr_events)
 	if ((unsigned long)nr_events > aio_max_nr)
 		return ERR_PTR(-EAGAIN);
 
-	ctx = kmem_cache_alloc(kioctx_cachep, GFP_KERNEL);
+	ctx = kmem_cache_zalloc(kioctx_cachep, GFP_KERNEL);
 	if (!ctx)
 		return ERR_PTR(-ENOMEM);
 
-	memset(ctx, 0, sizeof(*ctx));
 	ctx->max_reqs = nr_events;
 	mm = ctx->mm = current->mm;
 	atomic_inc(&mm->mm_count);
diff --git a/fs/autofs/autofs_i.h b/fs/autofs/autofs_i.h
index 906ba5c..4ef5444 100644
--- a/fs/autofs/autofs_i.h
+++ b/fs/autofs/autofs_i.h
@@ -142,8 +142,8 @@ struct autofs_dir_ent *autofs_expire(struct super_block *,struct autofs_sb_info
 
 /* Operations structures */
 
-extern struct inode_operations autofs_root_inode_operations;
-extern struct inode_operations autofs_symlink_inode_operations;
+extern const struct inode_operations autofs_root_inode_operations;
+extern const struct inode_operations autofs_symlink_inode_operations;
 extern const struct file_operations autofs_root_operations;
 
 /* Initializing function */
diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index f968d13..aa0b61f 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -52,7 +52,7 @@ out_kill_sb:
 
 static void autofs_read_inode(struct inode *inode);
 
-static struct super_operations autofs_sops = {
+static const struct super_operations autofs_sops = {
 	.read_inode	= autofs_read_inode,
 	.statfs		= simple_statfs,
 };
diff --git a/fs/autofs/root.c b/fs/autofs/root.c
index e698c51..f259720 100644
--- a/fs/autofs/root.c
+++ b/fs/autofs/root.c
@@ -32,7 +32,7 @@ const struct file_operations autofs_root_operations = {
 	.ioctl		= autofs_root_ioctl,
 };
 
-struct inode_operations autofs_root_inode_operations = {
+const struct inode_operations autofs_root_inode_operations = {
         .lookup		= autofs_root_lookup,
         .unlink		= autofs_root_unlink,
         .symlink	= autofs_root_symlink,
diff --git a/fs/autofs/symlink.c b/fs/autofs/symlink.c
index c74f2eb..7ce9cb2 100644
--- a/fs/autofs/symlink.c
+++ b/fs/autofs/symlink.c
@@ -20,7 +20,7 @@ static void *autofs_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return NULL;
 }
 
-struct inode_operations autofs_symlink_inode_operations = {
+const struct inode_operations autofs_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= autofs_follow_link
 };
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index 216b1a3..6b4cec3 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -168,11 +168,11 @@ int autofs4_expire_multi(struct super_block *, struct vfsmount *,
 
 /* Operations structures */
 
-extern struct inode_operations autofs4_symlink_inode_operations;
-extern struct inode_operations autofs4_dir_inode_operations;
-extern struct inode_operations autofs4_root_inode_operations;
-extern struct inode_operations autofs4_indirect_root_inode_operations;
-extern struct inode_operations autofs4_direct_root_inode_operations;
+extern const struct inode_operations autofs4_symlink_inode_operations;
+extern const struct inode_operations autofs4_dir_inode_operations;
+extern const struct inode_operations autofs4_root_inode_operations;
+extern const struct inode_operations autofs4_indirect_root_inode_operations;
+extern const struct inode_operations autofs4_direct_root_inode_operations;
 extern const struct file_operations autofs4_dir_operations;
 extern const struct file_operations autofs4_root_operations;
 
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index e8f6c5a..5e458e0 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -196,7 +196,7 @@ static int autofs4_show_options(struct seq_file *m, struct vfsmount *mnt)
 	return 0;
 }
 
-static struct super_operations autofs4_sops = {
+static const struct super_operations autofs4_sops = {
 	.statfs		= simple_statfs,
 	.show_options	= autofs4_show_options,
 };
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 8d05b9f..47fee96 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -47,7 +47,7 @@ const struct file_operations autofs4_dir_operations = {
 	.readdir	= autofs4_dir_readdir,
 };
 
-struct inode_operations autofs4_indirect_root_inode_operations = {
+const struct inode_operations autofs4_indirect_root_inode_operations = {
 	.lookup		= autofs4_lookup,
 	.unlink		= autofs4_dir_unlink,
 	.symlink	= autofs4_dir_symlink,
@@ -55,7 +55,7 @@ struct inode_operations autofs4_indirect_root_inode_operations = {
 	.rmdir		= autofs4_dir_rmdir,
 };
 
-struct inode_operations autofs4_direct_root_inode_operations = {
+const struct inode_operations autofs4_direct_root_inode_operations = {
 	.lookup		= autofs4_lookup,
 	.unlink		= autofs4_dir_unlink,
 	.mkdir		= autofs4_dir_mkdir,
@@ -63,7 +63,7 @@ struct inode_operations autofs4_direct_root_inode_operations = {
 	.follow_link	= autofs4_follow_link,
 };
 
-struct inode_operations autofs4_dir_inode_operations = {
+const struct inode_operations autofs4_dir_inode_operations = {
 	.lookup		= autofs4_lookup,
 	.unlink		= autofs4_dir_unlink,
 	.symlink	= autofs4_dir_symlink,
diff --git a/fs/autofs4/symlink.c b/fs/autofs4/symlink.c
index 2ea2c98..b4ea829 100644
--- a/fs/autofs4/symlink.c
+++ b/fs/autofs4/symlink.c
@@ -19,7 +19,7 @@ static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return NULL;
 }
 
-struct inode_operations autofs4_symlink_inode_operations = {
+const struct inode_operations autofs4_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= autofs4_follow_link
 };
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index 869f519..efeab2f 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -291,7 +291,7 @@ static int bad_inode_removexattr(struct dentry *dentry, const char *name)
 	return -EIO;
 }
 
-static struct inode_operations bad_inode_ops =
+static const struct inode_operations bad_inode_ops =
 {
 	.create		= bad_inode_create,
 	.lookup		= bad_inode_lookup,
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index 481e59b..cc6cc8e 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -68,7 +68,7 @@ static const struct file_operations befs_dir_operations = {
 	.readdir	= befs_readdir,
 };
 
-static struct inode_operations befs_dir_inode_operations = {
+static const struct inode_operations befs_dir_inode_operations = {
 	.lookup		= befs_lookup,
 };
 
@@ -78,7 +78,7 @@ static const struct address_space_operations befs_aops = {
 	.bmap		= befs_bmap,
 };
 
-static struct inode_operations befs_symlink_inode_operations = {
+static const struct inode_operations befs_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= befs_follow_link,
 	.put_link	= befs_put_link,
diff --git a/fs/bfs/bfs.h b/fs/bfs/bfs.h
index 31973bb..130f6c6 100644
--- a/fs/bfs/bfs.h
+++ b/fs/bfs/bfs.h
@@ -48,12 +48,12 @@ static inline struct bfs_inode_info *BFS_I(struct inode *inode)
 
 
 /* file.c */
-extern struct inode_operations bfs_file_inops;
+extern const struct inode_operations bfs_file_inops;
 extern const struct file_operations bfs_file_operations;
 extern const struct address_space_operations bfs_aops;
 
 /* dir.c */
-extern struct inode_operations bfs_dir_inops;
+extern const struct inode_operations bfs_dir_inops;
 extern const struct file_operations bfs_dir_operations;
 
 #endif /* _FS_BFS_BFS_H */
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index 2a746e6..097f149 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -260,7 +260,7 @@ end_rename:
 	return error;
 }
 
-struct inode_operations bfs_dir_inops = {
+const struct inode_operations bfs_dir_inops = {
 	.create			= bfs_create,
 	.lookup			= bfs_lookup,
 	.link			= bfs_link,
diff --git a/fs/bfs/file.c b/fs/bfs/file.c
index a9164a8..ef4d1fa 100644
--- a/fs/bfs/file.c
+++ b/fs/bfs/file.c
@@ -164,4 +164,4 @@ const struct address_space_operations bfs_aops = {
 	.bmap		= bfs_bmap,
 };
 
-struct inode_operations bfs_file_inops;
+const struct inode_operations bfs_file_inops;
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 134c999..93d6219 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -270,7 +270,7 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(bfs_inode_cachep);
 }
 
-static struct super_operations bfs_sops = {
+static const struct super_operations bfs_sops = {
 	.alloc_inode	= bfs_alloc_inode,
 	.destroy_inode	= bfs_destroy_inode,
 	.read_inode	= bfs_read_inode,
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index a4d933a..5810aa1 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -372,7 +372,7 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm,
 	down_write(&current->mm->mmap_sem);
 	current->mm->start_brk = do_mmap(NULL, 0, stack_size,
 					 PROT_READ | PROT_WRITE | PROT_EXEC,
-					 MAP_PRIVATE | MAP_ANON | MAP_GROWSDOWN,
+					 MAP_PRIVATE | MAP_ANONYMOUS | MAP_GROWSDOWN,
 					 0);
 
 	if (IS_ERR_VALUE(current->mm->start_brk)) {
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index ae8595d..7b0265d 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -419,7 +419,7 @@ static int load_flat_file(struct linux_binprm * bprm,
 	unsigned long textpos = 0, datapos = 0, result;
 	unsigned long realdatastart = 0;
 	unsigned long text_len, data_len, bss_len, stack_len, flags;
-	unsigned long memp = 0; /* for finding the brk area */
+	unsigned long len, reallen, memp = 0;
 	unsigned long extra, rlim;
 	unsigned long *reloc = 0, *rp;
 	struct inode *inode;
@@ -540,10 +540,18 @@ static int load_flat_file(struct linux_binprm * bprm,
 			goto err;
 		}
 
+		len = data_len + extra + MAX_SHARED_LIBS * sizeof(unsigned long);
 		down_write(&current->mm->mmap_sem);
-		realdatastart = do_mmap(0, 0, data_len + extra +
-				MAX_SHARED_LIBS * sizeof(unsigned long),
-				PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE, 0);
+		realdatastart = do_mmap(0, 0, len,
+			PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE, 0);
+		/* Remap to use all availabe slack region space */
+		if (realdatastart && (realdatastart < (unsigned long)-4096)) {
+			reallen = ksize(realdatastart);
+			if (reallen > len) {
+				realdatastart = do_mremap(realdatastart, len,
+					reallen, MREMAP_FIXED, realdatastart);
+			}
+		}
 		up_write(&current->mm->mmap_sem);
 
 		if (realdatastart == 0 || realdatastart >= (unsigned long)-4096) {
@@ -584,11 +592,20 @@ static int load_flat_file(struct linux_binprm * bprm,
 
 	} else {
 
+		len = text_len + data_len + extra + MAX_SHARED_LIBS * sizeof(unsigned long);
 		down_write(&current->mm->mmap_sem);
-		textpos = do_mmap(0, 0, text_len + data_len + extra +
-					MAX_SHARED_LIBS * sizeof(unsigned long),
-				PROT_READ | PROT_EXEC | PROT_WRITE, MAP_PRIVATE, 0);
+		textpos = do_mmap(0, 0, len,
+			PROT_READ | PROT_EXEC | PROT_WRITE, MAP_PRIVATE, 0);
+		/* Remap to use all availabe slack region space */
+		if (textpos && (textpos < (unsigned long) -4096)) {
+			reallen = ksize(textpos);
+			if (reallen > len) {
+				textpos = do_mremap(textpos, len, reallen,
+					MREMAP_FIXED, textpos);
+			}
+		}
 		up_write(&current->mm->mmap_sem);
+
 		if (!textpos  || textpos >= (unsigned long) -4096) {
 			if (!textpos)
 				textpos = (unsigned long) -ENOMEM;
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index c2e0825..e6f5799 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -719,7 +719,7 @@ static const struct file_operations bm_status_operations = {
 
 /* Superblock handling */
 
-static struct super_operations s_ops = {
+static const struct super_operations s_ops = {
 	.statfs		= simple_statfs,
 	.clear_inode	= bm_clear_inode,
 };
diff --git a/fs/block_dev.c b/fs/block_dev.c
index fc7028b6..0c59b70 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -489,7 +489,7 @@ static void bdev_clear_inode(struct inode *inode)
 	spin_unlock(&bdev_lock);
 }
 
-static struct super_operations bdev_sops = {
+static const struct super_operations bdev_sops = {
 	.statfs = simple_statfs,
 	.alloc_inode = bdev_alloc_inode,
 	.destroy_inode = bdev_destroy_inode,
diff --git a/fs/buffer.c b/fs/buffer.c
index 1ad674f..f99c509 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -78,6 +78,7 @@ EXPORT_SYMBOL(__lock_buffer);
 
 void fastcall unlock_buffer(struct buffer_head *bh)
 {
+	smp_mb__before_clear_bit();
 	clear_buffer_locked(bh);
 	smp_mb__after_clear_bit();
 	wake_up_bit(&bh->b_state, BH_Lock);
@@ -345,7 +346,7 @@ void invalidate_bdev(struct block_device *bdev, int destroy_dirty_buffers)
 	 * We really want to use invalidate_inode_pages2() for
 	 * that, but not until that's cleaned up.
 	 */
-	invalidate_inode_pages(mapping);
+	invalidate_mapping_pages(mapping, 0, -1);
 }
 
 /*
@@ -1282,11 +1283,11 @@ static void bh_lru_install(struct buffer_head *bh)
  * Look up the bh in this cpu's LRU.  If it's there, move it to the head.
  */
 static struct buffer_head *
-lookup_bh_lru(struct block_device *bdev, sector_t block, int size)
+lookup_bh_lru(struct block_device *bdev, sector_t block, unsigned size)
 {
 	struct buffer_head *ret = NULL;
 	struct bh_lru *lru;
-	int i;
+	unsigned int i;
 
 	check_irqs_on();
 	bh_lru_lock();
@@ -1318,7 +1319,7 @@ lookup_bh_lru(struct block_device *bdev, sector_t block, int size)
  * NULL
  */
 struct buffer_head *
-__find_get_block(struct block_device *bdev, sector_t block, int size)
+__find_get_block(struct block_device *bdev, sector_t block, unsigned size)
 {
 	struct buffer_head *bh = lookup_bh_lru(bdev, block, size);
 
@@ -1346,7 +1347,7 @@ EXPORT_SYMBOL(__find_get_block);
  * attempt is failing.  FIXME, perhaps?
  */
 struct buffer_head *
-__getblk(struct block_device *bdev, sector_t block, int size)
+__getblk(struct block_device *bdev, sector_t block, unsigned size)
 {
 	struct buffer_head *bh = __find_get_block(bdev, block, size);
 
@@ -1360,7 +1361,7 @@ EXPORT_SYMBOL(__getblk);
 /*
  * Do async read-ahead on a buffer..
  */
-void __breadahead(struct block_device *bdev, sector_t block, int size)
+void __breadahead(struct block_device *bdev, sector_t block, unsigned size)
 {
 	struct buffer_head *bh = __getblk(bdev, block, size);
 	if (likely(bh)) {
@@ -1380,7 +1381,7 @@ EXPORT_SYMBOL(__breadahead);
  *  It returns NULL if the block was unreadable.
  */
 struct buffer_head *
-__bread(struct block_device *bdev, sector_t block, int size)
+__bread(struct block_device *bdev, sector_t block, unsigned size)
 {
 	struct buffer_head *bh = __getblk(bdev, block, size);
 
@@ -1439,6 +1440,7 @@ static void discard_buffer(struct buffer_head * bh)
 	clear_buffer_req(bh);
 	clear_buffer_new(bh);
 	clear_buffer_delay(bh);
+	clear_buffer_unwritten(bh);
 	unlock_buffer(bh);
 }
 
@@ -1822,6 +1824,7 @@ static int __block_prepare_write(struct inode *inode, struct page *page,
 			continue; 
 		}
 		if (!buffer_uptodate(bh) && !buffer_delay(bh) &&
+		    !buffer_unwritten(bh) &&
 		     (block_start < from || block_end > to)) {
 			ll_rw_block(READ, 1, &bh);
 			*wait_bh++=bh;
@@ -2543,7 +2546,7 @@ int block_truncate_page(struct address_space *mapping,
 	if (PageUptodate(page))
 		set_buffer_uptodate(bh);
 
-	if (!buffer_uptodate(bh) && !buffer_delay(bh)) {
+	if (!buffer_uptodate(bh) && !buffer_delay(bh) && !buffer_unwritten(bh)) {
 		err = -EIO;
 		ll_rw_block(READ, 1, &bh);
 		wait_on_buffer(bh);
diff --git a/fs/char_dev.c b/fs/char_dev.c
index a885f46..e6194e2 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -108,6 +108,13 @@ __register_chrdev_region(unsigned int major, unsigned int baseminor,
 	/* temporary */
 	if (major == 0) {
 		for (i = ARRAY_SIZE(chrdevs)-1; i > 0; i--) {
+			/*
+			 * Disallow the LANANA-assigned LOCAL/EXPERIMENTAL
+			 * majors
+			 */
+			if ((60 <= i && i <= 63) || (120 <= i && i <= 127) ||
+					(240 <= i && i <= 254))
+				continue;
 			if (chrdevs[i] == NULL)
 				break;
 		}
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index d04d2f7..85e3850 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,6 +1,8 @@
 Version 1.47
 ------------
 Fix oops in list_del during mount caused by unaligned string.
+Seek to SEEK_END forces check for update of file size for non-cached
+files.
 
 Version 1.46
 ------------
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 10c9029..e8287c4 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -64,7 +64,7 @@ extern struct task_struct * oplockThread; /* remove sparse warning */
 struct task_struct * oplockThread = NULL;
 extern struct task_struct * dnotifyThread; /* remove sparse warning */
 struct task_struct * dnotifyThread = NULL;
-static struct super_operations cifs_super_ops; 
+static const struct super_operations cifs_super_ops;
 unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
 module_param(CIFSMaxBufSize, int, 0);
 MODULE_PARM_DESC(CIFSMaxBufSize,"Network buffer size (not including header). Default: 16384 Range: 8192 to 130048");
@@ -453,7 +453,7 @@ static int cifs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations cifs_super_ops = {
+static const struct super_operations cifs_super_ops = {
 	.read_inode = cifs_read_inode,
 	.put_super = cifs_put_super,
 	.statfs = cifs_statfs,
@@ -511,7 +511,15 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int origin)
 {
 	/* origin == SEEK_END => we must revalidate the cached file length */
 	if (origin == SEEK_END) {
-		int retval = cifs_revalidate(file->f_path.dentry);
+		int retval;
+
+		/* some applications poll for the file length in this strange
+		   way so we must seek to end on non-oplocked files by
+		   setting the revalidate time to zero */
+		if(file->f_path.dentry->d_inode)		
+			CIFS_I(file->f_path.dentry->d_inode)->time = 0;
+
+		retval = cifs_revalidate(file->f_path.dentry);
 		if (retval < 0)
 			return (loff_t)retval;
 	}
@@ -525,7 +533,7 @@ static struct file_system_type cifs_fs_type = {
 	.kill_sb = kill_anon_super,
 	/*  .fs_flags */
 };
-struct inode_operations cifs_dir_inode_ops = {
+const struct inode_operations cifs_dir_inode_ops = {
 	.create = cifs_create,
 	.lookup = cifs_lookup,
 	.getattr = cifs_getattr,
@@ -547,7 +555,7 @@ struct inode_operations cifs_dir_inode_ops = {
 #endif
 };
 
-struct inode_operations cifs_file_inode_ops = {
+const struct inode_operations cifs_file_inode_ops = {
 /*	revalidate:cifs_revalidate, */
 	.setattr = cifs_setattr,
 	.getattr = cifs_getattr, /* do we need this anymore? */
@@ -561,7 +569,7 @@ struct inode_operations cifs_file_inode_ops = {
 #endif 
 };
 
-struct inode_operations cifs_symlink_inode_ops = {
+const struct inode_operations cifs_symlink_inode_ops = {
 	.readlink = generic_readlink, 
 	.follow_link = cifs_follow_link,
 	.put_link = cifs_put_link,
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 8aa66dc..01ae24a 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -36,13 +36,13 @@ extern const struct address_space_operations cifs_addr_ops;
 extern const struct address_space_operations cifs_addr_ops_smallbuf;
 
 /* Functions related to super block operations */
-/* extern struct super_operations cifs_super_ops;*/
+/* extern const struct super_operations cifs_super_ops;*/
 extern void cifs_read_inode(struct inode *);
 extern void cifs_delete_inode(struct inode *);
 /* extern void cifs_write_inode(struct inode *); *//* BB not needed yet */
 
 /* Functions related to inodes */
-extern struct inode_operations cifs_dir_inode_ops;
+extern const struct inode_operations cifs_dir_inode_ops;
 extern int cifs_create(struct inode *, struct dentry *, int, 
 		       struct nameidata *);
 extern struct dentry * cifs_lookup(struct inode *, struct dentry *,
@@ -58,8 +58,8 @@ extern int cifs_revalidate(struct dentry *);
 extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 extern int cifs_setattr(struct dentry *, struct iattr *);
 
-extern struct inode_operations cifs_file_inode_ops;
-extern struct inode_operations cifs_symlink_inode_ops;
+extern const struct inode_operations cifs_file_inode_ops;
+extern const struct inode_operations cifs_symlink_inode_ops;
 
 /* Functions related to files and directories */
 extern const struct file_operations cifs_file_ops;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 8a49b2e..e9dcf5e 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1146,7 +1146,7 @@ static int cifs_writepages(struct address_space *mapping,
 	pgoff_t end;
 	pgoff_t index;
  	int range_whole = 0;
-	struct kvec iov[32];
+	struct kvec * iov;
 	int len;
 	int n_iov = 0;
 	pgoff_t next;
@@ -1171,15 +1171,21 @@ static int cifs_writepages(struct address_space *mapping,
 	if((cifs_sb->tcon->ses) && (cifs_sb->tcon->ses->server))
 		if(cifs_sb->tcon->ses->server->secMode &
                           (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
-			if(!experimEnabled)
+			if(!experimEnabled) 
 				return generic_writepages(mapping, wbc);
 
+	iov = kmalloc(32 * sizeof(struct kvec), GFP_KERNEL);
+	if(iov == NULL)
+		return generic_writepages(mapping, wbc);
+
+
 	/*
 	 * BB: Is this meaningful for a non-block-device file system?
 	 * If it is, we should test it again after we do I/O
 	 */
 	if (wbc->nonblocking && bdi_write_congested(bdi)) {
 		wbc->encountered_congestion = 1;
+		kfree(iov);
 		return 0;
 	}
 
@@ -1345,7 +1351,7 @@ retry:
 		mapping->writeback_index = index;
 
 	FreeXid(xid);
-
+	kfree(iov);
 	return rc;
 }
 
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 99dfb53..782940b 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -156,9 +156,9 @@ static void fill_in_inode(struct inode *tmp_inode, int new_buf_type,
 		tmp_inode->i_atime = cnvrtDosUnixTm(
 				le16_to_cpu(pfindData->LastAccessDate),
 				le16_to_cpu(pfindData->LastAccessTime));
-                tmp_inode->i_ctime = cnvrtDosUnixTm(
-                                le16_to_cpu(pfindData->LastWriteDate),
-                                le16_to_cpu(pfindData->LastWriteTime));
+		tmp_inode->i_ctime = cnvrtDosUnixTm(
+				le16_to_cpu(pfindData->LastWriteDate),
+				le16_to_cpu(pfindData->LastWriteTime));
 		AdjustForTZ(cifs_sb->tcon, tmp_inode);
 		attr = le16_to_cpu(pfindData->Attributes);
 		allocation_size = le32_to_cpu(pfindData->AllocationSize);
diff --git a/fs/cifs/smbdes.c b/fs/cifs/smbdes.c
index 7a1b2b9..1b1daf6 100644
--- a/fs/cifs/smbdes.c
+++ b/fs/cifs/smbdes.c
@@ -196,7 +196,7 @@ dohash(char *out, char *in, char *key, int forw)
 	char c[28];
 	char d[28];
 	char *cd;
-	char ki[16][48];
+	char (*ki)[48];
 	char *pd1;
 	char l[32], r[32];
 	char *rl;
@@ -206,6 +206,12 @@ dohash(char *out, char *in, char *key, int forw)
 	if(pk1 == NULL)
 		return;
 
+	ki = kmalloc(16*48, GFP_KERNEL);
+	if(ki == NULL) {
+		kfree(pk1);
+		return;
+	}
+
 	cd = pk1 + 56;
 	pd1= cd  + 56;
 	rl = pd1 + 64;
@@ -243,6 +249,7 @@ dohash(char *out, char *in, char *key, int forw)
 		er = kmalloc(48+48+32+32+32, GFP_KERNEL);
 		if(er == NULL) {
 			kfree(pk1);
+			kfree(ki);
 			return;
 		}
 		erk = er+48;
@@ -290,6 +297,7 @@ dohash(char *out, char *in, char *key, int forw)
 
 	permute(out, rl, perm6, 64);
 	kfree(pk1);
+	kfree(ki);
 }
 
 static void
diff --git a/fs/coda/cnode.c b/fs/coda/cnode.c
index 4c9fecb..28c8727 100644
--- a/fs/coda/cnode.c
+++ b/fs/coda/cnode.c
@@ -16,7 +16,7 @@ static inline int coda_fideq(struct CodaFid *fid1, struct CodaFid *fid2)
 	return memcmp(fid1, fid2, sizeof(*fid1)) == 0;
 }
 
-static struct inode_operations coda_symlink_inode_operations = {
+static const struct inode_operations coda_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index 0c6f7f3..9ddf5ed 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -66,7 +66,7 @@ static struct dentry_operations coda_dentry_operations =
 	.d_delete	= coda_dentry_delete,
 };
 
-struct inode_operations coda_dir_inode_operations =
+const struct inode_operations coda_dir_inode_operations =
 {
 	.create		= coda_create,
 	.lookup		= coda_lookup,
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index 01395de..614175a 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -90,7 +90,7 @@ static int coda_remount(struct super_block *sb, int *flags, char *data)
 }
 
 /* exported operations */
-static struct super_operations coda_super_operations =
+static const struct super_operations coda_super_operations =
 {
 	.alloc_inode	= coda_alloc_inode,
 	.destroy_inode	= coda_destroy_inode,
@@ -271,7 +271,7 @@ int coda_setattr(struct dentry *de, struct iattr *iattr)
 	return error;
 }
 
-struct inode_operations coda_file_inode_operations = {
+const struct inode_operations coda_file_inode_operations = {
 	.permission	= coda_permission,
 	.getattr	= coda_getattr,
 	.setattr	= coda_setattr,
diff --git a/fs/coda/pioctl.c b/fs/coda/pioctl.c
index 214822b..2bf3026 100644
--- a/fs/coda/pioctl.c
+++ b/fs/coda/pioctl.c
@@ -30,7 +30,7 @@ static int coda_pioctl(struct inode * inode, struct file * filp,
                        unsigned int cmd, unsigned long user_data);
 
 /* exported from this file */
-struct inode_operations coda_ioctl_inode_operations =
+const struct inode_operations coda_ioctl_inode_operations =
 {
 	.permission	= coda_ioctl_permission,
 	.setattr	= coda_setattr,
diff --git a/fs/coda/sysctl.c b/fs/coda/sysctl.c
index 1c82e9a..db3b1a9 100644
--- a/fs/coda/sysctl.c
+++ b/fs/coda/sysctl.c
@@ -15,6 +15,7 @@
 #include <linux/mm.h>
 #include <linux/sysctl.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/stat.h>
 #include <linux/ctype.h>
@@ -84,15 +85,11 @@ static int do_reset_coda_cache_inv_stats( ctl_table * table, int write,
 	return 0;
 }
 
-static int coda_vfs_stats_get_info( char * buffer, char ** start,
-				    off_t offset, int length)
+static int proc_vfs_stats_show(struct seq_file *m, void *v)
 {
-	int len=0;
-	off_t begin;
 	struct coda_vfs_stats * ps = & coda_vfs_stat;
   
-  /* this works as long as we are below 1024 characters! */
-	len += sprintf( buffer,
+	seq_printf(m,
 			"Coda VFS statistics\n"
 			"===================\n\n"
 			"File Operations:\n"
@@ -132,28 +129,14 @@ static int coda_vfs_stats_get_info( char * buffer, char ** start,
 			ps->rmdir,
 			ps->rename,
 			ps->permission); 
-
-	begin = offset;
-	*start = buffer + begin;
-	len -= begin;
-
-	if ( len > length )
-		len = length;
-	if ( len < 0 )
-		len = 0;
-
-	return len;
+	return 0;
 }
 
-static int coda_cache_inv_stats_get_info( char * buffer, char ** start,
-					  off_t offset, int length)
+static int proc_cache_inv_stats_show(struct seq_file *m, void *v)
 {
-	int len=0;
-	off_t begin;
 	struct coda_cache_inv_stats * ps = & coda_cache_inv_stat;
   
-	/* this works as long as we are below 1024 characters! */
-	len += sprintf( buffer,
+	seq_printf(m,
 			"Coda cache invalidation statistics\n"
 			"==================================\n\n"
 			"flush\t\t%9d\n"
@@ -170,19 +153,35 @@ static int coda_cache_inv_stats_get_info( char * buffer, char ** start,
 			ps->zap_vnode,
 			ps->purge_fid,
 			ps->replace );
-  
-	begin = offset;
-	*start = buffer + begin;
-	len -= begin;
+	return 0;
+}
 
-	if ( len > length )
-		len = length;
-	if ( len < 0 )
-		len = 0;
+static int proc_vfs_stats_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, proc_vfs_stats_show, NULL);
+}
 
-	return len;
+static int proc_cache_inv_stats_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, proc_cache_inv_stats_show, NULL);
 }
 
+static const struct file_operations proc_vfs_stats_fops = {
+	.owner		= THIS_MODULE,
+	.open		= proc_vfs_stats_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static const struct file_operations proc_cache_inv_stats_fops = {
+	.owner		= THIS_MODULE,
+	.open		= proc_cache_inv_stats_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 static ctl_table coda_table[] = {
  	{CODA_TIMEOUT, "timeout", &coda_timeout, sizeof(int), 0644, NULL, &proc_dointvec},
  	{CODA_HARD, "hard", &coda_hard, sizeof(int), 0644, NULL, &proc_dointvec},
@@ -212,9 +211,6 @@ static struct proc_dir_entry* proc_fs_coda;
 
 #endif
 
-#define coda_proc_create(name,get_info) \
-	create_proc_info_entry(name, 0, proc_fs_coda, get_info)
-
 void coda_sysctl_init(void)
 {
 	reset_coda_vfs_stats();
@@ -223,9 +219,15 @@ void coda_sysctl_init(void)
 #ifdef CONFIG_PROC_FS
 	proc_fs_coda = proc_mkdir("coda", proc_root_fs);
 	if (proc_fs_coda) {
+		struct proc_dir_entry *pde;
+
 		proc_fs_coda->owner = THIS_MODULE;
-		coda_proc_create("vfs_stats", coda_vfs_stats_get_info);
-		coda_proc_create("cache_inv_stats", coda_cache_inv_stats_get_info);
+		pde = create_proc_entry("vfs_stats", 0, proc_fs_coda);
+		if (pde)
+			pde->proc_fops = &proc_vfs_stats_fops;
+		pde = create_proc_entry("cache_inv_stats", 0, proc_fs_coda);
+		if (pde)
+			pde->proc_fops = &proc_cache_inv_stats_fops;
 	}
 #endif
 
diff --git a/fs/configfs/configfs_internal.h b/fs/configfs/configfs_internal.h
index f92cd30..7b48c03 100644
--- a/fs/configfs/configfs_internal.h
+++ b/fs/configfs/configfs_internal.h
@@ -75,8 +75,8 @@ extern struct super_block * configfs_sb;
 extern const struct file_operations configfs_dir_operations;
 extern const struct file_operations configfs_file_operations;
 extern const struct file_operations bin_fops;
-extern struct inode_operations configfs_dir_inode_operations;
-extern struct inode_operations configfs_symlink_inode_operations;
+extern const struct inode_operations configfs_dir_inode_operations;
+extern const struct inode_operations configfs_symlink_inode_operations;
 
 extern int configfs_symlink(struct inode *dir, struct dentry *dentry,
 			    const char *symname);
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 1814ba446..34750d5 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -72,11 +72,10 @@ static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent * pare
 {
 	struct configfs_dirent * sd;
 
-	sd = kmem_cache_alloc(configfs_dir_cachep, GFP_KERNEL);
+	sd = kmem_cache_zalloc(configfs_dir_cachep, GFP_KERNEL);
 	if (!sd)
 		return NULL;
 
-	memset(sd, 0, sizeof(*sd));
 	atomic_set(&sd->s_count, 1);
 	INIT_LIST_HEAD(&sd->s_links);
 	INIT_LIST_HEAD(&sd->s_children);
@@ -931,7 +930,7 @@ static int configfs_rmdir(struct inode *dir, struct dentry *dentry)
 	return 0;
 }
 
-struct inode_operations configfs_dir_inode_operations = {
+const struct inode_operations configfs_dir_inode_operations = {
 	.mkdir		= configfs_mkdir,
 	.rmdir		= configfs_rmdir,
 	.symlink	= configfs_symlink,
diff --git a/fs/configfs/file.c b/fs/configfs/file.c
index 2a7cb08..d98be5e 100644
--- a/fs/configfs/file.c
+++ b/fs/configfs/file.c
@@ -162,14 +162,17 @@ fill_write_buffer(struct configfs_buffer * buffer, const char __user * buf, size
 	int error;
 
 	if (!buffer->page)
-		buffer->page = (char *)get_zeroed_page(GFP_KERNEL);
+		buffer->page = (char *)__get_free_pages(GFP_KERNEL, 0);
 	if (!buffer->page)
 		return -ENOMEM;
 
-	if (count > PAGE_SIZE)
-		count = PAGE_SIZE;
+	if (count >= PAGE_SIZE)
+		count = PAGE_SIZE - 1;
 	error = copy_from_user(buffer->page,buf,count);
 	buffer->needs_read_fill = 1;
+	/* if buf is assumed to contain a string, terminate it by \0,
+	 * so e.g. sscanf() can scan the string easily */
+	buffer->page[count] = 0;
 	return error ? -EFAULT : count;
 }
 
diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c
index fb18917..2ec9bea 100644
--- a/fs/configfs/inode.c
+++ b/fs/configfs/inode.c
@@ -49,7 +49,7 @@ static struct backing_dev_info configfs_backing_dev_info = {
 	.capabilities	= BDI_CAP_NO_ACCT_DIRTY | BDI_CAP_NO_WRITEBACK,
 };
 
-static struct inode_operations configfs_inode_operations ={
+static const struct inode_operations configfs_inode_operations ={
 	.setattr	= configfs_setattr,
 };
 
diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c
index ed67852..6f57300 100644
--- a/fs/configfs/mount.c
+++ b/fs/configfs/mount.c
@@ -41,7 +41,7 @@ struct super_block * configfs_sb = NULL;
 struct kmem_cache *configfs_dir_cachep;
 static int configfs_mnt_count = 0;
 
-static struct super_operations configfs_ops = {
+static const struct super_operations configfs_ops = {
 	.statfs		= simple_statfs,
 	.drop_inode	= generic_delete_inode,
 };
diff --git a/fs/configfs/symlink.c b/fs/configfs/symlink.c
index fb65e08..22700d2 100644
--- a/fs/configfs/symlink.c
+++ b/fs/configfs/symlink.c
@@ -272,7 +272,7 @@ static void configfs_put_link(struct dentry *dentry, struct nameidata *nd,
 	}
 }
 
-struct inode_operations configfs_symlink_inode_operations = {
+const struct inode_operations configfs_symlink_inode_operations = {
 	.follow_link = configfs_follow_link,
 	.readlink = generic_readlink,
 	.put_link = configfs_put_link,
diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index 6db03fb..facd0c8 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -27,8 +27,8 @@
 
 #include <asm/uaccess.h>
 
-static struct super_operations cramfs_ops;
-static struct inode_operations cramfs_dir_inode_operations;
+static const struct super_operations cramfs_ops;
+static const struct inode_operations cramfs_dir_inode_operations;
 static const struct file_operations cramfs_directory_operations;
 static const struct address_space_operations cramfs_aops;
 
@@ -518,11 +518,11 @@ static const struct file_operations cramfs_directory_operations = {
 	.readdir	= cramfs_readdir,
 };
 
-static struct inode_operations cramfs_dir_inode_operations = {
+static const struct inode_operations cramfs_dir_inode_operations = {
 	.lookup		= cramfs_lookup,
 };
 
-static struct super_operations cramfs_ops = {
+static const struct super_operations cramfs_ops = {
 	.put_super	= cramfs_put_super,
 	.remount_fs	= cramfs_remount,
 	.statfs		= cramfs_statfs,
diff --git a/fs/dcache.c b/fs/dcache.c
index d68631f..b5f6139 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1739,45 +1739,41 @@ shouldnt_be_hashed:
  * @rootmnt: vfsmnt to which the root dentry belongs
  * @buffer: buffer to return value in
  * @buflen: buffer length
+ * @fail_deleted: what to return for deleted files
  *
- * Convert a dentry into an ASCII path name. If the entry has been deleted
- * the string " (deleted)" is appended. Note that this is ambiguous.
+ * Convert a dentry into an ASCII path name. If the entry has been deleted,
+ * then if @fail_deleted is true, ERR_PTR(-ENOENT) is returned. Otherwise,
+ * the the string " (deleted)" is appended. Note that this is ambiguous.
  *
- * Returns the buffer or an error code if the path was too long.
- *
- * "buflen" should be positive. Caller holds the dcache_lock.
+ * Returns the buffer or an error code.
  */
-static char * __d_path( struct dentry *dentry, struct vfsmount *vfsmnt,
-			struct dentry *root, struct vfsmount *rootmnt,
-			char *buffer, int buflen)
+static char *__d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
+		      struct dentry *root, struct vfsmount *rootmnt,
+		      char *buffer, int buflen, int fail_deleted)
 {
-	char * end = buffer+buflen;
-	char * retval;
-	int namelen;
+	int namelen, is_slash;
+
+	if (buflen < 2)
+		return ERR_PTR(-ENAMETOOLONG);
+	buffer += --buflen;
+	*buffer = '\0';
 
-	*--end = '\0';
-	buflen--;
+	spin_lock(&dcache_lock);
 	if (!IS_ROOT(dentry) && d_unhashed(dentry)) {
-		buflen -= 10;
-		end -= 10;
-		if (buflen < 0)
+		if (fail_deleted) {
+			buffer = ERR_PTR(-ENOENT);
+			goto out;
+		}
+		if (buflen < 10)
 			goto Elong;
-		memcpy(end, " (deleted)", 10);
+		buflen -= 10;
+		buffer -= 10;
+		memcpy(buffer, " (deleted)", 10);
 	}
-
-	if (buflen < 1)
-		goto Elong;
-	/* Get '/' right */
-	retval = end-1;
-	*retval = '/';
-
-	for (;;) {
+	while (dentry != root || vfsmnt != rootmnt) {
 		struct dentry * parent;
 
-		if (dentry == root && vfsmnt == rootmnt)
-			break;
 		if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) {
-			/* Global root? */
 			spin_lock(&vfsmount_lock);
 			if (vfsmnt->mnt_parent == vfsmnt) {
 				spin_unlock(&vfsmount_lock);
@@ -1791,33 +1787,60 @@ static char * __d_path( struct dentry *dentry, struct vfsmount *vfsmnt,
 		parent = dentry->d_parent;
 		prefetch(parent);
 		namelen = dentry->d_name.len;
-		buflen -= namelen + 1;
-		if (buflen < 0)
+		if (buflen <= namelen)
 			goto Elong;
-		end -= namelen;
-		memcpy(end, dentry->d_name.name, namelen);
-		*--end = '/';
-		retval = end;
+		buflen -= namelen + 1;
+		buffer -= namelen;
+		memcpy(buffer, dentry->d_name.name, namelen);
+		*--buffer = '/';
 		dentry = parent;
 	}
+	/* Get '/' right */
+	if (*buffer != '/')
+		*--buffer = '/';
 
-	return retval;
+out:
+	spin_unlock(&dcache_lock);
+	return buffer;
 
 global_root:
+	/*
+	 * We went past the (vfsmount, dentry) we were looking for and have
+	 * either hit a root dentry, a lazily unmounted dentry, an
+	 * unconnected dentry, or the file is on a pseudo filesystem.
+	 */
 	namelen = dentry->d_name.len;
-	buflen -= namelen;
-	if (buflen < 0)
+	is_slash = (namelen == 1 && *dentry->d_name.name == '/');
+	if (is_slash || (dentry->d_sb->s_flags & MS_NOUSER)) {
+		/*
+		 * Make sure we won't return a pathname starting with '/'.
+		 *
+		 * Historically, we also glue together the root dentry and
+		 * remaining name for pseudo filesystems like pipefs, which
+		 * have the MS_NOUSER flag set. This results in pathnames
+		 * like "pipe:[439336]".
+		 */
+		if (*buffer == '/') {
+			buffer++;
+			buflen++;
+		}
+		if (is_slash)
+			goto out;
+	}
+	if (buflen < namelen)
 		goto Elong;
-	retval -= namelen-1;	/* hit the slash */
-	memcpy(retval, dentry->d_name.name, namelen);
-	return retval;
+	buffer -= namelen;
+	memcpy(buffer, dentry->d_name.name, namelen);
+	goto out;
+
 Elong:
-	return ERR_PTR(-ENAMETOOLONG);
+	buffer = ERR_PTR(-ENAMETOOLONG);
+	goto out;
 }
 
 /* write full pathname into buffer and return start of pathname */
-char * d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
-				char *buf, int buflen)
+char *d_path(struct dentry *dentry, struct vfsmount *vfsmnt, char *buf,
+	     int buflen)
 {
 	char *res;
 	struct vfsmount *rootmnt;
@@ -1827,9 +1850,7 @@ char * d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
 	rootmnt = mntget(current->fs->rootmnt);
 	root = dget(current->fs->root);
 	read_unlock(&current->fs->lock);
-	spin_lock(&dcache_lock);
-	res = __d_path(dentry, vfsmnt, root, rootmnt, buf, buflen);
-	spin_unlock(&dcache_lock);
+	res = __d_path(dentry, vfsmnt, root, rootmnt, buf, buflen, 0);
 	dput(root);
 	mntput(rootmnt);
 	return res;
@@ -1855,10 +1876,10 @@ char * d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
  */
 asmlinkage long sys_getcwd(char __user *buf, unsigned long size)
 {
-	int error;
+	int error, len;
 	struct vfsmount *pwdmnt, *rootmnt;
 	struct dentry *pwd, *root;
-	char *page = (char *) __get_free_page(GFP_USER);
+	char *page = (char *) __get_free_page(GFP_USER), *cwd;
 
 	if (!page)
 		return -ENOMEM;
@@ -1870,29 +1891,18 @@ asmlinkage long sys_getcwd(char __user *buf, unsigned long size)
 	root = dget(current->fs->root);
 	read_unlock(&current->fs->lock);
 
-	error = -ENOENT;
-	/* Has the current directory has been unlinked? */
-	spin_lock(&dcache_lock);
-	if (pwd->d_parent == pwd || !d_unhashed(pwd)) {
-		unsigned long len;
-		char * cwd;
-
-		cwd = __d_path(pwd, pwdmnt, root, rootmnt, page, PAGE_SIZE);
-		spin_unlock(&dcache_lock);
-
-		error = PTR_ERR(cwd);
-		if (IS_ERR(cwd))
-			goto out;
+	cwd = __d_path(pwd, pwdmnt, root, rootmnt, page, PAGE_SIZE, 1);
+	error = PTR_ERR(cwd);
+	if (IS_ERR(cwd))
+		goto out;
 
-		error = -ERANGE;
-		len = PAGE_SIZE + page - cwd;
-		if (len <= size) {
-			error = len;
-			if (copy_to_user(buf, cwd, len))
-				error = -EFAULT;
-		}
-	} else
-		spin_unlock(&dcache_lock);
+	error = -ERANGE;
+	len = PAGE_SIZE + page - cwd;
+	if (len <= size) {
+		error = len;
+		if (copy_to_user(buf, cwd, len))
+			error = -EFAULT;
+	}
 
 out:
 	dput(pwd);
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index bf3901a..8d130cc 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -254,7 +254,7 @@ static ssize_t read_file_blob(struct file *file, char __user *user_buf,
 			blob->size);
 }
 
-static struct file_operations fops_blob = {
+static const struct file_operations fops_blob = {
 	.read =		read_file_blob,
 	.open =		default_open,
 };
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index 5f7b5a6..643e57b 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -91,7 +91,7 @@ static int devpts_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations devpts_sops = {
+static const struct super_operations devpts_sops = {
 	.statfs		= simple_statfs,
 	.remount_fs	= devpts_remount,
 };
diff --git a/fs/dlm/Kconfig b/fs/dlm/Kconfig
index b5654a2..6fa7b0d 100644
--- a/fs/dlm/Kconfig
+++ b/fs/dlm/Kconfig
@@ -3,21 +3,21 @@ menu "Distributed Lock Manager"
 
 config DLM
 	tristate "Distributed Lock Manager (DLM)"
-	depends on IPV6 || IPV6=n
+	depends on SYSFS && (IPV6 || IPV6=n)
 	select CONFIGFS_FS
 	select IP_SCTP if DLM_SCTP
 	help
-	A general purpose distributed lock manager for kernel or userspace
-	applications.
+	  A general purpose distributed lock manager for kernel or userspace
+	  applications.
 
 choice
 	prompt "Select DLM communications protocol"
 	depends on DLM
 	default DLM_TCP
 	help
-	The DLM Can use TCP or SCTP for it's network communications.
-	SCTP supports multi-homed operations whereas TCP doesn't.
-	However, SCTP seems to have stability problems at the moment.
+	  The DLM Can use TCP or SCTP for it's network communications.
+	  SCTP supports multi-homed operations whereas TCP doesn't.
+	  However, SCTP seems to have stability problems at the moment.
 
 config DLM_TCP
 	bool "TCP/IP"
@@ -31,8 +31,8 @@ config DLM_DEBUG
 	bool "DLM debugging"
 	depends on DLM
 	help
-	Under the debugfs mount point, the name of each lockspace will
-	appear as a file in the "dlm" directory.  The output is the
-	list of resource and locks the local node knows about.
+	  Under the debugfs mount point, the name of each lockspace will
+	  appear as a file in the "dlm" directory.  The output is the
+	  list of resource and locks the local node knows about.
 
 endmenu
diff --git a/fs/dlm/config.c b/fs/dlm/config.c
index 8855305..8665c88 100644
--- a/fs/dlm/config.c
+++ b/fs/dlm/config.c
@@ -54,6 +54,11 @@ static struct config_item *make_node(struct config_group *, const char *);
 static void drop_node(struct config_group *, struct config_item *);
 static void release_node(struct config_item *);
 
+static ssize_t show_cluster(struct config_item *i, struct configfs_attribute *a,
+			    char *buf);
+static ssize_t store_cluster(struct config_item *i,
+			     struct configfs_attribute *a,
+			     const char *buf, size_t len);
 static ssize_t show_comm(struct config_item *i, struct configfs_attribute *a,
 			 char *buf);
 static ssize_t store_comm(struct config_item *i, struct configfs_attribute *a,
@@ -73,6 +78,101 @@ static ssize_t node_nodeid_write(struct node *nd, const char *buf, size_t len);
 static ssize_t node_weight_read(struct node *nd, char *buf);
 static ssize_t node_weight_write(struct node *nd, const char *buf, size_t len);
 
+struct cluster {
+	struct config_group group;
+	unsigned int cl_tcp_port;
+	unsigned int cl_buffer_size;
+	unsigned int cl_rsbtbl_size;
+	unsigned int cl_lkbtbl_size;
+	unsigned int cl_dirtbl_size;
+	unsigned int cl_recover_timer;
+	unsigned int cl_toss_secs;
+	unsigned int cl_scan_secs;
+	unsigned int cl_log_debug;
+};
+
+enum {
+	CLUSTER_ATTR_TCP_PORT = 0,
+	CLUSTER_ATTR_BUFFER_SIZE,
+	CLUSTER_ATTR_RSBTBL_SIZE,
+	CLUSTER_ATTR_LKBTBL_SIZE,
+	CLUSTER_ATTR_DIRTBL_SIZE,
+	CLUSTER_ATTR_RECOVER_TIMER,
+	CLUSTER_ATTR_TOSS_SECS,
+	CLUSTER_ATTR_SCAN_SECS,
+	CLUSTER_ATTR_LOG_DEBUG,
+};
+
+struct cluster_attribute {
+	struct configfs_attribute attr;
+	ssize_t (*show)(struct cluster *, char *);
+	ssize_t (*store)(struct cluster *, const char *, size_t);
+};
+
+static ssize_t cluster_set(struct cluster *cl, unsigned int *cl_field,
+			   unsigned int *info_field, int check_zero,
+			   const char *buf, size_t len)
+{
+	unsigned int x;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EACCES;
+
+	x = simple_strtoul(buf, NULL, 0);
+
+	if (check_zero && !x)
+		return -EINVAL;
+
+	*cl_field = x;
+	*info_field = x;
+
+	return len;
+}
+
+#define __CONFIGFS_ATTR(_name,_mode,_read,_write) {                           \
+	.attr   = { .ca_name = __stringify(_name),                            \
+		    .ca_mode = _mode,                                         \
+		    .ca_owner = THIS_MODULE },                                \
+	.show   = _read,                                                      \
+	.store  = _write,                                                     \
+}
+
+#define CLUSTER_ATTR(name, check_zero)                                        \
+static ssize_t name##_write(struct cluster *cl, const char *buf, size_t len)  \
+{                                                                             \
+	return cluster_set(cl, &cl->cl_##name, &dlm_config.ci_##name,         \
+			   check_zero, buf, len);                             \
+}                                                                             \
+static ssize_t name##_read(struct cluster *cl, char *buf)                     \
+{                                                                             \
+	return snprintf(buf, PAGE_SIZE, "%u\n", cl->cl_##name);               \
+}                                                                             \
+static struct cluster_attribute cluster_attr_##name =                         \
+__CONFIGFS_ATTR(name, 0644, name##_read, name##_write)
+
+CLUSTER_ATTR(tcp_port, 1);
+CLUSTER_ATTR(buffer_size, 1);
+CLUSTER_ATTR(rsbtbl_size, 1);
+CLUSTER_ATTR(lkbtbl_size, 1);
+CLUSTER_ATTR(dirtbl_size, 1);
+CLUSTER_ATTR(recover_timer, 1);
+CLUSTER_ATTR(toss_secs, 1);
+CLUSTER_ATTR(scan_secs, 1);
+CLUSTER_ATTR(log_debug, 0);
+
+static struct configfs_attribute *cluster_attrs[] = {
+	[CLUSTER_ATTR_TCP_PORT] = &cluster_attr_tcp_port.attr,
+	[CLUSTER_ATTR_BUFFER_SIZE] = &cluster_attr_buffer_size.attr,
+	[CLUSTER_ATTR_RSBTBL_SIZE] = &cluster_attr_rsbtbl_size.attr,
+	[CLUSTER_ATTR_LKBTBL_SIZE] = &cluster_attr_lkbtbl_size.attr,
+	[CLUSTER_ATTR_DIRTBL_SIZE] = &cluster_attr_dirtbl_size.attr,
+	[CLUSTER_ATTR_RECOVER_TIMER] = &cluster_attr_recover_timer.attr,
+	[CLUSTER_ATTR_TOSS_SECS] = &cluster_attr_toss_secs.attr,
+	[CLUSTER_ATTR_SCAN_SECS] = &cluster_attr_scan_secs.attr,
+	[CLUSTER_ATTR_LOG_DEBUG] = &cluster_attr_log_debug.attr,
+	NULL,
+};
+
 enum {
 	COMM_ATTR_NODEID = 0,
 	COMM_ATTR_LOCAL,
@@ -152,10 +252,6 @@ struct clusters {
 	struct configfs_subsystem subsys;
 };
 
-struct cluster {
-	struct config_group group;
-};
-
 struct spaces {
 	struct config_group ss_group;
 };
@@ -197,6 +293,8 @@ static struct configfs_group_operations clusters_ops = {
 
 static struct configfs_item_operations cluster_ops = {
 	.release = release_cluster,
+	.show_attribute = show_cluster,
+	.store_attribute = store_cluster,
 };
 
 static struct configfs_group_operations spaces_ops = {
@@ -237,6 +335,7 @@ static struct config_item_type clusters_type = {
 
 static struct config_item_type cluster_type = {
 	.ct_item_ops = &cluster_ops,
+	.ct_attrs = cluster_attrs,
 	.ct_owner = THIS_MODULE,
 };
 
@@ -317,6 +416,16 @@ static struct config_group *make_cluster(struct config_group *g,
 	cl->group.default_groups[1] = &cms->cs_group;
 	cl->group.default_groups[2] = NULL;
 
+	cl->cl_tcp_port = dlm_config.ci_tcp_port;
+	cl->cl_buffer_size = dlm_config.ci_buffer_size;
+	cl->cl_rsbtbl_size = dlm_config.ci_rsbtbl_size;
+	cl->cl_lkbtbl_size = dlm_config.ci_lkbtbl_size;
+	cl->cl_dirtbl_size = dlm_config.ci_dirtbl_size;
+	cl->cl_recover_timer = dlm_config.ci_recover_timer;
+	cl->cl_toss_secs = dlm_config.ci_toss_secs;
+	cl->cl_scan_secs = dlm_config.ci_scan_secs;
+	cl->cl_log_debug = dlm_config.ci_log_debug;
+
 	space_list = &sps->ss_group;
 	comm_list = &cms->cs_group;
 	return &cl->group;
@@ -509,6 +618,25 @@ void dlm_config_exit(void)
  * Functions for user space to read/write attributes
  */
 
+static ssize_t show_cluster(struct config_item *i, struct configfs_attribute *a,
+			    char *buf)
+{
+	struct cluster *cl = to_cluster(i);
+	struct cluster_attribute *cla =
+			container_of(a, struct cluster_attribute, attr);
+	return cla->show ? cla->show(cl, buf) : 0;
+}
+
+static ssize_t store_cluster(struct config_item *i,
+			     struct configfs_attribute *a,
+			     const char *buf, size_t len)
+{
+	struct cluster *cl = to_cluster(i);
+	struct cluster_attribute *cla =
+		container_of(a, struct cluster_attribute, attr);
+	return cla->store ? cla->store(cl, buf, len) : -EINVAL;
+}
+
 static ssize_t show_comm(struct config_item *i, struct configfs_attribute *a,
 			 char *buf)
 {
@@ -775,15 +903,17 @@ int dlm_our_addr(struct sockaddr_storage *addr, int num)
 #define DEFAULT_RECOVER_TIMER      5
 #define DEFAULT_TOSS_SECS         10
 #define DEFAULT_SCAN_SECS          5
+#define DEFAULT_LOG_DEBUG          0
 
 struct dlm_config_info dlm_config = {
-	.tcp_port = DEFAULT_TCP_PORT,
-	.buffer_size = DEFAULT_BUFFER_SIZE,
-	.rsbtbl_size = DEFAULT_RSBTBL_SIZE,
-	.lkbtbl_size = DEFAULT_LKBTBL_SIZE,
-	.dirtbl_size = DEFAULT_DIRTBL_SIZE,
-	.recover_timer = DEFAULT_RECOVER_TIMER,
-	.toss_secs = DEFAULT_TOSS_SECS,
-	.scan_secs = DEFAULT_SCAN_SECS
+	.ci_tcp_port = DEFAULT_TCP_PORT,
+	.ci_buffer_size = DEFAULT_BUFFER_SIZE,
+	.ci_rsbtbl_size = DEFAULT_RSBTBL_SIZE,
+	.ci_lkbtbl_size = DEFAULT_LKBTBL_SIZE,
+	.ci_dirtbl_size = DEFAULT_DIRTBL_SIZE,
+	.ci_recover_timer = DEFAULT_RECOVER_TIMER,
+	.ci_toss_secs = DEFAULT_TOSS_SECS,
+	.ci_scan_secs = DEFAULT_SCAN_SECS,
+	.ci_log_debug = DEFAULT_LOG_DEBUG
 };
 
diff --git a/fs/dlm/config.h b/fs/dlm/config.h
index 9da7839..1e97861 100644
--- a/fs/dlm/config.h
+++ b/fs/dlm/config.h
@@ -17,14 +17,15 @@
 #define DLM_MAX_ADDR_COUNT 3
 
 struct dlm_config_info {
-	int tcp_port;
-	int buffer_size;
-	int rsbtbl_size;
-	int lkbtbl_size;
-	int dirtbl_size;
-	int recover_timer;
-	int toss_secs;
-	int scan_secs;
+	int ci_tcp_port;
+	int ci_buffer_size;
+	int ci_rsbtbl_size;
+	int ci_lkbtbl_size;
+	int ci_dirtbl_size;
+	int ci_recover_timer;
+	int ci_toss_secs;
+	int ci_scan_secs;
+	int ci_log_debug;
 };
 
 extern struct dlm_config_info dlm_config;
diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c
index ca94a83..61ba670 100644
--- a/fs/dlm/debug_fs.c
+++ b/fs/dlm/debug_fs.c
@@ -287,7 +287,7 @@ static int rsb_open(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static struct file_operations rsb_fops = {
+static const struct file_operations rsb_fops = {
 	.owner   = THIS_MODULE,
 	.open    = rsb_open,
 	.read    = seq_read,
@@ -331,7 +331,7 @@ static ssize_t waiters_read(struct file *file, char __user *userbuf,
 	return rv;
 }
 
-static struct file_operations waiters_fops = {
+static const struct file_operations waiters_fops = {
 	.owner   = THIS_MODULE,
 	.open    = waiters_open,
 	.read    = waiters_read
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index 1ee8195..61d9320 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -41,6 +41,7 @@
 #include <asm/uaccess.h>
 
 #include <linux/dlm.h>
+#include "config.h"
 
 #define DLM_LOCKSPACE_LEN	64
 
@@ -69,12 +70,12 @@ struct dlm_mhandle;
 #define log_error(ls, fmt, args...) \
 	printk(KERN_ERR "dlm: %s: " fmt "\n", (ls)->ls_name , ##args)
 
-#define DLM_LOG_DEBUG
-#ifdef DLM_LOG_DEBUG
-#define log_debug(ls, fmt, args...) log_error(ls, fmt, ##args)
-#else
-#define log_debug(ls, fmt, args...)
-#endif
+#define log_debug(ls, fmt, args...) \
+do { \
+	if (dlm_config.ci_log_debug) \
+		printk(KERN_DEBUG "dlm: %s: " fmt "\n", \
+		       (ls)->ls_name , ##args); \
+} while (0)
 
 #define DLM_ASSERT(x, do) \
 { \
@@ -309,8 +310,8 @@ static inline int rsb_flag(struct dlm_rsb *r, enum rsb_flags flag)
 
 /* dlm_header is first element of all structs sent between nodes */
 
-#define DLM_HEADER_MAJOR	0x00020000
-#define DLM_HEADER_MINOR	0x00000001
+#define DLM_HEADER_MAJOR	0x00030000
+#define DLM_HEADER_MINOR	0x00000000
 
 #define DLM_MSG			1
 #define DLM_RCOM		2
@@ -386,6 +387,8 @@ struct dlm_rcom {
 	uint32_t		rc_type;	/* DLM_RCOM_ */
 	int			rc_result;	/* multi-purpose */
 	uint64_t		rc_id;		/* match reply with request */
+	uint64_t		rc_seq;		/* sender's ls_recover_seq */
+	uint64_t		rc_seq_reply;	/* remote ls_recover_seq */
 	char			rc_buf[0];
 };
 
@@ -523,6 +526,7 @@ struct dlm_user_proc {
 	spinlock_t		asts_spin;
 	struct list_head	locks;
 	spinlock_t		locks_spin;
+	struct list_head	unlocking;
 	wait_queue_head_t	wait;
 };
 
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 30878de..e725005 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -754,6 +754,11 @@ static void add_to_waiters(struct dlm_lkb *lkb, int mstype)
 	mutex_unlock(&ls->ls_waiters_mutex);
 }
 
+/* We clear the RESEND flag because we might be taking an lkb off the waiters
+   list as part of process_requestqueue (e.g. a lookup that has an optimized
+   request reply on the requestqueue) between dlm_recover_waiters_pre() which
+   set RESEND and dlm_recover_waiters_post() */
+
 static int _remove_from_waiters(struct dlm_lkb *lkb)
 {
 	int error = 0;
@@ -764,6 +769,7 @@ static int _remove_from_waiters(struct dlm_lkb *lkb)
 		goto out;
 	}
 	lkb->lkb_wait_type = 0;
+	lkb->lkb_flags &= ~DLM_IFL_RESEND;
 	list_del(&lkb->lkb_wait_reply);
 	unhold_lkb(lkb);
  out:
@@ -810,7 +816,7 @@ static int shrink_bucket(struct dlm_ls *ls, int b)
 		list_for_each_entry_reverse(r, &ls->ls_rsbtbl[b].toss,
 					    res_hashchain) {
 			if (!time_after_eq(jiffies, r->res_toss_time +
-					   dlm_config.toss_secs * HZ))
+					   dlm_config.ci_toss_secs * HZ))
 				continue;
 			found = 1;
 			break;
@@ -2144,12 +2150,24 @@ static void send_args(struct dlm_rsb *r, struct dlm_lkb *lkb,
 	if (lkb->lkb_astaddr)
 		ms->m_asts |= AST_COMP;
 
-	if (ms->m_type == DLM_MSG_REQUEST || ms->m_type == DLM_MSG_LOOKUP)
-		memcpy(ms->m_extra, r->res_name, r->res_length);
+	/* compare with switch in create_message; send_remove() doesn't
+	   use send_args() */
 
-	else if (lkb->lkb_lvbptr)
+	switch (ms->m_type) {
+	case DLM_MSG_REQUEST:
+	case DLM_MSG_LOOKUP:
+		memcpy(ms->m_extra, r->res_name, r->res_length);
+		break;
+	case DLM_MSG_CONVERT:
+	case DLM_MSG_UNLOCK:
+	case DLM_MSG_REQUEST_REPLY:
+	case DLM_MSG_CONVERT_REPLY:
+	case DLM_MSG_GRANT:
+		if (!lkb->lkb_lvbptr)
+			break;
 		memcpy(ms->m_extra, lkb->lkb_lvbptr, r->res_ls->ls_lvblen);
-
+		break;
+	}
 }
 
 static int send_common(struct dlm_rsb *r, struct dlm_lkb *lkb, int mstype)
@@ -2418,8 +2436,12 @@ static int receive_request_args(struct dlm_ls *ls, struct dlm_lkb *lkb,
 
 	DLM_ASSERT(is_master_copy(lkb), dlm_print_lkb(lkb););
 
-	if (receive_lvb(ls, lkb, ms))
-		return -ENOMEM;
+	if (lkb->lkb_exflags & DLM_LKF_VALBLK) {
+		/* lkb was just created so there won't be an lvb yet */
+		lkb->lkb_lvbptr = allocate_lvb(ls);
+		if (!lkb->lkb_lvbptr)
+			return -ENOMEM;
+	}
 
 	return 0;
 }
@@ -3002,7 +3024,7 @@ int dlm_receive_message(struct dlm_header *hd, int nodeid, int recovery)
 {
 	struct dlm_message *ms = (struct dlm_message *) hd;
 	struct dlm_ls *ls;
-	int error;
+	int error = 0;
 
 	if (!recovery)
 		dlm_message_in(ms);
@@ -3119,7 +3141,7 @@ int dlm_receive_message(struct dlm_header *hd, int nodeid, int recovery)
  out:
 	dlm_put_lockspace(ls);
 	dlm_astd_wake();
-	return 0;
+	return error;
 }
 
 
@@ -3132,6 +3154,7 @@ static void recover_convert_waiter(struct dlm_ls *ls, struct dlm_lkb *lkb)
 	if (middle_conversion(lkb)) {
 		hold_lkb(lkb);
 		ls->ls_stub_ms.m_result = -EINPROGRESS;
+		ls->ls_stub_ms.m_flags = lkb->lkb_flags;
 		_remove_from_waiters(lkb);
 		_receive_convert_reply(lkb, &ls->ls_stub_ms);
 
@@ -3205,6 +3228,7 @@ void dlm_recover_waiters_pre(struct dlm_ls *ls)
 		case DLM_MSG_UNLOCK:
 			hold_lkb(lkb);
 			ls->ls_stub_ms.m_result = -DLM_EUNLOCK;
+			ls->ls_stub_ms.m_flags = lkb->lkb_flags;
 			_remove_from_waiters(lkb);
 			_receive_unlock_reply(lkb, &ls->ls_stub_ms);
 			dlm_put_lkb(lkb);
@@ -3213,6 +3237,7 @@ void dlm_recover_waiters_pre(struct dlm_ls *ls)
 		case DLM_MSG_CANCEL:
 			hold_lkb(lkb);
 			ls->ls_stub_ms.m_result = -DLM_ECANCEL;
+			ls->ls_stub_ms.m_flags = lkb->lkb_flags;
 			_remove_from_waiters(lkb);
 			_receive_cancel_reply(lkb, &ls->ls_stub_ms);
 			dlm_put_lkb(lkb);
@@ -3571,6 +3596,14 @@ int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc)
 	lock_rsb(r);
 
 	switch (error) {
+	case -EBADR:
+		/* There's a chance the new master received our lock before
+		   dlm_recover_master_reply(), this wouldn't happen if we did
+		   a barrier between recover_masters and recover_locks. */
+		log_debug(ls, "master copy not ready %x r %lx %s", lkb->lkb_id,
+			  (unsigned long)r, r->res_name);
+		dlm_send_rcom_lock(r, lkb);
+		goto out;
 	case -EEXIST:
 		log_debug(ls, "master copy exists %x", lkb->lkb_id);
 		/* fall through */
@@ -3585,7 +3618,7 @@ int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc)
 	/* an ack for dlm_recover_locks() which waits for replies from
 	   all the locks it sends to new masters */
 	dlm_recovered_lock(r);
-
+ out:
 	unlock_rsb(r);
 	put_rsb(r);
 	dlm_put_lkb(lkb);
@@ -3610,7 +3643,7 @@ int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua,
 	}
 
 	if (flags & DLM_LKF_VALBLK) {
-		ua->lksb.sb_lvbptr = kmalloc(DLM_USER_LVB_LEN, GFP_KERNEL);
+		ua->lksb.sb_lvbptr = kzalloc(DLM_USER_LVB_LEN, GFP_KERNEL);
 		if (!ua->lksb.sb_lvbptr) {
 			kfree(ua);
 			__put_lkb(ls, lkb);
@@ -3679,7 +3712,7 @@ int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
 	ua = (struct dlm_user_args *)lkb->lkb_astparam;
 
 	if (flags & DLM_LKF_VALBLK && !ua->lksb.sb_lvbptr) {
-		ua->lksb.sb_lvbptr = kmalloc(DLM_USER_LVB_LEN, GFP_KERNEL);
+		ua->lksb.sb_lvbptr = kzalloc(DLM_USER_LVB_LEN, GFP_KERNEL);
 		if (!ua->lksb.sb_lvbptr) {
 			error = -ENOMEM;
 			goto out_put;
@@ -3745,12 +3778,10 @@ int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
 		goto out_put;
 
 	spin_lock(&ua->proc->locks_spin);
-	list_del_init(&lkb->lkb_ownqueue);
+	/* dlm_user_add_ast() may have already taken lkb off the proc list */
+	if (!list_empty(&lkb->lkb_ownqueue))
+		list_move(&lkb->lkb_ownqueue, &ua->proc->unlocking);
 	spin_unlock(&ua->proc->locks_spin);
-
-	/* this removes the reference for the proc->locks list added by
-	   dlm_user_request */
-	unhold_lkb(lkb);
  out_put:
 	dlm_put_lkb(lkb);
  out:
@@ -3790,9 +3821,8 @@ int dlm_user_cancel(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
 	/* this lkb was removed from the WAITING queue */
 	if (lkb->lkb_grmode == DLM_LOCK_IV) {
 		spin_lock(&ua->proc->locks_spin);
-		list_del_init(&lkb->lkb_ownqueue);
+		list_move(&lkb->lkb_ownqueue, &ua->proc->unlocking);
 		spin_unlock(&ua->proc->locks_spin);
-		unhold_lkb(lkb);
 	}
  out_put:
 	dlm_put_lkb(lkb);
@@ -3853,11 +3883,6 @@ void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc)
 	mutex_lock(&ls->ls_clear_proc_locks);
 
 	list_for_each_entry_safe(lkb, safe, &proc->locks, lkb_ownqueue) {
-		if (lkb->lkb_ast_type) {
-			list_del(&lkb->lkb_astqueue);
-			unhold_lkb(lkb);
-		}
-
 		list_del_init(&lkb->lkb_ownqueue);
 
 		if (lkb->lkb_exflags & DLM_LKF_PERSISTENT) {
@@ -3874,6 +3899,20 @@ void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc)
 
 		dlm_put_lkb(lkb);
 	}
+
+	/* in-progress unlocks */
+	list_for_each_entry_safe(lkb, safe, &proc->unlocking, lkb_ownqueue) {
+		list_del_init(&lkb->lkb_ownqueue);
+		lkb->lkb_flags |= DLM_IFL_DEAD;
+		dlm_put_lkb(lkb);
+	}
+
+	list_for_each_entry_safe(lkb, safe, &proc->asts, lkb_astqueue) {
+		list_del(&lkb->lkb_astqueue);
+		dlm_put_lkb(lkb);
+	}
+
 	mutex_unlock(&ls->ls_clear_proc_locks);
 	unlock_recovery(ls);
 }
+
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index 59012b0..f40817b 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -236,7 +236,7 @@ static int dlm_scand(void *data)
 	while (!kthread_should_stop()) {
 		list_for_each_entry(ls, &lslist, ls_list)
 			dlm_scan_rsbs(ls);
-		schedule_timeout_interruptible(dlm_config.scan_secs * HZ);
+		schedule_timeout_interruptible(dlm_config.ci_scan_secs * HZ);
 	}
 	return 0;
 }
@@ -422,7 +422,7 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
 	ls->ls_count = 0;
 	ls->ls_flags = 0;
 
-	size = dlm_config.rsbtbl_size;
+	size = dlm_config.ci_rsbtbl_size;
 	ls->ls_rsbtbl_size = size;
 
 	ls->ls_rsbtbl = kmalloc(sizeof(struct dlm_rsbtable) * size, GFP_KERNEL);
@@ -434,7 +434,7 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
 		rwlock_init(&ls->ls_rsbtbl[i].lock);
 	}
 
-	size = dlm_config.lkbtbl_size;
+	size = dlm_config.ci_lkbtbl_size;
 	ls->ls_lkbtbl_size = size;
 
 	ls->ls_lkbtbl = kmalloc(sizeof(struct dlm_lkbtable) * size, GFP_KERNEL);
@@ -446,7 +446,7 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
 		ls->ls_lkbtbl[i].counter = 1;
 	}
 
-	size = dlm_config.dirtbl_size;
+	size = dlm_config.ci_dirtbl_size;
 	ls->ls_dirtbl_size = size;
 
 	ls->ls_dirtbl = kmalloc(sizeof(struct dlm_dirtable) * size, GFP_KERNEL);
@@ -489,7 +489,7 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
 	mutex_init(&ls->ls_requestqueue_mutex);
 	mutex_init(&ls->ls_clear_proc_locks);
 
-	ls->ls_recover_buf = kmalloc(dlm_config.buffer_size, GFP_KERNEL);
+	ls->ls_recover_buf = kmalloc(dlm_config.ci_buffer_size, GFP_KERNEL);
 	if (!ls->ls_recover_buf)
 		goto out_dirfree;
 
diff --git a/fs/dlm/lowcomms-sctp.c b/fs/dlm/lowcomms-sctp.c
index fe158d7..dc83a9d 100644
--- a/fs/dlm/lowcomms-sctp.c
+++ b/fs/dlm/lowcomms-sctp.c
@@ -72,6 +72,8 @@ struct nodeinfo {
 	struct list_head	writequeue; /* outgoing writequeue_entries */
 	spinlock_t		writequeue_lock;
 	int			nodeid;
+	struct work_struct      swork; /* Send workqueue */
+	struct work_struct      lwork; /* Locking workqueue */
 };
 
 static DEFINE_IDR(nodeinfo_idr);
@@ -96,6 +98,7 @@ struct connection {
 	atomic_t		waiting_requests;
 	struct cbuf		cb;
 	int                     eagain_flag;
+	struct work_struct      work; /* Send workqueue */
 };
 
 /* An entry waiting to be sent */
@@ -137,19 +140,23 @@ static void cbuf_eat(struct cbuf *cb, int n)
 static LIST_HEAD(write_nodes);
 static DEFINE_SPINLOCK(write_nodes_lock);
 
+
 /* Maximum number of incoming messages to process before
  * doing a schedule()
  */
 #define MAX_RX_MSG_COUNT 25
 
-/* Manage daemons */
-static struct task_struct *recv_task;
-static struct task_struct *send_task;
-static DECLARE_WAIT_QUEUE_HEAD(lowcomms_recv_wait);
+/* Work queues */
+static struct workqueue_struct *recv_workqueue;
+static struct workqueue_struct *send_workqueue;
+static struct workqueue_struct *lock_workqueue;
 
 /* The SCTP connection */
 static struct connection sctp_con;
 
+static void process_send_sockets(struct work_struct *work);
+static void process_recv_sockets(struct work_struct *work);
+static void process_lock_request(struct work_struct *work);
 
 static int nodeid_to_addr(int nodeid, struct sockaddr *retaddr)
 {
@@ -222,6 +229,8 @@ static struct nodeinfo *nodeid2nodeinfo(int nodeid, gfp_t alloc)
 	spin_lock_init(&ni->lock);
 	INIT_LIST_HEAD(&ni->writequeue);
 	spin_lock_init(&ni->writequeue_lock);
+	INIT_WORK(&ni->lwork, process_lock_request);
+	INIT_WORK(&ni->swork, process_send_sockets);
 	ni->nodeid = nodeid;
 
 	if (nodeid > max_nodeid)
@@ -249,11 +258,8 @@ static struct nodeinfo *assoc2nodeinfo(sctp_assoc_t assoc)
 /* Data or notification available on socket */
 static void lowcomms_data_ready(struct sock *sk, int count_unused)
 {
-	atomic_inc(&sctp_con.waiting_requests);
 	if (test_and_set_bit(CF_READ_PENDING, &sctp_con.flags))
-		return;
-
-	wake_up_interruptible(&lowcomms_recv_wait);
+		queue_work(recv_workqueue, &sctp_con.work);
 }
 
 
@@ -361,10 +367,10 @@ static void init_failed(void)
 				spin_lock_bh(&write_nodes_lock);
 				list_add_tail(&ni->write_list, &write_nodes);
 				spin_unlock_bh(&write_nodes_lock);
+				queue_work(send_workqueue, &ni->swork);
 			}
 		}
 	}
-	wake_up_process(send_task);
 }
 
 /* Something happened to an association */
@@ -446,8 +452,8 @@ static void process_sctp_notification(struct msghdr *msg, char *buf)
 				spin_lock_bh(&write_nodes_lock);
 				list_add_tail(&ni->write_list, &write_nodes);
 				spin_unlock_bh(&write_nodes_lock);
+				queue_work(send_workqueue, &ni->swork);
 			}
-			wake_up_process(send_task);
 		}
 		break;
 
@@ -580,8 +586,8 @@ static int receive_from_sock(void)
 				spin_lock_bh(&write_nodes_lock);
 				list_add_tail(&ni->write_list, &write_nodes);
 				spin_unlock_bh(&write_nodes_lock);
+				queue_work(send_workqueue, &ni->swork);
 			}
-			wake_up_process(send_task);
 		}
 	}
 
@@ -590,6 +596,7 @@ static int receive_from_sock(void)
 		return 0;
 
 	cbuf_add(&sctp_con.cb, ret);
+	// PJC: TODO: Add to node's workqueue....can we ??
 	ret = dlm_process_incoming_buffer(cpu_to_le32(sinfo->sinfo_ppid),
 					  page_address(sctp_con.rx_page),
 					  sctp_con.cb.base, sctp_con.cb.len,
@@ -635,7 +642,7 @@ static int add_bind_addr(struct sockaddr_storage *addr, int addr_len, int num)
 
 	if (result < 0)
 		log_print("Can't bind to port %d addr number %d",
-			  dlm_config.tcp_port, num);
+			  dlm_config.ci_tcp_port, num);
 
 	return result;
 }
@@ -711,7 +718,7 @@ static int init_sock(void)
 	/* Bind to all interfaces. */
 	for (i = 0; i < dlm_local_count; i++) {
 		memcpy(&localaddr, dlm_local_addr[i], sizeof(localaddr));
-		make_sockaddr(&localaddr, dlm_config.tcp_port, &addr_len);
+		make_sockaddr(&localaddr, dlm_config.ci_tcp_port, &addr_len);
 
 		result = add_bind_addr(&localaddr, addr_len, num);
 		if (result)
@@ -820,7 +827,8 @@ void dlm_lowcomms_commit_buffer(void *arg)
 		spin_lock_bh(&write_nodes_lock);
 		list_add_tail(&ni->write_list, &write_nodes);
 		spin_unlock_bh(&write_nodes_lock);
-		wake_up_process(send_task);
+
+		queue_work(send_workqueue, &ni->swork);
 	}
 	return;
 
@@ -863,7 +871,7 @@ static void initiate_association(int nodeid)
 		return;
 	}
 
-	make_sockaddr(&rem_addr, dlm_config.tcp_port, &addrlen);
+	make_sockaddr(&rem_addr, dlm_config.ci_tcp_port, &addrlen);
 
 	outmessage.msg_name = &rem_addr;
 	outmessage.msg_namelen = addrlen;
@@ -1088,101 +1096,75 @@ int dlm_lowcomms_close(int nodeid)
 	return 0;
 }
 
-static int write_list_empty(void)
+// PJC: The work queue function for receiving.
+static void process_recv_sockets(struct work_struct *work)
 {
-	int status;
-
-	spin_lock_bh(&write_nodes_lock);
-	status = list_empty(&write_nodes);
-	spin_unlock_bh(&write_nodes_lock);
-
-	return status;
-}
-
-static int dlm_recvd(void *data)
-{
-	DECLARE_WAITQUEUE(wait, current);
-
-	while (!kthread_should_stop()) {
+	if (test_and_clear_bit(CF_READ_PENDING, &sctp_con.flags)) {
+		int ret;
 		int count = 0;
 
-		set_current_state(TASK_INTERRUPTIBLE);
-		add_wait_queue(&lowcomms_recv_wait, &wait);
-		if (!test_bit(CF_READ_PENDING, &sctp_con.flags))
-			cond_resched();
-		remove_wait_queue(&lowcomms_recv_wait, &wait);
-		set_current_state(TASK_RUNNING);
-
-		if (test_and_clear_bit(CF_READ_PENDING, &sctp_con.flags)) {
-			int ret;
-
-			do {
-				ret = receive_from_sock();
+		do {
+			ret = receive_from_sock();
 
-				/* Don't starve out everyone else */
-				if (++count >= MAX_RX_MSG_COUNT) {
-					cond_resched();
-					count = 0;
-				}
-			} while (!kthread_should_stop() && ret >=0);
-		}
-		cond_resched();
+			/* Don't starve out everyone else */
+			if (++count >= MAX_RX_MSG_COUNT) {
+				cond_resched();
+				count = 0;
+			}
+		} while (!kthread_should_stop() && ret >=0);
 	}
-
-	return 0;
+	cond_resched();
 }
 
-static int dlm_sendd(void *data)
+// PJC: the work queue function for sending
+static void process_send_sockets(struct work_struct *work)
 {
-	DECLARE_WAITQUEUE(wait, current);
-
-	add_wait_queue(sctp_con.sock->sk->sk_sleep, &wait);
-
-	while (!kthread_should_stop()) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		if (write_list_empty())
-			cond_resched();
-		set_current_state(TASK_RUNNING);
-
-		if (sctp_con.eagain_flag) {
-			sctp_con.eagain_flag = 0;
-			refill_write_queue();
-		}
-		process_output_queue();
+	if (sctp_con.eagain_flag) {
+		sctp_con.eagain_flag = 0;
+		refill_write_queue();
 	}
+	process_output_queue();
+}
 
-	remove_wait_queue(sctp_con.sock->sk->sk_sleep, &wait);
-
-	return 0;
+// PJC: Process lock requests from a particular node.
+// TODO: can we optimise this out on UP ??
+static void process_lock_request(struct work_struct *work)
+{
 }
 
 static void daemons_stop(void)
 {
-	kthread_stop(recv_task);
-	kthread_stop(send_task);
+	destroy_workqueue(recv_workqueue);
+	destroy_workqueue(send_workqueue);
+	destroy_workqueue(lock_workqueue);
 }
 
 static int daemons_start(void)
 {
-	struct task_struct *p;
 	int error;
+	recv_workqueue = create_workqueue("dlm_recv");
+	error = IS_ERR(recv_workqueue);
+	if (error) {
+		log_print("can't start dlm_recv %d", error);
+		return error;
+	}
 
-	p = kthread_run(dlm_recvd, NULL, "dlm_recvd");
-	error = IS_ERR(p);
+	send_workqueue = create_singlethread_workqueue("dlm_send");
+	error = IS_ERR(send_workqueue);
 	if (error) {
-		log_print("can't start dlm_recvd %d", error);
+		log_print("can't start dlm_send %d", error);
+		destroy_workqueue(recv_workqueue);
 		return error;
 	}
-	recv_task = p;
 
-	p = kthread_run(dlm_sendd, NULL, "dlm_sendd");
-	error = IS_ERR(p);
+	lock_workqueue = create_workqueue("dlm_rlock");
+	error = IS_ERR(lock_workqueue);
 	if (error) {
-		log_print("can't start dlm_sendd %d", error);
-		kthread_stop(recv_task);
+		log_print("can't start dlm_rlock %d", error);
+		destroy_workqueue(send_workqueue);
+		destroy_workqueue(recv_workqueue);
 		return error;
 	}
-	send_task = p;
 
 	return 0;
 }
@@ -1194,6 +1176,8 @@ int dlm_lowcomms_start(void)
 {
 	int error;
 
+	INIT_WORK(&sctp_con.work, process_recv_sockets);
+
 	error = init_sock();
 	if (error)
 		goto fail_sock;
@@ -1224,4 +1208,3 @@ void dlm_lowcomms_stop(void)
 	for (i = 0; i < dlm_local_count; i++)
 		kfree(dlm_local_addr[i]);
 }
-
diff --git a/fs/dlm/lowcomms-tcp.c b/fs/dlm/lowcomms-tcp.c
index 9be3a44..07e0a12 100644
--- a/fs/dlm/lowcomms-tcp.c
+++ b/fs/dlm/lowcomms-tcp.c
@@ -2,7 +2,7 @@
 *******************************************************************************
 **
 **  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
-**  Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
+**  Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
 **
 **  This copyrighted material is made available to anyone wishing to use,
 **  modify, copy, or redistribute it subject to the terms and conditions
@@ -96,10 +96,7 @@ static bool cbuf_empty(struct cbuf *cb)
 struct connection {
 	struct socket *sock;	/* NULL if not connected */
 	uint32_t nodeid;	/* So we know who we are in the list */
-	struct rw_semaphore sock_sem; /* Stop connect races */
-	struct list_head read_list;   /* On this list when ready for reading */
-	struct list_head write_list;  /* On this list when ready for writing */
-	struct list_head state_list;  /* On this list when ready to connect */
+	struct mutex sock_mutex;
 	unsigned long flags;	/* bit 1,2 = We are on the read/write lists */
 #define CF_READ_PENDING 1
 #define CF_WRITE_PENDING 2
@@ -112,9 +109,10 @@ struct connection {
 	struct page *rx_page;
 	struct cbuf cb;
 	int retries;
-	atomic_t waiting_requests;
 #define MAX_CONNECT_RETRIES 3
 	struct connection *othercon;
+	struct work_struct rwork; /* Receive workqueue */
+	struct work_struct swork; /* Send workqueue */
 };
 #define sock2con(x) ((struct connection *)(x)->sk_user_data)
 
@@ -131,14 +129,9 @@ struct writequeue_entry {
 
 static struct sockaddr_storage dlm_local_addr;
 
-/* Manage daemons */
-static struct task_struct *recv_task;
-static struct task_struct *send_task;
-
-static wait_queue_t lowcomms_send_waitq_head;
-static DECLARE_WAIT_QUEUE_HEAD(lowcomms_send_waitq);
-static wait_queue_t lowcomms_recv_waitq_head;
-static DECLARE_WAIT_QUEUE_HEAD(lowcomms_recv_waitq);
+/* Work queues */
+static struct workqueue_struct *recv_workqueue;
+static struct workqueue_struct *send_workqueue;
 
 /* An array of pointers to connections, indexed by NODEID */
 static struct connection **connections;
@@ -146,17 +139,8 @@ static DECLARE_MUTEX(connections_lock);
 static struct kmem_cache *con_cache;
 static int conn_array_size;
 
-/* List of sockets that have reads pending */
-static LIST_HEAD(read_sockets);
-static DEFINE_SPINLOCK(read_sockets_lock);
-
-/* List of sockets which have writes pending */
-static LIST_HEAD(write_sockets);
-static DEFINE_SPINLOCK(write_sockets_lock);
-
-/* List of sockets which have connects pending */
-static LIST_HEAD(state_sockets);
-static DEFINE_SPINLOCK(state_sockets_lock);
+static void process_recv_sockets(struct work_struct *work);
+static void process_send_sockets(struct work_struct *work);
 
 static struct connection *nodeid2con(int nodeid, gfp_t allocation)
 {
@@ -186,9 +170,11 @@ static struct connection *nodeid2con(int nodeid, gfp_t allocation)
 			goto finish;
 
 		con->nodeid = nodeid;
-		init_rwsem(&con->sock_sem);
+		mutex_init(&con->sock_mutex);
 		INIT_LIST_HEAD(&con->writequeue);
 		spin_lock_init(&con->writequeue_lock);
+		INIT_WORK(&con->swork, process_send_sockets);
+		INIT_WORK(&con->rwork, process_recv_sockets);
 
 		connections[nodeid] = con;
 	}
@@ -203,41 +189,22 @@ static void lowcomms_data_ready(struct sock *sk, int count_unused)
 {
 	struct connection *con = sock2con(sk);
 
-	atomic_inc(&con->waiting_requests);
-	if (test_and_set_bit(CF_READ_PENDING, &con->flags))
-		return;
-
-	spin_lock_bh(&read_sockets_lock);
-	list_add_tail(&con->read_list, &read_sockets);
-	spin_unlock_bh(&read_sockets_lock);
-
-	wake_up_interruptible(&lowcomms_recv_waitq);
+	if (!test_and_set_bit(CF_READ_PENDING, &con->flags))
+		queue_work(recv_workqueue, &con->rwork);
 }
 
 static void lowcomms_write_space(struct sock *sk)
 {
 	struct connection *con = sock2con(sk);
 
-	if (test_and_set_bit(CF_WRITE_PENDING, &con->flags))
-		return;
-
-	spin_lock_bh(&write_sockets_lock);
-	list_add_tail(&con->write_list, &write_sockets);
-	spin_unlock_bh(&write_sockets_lock);
-
-	wake_up_interruptible(&lowcomms_send_waitq);
+	if (!test_and_set_bit(CF_WRITE_PENDING, &con->flags))
+		queue_work(send_workqueue, &con->swork);
 }
 
 static inline void lowcomms_connect_sock(struct connection *con)
 {
-	if (test_and_set_bit(CF_CONNECT_PENDING, &con->flags))
-		return;
-
-	spin_lock_bh(&state_sockets_lock);
-	list_add_tail(&con->state_list, &state_sockets);
-	spin_unlock_bh(&state_sockets_lock);
-
-	wake_up_interruptible(&lowcomms_send_waitq);
+	if (!test_and_set_bit(CF_CONNECT_PENDING, &con->flags))
+		queue_work(send_workqueue, &con->swork);
 }
 
 static void lowcomms_state_change(struct sock *sk)
@@ -279,7 +246,7 @@ static void make_sockaddr(struct sockaddr_storage *saddr, uint16_t port,
 /* Close a remote connection and tidy up */
 static void close_connection(struct connection *con, bool and_other)
 {
-	down_write(&con->sock_sem);
+	mutex_lock(&con->sock_mutex);
 
 	if (con->sock) {
 		sock_release(con->sock);
@@ -294,24 +261,27 @@ static void close_connection(struct connection *con, bool and_other)
 		con->rx_page = NULL;
 	}
 	con->retries = 0;
-	up_write(&con->sock_sem);
+	mutex_unlock(&con->sock_mutex);
 }
 
 /* Data received from remote end */
 static int receive_from_sock(struct connection *con)
 {
 	int ret = 0;
-	struct msghdr msg;
-	struct iovec iov[2];
-	mm_segment_t fs;
+	struct msghdr msg = {};
+	struct kvec iov[2];
 	unsigned len;
 	int r;
 	int call_again_soon = 0;
+	int nvec;
 
-	down_read(&con->sock_sem);
+	mutex_lock(&con->sock_mutex);
+
+	if (con->sock == NULL) {
+		ret = -EAGAIN;
+		goto out_close;
+	}
 
-	if (con->sock == NULL)
-		goto out;
 	if (con->rx_page == NULL) {
 		/*
 		 * This doesn't need to be atomic, but I think it should
@@ -323,21 +293,13 @@ static int receive_from_sock(struct connection *con)
 		cbuf_init(&con->cb, PAGE_CACHE_SIZE);
 	}
 
-	msg.msg_control = NULL;
-	msg.msg_controllen = 0;
-	msg.msg_iovlen = 1;
-	msg.msg_iov = iov;
-	msg.msg_name = NULL;
-	msg.msg_namelen = 0;
-	msg.msg_flags = 0;
-
 	/*
 	 * iov[0] is the bit of the circular buffer between the current end
 	 * point (cb.base + cb.len) and the end of the buffer.
 	 */
 	iov[0].iov_len = con->cb.base - cbuf_data(&con->cb);
 	iov[0].iov_base = page_address(con->rx_page) + cbuf_data(&con->cb);
-	iov[1].iov_len = 0;
+	nvec = 1;
 
 	/*
 	 * iov[1] is the bit of the circular buffer between the start of the
@@ -347,18 +309,18 @@ static int receive_from_sock(struct connection *con)
 		iov[0].iov_len = PAGE_CACHE_SIZE - cbuf_data(&con->cb);
 		iov[1].iov_len = con->cb.base;
 		iov[1].iov_base = page_address(con->rx_page);
-		msg.msg_iovlen = 2;
+		nvec = 2;
 	}
 	len = iov[0].iov_len + iov[1].iov_len;
 
-	fs = get_fs();
-	set_fs(get_ds());
-	r = ret = sock_recvmsg(con->sock, &msg, len,
+	r = ret = kernel_recvmsg(con->sock, &msg, iov, nvec, len,
 			       MSG_DONTWAIT | MSG_NOSIGNAL);
-	set_fs(fs);
 
 	if (ret <= 0)
 		goto out_close;
+	if (ret == -EAGAIN)
+		goto out_resched;
+
 	if (ret == len)
 		call_again_soon = 1;
 	cbuf_add(&con->cb, ret);
@@ -381,24 +343,26 @@ static int receive_from_sock(struct connection *con)
 		con->rx_page = NULL;
 	}
 
-out:
 	if (call_again_soon)
 		goto out_resched;
-	up_read(&con->sock_sem);
+	mutex_unlock(&con->sock_mutex);
 	return 0;
 
 out_resched:
-	lowcomms_data_ready(con->sock->sk, 0);
-	up_read(&con->sock_sem);
-	cond_resched();
-	return 0;
+	if (!test_and_set_bit(CF_READ_PENDING, &con->flags))
+		queue_work(recv_workqueue, &con->rwork);
+	mutex_unlock(&con->sock_mutex);
+	return -EAGAIN;
 
 out_close:
-	up_read(&con->sock_sem);
+	mutex_unlock(&con->sock_mutex);
 	if (ret != -EAGAIN && !test_bit(CF_IS_OTHERCON, &con->flags)) {
 		close_connection(con, false);
 		/* Reconnect when there is something to send */
 	}
+	/* Don't return success if we really got EOF */
+	if (ret == 0)
+		ret = -EAGAIN;
 
 	return ret;
 }
@@ -412,6 +376,7 @@ static int accept_from_sock(struct connection *con)
 	int len;
 	int nodeid;
 	struct connection *newcon;
+	struct connection *addcon;
 
 	memset(&peeraddr, 0, sizeof(peeraddr));
 	result = sock_create_kern(dlm_local_addr.ss_family, SOCK_STREAM,
@@ -419,7 +384,7 @@ static int accept_from_sock(struct connection *con)
 	if (result < 0)
 		return -ENOMEM;
 
-	down_read(&con->sock_sem);
+	mutex_lock_nested(&con->sock_mutex, 0);
 
 	result = -ENOTCONN;
 	if (con->sock == NULL)
@@ -445,7 +410,7 @@ static int accept_from_sock(struct connection *con)
 	if (dlm_addr_to_nodeid(&peeraddr, &nodeid)) {
 		printk("dlm: connect from non cluster node\n");
 		sock_release(newsock);
-		up_read(&con->sock_sem);
+		mutex_unlock(&con->sock_mutex);
 		return -1;
 	}
 
@@ -462,7 +427,7 @@ static int accept_from_sock(struct connection *con)
 		result = -ENOMEM;
 		goto accept_err;
 	}
-	down_write(&newcon->sock_sem);
+	mutex_lock_nested(&newcon->sock_mutex, 1);
 	if (newcon->sock) {
 		struct connection *othercon = newcon->othercon;
 
@@ -470,41 +435,45 @@ static int accept_from_sock(struct connection *con)
 			othercon = kmem_cache_zalloc(con_cache, GFP_KERNEL);
 			if (!othercon) {
 				printk("dlm: failed to allocate incoming socket\n");
-				up_write(&newcon->sock_sem);
+				mutex_unlock(&newcon->sock_mutex);
 				result = -ENOMEM;
 				goto accept_err;
 			}
 			othercon->nodeid = nodeid;
 			othercon->rx_action = receive_from_sock;
-			init_rwsem(&othercon->sock_sem);
+			mutex_init(&othercon->sock_mutex);
+			INIT_WORK(&othercon->swork, process_send_sockets);
+			INIT_WORK(&othercon->rwork, process_recv_sockets);
 			set_bit(CF_IS_OTHERCON, &othercon->flags);
 			newcon->othercon = othercon;
 		}
 		othercon->sock = newsock;
 		newsock->sk->sk_user_data = othercon;
 		add_sock(newsock, othercon);
+		addcon = othercon;
 	}
 	else {
 		newsock->sk->sk_user_data = newcon;
 		newcon->rx_action = receive_from_sock;
 		add_sock(newsock, newcon);
-
+		addcon = newcon;
 	}
 
-	up_write(&newcon->sock_sem);
+	mutex_unlock(&newcon->sock_mutex);
 
 	/*
 	 * Add it to the active queue in case we got data
 	 * beween processing the accept adding the socket
 	 * to the read_sockets list
 	 */
-	lowcomms_data_ready(newsock->sk, 0);
-	up_read(&con->sock_sem);
+	if (!test_and_set_bit(CF_READ_PENDING, &addcon->flags))
+		queue_work(recv_workqueue, &addcon->rwork);
+	mutex_unlock(&con->sock_mutex);
 
 	return 0;
 
 accept_err:
-	up_read(&con->sock_sem);
+	mutex_unlock(&con->sock_mutex);
 	sock_release(newsock);
 
 	if (result != -EAGAIN)
@@ -525,7 +494,7 @@ static void connect_to_sock(struct connection *con)
 		return;
 	}
 
-	down_write(&con->sock_sem);
+	mutex_lock(&con->sock_mutex);
 	if (con->retries++ > MAX_CONNECT_RETRIES)
 		goto out;
 
@@ -548,7 +517,7 @@ static void connect_to_sock(struct connection *con)
 	sock->sk->sk_user_data = con;
 	con->rx_action = receive_from_sock;
 
-	make_sockaddr(&saddr, dlm_config.tcp_port, &addr_len);
+	make_sockaddr(&saddr, dlm_config.ci_tcp_port, &addr_len);
 
 	add_sock(sock, con);
 
@@ -577,7 +546,7 @@ out_err:
 		result = 0;
 	}
 out:
-	up_write(&con->sock_sem);
+	mutex_unlock(&con->sock_mutex);
 	return;
 }
 
@@ -616,10 +585,10 @@ static struct socket *create_listen_sock(struct connection *con,
 	con->sock = sock;
 
 	/* Bind to our port */
-	make_sockaddr(saddr, dlm_config.tcp_port, &addr_len);
+	make_sockaddr(saddr, dlm_config.ci_tcp_port, &addr_len);
 	result = sock->ops->bind(sock, (struct sockaddr *) saddr, addr_len);
 	if (result < 0) {
-		printk("dlm: Can't bind to port %d\n", dlm_config.tcp_port);
+		printk("dlm: Can't bind to port %d\n", dlm_config.ci_tcp_port);
 		sock_release(sock);
 		sock = NULL;
 		con->sock = NULL;
@@ -638,7 +607,7 @@ static struct socket *create_listen_sock(struct connection *con,
 
 	result = sock->ops->listen(sock, 5);
 	if (result < 0) {
-		printk("dlm: Can't listen on port %d\n", dlm_config.tcp_port);
+		printk("dlm: Can't listen on port %d\n", dlm_config.ci_tcp_port);
 		sock_release(sock);
 		sock = NULL;
 		goto create_out;
@@ -709,6 +678,7 @@ void *dlm_lowcomms_get_buffer(int nodeid, int len,
 	if (!con)
 		return NULL;
 
+	spin_lock(&con->writequeue_lock);
 	e = list_entry(con->writequeue.prev, struct writequeue_entry, list);
 	if ((&e->list == &con->writequeue) ||
 	    (PAGE_CACHE_SIZE - e->end < len)) {
@@ -747,6 +717,7 @@ void dlm_lowcomms_commit_buffer(void *mh)
 	struct connection *con = e->con;
 	int users;
 
+	spin_lock(&con->writequeue_lock);
 	users = --e->users;
 	if (users)
 		goto out;
@@ -754,12 +725,8 @@ void dlm_lowcomms_commit_buffer(void *mh)
 	kunmap(e->page);
 	spin_unlock(&con->writequeue_lock);
 
-	if (test_and_set_bit(CF_WRITE_PENDING, &con->flags) == 0) {
-		spin_lock_bh(&write_sockets_lock);
-		list_add_tail(&con->write_list, &write_sockets);
-		spin_unlock_bh(&write_sockets_lock);
-
-		wake_up_interruptible(&lowcomms_send_waitq);
+	if (!test_and_set_bit(CF_WRITE_PENDING, &con->flags)) {
+		queue_work(send_workqueue, &con->swork);
 	}
 	return;
 
@@ -783,7 +750,7 @@ static void send_to_sock(struct connection *con)
 	struct writequeue_entry *e;
 	int len, offset;
 
-	down_read(&con->sock_sem);
+	mutex_lock(&con->sock_mutex);
 	if (con->sock == NULL)
 		goto out_connect;
 
@@ -800,6 +767,7 @@ static void send_to_sock(struct connection *con)
 		offset = e->offset;
 		BUG_ON(len == 0 && e->users == 0);
 		spin_unlock(&con->writequeue_lock);
+		kmap(e->page);
 
 		ret = 0;
 		if (len) {
@@ -828,18 +796,18 @@ static void send_to_sock(struct connection *con)
 	}
 	spin_unlock(&con->writequeue_lock);
 out:
-	up_read(&con->sock_sem);
+	mutex_unlock(&con->sock_mutex);
 	return;
 
 send_error:
-	up_read(&con->sock_sem);
+	mutex_unlock(&con->sock_mutex);
 	close_connection(con, false);
 	lowcomms_connect_sock(con);
 	return;
 
 out_connect:
-	up_read(&con->sock_sem);
-	lowcomms_connect_sock(con);
+	mutex_unlock(&con->sock_mutex);
+	connect_to_sock(con);
 	return;
 }
 
@@ -872,7 +840,6 @@ int dlm_lowcomms_close(int nodeid)
 	if (con) {
 		clean_one_writequeue(con);
 		close_connection(con, true);
-		atomic_set(&con->waiting_requests, 0);
 	}
 	return 0;
 
@@ -880,102 +847,29 @@ out:
 	return -1;
 }
 
-/* API send message call, may queue the request */
-/* N.B. This is the old interface - use the new one for new calls */
-int lowcomms_send_message(int nodeid, char *buf, int len, gfp_t allocation)
-{
-	struct writequeue_entry *e;
-	char *b;
-
-	e = dlm_lowcomms_get_buffer(nodeid, len, allocation, &b);
-	if (e) {
-		memcpy(b, buf, len);
-		dlm_lowcomms_commit_buffer(e);
-		return 0;
-	}
-	return -ENOBUFS;
-}
-
 /* Look for activity on active sockets */
-static void process_sockets(void)
+static void process_recv_sockets(struct work_struct *work)
 {
-	struct list_head *list;
-	struct list_head *temp;
-	int count = 0;
-
-	spin_lock_bh(&read_sockets_lock);
-	list_for_each_safe(list, temp, &read_sockets) {
-
-		struct connection *con =
-			list_entry(list, struct connection, read_list);
-		list_del(&con->read_list);
-		clear_bit(CF_READ_PENDING, &con->flags);
-
-		spin_unlock_bh(&read_sockets_lock);
-
-		/* This can reach zero if we are processing requests
-		 * as they come in.
-		 */
-		if (atomic_read(&con->waiting_requests) == 0) {
-			spin_lock_bh(&read_sockets_lock);
-			continue;
-		}
-
-		do {
-			con->rx_action(con);
-
-			/* Don't starve out everyone else */
-			if (++count >= MAX_RX_MSG_COUNT) {
-				cond_resched();
-				count = 0;
-			}
+	struct connection *con = container_of(work, struct connection, rwork);
+	int err;
 
-		} while (!atomic_dec_and_test(&con->waiting_requests) &&
-			 !kthread_should_stop());
-
-		spin_lock_bh(&read_sockets_lock);
-	}
-	spin_unlock_bh(&read_sockets_lock);
+	clear_bit(CF_READ_PENDING, &con->flags);
+	do {
+		err = con->rx_action(con);
+	} while (!err);
 }
 
-/* Try to send any messages that are pending
- */
-static void process_output_queue(void)
-{
-	struct list_head *list;
-	struct list_head *temp;
-
-	spin_lock_bh(&write_sockets_lock);
-	list_for_each_safe(list, temp, &write_sockets) {
-		struct connection *con =
-			list_entry(list, struct connection, write_list);
-		clear_bit(CF_WRITE_PENDING, &con->flags);
-		list_del(&con->write_list);
 
-		spin_unlock_bh(&write_sockets_lock);
-		send_to_sock(con);
-		spin_lock_bh(&write_sockets_lock);
-	}
-	spin_unlock_bh(&write_sockets_lock);
-}
-
-static void process_state_queue(void)
+static void process_send_sockets(struct work_struct *work)
 {
-	struct list_head *list;
-	struct list_head *temp;
-
-	spin_lock_bh(&state_sockets_lock);
-	list_for_each_safe(list, temp, &state_sockets) {
-		struct connection *con =
-			list_entry(list, struct connection, state_list);
-		list_del(&con->state_list);
-		clear_bit(CF_CONNECT_PENDING, &con->flags);
-		spin_unlock_bh(&state_sockets_lock);
+	struct connection *con = container_of(work, struct connection, swork);
 
+	if (test_and_clear_bit(CF_CONNECT_PENDING, &con->flags)) {
 		connect_to_sock(con);
-		spin_lock_bh(&state_sockets_lock);
 	}
-	spin_unlock_bh(&state_sockets_lock);
+
+	clear_bit(CF_WRITE_PENDING, &con->flags);
+	send_to_sock(con);
 }
 
 
@@ -992,109 +886,33 @@ static void clean_writequeues(void)
 	}
 }
 
-static int read_list_empty(void)
-{
-	int status;
-
-	spin_lock_bh(&read_sockets_lock);
-	status = list_empty(&read_sockets);
-	spin_unlock_bh(&read_sockets_lock);
-
-	return status;
-}
-
-/* DLM Transport comms receive daemon */
-static int dlm_recvd(void *data)
+static void work_stop(void)
 {
-	init_waitqueue_entry(&lowcomms_recv_waitq_head, current);
-	add_wait_queue(&lowcomms_recv_waitq, &lowcomms_recv_waitq_head);
-
-	while (!kthread_should_stop()) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		if (read_list_empty())
-			cond_resched();
-		set_current_state(TASK_RUNNING);
-
-		process_sockets();
-	}
-
-	return 0;
+	destroy_workqueue(recv_workqueue);
+	destroy_workqueue(send_workqueue);
 }
 
-static int write_and_state_lists_empty(void)
+static int work_start(void)
 {
-	int status;
-
-	spin_lock_bh(&write_sockets_lock);
-	status = list_empty(&write_sockets);
-	spin_unlock_bh(&write_sockets_lock);
-
-	spin_lock_bh(&state_sockets_lock);
-	if (list_empty(&state_sockets) == 0)
-		status = 0;
-	spin_unlock_bh(&state_sockets_lock);
-
-	return status;
-}
-
-/* DLM Transport send daemon */
-static int dlm_sendd(void *data)
-{
-	init_waitqueue_entry(&lowcomms_send_waitq_head, current);
-	add_wait_queue(&lowcomms_send_waitq, &lowcomms_send_waitq_head);
-
-	while (!kthread_should_stop()) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		if (write_and_state_lists_empty())
-			cond_resched();
-		set_current_state(TASK_RUNNING);
-
-		process_state_queue();
-		process_output_queue();
-	}
-
-	return 0;
-}
-
-static void daemons_stop(void)
-{
-	kthread_stop(recv_task);
-	kthread_stop(send_task);
-}
-
-static int daemons_start(void)
-{
-	struct task_struct *p;
 	int error;
-
-	p = kthread_run(dlm_recvd, NULL, "dlm_recvd");
-	error = IS_ERR(p);
+	recv_workqueue = create_workqueue("dlm_recv");
+	error = IS_ERR(recv_workqueue);
 	if (error) {
-		log_print("can't start dlm_recvd %d", error);
+		log_print("can't start dlm_recv %d", error);
 		return error;
 	}
-	recv_task = p;
 
-	p = kthread_run(dlm_sendd, NULL, "dlm_sendd");
-	error = IS_ERR(p);
+	send_workqueue = create_singlethread_workqueue("dlm_send");
+	error = IS_ERR(send_workqueue);
 	if (error) {
-		log_print("can't start dlm_sendd %d", error);
-		kthread_stop(recv_task);
+		log_print("can't start dlm_send %d", error);
+		destroy_workqueue(recv_workqueue);
 		return error;
 	}
-	send_task = p;
 
 	return 0;
 }
 
-/*
- * Return the largest buffer size we can cope with.
- */
-int lowcomms_max_buffer_size(void)
-{
-	return PAGE_CACHE_SIZE;
-}
-
 void dlm_lowcomms_stop(void)
 {
 	int i;
@@ -1107,7 +925,7 @@ void dlm_lowcomms_stop(void)
 			connections[i]->flags |= 0xFF;
 	}
 
-	daemons_stop();
+	work_stop();
 	clean_writequeues();
 
 	for (i = 0; i < conn_array_size; i++) {
@@ -1159,7 +977,7 @@ int dlm_lowcomms_start(void)
 	if (error)
 		goto fail_unlisten;
 
-	error = daemons_start();
+	error = work_start();
 	if (error)
 		goto fail_unlisten;
 
diff --git a/fs/dlm/memory.c b/fs/dlm/memory.c
index 5352b03..f858fef 100644
--- a/fs/dlm/memory.c
+++ b/fs/dlm/memory.c
@@ -76,9 +76,7 @@ struct dlm_lkb *allocate_lkb(struct dlm_ls *ls)
 {
 	struct dlm_lkb *lkb;
 
-	lkb = kmem_cache_alloc(lkb_cache, GFP_KERNEL);
-	if (lkb)
-		memset(lkb, 0, sizeof(*lkb));
+	lkb = kmem_cache_zalloc(lkb_cache, GFP_KERNEL);
 	return lkb;
 }
 
diff --git a/fs/dlm/midcomms.c b/fs/dlm/midcomms.c
index c9b1c3d..a5126e0 100644
--- a/fs/dlm/midcomms.c
+++ b/fs/dlm/midcomms.c
@@ -82,7 +82,7 @@ int dlm_process_incoming_buffer(int nodeid, const void *base,
 		if (msglen < sizeof(struct dlm_header))
 			break;
 		err = -E2BIG;
-		if (msglen > dlm_config.buffer_size) {
+		if (msglen > dlm_config.ci_buffer_size) {
 			log_print("message size %d from %d too big, buf len %d",
 				  msglen, nodeid, len);
 			break;
@@ -103,7 +103,7 @@ int dlm_process_incoming_buffer(int nodeid, const void *base,
 
 		if (msglen > sizeof(__tmp) &&
 		    msg == (struct dlm_header *) __tmp) {
-			msg = kmalloc(dlm_config.buffer_size, GFP_KERNEL);
+			msg = kmalloc(dlm_config.ci_buffer_size, GFP_KERNEL);
 			if (msg == NULL)
 				return ret;
 		}
diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c
index 4cc31be..6bfbd61 100644
--- a/fs/dlm/rcom.c
+++ b/fs/dlm/rcom.c
@@ -56,6 +56,10 @@ static int create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len,
 
 	rc->rc_type = type;
 
+	spin_lock(&ls->ls_recover_lock);
+	rc->rc_seq = ls->ls_recover_seq;
+	spin_unlock(&ls->ls_recover_lock);
+
 	*mh_ret = mh;
 	*rc_ret = rc;
 	return 0;
@@ -78,8 +82,17 @@ static void make_config(struct dlm_ls *ls, struct rcom_config *rf)
 	rf->rf_lsflags = ls->ls_exflags;
 }
 
-static int check_config(struct dlm_ls *ls, struct rcom_config *rf, int nodeid)
+static int check_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
 {
+	struct rcom_config *rf = (struct rcom_config *) rc->rc_buf;
+
+	if ((rc->rc_header.h_version & 0xFFFF0000) != DLM_HEADER_MAJOR) {
+		log_error(ls, "version mismatch: %x nodeid %d: %x",
+			  DLM_HEADER_MAJOR | DLM_HEADER_MINOR, nodeid,
+			  rc->rc_header.h_version);
+		return -EINVAL;
+	}
+
 	if (rf->rf_lvblen != ls->ls_lvblen ||
 	    rf->rf_lsflags != ls->ls_exflags) {
 		log_error(ls, "config mismatch: %d,%x nodeid %d: %d,%x",
@@ -125,7 +138,7 @@ int dlm_rcom_status(struct dlm_ls *ls, int nodeid)
 		goto out;
 
 	allow_sync_reply(ls, &rc->rc_id);
-	memset(ls->ls_recover_buf, 0, dlm_config.buffer_size);
+	memset(ls->ls_recover_buf, 0, dlm_config.ci_buffer_size);
 
 	send_rcom(ls, mh, rc);
 
@@ -141,8 +154,7 @@ int dlm_rcom_status(struct dlm_ls *ls, int nodeid)
 		log_debug(ls, "remote node %d not ready", nodeid);
 		rc->rc_result = 0;
 	} else
-		error = check_config(ls, (struct rcom_config *) rc->rc_buf,
-				     nodeid);
+		error = check_config(ls, rc, nodeid);
 	/* the caller looks at rc_result for the remote recovery status */
  out:
 	return error;
@@ -159,6 +171,7 @@ static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in)
 	if (error)
 		return;
 	rc->rc_id = rc_in->rc_id;
+	rc->rc_seq_reply = rc_in->rc_seq;
 	rc->rc_result = dlm_recover_status(ls);
 	make_config(ls, (struct rcom_config *) rc->rc_buf);
 
@@ -200,7 +213,7 @@ int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len)
 	if (nodeid == dlm_our_nodeid()) {
 		dlm_copy_master_names(ls, last_name, last_len,
 		                      ls->ls_recover_buf + len,
-		                      dlm_config.buffer_size - len, nodeid);
+		                      dlm_config.ci_buffer_size - len, nodeid);
 		goto out;
 	}
 
@@ -210,7 +223,7 @@ int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len)
 	memcpy(rc->rc_buf, last_name, last_len);
 
 	allow_sync_reply(ls, &rc->rc_id);
-	memset(ls->ls_recover_buf, 0, dlm_config.buffer_size);
+	memset(ls->ls_recover_buf, 0, dlm_config.ci_buffer_size);
 
 	send_rcom(ls, mh, rc);
 
@@ -224,30 +237,17 @@ static void receive_rcom_names(struct dlm_ls *ls, struct dlm_rcom *rc_in)
 {
 	struct dlm_rcom *rc;
 	struct dlm_mhandle *mh;
-	int error, inlen, outlen;
-	int nodeid = rc_in->rc_header.h_nodeid;
-	uint32_t status = dlm_recover_status(ls);
-
-	/*
-	 * We can't run dlm_dir_rebuild_send (which uses ls_nodes) while
-	 * dlm_recoverd is running ls_nodes_reconfig (which changes ls_nodes).
-	 * It could only happen in rare cases where we get a late NAMES
-	 * message from a previous instance of recovery.
-	 */
-
-	if (!(status & DLM_RS_NODES)) {
-		log_debug(ls, "ignoring RCOM_NAMES from %u", nodeid);
-		return;
-	}
+	int error, inlen, outlen, nodeid;
 
 	nodeid = rc_in->rc_header.h_nodeid;
 	inlen = rc_in->rc_header.h_length - sizeof(struct dlm_rcom);
-	outlen = dlm_config.buffer_size - sizeof(struct dlm_rcom);
+	outlen = dlm_config.ci_buffer_size - sizeof(struct dlm_rcom);
 
 	error = create_rcom(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen, &rc, &mh);
 	if (error)
 		return;
 	rc->rc_id = rc_in->rc_id;
+	rc->rc_seq_reply = rc_in->rc_seq;
 
 	dlm_copy_master_names(ls, rc_in->rc_buf, inlen, rc->rc_buf, outlen,
 			      nodeid);
@@ -294,6 +294,7 @@ static void receive_rcom_lookup(struct dlm_ls *ls, struct dlm_rcom *rc_in)
 		ret_nodeid = error;
 	rc->rc_result = ret_nodeid;
 	rc->rc_id = rc_in->rc_id;
+	rc->rc_seq_reply = rc_in->rc_seq;
 
 	send_rcom(ls, mh, rc);
 }
@@ -375,20 +376,13 @@ static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in)
 
 	memcpy(rc->rc_buf, rc_in->rc_buf, sizeof(struct rcom_lock));
 	rc->rc_id = rc_in->rc_id;
+	rc->rc_seq_reply = rc_in->rc_seq;
 
 	send_rcom(ls, mh, rc);
 }
 
 static void receive_rcom_lock_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)
 {
-	uint32_t status = dlm_recover_status(ls);
-
-	if (!(status & DLM_RS_DIR)) {
-		log_debug(ls, "ignoring RCOM_LOCK_REPLY from %u",
-			  rc_in->rc_header.h_nodeid);
-		return;
-	}
-
 	dlm_recover_process_copy(ls, rc_in);
 }
 
@@ -415,6 +409,7 @@ static int send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in)
 
 	rc->rc_type = DLM_RCOM_STATUS_REPLY;
 	rc->rc_id = rc_in->rc_id;
+	rc->rc_seq_reply = rc_in->rc_seq;
 	rc->rc_result = -ESRCH;
 
 	rf = (struct rcom_config *) rc->rc_buf;
@@ -426,6 +421,31 @@ static int send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in)
 	return 0;
 }
 
+static int is_old_reply(struct dlm_ls *ls, struct dlm_rcom *rc)
+{
+	uint64_t seq;
+	int rv = 0;
+
+	switch (rc->rc_type) {
+	case DLM_RCOM_STATUS_REPLY:
+	case DLM_RCOM_NAMES_REPLY:
+	case DLM_RCOM_LOOKUP_REPLY:
+	case DLM_RCOM_LOCK_REPLY:
+		spin_lock(&ls->ls_recover_lock);
+		seq = ls->ls_recover_seq;
+		spin_unlock(&ls->ls_recover_lock);
+		if (rc->rc_seq_reply != seq) {
+			log_debug(ls, "ignoring old reply %x from %d "
+				      "seq_reply %llx expect %llx",
+				      rc->rc_type, rc->rc_header.h_nodeid,
+				      (unsigned long long)rc->rc_seq_reply,
+				      (unsigned long long)seq);
+			rv = 1;
+		}
+	}
+	return rv;
+}
+
 /* Called by dlm_recvd; corresponds to dlm_receive_message() but special
    recovery-only comms are sent through here. */
 
@@ -449,11 +469,14 @@ void dlm_receive_rcom(struct dlm_header *hd, int nodeid)
 	}
 
 	if (dlm_recovery_stopped(ls) && (rc->rc_type != DLM_RCOM_STATUS)) {
-		log_error(ls, "ignoring recovery message %x from %d",
+		log_debug(ls, "ignoring recovery message %x from %d",
 			  rc->rc_type, nodeid);
 		goto out;
 	}
 
+	if (is_old_reply(ls, rc))
+		goto out;
+
 	if (nodeid != rc->rc_header.h_nodeid) {
 		log_error(ls, "bad rcom nodeid %d from %d",
 			  rc->rc_header.h_nodeid, nodeid);
diff --git a/fs/dlm/recover.c b/fs/dlm/recover.c
index cf9f683..c2cc769 100644
--- a/fs/dlm/recover.c
+++ b/fs/dlm/recover.c
@@ -44,7 +44,7 @@
 static void dlm_wait_timer_fn(unsigned long data)
 {
 	struct dlm_ls *ls = (struct dlm_ls *) data;
-	mod_timer(&ls->ls_timer, jiffies + (dlm_config.recover_timer * HZ));
+	mod_timer(&ls->ls_timer, jiffies + (dlm_config.ci_recover_timer * HZ));
 	wake_up(&ls->ls_wait_general);
 }
 
@@ -55,7 +55,7 @@ int dlm_wait_function(struct dlm_ls *ls, int (*testfn) (struct dlm_ls *ls))
 	init_timer(&ls->ls_timer);
 	ls->ls_timer.function = dlm_wait_timer_fn;
 	ls->ls_timer.data = (long) ls;
-	ls->ls_timer.expires = jiffies + (dlm_config.recover_timer * HZ);
+	ls->ls_timer.expires = jiffies + (dlm_config.ci_recover_timer * HZ);
 	add_timer(&ls->ls_timer);
 
 	wait_event(ls->ls_wait_general, testfn(ls) || dlm_recovery_stopped(ls));
@@ -397,7 +397,9 @@ int dlm_recover_masters(struct dlm_ls *ls)
 
 		if (dlm_no_directory(ls))
 			count += recover_master_static(r);
-		else if (!is_master(r) && dlm_is_removed(ls, r->res_nodeid)) {
+		else if (!is_master(r) &&
+			 (dlm_is_removed(ls, r->res_nodeid) ||
+			  rsb_flag(r, RSB_NEW_MASTER))) {
 			recover_master(r);
 			count++;
 		}
diff --git a/fs/dlm/recoverd.c b/fs/dlm/recoverd.c
index 650536aa..3cb636d 100644
--- a/fs/dlm/recoverd.c
+++ b/fs/dlm/recoverd.c
@@ -77,7 +77,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
 
 	error = dlm_recover_members(ls, rv, &neg);
 	if (error) {
-		log_error(ls, "recover_members failed %d", error);
+		log_debug(ls, "recover_members failed %d", error);
 		goto fail;
 	}
 	start = jiffies;
@@ -89,7 +89,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
 
 	error = dlm_recover_directory(ls);
 	if (error) {
-		log_error(ls, "recover_directory failed %d", error);
+		log_debug(ls, "recover_directory failed %d", error);
 		goto fail;
 	}
 
@@ -99,7 +99,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
 
 	error = dlm_recover_directory_wait(ls);
 	if (error) {
-		log_error(ls, "recover_directory_wait failed %d", error);
+		log_debug(ls, "recover_directory_wait failed %d", error);
 		goto fail;
 	}
 
@@ -129,7 +129,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
 
 		error = dlm_recover_masters(ls);
 		if (error) {
-			log_error(ls, "recover_masters failed %d", error);
+			log_debug(ls, "recover_masters failed %d", error);
 			goto fail;
 		}
 
@@ -139,13 +139,13 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
 
 		error = dlm_recover_locks(ls);
 		if (error) {
-			log_error(ls, "recover_locks failed %d", error);
+			log_debug(ls, "recover_locks failed %d", error);
 			goto fail;
 		}
 
 		error = dlm_recover_locks_wait(ls);
 		if (error) {
-			log_error(ls, "recover_locks_wait failed %d", error);
+			log_debug(ls, "recover_locks_wait failed %d", error);
 			goto fail;
 		}
 
@@ -166,7 +166,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
 
 		error = dlm_recover_locks_wait(ls);
 		if (error) {
-			log_error(ls, "recover_locks_wait failed %d", error);
+			log_debug(ls, "recover_locks_wait failed %d", error);
 			goto fail;
 		}
 	}
@@ -184,7 +184,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
 	dlm_set_recover_status(ls, DLM_RS_DONE);
 	error = dlm_recover_done_wait(ls);
 	if (error) {
-		log_error(ls, "recover_done_wait failed %d", error);
+		log_debug(ls, "recover_done_wait failed %d", error);
 		goto fail;
 	}
 
@@ -192,19 +192,19 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
 
 	error = enable_locking(ls, rv->seq);
 	if (error) {
-		log_error(ls, "enable_locking failed %d", error);
+		log_debug(ls, "enable_locking failed %d", error);
 		goto fail;
 	}
 
 	error = dlm_process_requestqueue(ls);
 	if (error) {
-		log_error(ls, "process_requestqueue failed %d", error);
+		log_debug(ls, "process_requestqueue failed %d", error);
 		goto fail;
 	}
 
 	error = dlm_recover_waiters_post(ls);
 	if (error) {
-		log_error(ls, "recover_waiters_post failed %d", error);
+		log_debug(ls, "recover_waiters_post failed %d", error);
 		goto fail;
 	}
 
diff --git a/fs/dlm/user.c b/fs/dlm/user.c
index c37e93e..40db61d 100644
--- a/fs/dlm/user.c
+++ b/fs/dlm/user.c
@@ -25,7 +25,7 @@
 
 static const char *name_prefix="dlm";
 static struct miscdevice ctl_device;
-static struct file_operations device_fops;
+static const struct file_operations device_fops;
 
 #ifdef CONFIG_COMPAT
 
@@ -180,6 +180,14 @@ void dlm_user_add_ast(struct dlm_lkb *lkb, int type)
 	    ua->lksb.sb_status == -EAGAIN && !list_empty(&lkb->lkb_ownqueue))
 		remove_ownqueue = 1;
 
+	/* unlocks or cancels of waiting requests need to be removed from the
+	   proc's unlocking list, again there must be a better way...  */
+
+	if (ua->lksb.sb_status == -DLM_EUNLOCK ||
+	    (ua->lksb.sb_status == -DLM_ECANCEL &&
+	     lkb->lkb_grmode == DLM_LOCK_IV))
+		remove_ownqueue = 1;
+
 	/* We want to copy the lvb to userspace when the completion
 	   ast is read if the status is 0, the lock has an lvb and
 	   lvb_ops says we should.  We could probably have set_lvb_lock()
@@ -523,6 +531,7 @@ static int device_open(struct inode *inode, struct file *file)
 	proc->lockspace = ls->ls_local_handle;
 	INIT_LIST_HEAD(&proc->asts);
 	INIT_LIST_HEAD(&proc->locks);
+	INIT_LIST_HEAD(&proc->unlocking);
 	spin_lock_init(&proc->asts_spin);
 	spin_lock_init(&proc->locks_spin);
 	init_waitqueue_head(&proc->wait);
@@ -750,7 +759,7 @@ static int ctl_device_close(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static struct file_operations device_fops = {
+static const struct file_operations device_fops = {
 	.open    = device_open,
 	.release = device_close,
 	.read    = device_read,
@@ -759,7 +768,7 @@ static struct file_operations device_fops = {
 	.owner   = THIS_MODULE,
 };
 
-static struct file_operations ctl_device_fops = {
+static const struct file_operations ctl_device_fops = {
 	.open    = ctl_device_open,
 	.release = ctl_device_close,
 	.write   = device_write,
diff --git a/fs/dlm/util.c b/fs/dlm/util.c
index 767197d..963889c 100644
--- a/fs/dlm/util.c
+++ b/fs/dlm/util.c
@@ -134,6 +134,8 @@ void dlm_rcom_out(struct dlm_rcom *rc)
 	rc->rc_type		= cpu_to_le32(rc->rc_type);
 	rc->rc_result		= cpu_to_le32(rc->rc_result);
 	rc->rc_id		= cpu_to_le64(rc->rc_id);
+	rc->rc_seq		= cpu_to_le64(rc->rc_seq);
+	rc->rc_seq_reply	= cpu_to_le64(rc->rc_seq_reply);
 
 	if (type == DLM_RCOM_LOCK)
 		rcom_lock_out((struct rcom_lock *) rc->rc_buf);
@@ -151,6 +153,8 @@ void dlm_rcom_in(struct dlm_rcom *rc)
 	rc->rc_type		= le32_to_cpu(rc->rc_type);
 	rc->rc_result		= le32_to_cpu(rc->rc_result);
 	rc->rc_id		= le64_to_cpu(rc->rc_id);
+	rc->rc_seq		= le64_to_cpu(rc->rc_seq);
+	rc->rc_seq_reply	= le64_to_cpu(rc->rc_seq_reply);
 
 	if (rc->rc_type == DLM_RCOM_LOCK)
 		rcom_lock_in((struct rcom_lock *) rc->rc_buf);
diff --git a/fs/dquot.c b/fs/dquot.c
index 0952cc4..9eb166f 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -79,6 +79,7 @@
 #include <linux/buffer_head.h>
 #include <linux/capability.h>
 #include <linux/quotaops.h>
+#include <linux/writeback.h> /* for inode_lock, oddly enough.. */
 
 #include <asm/uaccess.h>
 
@@ -600,11 +601,10 @@ static struct dquot *get_empty_dquot(struct super_block *sb, int type)
 {
 	struct dquot *dquot;
 
-	dquot = kmem_cache_alloc(dquot_cachep, GFP_NOFS);
+	dquot = kmem_cache_zalloc(dquot_cachep, GFP_NOFS);
 	if(!dquot)
 		return NODQUOT;
 
-	memset((caddr_t)dquot, 0, sizeof(struct dquot));
 	mutex_init(&dquot->dq_lock);
 	INIT_LIST_HEAD(&dquot->dq_free);
 	INIT_LIST_HEAD(&dquot->dq_inuse);
@@ -688,23 +688,27 @@ static int dqinit_needed(struct inode *inode, int type)
 /* This routine is guarded by dqonoff_mutex mutex */
 static void add_dquot_ref(struct super_block *sb, int type)
 {
-	struct list_head *p;
+	struct inode *inode;
 
 restart:
-	file_list_lock();
-	list_for_each(p, &sb->s_files) {
-		struct file *filp = list_entry(p, struct file, f_u.fu_list);
-		struct inode *inode = filp->f_path.dentry->d_inode;
-		if (filp->f_mode & FMODE_WRITE && dqinit_needed(inode, type)) {
-			struct dentry *dentry = dget(filp->f_path.dentry);
-			file_list_unlock();
-			sb->dq_op->initialize(inode, type);
-			dput(dentry);
-			/* As we may have blocked we had better restart... */
-			goto restart;
-		}
+	spin_lock(&inode_lock);
+	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
+		if (!atomic_read(&inode->i_writecount))
+			continue;
+		if (!dqinit_needed(inode, type))
+			continue;
+		if (inode->i_state & (I_FREEING|I_WILL_FREE))
+			continue;
+
+		__iget(inode);
+		spin_unlock(&inode_lock);
+
+		sb->dq_op->initialize(inode, type);
+		iput(inode);
+		/* As we may have blocked we had better restart... */
+		goto restart;
 	}
-	file_list_unlock();
+	spin_unlock(&inode_lock);
 }
 
 /* Return 0 if dqput() won't block (note that 1 doesn't necessarily mean blocking) */
@@ -756,15 +760,30 @@ static void put_dquot_list(struct list_head *tofree_head)
 	}
 }
 
+static void remove_dquot_ref(struct super_block *sb, int type,
+		struct list_head *tofree_head)
+{
+	struct inode *inode;
+
+	spin_lock(&inode_lock);
+	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
+		if (!IS_NOQUOTA(inode))
+			remove_inode_dquot_ref(inode, type, tofree_head);
+	}
+	spin_unlock(&inode_lock);
+}
+
 /* Gather all references from inodes and drop them */
 static void drop_dquot_ref(struct super_block *sb, int type)
 {
 	LIST_HEAD(tofree_head);
 
-	down_write(&sb_dqopt(sb)->dqptr_sem);
-	remove_dquot_ref(sb, type, &tofree_head);
-	up_write(&sb_dqopt(sb)->dqptr_sem);
-	put_dquot_list(&tofree_head);
+	if (sb->dq_op) {
+		down_write(&sb_dqopt(sb)->dqptr_sem);
+		remove_dquot_ref(sb, type, &tofree_head);
+		up_write(&sb_dqopt(sb)->dqptr_sem);
+		put_dquot_list(&tofree_head);
+	}
 }
 
 static inline void dquot_incr_inodes(struct dquot *dquot, unsigned long number)
diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index 4e47623..03ea769 100644
--- a/fs/drop_caches.c
+++ b/fs/drop_caches.c
@@ -20,7 +20,7 @@ static void drop_pagecache_sb(struct super_block *sb)
 	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
 		if (inode->i_state & (I_FREEING|I_WILL_FREE))
 			continue;
-		invalidate_inode_pages(inode->i_mapping);
+		invalidate_mapping_pages(inode->i_mapping, 0, -1);
 	}
 	spin_unlock(&inode_lock);
 }
diff --git a/fs/ecryptfs/Makefile b/fs/ecryptfs/Makefile
index ca65624..1f11072 100644
--- a/fs/ecryptfs/Makefile
+++ b/fs/ecryptfs/Makefile
@@ -4,4 +4,4 @@
 
 obj-$(CONFIG_ECRYPT_FS) += ecryptfs.o
 
-ecryptfs-objs := dentry.o file.o inode.o main.o super.o mmap.o crypto.o keystore.o debug.o
+ecryptfs-objs := dentry.o file.o inode.o main.o super.o mmap.o crypto.o keystore.o messaging.o netlink.o debug.o
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index 7196f50..6ac6306 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1997-2004 Erez Zadok
  * Copyright (C) 2001-2004 Stony Brook University
- * Copyright (C) 2004-2006 International Business Machines Corp.
+ * Copyright (C) 2004-2007 International Business Machines Corp.
  *   Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
  *   		Michael C. Thompson <mcthomps@us.ibm.com>
  *
@@ -207,7 +207,7 @@ ecryptfs_init_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat)
 	mutex_init(&crypt_stat->cs_mutex);
 	mutex_init(&crypt_stat->cs_tfm_mutex);
 	mutex_init(&crypt_stat->cs_hash_tfm_mutex);
-	ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_STRUCT_INITIALIZED);
+	crypt_stat->flags |= ECRYPTFS_STRUCT_INITIALIZED;
 }
 
 /**
@@ -305,8 +305,7 @@ static int encrypt_scatterlist(struct ecryptfs_crypt_stat *crypt_stat,
 	int rc = 0;
 
 	BUG_ON(!crypt_stat || !crypt_stat->tfm
-	       || !ECRYPTFS_CHECK_FLAG(crypt_stat->flags,
-				       ECRYPTFS_STRUCT_INITIALIZED));
+	       || !(crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED));
 	if (unlikely(ecryptfs_verbosity > 0)) {
 		ecryptfs_printk(KERN_DEBUG, "Key size [%d]; key:\n",
 				crypt_stat->key_size);
@@ -429,10 +428,10 @@ static int ecryptfs_read_in_page(struct ecryptfs_page_crypt_context *ctx,
 			goto out;
 		}
 	} else {
-		rc = ecryptfs_grab_and_map_lower_page(lower_page, NULL,
-						      lower_inode,
-						      lower_page_idx);
-		if (rc) {
+		*lower_page = grab_cache_page(lower_inode->i_mapping,
+					      lower_page_idx);
+		if (!(*lower_page)) {
+			rc = -EINVAL;
 			ecryptfs_printk(
 				KERN_ERR, "Error attempting to grab and map "
 				"lower page with index [0x%.16x]; rc = [%d]\n",
@@ -485,7 +484,7 @@ int ecryptfs_encrypt_page(struct ecryptfs_page_crypt_context *ctx)
 	lower_inode = ecryptfs_inode_to_lower(ctx->page->mapping->host);
 	inode_info = ecryptfs_inode_to_private(ctx->page->mapping->host);
 	crypt_stat = &inode_info->crypt_stat;
-	if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_ENCRYPTED)) {
+	if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
 		rc = ecryptfs_copy_page_to_lower(ctx->page, lower_inode,
 						 ctx->param.lower_file);
 		if (rc)
@@ -617,7 +616,7 @@ int ecryptfs_decrypt_page(struct file *file, struct page *page)
 	crypt_stat = &(ecryptfs_inode_to_private(
 			       page->mapping->host)->crypt_stat);
 	lower_inode = ecryptfs_inode_to_lower(page->mapping->host);
-	if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_ENCRYPTED)) {
+	if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
 		rc = ecryptfs_do_readpage(file, page, page->index);
 		if (rc)
 			ecryptfs_printk(KERN_ERR, "Error attempting to copy "
@@ -828,9 +827,7 @@ int ecryptfs_init_crypt_ctx(struct ecryptfs_crypt_stat *crypt_stat)
 		mutex_unlock(&crypt_stat->cs_tfm_mutex);
 		goto out;
 	}
-	crypto_blkcipher_set_flags(crypt_stat->tfm,
-				   (ECRYPTFS_DEFAULT_CHAINING_MODE
-				    | CRYPTO_TFM_REQ_WEAK_KEY));
+	crypto_blkcipher_set_flags(crypt_stat->tfm, CRYPTO_TFM_REQ_WEAK_KEY);
 	mutex_unlock(&crypt_stat->cs_tfm_mutex);
 	rc = 0;
 out:
@@ -865,7 +862,10 @@ void ecryptfs_set_default_sizes(struct ecryptfs_crypt_stat *crypt_stat)
 			ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE;
 	} else
 		crypt_stat->header_extent_size = PAGE_CACHE_SIZE;
-	crypt_stat->num_header_extents_at_front = 1;
+	if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR)
+		crypt_stat->num_header_extents_at_front = 0;
+	else
+		crypt_stat->num_header_extents_at_front = 1;
 }
 
 /**
@@ -881,7 +881,7 @@ int ecryptfs_compute_root_iv(struct ecryptfs_crypt_stat *crypt_stat)
 
 	BUG_ON(crypt_stat->iv_bytes > MD5_DIGEST_SIZE);
 	BUG_ON(crypt_stat->iv_bytes <= 0);
-	if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_KEY_VALID)) {
+	if (!(crypt_stat->flags & ECRYPTFS_KEY_VALID)) {
 		rc = -EINVAL;
 		ecryptfs_printk(KERN_WARNING, "Session key not valid; "
 				"cannot generate root IV\n");
@@ -898,8 +898,7 @@ int ecryptfs_compute_root_iv(struct ecryptfs_crypt_stat *crypt_stat)
 out:
 	if (rc) {
 		memset(crypt_stat->root_iv, 0, crypt_stat->iv_bytes);
-		ECRYPTFS_SET_FLAG(crypt_stat->flags,
-				  ECRYPTFS_SECURITY_WARNING);
+		crypt_stat->flags |= ECRYPTFS_SECURITY_WARNING;
 	}
 	return rc;
 }
@@ -907,7 +906,7 @@ out:
 static void ecryptfs_generate_new_key(struct ecryptfs_crypt_stat *crypt_stat)
 {
 	get_random_bytes(crypt_stat->key, crypt_stat->key_size);
-	ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_KEY_VALID);
+	crypt_stat->flags |= ECRYPTFS_KEY_VALID;
 	ecryptfs_compute_root_iv(crypt_stat);
 	if (unlikely(ecryptfs_verbosity > 0)) {
 		ecryptfs_printk(KERN_DEBUG, "Generated new session key:\n");
@@ -917,6 +916,22 @@ static void ecryptfs_generate_new_key(struct ecryptfs_crypt_stat *crypt_stat)
 }
 
 /**
+ * ecryptfs_copy_mount_wide_flags_to_inode_flags
+ *
+ * This function propagates the mount-wide flags to individual inode
+ * flags.
+ */
+static void ecryptfs_copy_mount_wide_flags_to_inode_flags(
+	struct ecryptfs_crypt_stat *crypt_stat,
+	struct ecryptfs_mount_crypt_stat *mount_crypt_stat)
+{
+	if (mount_crypt_stat->flags & ECRYPTFS_XATTR_METADATA_ENABLED)
+		crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR;
+	if (mount_crypt_stat->flags & ECRYPTFS_ENCRYPTED_VIEW_ENABLED)
+		crypt_stat->flags |= ECRYPTFS_VIEW_AS_ENCRYPTED;
+}
+
+/**
  * ecryptfs_set_default_crypt_stat_vals
  * @crypt_stat
  *
@@ -926,10 +941,12 @@ static void ecryptfs_set_default_crypt_stat_vals(
 	struct ecryptfs_crypt_stat *crypt_stat,
 	struct ecryptfs_mount_crypt_stat *mount_crypt_stat)
 {
+	ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat,
+						      mount_crypt_stat);
 	ecryptfs_set_default_sizes(crypt_stat);
 	strcpy(crypt_stat->cipher, ECRYPTFS_DEFAULT_CIPHER);
 	crypt_stat->key_size = ECRYPTFS_DEFAULT_KEY_BYTES;
-	ECRYPTFS_CLEAR_FLAG(crypt_stat->flags, ECRYPTFS_KEY_VALID);
+	crypt_stat->flags &= ~(ECRYPTFS_KEY_VALID);
 	crypt_stat->file_version = ECRYPTFS_FILE_VERSION;
 	crypt_stat->mount_crypt_stat = mount_crypt_stat;
 }
@@ -969,8 +986,10 @@ int ecryptfs_new_file_context(struct dentry *ecryptfs_dentry)
 	if (mount_crypt_stat->global_auth_tok) {
 		ecryptfs_printk(KERN_DEBUG, "Initializing context for new "
 				"file using mount_crypt_stat\n");
-		ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_ENCRYPTED);
-		ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_KEY_VALID);
+		crypt_stat->flags |= ECRYPTFS_ENCRYPTED;
+		crypt_stat->flags |= ECRYPTFS_KEY_VALID;
+		ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat,
+							      mount_crypt_stat);
 		memcpy(crypt_stat->keysigs[crypt_stat->num_keysigs++],
 		       mount_crypt_stat->global_auth_tok_sig,
 		       ECRYPTFS_SIG_SIZE_HEX);
@@ -1003,7 +1022,7 @@ int ecryptfs_new_file_context(struct dentry *ecryptfs_dentry)
  *
  * Returns one if marker found; zero if not found
  */
-int contains_ecryptfs_marker(char *data)
+static int contains_ecryptfs_marker(char *data)
 {
 	u32 m_1, m_2;
 
@@ -1029,7 +1048,8 @@ struct ecryptfs_flag_map_elem {
 /* Add support for additional flags by adding elements here. */
 static struct ecryptfs_flag_map_elem ecryptfs_flag_map[] = {
 	{0x00000001, ECRYPTFS_ENABLE_HMAC},
-	{0x00000002, ECRYPTFS_ENCRYPTED}
+	{0x00000002, ECRYPTFS_ENCRYPTED},
+	{0x00000004, ECRYPTFS_METADATA_IN_XATTR}
 };
 
 /**
@@ -1052,11 +1072,9 @@ static int ecryptfs_process_flags(struct ecryptfs_crypt_stat *crypt_stat,
 	for (i = 0; i < ((sizeof(ecryptfs_flag_map)
 			  / sizeof(struct ecryptfs_flag_map_elem))); i++)
 		if (flags & ecryptfs_flag_map[i].file_flag) {
-			ECRYPTFS_SET_FLAG(crypt_stat->flags,
-					  ecryptfs_flag_map[i].local_flag);
+			crypt_stat->flags |= ecryptfs_flag_map[i].local_flag;
 		} else
-			ECRYPTFS_CLEAR_FLAG(crypt_stat->flags,
-					    ecryptfs_flag_map[i].local_flag);
+			crypt_stat->flags &= ~(ecryptfs_flag_map[i].local_flag);
 	/* Version is in top 8 bits of the 32-bit flag vector */
 	crypt_stat->file_version = ((flags >> 24) & 0xFF);
 	(*bytes_read) = 4;
@@ -1093,8 +1111,7 @@ write_ecryptfs_flags(char *page_virt, struct ecryptfs_crypt_stat *crypt_stat,
 
 	for (i = 0; i < ((sizeof(ecryptfs_flag_map)
 			  / sizeof(struct ecryptfs_flag_map_elem))); i++)
-		if (ECRYPTFS_CHECK_FLAG(crypt_stat->flags,
-					ecryptfs_flag_map[i].local_flag))
+		if (crypt_stat->flags & ecryptfs_flag_map[i].local_flag)
 			flags |= ecryptfs_flag_map[i].file_flag;
 	/* Version is in top 8 bits of the 32-bit flag vector */
 	flags |= ((((u8)crypt_stat->file_version) << 24) & 0xFF000000);
@@ -1189,8 +1206,8 @@ int ecryptfs_cipher_code_to_string(char *str, u16 cipher_code)
  *
  * Returns zero on success; non-zero otherwise
  */
-int ecryptfs_read_header_region(char *data, struct dentry *dentry,
-				struct vfsmount *mnt)
+static int ecryptfs_read_header_region(char *data, struct dentry *dentry,
+				       struct vfsmount *mnt)
 {
 	struct file *lower_file;
 	mm_segment_t oldfs;
@@ -1219,9 +1236,25 @@ out:
 	return rc;
 }
 
-static void
-write_header_metadata(char *virt, struct ecryptfs_crypt_stat *crypt_stat,
-		      size_t *written)
+int ecryptfs_read_and_validate_header_region(char *data, struct dentry *dentry,
+					     struct vfsmount *mnt)
+{
+	int rc;
+
+	rc = ecryptfs_read_header_region(data, dentry, mnt);
+	if (rc)
+		goto out;
+	if (!contains_ecryptfs_marker(data + ECRYPTFS_FILE_SIZE_BYTES))
+		rc = -EINVAL;
+out:
+	return rc;
+}
+
+
+void
+ecryptfs_write_header_metadata(char *virt,
+			       struct ecryptfs_crypt_stat *crypt_stat,
+			       size_t *written)
 {
 	u32 header_extent_size;
 	u16 num_header_extents_at_front;
@@ -1270,9 +1303,9 @@ struct kmem_cache *ecryptfs_header_cache_2;
  *
  * Returns zero on success
  */
-int ecryptfs_write_headers_virt(char *page_virt,
-				struct ecryptfs_crypt_stat *crypt_stat,
-				struct dentry *ecryptfs_dentry)
+static int ecryptfs_write_headers_virt(char *page_virt, size_t *size,
+				       struct ecryptfs_crypt_stat *crypt_stat,
+				       struct dentry *ecryptfs_dentry)
 {
 	int rc;
 	size_t written;
@@ -1283,7 +1316,8 @@ int ecryptfs_write_headers_virt(char *page_virt,
 	offset += written;
 	write_ecryptfs_flags((page_virt + offset), crypt_stat, &written);
 	offset += written;
-	write_header_metadata((page_virt + offset), crypt_stat, &written);
+	ecryptfs_write_header_metadata((page_virt + offset), crypt_stat,
+				       &written);
 	offset += written;
 	rc = ecryptfs_generate_key_packet_set((page_virt + offset), crypt_stat,
 					      ecryptfs_dentry, &written,
@@ -1291,11 +1325,70 @@ int ecryptfs_write_headers_virt(char *page_virt,
 	if (rc)
 		ecryptfs_printk(KERN_WARNING, "Error generating key packet "
 				"set; rc = [%d]\n", rc);
+	if (size) {
+		offset += written;
+		*size = offset;
+	}
+	return rc;
+}
+
+static int ecryptfs_write_metadata_to_contents(struct ecryptfs_crypt_stat *crypt_stat,
+					       struct file *lower_file,
+					       char *page_virt)
+{
+	mm_segment_t oldfs;
+	int current_header_page;
+	int header_pages;
+	ssize_t size;
+	int rc = 0;
+
+	lower_file->f_pos = 0;
+	oldfs = get_fs();
+	set_fs(get_ds());
+	size = vfs_write(lower_file, (char __user *)page_virt, PAGE_CACHE_SIZE,
+			 &lower_file->f_pos);
+	if (size < 0) {
+		rc = (int)size;
+		printk(KERN_ERR "Error attempting to write lower page; "
+		       "rc = [%d]\n", rc);
+		set_fs(oldfs);
+		goto out;
+	}
+	header_pages = ((crypt_stat->header_extent_size
+			 * crypt_stat->num_header_extents_at_front)
+			/ PAGE_CACHE_SIZE);
+	memset(page_virt, 0, PAGE_CACHE_SIZE);
+	current_header_page = 1;
+	while (current_header_page < header_pages) {
+		size = vfs_write(lower_file, (char __user *)page_virt,
+				 PAGE_CACHE_SIZE, &lower_file->f_pos);
+		if (size < 0) {
+			rc = (int)size;
+			printk(KERN_ERR "Error attempting to write lower page; "
+			       "rc = [%d]\n", rc);
+			set_fs(oldfs);
+			goto out;
+		}
+		current_header_page++;
+	}
+	set_fs(oldfs);
+out:
+	return rc;
+}
+
+static int ecryptfs_write_metadata_to_xattr(struct dentry *ecryptfs_dentry,
+					    struct ecryptfs_crypt_stat *crypt_stat,
+					    char *page_virt, size_t size)
+{
+	int rc;
+
+	rc = ecryptfs_setxattr(ecryptfs_dentry, ECRYPTFS_XATTR_NAME, page_virt,
+			       size, 0);
 	return rc;
 }
 
 /**
- * ecryptfs_write_headers
+ * ecryptfs_write_metadata
  * @lower_file: The lower file struct, which was returned from dentry_open
  *
  * Write the file headers out.  This will likely involve a userspace
@@ -1306,22 +1399,18 @@ int ecryptfs_write_headers_virt(char *page_virt,
  *
  * Returns zero on success; non-zero on error
  */
-int ecryptfs_write_headers(struct dentry *ecryptfs_dentry,
-			   struct file *lower_file)
+int ecryptfs_write_metadata(struct dentry *ecryptfs_dentry,
+			    struct file *lower_file)
 {
-	mm_segment_t oldfs;
 	struct ecryptfs_crypt_stat *crypt_stat;
 	char *page_virt;
-	int current_header_page;
-	int header_pages;
+	size_t size;
 	int rc = 0;
 
 	crypt_stat = &ecryptfs_inode_to_private(
 		ecryptfs_dentry->d_inode)->crypt_stat;
-	if (likely(ECRYPTFS_CHECK_FLAG(crypt_stat->flags,
-				       ECRYPTFS_ENCRYPTED))) {
-		if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags,
-					 ECRYPTFS_KEY_VALID)) {
+	if (likely(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
+		if (!(crypt_stat->flags & ECRYPTFS_KEY_VALID)) {
 			ecryptfs_printk(KERN_DEBUG, "Key is "
 					"invalid; bailing out\n");
 			rc = -EINVAL;
@@ -1334,54 +1423,42 @@ int ecryptfs_write_headers(struct dentry *ecryptfs_dentry,
 		goto out;
 	}
 	/* Released in this function */
-	page_virt = kmem_cache_alloc(ecryptfs_header_cache_0, GFP_USER);
+	page_virt = kmem_cache_zalloc(ecryptfs_header_cache_0, GFP_USER);
 	if (!page_virt) {
 		ecryptfs_printk(KERN_ERR, "Out of memory\n");
 		rc = -ENOMEM;
 		goto out;
 	}
-	memset(page_virt, 0, PAGE_CACHE_SIZE);
-	rc = ecryptfs_write_headers_virt(page_virt, crypt_stat,
-					 ecryptfs_dentry);
+	rc = ecryptfs_write_headers_virt(page_virt, &size, crypt_stat,
+  					 ecryptfs_dentry);
 	if (unlikely(rc)) {
 		ecryptfs_printk(KERN_ERR, "Error whilst writing headers\n");
 		memset(page_virt, 0, PAGE_CACHE_SIZE);
 		goto out_free;
 	}
-	ecryptfs_printk(KERN_DEBUG,
-			"Writing key packet set to underlying file\n");
-	lower_file->f_pos = 0;
-	oldfs = get_fs();
-	set_fs(get_ds());
-	ecryptfs_printk(KERN_DEBUG, "Calling lower_file->f_op->"
-			"write() w/ header page; lower_file->f_pos = "
-			"[0x%.16x]\n", lower_file->f_pos);
-	lower_file->f_op->write(lower_file, (char __user *)page_virt,
-				PAGE_CACHE_SIZE, &lower_file->f_pos);
-	header_pages = ((crypt_stat->header_extent_size
-			 * crypt_stat->num_header_extents_at_front)
-			/ PAGE_CACHE_SIZE);
-	memset(page_virt, 0, PAGE_CACHE_SIZE);
-	current_header_page = 1;
-	while (current_header_page < header_pages) {
-		ecryptfs_printk(KERN_DEBUG, "Calling lower_file->f_op->"
-				"write() w/ zero'd page; lower_file->f_pos = "
-				"[0x%.16x]\n", lower_file->f_pos);
-		lower_file->f_op->write(lower_file, (char __user *)page_virt,
-					PAGE_CACHE_SIZE, &lower_file->f_pos);
-		current_header_page++;
+	if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR)
+		rc = ecryptfs_write_metadata_to_xattr(ecryptfs_dentry,
+						      crypt_stat, page_virt,
+						      size);
+	else
+		rc = ecryptfs_write_metadata_to_contents(crypt_stat, lower_file,
+							 page_virt);
+	if (rc) {
+		printk(KERN_ERR "Error writing metadata out to lower file; "
+		       "rc = [%d]\n", rc);
+		goto out_free;
 	}
-	set_fs(oldfs);
-	ecryptfs_printk(KERN_DEBUG,
-			"Done writing key packet set to underlying file.\n");
 out_free:
 	kmem_cache_free(ecryptfs_header_cache_0, page_virt);
 out:
 	return rc;
 }
 
+#define ECRYPTFS_DONT_VALIDATE_HEADER_SIZE 0
+#define ECRYPTFS_VALIDATE_HEADER_SIZE 1
 static int parse_header_metadata(struct ecryptfs_crypt_stat *crypt_stat,
-				 char *virt, int *bytes_read)
+				 char *virt, int *bytes_read,
+				 int validate_header_size)
 {
 	int rc = 0;
 	u32 header_extent_size;
@@ -1396,9 +1473,10 @@ static int parse_header_metadata(struct ecryptfs_crypt_stat *crypt_stat,
 	crypt_stat->num_header_extents_at_front =
 		(int)num_header_extents_at_front;
 	(*bytes_read) = 6;
-	if ((crypt_stat->header_extent_size
-	     * crypt_stat->num_header_extents_at_front)
-	    < ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE) {
+	if ((validate_header_size == ECRYPTFS_VALIDATE_HEADER_SIZE)
+	    && ((crypt_stat->header_extent_size
+		 * crypt_stat->num_header_extents_at_front)
+		< ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE)) {
 		rc = -EINVAL;
 		ecryptfs_printk(KERN_WARNING, "Invalid header extent size: "
 				"[%d]\n", crypt_stat->header_extent_size);
@@ -1429,7 +1507,8 @@ static void set_default_header_data(struct ecryptfs_crypt_stat *crypt_stat)
  */
 static int ecryptfs_read_headers_virt(char *page_virt,
 				      struct ecryptfs_crypt_stat *crypt_stat,
-				      struct dentry *ecryptfs_dentry)
+				      struct dentry *ecryptfs_dentry,
+				      int validate_header_size)
 {
 	int rc = 0;
 	int offset;
@@ -1463,7 +1542,7 @@ static int ecryptfs_read_headers_virt(char *page_virt,
 	offset += bytes_read;
 	if (crypt_stat->file_version >= 1) {
 		rc = parse_header_metadata(crypt_stat, (page_virt + offset),
-					   &bytes_read);
+					   &bytes_read, validate_header_size);
 		if (rc) {
 			ecryptfs_printk(KERN_WARNING, "Error reading header "
 					"metadata; rc = [%d]\n", rc);
@@ -1478,12 +1557,60 @@ out:
 }
 
 /**
- * ecryptfs_read_headers
+ * ecryptfs_read_xattr_region
+ *
+ * Attempts to read the crypto metadata from the extended attribute
+ * region of the lower file.
+ */
+int ecryptfs_read_xattr_region(char *page_virt, struct dentry *ecryptfs_dentry)
+{
+	ssize_t size;
+	int rc = 0;
+
+	size = ecryptfs_getxattr(ecryptfs_dentry, ECRYPTFS_XATTR_NAME,
+				 page_virt, ECRYPTFS_DEFAULT_EXTENT_SIZE);
+	if (size < 0) {
+		printk(KERN_DEBUG "Error attempting to read the [%s] "
+		       "xattr from the lower file; return value = [%zd]\n",
+		       ECRYPTFS_XATTR_NAME, size);
+		rc = -EINVAL;
+		goto out;
+	}
+out:
+	return rc;
+}
+
+int ecryptfs_read_and_validate_xattr_region(char *page_virt,
+					    struct dentry *ecryptfs_dentry)
+{
+	int rc;
+
+	rc = ecryptfs_read_xattr_region(page_virt, ecryptfs_dentry);
+	if (rc)
+		goto out;
+	if (!contains_ecryptfs_marker(page_virt	+ ECRYPTFS_FILE_SIZE_BYTES)) {
+		printk(KERN_WARNING "Valid data found in [%s] xattr, but "
+			"the marker is invalid\n", ECRYPTFS_XATTR_NAME);
+		rc = -EINVAL;
+	}
+out:
+	return rc;
+}
+
+/**
+ * ecryptfs_read_metadata
+ *
+ * Common entry point for reading file metadata. From here, we could
+ * retrieve the header information from the header region of the file,
+ * the xattr region of the file, or some other repostory that is
+ * stored separately from the file itself. The current implementation
+ * supports retrieving the metadata information from the file contents
+ * and from the xattr region.
  *
  * Returns zero if valid headers found and parsed; non-zero otherwise
  */
-int ecryptfs_read_headers(struct dentry *ecryptfs_dentry,
-			  struct file *lower_file)
+int ecryptfs_read_metadata(struct dentry *ecryptfs_dentry,
+			   struct file *lower_file)
 {
 	int rc = 0;
 	char *page_virt = NULL;
@@ -1491,7 +1618,12 @@ int ecryptfs_read_headers(struct dentry *ecryptfs_dentry,
 	ssize_t bytes_read;
 	struct ecryptfs_crypt_stat *crypt_stat =
 	    &ecryptfs_inode_to_private(ecryptfs_dentry->d_inode)->crypt_stat;
+	struct ecryptfs_mount_crypt_stat *mount_crypt_stat =
+		&ecryptfs_superblock_to_private(
+			ecryptfs_dentry->d_sb)->mount_crypt_stat;
 
+	ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat,
+						      mount_crypt_stat);
 	/* Read the first page from the underlying file */
 	page_virt = kmem_cache_alloc(ecryptfs_header_cache_1, GFP_USER);
 	if (!page_virt) {
@@ -1512,11 +1644,36 @@ int ecryptfs_read_headers(struct dentry *ecryptfs_dentry,
 		goto out;
 	}
 	rc = ecryptfs_read_headers_virt(page_virt, crypt_stat,
-					ecryptfs_dentry);
+					ecryptfs_dentry,
+					ECRYPTFS_VALIDATE_HEADER_SIZE);
 	if (rc) {
-		ecryptfs_printk(KERN_DEBUG, "Valid eCryptfs headers not "
-				"found\n");
-		rc = -EINVAL;
+		rc = ecryptfs_read_xattr_region(page_virt,
+						ecryptfs_dentry);
+		if (rc) {
+			printk(KERN_DEBUG "Valid eCryptfs headers not found in "
+			       "file header region or xattr region\n");
+			rc = -EINVAL;
+			goto out;
+		}
+		rc = ecryptfs_read_headers_virt(page_virt, crypt_stat,
+						ecryptfs_dentry,
+						ECRYPTFS_DONT_VALIDATE_HEADER_SIZE);
+		if (rc) {
+			printk(KERN_DEBUG "Valid eCryptfs headers not found in "
+			       "file xattr region either\n");
+			rc = -EINVAL;
+		}
+		if (crypt_stat->mount_crypt_stat->flags
+		    & ECRYPTFS_XATTR_METADATA_ENABLED) {
+			crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR;
+		} else {
+			printk(KERN_WARNING "Attempt to access file with "
+			       "crypto metadata only in the extended attribute "
+			       "region, but eCryptfs was mounted without "
+			       "xattr support enabled. eCryptfs will not treat "
+			       "this like an encrypted file.\n");
+			rc = -EINVAL;
+		}
 	}
 out:
 	if (page_virt) {
diff --git a/fs/ecryptfs/debug.c b/fs/ecryptfs/debug.c
index 61f8e89..434c7ef 100644
--- a/fs/ecryptfs/debug.c
+++ b/fs/ecryptfs/debug.c
@@ -36,7 +36,7 @@ void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok)
 
 	ecryptfs_printk(KERN_DEBUG, "Auth tok at mem loc [%p]:\n",
 			auth_tok);
-	if (ECRYPTFS_CHECK_FLAG(auth_tok->flags, ECRYPTFS_PRIVATE_KEY)) {
+	if (auth_tok->flags & ECRYPTFS_PRIVATE_KEY) {
 		ecryptfs_printk(KERN_DEBUG, " * private key type\n");
 		ecryptfs_printk(KERN_DEBUG, " * (NO PRIVATE KEY SUPPORT "
 				"IN ECRYPTFS VERSION 0.1)\n");
@@ -46,8 +46,8 @@ void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok)
 				ECRYPTFS_SALT_SIZE);
 		salt[ECRYPTFS_SALT_SIZE * 2] = '\0';
 		ecryptfs_printk(KERN_DEBUG, " * salt = [%s]\n", salt);
-		if (ECRYPTFS_CHECK_FLAG(auth_tok->token.password.flags,
-					ECRYPTFS_PERSISTENT_PASSWORD)) {
+		if (auth_tok->token.password.flags &
+		    ECRYPTFS_PERSISTENT_PASSWORD) {
 			ecryptfs_printk(KERN_DEBUG, " * persistent\n");
 		}
 		memcpy(sig, auth_tok->token.password.signature,
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index afb64bd..b3609b7 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -4,8 +4,10 @@
  *
  * Copyright (C) 1997-2003 Erez Zadok
  * Copyright (C) 2001-2003 Stony Brook University
- * Copyright (C) 2004-2006 International Business Machines Corp.
+ * Copyright (C) 2004-2007 International Business Machines Corp.
  *   Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
+ *              Trevor S. Highland <trevor.highland@gmail.com>
+ *              Tyler Hicks <tyhicks@ou.edu>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -31,22 +33,25 @@
 #include <linux/fs_stack.h>
 #include <linux/namei.h>
 #include <linux/scatterlist.h>
+#include <linux/hash.h>
 
 /* Version verification for shared data structures w/ userspace */
 #define ECRYPTFS_VERSION_MAJOR 0x00
 #define ECRYPTFS_VERSION_MINOR 0x04
-#define ECRYPTFS_SUPPORTED_FILE_VERSION 0x01
+#define ECRYPTFS_SUPPORTED_FILE_VERSION 0x02
 /* These flags indicate which features are supported by the kernel
  * module; userspace tools such as the mount helper read
  * ECRYPTFS_VERSIONING_MASK from a sysfs handle in order to determine
  * how to behave. */
-#define ECRYPTFS_VERSIONING_PASSPHRASE 0x00000001
-#define ECRYPTFS_VERSIONING_PUBKEY 0x00000002
+#define ECRYPTFS_VERSIONING_PASSPHRASE            0x00000001
+#define ECRYPTFS_VERSIONING_PUBKEY                0x00000002
 #define ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH 0x00000004
-#define ECRYPTFS_VERSIONING_POLICY 0x00000008
+#define ECRYPTFS_VERSIONING_POLICY                0x00000008
+#define ECRYPTFS_VERSIONING_XATTR                 0x00000010
 #define ECRYPTFS_VERSIONING_MASK (ECRYPTFS_VERSIONING_PASSPHRASE \
-                                  | ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH)
-
+				  | ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH \
+				  | ECRYPTFS_VERSIONING_PUBKEY \
+				  | ECRYPTFS_VERSIONING_XATTR)
 #define ECRYPTFS_MAX_PASSWORD_LENGTH 64
 #define ECRYPTFS_MAX_PASSPHRASE_BYTES ECRYPTFS_MAX_PASSWORD_LENGTH
 #define ECRYPTFS_SALT_SIZE 8
@@ -60,10 +65,25 @@
 #define ECRYPTFS_MAX_KEY_BYTES 64
 #define ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES 512
 #define ECRYPTFS_DEFAULT_IV_BYTES 16
-#define ECRYPTFS_FILE_VERSION 0x01
+#define ECRYPTFS_FILE_VERSION 0x02
 #define ECRYPTFS_DEFAULT_HEADER_EXTENT_SIZE 8192
 #define ECRYPTFS_DEFAULT_EXTENT_SIZE 4096
 #define ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE 8192
+#define ECRYPTFS_DEFAULT_MSG_CTX_ELEMS 32
+#define ECRYPTFS_DEFAULT_SEND_TIMEOUT HZ
+#define ECRYPTFS_MAX_MSG_CTX_TTL (HZ*3)
+#define ECRYPTFS_NLMSG_HELO 100
+#define ECRYPTFS_NLMSG_QUIT 101
+#define ECRYPTFS_NLMSG_REQUEST 102
+#define ECRYPTFS_NLMSG_RESPONSE 103
+#define ECRYPTFS_MAX_PKI_NAME_BYTES 16
+#define ECRYPTFS_DEFAULT_NUM_USERS 4
+#define ECRYPTFS_MAX_NUM_USERS 32768
+#define ECRYPTFS_TRANSPORT_NETLINK 0
+#define ECRYPTFS_TRANSPORT_CONNECTOR 1
+#define ECRYPTFS_TRANSPORT_RELAYFS 2
+#define ECRYPTFS_DEFAULT_TRANSPORT ECRYPTFS_TRANSPORT_NETLINK
+#define ECRYPTFS_XATTR_NAME "user.ecryptfs"
 
 #define RFC2440_CIPHER_DES3_EDE 0x02
 #define RFC2440_CIPHER_CAST_5 0x03
@@ -74,9 +94,7 @@
 #define RFC2440_CIPHER_TWOFISH 0x0a
 #define RFC2440_CIPHER_CAST_6 0x0b
 
-#define ECRYPTFS_SET_FLAG(flag_bit_vector, flag) (flag_bit_vector |= (flag))
-#define ECRYPTFS_CLEAR_FLAG(flag_bit_vector, flag) (flag_bit_vector &= ~(flag))
-#define ECRYPTFS_CHECK_FLAG(flag_bit_vector, flag) (flag_bit_vector & (flag))
+#define RFC2440_CIPHER_RSA 0x01
 
 /**
  * For convenience, we may need to pass around the encrypted session
@@ -114,6 +132,14 @@ struct ecryptfs_password {
 
 enum ecryptfs_token_types {ECRYPTFS_PASSWORD, ECRYPTFS_PRIVATE_KEY};
 
+struct ecryptfs_private_key {
+	u32 key_size;
+	u32 data_len;
+	u8 signature[ECRYPTFS_PASSWORD_SIG_SIZE + 1];
+	char pki_type[ECRYPTFS_MAX_PKI_NAME_BYTES + 1];
+	u8 data[];
+};
+
 /* May be a password or a private key */
 struct ecryptfs_auth_tok {
 	u16 version; /* 8-bit major and 8-bit minor */
@@ -123,7 +149,7 @@ struct ecryptfs_auth_tok {
 	u8 reserved[32];
 	union {
 		struct ecryptfs_password password;
-		/* Private key is in future eCryptfs releases */
+		struct ecryptfs_private_key private_key;
 	} token;
 } __attribute__ ((packed));
 
@@ -176,10 +202,14 @@ ecryptfs_get_key_payload_data(struct key *key)
 #define ECRYPTFS_FILE_SIZE_BYTES 8
 #define ECRYPTFS_DEFAULT_CIPHER "aes"
 #define ECRYPTFS_DEFAULT_KEY_BYTES 16
-#define ECRYPTFS_DEFAULT_CHAINING_MODE CRYPTO_TFM_MODE_CBC
 #define ECRYPTFS_DEFAULT_HASH "md5"
+#define ECRYPTFS_TAG_1_PACKET_TYPE 0x01
 #define ECRYPTFS_TAG_3_PACKET_TYPE 0x8C
 #define ECRYPTFS_TAG_11_PACKET_TYPE 0xED
+#define ECRYPTFS_TAG_64_PACKET_TYPE 0x40
+#define ECRYPTFS_TAG_65_PACKET_TYPE 0x41
+#define ECRYPTFS_TAG_66_PACKET_TYPE 0x42
+#define ECRYPTFS_TAG_67_PACKET_TYPE 0x43
 #define MD5_DIGEST_SIZE 16
 
 /**
@@ -196,6 +226,8 @@ struct ecryptfs_crypt_stat {
 #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
 	u32 flags;
 	unsigned int file_version;
 	size_t iv_bytes;
@@ -242,6 +274,8 @@ struct ecryptfs_dentry_info {
 struct ecryptfs_mount_crypt_stat {
 	/* Pointers to memory we do not own, do not free these */
 #define ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED 0x00000001
+#define ECRYPTFS_XATTR_METADATA_ENABLED        0x00000002
+#define ECRYPTFS_ENCRYPTED_VIEW_ENABLED        0x00000004
 	u32 flags;
 	struct ecryptfs_auth_tok *global_auth_tok;
 	struct key *global_auth_tok_key;
@@ -272,6 +306,33 @@ struct ecryptfs_auth_tok_list_item {
 	struct ecryptfs_auth_tok auth_tok;
 };
 
+struct ecryptfs_message {
+	u32 index;
+	u32 data_len;
+	u8 data[];
+};
+
+struct ecryptfs_msg_ctx {
+#define ECRYPTFS_MSG_CTX_STATE_FREE      0x0001
+#define ECRYPTFS_MSG_CTX_STATE_PENDING   0x0002
+#define ECRYPTFS_MSG_CTX_STATE_DONE      0x0003
+	u32 state;
+	unsigned int index;
+	unsigned int counter;
+	struct ecryptfs_message *msg;
+	struct task_struct *task;
+	struct list_head node;
+	struct mutex mux;
+};
+
+extern unsigned int ecryptfs_transport;
+
+struct ecryptfs_daemon_id {
+	pid_t pid;
+	uid_t uid;
+	struct hlist_node id_chain;
+};
+
 static inline struct ecryptfs_file_info *
 ecryptfs_file_to_private(struct file *file)
 {
@@ -385,13 +446,16 @@ void __ecryptfs_printk(const char *fmt, ...);
 
 extern const struct file_operations ecryptfs_main_fops;
 extern const struct file_operations ecryptfs_dir_fops;
-extern struct inode_operations ecryptfs_main_iops;
-extern struct inode_operations ecryptfs_dir_iops;
-extern struct inode_operations ecryptfs_symlink_iops;
-extern struct super_operations ecryptfs_sops;
+extern const struct inode_operations ecryptfs_main_iops;
+extern const struct inode_operations ecryptfs_dir_iops;
+extern const struct inode_operations ecryptfs_symlink_iops;
+extern const struct super_operations ecryptfs_sops;
 extern struct dentry_operations ecryptfs_dops;
 extern struct address_space_operations ecryptfs_aops;
 extern int ecryptfs_verbosity;
+extern unsigned int ecryptfs_message_buf_len;
+extern signed long ecryptfs_message_wait_timeout;
+extern unsigned int ecryptfs_number_of_users;
 
 extern struct kmem_cache *ecryptfs_auth_tok_list_item_cache;
 extern struct kmem_cache *ecryptfs_file_info_cache;
@@ -401,6 +465,7 @@ extern struct kmem_cache *ecryptfs_sb_info_cache;
 extern struct kmem_cache *ecryptfs_header_cache_0;
 extern struct kmem_cache *ecryptfs_header_cache_1;
 extern struct kmem_cache *ecryptfs_header_cache_2;
+extern struct kmem_cache *ecryptfs_xattr_cache;
 extern struct kmem_cache *ecryptfs_lower_page_cache;
 
 int ecryptfs_interpose(struct dentry *hidden_dentry,
@@ -427,9 +492,13 @@ int ecryptfs_init_crypt_ctx(struct ecryptfs_crypt_stat *crypt_stat);
 int ecryptfs_crypto_api_algify_cipher_name(char **algified_name,
 					   char *cipher_name,
 					   char *chaining_modifier);
-int ecryptfs_write_inode_size_to_header(struct file *lower_file,
-					struct inode *lower_inode,
-					struct inode *inode);
+#define ECRYPTFS_LOWER_I_MUTEX_NOT_HELD 0
+#define ECRYPTFS_LOWER_I_MUTEX_HELD 1
+int ecryptfs_write_inode_size_to_metadata(struct file *lower_file,
+					  struct inode *lower_inode,
+					  struct inode *inode,
+					  struct dentry *ecryptfs_dentry,
+					  int lower_i_mutex_held);
 int ecryptfs_get_lower_page(struct page **lower_page, struct inode *lower_inode,
 			    struct file *lower_file,
 			    unsigned long lower_page_index, int byte_offset,
@@ -442,26 +511,20 @@ int ecryptfs_copy_page_to_lower(struct page *page, struct inode *lower_inode,
 				struct file *lower_file);
 int ecryptfs_do_readpage(struct file *file, struct page *page,
 			 pgoff_t lower_page_index);
-int ecryptfs_grab_and_map_lower_page(struct page **lower_page,
-				     char **lower_virt,
-				     struct inode *lower_inode,
-				     unsigned long lower_page_index);
 int ecryptfs_writepage_and_release_lower_page(struct page *lower_page,
 					      struct inode *lower_inode,
 					      struct writeback_control *wbc);
 int ecryptfs_encrypt_page(struct ecryptfs_page_crypt_context *ctx);
 int ecryptfs_decrypt_page(struct file *file, struct page *page);
-int ecryptfs_write_headers(struct dentry *ecryptfs_dentry,
+int ecryptfs_write_metadata(struct dentry *ecryptfs_dentry,
+			    struct file *lower_file);
+int ecryptfs_read_metadata(struct dentry *ecryptfs_dentry,
 			   struct file *lower_file);
-int ecryptfs_write_headers_virt(char *page_virt,
-				struct ecryptfs_crypt_stat *crypt_stat,
-				struct dentry *ecryptfs_dentry);
-int ecryptfs_read_headers(struct dentry *ecryptfs_dentry,
-			  struct file *lower_file);
 int ecryptfs_new_file_context(struct dentry *ecryptfs_dentry);
-int contains_ecryptfs_marker(char *data);
-int ecryptfs_read_header_region(char *data, struct dentry *dentry,
-				struct vfsmount *mnt);
+int ecryptfs_read_and_validate_header_region(char *data, struct dentry *dentry,
+					     struct vfsmount *mnt);
+int ecryptfs_read_and_validate_xattr_region(char *page_virt,
+					    struct dentry *ecryptfs_dentry);
 u16 ecryptfs_code_for_cipher_string(struct ecryptfs_crypt_stat *crypt_stat);
 int ecryptfs_cipher_code_to_string(char *str, u16 cipher_code);
 void ecryptfs_set_default_sizes(struct ecryptfs_crypt_stat *crypt_stat);
@@ -484,5 +547,37 @@ int ecryptfs_open_lower_file(struct file **lower_file,
 			     struct dentry *lower_dentry,
 			     struct vfsmount *lower_mnt, int flags);
 int ecryptfs_close_lower_file(struct file *lower_file);
+ssize_t ecryptfs_getxattr(struct dentry *dentry, const char *name, void *value,
+			  size_t size);
+int
+ecryptfs_setxattr(struct dentry *dentry, const char *name, const void *value,
+		  size_t size, int flags);
+int ecryptfs_read_xattr_region(char *page_virt, struct dentry *ecryptfs_dentry);
+int ecryptfs_process_helo(unsigned int transport, uid_t uid, pid_t pid);
+int ecryptfs_process_quit(uid_t uid, pid_t pid);
+int ecryptfs_process_response(struct ecryptfs_message *msg, uid_t uid,
+			      pid_t pid, u32 seq);
+int ecryptfs_send_message(unsigned int transport, char *data, int data_len,
+			  struct ecryptfs_msg_ctx **msg_ctx);
+int ecryptfs_wait_for_response(struct ecryptfs_msg_ctx *msg_ctx,
+			       struct ecryptfs_message **emsg);
+int ecryptfs_init_messaging(unsigned int transport);
+void ecryptfs_release_messaging(unsigned int transport);
+
+int ecryptfs_send_netlink(char *data, int data_len,
+			  struct ecryptfs_msg_ctx *msg_ctx, u16 msg_type,
+			  u16 msg_flags, pid_t daemon_pid);
+int ecryptfs_init_netlink(void);
+void ecryptfs_release_netlink(void);
+
+int ecryptfs_send_connector(char *data, int data_len,
+			    struct ecryptfs_msg_ctx *msg_ctx, u16 msg_type,
+			    u16 msg_flags, pid_t daemon_pid);
+int ecryptfs_init_connector(void);
+void ecryptfs_release_connector(void);
+void
+ecryptfs_write_header_metadata(char *virt,
+			       struct ecryptfs_crypt_stat *crypt_stat,
+			       size_t *written);
 
 #endif /* #ifndef ECRYPTFS_KERNEL_H */
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index c5a2e52..bd969ad 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1997-2004 Erez Zadok
  * Copyright (C) 2001-2004 Stony Brook University
- * Copyright (C) 2004-2006 International Business Machines Corp.
+ * Copyright (C) 2004-2007 International Business Machines Corp.
  *   Author(s): Michael A. Halcrow <mhalcrow@us.ibm.com>
  *   		Michael C. Thompson <mcthomps@us.ibm.com>
  *
@@ -250,8 +250,19 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
 	struct ecryptfs_file_info *file_info;
 	int lower_flags;
 
+	mount_crypt_stat = &ecryptfs_superblock_to_private(
+		ecryptfs_dentry->d_sb)->mount_crypt_stat;
+	if ((mount_crypt_stat->flags & ECRYPTFS_ENCRYPTED_VIEW_ENABLED)
+	    && ((file->f_flags & O_WRONLY) || (file->f_flags & O_RDWR)
+		|| (file->f_flags & O_CREAT) || (file->f_flags & O_TRUNC)
+		|| (file->f_flags & O_APPEND))) {
+		printk(KERN_WARNING "Mount has encrypted view enabled; "
+		       "files may only be read\n");
+		rc = -EPERM;
+		goto out;
+	}
 	/* Released in ecryptfs_release or end of function if failure */
-	file_info = kmem_cache_alloc(ecryptfs_file_info_cache, GFP_KERNEL);
+	file_info = kmem_cache_zalloc(ecryptfs_file_info_cache, GFP_KERNEL);
 	ecryptfs_set_file_private(file, file_info);
 	if (!file_info) {
 		ecryptfs_printk(KERN_ERR,
@@ -259,17 +270,14 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
 		rc = -ENOMEM;
 		goto out;
 	}
-	memset(file_info, 0, sizeof(*file_info));
 	lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
 	crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat;
-	mount_crypt_stat = &ecryptfs_superblock_to_private(
-		ecryptfs_dentry->d_sb)->mount_crypt_stat;
 	mutex_lock(&crypt_stat->cs_mutex);
-	if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_POLICY_APPLIED)) {
+	if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED)) {
 		ecryptfs_printk(KERN_DEBUG, "Setting flags for stat...\n");
 		/* Policy code enabled in future release */
-		ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_POLICY_APPLIED);
-		ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_ENCRYPTED);
+		crypt_stat->flags |= ECRYPTFS_POLICY_APPLIED;
+		crypt_stat->flags |= ECRYPTFS_ENCRYPTED;
 	}
 	mutex_unlock(&crypt_stat->cs_mutex);
 	lower_flags = file->f_flags;
@@ -289,31 +297,14 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
 	lower_inode = lower_dentry->d_inode;
 	if (S_ISDIR(ecryptfs_dentry->d_inode->i_mode)) {
 		ecryptfs_printk(KERN_DEBUG, "This is a directory\n");
-		ECRYPTFS_CLEAR_FLAG(crypt_stat->flags, ECRYPTFS_ENCRYPTED);
+		crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
 		rc = 0;
 		goto out;
 	}
 	mutex_lock(&crypt_stat->cs_mutex);
-	if (i_size_read(lower_inode) < ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE) {
-		if (!(mount_crypt_stat->flags
-		      & ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED)) {
-			rc = -EIO;
-			printk(KERN_WARNING "Attempt to read file that is "
-			       "not in a valid eCryptfs format, and plaintext "
-			       "passthrough mode is not enabled; returning "
-			       "-EIO\n");
-			mutex_unlock(&crypt_stat->cs_mutex);
-			goto out_puts;
-		}
-		crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
-		rc = 0;
-		mutex_unlock(&crypt_stat->cs_mutex);
-		goto out;
-	} else if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags,
-					ECRYPTFS_POLICY_APPLIED)
-		   || !ECRYPTFS_CHECK_FLAG(crypt_stat->flags,
-					   ECRYPTFS_KEY_VALID)) {
-		rc = ecryptfs_read_headers(ecryptfs_dentry, lower_file);
+	if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED)
+	    || !(crypt_stat->flags & ECRYPTFS_KEY_VALID)) {
+		rc = ecryptfs_read_metadata(ecryptfs_dentry, lower_file);
 		if (rc) {
 			ecryptfs_printk(KERN_DEBUG,
 					"Valid headers not found\n");
@@ -327,9 +318,8 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
 				mutex_unlock(&crypt_stat->cs_mutex);
 				goto out_puts;
 			}
-			ECRYPTFS_CLEAR_FLAG(crypt_stat->flags,
-					    ECRYPTFS_ENCRYPTED);
 			rc = 0;
+			crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
 			mutex_unlock(&crypt_stat->cs_mutex);
 			goto out;
 		}
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 11f5e50..9fa7e0b 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1997-2004 Erez Zadok
  * Copyright (C) 2001-2004 Stony Brook University
- * Copyright (C) 2004-2006 International Business Machines Corp.
+ * Copyright (C) 2004-2007 International Business Machines Corp.
  *   Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
  *              Michael C. Thompsion <mcthomps@us.ibm.com>
  *
@@ -161,17 +161,17 @@ static int grow_file(struct dentry *ecryptfs_dentry, struct file *lower_file,
 	ecryptfs_set_file_lower(&fake_file, lower_file);
 	rc = ecryptfs_fill_zeros(&fake_file, 1);
 	if (rc) {
-		ECRYPTFS_SET_FLAG(
-			ecryptfs_inode_to_private(inode)->crypt_stat.flags,
-			ECRYPTFS_SECURITY_WARNING);
+		ecryptfs_inode_to_private(inode)->crypt_stat.flags |=
+			ECRYPTFS_SECURITY_WARNING;
 		ecryptfs_printk(KERN_WARNING, "Error attempting to fill zeros "
 				"in file; rc = [%d]\n", rc);
 		goto out;
 	}
 	i_size_write(inode, 0);
-	ecryptfs_write_inode_size_to_header(lower_file, lower_inode, inode);
-	ECRYPTFS_SET_FLAG(ecryptfs_inode_to_private(inode)->crypt_stat.flags,
-			  ECRYPTFS_NEW_FILE);
+	ecryptfs_write_inode_size_to_metadata(lower_file, lower_inode, inode,
+					      ecryptfs_dentry,
+					      ECRYPTFS_LOWER_I_MUTEX_NOT_HELD);
+	ecryptfs_inode_to_private(inode)->crypt_stat.flags |= ECRYPTFS_NEW_FILE;
 out:
 	return rc;
 }
@@ -199,7 +199,7 @@ static int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry)
 			lower_dentry->d_name.name);
 	inode = ecryptfs_dentry->d_inode;
 	crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat;
-	lower_flags = ((O_CREAT | O_WRONLY | O_TRUNC) & O_ACCMODE) | O_RDWR;
+	lower_flags = ((O_CREAT | O_TRUNC) & O_ACCMODE) | O_RDWR;
 #if BITS_PER_LONG != 32
 	lower_flags |= O_LARGEFILE;
 #endif
@@ -214,10 +214,10 @@ static int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry)
 	lower_inode = lower_dentry->d_inode;
 	if (S_ISDIR(ecryptfs_dentry->d_inode->i_mode)) {
 		ecryptfs_printk(KERN_DEBUG, "This is a directory\n");
-		ECRYPTFS_CLEAR_FLAG(crypt_stat->flags, ECRYPTFS_ENCRYPTED);
+		crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
 		goto out_fput;
 	}
-	ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_NEW_FILE);
+	crypt_stat->flags |= ECRYPTFS_NEW_FILE;
 	ecryptfs_printk(KERN_DEBUG, "Initializing crypto context\n");
 	rc = ecryptfs_new_file_context(ecryptfs_dentry);
 	if (rc) {
@@ -225,7 +225,7 @@ static int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry)
 				"context\n");
 		goto out_fput;
 	}
-	rc = ecryptfs_write_headers(ecryptfs_dentry, lower_file);
+	rc = ecryptfs_write_metadata(ecryptfs_dentry, lower_file);
 	if (rc) {
 		ecryptfs_printk(KERN_DEBUG, "Error writing headers\n");
 		goto out_fput;
@@ -287,6 +287,7 @@ static struct dentry *ecryptfs_lookup(struct inode *dir, struct dentry *dentry,
 	char *encoded_name;
 	unsigned int encoded_namelen;
 	struct ecryptfs_crypt_stat *crypt_stat = NULL;
+	struct ecryptfs_mount_crypt_stat *mount_crypt_stat;
 	char *page_virt = NULL;
 	struct inode *lower_inode;
 	u64 file_size;
@@ -361,34 +362,44 @@ static struct dentry *ecryptfs_lookup(struct inode *dir, struct dentry *dentry,
 		goto out;
 	}
 	/* Released in this function */
-	page_virt =
-	    (char *)kmem_cache_alloc(ecryptfs_header_cache_2,
-				     GFP_USER);
+	page_virt = kmem_cache_zalloc(ecryptfs_header_cache_2,
+				      GFP_USER);
 	if (!page_virt) {
 		rc = -ENOMEM;
 		ecryptfs_printk(KERN_ERR,
 				"Cannot ecryptfs_kmalloc a page\n");
 		goto out_dput;
 	}
-	memset(page_virt, 0, PAGE_CACHE_SIZE);
-	rc = ecryptfs_read_header_region(page_virt, lower_dentry, nd->mnt);
 	crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
-	if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_POLICY_APPLIED))
+	if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED))
 		ecryptfs_set_default_sizes(crypt_stat);
+	rc = ecryptfs_read_and_validate_header_region(page_virt, lower_dentry,
+						      nd->mnt);
 	if (rc) {
-		rc = 0;
-		ecryptfs_printk(KERN_WARNING, "Error reading header region;"
-				" assuming unencrypted\n");
-	} else {
-		if (!contains_ecryptfs_marker(page_virt
-					      + ECRYPTFS_FILE_SIZE_BYTES)) {
+		rc = ecryptfs_read_and_validate_xattr_region(page_virt, dentry);
+		if (rc) {
+			printk(KERN_DEBUG "Valid metadata not found in header "
+			       "region or xattr region; treating file as "
+			       "unencrypted\n");
+			rc = 0;
 			kmem_cache_free(ecryptfs_header_cache_2, page_virt);
 			goto out;
 		}
+		crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR;
+	}
+	mount_crypt_stat = &ecryptfs_superblock_to_private(
+		dentry->d_sb)->mount_crypt_stat;
+	if (mount_crypt_stat->flags & ECRYPTFS_ENCRYPTED_VIEW_ENABLED) {
+		if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR)
+			file_size = (crypt_stat->header_extent_size
+				     + i_size_read(lower_dentry->d_inode));
+		else
+			file_size = i_size_read(lower_dentry->d_inode);
+	} else {
 		memcpy(&file_size, page_virt, sizeof(file_size));
 		file_size = be64_to_cpu(file_size);
-		i_size_write(dentry->d_inode, (loff_t)file_size);
 	}
+	i_size_write(dentry->d_inode, (loff_t)file_size);
 	kmem_cache_free(ecryptfs_header_cache_2, page_virt);
 	goto out;
 
@@ -782,20 +793,26 @@ int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
 			goto out_fput;
 		}
 		i_size_write(inode, new_length);
-		rc = ecryptfs_write_inode_size_to_header(lower_file,
-							 lower_dentry->d_inode,
-							 inode);
+		rc = ecryptfs_write_inode_size_to_metadata(
+			lower_file, lower_dentry->d_inode, inode, dentry,
+			ECRYPTFS_LOWER_I_MUTEX_NOT_HELD);
 		if (rc) {
-			ecryptfs_printk(KERN_ERR,
-					"Problem with ecryptfs_write"
-					"_inode_size\n");
+			printk(KERN_ERR	"Problem with "
+			       "ecryptfs_write_inode_size_to_metadata; "
+			       "rc = [%d]\n", rc);
 			goto out_fput;
 		}
 	} else { /* new_length < i_size_read(inode) */
 		vmtruncate(inode, new_length);
-		ecryptfs_write_inode_size_to_header(lower_file,
-						    lower_dentry->d_inode,
-						    inode);
+		rc = ecryptfs_write_inode_size_to_metadata(
+			lower_file, lower_dentry->d_inode, inode, dentry,
+			ECRYPTFS_LOWER_I_MUTEX_NOT_HELD);
+		if (rc) {
+			printk(KERN_ERR	"Problem with "
+			       "ecryptfs_write_inode_size_to_metadata; "
+			       "rc = [%d]\n", rc);
+			goto out_fput;
+		}
 		/* We are reducing the size of the ecryptfs file, and need to
 		 * know if we need to reduce the size of the lower file. */
 		lower_size_before_truncate =
@@ -882,7 +899,7 @@ out:
 	return rc;
 }
 
-static int
+int
 ecryptfs_setxattr(struct dentry *dentry, const char *name, const void *value,
 		  size_t size, int flags)
 {
@@ -902,7 +919,7 @@ out:
 	return rc;
 }
 
-static ssize_t
+ssize_t
 ecryptfs_getxattr(struct dentry *dentry, const char *name, void *value,
 		  size_t size)
 {
@@ -972,7 +989,7 @@ int ecryptfs_inode_set(struct inode *inode, void *lower_inode)
 	return 0;
 }
 
-struct inode_operations ecryptfs_symlink_iops = {
+const struct inode_operations ecryptfs_symlink_iops = {
 	.readlink = ecryptfs_readlink,
 	.follow_link = ecryptfs_follow_link,
 	.put_link = ecryptfs_put_link,
@@ -984,7 +1001,7 @@ struct inode_operations ecryptfs_symlink_iops = {
 	.removexattr = ecryptfs_removexattr
 };
 
-struct inode_operations ecryptfs_dir_iops = {
+const struct inode_operations ecryptfs_dir_iops = {
 	.create = ecryptfs_create,
 	.lookup = ecryptfs_lookup,
 	.link = ecryptfs_link,
@@ -1002,7 +1019,7 @@ struct inode_operations ecryptfs_dir_iops = {
 	.removexattr = ecryptfs_removexattr
 };
 
-struct inode_operations ecryptfs_main_iops = {
+const struct inode_operations ecryptfs_main_iops = {
 	.permission = ecryptfs_permission,
 	.setattr = ecryptfs_setattr,
 	.setxattr = ecryptfs_setxattr,
diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index 745c0f1..c209f67 100644
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -7,6 +7,7 @@
  * Copyright (C) 2004-2006 International Business Machines Corp.
  *   Author(s): Michael A. Halcrow <mhalcrow@us.ibm.com>
  *              Michael C. Thompson <mcthomps@us.ibm.com>
+ *              Trevor S. Highland <trevor.highland@gmail.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -64,26 +65,6 @@ int process_request_key_err(long err_code)
 	return rc;
 }
 
-static void wipe_auth_tok_list(struct list_head *auth_tok_list_head)
-{
-	struct list_head *walker;
-	struct ecryptfs_auth_tok_list_item *auth_tok_list_item;
-
-	walker = auth_tok_list_head->next;
-	while (walker != auth_tok_list_head) {
-		auth_tok_list_item =
-		    list_entry(walker, struct ecryptfs_auth_tok_list_item,
-			       list);
-		walker = auth_tok_list_item->list.next;
-		memset(auth_tok_list_item, 0,
-		       sizeof(struct ecryptfs_auth_tok_list_item));
-		kmem_cache_free(ecryptfs_auth_tok_list_item_cache,
-				auth_tok_list_item);
-	}
-}
-
-struct kmem_cache *ecryptfs_auth_tok_list_item_cache;
-
 /**
  * parse_packet_length
  * @data: Pointer to memory containing length at offset
@@ -102,12 +83,12 @@ static int parse_packet_length(unsigned char *data, size_t *size,
 	(*size) = 0;
 	if (data[0] < 192) {
 		/* One-byte length */
-		(*size) = data[0];
+		(*size) = (unsigned char)data[0];
 		(*length_size) = 1;
 	} else if (data[0] < 224) {
 		/* Two-byte length */
-		(*size) = ((data[0] - 192) * 256);
-		(*size) += (data[1] + 192);
+		(*size) = (((unsigned char)(data[0]) - 192) * 256);
+		(*size) += ((unsigned char)(data[1]) + 192);
 		(*length_size) = 2;
 	} else if (data[0] == 255) {
 		/* Five-byte length; we're not supposed to see this */
@@ -154,6 +135,499 @@ static int write_packet_length(char *dest, size_t size,
 	return rc;
 }
 
+static int
+write_tag_64_packet(char *signature, struct ecryptfs_session_key *session_key,
+		    char **packet, size_t *packet_len)
+{
+	size_t i = 0;
+	size_t data_len;
+	size_t packet_size_len;
+	char *message;
+	int rc;
+
+	/*
+	 *              ***** TAG 64 Packet Format *****
+	 *    | Content Type                       | 1 byte       |
+	 *    | Key Identifier Size                | 1 or 2 bytes |
+	 *    | Key Identifier                     | arbitrary    |
+	 *    | Encrypted File Encryption Key Size | 1 or 2 bytes |
+	 *    | Encrypted File Encryption Key      | arbitrary    |
+	 */
+	data_len = (5 + ECRYPTFS_SIG_SIZE_HEX
+		    + session_key->encrypted_key_size);
+	*packet = kmalloc(data_len, GFP_KERNEL);
+	message = *packet;
+	if (!message) {
+		ecryptfs_printk(KERN_ERR, "Unable to allocate memory\n");
+		rc = -ENOMEM;
+		goto out;
+	}
+	message[i++] = ECRYPTFS_TAG_64_PACKET_TYPE;
+	rc = write_packet_length(&message[i], ECRYPTFS_SIG_SIZE_HEX,
+				 &packet_size_len);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Error generating tag 64 packet "
+				"header; cannot generate packet length\n");
+		goto out;
+	}
+	i += packet_size_len;
+	memcpy(&message[i], signature, ECRYPTFS_SIG_SIZE_HEX);
+	i += ECRYPTFS_SIG_SIZE_HEX;
+	rc = write_packet_length(&message[i], session_key->encrypted_key_size,
+				 &packet_size_len);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Error generating tag 64 packet "
+				"header; cannot generate packet length\n");
+		goto out;
+	}
+	i += packet_size_len;
+	memcpy(&message[i], session_key->encrypted_key,
+	       session_key->encrypted_key_size);
+	i += session_key->encrypted_key_size;
+	*packet_len = i;
+out:
+	return rc;
+}
+
+static int
+parse_tag_65_packet(struct ecryptfs_session_key *session_key, u16 *cipher_code,
+		    struct ecryptfs_message *msg)
+{
+	size_t i = 0;
+	char *data;
+	size_t data_len;
+	size_t m_size;
+	size_t message_len;
+	u16 checksum = 0;
+	u16 expected_checksum = 0;
+	int rc;
+
+	/*
+	 *              ***** TAG 65 Packet Format *****
+	 *         | Content Type             | 1 byte       |
+	 *         | Status Indicator         | 1 byte       |
+	 *         | File Encryption Key Size | 1 or 2 bytes |
+	 *         | File Encryption Key      | arbitrary    |
+	 */
+	message_len = msg->data_len;
+	data = msg->data;
+	if (message_len < 4) {
+		rc = -EIO;
+		goto out;
+	}
+	if (data[i++] != ECRYPTFS_TAG_65_PACKET_TYPE) {
+		ecryptfs_printk(KERN_ERR, "Type should be ECRYPTFS_TAG_65\n");
+		rc = -EIO;
+		goto out;
+	}
+	if (data[i++]) {
+		ecryptfs_printk(KERN_ERR, "Status indicator has non-zero value "
+				"[%d]\n", data[i-1]);
+		rc = -EIO;
+		goto out;
+	}
+	rc = parse_packet_length(&data[i], &m_size, &data_len);
+	if (rc) {
+		ecryptfs_printk(KERN_WARNING, "Error parsing packet length; "
+				"rc = [%d]\n", rc);
+		goto out;
+	}
+	i += data_len;
+	if (message_len < (i + m_size)) {
+		ecryptfs_printk(KERN_ERR, "The received netlink message is "
+				"shorter than expected\n");
+		rc = -EIO;
+		goto out;
+	}
+	if (m_size < 3) {
+		ecryptfs_printk(KERN_ERR,
+				"The decrypted key is not long enough to "
+				"include a cipher code and checksum\n");
+		rc = -EIO;
+		goto out;
+	}
+	*cipher_code = data[i++];
+	/* The decrypted key includes 1 byte cipher code and 2 byte checksum */
+	session_key->decrypted_key_size = m_size - 3;
+	if (session_key->decrypted_key_size > ECRYPTFS_MAX_KEY_BYTES) {
+		ecryptfs_printk(KERN_ERR, "key_size [%d] larger than "
+				"the maximum key size [%d]\n",
+				session_key->decrypted_key_size,
+				ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES);
+		rc = -EIO;
+		goto out;
+	}
+	memcpy(session_key->decrypted_key, &data[i],
+	       session_key->decrypted_key_size);
+	i += session_key->decrypted_key_size;
+	expected_checksum += (unsigned char)(data[i++]) << 8;
+	expected_checksum += (unsigned char)(data[i++]);
+	for (i = 0; i < session_key->decrypted_key_size; i++)
+		checksum += session_key->decrypted_key[i];
+	if (expected_checksum != checksum) {
+		ecryptfs_printk(KERN_ERR, "Invalid checksum for file "
+				"encryption  key; expected [%x]; calculated "
+				"[%x]\n", expected_checksum, checksum);
+		rc = -EIO;
+	}
+out:
+	return rc;
+}
+
+
+static int
+write_tag_66_packet(char *signature, size_t cipher_code,
+		    struct ecryptfs_crypt_stat *crypt_stat, char **packet,
+		    size_t *packet_len)
+{
+	size_t i = 0;
+	size_t j;
+	size_t data_len;
+	size_t checksum = 0;
+	size_t packet_size_len;
+	char *message;
+	int rc;
+
+	/*
+	 *              ***** TAG 66 Packet Format *****
+	 *         | Content Type             | 1 byte       |
+	 *         | Key Identifier Size      | 1 or 2 bytes |
+	 *         | Key Identifier           | arbitrary    |
+	 *         | File Encryption Key Size | 1 or 2 bytes |
+	 *         | File Encryption Key      | arbitrary    |
+	 */
+	data_len = (5 + ECRYPTFS_SIG_SIZE_HEX + crypt_stat->key_size);
+	*packet = kmalloc(data_len, GFP_KERNEL);
+	message = *packet;
+	if (!message) {
+		ecryptfs_printk(KERN_ERR, "Unable to allocate memory\n");
+		rc = -ENOMEM;
+		goto out;
+	}
+	message[i++] = ECRYPTFS_TAG_66_PACKET_TYPE;
+	rc = write_packet_length(&message[i], ECRYPTFS_SIG_SIZE_HEX,
+				 &packet_size_len);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Error generating tag 66 packet "
+				"header; cannot generate packet length\n");
+		goto out;
+	}
+	i += packet_size_len;
+	memcpy(&message[i], signature, ECRYPTFS_SIG_SIZE_HEX);
+	i += ECRYPTFS_SIG_SIZE_HEX;
+	/* The encrypted key includes 1 byte cipher code and 2 byte checksum */
+	rc = write_packet_length(&message[i], crypt_stat->key_size + 3,
+				 &packet_size_len);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Error generating tag 66 packet "
+				"header; cannot generate packet length\n");
+		goto out;
+	}
+	i += packet_size_len;
+	message[i++] = cipher_code;
+	memcpy(&message[i], crypt_stat->key, crypt_stat->key_size);
+	i += crypt_stat->key_size;
+	for (j = 0; j < crypt_stat->key_size; j++)
+		checksum += crypt_stat->key[j];
+	message[i++] = (checksum / 256) % 256;
+	message[i++] = (checksum % 256);
+	*packet_len = i;
+out:
+	return rc;
+}
+
+static int
+parse_tag_67_packet(struct ecryptfs_key_record *key_rec,
+		    struct ecryptfs_message *msg)
+{
+	size_t i = 0;
+	char *data;
+	size_t data_len;
+	size_t message_len;
+	int rc;
+
+	/*
+	 *              ***** TAG 65 Packet Format *****
+	 *    | Content Type                       | 1 byte       |
+	 *    | Status Indicator                   | 1 byte       |
+	 *    | Encrypted File Encryption Key Size | 1 or 2 bytes |
+	 *    | Encrypted File Encryption Key      | arbitrary    |
+	 */
+	message_len = msg->data_len;
+	data = msg->data;
+	/* verify that everything through the encrypted FEK size is present */
+	if (message_len < 4) {
+		rc = -EIO;
+		goto out;
+	}
+	if (data[i++] != ECRYPTFS_TAG_67_PACKET_TYPE) {
+		ecryptfs_printk(KERN_ERR, "Type should be ECRYPTFS_TAG_67\n");
+		rc = -EIO;
+		goto out;
+	}
+	if (data[i++]) {
+		ecryptfs_printk(KERN_ERR, "Status indicator has non zero value"
+				" [%d]\n", data[i-1]);
+		rc = -EIO;
+		goto out;
+	}
+	rc = parse_packet_length(&data[i], &key_rec->enc_key_size, &data_len);
+	if (rc) {
+		ecryptfs_printk(KERN_WARNING, "Error parsing packet length; "
+				"rc = [%d]\n", rc);
+		goto out;
+	}
+	i += data_len;
+	if (message_len < (i + key_rec->enc_key_size)) {
+		ecryptfs_printk(KERN_ERR, "message_len [%d]; max len is [%d]\n",
+				message_len, (i + key_rec->enc_key_size));
+		rc = -EIO;
+		goto out;
+	}
+	if (key_rec->enc_key_size > ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES) {
+		ecryptfs_printk(KERN_ERR, "Encrypted key_size [%d] larger than "
+				"the maximum key size [%d]\n",
+				key_rec->enc_key_size,
+				ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES);
+		rc = -EIO;
+		goto out;
+	}
+	memcpy(key_rec->enc_key, &data[i], key_rec->enc_key_size);
+out:
+	return rc;
+}
+
+/**
+ * decrypt_pki_encrypted_session_key - Decrypt the session key with
+ * the given auth_tok.
+ *
+ * Returns Zero on success; non-zero error otherwise.
+ */
+static int decrypt_pki_encrypted_session_key(
+	struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+	struct ecryptfs_auth_tok *auth_tok,
+	struct ecryptfs_crypt_stat *crypt_stat)
+{
+	u16 cipher_code = 0;
+	struct ecryptfs_msg_ctx *msg_ctx;
+	struct ecryptfs_message *msg = NULL;
+	char *netlink_message;
+	size_t netlink_message_length;
+	int rc;
+
+	rc = write_tag_64_packet(mount_crypt_stat->global_auth_tok_sig,
+				 &(auth_tok->session_key),
+				 &netlink_message, &netlink_message_length);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Failed to write tag 64 packet");
+		goto out;
+	}
+	rc = ecryptfs_send_message(ecryptfs_transport, netlink_message,
+				   netlink_message_length, &msg_ctx);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Error sending netlink message\n");
+		goto out;
+	}
+	rc = ecryptfs_wait_for_response(msg_ctx, &msg);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Failed to receive tag 65 packet "
+				"from the user space daemon\n");
+		rc = -EIO;
+		goto out;
+	}
+	rc = parse_tag_65_packet(&(auth_tok->session_key),
+				 &cipher_code, msg);
+	if (rc) {
+		printk(KERN_ERR "Failed to parse tag 65 packet; rc = [%d]\n",
+		       rc);
+		goto out;
+	}
+	auth_tok->session_key.flags |= ECRYPTFS_CONTAINS_DECRYPTED_KEY;
+	memcpy(crypt_stat->key, auth_tok->session_key.decrypted_key,
+	       auth_tok->session_key.decrypted_key_size);
+	crypt_stat->key_size = auth_tok->session_key.decrypted_key_size;
+	rc = ecryptfs_cipher_code_to_string(crypt_stat->cipher, cipher_code);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Cipher code [%d] is invalid\n",
+				cipher_code)
+		goto out;
+	}
+	crypt_stat->flags |= ECRYPTFS_KEY_VALID;
+	if (ecryptfs_verbosity > 0) {
+		ecryptfs_printk(KERN_DEBUG, "Decrypted session key:\n");
+		ecryptfs_dump_hex(crypt_stat->key,
+				  crypt_stat->key_size);
+	}
+out:
+	if (msg)
+		kfree(msg);
+	return rc;
+}
+
+static void wipe_auth_tok_list(struct list_head *auth_tok_list_head)
+{
+	struct list_head *walker;
+	struct ecryptfs_auth_tok_list_item *auth_tok_list_item;
+
+	walker = auth_tok_list_head->next;
+	while (walker != auth_tok_list_head) {
+		auth_tok_list_item =
+		    list_entry(walker, struct ecryptfs_auth_tok_list_item,
+			       list);
+		walker = auth_tok_list_item->list.next;
+		memset(auth_tok_list_item, 0,
+		       sizeof(struct ecryptfs_auth_tok_list_item));
+		kmem_cache_free(ecryptfs_auth_tok_list_item_cache,
+				auth_tok_list_item);
+	}
+	auth_tok_list_head->next = NULL;
+}
+
+struct kmem_cache *ecryptfs_auth_tok_list_item_cache;
+
+
+/**
+ * parse_tag_1_packet
+ * @crypt_stat: The cryptographic context to modify based on packet
+ *              contents.
+ * @data: The raw bytes of the packet.
+ * @auth_tok_list: eCryptfs parses packets into authentication tokens;
+ *                 a new authentication token will be placed at the end
+ *                 of this list for this packet.
+ * @new_auth_tok: Pointer to a pointer to memory that this function
+ *                allocates; sets the memory address of the pointer to
+ *                NULL on error. This object is added to the
+ *                auth_tok_list.
+ * @packet_size: This function writes the size of the parsed packet
+ *               into this memory location; zero on error.
+ *
+ * Returns zero on success; non-zero on error.
+ */
+static int
+parse_tag_1_packet(struct ecryptfs_crypt_stat *crypt_stat,
+		   unsigned char *data, struct list_head *auth_tok_list,
+		   struct ecryptfs_auth_tok **new_auth_tok,
+		   size_t *packet_size, size_t max_packet_size)
+{
+	size_t body_size;
+	struct ecryptfs_auth_tok_list_item *auth_tok_list_item;
+	size_t length_size;
+	int rc = 0;
+
+	(*packet_size) = 0;
+	(*new_auth_tok) = NULL;
+
+	/* we check that:
+	 *   one byte for the Tag 1 ID flag
+	 *   two bytes for the body size
+	 * do not exceed the maximum_packet_size
+	 */
+	if (unlikely((*packet_size) + 3 > max_packet_size)) {
+		ecryptfs_printk(KERN_ERR, "Packet size exceeds max\n");
+		rc = -EINVAL;
+		goto out;
+	}
+	/* check for Tag 1 identifier - one byte */
+	if (data[(*packet_size)++] != ECRYPTFS_TAG_1_PACKET_TYPE) {
+		ecryptfs_printk(KERN_ERR, "Enter w/ first byte != 0x%.2x\n",
+				ECRYPTFS_TAG_1_PACKET_TYPE);
+		rc = -EINVAL;
+		goto out;
+	}
+	/* Released: wipe_auth_tok_list called in ecryptfs_parse_packet_set or
+	 * at end of function upon failure */
+	auth_tok_list_item =
+		kmem_cache_alloc(ecryptfs_auth_tok_list_item_cache,
+				 GFP_KERNEL);
+	if (!auth_tok_list_item) {
+		ecryptfs_printk(KERN_ERR, "Unable to allocate memory\n");
+		rc = -ENOMEM;
+		goto out;
+	}
+	memset(auth_tok_list_item, 0,
+	       sizeof(struct ecryptfs_auth_tok_list_item));
+	(*new_auth_tok) = &auth_tok_list_item->auth_tok;
+	/* check for body size - one to two bytes
+	 *
+	 *              ***** TAG 1 Packet Format *****
+	 *    | version number                     | 1 byte       |
+	 *    | key ID                             | 8 bytes      |
+	 *    | public key algorithm               | 1 byte       |
+	 *    | encrypted session key              | arbitrary    |
+	 */
+	rc = parse_packet_length(&data[(*packet_size)], &body_size,
+				 &length_size);
+	if (rc) {
+		ecryptfs_printk(KERN_WARNING, "Error parsing packet length; "
+				"rc = [%d]\n", rc);
+		goto out_free;
+	}
+	if (unlikely(body_size < (0x02 + ECRYPTFS_SIG_SIZE))) {
+		ecryptfs_printk(KERN_WARNING, "Invalid body size ([%d])\n",
+				body_size);
+		rc = -EINVAL;
+		goto out_free;
+	}
+	(*packet_size) += length_size;
+	if (unlikely((*packet_size) + body_size > max_packet_size)) {
+		ecryptfs_printk(KERN_ERR, "Packet size exceeds max\n");
+		rc = -EINVAL;
+		goto out_free;
+	}
+	/* Version 3 (from RFC2440) - one byte */
+	if (unlikely(data[(*packet_size)++] != 0x03)) {
+		ecryptfs_printk(KERN_DEBUG, "Unknown version number "
+				"[%d]\n", data[(*packet_size) - 1]);
+		rc = -EINVAL;
+		goto out_free;
+	}
+	/* Read Signature */
+	ecryptfs_to_hex((*new_auth_tok)->token.private_key.signature,
+			&data[(*packet_size)], ECRYPTFS_SIG_SIZE);
+	*packet_size += ECRYPTFS_SIG_SIZE;
+	/* This byte is skipped because the kernel does not need to
+	 * know which public key encryption algorithm was used */
+	(*packet_size)++;
+	(*new_auth_tok)->session_key.encrypted_key_size =
+		body_size - (0x02 + ECRYPTFS_SIG_SIZE);
+	if ((*new_auth_tok)->session_key.encrypted_key_size
+	    > ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES) {
+		ecryptfs_printk(KERN_ERR, "Tag 1 packet contains key larger "
+				"than ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES");
+		rc = -EINVAL;
+		goto out;
+	}
+	ecryptfs_printk(KERN_DEBUG, "Encrypted key size = [%d]\n",
+			(*new_auth_tok)->session_key.encrypted_key_size);
+	memcpy((*new_auth_tok)->session_key.encrypted_key,
+	       &data[(*packet_size)], (body_size - 0x02 - ECRYPTFS_SIG_SIZE));
+	(*packet_size) += (*new_auth_tok)->session_key.encrypted_key_size;
+	(*new_auth_tok)->session_key.flags &=
+		~ECRYPTFS_CONTAINS_DECRYPTED_KEY;
+	(*new_auth_tok)->session_key.flags |=
+		ECRYPTFS_CONTAINS_ENCRYPTED_KEY;
+	(*new_auth_tok)->token_type = ECRYPTFS_PRIVATE_KEY;
+	(*new_auth_tok)->flags |= ECRYPTFS_PRIVATE_KEY;
+	/* TODO: Why are we setting this flag here? Don't we want the
+	 * userspace to decrypt the session key? */
+	(*new_auth_tok)->session_key.flags &=
+		~(ECRYPTFS_USERSPACE_SHOULD_TRY_TO_DECRYPT);
+	(*new_auth_tok)->session_key.flags &=
+		~(ECRYPTFS_USERSPACE_SHOULD_TRY_TO_ENCRYPT);
+	list_add(&auth_tok_list_item->list, auth_tok_list);
+	goto out;
+out_free:
+	(*new_auth_tok) = NULL;
+	memset(auth_tok_list_item, 0,
+	       sizeof(struct ecryptfs_auth_tok_list_item));
+	kmem_cache_free(ecryptfs_auth_tok_list_item_cache,
+			auth_tok_list_item);
+out:
+	if (rc)
+		(*packet_size) = 0;
+	return rc;
+}
+
 /**
  * parse_tag_3_packet
  * @crypt_stat: The cryptographic context to modify based on packet
@@ -178,10 +652,10 @@ parse_tag_3_packet(struct ecryptfs_crypt_stat *crypt_stat,
 		   struct ecryptfs_auth_tok **new_auth_tok,
 		   size_t *packet_size, size_t max_packet_size)
 {
-	int rc = 0;
 	size_t body_size;
 	struct ecryptfs_auth_tok_list_item *auth_tok_list_item;
 	size_t length_size;
+	int rc = 0;
 
 	(*packet_size) = 0;
 	(*new_auth_tok) = NULL;
@@ -207,14 +681,12 @@ parse_tag_3_packet(struct ecryptfs_crypt_stat *crypt_stat,
 	/* Released: wipe_auth_tok_list called in ecryptfs_parse_packet_set or
 	 * at end of function upon failure */
 	auth_tok_list_item =
-	    kmem_cache_alloc(ecryptfs_auth_tok_list_item_cache, GFP_KERNEL);
+	    kmem_cache_zalloc(ecryptfs_auth_tok_list_item_cache, GFP_KERNEL);
 	if (!auth_tok_list_item) {
 		ecryptfs_printk(KERN_ERR, "Unable to allocate memory\n");
 		rc = -ENOMEM;
 		goto out;
 	}
-	memset(auth_tok_list_item, 0,
-	       sizeof(struct ecryptfs_auth_tok_list_item));
 	(*new_auth_tok) = &auth_tok_list_item->auth_tok;
 
 	/* check for body size - one to two bytes */
@@ -321,10 +793,10 @@ parse_tag_3_packet(struct ecryptfs_crypt_stat *crypt_stat,
 	(*new_auth_tok)->token_type = ECRYPTFS_PASSWORD;
 	/* TODO: Parametarize; we might actually want userspace to
 	 * decrypt the session key. */
-	ECRYPTFS_CLEAR_FLAG((*new_auth_tok)->session_key.flags,
-			    ECRYPTFS_USERSPACE_SHOULD_TRY_TO_DECRYPT);
-	ECRYPTFS_CLEAR_FLAG((*new_auth_tok)->session_key.flags,
-			    ECRYPTFS_USERSPACE_SHOULD_TRY_TO_ENCRYPT);
+	(*new_auth_tok)->session_key.flags &=
+			    ~(ECRYPTFS_USERSPACE_SHOULD_TRY_TO_DECRYPT);
+	(*new_auth_tok)->session_key.flags &=
+			    ~(ECRYPTFS_USERSPACE_SHOULD_TRY_TO_ENCRYPT);
 	list_add(&auth_tok_list_item->list, auth_tok_list);
 	goto out;
 out_free:
@@ -360,9 +832,9 @@ parse_tag_11_packet(unsigned char *data, unsigned char *contents,
 		    size_t max_contents_bytes, size_t *tag_11_contents_size,
 		    size_t *packet_size, size_t max_packet_size)
 {
-	int rc = 0;
 	size_t body_size;
 	size_t length_size;
+	int rc = 0;
 
 	(*packet_size) = 0;
 	(*tag_11_contents_size) = 0;
@@ -461,7 +933,6 @@ static int decrypt_session_key(struct ecryptfs_auth_tok *auth_tok,
 	struct ecryptfs_password *password_s_ptr;
 	struct scatterlist src_sg[2], dst_sg[2];
 	struct mutex *tfm_mutex = NULL;
-	/* TODO: Use virt_to_scatterlist for these */
 	char *encrypted_session_key;
 	char *session_key;
 	struct blkcipher_desc desc = {
@@ -470,8 +941,7 @@ static int decrypt_session_key(struct ecryptfs_auth_tok *auth_tok,
 	int rc = 0;
 
 	password_s_ptr = &auth_tok->token.password;
-	if (ECRYPTFS_CHECK_FLAG(password_s_ptr->flags,
-				ECRYPTFS_SESSION_KEY_ENCRYPTION_KEY_SET))
+	if (password_s_ptr->flags & ECRYPTFS_SESSION_KEY_ENCRYPTION_KEY_SET)
 		ecryptfs_printk(KERN_DEBUG, "Session key encryption key "
 				"set; skipping key generation\n");
 	ecryptfs_printk(KERN_DEBUG, "Session key encryption key (size [%d])"
@@ -553,7 +1023,7 @@ static int decrypt_session_key(struct ecryptfs_auth_tok *auth_tok,
 	auth_tok->session_key.flags |= ECRYPTFS_CONTAINS_DECRYPTED_KEY;
 	memcpy(crypt_stat->key, auth_tok->session_key.decrypted_key,
 	       auth_tok->session_key.decrypted_key_size);
-	ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_KEY_VALID);
+	crypt_stat->flags |= ECRYPTFS_KEY_VALID;
 	ecryptfs_printk(KERN_DEBUG, "Decrypted session key:\n");
 	if (ecryptfs_verbosity > 0)
 		ecryptfs_dump_hex(crypt_stat->key,
@@ -589,7 +1059,6 @@ int ecryptfs_parse_packet_set(struct ecryptfs_crypt_stat *crypt_stat,
 			      struct dentry *ecryptfs_dentry)
 {
 	size_t i = 0;
-	int rc = 0;
 	size_t found_auth_tok = 0;
 	size_t next_packet_is_auth_tok_packet;
 	char sig[ECRYPTFS_SIG_SIZE_HEX];
@@ -605,6 +1074,7 @@ int ecryptfs_parse_packet_set(struct ecryptfs_crypt_stat *crypt_stat,
 	unsigned char sig_tmp_space[ECRYPTFS_SIG_SIZE];
 	size_t tag_11_contents_size;
 	size_t tag_11_packet_size;
+	int rc = 0;
 
 	INIT_LIST_HEAD(&auth_tok_list);
 	/* Parse the header to find as many packets as we can, these will be
@@ -656,8 +1126,21 @@ int ecryptfs_parse_packet_set(struct ecryptfs_crypt_stat *crypt_stat,
 					sig_tmp_space, tag_11_contents_size);
 			new_auth_tok->token.password.signature[
 				ECRYPTFS_PASSWORD_SIG_SIZE] = '\0';
-			ECRYPTFS_SET_FLAG(crypt_stat->flags,
-					  ECRYPTFS_ENCRYPTED);
+			crypt_stat->flags |= ECRYPTFS_ENCRYPTED;
+			break;
+		case ECRYPTFS_TAG_1_PACKET_TYPE:
+			rc = parse_tag_1_packet(crypt_stat,
+						(unsigned char *)&src[i],
+						&auth_tok_list, &new_auth_tok,
+						&packet_size, max_packet_size);
+			if (rc) {
+				ecryptfs_printk(KERN_ERR, "Error parsing "
+						"tag 1 packet\n");
+				rc = -EIO;
+				goto out_wipe_list;
+			}
+			i += packet_size;
+			crypt_stat->flags |= ECRYPTFS_ENCRYPTED;
 			break;
 		case ECRYPTFS_TAG_11_PACKET_TYPE:
 			ecryptfs_printk(KERN_WARNING, "Invalid packet set "
@@ -706,31 +1189,46 @@ int ecryptfs_parse_packet_set(struct ecryptfs_crypt_stat *crypt_stat,
 			goto leave_list;
 			/* TODO: Transfer the common salt into the
 			 * crypt_stat salt */
+		} else if ((candidate_auth_tok->token_type
+			    == ECRYPTFS_PRIVATE_KEY)
+			   && !strncmp(candidate_auth_tok->token.private_key.signature,
+				     sig, ECRYPTFS_SIG_SIZE_HEX)) {
+			found_auth_tok = 1;
+			goto leave_list;
 		}
 	}
-leave_list:
 	if (!found_auth_tok) {
 		ecryptfs_printk(KERN_ERR, "Could not find authentication "
 				"token on temporary list for sig [%.*s]\n",
 				ECRYPTFS_SIG_SIZE_HEX, sig);
 		rc = -EIO;
 		goto out_wipe_list;
-	} else {
+	}
+leave_list:
+	rc = -ENOTSUPP;
+	if (candidate_auth_tok->token_type == ECRYPTFS_PRIVATE_KEY) {
+		memcpy(&(candidate_auth_tok->token.private_key),
+		       &(chosen_auth_tok->token.private_key),
+		       sizeof(struct ecryptfs_private_key));
+		rc = decrypt_pki_encrypted_session_key(mount_crypt_stat,
+						       candidate_auth_tok,
+						       crypt_stat);
+	} else if (candidate_auth_tok->token_type == ECRYPTFS_PASSWORD) {
 		memcpy(&(candidate_auth_tok->token.password),
 		       &(chosen_auth_tok->token.password),
 		       sizeof(struct ecryptfs_password));
 		rc = decrypt_session_key(candidate_auth_tok, crypt_stat);
-		if (rc) {
-			ecryptfs_printk(KERN_ERR, "Error decrypting the "
-					"session key\n");
-			goto out_wipe_list;
-		}
-		rc = ecryptfs_compute_root_iv(crypt_stat);
-		if (rc) {
-			ecryptfs_printk(KERN_ERR, "Error computing "
-					"the root IV\n");
-			goto out_wipe_list;
-		}
+	}
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Error decrypting the "
+				"session key; rc = [%d]\n", rc);
+		goto out_wipe_list;
+	}
+	rc = ecryptfs_compute_root_iv(crypt_stat);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Error computing "
+				"the root IV\n");
+		goto out_wipe_list;
 	}
 	rc = ecryptfs_init_crypt_ctx(crypt_stat);
 	if (rc) {
@@ -743,6 +1241,145 @@ out_wipe_list:
 out:
 	return rc;
 }
+static int
+pki_encrypt_session_key(struct ecryptfs_auth_tok *auth_tok,
+			struct ecryptfs_crypt_stat *crypt_stat,
+			struct ecryptfs_key_record *key_rec)
+{
+	struct ecryptfs_msg_ctx *msg_ctx = NULL;
+	char *netlink_payload;
+	size_t netlink_payload_length;
+	struct ecryptfs_message *msg;
+	int rc;
+
+	rc = write_tag_66_packet(auth_tok->token.private_key.signature,
+				 ecryptfs_code_for_cipher_string(crypt_stat),
+				 crypt_stat, &netlink_payload,
+				 &netlink_payload_length);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Error generating tag 66 packet\n");
+		goto out;
+	}
+	rc = ecryptfs_send_message(ecryptfs_transport, netlink_payload,
+				   netlink_payload_length, &msg_ctx);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Error sending netlink message\n");
+		goto out;
+	}
+	rc = ecryptfs_wait_for_response(msg_ctx, &msg);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Failed to receive tag 67 packet "
+				"from the user space daemon\n");
+		rc = -EIO;
+		goto out;
+	}
+	rc = parse_tag_67_packet(key_rec, msg);
+	if (rc)
+		ecryptfs_printk(KERN_ERR, "Error parsing tag 67 packet\n");
+	kfree(msg);
+out:
+	if (netlink_payload)
+		kfree(netlink_payload);
+	return rc;
+}
+/**
+ * write_tag_1_packet - Write an RFC2440-compatible tag 1 (public key) packet
+ * @dest: Buffer into which to write the packet
+ * @max: Maximum number of bytes that can be writtn
+ * @packet_size: This function will write the number of bytes that end
+ *               up constituting the packet; set to zero on error
+ *
+ * Returns zero on success; non-zero on error.
+ */
+static int
+write_tag_1_packet(char *dest, size_t max, struct ecryptfs_auth_tok *auth_tok,
+		   struct ecryptfs_crypt_stat *crypt_stat,
+		   struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+		   struct ecryptfs_key_record *key_rec, size_t *packet_size)
+{
+	size_t i;
+	size_t encrypted_session_key_valid = 0;
+	size_t key_rec_size;
+	size_t packet_size_length;
+	int rc = 0;
+
+	(*packet_size) = 0;
+	ecryptfs_from_hex(key_rec->sig, auth_tok->token.private_key.signature,
+			  ECRYPTFS_SIG_SIZE);
+	encrypted_session_key_valid = 0;
+	for (i = 0; i < crypt_stat->key_size; i++)
+		encrypted_session_key_valid |=
+			auth_tok->session_key.encrypted_key[i];
+	if (encrypted_session_key_valid) {
+		memcpy(key_rec->enc_key,
+		       auth_tok->session_key.encrypted_key,
+		       auth_tok->session_key.encrypted_key_size);
+		goto encrypted_session_key_set;
+	}
+	if (auth_tok->session_key.encrypted_key_size == 0)
+		auth_tok->session_key.encrypted_key_size =
+			auth_tok->token.private_key.key_size;
+	rc = pki_encrypt_session_key(auth_tok, crypt_stat, key_rec);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Failed to encrypt session key "
+				"via a pki");
+		goto out;
+	}
+	if (ecryptfs_verbosity > 0) {
+		ecryptfs_printk(KERN_DEBUG, "Encrypted key:\n");
+		ecryptfs_dump_hex(key_rec->enc_key, key_rec->enc_key_size);
+	}
+encrypted_session_key_set:
+	/* Now we have a valid key_rec.  Append it to the
+	 * key_rec set. */
+	key_rec_size = (sizeof(struct ecryptfs_key_record)
+			- ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES
+			+ (key_rec->enc_key_size));
+	/* TODO: Include a packet size limit as a parameter to this
+	 * function once we have multi-packet headers (for versions
+	 * later than 0.1 */
+	if (key_rec_size >= ECRYPTFS_MAX_KEYSET_SIZE) {
+		ecryptfs_printk(KERN_ERR, "Keyset too large\n");
+		rc = -EINVAL;
+		goto out;
+	}
+	/*              ***** TAG 1 Packet Format *****
+	 *    | version number                     | 1 byte       |
+	 *    | key ID                             | 8 bytes      |
+	 *    | public key algorithm               | 1 byte       |
+	 *    | encrypted session key              | arbitrary    |
+	 */
+	if ((0x02 + ECRYPTFS_SIG_SIZE + key_rec->enc_key_size) >= max) {
+		ecryptfs_printk(KERN_ERR,
+				"Authentication token is too large\n");
+		rc = -EINVAL;
+		goto out;
+	}
+	dest[(*packet_size)++] = ECRYPTFS_TAG_1_PACKET_TYPE;
+	/* This format is inspired by OpenPGP; see RFC 2440
+	 * packet tag 1 */
+	rc = write_packet_length(&dest[(*packet_size)],
+				 (0x02 + ECRYPTFS_SIG_SIZE +
+				 key_rec->enc_key_size),
+				 &packet_size_length);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Error generating tag 1 packet "
+				"header; cannot generate packet length\n");
+		goto out;
+	}
+	(*packet_size) += packet_size_length;
+	dest[(*packet_size)++] = 0x03; /* version 3 */
+	memcpy(&dest[(*packet_size)], key_rec->sig, ECRYPTFS_SIG_SIZE);
+	(*packet_size) += ECRYPTFS_SIG_SIZE;
+	dest[(*packet_size)++] = RFC2440_CIPHER_RSA;
+	memcpy(&dest[(*packet_size)], key_rec->enc_key,
+	       key_rec->enc_key_size);
+	(*packet_size) += key_rec->enc_key_size;
+out:
+	if (rc)
+		(*packet_size) = 0;
+	return rc;
+}
 
 /**
  * write_tag_11_packet
@@ -758,8 +1395,8 @@ static int
 write_tag_11_packet(char *dest, int max, char *contents, size_t contents_length,
 		    size_t *packet_length)
 {
-	int rc = 0;
 	size_t packet_size_length;
+	int rc = 0;
 
 	(*packet_length) = 0;
 	if ((13 + contents_length) > max) {
@@ -817,7 +1454,6 @@ write_tag_3_packet(char *dest, size_t max, struct ecryptfs_auth_tok *auth_tok,
 		   struct ecryptfs_key_record *key_rec, size_t *packet_size)
 {
 	size_t i;
-	size_t signature_is_valid = 0;
 	size_t encrypted_session_key_valid = 0;
 	char session_key_encryption_key[ECRYPTFS_MAX_KEY_BYTES];
 	struct scatterlist dest_sg[2];
@@ -833,19 +1469,14 @@ write_tag_3_packet(char *dest, size_t max, struct ecryptfs_auth_tok *auth_tok,
 	int rc = 0;
 
 	(*packet_size) = 0;
-	/* Check for a valid signature on the auth_tok */
-	for (i = 0; i < ECRYPTFS_SIG_SIZE_HEX; i++)
-		signature_is_valid |= auth_tok->token.password.signature[i];
-	if (!signature_is_valid)
-		BUG();
-	ecryptfs_from_hex((*key_rec).sig, auth_tok->token.password.signature,
+	ecryptfs_from_hex(key_rec->sig, auth_tok->token.password.signature,
 			  ECRYPTFS_SIG_SIZE);
 	encrypted_session_key_valid = 0;
 	for (i = 0; i < crypt_stat->key_size; i++)
 		encrypted_session_key_valid |=
 			auth_tok->session_key.encrypted_key[i];
 	if (encrypted_session_key_valid) {
-		memcpy((*key_rec).enc_key,
+		memcpy(key_rec->enc_key,
 		       auth_tok->session_key.encrypted_key,
 		       auth_tok->session_key.encrypted_key_size);
 		goto encrypted_session_key_set;
@@ -858,10 +1489,10 @@ write_tag_3_packet(char *dest, size_t max, struct ecryptfs_auth_tok *auth_tok,
 		memset((crypt_stat->key + 24), 0, 8);
 		auth_tok->session_key.encrypted_key_size = 32;
 	}
-	(*key_rec).enc_key_size =
+	key_rec->enc_key_size =
 		auth_tok->session_key.encrypted_key_size;
-	if (ECRYPTFS_CHECK_FLAG(auth_tok->token.password.flags,
-				ECRYPTFS_SESSION_KEY_ENCRYPTION_KEY_SET)) {
+	if (auth_tok->token.password.flags &
+	    ECRYPTFS_SESSION_KEY_ENCRYPTION_KEY_SET) {
 		ecryptfs_printk(KERN_DEBUG, "Using previously generated "
 				"session key encryption key of size [%d]\n",
 				auth_tok->token.password.
@@ -879,15 +1510,15 @@ write_tag_3_packet(char *dest, size_t max, struct ecryptfs_auth_tok *auth_tok,
 		ecryptfs_dump_hex(session_key_encryption_key, 16);
 	}
 	rc = virt_to_scatterlist(crypt_stat->key,
-				 (*key_rec).enc_key_size, src_sg, 2);
+				 key_rec->enc_key_size, src_sg, 2);
 	if (!rc) {
 		ecryptfs_printk(KERN_ERR, "Error generating scatterlist "
 				"for crypt_stat session key\n");
 		rc = -ENOMEM;
 		goto out;
 	}
-	rc = virt_to_scatterlist((*key_rec).enc_key,
-				 (*key_rec).enc_key_size, dest_sg, 2);
+	rc = virt_to_scatterlist(key_rec->enc_key,
+				 key_rec->enc_key_size, dest_sg, 2);
 	if (!rc) {
 		ecryptfs_printk(KERN_ERR, "Error generating scatterlist "
 				"for crypt_stat encrypted session key\n");
@@ -943,14 +1574,14 @@ write_tag_3_packet(char *dest, size_t max, struct ecryptfs_auth_tok *auth_tok,
 		mutex_unlock(tfm_mutex);
 	ecryptfs_printk(KERN_DEBUG, "This should be the encrypted key:\n");
 	if (ecryptfs_verbosity > 0)
-		ecryptfs_dump_hex((*key_rec).enc_key,
-				  (*key_rec).enc_key_size);
+		ecryptfs_dump_hex(key_rec->enc_key,
+				  key_rec->enc_key_size);
 encrypted_session_key_set:
 	/* Now we have a valid key_rec.  Append it to the
 	 * key_rec set. */
 	key_rec_size = (sizeof(struct ecryptfs_key_record)
 			- ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES
-			+ ((*key_rec).enc_key_size));
+			+ (key_rec->enc_key_size));
 	/* TODO: Include a packet size limit as a parameter to this
 	 * function once we have multi-packet headers (for versions
 	 * later than 0.1 */
@@ -962,7 +1593,7 @@ encrypted_session_key_set:
 	/* TODO: Packet size limit */
 	/* We have 5 bytes of surrounding packet data */
 	if ((0x05 + ECRYPTFS_SALT_SIZE
-	     + (*key_rec).enc_key_size) >= max) {
+	     + key_rec->enc_key_size) >= max) {
 		ecryptfs_printk(KERN_ERR, "Authentication token is too "
 				"large\n");
 		rc = -EINVAL;
@@ -974,7 +1605,7 @@ encrypted_session_key_set:
 	/* ver+cipher+s2k+hash+salt+iter+enc_key */
 	rc = write_packet_length(&dest[(*packet_size)],
 				 (0x05 + ECRYPTFS_SALT_SIZE
-				  + (*key_rec).enc_key_size),
+				  + key_rec->enc_key_size),
 				 &packet_size_length);
 	if (rc) {
 		ecryptfs_printk(KERN_ERR, "Error generating tag 3 packet "
@@ -997,9 +1628,9 @@ encrypted_session_key_set:
 	       ECRYPTFS_SALT_SIZE);
 	(*packet_size) += ECRYPTFS_SALT_SIZE;	/* salt */
 	dest[(*packet_size)++] = 0x60;	/* hash iterations (65536) */
-	memcpy(&dest[(*packet_size)], (*key_rec).enc_key,
-	       (*key_rec).enc_key_size);
-	(*packet_size) += (*key_rec).enc_key_size;
+	memcpy(&dest[(*packet_size)], key_rec->enc_key,
+	       key_rec->enc_key_size);
+	(*packet_size) += key_rec->enc_key_size;
 out:
 	if (desc.tfm && !tfm_mutex)
 		crypto_free_blkcipher(desc.tfm);
@@ -1029,13 +1660,13 @@ ecryptfs_generate_key_packet_set(char *dest_base,
 				 struct dentry *ecryptfs_dentry, size_t *len,
 				 size_t max)
 {
-	int rc = 0;
 	struct ecryptfs_auth_tok *auth_tok;
 	struct ecryptfs_mount_crypt_stat *mount_crypt_stat =
 		&ecryptfs_superblock_to_private(
 			ecryptfs_dentry->d_sb)->mount_crypt_stat;
 	size_t written;
 	struct ecryptfs_key_record key_rec;
+	int rc = 0;
 
 	(*len) = 0;
 	if (mount_crypt_stat->global_auth_tok) {
@@ -1062,20 +1693,23 @@ ecryptfs_generate_key_packet_set(char *dest_base,
 				goto out;
 			}
 			(*len) += written;
+		} else if (auth_tok->token_type == ECRYPTFS_PRIVATE_KEY) {
+			rc = write_tag_1_packet(dest_base + (*len),
+						max, auth_tok,
+						crypt_stat,mount_crypt_stat,
+						&key_rec, &written);
+			if (rc) {
+				ecryptfs_printk(KERN_WARNING, "Error "
+						"writing tag 1 packet\n");
+				goto out;
+			}
+			(*len) += written;
 		} else {
 			ecryptfs_printk(KERN_WARNING, "Unsupported "
 					"authentication token type\n");
 			rc = -EINVAL;
 			goto out;
 		}
-		if (rc) {
-			ecryptfs_printk(KERN_WARNING, "Error writing "
-					"authentication token packet with sig "
-					"= [%s]\n",
-					mount_crypt_stat->global_auth_tok_sig);
-			rc = -EIO;
-			goto out;
-		}
 	} else
 		BUG();
 	if (likely((max - (*len)) > 0)) {
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index d0541ae8..26fe405 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -3,9 +3,10 @@
  *
  * Copyright (C) 1997-2003 Erez Zadok
  * Copyright (C) 2001-2003 Stony Brook University
- * Copyright (C) 2004-2006 International Business Machines Corp.
+ * Copyright (C) 2004-2007 International Business Machines Corp.
  *   Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
  *              Michael C. Thompson <mcthomps@us.ibm.com>
+ *              Tyler Hicks <tyhicks@ou.edu>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -48,6 +49,43 @@ MODULE_PARM_DESC(ecryptfs_verbosity,
 		 "Initial verbosity level (0 or 1; defaults to "
 		 "0, which is Quiet)");
 
+/**
+ * Module parameter that defines the number of netlink message buffer
+ * elements
+ */
+unsigned int ecryptfs_message_buf_len = ECRYPTFS_DEFAULT_MSG_CTX_ELEMS;
+
+module_param(ecryptfs_message_buf_len, uint, 0);
+MODULE_PARM_DESC(ecryptfs_message_buf_len,
+		 "Number of message buffer elements");
+
+/**
+ * Module parameter that defines the maximum guaranteed amount of time to wait
+ * for a response through netlink.  The actual sleep time will be, more than
+ * likely, a small amount greater than this specified value, but only less if
+ * the netlink message successfully arrives.
+ */
+signed long ecryptfs_message_wait_timeout = ECRYPTFS_MAX_MSG_CTX_TTL / HZ;
+
+module_param(ecryptfs_message_wait_timeout, long, 0);
+MODULE_PARM_DESC(ecryptfs_message_wait_timeout,
+		 "Maximum number of seconds that an operation will "
+		 "sleep while waiting for a message response from "
+		 "userspace");
+
+/**
+ * Module parameter that is an estimate of the maximum number of users
+ * that will be concurrently using eCryptfs. Set this to the right
+ * value to balance performance and memory use.
+ */
+unsigned int ecryptfs_number_of_users = ECRYPTFS_DEFAULT_NUM_USERS;
+
+module_param(ecryptfs_number_of_users, uint, 0);
+MODULE_PARM_DESC(ecryptfs_number_of_users, "An estimate of the number of "
+		 "concurrent users of eCryptfs");
+
+unsigned int ecryptfs_transport = ECRYPTFS_DEFAULT_TRANSPORT;
+
 void __ecryptfs_printk(const char *fmt, ...)
 {
 	va_list args;
@@ -124,7 +162,8 @@ out:
 enum { ecryptfs_opt_sig, ecryptfs_opt_ecryptfs_sig, ecryptfs_opt_debug,
        ecryptfs_opt_ecryptfs_debug, ecryptfs_opt_cipher,
        ecryptfs_opt_ecryptfs_cipher, ecryptfs_opt_ecryptfs_key_bytes,
-       ecryptfs_opt_passthrough, ecryptfs_opt_err };
+       ecryptfs_opt_passthrough, ecryptfs_opt_xattr_metadata,
+       ecryptfs_opt_encrypted_view, ecryptfs_opt_err };
 
 static match_table_t tokens = {
 	{ecryptfs_opt_sig, "sig=%s"},
@@ -135,6 +174,8 @@ static match_table_t tokens = {
 	{ecryptfs_opt_ecryptfs_cipher, "ecryptfs_cipher=%s"},
 	{ecryptfs_opt_ecryptfs_key_bytes, "ecryptfs_key_bytes=%u"},
 	{ecryptfs_opt_passthrough, "ecryptfs_passthrough"},
+	{ecryptfs_opt_xattr_metadata, "ecryptfs_xattr_metadata"},
+	{ecryptfs_opt_encrypted_view, "ecryptfs_encrypted_view"},
 	{ecryptfs_opt_err, NULL}
 };
 
@@ -275,6 +316,16 @@ static int ecryptfs_parse_options(struct super_block *sb, char *options)
 			mount_crypt_stat->flags |=
 				ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED;
 			break;
+		case ecryptfs_opt_xattr_metadata:
+			mount_crypt_stat->flags |=
+				ECRYPTFS_XATTR_METADATA_ENABLED;
+			break;
+		case ecryptfs_opt_encrypted_view:
+			mount_crypt_stat->flags |=
+				ECRYPTFS_XATTR_METADATA_ENABLED;
+			mount_crypt_stat->flags |=
+				ECRYPTFS_ENCRYPTED_VIEW_ENABLED;
+			break;
 		case ecryptfs_opt_err:
 		default:
 			ecryptfs_printk(KERN_WARNING,
@@ -347,9 +398,10 @@ static int ecryptfs_parse_options(struct super_block *sb, char *options)
 		rc = -EINVAL;
 		goto out;
 	}
-	if (auth_tok->token_type != ECRYPTFS_PASSWORD) {
+	if (auth_tok->token_type != ECRYPTFS_PASSWORD
+	    && auth_tok->token_type != ECRYPTFS_PRIVATE_KEY) {
 		ecryptfs_printk(KERN_ERR, "Invalid auth_tok structure "
-				"returned from key\n");
+				"returned from key query\n");
 		rc = -EINVAL;
 		goto out;
 	}
@@ -378,15 +430,13 @@ ecryptfs_fill_super(struct super_block *sb, void *raw_data, int silent)
 
 	/* Released in ecryptfs_put_super() */
 	ecryptfs_set_superblock_private(sb,
-					kmem_cache_alloc(ecryptfs_sb_info_cache,
+					kmem_cache_zalloc(ecryptfs_sb_info_cache,
 							 GFP_KERNEL));
 	if (!ecryptfs_superblock_to_private(sb)) {
 		ecryptfs_printk(KERN_WARNING, "Out of memory\n");
 		rc = -ENOMEM;
 		goto out;
 	}
-	memset(ecryptfs_superblock_to_private(sb), 0,
-	       sizeof(struct ecryptfs_sb_info));
 	sb->s_op = &ecryptfs_sops;
 	/* Released through deactivate_super(sb) from get_sb_nodev */
 	sb->s_root = d_alloc(NULL, &(const struct qstr) {
@@ -402,7 +452,7 @@ ecryptfs_fill_super(struct super_block *sb, void *raw_data, int silent)
 	/* Released in d_release when dput(sb->s_root) is called */
 	/* through deactivate_super(sb) from get_sb_nodev() */
 	ecryptfs_set_dentry_private(sb->s_root,
-				    kmem_cache_alloc(ecryptfs_dentry_info_cache,
+				    kmem_cache_zalloc(ecryptfs_dentry_info_cache,
 						     GFP_KERNEL));
 	if (!ecryptfs_dentry_to_private(sb->s_root)) {
 		ecryptfs_printk(KERN_ERR,
@@ -410,8 +460,6 @@ ecryptfs_fill_super(struct super_block *sb, void *raw_data, int silent)
 		rc = -ENOMEM;
 		goto out;
 	}
-	memset(ecryptfs_dentry_to_private(sb->s_root), 0,
-	       sizeof(struct ecryptfs_dentry_info));
 	rc = 0;
 out:
 	/* Should be able to rely on deactivate_super called from
@@ -594,6 +642,11 @@ static struct ecryptfs_cache_info {
 		.size = PAGE_CACHE_SIZE,
 	},
 	{
+		.cache = &ecryptfs_xattr_cache,
+		.name = "ecryptfs_xattr_cache",
+		.size = PAGE_CACHE_SIZE,
+	},
+	{
 		.cache = &ecryptfs_lower_page_cache,
 		.name = "ecryptfs_lower_page_cache",
 		.size = PAGE_CACHE_SIZE,
@@ -699,7 +752,8 @@ static struct ecryptfs_version_str_map_elem {
 	{ECRYPTFS_VERSIONING_PASSPHRASE, "passphrase"},
 	{ECRYPTFS_VERSIONING_PUBKEY, "pubkey"},
 	{ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH, "plaintext passthrough"},
-	{ECRYPTFS_VERSIONING_POLICY, "policy"}
+	{ECRYPTFS_VERSIONING_POLICY, "policy"},
+	{ECRYPTFS_VERSIONING_XATTR, "metadata in extended attribute"}
 };
 
 static ssize_t version_str_show(struct ecryptfs_obj *obj, char *buff)
@@ -798,6 +852,11 @@ static int __init ecryptfs_init(void)
 		ecryptfs_free_kmem_caches();
 		goto out;
 	}
+	rc = ecryptfs_init_messaging(ecryptfs_transport);
+	if (rc) {
+		ecryptfs_printk(KERN_ERR, "Failure occured while attempting to "
+				"initialize the eCryptfs netlink socket\n");
+	}
 out:
 	return rc;
 }
@@ -809,6 +868,7 @@ static void __exit ecryptfs_exit(void)
 	sysfs_remove_file(&ecryptfs_subsys.kset.kobj,
 			  &sysfs_attr_version_str.attr);
 	subsystem_unregister(&ecryptfs_subsys);
+	ecryptfs_release_messaging(ecryptfs_transport);
 	unregister_filesystem(&ecryptfs_fs_type);
 	ecryptfs_free_kmem_caches();
 }
diff --git a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c
new file mode 100644
index 0000000..47d7e7b
--- /dev/null
+++ b/fs/ecryptfs/messaging.c
@@ -0,0 +1,515 @@
+/**
+ * eCryptfs: Linux filesystem encryption layer
+ *
+ * Copyright (C) 2004-2006 International Business Machines Corp.
+ *   Author(s): Michael A. Halcrow <mhalcrow@us.ibm.com>
+ *		Tyler Hicks <tyhicks@ou.edu>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include "ecryptfs_kernel.h"
+
+static LIST_HEAD(ecryptfs_msg_ctx_free_list);
+static LIST_HEAD(ecryptfs_msg_ctx_alloc_list);
+static struct mutex ecryptfs_msg_ctx_lists_mux;
+
+static struct hlist_head *ecryptfs_daemon_id_hash;
+static struct mutex ecryptfs_daemon_id_hash_mux;
+static int ecryptfs_hash_buckets;
+#define ecryptfs_uid_hash(uid) \
+        hash_long((unsigned long)uid, ecryptfs_hash_buckets)
+
+static unsigned int ecryptfs_msg_counter;
+static struct ecryptfs_msg_ctx *ecryptfs_msg_ctx_arr;
+
+/**
+ * ecryptfs_acquire_free_msg_ctx
+ * @msg_ctx: The context that was acquired from the free list
+ *
+ * Acquires a context element from the free list and locks the mutex
+ * on the context.  Returns zero on success; non-zero on error or upon
+ * failure to acquire a free context element.  Be sure to lock the
+ * list mutex before calling.
+ */
+static int ecryptfs_acquire_free_msg_ctx(struct ecryptfs_msg_ctx **msg_ctx)
+{
+	struct list_head *p;
+	int rc;
+
+	if (list_empty(&ecryptfs_msg_ctx_free_list)) {
+		ecryptfs_printk(KERN_WARNING, "The eCryptfs free "
+				"context list is empty.  It may be helpful to "
+				"specify the ecryptfs_message_buf_len "
+				"parameter to be greater than the current "
+				"value of [%d]\n", ecryptfs_message_buf_len);
+		rc = -ENOMEM;
+		goto out;
+	}
+	list_for_each(p, &ecryptfs_msg_ctx_free_list) {
+		*msg_ctx = list_entry(p, struct ecryptfs_msg_ctx, node);
+		if (mutex_trylock(&(*msg_ctx)->mux)) {
+			(*msg_ctx)->task = current;
+			rc = 0;
+			goto out;
+		}
+	}
+	rc = -ENOMEM;
+out:
+	return rc;
+}
+
+/**
+ * ecryptfs_msg_ctx_free_to_alloc
+ * @msg_ctx: The context to move from the free list to the alloc list
+ *
+ * Be sure to lock the list mutex and the context mutex before
+ * calling.
+ */
+static void ecryptfs_msg_ctx_free_to_alloc(struct ecryptfs_msg_ctx *msg_ctx)
+{
+	list_move(&msg_ctx->node, &ecryptfs_msg_ctx_alloc_list);
+	msg_ctx->state = ECRYPTFS_MSG_CTX_STATE_PENDING;
+	msg_ctx->counter = ++ecryptfs_msg_counter;
+}
+
+/**
+ * ecryptfs_msg_ctx_alloc_to_free
+ * @msg_ctx: The context to move from the alloc list to the free list
+ *
+ * Be sure to lock the list mutex and the context mutex before
+ * calling.
+ */
+static void ecryptfs_msg_ctx_alloc_to_free(struct ecryptfs_msg_ctx *msg_ctx)
+{
+	list_move(&(msg_ctx->node), &ecryptfs_msg_ctx_free_list);
+	if (msg_ctx->msg)
+		kfree(msg_ctx->msg);
+	msg_ctx->state = ECRYPTFS_MSG_CTX_STATE_FREE;
+}
+
+/**
+ * ecryptfs_find_daemon_id
+ * @uid: The user id which maps to the desired daemon id
+ * @id: If return value is zero, points to the desired daemon id
+ *      pointer
+ *
+ * Search the hash list for the given user id.  Returns zero if the
+ * user id exists in the list; non-zero otherwise.  The daemon id hash
+ * mutex should be held before calling this function.
+ */
+static int ecryptfs_find_daemon_id(uid_t uid, struct ecryptfs_daemon_id **id)
+{
+	struct hlist_node *elem;
+	int rc;
+
+	hlist_for_each_entry(*id, elem,
+			     &ecryptfs_daemon_id_hash[ecryptfs_uid_hash(uid)],
+			     id_chain) {
+		if ((*id)->uid == uid) {
+			rc = 0;
+			goto out;
+		}
+	}
+	rc = -EINVAL;
+out:
+	return rc;
+}
+
+static int ecryptfs_send_raw_message(unsigned int transport, u16 msg_type,
+				     pid_t pid)
+{
+	int rc;
+
+	switch(transport) {
+	case ECRYPTFS_TRANSPORT_NETLINK:
+		rc = ecryptfs_send_netlink(NULL, 0, NULL, msg_type, 0, pid);
+		break;
+	case ECRYPTFS_TRANSPORT_CONNECTOR:
+	case ECRYPTFS_TRANSPORT_RELAYFS:
+	default:
+		rc = -ENOSYS;
+	}
+	return rc;
+}
+
+/**
+ * ecryptfs_process_helo
+ * @transport: The underlying transport (netlink, etc.)
+ * @uid: The user ID owner of the message
+ * @pid: The process ID for the userspace program that sent the
+ *       message
+ *
+ * Adds the uid and pid values to the daemon id hash.  If a uid
+ * already has a daemon pid registered, the daemon will be
+ * unregistered before the new daemon id is put into the hash list.
+ * Returns zero after adding a new daemon id to the hash list;
+ * non-zero otherwise.
+ */
+int ecryptfs_process_helo(unsigned int transport, uid_t uid, pid_t pid)
+{
+	struct ecryptfs_daemon_id *new_id;
+	struct ecryptfs_daemon_id *old_id;
+	int rc;
+
+	mutex_lock(&ecryptfs_daemon_id_hash_mux);
+	new_id = kmalloc(sizeof(*new_id), GFP_KERNEL);
+	if (!new_id) {
+		rc = -ENOMEM;
+		ecryptfs_printk(KERN_ERR, "Failed to allocate memory; unable "
+				"to register daemon [%d] for user\n", pid, uid);
+		goto unlock;
+	}
+	if (!ecryptfs_find_daemon_id(uid, &old_id)) {
+		printk(KERN_WARNING "Received request from user [%d] "
+		       "to register daemon [%d]; unregistering daemon "
+		       "[%d]\n", uid, pid, old_id->pid);
+		hlist_del(&old_id->id_chain);
+		rc = ecryptfs_send_raw_message(transport, ECRYPTFS_NLMSG_QUIT,
+					       old_id->pid);
+		if (rc)
+			printk(KERN_WARNING "Failed to send QUIT "
+			       "message to daemon [%d]; rc = [%d]\n",
+			       old_id->pid, rc);
+		kfree(old_id);
+	}
+	new_id->uid = uid;
+	new_id->pid = pid;
+	hlist_add_head(&new_id->id_chain,
+		       &ecryptfs_daemon_id_hash[ecryptfs_uid_hash(uid)]);
+	rc = 0;
+unlock:
+	mutex_unlock(&ecryptfs_daemon_id_hash_mux);
+	return rc;
+}
+
+/**
+ * ecryptfs_process_quit
+ * @uid: The user ID owner of the message
+ * @pid: The process ID for the userspace program that sent the
+ *       message
+ *
+ * Deletes the corresponding daemon id for the given uid and pid, if
+ * it is the registered that is requesting the deletion. Returns zero
+ * after deleting the desired daemon id; non-zero otherwise.
+ */
+int ecryptfs_process_quit(uid_t uid, pid_t pid)
+{
+	struct ecryptfs_daemon_id *id;
+	int rc;
+
+	mutex_lock(&ecryptfs_daemon_id_hash_mux);
+	if (ecryptfs_find_daemon_id(uid, &id)) {
+		rc = -EINVAL;
+		ecryptfs_printk(KERN_ERR, "Received request from user [%d] to "
+				"unregister unrecognized daemon [%d]\n", uid,
+				pid);
+		goto unlock;
+	}
+	if (id->pid != pid) {
+		rc = -EINVAL;
+		ecryptfs_printk(KERN_WARNING, "Received request from user [%d] "
+				"with pid [%d] to unregister daemon [%d]\n",
+				uid, pid, id->pid);
+		goto unlock;
+	}
+	hlist_del(&id->id_chain);
+	kfree(id);
+	rc = 0;
+unlock:
+	mutex_unlock(&ecryptfs_daemon_id_hash_mux);
+	return rc;
+}
+
+/**
+ * ecryptfs_process_reponse
+ * @msg: The ecryptfs message received; the caller should sanity check
+ *       msg->data_len
+ * @pid: The process ID of the userspace application that sent the
+ *       message
+ * @seq: The sequence number of the message
+ *
+ * Processes a response message after sending a operation request to
+ * userspace. Returns zero upon delivery to desired context element;
+ * non-zero upon delivery failure or error.
+ */
+int ecryptfs_process_response(struct ecryptfs_message *msg, uid_t uid,
+			      pid_t pid, u32 seq)
+{
+	struct ecryptfs_daemon_id *id;
+	struct ecryptfs_msg_ctx *msg_ctx;
+	int msg_size;
+	int rc;
+
+	if (msg->index >= ecryptfs_message_buf_len) {
+		rc = -EINVAL;
+		ecryptfs_printk(KERN_ERR, "Attempt to reference "
+				"context buffer at index [%d]; maximum "
+				"allowable is [%d]\n", msg->index,
+				(ecryptfs_message_buf_len - 1));
+		goto out;
+	}
+	msg_ctx = &ecryptfs_msg_ctx_arr[msg->index];
+	mutex_lock(&msg_ctx->mux);
+	if (ecryptfs_find_daemon_id(msg_ctx->task->euid, &id)) {
+		rc = -EBADMSG;
+		ecryptfs_printk(KERN_WARNING, "User [%d] received a "
+				"message response from process [%d] but does "
+				"not have a registered daemon\n",
+				msg_ctx->task->euid, pid);
+		goto wake_up;
+	}
+	if (msg_ctx->task->euid != uid) {
+		rc = -EBADMSG;
+		ecryptfs_printk(KERN_WARNING, "Received message from user "
+				"[%d]; expected message from user [%d]\n",
+				uid, msg_ctx->task->euid);
+		goto unlock;
+	}
+	if (id->pid != pid) {
+		rc = -EBADMSG;
+		ecryptfs_printk(KERN_ERR, "User [%d] received a "
+				"message response from an unrecognized "
+				"process [%d]\n", msg_ctx->task->euid, pid);
+		goto unlock;
+	}
+	if (msg_ctx->state != ECRYPTFS_MSG_CTX_STATE_PENDING) {
+		rc = -EINVAL;
+		ecryptfs_printk(KERN_WARNING, "Desired context element is not "
+				"pending a response\n");
+		goto unlock;
+	} else if (msg_ctx->counter != seq) {
+		rc = -EINVAL;
+		ecryptfs_printk(KERN_WARNING, "Invalid message sequence; "
+				"expected [%d]; received [%d]\n",
+				msg_ctx->counter, seq);
+		goto unlock;
+	}
+	msg_size = sizeof(*msg) + msg->data_len;
+	msg_ctx->msg = kmalloc(msg_size, GFP_KERNEL);
+	if (!msg_ctx->msg) {
+		rc = -ENOMEM;
+		ecryptfs_printk(KERN_ERR, "Failed to allocate memory\n");
+		goto unlock;
+	}
+	memcpy(msg_ctx->msg, msg, msg_size);
+	msg_ctx->state = ECRYPTFS_MSG_CTX_STATE_DONE;
+	rc = 0;
+wake_up:
+	wake_up_process(msg_ctx->task);
+unlock:
+	mutex_unlock(&msg_ctx->mux);
+out:
+	return rc;
+}
+
+/**
+ * ecryptfs_send_message
+ * @transport: The transport over which to send the message (i.e.,
+ *             netlink)
+ * @data: The data to send
+ * @data_len: The length of data
+ * @msg_ctx: The message context allocated for the send
+ */
+int ecryptfs_send_message(unsigned int transport, char *data, int data_len,
+			  struct ecryptfs_msg_ctx **msg_ctx)
+{
+	struct ecryptfs_daemon_id *id;
+	int rc;
+
+	mutex_lock(&ecryptfs_daemon_id_hash_mux);
+	if (ecryptfs_find_daemon_id(current->euid, &id)) {
+		mutex_unlock(&ecryptfs_daemon_id_hash_mux);
+		rc = -ENOTCONN;
+		ecryptfs_printk(KERN_ERR, "User [%d] does not have a daemon "
+				"registered\n", current->euid);
+		goto out;
+	}
+	mutex_unlock(&ecryptfs_daemon_id_hash_mux);
+	mutex_lock(&ecryptfs_msg_ctx_lists_mux);
+	rc = ecryptfs_acquire_free_msg_ctx(msg_ctx);
+	if (rc) {
+		mutex_unlock(&ecryptfs_msg_ctx_lists_mux);
+		ecryptfs_printk(KERN_WARNING, "Could not claim a free "
+				"context element\n");
+		goto out;
+	}
+	ecryptfs_msg_ctx_free_to_alloc(*msg_ctx);
+	mutex_unlock(&(*msg_ctx)->mux);
+	mutex_unlock(&ecryptfs_msg_ctx_lists_mux);
+	switch (transport) {
+	case ECRYPTFS_TRANSPORT_NETLINK:
+		rc = ecryptfs_send_netlink(data, data_len, *msg_ctx,
+					   ECRYPTFS_NLMSG_REQUEST, 0, id->pid);
+		break;
+	case ECRYPTFS_TRANSPORT_CONNECTOR:
+	case ECRYPTFS_TRANSPORT_RELAYFS:
+	default:
+		rc = -ENOSYS;
+	}
+	if (rc) {
+		printk(KERN_ERR "Error attempting to send message to userspace "
+		       "daemon; rc = [%d]\n", rc);
+	}
+out:
+	return rc;
+}
+
+/**
+ * ecryptfs_wait_for_response
+ * @msg_ctx: The context that was assigned when sending a message
+ * @msg: The incoming message from userspace; not set if rc != 0
+ *
+ * Sleeps until awaken by ecryptfs_receive_message or until the amount
+ * of time exceeds ecryptfs_message_wait_timeout.  If zero is
+ * returned, msg will point to a valid message from userspace; a
+ * non-zero value is returned upon failure to receive a message or an
+ * error occurs.
+ */
+int ecryptfs_wait_for_response(struct ecryptfs_msg_ctx *msg_ctx,
+			       struct ecryptfs_message **msg)
+{
+	signed long timeout = ecryptfs_message_wait_timeout * HZ;
+	int rc = 0;
+
+sleep:
+	timeout = schedule_timeout_interruptible(timeout);
+	mutex_lock(&ecryptfs_msg_ctx_lists_mux);
+	mutex_lock(&msg_ctx->mux);
+	if (msg_ctx->state != ECRYPTFS_MSG_CTX_STATE_DONE) {
+		if (timeout) {
+			mutex_unlock(&msg_ctx->mux);
+			mutex_unlock(&ecryptfs_msg_ctx_lists_mux);
+			goto sleep;
+		}
+		rc = -ENOMSG;
+	} else {
+		*msg = msg_ctx->msg;
+		msg_ctx->msg = NULL;
+	}
+	ecryptfs_msg_ctx_alloc_to_free(msg_ctx);
+	mutex_unlock(&msg_ctx->mux);
+	mutex_unlock(&ecryptfs_msg_ctx_lists_mux);
+	return rc;
+}
+
+int ecryptfs_init_messaging(unsigned int transport)
+{
+	int i;
+	int rc = 0;
+
+	if (ecryptfs_number_of_users > ECRYPTFS_MAX_NUM_USERS) {
+		ecryptfs_number_of_users = ECRYPTFS_MAX_NUM_USERS;
+		ecryptfs_printk(KERN_WARNING, "Specified number of users is "
+				"too large, defaulting to [%d] users\n",
+				ecryptfs_number_of_users);
+	}
+	mutex_init(&ecryptfs_daemon_id_hash_mux);
+	mutex_lock(&ecryptfs_daemon_id_hash_mux);
+	ecryptfs_hash_buckets = 0;
+	while (ecryptfs_number_of_users >> ++ecryptfs_hash_buckets);
+	ecryptfs_daemon_id_hash = kmalloc(sizeof(struct hlist_head)
+					  * ecryptfs_hash_buckets, GFP_KERNEL);
+	if (!ecryptfs_daemon_id_hash) {
+		rc = -ENOMEM;
+		ecryptfs_printk(KERN_ERR, "Failed to allocate memory\n");
+		goto out;
+	}
+	for (i = 0; i < ecryptfs_hash_buckets; i++)
+		INIT_HLIST_HEAD(&ecryptfs_daemon_id_hash[i]);
+	mutex_unlock(&ecryptfs_daemon_id_hash_mux);
+
+	ecryptfs_msg_ctx_arr = kmalloc((sizeof(struct ecryptfs_msg_ctx)
+				      * ecryptfs_message_buf_len), GFP_KERNEL);
+	if (!ecryptfs_msg_ctx_arr) {
+		rc = -ENOMEM;
+		ecryptfs_printk(KERN_ERR, "Failed to allocate memory\n");
+		goto out;
+	}
+	mutex_init(&ecryptfs_msg_ctx_lists_mux);
+	mutex_lock(&ecryptfs_msg_ctx_lists_mux);
+	ecryptfs_msg_counter = 0;
+	for (i = 0; i < ecryptfs_message_buf_len; i++) {
+		INIT_LIST_HEAD(&ecryptfs_msg_ctx_arr[i].node);
+		mutex_init(&ecryptfs_msg_ctx_arr[i].mux);
+		mutex_lock(&ecryptfs_msg_ctx_arr[i].mux);
+		ecryptfs_msg_ctx_arr[i].index = i;
+		ecryptfs_msg_ctx_arr[i].state = ECRYPTFS_MSG_CTX_STATE_FREE;
+		ecryptfs_msg_ctx_arr[i].counter = 0;
+		ecryptfs_msg_ctx_arr[i].task = NULL;
+		ecryptfs_msg_ctx_arr[i].msg = NULL;
+		list_add_tail(&ecryptfs_msg_ctx_arr[i].node,
+			      &ecryptfs_msg_ctx_free_list);
+		mutex_unlock(&ecryptfs_msg_ctx_arr[i].mux);
+	}
+	mutex_unlock(&ecryptfs_msg_ctx_lists_mux);
+	switch(transport) {
+	case ECRYPTFS_TRANSPORT_NETLINK:
+		rc = ecryptfs_init_netlink();
+		if (rc)
+			ecryptfs_release_messaging(transport);
+		break;
+	case ECRYPTFS_TRANSPORT_CONNECTOR:
+	case ECRYPTFS_TRANSPORT_RELAYFS:
+	default:
+		rc = -ENOSYS;
+	}
+out:
+	return rc;
+}
+
+void ecryptfs_release_messaging(unsigned int transport)
+{
+	if (ecryptfs_msg_ctx_arr) {
+		int i;
+
+		mutex_lock(&ecryptfs_msg_ctx_lists_mux);
+		for (i = 0; i < ecryptfs_message_buf_len; i++) {
+			mutex_lock(&ecryptfs_msg_ctx_arr[i].mux);
+			if (ecryptfs_msg_ctx_arr[i].msg)
+				kfree(ecryptfs_msg_ctx_arr[i].msg);
+			mutex_unlock(&ecryptfs_msg_ctx_arr[i].mux);
+		}
+		kfree(ecryptfs_msg_ctx_arr);
+		mutex_unlock(&ecryptfs_msg_ctx_lists_mux);
+	}
+	if (ecryptfs_daemon_id_hash) {
+		struct hlist_node *elem;
+		struct ecryptfs_daemon_id *id;
+		int i;
+
+		mutex_lock(&ecryptfs_daemon_id_hash_mux);
+		for (i = 0; i < ecryptfs_hash_buckets; i++) {
+			hlist_for_each_entry(id, elem,
+					     &ecryptfs_daemon_id_hash[i],
+					     id_chain) {
+				hlist_del(elem);
+				kfree(id);
+			}
+		}
+		kfree(ecryptfs_daemon_id_hash);
+		mutex_unlock(&ecryptfs_daemon_id_hash_mux);
+	}
+	switch(transport) {
+	case ECRYPTFS_TRANSPORT_NETLINK:
+		ecryptfs_release_netlink();
+		break;
+	case ECRYPTFS_TRANSPORT_CONNECTOR:
+	case ECRYPTFS_TRANSPORT_RELAYFS:
+	default:
+		break;
+	}
+	return;
+}
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index 06843d2..3a6f65c 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -6,7 +6,7 @@
  *
  * Copyright (C) 1997-2003 Erez Zadok
  * Copyright (C) 2001-2003 Stony Brook University
- * Copyright (C) 2004-2006 International Business Machines Corp.
+ * Copyright (C) 2004-2007 International Business Machines Corp.
  *   Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
  *
  * This program is free software; you can redistribute it and/or
@@ -234,22 +234,13 @@ int ecryptfs_do_readpage(struct file *file, struct page *page,
 		goto out;
 	}
 	wait_on_page_locked(lower_page);
-	page_data = (char *)kmap(page);
-	if (!page_data) {
-		rc = -ENOMEM;
-		ecryptfs_printk(KERN_ERR, "Error mapping page\n");
-		goto out;
-	}
-	lower_page_data = (char *)kmap(lower_page);
-	if (!lower_page_data) {
-		rc = -ENOMEM;
-		ecryptfs_printk(KERN_ERR, "Error mapping page\n");
-		kunmap(page);
-		goto out;
-	}
+	page_data = kmap_atomic(page, KM_USER0);
+	lower_page_data = kmap_atomic(lower_page, KM_USER1);
 	memcpy(page_data, lower_page_data, PAGE_CACHE_SIZE);
-	kunmap(lower_page);
-	kunmap(page);
+	kunmap_atomic(lower_page_data, KM_USER1);
+	flush_dcache_page(lower_page);
+	kunmap_atomic(page_data, KM_USER0);
+	flush_dcache_page(page);
 	rc = 0;
 out:
 	if (likely(lower_page))
@@ -260,6 +251,33 @@ out:
 		ClearPageUptodate(page);
 	return rc;
 }
+/**
+ *   Header Extent:
+ *     Octets 0-7:        Unencrypted file size (big-endian)
+ *     Octets 8-15:       eCryptfs special marker
+ *     Octets 16-19:      Flags
+ *      Octet 16:         File format version number (between 0 and 255)
+ *      Octets 17-18:     Reserved
+ *      Octet 19:         Bit 1 (lsb): Reserved
+ *                        Bit 2: Encrypted?
+ *                        Bits 3-8: Reserved
+ *     Octets 20-23:      Header extent size (big-endian)
+ *     Octets 24-25:      Number of header extents at front of file
+ *                        (big-endian)
+ *     Octet  26:         Begin RFC 2440 authentication token packet set
+ */
+static void set_header_info(char *page_virt,
+			    struct ecryptfs_crypt_stat *crypt_stat)
+{
+	size_t written;
+	int save_num_header_extents_at_front =
+		crypt_stat->num_header_extents_at_front;
+
+	crypt_stat->num_header_extents_at_front = 1;
+	ecryptfs_write_header_metadata(page_virt + 20, crypt_stat, &written);
+	crypt_stat->num_header_extents_at_front =
+		save_num_header_extents_at_front;
+}
 
 /**
  * ecryptfs_readpage
@@ -279,8 +297,8 @@ static int ecryptfs_readpage(struct file *file, struct page *page)
 	crypt_stat = &ecryptfs_inode_to_private(file->f_path.dentry->d_inode)
 			->crypt_stat;
 	if (!crypt_stat
-	    || !ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_ENCRYPTED)
-	    || ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_NEW_FILE)) {
+	    || !(crypt_stat->flags & ECRYPTFS_ENCRYPTED)
+	    || (crypt_stat->flags & ECRYPTFS_NEW_FILE)) {
 		ecryptfs_printk(KERN_DEBUG,
 				"Passing through unencrypted page\n");
 		rc = ecryptfs_do_readpage(file, page, page->index);
@@ -289,10 +307,51 @@ static int ecryptfs_readpage(struct file *file, struct page *page)
 					"[%d]\n", rc);
 			goto out;
 		}
+	} else if (crypt_stat->flags & ECRYPTFS_VIEW_AS_ENCRYPTED) {
+		if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) {
+			int num_pages_in_header_region =
+				(crypt_stat->header_extent_size
+				 / PAGE_CACHE_SIZE);
+
+			if (page->index < num_pages_in_header_region) {
+				char *page_virt;
+
+				page_virt = kmap_atomic(page, KM_USER0);
+				memset(page_virt, 0, PAGE_CACHE_SIZE);
+				if (page->index == 0) {
+					rc = ecryptfs_read_xattr_region(
+						page_virt, file->f_path.dentry);
+					set_header_info(page_virt, crypt_stat);
+				}
+				kunmap_atomic(page_virt, KM_USER0);
+				flush_dcache_page(page);
+				if (rc) {
+					printk(KERN_ERR "Error reading xattr "
+					       "region\n");
+					goto out;
+				}
+			} else {
+				rc = ecryptfs_do_readpage(
+					file, page,
+					(page->index
+					 - num_pages_in_header_region));
+				if (rc) {
+					printk(KERN_ERR "Error reading page; "
+					       "rc = [%d]\n", rc);
+					goto out;
+				}
+			}
+		} else {
+			rc = ecryptfs_do_readpage(file, page, page->index);
+			if (rc) {
+				printk(KERN_ERR "Error reading page; rc = "
+				       "[%d]\n", rc);
+				goto out;
+			}
+		}
 	} else {
 		rc = ecryptfs_decrypt_page(file, page);
 		if (rc) {
-
 			ecryptfs_printk(KERN_ERR, "Error decrypting page; "
 					"rc = [%d]\n", rc);
 			goto out;
@@ -308,30 +367,27 @@ out:
 	return rc;
 }
 
+/**
+ * Called with lower inode mutex held.
+ */
 static int fill_zeros_to_end_of_page(struct page *page, unsigned int to)
 {
 	struct inode *inode = page->mapping->host;
 	int end_byte_in_page;
-	int rc = 0;
 	char *page_virt;
 
-	if ((i_size_read(inode) / PAGE_CACHE_SIZE) == page->index) {
-		end_byte_in_page = i_size_read(inode) % PAGE_CACHE_SIZE;
-		if (to > end_byte_in_page)
-			end_byte_in_page = to;
-		page_virt = kmap(page);
-		if (!page_virt) {
-			rc = -ENOMEM;
-			ecryptfs_printk(KERN_WARNING,
-					"Could not map page\n");
-			goto out;
-		}
-		memset((page_virt + end_byte_in_page), 0,
-		       (PAGE_CACHE_SIZE - end_byte_in_page));
-		kunmap(page);
-	}
+	if ((i_size_read(inode) / PAGE_CACHE_SIZE) != page->index)
+		goto out;
+	end_byte_in_page = i_size_read(inode) % PAGE_CACHE_SIZE;
+	if (to > end_byte_in_page)
+		end_byte_in_page = to;
+	page_virt = kmap_atomic(page, KM_USER0);
+	memset((page_virt + end_byte_in_page), 0,
+	       (PAGE_CACHE_SIZE - end_byte_in_page));
+	kunmap_atomic(page_virt, KM_USER0);
+	flush_dcache_page(page);
 out:
-	return rc;
+	return 0;
 }
 
 static int ecryptfs_prepare_write(struct file *file, struct page *page,
@@ -339,7 +395,6 @@ static int ecryptfs_prepare_write(struct file *file, struct page *page,
 {
 	int rc = 0;
 
-	kmap(page);
 	if (from == 0 && to == PAGE_CACHE_SIZE)
 		goto out;	/* If we are writing a full page, it will be
 				   up to date. */
@@ -349,30 +404,6 @@ out:
 	return rc;
 }
 
-int ecryptfs_grab_and_map_lower_page(struct page **lower_page,
-				     char **lower_virt,
-				     struct inode *lower_inode,
-				     unsigned long lower_page_index)
-{
-	int rc = 0;
-
-	(*lower_page) = grab_cache_page(lower_inode->i_mapping,
-					lower_page_index);
-	if (!(*lower_page)) {
-		ecryptfs_printk(KERN_ERR, "grab_cache_page for "
-				"lower_page_index = [0x%.16x] failed\n",
-				lower_page_index);
-		rc = -EINVAL;
-		goto out;
-	}
-	if (lower_virt)
-		(*lower_virt) = kmap((*lower_page));
-	else
-		kmap((*lower_page));
-out:
-	return rc;
-}
-
 int ecryptfs_writepage_and_release_lower_page(struct page *lower_page,
 					      struct inode *lower_inode,
 					      struct writeback_control *wbc)
@@ -391,11 +422,8 @@ out:
 	return rc;
 }
 
-static void ecryptfs_unmap_and_release_lower_page(struct page *lower_page)
+static void ecryptfs_release_lower_page(struct page *lower_page)
 {
-	kunmap(lower_page);
-	ecryptfs_printk(KERN_DEBUG, "Unlocking lower page with index = "
-			"[0x%.16x]\n", lower_page->index);
 	unlock_page(lower_page);
 	page_cache_release(lower_page);
 }
@@ -407,10 +435,9 @@ static void ecryptfs_unmap_and_release_lower_page(struct page *lower_page)
  *
  * Returns zero on success; non-zero on error.
  */
-int
-ecryptfs_write_inode_size_to_header(struct file *lower_file,
-				    struct inode *lower_inode,
-				    struct inode *inode)
+static int ecryptfs_write_inode_size_to_header(struct file *lower_file,
+					       struct inode *lower_inode,
+					       struct inode *inode)
 {
 	int rc = 0;
 	struct page *header_page;
@@ -418,11 +445,11 @@ ecryptfs_write_inode_size_to_header(struct file *lower_file,
 	const struct address_space_operations *lower_a_ops;
 	u64 file_size;
 
-	rc = ecryptfs_grab_and_map_lower_page(&header_page, &header_virt,
-					      lower_inode, 0);
-	if (rc) {
-		ecryptfs_printk(KERN_ERR, "grab_cache_page for header page "
-				"failed\n");
+	header_page = grab_cache_page(lower_inode->i_mapping, 0);
+	if (!header_page) {
+		ecryptfs_printk(KERN_ERR, "grab_cache_page for "
+				"lower_page_index 0 failed\n");
+		rc = -EINVAL;
 		goto out;
 	}
 	lower_a_ops = lower_inode->i_mapping->a_ops;
@@ -430,18 +457,95 @@ ecryptfs_write_inode_size_to_header(struct file *lower_file,
 	file_size = (u64)i_size_read(inode);
 	ecryptfs_printk(KERN_DEBUG, "Writing size: [0x%.16x]\n", file_size);
 	file_size = cpu_to_be64(file_size);
+	header_virt = kmap_atomic(header_page, KM_USER0);
 	memcpy(header_virt, &file_size, sizeof(u64));
+	kunmap_atomic(header_virt, KM_USER0);
+	flush_dcache_page(header_page);
 	rc = lower_a_ops->commit_write(lower_file, header_page, 0, 8);
 	if (rc < 0)
 		ecryptfs_printk(KERN_ERR, "Error commiting header page "
 				"write\n");
-	ecryptfs_unmap_and_release_lower_page(header_page);
+	ecryptfs_release_lower_page(header_page);
 	lower_inode->i_mtime = lower_inode->i_ctime = CURRENT_TIME;
 	mark_inode_dirty_sync(inode);
 out:
 	return rc;
 }
 
+static int ecryptfs_write_inode_size_to_xattr(struct inode *lower_inode,
+					      struct inode *inode,
+					      struct dentry *ecryptfs_dentry,
+					      int lower_i_mutex_held)
+{
+	ssize_t size;
+	void *xattr_virt;
+	struct dentry *lower_dentry;
+	u64 file_size;
+	int rc;
+
+	xattr_virt = kmem_cache_alloc(ecryptfs_xattr_cache, GFP_KERNEL);
+	if (!xattr_virt) {
+		printk(KERN_ERR "Out of memory whilst attempting to write "
+		       "inode size to xattr\n");
+		rc = -ENOMEM;
+		goto out;
+	}
+	lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
+	if (!lower_dentry->d_inode->i_op->getxattr) {
+		printk(KERN_WARNING
+		       "No support for setting xattr in lower filesystem\n");
+		rc = -ENOSYS;
+		kmem_cache_free(ecryptfs_xattr_cache, xattr_virt);
+		goto out;
+	}
+	if (!lower_i_mutex_held)
+		mutex_lock(&lower_dentry->d_inode->i_mutex);
+	size = lower_dentry->d_inode->i_op->getxattr(lower_dentry,
+						     ECRYPTFS_XATTR_NAME,
+						     xattr_virt,
+						     PAGE_CACHE_SIZE);
+	if (!lower_i_mutex_held)
+		mutex_unlock(&lower_dentry->d_inode->i_mutex);
+	if (size < 0)
+		size = 8;
+	file_size = (u64)i_size_read(inode);
+	file_size = cpu_to_be64(file_size);
+	memcpy(xattr_virt, &file_size, sizeof(u64));
+	if (!lower_i_mutex_held)
+		mutex_lock(&lower_dentry->d_inode->i_mutex);
+	rc = lower_dentry->d_inode->i_op->setxattr(lower_dentry,
+						   ECRYPTFS_XATTR_NAME,
+						   xattr_virt, size, 0);
+	if (!lower_i_mutex_held)
+		mutex_unlock(&lower_dentry->d_inode->i_mutex);
+	if (rc)
+		printk(KERN_ERR "Error whilst attempting to write inode size "
+		       "to lower file xattr; rc = [%d]\n", rc);
+	kmem_cache_free(ecryptfs_xattr_cache, xattr_virt);
+out:
+	return rc;
+}
+
+int
+ecryptfs_write_inode_size_to_metadata(struct file *lower_file,
+				      struct inode *lower_inode,
+				      struct inode *inode,
+				      struct dentry *ecryptfs_dentry,
+				      int lower_i_mutex_held)
+{
+	struct ecryptfs_crypt_stat *crypt_stat;
+
+	crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat;
+	if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR)
+		return ecryptfs_write_inode_size_to_xattr(lower_inode, inode,
+							  ecryptfs_dentry,
+							  lower_i_mutex_held);
+	else
+		return ecryptfs_write_inode_size_to_header(lower_file,
+							   lower_inode,
+							   inode);
+}
+
 int ecryptfs_get_lower_page(struct page **lower_page, struct inode *lower_inode,
 			    struct file *lower_file,
 			    unsigned long lower_page_index, int byte_offset,
@@ -449,10 +553,10 @@ int ecryptfs_get_lower_page(struct page **lower_page, struct inode *lower_inode,
 {
 	int rc = 0;
 
-	rc = ecryptfs_grab_and_map_lower_page(lower_page, NULL, lower_inode,
-					      lower_page_index);
-	if (rc) {
-		ecryptfs_printk(KERN_ERR, "Error attempting to grab and map "
+	*lower_page = grab_cache_page(lower_inode->i_mapping, lower_page_index);
+	if (!(*lower_page)) {
+		rc = -EINVAL;
+		ecryptfs_printk(KERN_ERR, "Error attempting to grab "
 				"lower page with index [0x%.16x]\n",
 				lower_page_index);
 		goto out;
@@ -468,7 +572,7 @@ int ecryptfs_get_lower_page(struct page **lower_page, struct inode *lower_inode,
 	}
 out:
 	if (rc && (*lower_page)) {
-		ecryptfs_unmap_and_release_lower_page(*lower_page);
+		ecryptfs_release_lower_page(*lower_page);
 		(*lower_page) = NULL;
 	}
 	return rc;
@@ -493,7 +597,7 @@ ecryptfs_commit_lower_page(struct page *lower_page, struct inode *lower_inode,
 				"Error committing write; rc = [%d]\n", rc);
 	} else
 		rc = 0;
-	ecryptfs_unmap_and_release_lower_page(lower_page);
+	ecryptfs_release_lower_page(lower_page);
 	return rc;
 }
 
@@ -528,89 +632,7 @@ out:
 	return rc;
 }
 
-static int
-process_new_file(struct ecryptfs_crypt_stat *crypt_stat,
-		 struct file *file, struct inode *inode)
-{
-	struct page *header_page;
-	const struct address_space_operations *lower_a_ops;
-	struct inode *lower_inode;
-	struct file *lower_file;
-	char *header_virt;
-	int rc = 0;
-	int current_header_page = 0;
-	int header_pages;
-	int more_header_data_to_be_written = 1;
-
-	lower_inode = ecryptfs_inode_to_lower(inode);
-	lower_file = ecryptfs_file_to_lower(file);
-	lower_a_ops = lower_inode->i_mapping->a_ops;
-	header_pages = ((crypt_stat->header_extent_size
-			 * crypt_stat->num_header_extents_at_front)
-			/ PAGE_CACHE_SIZE);
-	BUG_ON(header_pages < 1);
-	while (current_header_page < header_pages) {
-		rc = ecryptfs_grab_and_map_lower_page(&header_page,
-						      &header_virt,
-						      lower_inode,
-						      current_header_page);
-		if (rc) {
-			ecryptfs_printk(KERN_ERR, "grab_cache_page for "
-					"header page [%d] failed; rc = [%d]\n",
-					current_header_page, rc);
-			goto out;
-		}
-		rc = lower_a_ops->prepare_write(lower_file, header_page, 0,
-						PAGE_CACHE_SIZE);
-		if (rc) {
-			ecryptfs_printk(KERN_ERR, "Error preparing to write "
-					"header page out; rc = [%d]\n", rc);
-			goto out;
-		}
-		memset(header_virt, 0, PAGE_CACHE_SIZE);
-		if (more_header_data_to_be_written) {
-			rc = ecryptfs_write_headers_virt(header_virt,
-							 crypt_stat,
-							 file->f_dentry);
-			if (rc) {
-				ecryptfs_printk(KERN_WARNING, "Error "
-						"generating header; rc = "
-						"[%d]\n", rc);
-				rc = -EIO;
-				memset(header_virt, 0, PAGE_CACHE_SIZE);
-				ecryptfs_unmap_and_release_lower_page(
-					header_page);
-				goto out;
-			}
-			if (current_header_page == 0)
-				memset(header_virt, 0, 8);
-			more_header_data_to_be_written = 0;
-		}
-		rc = lower_a_ops->commit_write(lower_file, header_page, 0,
-					       PAGE_CACHE_SIZE);
-		ecryptfs_unmap_and_release_lower_page(header_page);
-		if (rc < 0) {
-			ecryptfs_printk(KERN_ERR,
-					"Error commiting header page write; "
-					"rc = [%d]\n", rc);
-			break;
-		}
-		current_header_page++;
-	}
-	if (rc >= 0) {
-		rc = 0;
-		ecryptfs_printk(KERN_DEBUG, "lower_inode->i_blocks = "
-				"[0x%.16x]\n", lower_inode->i_blocks);
-		i_size_write(inode, 0);
-		lower_inode->i_mtime = lower_inode->i_ctime = CURRENT_TIME;
-		mark_inode_dirty_sync(inode);
-	}
-	ecryptfs_printk(KERN_DEBUG, "Clearing ECRYPTFS_NEW_FILE flag in "
-			"crypt_stat at memory location [%p]\n", crypt_stat);
-	ECRYPTFS_CLEAR_FLAG(crypt_stat->flags, ECRYPTFS_NEW_FILE);
-out:
-	return rc;
-}
+struct kmem_cache *ecryptfs_xattr_cache;
 
 /**
  * ecryptfs_commit_write
@@ -640,15 +662,10 @@ static int ecryptfs_commit_write(struct file *file, struct page *page,
 	mutex_lock(&lower_inode->i_mutex);
 	crypt_stat = &ecryptfs_inode_to_private(file->f_path.dentry->d_inode)
 				->crypt_stat;
-	if (ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_NEW_FILE)) {
+	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);
-		rc = process_new_file(crypt_stat, file, inode);
-		if (rc) {
-			ecryptfs_printk(KERN_ERR, "Error processing new "
-					"file; rc = [%d]\n", rc);
-			goto out;
-		}
+		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"
@@ -670,7 +687,6 @@ static int ecryptfs_commit_write(struct file *file, struct page *page,
 				"index [0x%.16x])\n", page->index);
 		goto out;
 	}
-	rc = 0;
 	inode->i_blocks = lower_inode->i_blocks;
 	pos = (page->index << PAGE_CACHE_SHIFT) + to;
 	if (pos > i_size_read(inode)) {
@@ -678,11 +694,15 @@ static int ecryptfs_commit_write(struct file *file, struct page *page,
 		ecryptfs_printk(KERN_DEBUG, "Expanded file size to "
 				"[0x%.16x]\n", i_size_read(inode));
 	}
-	ecryptfs_write_inode_size_to_header(lower_file, lower_inode, inode);
+	rc = ecryptfs_write_inode_size_to_metadata(lower_file, lower_inode,
+						   inode, file->f_dentry,
+						   ECRYPTFS_LOWER_I_MUTEX_HELD);
+	if (rc)
+		printk(KERN_ERR "Error writing inode size to metadata; "
+		       "rc = [%d]\n", rc);
 	lower_inode->i_mtime = lower_inode->i_ctime = CURRENT_TIME;
 	mark_inode_dirty_sync(inode);
 out:
-	kunmap(page); /* mapped in prior call (prepare_write) */
 	if (rc < 0)
 		ClearPageUptodate(page);
 	else
@@ -707,6 +727,7 @@ int write_zeros(struct file *file, pgoff_t index, int start, int num_zeros)
 {
 	int rc = 0;
 	struct page *tmp_page;
+	char *tmp_page_virt;
 
 	tmp_page = ecryptfs_get1page(file, index);
 	if (IS_ERR(tmp_page)) {
@@ -715,28 +736,27 @@ int write_zeros(struct file *file, pgoff_t index, int start, int num_zeros)
 		rc = PTR_ERR(tmp_page);
 		goto out;
 	}
-	kmap(tmp_page);
 	rc = ecryptfs_prepare_write(file, tmp_page, start, start + num_zeros);
 	if (rc) {
 		ecryptfs_printk(KERN_ERR, "Error preparing to write zero's "
 				"to remainder of page at index [0x%.16x]\n",
 				index);
-		kunmap(tmp_page);
 		page_cache_release(tmp_page);
 		goto out;
 	}
-	memset(((char *)page_address(tmp_page) + start), 0, num_zeros);
+	tmp_page_virt = kmap_atomic(tmp_page, KM_USER0);
+	memset(((char *)tmp_page_virt + start), 0, num_zeros);
+	kunmap_atomic(tmp_page_virt, KM_USER0);
+	flush_dcache_page(tmp_page);
 	rc = ecryptfs_commit_write(file, tmp_page, start, start + num_zeros);
 	if (rc < 0) {
 		ecryptfs_printk(KERN_ERR, "Error attempting to write zero's "
 				"to remainder of page at index [0x%.16x]\n",
 				index);
-		kunmap(tmp_page);
 		page_cache_release(tmp_page);
 		goto out;
 	}
 	rc = 0;
-	kunmap(tmp_page);
 	page_cache_release(tmp_page);
 out:
 	return rc;
diff --git a/fs/ecryptfs/netlink.c b/fs/ecryptfs/netlink.c
new file mode 100644
index 0000000..e3aa225
--- /dev/null
+++ b/fs/ecryptfs/netlink.c
@@ -0,0 +1,255 @@
+/**
+ * eCryptfs: Linux filesystem encryption layer
+ *
+ * Copyright (C) 2004-2006 International Business Machines Corp.
+ *   Author(s): Michael A. Halcrow <mhalcrow@us.ibm.com>
+ *		Tyler Hicks <tyhicks@ou.edu>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include <net/sock.h>
+#include <linux/hash.h>
+#include <linux/random.h>
+#include "ecryptfs_kernel.h"
+
+static struct sock *ecryptfs_nl_sock;
+
+/**
+ * ecryptfs_send_netlink
+ * @data: The data to include as the payload
+ * @data_len: The byte count of the data
+ * @msg_ctx: The netlink context that will be used to handle the
+ *          response message
+ * @msg_type: The type of netlink message to send
+ * @msg_flags: The flags to include in the netlink header
+ * @daemon_pid: The process id of the daemon to send the message to
+ *
+ * Sends the data to the specified daemon pid and uses the netlink
+ * context element to store the data needed for validation upon
+ * receiving the response.  The data and the netlink context can be
+ * null if just sending a netlink header is sufficient.  Returns zero
+ * upon sending the message; non-zero upon error.
+ */
+int ecryptfs_send_netlink(char *data, int data_len,
+			  struct ecryptfs_msg_ctx *msg_ctx, u16 msg_type,
+			  u16 msg_flags, pid_t daemon_pid)
+{
+	struct sk_buff *skb;
+	struct nlmsghdr *nlh;
+	struct ecryptfs_message *msg;
+	size_t payload_len;
+	int rc;
+
+	payload_len = ((data && data_len) ? (sizeof(*msg) + data_len) : 0);
+	skb = alloc_skb(NLMSG_SPACE(payload_len), GFP_KERNEL);
+	if (!skb) {
+		rc = -ENOMEM;
+		ecryptfs_printk(KERN_ERR, "Failed to allocate socket buffer\n");
+		goto out;
+	}
+	nlh = NLMSG_PUT(skb, daemon_pid, msg_ctx ? msg_ctx->counter : 0,
+			msg_type, payload_len);
+	nlh->nlmsg_flags = msg_flags;
+	if (msg_ctx && payload_len) {
+		msg = (struct ecryptfs_message *)NLMSG_DATA(nlh);
+		msg->index = msg_ctx->index;
+		msg->data_len = data_len;
+		memcpy(msg->data, data, data_len);
+	}
+	rc = netlink_unicast(ecryptfs_nl_sock, skb, daemon_pid, 0);
+	if (rc < 0) {
+		ecryptfs_printk(KERN_ERR, "Failed to send eCryptfs netlink "
+				"message; rc = [%d]\n", rc);
+		goto out;
+	}
+	rc = 0;
+	goto out;
+nlmsg_failure:
+	rc = -EMSGSIZE;
+	kfree_skb(skb);
+out:
+	return rc;
+}
+
+/**
+ * ecryptfs_process_nl_reponse
+ * @skb: The socket buffer containing the netlink message of state
+ *       RESPONSE
+ *
+ * Processes a response message after sending a operation request to
+ * userspace.  Attempts to assign the msg to a netlink context element
+ * at the index specified in the msg.  The sk_buff and nlmsghdr must
+ * be validated before this function. Returns zero upon delivery to
+ * desired context element; non-zero upon delivery failure or error.
+ */
+static int ecryptfs_process_nl_response(struct sk_buff *skb)
+{
+	struct nlmsghdr *nlh = (struct nlmsghdr*)skb->data;
+	struct ecryptfs_message *msg = NLMSG_DATA(nlh);
+	int rc;
+
+	if (skb->len - NLMSG_HDRLEN - sizeof(*msg) != msg->data_len) {
+		rc = -EINVAL;
+		ecryptfs_printk(KERN_ERR, "Received netlink message with "
+				"incorrectly specified data length\n");
+		goto out;
+	}
+	rc = ecryptfs_process_response(msg, NETLINK_CREDS(skb)->uid,
+				       NETLINK_CREDS(skb)->pid, nlh->nlmsg_seq);
+	if (rc)
+		printk(KERN_ERR
+		       "Error processing response message; rc = [%d]\n", rc);
+out:
+	return rc;
+}
+
+/**
+ * ecryptfs_process_nl_helo
+ * @skb: The socket buffer containing the nlmsghdr in HELO state
+ *
+ * Gets uid and pid of the skb and adds the values to the daemon id
+ * hash. Returns zero after adding a new daemon id to the hash list;
+ * non-zero otherwise.
+ */
+static int ecryptfs_process_nl_helo(struct sk_buff *skb)
+{
+	int rc;
+
+	rc = ecryptfs_process_helo(ECRYPTFS_TRANSPORT_NETLINK,
+				   NETLINK_CREDS(skb)->uid,
+				   NETLINK_CREDS(skb)->pid);
+	if (rc)
+		printk(KERN_WARNING "Error processing HELO; rc = [%d]\n", rc);
+	return rc;
+}
+
+/**
+ * ecryptfs_process_nl_quit
+ * @skb: The socket buffer containing the nlmsghdr in QUIT state
+ *
+ * Gets uid and pid of the skb and deletes the corresponding daemon
+ * id, if it is the registered that is requesting the
+ * deletion. Returns zero after deleting the desired daemon id;
+ * non-zero otherwise.
+ */
+static int ecryptfs_process_nl_quit(struct sk_buff *skb)
+{
+	int rc;
+
+	rc = ecryptfs_process_quit(NETLINK_CREDS(skb)->uid,
+				   NETLINK_CREDS(skb)->pid);
+	if (rc)
+		printk(KERN_WARNING
+		       "Error processing QUIT message; rc = [%d]\n", rc);
+	return rc;
+}
+
+/**
+ * ecryptfs_receive_nl_message
+ *
+ * Callback function called by netlink system when a message arrives.
+ * If the message looks to be valid, then an attempt is made to assign
+ * it to its desired netlink context element and wake up the process
+ * that is waiting for a response.
+ */
+static void ecryptfs_receive_nl_message(struct sock *sk, int len)
+{
+	struct sk_buff *skb;
+	struct nlmsghdr *nlh;
+	int rc = 0;	/* skb_recv_datagram requires this */
+
+receive:
+	skb = skb_recv_datagram(sk, 0, 0, &rc);
+	if (rc == -EINTR)
+		goto receive;
+	else if (rc < 0) {
+		ecryptfs_printk(KERN_ERR, "Error occurred while "
+				"receiving eCryptfs netlink message; "
+				"rc = [%d]\n", rc);
+		return;
+	}
+	nlh = (struct nlmsghdr *)skb->data;
+	if (!NLMSG_OK(nlh, skb->len)) {
+		ecryptfs_printk(KERN_ERR, "Received corrupt netlink "
+				"message\n");
+		goto free;
+	}
+	switch (nlh->nlmsg_type) {
+		case ECRYPTFS_NLMSG_RESPONSE:
+			if (ecryptfs_process_nl_response(skb)) {
+				ecryptfs_printk(KERN_WARNING, "Failed to "
+						"deliver netlink response to "
+						"requesting operation\n");
+			}
+			break;
+		case ECRYPTFS_NLMSG_HELO:
+			if (ecryptfs_process_nl_helo(skb)) {
+				ecryptfs_printk(KERN_WARNING, "Failed to "
+						"fulfill HELO request\n");
+			}
+			break;
+		case ECRYPTFS_NLMSG_QUIT:
+			if (ecryptfs_process_nl_quit(skb)) {
+				ecryptfs_printk(KERN_WARNING, "Failed to "
+						"fulfill QUIT request\n");
+			}
+			break;
+		default:
+			ecryptfs_printk(KERN_WARNING, "Dropping netlink "
+					"message of unrecognized type [%d]\n",
+					nlh->nlmsg_type);
+			break;
+	}
+free:
+	kfree_skb(skb);
+}
+
+/**
+ * ecryptfs_init_netlink
+ *
+ * Initializes the daemon id hash list, netlink context array, and
+ * necessary locks.  Returns zero upon success; non-zero upon error.
+ */
+int ecryptfs_init_netlink(void)
+{
+	int rc;
+
+	ecryptfs_nl_sock = netlink_kernel_create(NETLINK_ECRYPTFS, 0,
+						 ecryptfs_receive_nl_message,
+						 THIS_MODULE);
+	if (!ecryptfs_nl_sock) {
+		rc = -EIO;
+		ecryptfs_printk(KERN_ERR, "Failed to create netlink socket\n");
+		goto out;
+	}
+	ecryptfs_nl_sock->sk_sndtimeo = ECRYPTFS_DEFAULT_SEND_TIMEOUT;
+	rc = 0;
+out:
+	return rc;
+}
+
+/**
+ * ecryptfs_release_netlink
+ *
+ * Frees all memory used by the netlink context array and releases the
+ * netlink socket.
+ */
+void ecryptfs_release_netlink(void)
+{
+	if (ecryptfs_nl_sock && ecryptfs_nl_sock->sk_socket)
+		sock_release(ecryptfs_nl_sock->sk_socket);
+	ecryptfs_nl_sock = NULL;
+}
diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c
index eaa5daa..7b3f0cc 100644
--- a/fs/ecryptfs/super.c
+++ b/fs/ecryptfs/super.c
@@ -168,7 +168,7 @@ out:
 	return rc;
 }
 
-struct super_operations ecryptfs_sops = {
+const struct super_operations ecryptfs_sops = {
 	.alloc_inode = ecryptfs_alloc_inode,
 	.destroy_inode = ecryptfs_destroy_inode,
 	.drop_inode = generic_delete_inode,
diff --git a/fs/efs/dir.c b/fs/efs/dir.c
index b46c488..dfb5cb4 100644
--- a/fs/efs/dir.c
+++ b/fs/efs/dir.c
@@ -15,7 +15,7 @@ const struct file_operations efs_dir_operations = {
 	.readdir	= efs_readdir,
 };
 
-struct inode_operations efs_dir_inode_operations = {
+const struct inode_operations efs_dir_inode_operations = {
 	.lookup		= efs_lookup,
 };
 
diff --git a/fs/efs/super.c b/fs/efs/super.c
index dfebf21..c2235e4 100644
--- a/fs/efs/super.c
+++ b/fs/efs/super.c
@@ -105,7 +105,7 @@ static int efs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations efs_superblock_operations = {
+static const struct super_operations efs_superblock_operations = {
 	.alloc_inode	= efs_alloc_inode,
 	.destroy_inode	= efs_destroy_inode,
 	.read_inode	= efs_read_inode,
diff --git a/fs/exec.c b/fs/exec.c
index 11fe93f..7e36c6f 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -405,12 +405,10 @@ int setup_arg_pages(struct linux_binprm *bprm,
 		bprm->loader += stack_base;
 	bprm->exec += stack_base;
 
-	mpnt = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+	mpnt = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
 	if (!mpnt)
 		return -ENOMEM;
 
-	memset(mpnt, 0, sizeof(*mpnt));
-
 	down_write(&mm->mmap_sem);
 	{
 		mpnt->vm_mm = mm;
diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index 0b02ba9..e89bfc8 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -368,6 +368,14 @@ struct ext2_dir_entry_2 * ext2_find_entry (struct inode * dir,
 		}
 		if (++n >= npages)
 			n = 0;
+		/* next page is past the blocks we've got */
+		if (unlikely(n > (dir->i_blocks >> (PAGE_CACHE_SHIFT - 9)))) {
+			ext2_error(dir->i_sb, __FUNCTION__,
+				"dir %lu size %lld exceeds block count %llu",
+				dir->i_ino, dir->i_size,
+				(unsigned long long)dir->i_blocks);
+			goto out;
+		}
 	} while (n != start);
 out:
 	return NULL;
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index c19ac15..e2a0ea5 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -158,7 +158,7 @@ extern void ext2_write_super (struct super_block *);
 extern const struct file_operations ext2_dir_operations;
 
 /* file.c */
-extern struct inode_operations ext2_file_inode_operations;
+extern const struct inode_operations ext2_file_inode_operations;
 extern const struct file_operations ext2_file_operations;
 extern const struct file_operations ext2_xip_file_operations;
 
@@ -168,9 +168,9 @@ extern const struct address_space_operations ext2_aops_xip;
 extern const struct address_space_operations ext2_nobh_aops;
 
 /* namei.c */
-extern struct inode_operations ext2_dir_inode_operations;
-extern struct inode_operations ext2_special_inode_operations;
+extern const struct inode_operations ext2_dir_inode_operations;
+extern const struct inode_operations ext2_special_inode_operations;
 
 /* symlink.c */
-extern struct inode_operations ext2_fast_symlink_inode_operations;
-extern struct inode_operations ext2_symlink_inode_operations;
+extern const struct inode_operations ext2_fast_symlink_inode_operations;
+extern const struct inode_operations ext2_symlink_inode_operations;
diff --git a/fs/ext2/file.c b/fs/ext2/file.c
index 2dba473..566d4e2 100644
--- a/fs/ext2/file.c
+++ b/fs/ext2/file.c
@@ -75,7 +75,7 @@ const struct file_operations ext2_xip_file_operations = {
 };
 #endif
 
-struct inode_operations ext2_file_inode_operations = {
+const struct inode_operations ext2_file_inode_operations = {
 	.truncate	= ext2_truncate,
 #ifdef CONFIG_EXT2_FS_XATTR
 	.setxattr	= generic_setxattr,
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index e1af5b4..e69beed 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -373,7 +373,7 @@ out:
 	return err;
 }
 
-struct inode_operations ext2_dir_inode_operations = {
+const struct inode_operations ext2_dir_inode_operations = {
 	.create		= ext2_create,
 	.lookup		= ext2_lookup,
 	.link		= ext2_link,
@@ -393,7 +393,7 @@ struct inode_operations ext2_dir_inode_operations = {
 	.permission	= ext2_permission,
 };
 
-struct inode_operations ext2_special_inode_operations = {
+const struct inode_operations ext2_special_inode_operations = {
 #ifdef CONFIG_EXT2_FS_XATTR
 	.setxattr	= generic_setxattr,
 	.getxattr	= generic_getxattr,
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 6347c2d..a046a41 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -231,7 +231,7 @@ static ssize_t ext2_quota_read(struct super_block *sb, int type, char *data, siz
 static ssize_t ext2_quota_write(struct super_block *sb, int type, const char *data, size_t len, loff_t off);
 #endif
 
-static struct super_operations ext2_sops = {
+static const struct super_operations ext2_sops = {
 	.alloc_inode	= ext2_alloc_inode,
 	.destroy_inode	= ext2_destroy_inode,
 	.read_inode	= ext2_read_inode,
@@ -708,10 +708,14 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
 		set_opt(sbi->s_mount_opt, GRPID);
 	if (def_mount_opts & EXT2_DEFM_UID16)
 		set_opt(sbi->s_mount_opt, NO_UID32);
+#ifdef CONFIG_EXT2_FS_XATTR
 	if (def_mount_opts & EXT2_DEFM_XATTR_USER)
 		set_opt(sbi->s_mount_opt, XATTR_USER);
+#endif
+#ifdef CONFIG_EXT2_FS_POSIX_ACL
 	if (def_mount_opts & EXT2_DEFM_ACL)
 		set_opt(sbi->s_mount_opt, POSIX_ACL);
+#endif
 	
 	if (le16_to_cpu(sbi->s_es->s_errors) == EXT2_ERRORS_PANIC)
 		set_opt(sbi->s_mount_opt, ERRORS_PANIC);
diff --git a/fs/ext2/symlink.c b/fs/ext2/symlink.c
index 1e67d87..4e2426e 100644
--- a/fs/ext2/symlink.c
+++ b/fs/ext2/symlink.c
@@ -28,7 +28,7 @@ static void *ext2_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return NULL;
 }
 
-struct inode_operations ext2_symlink_inode_operations = {
+const struct inode_operations ext2_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
@@ -40,7 +40,7 @@ struct inode_operations ext2_symlink_inode_operations = {
 #endif
 };
  
-struct inode_operations ext2_fast_symlink_inode_operations = {
+const struct inode_operations ext2_fast_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= ext2_follow_link,
 #ifdef CONFIG_EXT2_FS_XATTR
diff --git a/fs/ext3/file.c b/fs/ext3/file.c
index 881f636..1e6f138 100644
--- a/fs/ext3/file.c
+++ b/fs/ext3/file.c
@@ -125,7 +125,7 @@ const struct file_operations ext3_file_operations = {
 	.splice_write	= generic_file_splice_write,
 };
 
-struct inode_operations ext3_file_inode_operations = {
+const struct inode_operations ext3_file_inode_operations = {
 	.truncate	= ext3_truncate,
 	.setattr	= ext3_setattr,
 #ifdef CONFIG_EXT3_FS_XATTR
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index beaf25f..8a824f4 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -947,7 +947,7 @@ out:
 static int ext3_get_block(struct inode *inode, sector_t iblock,
 			struct buffer_head *bh_result, int create)
 {
-	handle_t *handle = journal_current_handle();
+	handle_t *handle = ext3_journal_current_handle();
 	int ret = 0;
 	unsigned max_blocks = bh_result->b_size >> inode->i_blkbits;
 
@@ -1717,7 +1717,7 @@ static ssize_t ext3_direct_IO(int rw, struct kiocb *iocb,
 	/*
 	 * Reacquire the handle: ext3_get_block() can restart the transaction
 	 */
-	handle = journal_current_handle();
+	handle = ext3_journal_current_handle();
 
 out_stop:
 	if (handle) {
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 4df39c4..49159f1 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -1618,21 +1618,6 @@ static int ext3_delete_entry (handle_t *handle,
 	return -ENOENT;
 }
 
-/*
- * ext3_mark_inode_dirty is somewhat expensive, so unlike ext2 we
- * do not perform it in these functions.  We perform it at the call site,
- * if it is needed.
- */
-static inline void ext3_inc_count(handle_t *handle, struct inode *inode)
-{
-	inc_nlink(inode);
-}
-
-static inline void ext3_dec_count(handle_t *handle, struct inode *inode)
-{
-	drop_nlink(inode);
-}
-
 static int ext3_add_nondir(handle_t *handle,
 		struct dentry *dentry, struct inode *inode)
 {
@@ -1642,7 +1627,7 @@ static int ext3_add_nondir(handle_t *handle,
 		d_instantiate(dentry, inode);
 		return 0;
 	}
-	ext3_dec_count(handle, inode);
+	drop_nlink(inode);
 	iput(inode);
 	return err;
 }
@@ -2163,7 +2148,7 @@ retry:
 		err = __page_symlink(inode, symname, l,
 				mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);
 		if (err) {
-			ext3_dec_count(handle, inode);
+			drop_nlink(inode);
 			ext3_mark_inode_dirty(handle, inode);
 			iput (inode);
 			goto out_stop;
@@ -2191,6 +2176,12 @@ static int ext3_link (struct dentry * old_dentry,
 
 	if (inode->i_nlink >= EXT3_LINK_MAX)
 		return -EMLINK;
+	/*
+	 * Return -ENOENT if we've raced with unlink and i_nlink is 0.  Doing
+	 * otherwise has the potential to corrupt the orphan inode list.
+	 */
+	if (inode->i_nlink == 0)
+		return -ENOENT;
 
 retry:
 	handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
@@ -2202,7 +2193,7 @@ retry:
 		handle->h_sync = 1;
 
 	inode->i_ctime = CURRENT_TIME_SEC;
-	ext3_inc_count(handle, inode);
+	inc_nlink(inode);
 	atomic_inc(&inode->i_count);
 
 	err = ext3_add_nondir(handle, dentry, inode);
@@ -2374,7 +2365,7 @@ end_rename:
 /*
  * directories can handle most operations...
  */
-struct inode_operations ext3_dir_inode_operations = {
+const struct inode_operations ext3_dir_inode_operations = {
 	.create		= ext3_create,
 	.lookup		= ext3_lookup,
 	.link		= ext3_link,
@@ -2394,7 +2385,7 @@ struct inode_operations ext3_dir_inode_operations = {
 	.permission	= ext3_permission,
 };
 
-struct inode_operations ext3_special_inode_operations = {
+const struct inode_operations ext3_special_inode_operations = {
 	.setattr	= ext3_setattr,
 #ifdef CONFIG_EXT3_FS_XATTR
 	.setxattr	= generic_setxattr,
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index b348867..4a4fcd6 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -639,7 +639,7 @@ static struct quotactl_ops ext3_qctl_operations = {
 };
 #endif
 
-static struct super_operations ext3_sops = {
+static const struct super_operations ext3_sops = {
 	.alloc_inode	= ext3_alloc_inode,
 	.destroy_inode	= ext3_destroy_inode,
 	.read_inode	= ext3_read_inode,
@@ -1459,10 +1459,14 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
 		set_opt(sbi->s_mount_opt, GRPID);
 	if (def_mount_opts & EXT3_DEFM_UID16)
 		set_opt(sbi->s_mount_opt, NO_UID32);
+#ifdef CONFIG_EXT3_FS_XATTR
 	if (def_mount_opts & EXT3_DEFM_XATTR_USER)
 		set_opt(sbi->s_mount_opt, XATTR_USER);
+#endif
+#ifdef CONFIG_EXT3_FS_POSIX_ACL
 	if (def_mount_opts & EXT3_DEFM_ACL)
 		set_opt(sbi->s_mount_opt, POSIX_ACL);
+#endif
 	if ((def_mount_opts & EXT3_DEFM_JMODE) == EXT3_DEFM_JMODE_DATA)
 		sbi->s_mount_opt |= EXT3_MOUNT_JOURNAL_DATA;
 	else if ((def_mount_opts & EXT3_DEFM_JMODE) == EXT3_DEFM_JMODE_ORDERED)
@@ -2344,6 +2348,22 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
 				err = -EROFS;
 				goto restore_opts;
 			}
+
+			/*
+			 * If we have an unprocessed orphan list hanging
+			 * around from a previously readonly bdev mount,
+			 * require a full umount/remount for now.
+			 */
+			if (es->s_last_orphan) {
+				printk(KERN_WARNING "EXT3-fs: %s: couldn't "
+				       "remount RDWR because of unprocessed "
+				       "orphan inode list.  Please "
+				       "umount/remount instead.\n",
+				       sb->s_id);
+				err = -EINVAL;
+				goto restore_opts;
+			}
+
 			/*
 			 * Mounting a RDONLY partition read-write, so reread
 			 * and store the current valid flag.  (It may have
diff --git a/fs/ext3/symlink.c b/fs/ext3/symlink.c
index 4f79122..ff7b4cc 100644
--- a/fs/ext3/symlink.c
+++ b/fs/ext3/symlink.c
@@ -30,7 +30,7 @@ static void * ext3_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return NULL;
 }
 
-struct inode_operations ext3_symlink_inode_operations = {
+const struct inode_operations ext3_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
@@ -42,7 +42,7 @@ struct inode_operations ext3_symlink_inode_operations = {
 #endif
 };
 
-struct inode_operations ext3_fast_symlink_inode_operations = {
+const struct inode_operations ext3_fast_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= ext3_follow_link,
 #ifdef CONFIG_EXT3_FS_XATTR
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 3bbc24b..3c6c1fd 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -125,7 +125,7 @@ const struct file_operations ext4_file_operations = {
 	.splice_write	= generic_file_splice_write,
 };
 
-struct inode_operations ext4_file_inode_operations = {
+const struct inode_operations ext4_file_inode_operations = {
 	.truncate	= ext4_truncate,
 	.setattr	= ext4_setattr,
 #ifdef CONFIG_EXT4DEV_FS_XATTR
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index a127cc0..fbff4b9 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -946,7 +946,7 @@ out:
 static int ext4_get_block(struct inode *inode, sector_t iblock,
 			struct buffer_head *bh_result, int create)
 {
-	handle_t *handle = journal_current_handle();
+	handle_t *handle = ext4_journal_current_handle();
 	int ret = 0;
 	unsigned max_blocks = bh_result->b_size >> inode->i_blkbits;
 
@@ -1716,7 +1716,7 @@ static ssize_t ext4_direct_IO(int rw, struct kiocb *iocb,
 	/*
 	 * Reacquire the handle: ext4_get_block() can restart the transaction
 	 */
-	handle = journal_current_handle();
+	handle = ext4_journal_current_handle();
 
 out_stop:
 	if (handle) {
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index e5a74a5..e7e1d79 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1616,21 +1616,6 @@ static int ext4_delete_entry (handle_t *handle,
 	return -ENOENT;
 }
 
-/*
- * ext4_mark_inode_dirty is somewhat expensive, so unlike ext2 we
- * do not perform it in these functions.  We perform it at the call site,
- * if it is needed.
- */
-static inline void ext4_inc_count(handle_t *handle, struct inode *inode)
-{
-	inc_nlink(inode);
-}
-
-static inline void ext4_dec_count(handle_t *handle, struct inode *inode)
-{
-	drop_nlink(inode);
-}
-
 static int ext4_add_nondir(handle_t *handle,
 		struct dentry *dentry, struct inode *inode)
 {
@@ -1640,7 +1625,7 @@ static int ext4_add_nondir(handle_t *handle,
 		d_instantiate(dentry, inode);
 		return 0;
 	}
-	ext4_dec_count(handle, inode);
+	drop_nlink(inode);
 	iput(inode);
 	return err;
 }
@@ -2161,7 +2146,7 @@ retry:
 		err = __page_symlink(inode, symname, l,
 				mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);
 		if (err) {
-			ext4_dec_count(handle, inode);
+			drop_nlink(inode);
 			ext4_mark_inode_dirty(handle, inode);
 			iput (inode);
 			goto out_stop;
@@ -2189,6 +2174,12 @@ static int ext4_link (struct dentry * old_dentry,
 
 	if (inode->i_nlink >= EXT4_LINK_MAX)
 		return -EMLINK;
+	/*
+	 * Return -ENOENT if we've raced with unlink and i_nlink is 0.  Doing
+	 * otherwise has the potential to corrupt the orphan inode list.
+	 */
+	if (inode->i_nlink == 0)
+		return -ENOENT;
 
 retry:
 	handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
@@ -2200,7 +2191,7 @@ retry:
 		handle->h_sync = 1;
 
 	inode->i_ctime = CURRENT_TIME_SEC;
-	ext4_inc_count(handle, inode);
+	inc_nlink(inode);
 	atomic_inc(&inode->i_count);
 
 	err = ext4_add_nondir(handle, dentry, inode);
@@ -2372,7 +2363,7 @@ end_rename:
 /*
  * directories can handle most operations...
  */
-struct inode_operations ext4_dir_inode_operations = {
+const struct inode_operations ext4_dir_inode_operations = {
 	.create		= ext4_create,
 	.lookup		= ext4_lookup,
 	.link		= ext4_link,
@@ -2392,7 +2383,7 @@ struct inode_operations ext4_dir_inode_operations = {
 	.permission	= ext4_permission,
 };
 
-struct inode_operations ext4_special_inode_operations = {
+const struct inode_operations ext4_special_inode_operations = {
 	.setattr	= ext4_setattr,
 #ifdef CONFIG_EXT4DEV_FS_XATTR
 	.setxattr	= generic_setxattr,
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 486a641..61c4718 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -690,7 +690,7 @@ static struct quotactl_ops ext4_qctl_operations = {
 };
 #endif
 
-static struct super_operations ext4_sops = {
+static const struct super_operations ext4_sops = {
 	.alloc_inode	= ext4_alloc_inode,
 	.destroy_inode	= ext4_destroy_inode,
 	.read_inode	= ext4_read_inode,
@@ -1518,10 +1518,14 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
 		set_opt(sbi->s_mount_opt, GRPID);
 	if (def_mount_opts & EXT4_DEFM_UID16)
 		set_opt(sbi->s_mount_opt, NO_UID32);
+#ifdef CONFIG_EXT4DEV_FS_XATTR
 	if (def_mount_opts & EXT4_DEFM_XATTR_USER)
 		set_opt(sbi->s_mount_opt, XATTR_USER);
+#endif
+#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
 	if (def_mount_opts & EXT4_DEFM_ACL)
 		set_opt(sbi->s_mount_opt, POSIX_ACL);
+#endif
 	if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_DATA)
 		sbi->s_mount_opt |= EXT4_MOUNT_JOURNAL_DATA;
 	else if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_ORDERED)
@@ -2419,6 +2423,22 @@ static int ext4_remount (struct super_block * sb, int * flags, char * data)
 				err = -EROFS;
 				goto restore_opts;
 			}
+
+			/*
+			 * If we have an unprocessed orphan list hanging
+			 * around from a previously readonly bdev mount,
+			 * require a full umount/remount for now.
+			 */
+			if (es->s_last_orphan) {
+				printk(KERN_WARNING "EXT4-fs: %s: couldn't "
+				       "remount RDWR because of unprocessed "
+				       "orphan inode list.  Please "
+				       "umount/remount instead.\n",
+				       sb->s_id);
+				err = -EINVAL;
+				goto restore_opts;
+			}
+
 			/*
 			 * Mounting a RDONLY partition read-write, so reread
 			 * and store the current valid flag.  (It may have
diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c
index fcf5272..e6f9da4 100644
--- a/fs/ext4/symlink.c
+++ b/fs/ext4/symlink.c
@@ -30,7 +30,7 @@ static void * ext4_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return NULL;
 }
 
-struct inode_operations ext4_symlink_inode_operations = {
+const struct inode_operations ext4_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
@@ -42,7 +42,7 @@ struct inode_operations ext4_symlink_inode_operations = {
 #endif
 };
 
-struct inode_operations ext4_fast_symlink_inode_operations = {
+const struct inode_operations ext4_fast_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= ext4_follow_link,
 #ifdef CONFIG_EXT4DEV_FS_XATTR
diff --git a/fs/fat/file.c b/fs/fat/file.c
index c1237b7..55d3c74 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -312,7 +312,7 @@ int fat_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 }
 EXPORT_SYMBOL_GPL(fat_getattr);
 
-struct inode_operations fat_file_inode_operations = {
+const struct inode_operations fat_file_inode_operations = {
 	.truncate	= fat_truncate,
 	.setattr	= fat_notify_change,
 	.getattr	= fat_getattr,
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index a9e4688..7610735 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -618,7 +618,7 @@ int fat_sync_inode(struct inode *inode)
 EXPORT_SYMBOL_GPL(fat_sync_inode);
 
 static int fat_show_options(struct seq_file *m, struct vfsmount *mnt);
-static struct super_operations fat_sops = {
+static const struct super_operations fat_sops = {
 	.alloc_inode	= fat_alloc_inode,
 	.destroy_inode	= fat_destroy_inode,
 	.write_inode	= fat_write_inode,
@@ -1151,7 +1151,7 @@ static int fat_read_root(struct inode *inode)
  * Read the super block of an MS-DOS FS.
  */
 int fat_fill_super(struct super_block *sb, void *data, int silent,
-		   struct inode_operations *fs_dir_inode_ops, int isvfat)
+		   const struct inode_operations *fs_dir_inode_ops, int isvfat)
 {
 	struct inode *root_inode = NULL;
 	struct buffer_head *bh;
diff --git a/fs/freevxfs/vxfs_extern.h b/fs/freevxfs/vxfs_extern.h
index 1cf1fe8..91ccee8 100644
--- a/fs/freevxfs/vxfs_extern.h
+++ b/fs/freevxfs/vxfs_extern.h
@@ -62,7 +62,7 @@ extern void			vxfs_read_inode(struct inode *);
 extern void			vxfs_clear_inode(struct inode *);
 
 /* vxfs_lookup.c */
-extern struct inode_operations	vxfs_dir_inode_ops;
+extern const struct inode_operations	vxfs_dir_inode_ops;
 extern const struct file_operations	vxfs_dir_operations;
 
 /* vxfs_olt.c */
diff --git a/fs/freevxfs/vxfs_immed.c b/fs/freevxfs/vxfs_immed.c
index 4e25f3f..24b5a77 100644
--- a/fs/freevxfs/vxfs_immed.c
+++ b/fs/freevxfs/vxfs_immed.c
@@ -48,7 +48,7 @@ static int	vxfs_immed_readpage(struct file *, struct page *);
  * Unliked all other operations we do not go through the pagecache,
  * but do all work directly on the inode.
  */
-struct inode_operations vxfs_immed_symlink_iops = {
+const struct inode_operations vxfs_immed_symlink_iops = {
 	.readlink =		generic_readlink,
 	.follow_link =		vxfs_immed_follow_link,
 };
diff --git a/fs/freevxfs/vxfs_inode.c b/fs/freevxfs/vxfs_inode.c
index 0b7ae89..098a915 100644
--- a/fs/freevxfs/vxfs_inode.c
+++ b/fs/freevxfs/vxfs_inode.c
@@ -44,7 +44,7 @@
 extern const struct address_space_operations vxfs_aops;
 extern const struct address_space_operations vxfs_immed_aops;
 
-extern struct inode_operations vxfs_immed_symlink_iops;
+extern const struct inode_operations vxfs_immed_symlink_iops;
 
 struct kmem_cache		*vxfs_inode_cachep;
 
diff --git a/fs/freevxfs/vxfs_lookup.c b/fs/freevxfs/vxfs_lookup.c
index 3995d7f..bf86e54 100644
--- a/fs/freevxfs/vxfs_lookup.c
+++ b/fs/freevxfs/vxfs_lookup.c
@@ -52,7 +52,7 @@
 static struct dentry *	vxfs_lookup(struct inode *, struct dentry *, struct nameidata *);
 static int		vxfs_readdir(struct file *, void *, filldir_t);
 
-struct inode_operations vxfs_dir_inode_ops = {
+const struct inode_operations vxfs_dir_inode_ops = {
 	.lookup =		vxfs_lookup,
 };
 
diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c
index ac28b08..647d600 100644
--- a/fs/freevxfs/vxfs_super.c
+++ b/fs/freevxfs/vxfs_super.c
@@ -59,7 +59,7 @@ static void		vxfs_put_super(struct super_block *);
 static int		vxfs_statfs(struct dentry *, struct kstatfs *);
 static int		vxfs_remount(struct super_block *, int *, char *);
 
-static struct super_operations vxfs_super_ops = {
+static const struct super_operations vxfs_super_ops = {
 	.read_inode =		vxfs_read_inode,
 	.clear_inode =		vxfs_clear_inode,
 	.put_super =		vxfs_put_super,
diff --git a/fs/fuse/control.c b/fs/fuse/control.c
index 1794305..105d4a2 100644
--- a/fs/fuse/control.c
+++ b/fs/fuse/control.c
@@ -73,7 +73,7 @@ static struct dentry *fuse_ctl_add_dentry(struct dentry *parent,
 					  struct fuse_conn *fc,
 					  const char *name,
 					  int mode, int nlink,
-					  struct inode_operations *iop,
+					  const struct inode_operations *iop,
 					  const struct file_operations *fop)
 {
 	struct dentry *dentry;
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 4008047..406bf61 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1242,7 +1242,7 @@ static int fuse_removexattr(struct dentry *entry, const char *name)
 	return err;
 }
 
-static struct inode_operations fuse_dir_inode_operations = {
+static const struct inode_operations fuse_dir_inode_operations = {
 	.lookup		= fuse_lookup,
 	.mkdir		= fuse_mkdir,
 	.symlink	= fuse_symlink,
@@ -1270,7 +1270,7 @@ static const struct file_operations fuse_dir_operations = {
 	.fsync		= fuse_dir_fsync,
 };
 
-static struct inode_operations fuse_common_inode_operations = {
+static const struct inode_operations fuse_common_inode_operations = {
 	.setattr	= fuse_setattr,
 	.permission	= fuse_permission,
 	.getattr	= fuse_getattr,
@@ -1280,7 +1280,7 @@ static struct inode_operations fuse_common_inode_operations = {
 	.removexattr	= fuse_removexattr,
 };
 
-static struct inode_operations fuse_symlink_inode_operations = {
+static const struct inode_operations fuse_symlink_inode_operations = {
 	.setattr	= fuse_setattr,
 	.follow_link	= fuse_follow_link,
 	.put_link	= fuse_put_link,
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index f63efe1..2fd0692 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -69,7 +69,7 @@ void fuse_finish_open(struct inode *inode, struct file *file,
 	if (outarg->open_flags & FOPEN_DIRECT_IO)
 		file->f_op = &fuse_direct_io_file_operations;
 	if (!(outarg->open_flags & FOPEN_KEEP_CACHE))
-		invalidate_inode_pages(inode->i_mapping);
+		invalidate_mapping_pages(inode->i_mapping, 0, -1);
 	ff->fh = outarg->fh;
 	file->private_data = ff;
 }
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 12450d2..5ab8e50 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -112,7 +112,7 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr)
 {
 	struct fuse_conn *fc = get_fuse_conn(inode);
 	if (S_ISREG(inode->i_mode) && i_size_read(inode) != attr->size)
-		invalidate_inode_pages(inode->i_mapping);
+		invalidate_mapping_pages(inode->i_mapping, 0, -1);
 
 	inode->i_ino     = attr->ino;
 	inode->i_mode    = (inode->i_mode & S_IFMT) + (attr->mode & 07777);
@@ -446,7 +446,7 @@ static struct inode *get_root_inode(struct super_block *sb, unsigned mode)
 	return fuse_iget(sb, 1, 0, &attr);
 }
 
-static struct super_operations fuse_super_operations = {
+static const struct super_operations fuse_super_operations = {
 	.alloc_inode    = fuse_alloc_inode,
 	.destroy_inode  = fuse_destroy_inode,
 	.read_inode	= fuse_read_inode,
diff --git a/fs/gfs2/Kconfig b/fs/gfs2/Kconfig
index 6a2ffa2..de8e64c 100644
--- a/fs/gfs2/Kconfig
+++ b/fs/gfs2/Kconfig
@@ -4,44 +4,43 @@ config GFS2_FS
 	select FS_POSIX_ACL
 	select CRC32
 	help
-	A cluster filesystem.
+	  A cluster filesystem.
 
-	Allows a cluster of computers to simultaneously use a block device
-	that is shared between them (with FC, iSCSI, NBD, etc...).  GFS reads
-	and writes to the block device like a local filesystem, but also uses
-	a lock module to allow the computers coordinate their I/O so
-	filesystem consistency is maintained.  One of the nifty features of
-	GFS is perfect consistency -- changes made to the filesystem on one
-	machine show up immediately on all other machines in the cluster.
+	  Allows a cluster of computers to simultaneously use a block device
+	  that is shared between them (with FC, iSCSI, NBD, etc...).  GFS reads
+	  and writes to the block device like a local filesystem, but also uses
+	  a lock module to allow the computers coordinate their I/O so
+	  filesystem consistency is maintained.  One of the nifty features of
+	  GFS is perfect consistency -- changes made to the filesystem on one
+	  machine show up immediately on all other machines in the cluster.
 
-	To use the GFS2 filesystem, you will need to enable one or more of
-	the below locking modules. Documentation and utilities for GFS2 can
-	be found here: http://sources.redhat.com/cluster
+	  To use the GFS2 filesystem, you will need to enable one or more of
+	  the below locking modules. Documentation and utilities for GFS2 can
+	  be found here: http://sources.redhat.com/cluster
 
 config GFS2_FS_LOCKING_NOLOCK
 	tristate "GFS2 \"nolock\" locking module"
 	depends on GFS2_FS
 	help
-	Single node locking module for GFS2.
+	  Single node locking module for GFS2.
 
-	Use this module if you want to use GFS2 on a single node without
-	its clustering features. You can still take advantage of the
-	large file support, and upgrade to running a full cluster later on
-	if required.
+	  Use this module if you want to use GFS2 on a single node without
+	  its clustering features. You can still take advantage of the
+	  large file support, and upgrade to running a full cluster later on
+	  if required.
 
-	If you will only be using GFS2 in cluster mode, you do not need this
-	module.
+	  If you will only be using GFS2 in cluster mode, you do not need this
+	  module.
 
 config GFS2_FS_LOCKING_DLM
 	tristate "GFS2 DLM locking module"
-	depends on GFS2_FS && NET && INET && (IPV6 || IPV6=n)
+	depends on GFS2_FS && SYSFS && NET && INET && (IPV6 || IPV6=n)
 	select IP_SCTP if DLM_SCTP
 	select CONFIGFS_FS
 	select DLM
 	help
-	Multiple node locking module for GFS2
-
-	Most users of GFS2 will require this module. It provides the locking
-	interface between GFS2 and the DLM, which is required to use GFS2
-	in a cluster environment.
+	  Multiple node locking module for GFS2
 
+	  Most users of GFS2 will require this module. It provides the locking
+	  interface between GFS2 and the DLM, which is required to use GFS2
+	  in a cluster environment.
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 8240c1f..113f6c9 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -773,7 +773,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
 			gfs2_free_data(ip, bstart, blen);
 	}
 
-	ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds();
+	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 
 	gfs2_dinode_out(ip, dibh->b_data);
 
@@ -848,7 +848,7 @@ static int do_grow(struct gfs2_inode *ip, u64 size)
 	}
 
 	ip->i_di.di_size = size;
-	ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds();
+	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 
 	error = gfs2_meta_inode_buffer(ip, &dibh);
 	if (error)
@@ -963,7 +963,7 @@ static int trunc_start(struct gfs2_inode *ip, u64 size)
 
 	if (gfs2_is_stuffed(ip)) {
 		ip->i_di.di_size = size;
-		ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds();
+		ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 		gfs2_trans_add_bh(ip->i_gl, dibh, 1);
 		gfs2_dinode_out(ip, dibh->b_data);
 		gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode) + size);
@@ -975,7 +975,7 @@ static int trunc_start(struct gfs2_inode *ip, u64 size)
 
 		if (!error) {
 			ip->i_di.di_size = size;
-			ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds();
+			ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 			ip->i_di.di_flags |= GFS2_DIF_TRUNC_IN_PROG;
 			gfs2_trans_add_bh(ip->i_gl, dibh, 1);
 			gfs2_dinode_out(ip, dibh->b_data);
@@ -1048,7 +1048,7 @@ static int trunc_end(struct gfs2_inode *ip)
 			ip->i_num.no_addr;
 		gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
 	}
-	ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds();
+	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 	ip->i_di.di_flags &= ~GFS2_DIF_TRUNC_IN_PROG;
 
 	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index 0fdcb77..c93ca8f 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -131,7 +131,7 @@ static int gfs2_dir_write_stuffed(struct gfs2_inode *ip, const char *buf,
 	memcpy(dibh->b_data + offset + sizeof(struct gfs2_dinode), buf, size);
 	if (ip->i_di.di_size < offset + size)
 		ip->i_di.di_size = offset + size;
-	ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds();
+	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 	gfs2_dinode_out(ip, dibh->b_data);
 
 	brelse(dibh);
@@ -229,7 +229,7 @@ out:
 
 	if (ip->i_di.di_size < offset + copied)
 		ip->i_di.di_size = offset + copied;
-	ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds();
+	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 
 	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
 	gfs2_dinode_out(ip, dibh->b_data);
@@ -1198,12 +1198,11 @@ static int compare_dents(const void *a, const void *b)
  */
 
 static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
-			   void *opaque, gfs2_filldir_t filldir,
+			   void *opaque, filldir_t filldir,
 			   const struct gfs2_dirent **darr, u32 entries,
 			   int *copied)
 {
 	const struct gfs2_dirent *dent, *dent_next;
-	struct gfs2_inum_host inum;
 	u64 off, off_next;
 	unsigned int x, y;
 	int run = 0;
@@ -1240,11 +1239,9 @@ static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
 			*offset = off;
 		}
 
-		gfs2_inum_in(&inum, (char *)&dent->de_inum);
-
 		error = filldir(opaque, (const char *)(dent + 1),
 				be16_to_cpu(dent->de_name_len),
-				off, &inum,
+				off, be64_to_cpu(dent->de_inum.no_addr),
 				be16_to_cpu(dent->de_type));
 		if (error)
 			return 1;
@@ -1262,8 +1259,8 @@ static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
 }
 
 static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
-			      gfs2_filldir_t filldir, int *copied,
-			      unsigned *depth, u64 leaf_no)
+			      filldir_t filldir, int *copied, unsigned *depth,
+			      u64 leaf_no)
 {
 	struct gfs2_inode *ip = GFS2_I(inode);
 	struct buffer_head *bh;
@@ -1343,7 +1340,7 @@ out:
  */
 
 static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
-		      gfs2_filldir_t filldir)
+		      filldir_t filldir)
 {
 	struct gfs2_inode *dip = GFS2_I(inode);
 	struct gfs2_sbd *sdp = GFS2_SB(inode);
@@ -1402,7 +1399,7 @@ out:
 }
 
 int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
-		  gfs2_filldir_t filldir)
+		  filldir_t filldir)
 {
 	struct gfs2_inode *dip = GFS2_I(inode);
 	struct dirent_gather g;
@@ -1568,7 +1565,7 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name,
 				break;
 			gfs2_trans_add_bh(ip->i_gl, bh, 1);
 			ip->i_di.di_entries++;
-			ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds();
+			ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 			gfs2_dinode_out(ip, bh->b_data);
 			brelse(bh);
 			error = 0;
@@ -1654,7 +1651,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name)
 		gfs2_consist_inode(dip);
 	gfs2_trans_add_bh(dip->i_gl, bh, 1);
 	dip->i_di.di_entries--;
-	dip->i_inode.i_mtime.tv_sec = dip->i_inode.i_ctime.tv_sec = get_seconds();
+	dip->i_inode.i_mtime = dip->i_inode.i_ctime = CURRENT_TIME_SEC;
 	gfs2_dinode_out(dip, bh->b_data);
 	brelse(bh);
 	mark_inode_dirty(&dip->i_inode);
@@ -1702,7 +1699,7 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
 		gfs2_trans_add_bh(dip->i_gl, bh, 1);
 	}
 
-	dip->i_inode.i_mtime.tv_sec = dip->i_inode.i_ctime.tv_sec = get_seconds();
+	dip->i_inode.i_mtime = dip->i_inode.i_ctime = CURRENT_TIME_SEC;
 	gfs2_dinode_out(dip, bh->b_data);
 	brelse(bh);
 	return 0;
diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h
index b21b336..48fe890 100644
--- a/fs/gfs2/dir.h
+++ b/fs/gfs2/dir.h
@@ -16,30 +16,13 @@ struct inode;
 struct gfs2_inode;
 struct gfs2_inum;
 
-/**
- * gfs2_filldir_t - Report a directory entry to the caller of gfs2_dir_read()
- * @opaque: opaque data used by the function
- * @name: the name of the directory entry
- * @length: the length of the name
- * @offset: the entry's offset in the directory
- * @inum: the inode number the entry points to
- * @type: the type of inode the entry points to
- *
- * Returns: 0 on success, 1 if buffer full
- */
-
-typedef int (*gfs2_filldir_t) (void *opaque,
-			      const char *name, unsigned int length,
-			      u64 offset,
-			      struct gfs2_inum_host *inum, unsigned int type);
-
 int gfs2_dir_search(struct inode *dir, const struct qstr *filename,
 		    struct gfs2_inum_host *inum, unsigned int *type);
 int gfs2_dir_add(struct inode *inode, const struct qstr *filename,
 		 const struct gfs2_inum_host *inum, unsigned int type);
 int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *filename);
-int gfs2_dir_read(struct inode *inode, u64 * offset, void *opaque,
-		  gfs2_filldir_t filldir);
+int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
+		  filldir_t filldir);
 int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
 		   struct gfs2_inum_host *new_inum, unsigned int new_type);
 
diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c
index ebebbdc..0c83c7f 100644
--- a/fs/gfs2/eattr.c
+++ b/fs/gfs2/eattr.c
@@ -301,7 +301,7 @@ static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
 
 	error = gfs2_meta_inode_buffer(ip, &dibh);
 	if (!error) {
-		ip->i_inode.i_ctime.tv_sec = get_seconds();
+		ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 		gfs2_trans_add_bh(ip->i_gl, dibh, 1);
 		gfs2_dinode_out(ip, dibh->b_data);
 		brelse(dibh);
@@ -718,7 +718,7 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er,
 					    (er->er_mode & S_IFMT));
 			ip->i_inode.i_mode = er->er_mode;
 		}
-		ip->i_inode.i_ctime.tv_sec = get_seconds();
+		ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 		gfs2_trans_add_bh(ip->i_gl, dibh, 1);
 		gfs2_dinode_out(ip, dibh->b_data);
 		brelse(dibh);
@@ -853,7 +853,7 @@ static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh,
 			(ip->i_inode.i_mode & S_IFMT) == (er->er_mode & S_IFMT));
 		ip->i_inode.i_mode = er->er_mode;
 	}
-	ip->i_inode.i_ctime.tv_sec = get_seconds();
+	ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
 	gfs2_dinode_out(ip, dibh->b_data);
 	brelse(dibh);
@@ -1134,7 +1134,7 @@ static int ea_remove_stuffed(struct gfs2_inode *ip, struct gfs2_ea_location *el)
 
 	error = gfs2_meta_inode_buffer(ip, &dibh);
 	if (!error) {
-		ip->i_inode.i_ctime.tv_sec = get_seconds();
+		ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 		gfs2_trans_add_bh(ip->i_gl, dibh, 1);
 		gfs2_dinode_out(ip, dibh->b_data);
 		brelse(dibh);
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 4381469..6618c11 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -19,6 +19,8 @@
 #include <linux/gfs2_ondisk.h>
 #include <linux/list.h>
 #include <linux/lm_interface.h>
+#include <linux/wait.h>
+#include <linux/rwsem.h>
 #include <asm/uaccess.h>
 
 #include "gfs2.h"
@@ -33,11 +35,6 @@
 #include "super.h"
 #include "util.h"
 
-struct greedy {
-	struct gfs2_holder gr_gh;
-	struct delayed_work gr_work;
-};
-
 struct gfs2_gl_hash_bucket {
         struct hlist_head hb_list;
 };
@@ -47,6 +44,9 @@ typedef void (*glock_examiner) (struct gfs2_glock * gl);
 static int gfs2_dump_lockstate(struct gfs2_sbd *sdp);
 static int dump_glock(struct gfs2_glock *gl);
 static int dump_inode(struct gfs2_inode *ip);
+static void gfs2_glock_xmote_th(struct gfs2_holder *gh);
+static void gfs2_glock_drop_th(struct gfs2_glock *gl);
+static DECLARE_RWSEM(gfs2_umount_flush_sem);
 
 #define GFS2_GL_HASH_SHIFT      15
 #define GFS2_GL_HASH_SIZE       (1 << GFS2_GL_HASH_SHIFT)
@@ -213,30 +213,6 @@ out:
 }
 
 /**
- * queue_empty - check to see if a glock's queue is empty
- * @gl: the glock
- * @head: the head of the queue to check
- *
- * This function protects the list in the event that a process already
- * has a holder on the list and is adding a second holder for itself.
- * The glmutex lock is what generally prevents processes from working
- * on the same glock at once, but the special case of adding a second
- * holder for yourself ("recursive" locking) doesn't involve locking
- * glmutex, making the spin lock necessary.
- *
- * Returns: 1 if the queue is empty
- */
-
-static inline int queue_empty(struct gfs2_glock *gl, struct list_head *head)
-{
-	int empty;
-	spin_lock(&gl->gl_spin);
-	empty = list_empty(head);
-	spin_unlock(&gl->gl_spin);
-	return empty;
-}
-
-/**
  * search_bucket() - Find struct gfs2_glock by lock number
  * @bucket: the bucket to search
  * @name: The lock name
@@ -395,11 +371,6 @@ void gfs2_holder_init(struct gfs2_glock *gl, unsigned int state, unsigned flags,
 	gh->gh_flags = flags;
 	gh->gh_error = 0;
 	gh->gh_iflags = 0;
-	init_completion(&gh->gh_wait);
-
-	if (gh->gh_state == LM_ST_EXCLUSIVE)
-		gh->gh_flags |= GL_LOCAL_EXCL;
-
 	gfs2_glock_hold(gl);
 }
 
@@ -417,9 +388,6 @@ void gfs2_holder_reinit(unsigned int state, unsigned flags, struct gfs2_holder *
 {
 	gh->gh_state = state;
 	gh->gh_flags = flags;
-	if (gh->gh_state == LM_ST_EXCLUSIVE)
-		gh->gh_flags |= GL_LOCAL_EXCL;
-
 	gh->gh_iflags &= 1 << HIF_ALLOCED;
 	gh->gh_ip = (unsigned long)__builtin_return_address(0);
 }
@@ -479,6 +447,29 @@ static void gfs2_holder_put(struct gfs2_holder *gh)
 	kfree(gh);
 }
 
+static void gfs2_holder_dispose_or_wake(struct gfs2_holder *gh)
+{
+	if (test_bit(HIF_DEALLOC, &gh->gh_iflags)) {
+		gfs2_holder_put(gh);
+		return;
+	}
+	clear_bit(HIF_WAIT, &gh->gh_iflags);
+	smp_mb();
+	wake_up_bit(&gh->gh_iflags, HIF_WAIT);
+}
+
+static int holder_wait(void *word)
+{
+        schedule();
+        return 0;
+}
+
+static void wait_on_holder(struct gfs2_holder *gh)
+{
+	might_sleep();
+	wait_on_bit(&gh->gh_iflags, HIF_WAIT, holder_wait, TASK_UNINTERRUPTIBLE);
+}
+
 /**
  * rq_mutex - process a mutex request in the queue
  * @gh: the glock holder
@@ -493,7 +484,9 @@ static int rq_mutex(struct gfs2_holder *gh)
 	list_del_init(&gh->gh_list);
 	/*  gh->gh_error never examined.  */
 	set_bit(GLF_LOCK, &gl->gl_flags);
-	complete(&gh->gh_wait);
+	clear_bit(HIF_WAIT, &gh->gh_iflags);
+	smp_mb();
+	wake_up_bit(&gh->gh_iflags, HIF_WAIT);
 
 	return 1;
 }
@@ -511,7 +504,6 @@ static int rq_promote(struct gfs2_holder *gh)
 {
 	struct gfs2_glock *gl = gh->gh_gl;
 	struct gfs2_sbd *sdp = gl->gl_sbd;
-	const struct gfs2_glock_operations *glops = gl->gl_ops;
 
 	if (!relaxed_state_ok(gl->gl_state, gh->gh_state, gh->gh_flags)) {
 		if (list_empty(&gl->gl_holders)) {
@@ -526,7 +518,7 @@ static int rq_promote(struct gfs2_holder *gh)
 				gfs2_reclaim_glock(sdp);
 			}
 
-			glops->go_xmote_th(gl, gh->gh_state, gh->gh_flags);
+			gfs2_glock_xmote_th(gh);
 			spin_lock(&gl->gl_spin);
 		}
 		return 1;
@@ -537,11 +529,11 @@ static int rq_promote(struct gfs2_holder *gh)
 		set_bit(GLF_LOCK, &gl->gl_flags);
 	} else {
 		struct gfs2_holder *next_gh;
-		if (gh->gh_flags & GL_LOCAL_EXCL)
+		if (gh->gh_state == LM_ST_EXCLUSIVE)
 			return 1;
 		next_gh = list_entry(gl->gl_holders.next, struct gfs2_holder,
 				     gh_list);
-		if (next_gh->gh_flags & GL_LOCAL_EXCL)
+		if (next_gh->gh_state == LM_ST_EXCLUSIVE)
 			 return 1;
 	}
 
@@ -549,7 +541,7 @@ static int rq_promote(struct gfs2_holder *gh)
 	gh->gh_error = 0;
 	set_bit(HIF_HOLDER, &gh->gh_iflags);
 
-	complete(&gh->gh_wait);
+	gfs2_holder_dispose_or_wake(gh);
 
 	return 0;
 }
@@ -564,7 +556,6 @@ static int rq_promote(struct gfs2_holder *gh)
 static int rq_demote(struct gfs2_holder *gh)
 {
 	struct gfs2_glock *gl = gh->gh_gl;
-	const struct gfs2_glock_operations *glops = gl->gl_ops;
 
 	if (!list_empty(&gl->gl_holders))
 		return 1;
@@ -573,10 +564,7 @@ static int rq_demote(struct gfs2_holder *gh)
 		list_del_init(&gh->gh_list);
 		gh->gh_error = 0;
 		spin_unlock(&gl->gl_spin);
-		if (test_bit(HIF_DEALLOC, &gh->gh_iflags))
-			gfs2_holder_put(gh);
-		else
-			complete(&gh->gh_wait);
+		gfs2_holder_dispose_or_wake(gh);
 		spin_lock(&gl->gl_spin);
 	} else {
 		gl->gl_req_gh = gh;
@@ -585,9 +573,9 @@ static int rq_demote(struct gfs2_holder *gh)
 
 		if (gh->gh_state == LM_ST_UNLOCKED ||
 		    gl->gl_state != LM_ST_EXCLUSIVE)
-			glops->go_drop_th(gl);
+			gfs2_glock_drop_th(gl);
 		else
-			glops->go_xmote_th(gl, gh->gh_state, gh->gh_flags);
+			gfs2_glock_xmote_th(gh);
 
 		spin_lock(&gl->gl_spin);
 	}
@@ -596,30 +584,6 @@ static int rq_demote(struct gfs2_holder *gh)
 }
 
 /**
- * rq_greedy - process a queued request to drop greedy status
- * @gh: the glock holder
- *
- * Returns: 1 if the queue is blocked
- */
-
-static int rq_greedy(struct gfs2_holder *gh)
-{
-	struct gfs2_glock *gl = gh->gh_gl;
-
-	list_del_init(&gh->gh_list);
-	/*  gh->gh_error never examined.  */
-	clear_bit(GLF_GREEDY, &gl->gl_flags);
-	spin_unlock(&gl->gl_spin);
-
-	gfs2_holder_uninit(gh);
-	kfree(container_of(gh, struct greedy, gr_gh));
-
-	spin_lock(&gl->gl_spin);
-
-	return 0;
-}
-
-/**
  * run_queue - process holder structures on a glock
  * @gl: the glock
  *
@@ -649,8 +613,6 @@ static void run_queue(struct gfs2_glock *gl)
 
 			if (test_bit(HIF_DEMOTE, &gh->gh_iflags))
 				blocked = rq_demote(gh);
-			else if (test_bit(HIF_GREEDY, &gh->gh_iflags))
-				blocked = rq_greedy(gh);
 			else
 				gfs2_assert_warn(gl->gl_sbd, 0);
 
@@ -684,6 +646,8 @@ static void gfs2_glmutex_lock(struct gfs2_glock *gl)
 
 	gfs2_holder_init(gl, 0, 0, &gh);
 	set_bit(HIF_MUTEX, &gh.gh_iflags);
+	if (test_and_set_bit(HIF_WAIT, &gh.gh_iflags))
+		BUG();
 
 	spin_lock(&gl->gl_spin);
 	if (test_and_set_bit(GLF_LOCK, &gl->gl_flags)) {
@@ -691,11 +655,13 @@ static void gfs2_glmutex_lock(struct gfs2_glock *gl)
 	} else {
 		gl->gl_owner = current;
 		gl->gl_ip = (unsigned long)__builtin_return_address(0);
-		complete(&gh.gh_wait);
+		clear_bit(HIF_WAIT, &gh.gh_iflags);
+		smp_mb();
+		wake_up_bit(&gh.gh_iflags, HIF_WAIT);
 	}
 	spin_unlock(&gl->gl_spin);
 
-	wait_for_completion(&gh.gh_wait);
+	wait_on_holder(&gh);
 	gfs2_holder_uninit(&gh);
 }
 
@@ -774,6 +740,7 @@ restart:
 			return;
 		set_bit(HIF_DEMOTE, &new_gh->gh_iflags);
 		set_bit(HIF_DEALLOC, &new_gh->gh_iflags);
+		set_bit(HIF_WAIT, &new_gh->gh_iflags);
 
 		goto restart;
 	}
@@ -825,7 +792,7 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
 	int op_done = 1;
 
 	gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
-	gfs2_assert_warn(sdp, queue_empty(gl, &gl->gl_holders));
+	gfs2_assert_warn(sdp, list_empty(&gl->gl_holders));
 	gfs2_assert_warn(sdp, !(ret & LM_OUT_ASYNC));
 
 	state_change(gl, ret & LM_OUT_ST_MASK);
@@ -908,12 +875,8 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
 
 	gfs2_glock_put(gl);
 
-	if (gh) {
-		if (test_bit(HIF_DEALLOC, &gh->gh_iflags))
-			gfs2_holder_put(gh);
-		else
-			complete(&gh->gh_wait);
-	}
+	if (gh)
+		gfs2_holder_dispose_or_wake(gh);
 }
 
 /**
@@ -924,23 +887,26 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
  *
  */
 
-void gfs2_glock_xmote_th(struct gfs2_glock *gl, unsigned int state, int flags)
+void gfs2_glock_xmote_th(struct gfs2_holder *gh)
 {
+	struct gfs2_glock *gl = gh->gh_gl;
 	struct gfs2_sbd *sdp = gl->gl_sbd;
+	int flags = gh->gh_flags;
+	unsigned state = gh->gh_state;
 	const struct gfs2_glock_operations *glops = gl->gl_ops;
 	int lck_flags = flags & (LM_FLAG_TRY | LM_FLAG_TRY_1CB |
 				 LM_FLAG_NOEXP | LM_FLAG_ANY |
 				 LM_FLAG_PRIORITY);
 	unsigned int lck_ret;
 
+	if (glops->go_xmote_th)
+		glops->go_xmote_th(gl);
+
 	gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
-	gfs2_assert_warn(sdp, queue_empty(gl, &gl->gl_holders));
+	gfs2_assert_warn(sdp, list_empty(&gl->gl_holders));
 	gfs2_assert_warn(sdp, state != LM_ST_UNLOCKED);
 	gfs2_assert_warn(sdp, state != gl->gl_state);
 
-	if (gl->gl_state == LM_ST_EXCLUSIVE && glops->go_sync)
-		glops->go_sync(gl);
-
 	gfs2_glock_hold(gl);
 	gl->gl_req_bh = xmote_bh;
 
@@ -971,10 +937,8 @@ static void drop_bh(struct gfs2_glock *gl, unsigned int ret)
 	const struct gfs2_glock_operations *glops = gl->gl_ops;
 	struct gfs2_holder *gh = gl->gl_req_gh;
 
-	clear_bit(GLF_PREFETCH, &gl->gl_flags);
-
 	gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
-	gfs2_assert_warn(sdp, queue_empty(gl, &gl->gl_holders));
+	gfs2_assert_warn(sdp, list_empty(&gl->gl_holders));
 	gfs2_assert_warn(sdp, !ret);
 
 	state_change(gl, LM_ST_UNLOCKED);
@@ -1001,12 +965,8 @@ static void drop_bh(struct gfs2_glock *gl, unsigned int ret)
 
 	gfs2_glock_put(gl);
 
-	if (gh) {
-		if (test_bit(HIF_DEALLOC, &gh->gh_iflags))
-			gfs2_holder_put(gh);
-		else
-			complete(&gh->gh_wait);
-	}
+	if (gh)
+		gfs2_holder_dispose_or_wake(gh);
 }
 
 /**
@@ -1015,19 +975,19 @@ static void drop_bh(struct gfs2_glock *gl, unsigned int ret)
  *
  */
 
-void gfs2_glock_drop_th(struct gfs2_glock *gl)
+static void gfs2_glock_drop_th(struct gfs2_glock *gl)
 {
 	struct gfs2_sbd *sdp = gl->gl_sbd;
 	const struct gfs2_glock_operations *glops = gl->gl_ops;
 	unsigned int ret;
 
+	if (glops->go_drop_th)
+		glops->go_drop_th(gl);
+
 	gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
-	gfs2_assert_warn(sdp, queue_empty(gl, &gl->gl_holders));
+	gfs2_assert_warn(sdp, list_empty(&gl->gl_holders));
 	gfs2_assert_warn(sdp, gl->gl_state != LM_ST_UNLOCKED);
 
-	if (gl->gl_state == LM_ST_EXCLUSIVE && glops->go_sync)
-		glops->go_sync(gl);
-
 	gfs2_glock_hold(gl);
 	gl->gl_req_bh = drop_bh;
 
@@ -1107,8 +1067,7 @@ static int glock_wait_internal(struct gfs2_holder *gh)
 	if (gh->gh_flags & LM_FLAG_PRIORITY)
 		do_cancels(gh);
 
-	wait_for_completion(&gh->gh_wait);
-
+	wait_on_holder(gh);
 	if (gh->gh_error)
 		return gh->gh_error;
 
@@ -1164,6 +1123,8 @@ static void add_to_queue(struct gfs2_holder *gh)
 	struct gfs2_holder *existing;
 
 	BUG_ON(!gh->gh_owner);
+	if (test_and_set_bit(HIF_WAIT, &gh->gh_iflags))
+		BUG();
 
 	existing = find_holder_by_owner(&gl->gl_holders, gh->gh_owner);
 	if (existing) {
@@ -1227,8 +1188,6 @@ restart:
 		}
 	}
 
-	clear_bit(GLF_PREFETCH, &gl->gl_flags);
-
 	return error;
 }
 
@@ -1321,98 +1280,6 @@ void gfs2_glock_dq(struct gfs2_holder *gh)
 }
 
 /**
- * gfs2_glock_prefetch - Try to prefetch a glock
- * @gl: the glock
- * @state: the state to prefetch in
- * @flags: flags passed to go_xmote_th()
- *
- */
-
-static void gfs2_glock_prefetch(struct gfs2_glock *gl, unsigned int state,
-				int flags)
-{
-	const struct gfs2_glock_operations *glops = gl->gl_ops;
-
-	spin_lock(&gl->gl_spin);
-
-	if (test_bit(GLF_LOCK, &gl->gl_flags) || !list_empty(&gl->gl_holders) ||
-	    !list_empty(&gl->gl_waiters1) || !list_empty(&gl->gl_waiters2) ||
-	    !list_empty(&gl->gl_waiters3) ||
-	    relaxed_state_ok(gl->gl_state, state, flags)) {
-		spin_unlock(&gl->gl_spin);
-		return;
-	}
-
-	set_bit(GLF_PREFETCH, &gl->gl_flags);
-	set_bit(GLF_LOCK, &gl->gl_flags);
-	spin_unlock(&gl->gl_spin);
-
-	glops->go_xmote_th(gl, state, flags);
-}
-
-static void greedy_work(struct work_struct *work)
-{
-	struct greedy *gr = container_of(work, struct greedy, gr_work.work);
-	struct gfs2_holder *gh = &gr->gr_gh;
-	struct gfs2_glock *gl = gh->gh_gl;
-	const struct gfs2_glock_operations *glops = gl->gl_ops;
-
-	clear_bit(GLF_SKIP_WAITERS2, &gl->gl_flags);
-
-	if (glops->go_greedy)
-		glops->go_greedy(gl);
-
-	spin_lock(&gl->gl_spin);
-
-	if (list_empty(&gl->gl_waiters2)) {
-		clear_bit(GLF_GREEDY, &gl->gl_flags);
-		spin_unlock(&gl->gl_spin);
-		gfs2_holder_uninit(gh);
-		kfree(gr);
-	} else {
-		gfs2_glock_hold(gl);
-		list_add_tail(&gh->gh_list, &gl->gl_waiters2);
-		run_queue(gl);
-		spin_unlock(&gl->gl_spin);
-		gfs2_glock_put(gl);
-	}
-}
-
-/**
- * gfs2_glock_be_greedy -
- * @gl:
- * @time:
- *
- * Returns: 0 if go_greedy will be called, 1 otherwise
- */
-
-int gfs2_glock_be_greedy(struct gfs2_glock *gl, unsigned int time)
-{
-	struct greedy *gr;
-	struct gfs2_holder *gh;
-
-	if (!time || gl->gl_sbd->sd_args.ar_localcaching ||
-	    test_and_set_bit(GLF_GREEDY, &gl->gl_flags))
-		return 1;
-
-	gr = kmalloc(sizeof(struct greedy), GFP_KERNEL);
-	if (!gr) {
-		clear_bit(GLF_GREEDY, &gl->gl_flags);
-		return 1;
-	}
-	gh = &gr->gr_gh;
-
-	gfs2_holder_init(gl, 0, 0, gh);
-	set_bit(HIF_GREEDY, &gh->gh_iflags);
-	INIT_DELAYED_WORK(&gr->gr_work, greedy_work);
-
-	set_bit(GLF_SKIP_WAITERS2, &gl->gl_flags);
-	schedule_delayed_work(&gr->gr_work, time);
-
-	return 0;
-}
-
-/**
  * gfs2_glock_dq_uninit - dequeue a holder from a glock and initialize it
  * @gh: the holder structure
  *
@@ -1470,10 +1337,7 @@ static int glock_compare(const void *arg_a, const void *arg_b)
 		return 1;
 	if (a->ln_number < b->ln_number)
 		return -1;
-	if (gh_a->gh_state == LM_ST_SHARED && gh_b->gh_state == LM_ST_EXCLUSIVE)
-		return 1;
-	if (!(gh_a->gh_flags & GL_LOCAL_EXCL) && (gh_b->gh_flags & GL_LOCAL_EXCL))
-		return 1;
+	BUG_ON(gh_a->gh_gl->gl_ops->go_type == gh_b->gh_gl->gl_ops->go_type);
 	return 0;
 }
 
@@ -1618,34 +1482,6 @@ void gfs2_glock_dq_uninit_m(unsigned int num_gh, struct gfs2_holder *ghs)
 }
 
 /**
- * gfs2_glock_prefetch_num - prefetch a glock based on lock number
- * @sdp: the filesystem
- * @number: the lock number
- * @glops: the glock operations for the type of glock
- * @state: the state to acquire the glock in
- * @flags: modifier flags for the aquisition
- *
- * Returns: errno
- */
-
-void gfs2_glock_prefetch_num(struct gfs2_sbd *sdp, u64 number,
-			     const struct gfs2_glock_operations *glops,
-			     unsigned int state, int flags)
-{
-	struct gfs2_glock *gl;
-	int error;
-
-	if (atomic_read(&sdp->sd_reclaim_count) <
-	    gfs2_tune_get(sdp, gt_reclaim_limit)) {
-		error = gfs2_glock_get(sdp, number, glops, CREATE, &gl);
-		if (!error) {
-			gfs2_glock_prefetch(gl, state, flags);
-			gfs2_glock_put(gl);
-		}
-	}
-}
-
-/**
  * gfs2_lvb_hold - attach a LVB from a glock
  * @gl: The glock in question
  *
@@ -1703,8 +1539,6 @@ static void blocking_cb(struct gfs2_sbd *sdp, struct lm_lockname *name,
 	if (!gl)
 		return;
 
-	if (gl->gl_ops->go_callback)
-		gl->gl_ops->go_callback(gl, state);
 	handle_callback(gl, state);
 
 	spin_lock(&gl->gl_spin);
@@ -1746,12 +1580,14 @@ void gfs2_glock_cb(void *cb_data, unsigned int type, void *data)
 		struct lm_async_cb *async = data;
 		struct gfs2_glock *gl;
 
+		down_read(&gfs2_umount_flush_sem);
 		gl = gfs2_glock_find(sdp, &async->lc_name);
 		if (gfs2_assert_warn(sdp, gl))
 			return;
 		if (!gfs2_assert_warn(sdp, gl->gl_req_bh))
 			gl->gl_req_bh(gl, async->lc_ret);
 		gfs2_glock_put(gl);
+		up_read(&gfs2_umount_flush_sem);
 		return;
 	}
 
@@ -1781,15 +1617,11 @@ void gfs2_glock_cb(void *cb_data, unsigned int type, void *data)
 
 static int demote_ok(struct gfs2_glock *gl)
 {
-	struct gfs2_sbd *sdp = gl->gl_sbd;
 	const struct gfs2_glock_operations *glops = gl->gl_ops;
 	int demote = 1;
 
 	if (test_bit(GLF_STICKY, &gl->gl_flags))
 		demote = 0;
-	else if (test_bit(GLF_PREFETCH, &gl->gl_flags))
-		demote = time_after_eq(jiffies, gl->gl_stamp +
-				    gfs2_tune_get(sdp, gt_prefetch_secs) * HZ);
 	else if (glops->go_demote_ok)
 		demote = glops->go_demote_ok(gl);
 
@@ -1845,7 +1677,7 @@ void gfs2_reclaim_glock(struct gfs2_sbd *sdp)
 	atomic_inc(&sdp->sd_reclaimed);
 
 	if (gfs2_glmutex_trylock(gl)) {
-		if (queue_empty(gl, &gl->gl_holders) &&
+		if (list_empty(&gl->gl_holders) &&
 		    gl->gl_state != LM_ST_UNLOCKED && demote_ok(gl))
 			handle_callback(gl, LM_ST_UNLOCKED);
 		gfs2_glmutex_unlock(gl);
@@ -1909,7 +1741,7 @@ static void scan_glock(struct gfs2_glock *gl)
 		return;
 
 	if (gfs2_glmutex_trylock(gl)) {
-		if (queue_empty(gl, &gl->gl_holders) &&
+		if (list_empty(&gl->gl_holders) &&
 		    gl->gl_state != LM_ST_UNLOCKED && demote_ok(gl))
 			goto out_schedule;
 		gfs2_glmutex_unlock(gl);
@@ -1958,7 +1790,7 @@ static void clear_glock(struct gfs2_glock *gl)
 	}
 
 	if (gfs2_glmutex_trylock(gl)) {
-		if (queue_empty(gl, &gl->gl_holders) &&
+		if (list_empty(&gl->gl_holders) &&
 		    gl->gl_state != LM_ST_UNLOCKED)
 			handle_callback(gl, LM_ST_UNLOCKED);
 		gfs2_glmutex_unlock(gl);
@@ -2000,7 +1832,9 @@ void gfs2_gl_hash_clear(struct gfs2_sbd *sdp, int wait)
 			t = jiffies;
 		}
 
+		down_write(&gfs2_umount_flush_sem);
 		invalidate_inodes(sdp->sd_vfs);
+		up_write(&gfs2_umount_flush_sem);
 		msleep(10);
 	}
 }
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index fb39108..f50e40c 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -20,7 +20,6 @@
 #define LM_FLAG_ANY		0x00000008
 #define LM_FLAG_PRIORITY	0x00000010 */
 
-#define GL_LOCAL_EXCL		0x00000020
 #define GL_ASYNC		0x00000040
 #define GL_EXACT		0x00000080
 #define GL_SKIP			0x00000100
@@ -83,17 +82,11 @@ void gfs2_holder_init(struct gfs2_glock *gl, unsigned int state, unsigned flags,
 void gfs2_holder_reinit(unsigned int state, unsigned flags,
 			struct gfs2_holder *gh);
 void gfs2_holder_uninit(struct gfs2_holder *gh);
-
-void gfs2_glock_xmote_th(struct gfs2_glock *gl, unsigned int state, int flags);
-void gfs2_glock_drop_th(struct gfs2_glock *gl);
-
 int gfs2_glock_nq(struct gfs2_holder *gh);
 int gfs2_glock_poll(struct gfs2_holder *gh);
 int gfs2_glock_wait(struct gfs2_holder *gh);
 void gfs2_glock_dq(struct gfs2_holder *gh);
 
-int gfs2_glock_be_greedy(struct gfs2_glock *gl, unsigned int time);
-
 void gfs2_glock_dq_uninit(struct gfs2_holder *gh);
 int gfs2_glock_nq_num(struct gfs2_sbd *sdp,
 		      u64 number, const struct gfs2_glock_operations *glops,
@@ -103,10 +96,6 @@ int gfs2_glock_nq_m(unsigned int num_gh, struct gfs2_holder *ghs);
 void gfs2_glock_dq_m(unsigned int num_gh, struct gfs2_holder *ghs);
 void gfs2_glock_dq_uninit_m(unsigned int num_gh, struct gfs2_holder *ghs);
 
-void gfs2_glock_prefetch_num(struct gfs2_sbd *sdp, u64 number,
-			     const struct gfs2_glock_operations *glops,
-			     unsigned int state, int flags);
-
 /**
  * gfs2_glock_nq_init - intialize a holder and enqueue it on a glock
  * @gl: the glock
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index b068d10..c4b0391 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -117,12 +117,14 @@ static void gfs2_pte_inval(struct gfs2_glock *gl)
 
 static void meta_go_sync(struct gfs2_glock *gl)
 {
+	if (gl->gl_state != LM_ST_EXCLUSIVE)
+		return;
+
 	if (test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) {
 		gfs2_log_flush(gl->gl_sbd, gl);
 		gfs2_meta_sync(gl);
 		gfs2_ail_empty_gl(gl);
 	}
-
 }
 
 /**
@@ -142,6 +144,37 @@ static void meta_go_inval(struct gfs2_glock *gl, int flags)
 }
 
 /**
+ * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
+ * @gl: the glock protecting the inode
+ *
+ */
+
+static void inode_go_sync(struct gfs2_glock *gl)
+{
+	struct gfs2_inode *ip = gl->gl_object;
+
+	if (ip && !S_ISREG(ip->i_inode.i_mode))
+		ip = NULL;
+
+	if (test_bit(GLF_DIRTY, &gl->gl_flags)) {
+		gfs2_log_flush(gl->gl_sbd, gl);
+		if (ip)
+			filemap_fdatawrite(ip->i_inode.i_mapping);
+		gfs2_meta_sync(gl);
+		if (ip) {
+			struct address_space *mapping = ip->i_inode.i_mapping;
+			int error = filemap_fdatawait(mapping);
+			if (error == -ENOSPC)
+				set_bit(AS_ENOSPC, &mapping->flags);
+			else if (error)
+				set_bit(AS_EIO, &mapping->flags);
+		}
+		clear_bit(GLF_DIRTY, &gl->gl_flags);
+		gfs2_ail_empty_gl(gl);
+	}
+}
+
+/**
  * inode_go_xmote_th - promote/demote a glock
  * @gl: the glock
  * @state: the requested state
@@ -149,12 +182,12 @@ static void meta_go_inval(struct gfs2_glock *gl, int flags)
  *
  */
 
-static void inode_go_xmote_th(struct gfs2_glock *gl, unsigned int state,
-			      int flags)
+static void inode_go_xmote_th(struct gfs2_glock *gl)
 {
 	if (gl->gl_state != LM_ST_UNLOCKED)
 		gfs2_pte_inval(gl);
-	gfs2_glock_xmote_th(gl, state, flags);
+	if (gl->gl_state == LM_ST_EXCLUSIVE)
+		inode_go_sync(gl);
 }
 
 /**
@@ -189,38 +222,8 @@ static void inode_go_xmote_bh(struct gfs2_glock *gl)
 static void inode_go_drop_th(struct gfs2_glock *gl)
 {
 	gfs2_pte_inval(gl);
-	gfs2_glock_drop_th(gl);
-}
-
-/**
- * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
- * @gl: the glock protecting the inode
- *
- */
-
-static void inode_go_sync(struct gfs2_glock *gl)
-{
-	struct gfs2_inode *ip = gl->gl_object;
-
-	if (ip && !S_ISREG(ip->i_inode.i_mode))
-		ip = NULL;
-
-	if (test_bit(GLF_DIRTY, &gl->gl_flags)) {
-		gfs2_log_flush(gl->gl_sbd, gl);
-		if (ip)
-			filemap_fdatawrite(ip->i_inode.i_mapping);
-		gfs2_meta_sync(gl);
-		if (ip) {
-			struct address_space *mapping = ip->i_inode.i_mapping;
-			int error = filemap_fdatawait(mapping);
-			if (error == -ENOSPC)
-				set_bit(AS_ENOSPC, &mapping->flags);
-			else if (error)
-				set_bit(AS_EIO, &mapping->flags);
-		}
-		clear_bit(GLF_DIRTY, &gl->gl_flags);
-		gfs2_ail_empty_gl(gl);
-	}
+	if (gl->gl_state == LM_ST_EXCLUSIVE)
+		inode_go_sync(gl);
 }
 
 /**
@@ -295,7 +298,7 @@ static int inode_go_lock(struct gfs2_holder *gh)
 
 	if ((ip->i_di.di_flags & GFS2_DIF_TRUNC_IN_PROG) &&
 	    (gl->gl_state == LM_ST_EXCLUSIVE) &&
-	    (gh->gh_flags & GL_LOCAL_EXCL))
+	    (gh->gh_state == LM_ST_EXCLUSIVE))
 		error = gfs2_truncatei_resume(ip);
 
 	return error;
@@ -319,39 +322,6 @@ static void inode_go_unlock(struct gfs2_holder *gh)
 }
 
 /**
- * inode_greedy -
- * @gl: the glock
- *
- */
-
-static void inode_greedy(struct gfs2_glock *gl)
-{
-	struct gfs2_sbd *sdp = gl->gl_sbd;
-	struct gfs2_inode *ip = gl->gl_object;
-	unsigned int quantum = gfs2_tune_get(sdp, gt_greedy_quantum);
-	unsigned int max = gfs2_tune_get(sdp, gt_greedy_max);
-	unsigned int new_time;
-
-	spin_lock(&ip->i_spin);
-
-	if (time_after(ip->i_last_pfault + quantum, jiffies)) {
-		new_time = ip->i_greedy + quantum;
-		if (new_time > max)
-			new_time = max;
-	} else {
-		new_time = ip->i_greedy - quantum;
-		if (!new_time || new_time > max)
-			new_time = 1;
-	}
-
-	ip->i_greedy = new_time;
-
-	spin_unlock(&ip->i_spin);
-
-	iput(&ip->i_inode);
-}
-
-/**
  * rgrp_go_demote_ok - Check to see if it's ok to unlock a RG's glock
  * @gl: the glock
  *
@@ -398,8 +368,7 @@ static void rgrp_go_unlock(struct gfs2_holder *gh)
  *
  */
 
-static void trans_go_xmote_th(struct gfs2_glock *gl, unsigned int state,
-			      int flags)
+static void trans_go_xmote_th(struct gfs2_glock *gl)
 {
 	struct gfs2_sbd *sdp = gl->gl_sbd;
 
@@ -408,8 +377,6 @@ static void trans_go_xmote_th(struct gfs2_glock *gl, unsigned int state,
 		gfs2_meta_syncfs(sdp);
 		gfs2_log_shutdown(sdp);
 	}
-
-	gfs2_glock_xmote_th(gl, state, flags);
 }
 
 /**
@@ -461,8 +428,6 @@ static void trans_go_drop_th(struct gfs2_glock *gl)
 		gfs2_meta_syncfs(sdp);
 		gfs2_log_shutdown(sdp);
 	}
-
-	gfs2_glock_drop_th(gl);
 }
 
 /**
@@ -478,8 +443,8 @@ static int quota_go_demote_ok(struct gfs2_glock *gl)
 }
 
 const struct gfs2_glock_operations gfs2_meta_glops = {
-	.go_xmote_th = gfs2_glock_xmote_th,
-	.go_drop_th = gfs2_glock_drop_th,
+	.go_xmote_th = meta_go_sync,
+	.go_drop_th = meta_go_sync,
 	.go_type = LM_TYPE_META,
 };
 
@@ -487,19 +452,14 @@ const struct gfs2_glock_operations gfs2_inode_glops = {
 	.go_xmote_th = inode_go_xmote_th,
 	.go_xmote_bh = inode_go_xmote_bh,
 	.go_drop_th = inode_go_drop_th,
-	.go_sync = inode_go_sync,
 	.go_inval = inode_go_inval,
 	.go_demote_ok = inode_go_demote_ok,
 	.go_lock = inode_go_lock,
 	.go_unlock = inode_go_unlock,
-	.go_greedy = inode_greedy,
 	.go_type = LM_TYPE_INODE,
 };
 
 const struct gfs2_glock_operations gfs2_rgrp_glops = {
-	.go_xmote_th = gfs2_glock_xmote_th,
-	.go_drop_th = gfs2_glock_drop_th,
-	.go_sync = meta_go_sync,
 	.go_inval = meta_go_inval,
 	.go_demote_ok = rgrp_go_demote_ok,
 	.go_lock = rgrp_go_lock,
@@ -515,33 +475,23 @@ const struct gfs2_glock_operations gfs2_trans_glops = {
 };
 
 const struct gfs2_glock_operations gfs2_iopen_glops = {
-	.go_xmote_th = gfs2_glock_xmote_th,
-	.go_drop_th = gfs2_glock_drop_th,
 	.go_type = LM_TYPE_IOPEN,
 };
 
 const struct gfs2_glock_operations gfs2_flock_glops = {
-	.go_xmote_th = gfs2_glock_xmote_th,
-	.go_drop_th = gfs2_glock_drop_th,
 	.go_type = LM_TYPE_FLOCK,
 };
 
 const struct gfs2_glock_operations gfs2_nondisk_glops = {
-	.go_xmote_th = gfs2_glock_xmote_th,
-	.go_drop_th = gfs2_glock_drop_th,
 	.go_type = LM_TYPE_NONDISK,
 };
 
 const struct gfs2_glock_operations gfs2_quota_glops = {
-	.go_xmote_th = gfs2_glock_xmote_th,
-	.go_drop_th = gfs2_glock_drop_th,
 	.go_demote_ok = quota_go_demote_ok,
 	.go_type = LM_TYPE_QUOTA,
 };
 
 const struct gfs2_glock_operations gfs2_journal_glops = {
-	.go_xmote_th = gfs2_glock_xmote_th,
-	.go_drop_th = gfs2_glock_drop_th,
 	.go_type = LM_TYPE_JOURNAL,
 };
 
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 734421e..12c80fd 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -101,17 +101,14 @@ struct gfs2_bufdata {
 };
 
 struct gfs2_glock_operations {
-	void (*go_xmote_th) (struct gfs2_glock *gl, unsigned int state, int flags);
+	void (*go_xmote_th) (struct gfs2_glock *gl);
 	void (*go_xmote_bh) (struct gfs2_glock *gl);
 	void (*go_drop_th) (struct gfs2_glock *gl);
 	void (*go_drop_bh) (struct gfs2_glock *gl);
-	void (*go_sync) (struct gfs2_glock *gl);
 	void (*go_inval) (struct gfs2_glock *gl, int flags);
 	int (*go_demote_ok) (struct gfs2_glock *gl);
 	int (*go_lock) (struct gfs2_holder *gh);
 	void (*go_unlock) (struct gfs2_holder *gh);
-	void (*go_callback) (struct gfs2_glock *gl, unsigned int state);
-	void (*go_greedy) (struct gfs2_glock *gl);
 	const int go_type;
 };
 
@@ -120,7 +117,6 @@ enum {
 	HIF_MUTEX		= 0,
 	HIF_PROMOTE		= 1,
 	HIF_DEMOTE		= 2,
-	HIF_GREEDY		= 3,
 
 	/* States */
 	HIF_ALLOCED		= 4,
@@ -128,6 +124,7 @@ enum {
 	HIF_HOLDER		= 6,
 	HIF_FIRST		= 7,
 	HIF_ABORTED		= 9,
+	HIF_WAIT		= 10,
 };
 
 struct gfs2_holder {
@@ -140,17 +137,14 @@ struct gfs2_holder {
 
 	int gh_error;
 	unsigned long gh_iflags;
-	struct completion gh_wait;
 	unsigned long gh_ip;
 };
 
 enum {
 	GLF_LOCK		= 1,
 	GLF_STICKY		= 2,
-	GLF_PREFETCH		= 3,
 	GLF_DIRTY		= 5,
 	GLF_SKIP_WAITERS2	= 6,
-	GLF_GREEDY		= 7,
 };
 
 struct gfs2_glock {
@@ -167,7 +161,7 @@ struct gfs2_glock {
 	unsigned long gl_ip;
 	struct list_head gl_holders;
 	struct list_head gl_waiters1;	/* HIF_MUTEX */
-	struct list_head gl_waiters2;	/* HIF_DEMOTE, HIF_GREEDY */
+	struct list_head gl_waiters2;	/* HIF_DEMOTE */
 	struct list_head gl_waiters3;	/* HIF_PROMOTE */
 
 	const struct gfs2_glock_operations *gl_ops;
@@ -236,7 +230,6 @@ struct gfs2_inode {
 
 	spinlock_t i_spin;
 	struct rw_semaphore i_rw_mutex;
-	unsigned int i_greedy;
 	unsigned long i_last_pfault;
 
 	struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
@@ -418,17 +411,12 @@ struct gfs2_tune {
 	unsigned int gt_atime_quantum; /* Min secs between atime updates */
 	unsigned int gt_new_files_jdata;
 	unsigned int gt_new_files_directio;
-	unsigned int gt_max_atomic_write; /* Split big writes into this size */
 	unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
 	unsigned int gt_lockdump_size;
 	unsigned int gt_stall_secs; /* Detects trouble! */
 	unsigned int gt_complain_secs;
 	unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
 	unsigned int gt_entries_per_readdir;
-	unsigned int gt_prefetch_secs; /* Usage window for prefetched glocks */
-	unsigned int gt_greedy_default;
-	unsigned int gt_greedy_quantum;
-	unsigned int gt_greedy_max;
 	unsigned int gt_statfs_quantum;
 	unsigned int gt_statfs_slow;
 };
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index d122074c..0d6831a 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -287,10 +287,8 @@ out:
  *
  * Returns: errno
  */
-
 int gfs2_change_nlink(struct gfs2_inode *ip, int diff)
 {
-	struct gfs2_sbd *sdp = ip->i_inode.i_sb->s_fs_info;
 	struct buffer_head *dibh;
 	u32 nlink;
 	int error;
@@ -315,42 +313,34 @@ int gfs2_change_nlink(struct gfs2_inode *ip, int diff)
 	else
 		drop_nlink(&ip->i_inode);
 
-	ip->i_inode.i_ctime.tv_sec = get_seconds();
+	ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 
 	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
 	gfs2_dinode_out(ip, dibh->b_data);
 	brelse(dibh);
 	mark_inode_dirty(&ip->i_inode);
 
-	if (ip->i_inode.i_nlink == 0) {
-		struct gfs2_rgrpd *rgd;
-		struct gfs2_holder ri_gh, rg_gh;
-
-		error = gfs2_rindex_hold(sdp, &ri_gh);
-		if (error)
-			goto out;
-		error = -EIO;
-		rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
-		if (!rgd)
-			goto out_norgrp;
-		error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &rg_gh);
-		if (error)
-			goto out_norgrp;
-
+	if (ip->i_inode.i_nlink == 0)
 		gfs2_unlink_di(&ip->i_inode); /* mark inode unlinked */
-		gfs2_glock_dq_uninit(&rg_gh);
-out_norgrp:
-		gfs2_glock_dq_uninit(&ri_gh);
-	}
-out:
+
 	return error;
 }
 
 struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
 {
 	struct qstr qstr;
+	struct inode *inode;
 	gfs2_str2qstr(&qstr, name);
-	return gfs2_lookupi(dip, &qstr, 1, NULL);
+	inode = gfs2_lookupi(dip, &qstr, 1, NULL);
+	/* gfs2_lookupi has inconsistent callers: vfs
+	 * related routines expect NULL for no entry found,
+	 * gfs2_lookup_simple callers expect ENOENT
+	 * and do not check for NULL.
+	 */
+	if (inode == NULL)
+		return ERR_PTR(-ENOENT);
+	else
+		return inode;
 }
 
 
@@ -361,8 +351,10 @@ struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
  * @is_root: If 1, ignore the caller's permissions
  * @i_gh: An uninitialized holder for the new inode glock
  *
- * There will always be a vnode (Linux VFS inode) for the d_gh inode unless
- * @is_root is true.
+ * This can be called via the VFS filldir function when NFS is doing
+ * a readdirplus and the inode which its intending to stat isn't
+ * already in cache. In this case we must not take the directory glock
+ * again, since the readdir call will have already taken that lock.
  *
  * Returns: errno
  */
@@ -375,8 +367,9 @@ struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
 	struct gfs2_holder d_gh;
 	struct gfs2_inum_host inum;
 	unsigned int type;
-	int error = 0;
+	int error;
 	struct inode *inode = NULL;
+	int unlock = 0;
 
 	if (!name->len || name->len > GFS2_FNAMESIZE)
 		return ERR_PTR(-ENAMETOOLONG);
@@ -388,9 +381,12 @@ struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
 		return dir;
 	}
 
-	error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
-	if (error)
-		return ERR_PTR(error);
+	if (gfs2_glock_is_locked_by_me(dip->i_gl) == 0) {
+		error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
+		if (error)
+			return ERR_PTR(error);
+		unlock = 1;
+	}
 
 	if (!is_root) {
 		error = permission(dir, MAY_EXEC, NULL);
@@ -405,10 +401,11 @@ struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
 	inode = gfs2_inode_lookup(sb, &inum, type);
 
 out:
-	gfs2_glock_dq_uninit(&d_gh);
+	if (unlock)
+		gfs2_glock_dq_uninit(&d_gh);
 	if (error == -ENOENT)
 		return NULL;
-	return inode;
+	return inode ? inode : ERR_PTR(error);
 }
 
 static int pick_formal_ino_1(struct gfs2_sbd *sdp, u64 *formal_ino)
diff --git a/fs/gfs2/lm.c b/fs/gfs2/lm.c
index effe4a3..e30673d 100644
--- a/fs/gfs2/lm.c
+++ b/fs/gfs2/lm.c
@@ -104,15 +104,9 @@ int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...)
 	vprintk(fmt, args);
 	va_end(args);
 
-	fs_err(sdp, "about to withdraw from the cluster\n");
+	fs_err(sdp, "about to withdraw this file system\n");
 	BUG_ON(sdp->sd_args.ar_debug);
 
-
-	fs_err(sdp, "waiting for outstanding I/O\n");
-
-	/* FIXME: suspend dm device so oustanding bio's complete
-	   and all further io requests fail */
-
 	fs_err(sdp, "telling LM to withdraw\n");
 	gfs2_withdraw_lockproto(&sdp->sd_lockstruct);
 	fs_err(sdp, "withdrawn\n");
diff --git a/fs/gfs2/locking/dlm/lock_dlm.h b/fs/gfs2/locking/dlm/lock_dlm.h
index 33af707..a87c7bf 100644
--- a/fs/gfs2/locking/dlm/lock_dlm.h
+++ b/fs/gfs2/locking/dlm/lock_dlm.h
@@ -36,7 +36,7 @@
 
 #define GDLM_STRNAME_BYTES	24
 #define GDLM_LVB_SIZE		32
-#define GDLM_DROP_COUNT		50000
+#define GDLM_DROP_COUNT		200000
 #define GDLM_DROP_PERIOD	60
 #define GDLM_NAME_LEN		128
 
diff --git a/fs/gfs2/locking/dlm/main.c b/fs/gfs2/locking/dlm/main.c
index 2194b1d..a0e7eda 100644
--- a/fs/gfs2/locking/dlm/main.c
+++ b/fs/gfs2/locking/dlm/main.c
@@ -11,9 +11,6 @@
 
 #include "lock_dlm.h"
 
-extern int gdlm_drop_count;
-extern int gdlm_drop_period;
-
 extern struct lm_lockops gdlm_ops;
 
 static int __init init_lock_dlm(void)
@@ -40,9 +37,6 @@ static int __init init_lock_dlm(void)
 		return error;
 	}
 
-	gdlm_drop_count = GDLM_DROP_COUNT;
-	gdlm_drop_period = GDLM_DROP_PERIOD;
-
 	printk(KERN_INFO
 	       "Lock_DLM (built %s %s) installed\n", __DATE__, __TIME__);
 	return 0;
diff --git a/fs/gfs2/locking/dlm/mount.c b/fs/gfs2/locking/dlm/mount.c
index cdd1694..1d8faa3 100644
--- a/fs/gfs2/locking/dlm/mount.c
+++ b/fs/gfs2/locking/dlm/mount.c
@@ -9,8 +9,6 @@
 
 #include "lock_dlm.h"
 
-int gdlm_drop_count;
-int gdlm_drop_period;
 const struct lm_lockops gdlm_ops;
 
 
@@ -24,8 +22,8 @@ static struct gdlm_ls *init_gdlm(lm_callback_t cb, struct gfs2_sbd *sdp,
 	if (!ls)
 		return NULL;
 
-	ls->drop_locks_count = gdlm_drop_count;
-	ls->drop_locks_period = gdlm_drop_period;
+	ls->drop_locks_count = GDLM_DROP_COUNT;
+	ls->drop_locks_period = GDLM_DROP_PERIOD;
 	ls->fscb = cb;
 	ls->sdp = sdp;
 	ls->fsflags = flags;
diff --git a/fs/gfs2/locking/dlm/plock.c b/fs/gfs2/locking/dlm/plock.c
index 3799f19..1dd4215 100644
--- a/fs/gfs2/locking/dlm/plock.c
+++ b/fs/gfs2/locking/dlm/plock.c
@@ -264,7 +264,7 @@ static unsigned int dev_poll(struct file *file, poll_table *wait)
 	return 0;
 }
 
-static struct file_operations dev_fops = {
+static const struct file_operations dev_fops = {
 	.read    = dev_read,
 	.write   = dev_write,
 	.poll    = dev_poll,
diff --git a/fs/gfs2/locking/dlm/sysfs.c b/fs/gfs2/locking/dlm/sysfs.c
index 29ae06f..4746b88 100644
--- a/fs/gfs2/locking/dlm/sysfs.c
+++ b/fs/gfs2/locking/dlm/sysfs.c
@@ -116,6 +116,17 @@ static ssize_t recover_status_show(struct gdlm_ls *ls, char *buf)
 	return sprintf(buf, "%d\n", ls->recover_jid_status);
 }
 
+static ssize_t drop_count_show(struct gdlm_ls *ls, char *buf)
+{
+	return sprintf(buf, "%d\n", ls->drop_locks_count);
+}
+
+static ssize_t drop_count_store(struct gdlm_ls *ls, const char *buf, size_t len)
+{
+	ls->drop_locks_count = simple_strtol(buf, NULL, 0);
+	return len;
+}
+
 struct gdlm_attr {
 	struct attribute attr;
 	ssize_t (*show)(struct gdlm_ls *, char *);
@@ -135,6 +146,7 @@ GDLM_ATTR(first_done,     0444, first_done_show,     NULL);
 GDLM_ATTR(recover,        0644, recover_show,        recover_store);
 GDLM_ATTR(recover_done,   0444, recover_done_show,   NULL);
 GDLM_ATTR(recover_status, 0444, recover_status_show, NULL);
+GDLM_ATTR(drop_count,     0644, drop_count_show,     drop_count_store);
 
 static struct attribute *gdlm_attrs[] = {
 	&gdlm_attr_proto_name.attr,
@@ -147,6 +159,7 @@ static struct attribute *gdlm_attrs[] = {
 	&gdlm_attr_recover.attr,
 	&gdlm_attr_recover_done.attr,
 	&gdlm_attr_recover_status.attr,
+	&gdlm_attr_drop_count.attr,
 	NULL,
 };
 
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index 4d7f94d..16bb4b4 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -69,13 +69,16 @@ static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
 	struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
 	struct gfs2_trans *tr;
 
-	if (!list_empty(&bd->bd_list_tr))
+	gfs2_log_lock(sdp);
+	if (!list_empty(&bd->bd_list_tr)) {
+		gfs2_log_unlock(sdp);
 		return;
-
+	}
 	tr = current->journal_info;
 	tr->tr_touched = 1;
 	tr->tr_num_buf++;
 	list_add(&bd->bd_list_tr, &tr->tr_list_buf);
+	gfs2_log_unlock(sdp);
 
 	if (!list_empty(&le->le_list))
 		return;
@@ -84,7 +87,6 @@ static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
 
 	gfs2_meta_check(sdp, bd->bd_bh);
 	gfs2_pin(sdp, bd->bd_bh);
-
 	gfs2_log_lock(sdp);
 	sdp->sd_log_num_buf++;
 	list_add(&le->le_list, &sdp->sd_log_le_buf);
@@ -98,11 +100,13 @@ static void buf_lo_incore_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
 	struct list_head *head = &tr->tr_list_buf;
 	struct gfs2_bufdata *bd;
 
+	gfs2_log_lock(sdp);
 	while (!list_empty(head)) {
 		bd = list_entry(head->next, struct gfs2_bufdata, bd_list_tr);
 		list_del_init(&bd->bd_list_tr);
 		tr->tr_num_buf--;
 	}
+	gfs2_log_unlock(sdp);
 	gfs2_assert_warn(sdp, !tr->tr_num_buf);
 }
 
@@ -462,13 +466,17 @@ static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
 	struct address_space *mapping = bd->bd_bh->b_page->mapping;
 	struct gfs2_inode *ip = GFS2_I(mapping->host);
 
+	gfs2_log_lock(sdp);
 	tr->tr_touched = 1;
 	if (list_empty(&bd->bd_list_tr) &&
 	    (ip->i_di.di_flags & GFS2_DIF_JDATA)) {
 		tr->tr_num_buf++;
 		list_add(&bd->bd_list_tr, &tr->tr_list_buf);
+		gfs2_log_unlock(sdp);
 		gfs2_pin(sdp, bd->bd_bh);
 		tr->tr_num_buf_new++;
+	} else {
+		gfs2_log_unlock(sdp);
 	}
 	gfs2_trans_add_gl(bd->bd_gl);
 	gfs2_log_lock(sdp);
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index 0e34d99..e62d4f6 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -282,8 +282,7 @@ void gfs2_attach_bufdata(struct gfs2_glock *gl, struct buffer_head *bh,
 		return;
 	}
 
-	bd = kmem_cache_alloc(gfs2_bufdata_cachep, GFP_NOFS | __GFP_NOFAIL),
-	memset(bd, 0, sizeof(struct gfs2_bufdata));
+	bd = kmem_cache_zalloc(gfs2_bufdata_cachep, GFP_NOFS | __GFP_NOFAIL),
 	bd->bd_bh = bh;
 	bd->bd_gl = gl;
 
diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index d8d69a7..56e3359 100644
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -16,6 +16,7 @@
 #include <linux/pagevec.h>
 #include <linux/mpage.h>
 #include <linux/fs.h>
+#include <linux/writeback.h>
 #include <linux/gfs2_ondisk.h>
 #include <linux/lm_interface.h>
 
@@ -157,6 +158,32 @@ out_ignore:
 }
 
 /**
+ * gfs2_writepages - Write a bunch of dirty pages back to disk
+ * @mapping: The mapping to write
+ * @wbc: Write-back control
+ *
+ * For journaled files and/or ordered writes this just falls back to the
+ * kernel's default writepages path for now. We will probably want to change
+ * that eventually (i.e. when we look at allocate on flush).
+ *
+ * For the data=writeback case though we can already ignore buffer heads
+ * and write whole extents at once. This is a big reduction in the
+ * number of I/O requests we send and the bmap calls we make in this case.
+ */
+static int gfs2_writepages(struct address_space *mapping,
+			   struct writeback_control *wbc)
+{
+	struct inode *inode = mapping->host;
+	struct gfs2_inode *ip = GFS2_I(inode);
+	struct gfs2_sbd *sdp = GFS2_SB(inode);
+
+	if (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK && !gfs2_is_jdata(ip))
+		return mpage_writepages(mapping, wbc, gfs2_get_block_noalloc);
+
+	return generic_writepages(mapping, wbc);
+}
+
+/**
  * stuffed_readpage - Fill in a Linux page with stuffed file data
  * @ip: the inode
  * @page: the page
@@ -256,7 +283,7 @@ out_unlock:
  *    the page lock and the glock) and return having done no I/O. Its
  *    obviously not something we'd want to do on too regular a basis.
  *    Any I/O we ignore at this time will be done via readpage later.
- * 2. We have to handle stuffed files here too.
+ * 2. We don't handle stuffed files here we let readpage do the honours.
  * 3. mpage_readpages() does most of the heavy lifting in the common case.
  * 4. gfs2_get_block() is relied upon to set BH_Boundary in the right places.
  * 5. We use LM_FLAG_TRY_1CB here, effectively we then have lock-ahead as
@@ -269,8 +296,7 @@ static int gfs2_readpages(struct file *file, struct address_space *mapping,
 	struct gfs2_inode *ip = GFS2_I(inode);
 	struct gfs2_sbd *sdp = GFS2_SB(inode);
 	struct gfs2_holder gh;
-	unsigned page_idx;
-	int ret;
+	int ret = 0;
 	int do_unlock = 0;
 
 	if (likely(file != &gfs2_internal_file_sentinel)) {
@@ -289,29 +315,8 @@ static int gfs2_readpages(struct file *file, struct address_space *mapping,
 			goto out_unlock;
 	}
 skip_lock:
-	if (gfs2_is_stuffed(ip)) {
-		struct pagevec lru_pvec;
-		pagevec_init(&lru_pvec, 0);
-		for (page_idx = 0; page_idx < nr_pages; page_idx++) {
-			struct page *page = list_entry(pages->prev, struct page, lru);
-			prefetchw(&page->flags);
-			list_del(&page->lru);
-			if (!add_to_page_cache(page, mapping,
-					       page->index, GFP_KERNEL)) {
-				ret = stuffed_readpage(ip, page);
-				unlock_page(page);
-				if (!pagevec_add(&lru_pvec, page))
-					 __pagevec_lru_add(&lru_pvec);
-			} else {
-				page_cache_release(page);
-			}
-		}
-		pagevec_lru_add(&lru_pvec);
-		ret = 0;
-	} else {
-		/* What we really want to do .... */
+	if (!gfs2_is_stuffed(ip))
 		ret = mpage_readpages(mapping, pages, nr_pages, gfs2_get_block);
-	}
 
 	if (do_unlock) {
 		gfs2_glock_dq_m(1, &gh);
@@ -356,8 +361,10 @@ static int gfs2_prepare_write(struct file *file, struct page *page,
 	gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_ATIME|LM_FLAG_TRY_1CB, &ip->i_gh);
 	error = gfs2_glock_nq_atime(&ip->i_gh);
 	if (unlikely(error)) {
-		if (error == GLR_TRYFAILED)
+		if (error == GLR_TRYFAILED) {
+			unlock_page(page);
 			error = AOP_TRUNCATED_PAGE;
+		}
 		goto out_uninit;
 	}
 
@@ -594,6 +601,36 @@ static void gfs2_invalidatepage(struct page *page, unsigned long offset)
 	return;
 }
 
+/**
+ * gfs2_ok_for_dio - check that dio is valid on this file
+ * @ip: The inode
+ * @rw: READ or WRITE
+ * @offset: The offset at which we are reading or writing
+ *
+ * Returns: 0 (to ignore the i/o request and thus fall back to buffered i/o)
+ *          1 (to accept the i/o request)
+ */
+static int gfs2_ok_for_dio(struct gfs2_inode *ip, int rw, loff_t offset)
+{
+	/*
+	 * Should we return an error here? I can't see that O_DIRECT for
+	 * a journaled file makes any sense. For now we'll silently fall
+	 * back to buffered I/O, likewise we do the same for stuffed
+	 * files since they are (a) small and (b) unaligned.
+	 */
+	if (gfs2_is_jdata(ip))
+		return 0;
+
+	if (gfs2_is_stuffed(ip))
+		return 0;
+
+	if (offset > i_size_read(&ip->i_inode))
+		return 0;
+	return 1;
+}
+
+
+
 static ssize_t gfs2_direct_IO(int rw, struct kiocb *iocb,
 			      const struct iovec *iov, loff_t offset,
 			      unsigned long nr_segs)
@@ -604,42 +641,28 @@ static ssize_t gfs2_direct_IO(int rw, struct kiocb *iocb,
 	struct gfs2_holder gh;
 	int rv;
 
-	if (rw == READ)
-		mutex_lock(&inode->i_mutex);
 	/*
-	 * Shared lock, even if its a write, since we do no allocation
-	 * on this path. All we need change is atime.
+	 * Deferred lock, even if its a write, since we do no allocation
+	 * on this path. All we need change is atime, and this lock mode
+	 * ensures that other nodes have flushed their buffered read caches
+	 * (i.e. their page cache entries for this inode). We do not,
+	 * unfortunately have the option of only flushing a range like
+	 * the VFS does.
 	 */
-	gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME, &gh);
+	gfs2_holder_init(ip->i_gl, LM_ST_DEFERRED, GL_ATIME, &gh);
 	rv = gfs2_glock_nq_atime(&gh);
 	if (rv)
-		goto out;
-
-	if (offset > i_size_read(inode))
-		goto out;
-
-	/*
-	 * Should we return an error here? I can't see that O_DIRECT for
-	 * a journaled file makes any sense. For now we'll silently fall
-	 * back to buffered I/O, likewise we do the same for stuffed
-	 * files since they are (a) small and (b) unaligned.
-	 */
-	if (gfs2_is_jdata(ip))
-		goto out;
-
-	if (gfs2_is_stuffed(ip))
-		goto out;
-
-	rv = blockdev_direct_IO_own_locking(rw, iocb, inode,
-					    inode->i_sb->s_bdev,
-					    iov, offset, nr_segs,
-					    gfs2_get_block_direct, NULL);
+		return rv;
+	rv = gfs2_ok_for_dio(ip, rw, offset);
+	if (rv != 1)
+		goto out; /* dio not valid, fall back to buffered i/o */
+
+	rv = blockdev_direct_IO_no_locking(rw, iocb, inode, inode->i_sb->s_bdev,
+					   iov, offset, nr_segs,
+					   gfs2_get_block_direct, NULL);
 out:
 	gfs2_glock_dq_m(1, &gh);
 	gfs2_holder_uninit(&gh);
-	if (rw == READ)
-		mutex_unlock(&inode->i_mutex);
-
 	return rv;
 }
 
@@ -763,6 +786,7 @@ out:
 
 const struct address_space_operations gfs2_file_aops = {
 	.writepage = gfs2_writepage,
+	.writepages = gfs2_writepages,
 	.readpage = gfs2_readpage,
 	.readpages = gfs2_readpages,
 	.sync_page = block_sync_page,
diff --git a/fs/gfs2/ops_dentry.c b/fs/gfs2/ops_dentry.c
index d355899..9187eb1 100644
--- a/fs/gfs2/ops_dentry.c
+++ b/fs/gfs2/ops_dentry.c
@@ -46,6 +46,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
 	struct gfs2_inum_host inum;
 	unsigned int type;
 	int error;
+	int had_lock=0;
 
 	if (inode && is_bad_inode(inode))
 		goto invalid;
@@ -53,9 +54,12 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
 	if (sdp->sd_args.ar_localcaching)
 		goto valid;
 
-	error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
-	if (error)
-		goto fail;
+	had_lock = gfs2_glock_is_locked_by_me(dip->i_gl);
+	if (!had_lock) {
+		error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
+		if (error)
+			goto fail;
+	} 
 
 	error = gfs2_dir_search(parent->d_inode, &dentry->d_name, &inum, &type);
 	switch (error) {
@@ -82,13 +86,15 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
 	}
 
 valid_gunlock:
-	gfs2_glock_dq_uninit(&d_gh);
+	if (!had_lock)
+		gfs2_glock_dq_uninit(&d_gh);
 valid:
 	dput(parent);
 	return 1;
 
 invalid_gunlock:
-	gfs2_glock_dq_uninit(&d_gh);
+	if (!had_lock)
+		gfs2_glock_dq_uninit(&d_gh);
 invalid:
 	if (inode && S_ISDIR(inode->i_mode)) {
 		if (have_submounts(dentry))
diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c
index b4e7b87..4855e8c 100644
--- a/fs/gfs2/ops_export.c
+++ b/fs/gfs2/ops_export.c
@@ -22,6 +22,7 @@
 #include "glock.h"
 #include "glops.h"
 #include "inode.h"
+#include "ops_dentry.h"
 #include "ops_export.h"
 #include "rgrp.h"
 #include "util.h"
@@ -112,13 +113,12 @@ struct get_name_filldir {
 	char *name;
 };
 
-static int get_name_filldir(void *opaque, const char *name, unsigned int length,
-			    u64 offset, struct gfs2_inum_host *inum,
-			    unsigned int type)
+static int get_name_filldir(void *opaque, const char *name, int length,
+			    loff_t offset, u64 inum, unsigned int type)
 {
-	struct get_name_filldir *gnfd = (struct get_name_filldir *)opaque;
+	struct get_name_filldir *gnfd = opaque;
 
-	if (!gfs2_inum_equal(inum, &gnfd->inum))
+	if (inum != gnfd->inum.no_addr)
 		return 0;
 
 	memcpy(gnfd->name, name, length);
@@ -189,6 +189,7 @@ static struct dentry *gfs2_get_parent(struct dentry *child)
 		return ERR_PTR(-ENOMEM);
 	}
 
+	dentry->d_op = &gfs2_dops;
 	return dentry;
 }
 
@@ -215,8 +216,7 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj)
 	}
 
 	error = gfs2_glock_nq_num(sdp, inum->no_addr, &gfs2_inode_glops,
-				  LM_ST_SHARED, LM_FLAG_ANY | GL_LOCAL_EXCL,
-				  &i_gh);
+				  LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
 	if (error)
 		return ERR_PTR(error);
 
@@ -269,6 +269,7 @@ out_inode:
 		return ERR_PTR(-ENOMEM);
 	}
 
+	dentry->d_op = &gfs2_dops;
 	return dentry;
 
 fail_rgd:
diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index faa07e4..c996aa7 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -43,15 +43,6 @@
 #include "util.h"
 #include "eaops.h"
 
-/* For regular, non-NFS */
-struct filldir_reg {
-	struct gfs2_sbd *fdr_sbd;
-	int fdr_prefetch;
-
-	filldir_t fdr_filldir;
-	void *fdr_opaque;
-};
-
 /*
  * Most fields left uninitialised to catch anybody who tries to
  * use them. f_flags set to prevent file_accessed() from touching
@@ -128,41 +119,6 @@ static loff_t gfs2_llseek(struct file *file, loff_t offset, int origin)
 }
 
 /**
- * filldir_func - Report a directory entry to the caller of gfs2_dir_read()
- * @opaque: opaque data used by the function
- * @name: the name of the directory entry
- * @length: the length of the name
- * @offset: the entry's offset in the directory
- * @inum: the inode number the entry points to
- * @type: the type of inode the entry points to
- *
- * Returns: 0 on success, 1 if buffer full
- */
-
-static int filldir_func(void *opaque, const char *name, unsigned int length,
-			u64 offset, struct gfs2_inum_host *inum,
-			unsigned int type)
-{
-	struct filldir_reg *fdr = (struct filldir_reg *)opaque;
-	struct gfs2_sbd *sdp = fdr->fdr_sbd;
-	int error;
-
-	error = fdr->fdr_filldir(fdr->fdr_opaque, name, length, offset,
-				 inum->no_addr, type);
-	if (error)
-		return 1;
-
-	if (fdr->fdr_prefetch && !(length == 1 && *name == '.')) {
-		gfs2_glock_prefetch_num(sdp, inum->no_addr, &gfs2_inode_glops,
-				       LM_ST_SHARED, LM_FLAG_TRY | LM_FLAG_ANY);
-		gfs2_glock_prefetch_num(sdp, inum->no_addr, &gfs2_iopen_glops,
-				       LM_ST_SHARED, LM_FLAG_TRY);
-	}
-
-	return 0;
-}
-
-/**
  * gfs2_readdir - Read directory entries from a directory
  * @file: The directory to read from
  * @dirent: Buffer for dirents
@@ -175,16 +131,10 @@ static int gfs2_readdir(struct file *file, void *dirent, filldir_t filldir)
 {
 	struct inode *dir = file->f_mapping->host;
 	struct gfs2_inode *dip = GFS2_I(dir);
-	struct filldir_reg fdr;
 	struct gfs2_holder d_gh;
 	u64 offset = file->f_pos;
 	int error;
 
-	fdr.fdr_sbd = GFS2_SB(dir);
-	fdr.fdr_prefetch = 1;
-	fdr.fdr_filldir = filldir;
-	fdr.fdr_opaque = dirent;
-
 	gfs2_holder_init(dip->i_gl, LM_ST_SHARED, GL_ATIME, &d_gh);
 	error = gfs2_glock_nq_atime(&d_gh);
 	if (error) {
@@ -192,7 +142,7 @@ static int gfs2_readdir(struct file *file, void *dirent, filldir_t filldir)
 		return error;
 	}
 
-	error = gfs2_dir_read(dir, &offset, &fdr, filldir_func);
+	error = gfs2_dir_read(dir, &offset, dirent, filldir);
 
 	gfs2_glock_dq_uninit(&d_gh);
 
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 636dda4..60f47bf 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -264,13 +264,23 @@ static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
 	struct gfs2_inode *dip = GFS2_I(dir);
 	struct gfs2_sbd *sdp = GFS2_SB(dir);
 	struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
-	struct gfs2_holder ghs[2];
+	struct gfs2_holder ghs[3];
+	struct gfs2_rgrpd *rgd;
+	struct gfs2_holder ri_gh;
 	int error;
 
+	error = gfs2_rindex_hold(sdp, &ri_gh);
+	if (error)
+		return error;
+
 	gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
-	gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
+	gfs2_holder_init(ip->i_gl,  LM_ST_EXCLUSIVE, 0, ghs + 1);
 
-	error = gfs2_glock_nq_m(2, ghs);
+	rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
+	gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
+
+
+	error = gfs2_glock_nq_m(3, ghs);
 	if (error)
 		goto out;
 
@@ -291,10 +301,12 @@ static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
 out_end_trans:
 	gfs2_trans_end(sdp);
 out_gunlock:
-	gfs2_glock_dq_m(2, ghs);
+	gfs2_glock_dq_m(3, ghs);
 out:
 	gfs2_holder_uninit(ghs);
 	gfs2_holder_uninit(ghs + 1);
+	gfs2_holder_uninit(ghs + 2);
+	gfs2_glock_dq_uninit(&ri_gh);
 	return error;
 }
 
@@ -449,13 +461,22 @@ static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
 	struct gfs2_inode *dip = GFS2_I(dir);
 	struct gfs2_sbd *sdp = GFS2_SB(dir);
 	struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
-	struct gfs2_holder ghs[2];
+	struct gfs2_holder ghs[3];
+	struct gfs2_rgrpd *rgd;
+	struct gfs2_holder ri_gh;
 	int error;
 
+
+	error = gfs2_rindex_hold(sdp, &ri_gh);
+	if (error)
+		return error;
 	gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
 	gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
 
-	error = gfs2_glock_nq_m(2, ghs);
+	rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
+	gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
+
+	error = gfs2_glock_nq_m(3, ghs);
 	if (error)
 		goto out;
 
@@ -483,10 +504,12 @@ static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
 	gfs2_trans_end(sdp);
 
 out_gunlock:
-	gfs2_glock_dq_m(2, ghs);
+	gfs2_glock_dq_m(3, ghs);
 out:
 	gfs2_holder_uninit(ghs);
 	gfs2_holder_uninit(ghs + 1);
+	gfs2_holder_uninit(ghs + 2);
+	gfs2_glock_dq_uninit(&ri_gh);
 	return error;
 }
 
@@ -547,7 +570,8 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
 	struct gfs2_inode *ip = GFS2_I(odentry->d_inode);
 	struct gfs2_inode *nip = NULL;
 	struct gfs2_sbd *sdp = GFS2_SB(odir);
-	struct gfs2_holder ghs[4], r_gh;
+	struct gfs2_holder ghs[5], r_gh;
+	struct gfs2_rgrpd *nrgd;
 	unsigned int num_gh;
 	int dir_rename = 0;
 	int alloc_required;
@@ -587,6 +611,13 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
 	if (nip) {
 		gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
 		num_gh++;
+		/* grab the resource lock for unlink flag twiddling 
+		 * this is the case of the target file already existing
+		 * so we unlink before doing the rename
+		 */
+		nrgd = gfs2_blk2rgrpd(sdp, nip->i_num.no_addr);
+		if (nrgd)
+			gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
 	}
 
 	error = gfs2_glock_nq_m(num_gh, ghs);
@@ -684,12 +715,12 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
 		error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
 					 al->al_rgd->rd_ri.ri_length +
 					 4 * RES_DINODE + 4 * RES_LEAF +
-					 RES_STATFS + RES_QUOTA, 0);
+					 RES_STATFS + RES_QUOTA + 4, 0);
 		if (error)
 			goto out_ipreserv;
 	} else {
 		error = gfs2_trans_begin(sdp, 4 * RES_DINODE +
-					 5 * RES_LEAF, 0);
+					 5 * RES_LEAF + 4, 0);
 		if (error)
 			goto out_gunlock;
 	}
@@ -728,7 +759,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
 		error = gfs2_meta_inode_buffer(ip, &dibh);
 		if (error)
 			goto out_end_trans;
-		ip->i_inode.i_ctime.tv_sec = get_seconds();
+		ip->i_inode.i_ctime = CURRENT_TIME_SEC;
 		gfs2_trans_add_bh(ip->i_gl, dibh, 1);
 		gfs2_dinode_out(ip, dibh->b_data);
 		brelse(dibh);
@@ -1018,7 +1049,7 @@ static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
 	}
 
 	generic_fillattr(inode, stat);
-	if (unlock);
+	if (unlock)
 		gfs2_glock_dq_uninit(&gh);
 
 	return 0;
@@ -1084,7 +1115,7 @@ static int gfs2_removexattr(struct dentry *dentry, const char *name)
 	return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er);
 }
 
-struct inode_operations gfs2_file_iops = {
+const struct inode_operations gfs2_file_iops = {
 	.permission = gfs2_permission,
 	.setattr = gfs2_setattr,
 	.getattr = gfs2_getattr,
@@ -1094,7 +1125,7 @@ struct inode_operations gfs2_file_iops = {
 	.removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_dev_iops = {
+const struct inode_operations gfs2_dev_iops = {
 	.permission = gfs2_permission,
 	.setattr = gfs2_setattr,
 	.getattr = gfs2_getattr,
@@ -1104,7 +1135,7 @@ struct inode_operations gfs2_dev_iops = {
 	.removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_dir_iops = {
+const struct inode_operations gfs2_dir_iops = {
 	.create = gfs2_create,
 	.lookup = gfs2_lookup,
 	.link = gfs2_link,
@@ -1123,7 +1154,7 @@ struct inode_operations gfs2_dir_iops = {
 	.removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_symlink_iops = {
+const struct inode_operations gfs2_symlink_iops = {
 	.readlink = gfs2_readlink,
 	.follow_link = gfs2_follow_link,
 	.permission = gfs2_permission,
diff --git a/fs/gfs2/ops_inode.h b/fs/gfs2/ops_inode.h
index b15acb4..34f0caa 100644
--- a/fs/gfs2/ops_inode.h
+++ b/fs/gfs2/ops_inode.h
@@ -12,9 +12,9 @@
 
 #include <linux/fs.h>
 
-extern struct inode_operations gfs2_file_iops;
-extern struct inode_operations gfs2_dir_iops;
-extern struct inode_operations gfs2_symlink_iops;
-extern struct inode_operations gfs2_dev_iops;
+extern const struct inode_operations gfs2_file_iops;
+extern const struct inode_operations gfs2_dir_iops;
+extern const struct inode_operations gfs2_symlink_iops;
+extern const struct inode_operations gfs2_dev_iops;
 
 #endif /* __OPS_INODE_DOT_H__ */
diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c
index 7685b46..b89999d3 100644
--- a/fs/gfs2/ops_super.c
+++ b/fs/gfs2/ops_super.c
@@ -173,6 +173,9 @@ static void gfs2_write_super_lockfs(struct super_block *sb)
 	struct gfs2_sbd *sdp = sb->s_fs_info;
 	int error;
 
+	if (test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
+		return;
+
 	for (;;) {
 		error = gfs2_freeze_fs(sdp);
 		if (!error)
@@ -426,6 +429,12 @@ static void gfs2_delete_inode(struct inode *inode)
 	}
 
 	error = gfs2_dinode_dealloc(ip);
+	/*
+	 * Must do this before unlock to avoid trying to write back
+	 * potentially dirty data now that inode no longer exists
+	 * on disk.
+	 */
+	truncate_inode_pages(&inode->i_data, 0);
 
 out_unlock:
 	gfs2_glock_dq(&ip->i_iopen_gh);
@@ -443,14 +452,12 @@ out:
 
 static struct inode *gfs2_alloc_inode(struct super_block *sb)
 {
-	struct gfs2_sbd *sdp = sb->s_fs_info;
 	struct gfs2_inode *ip;
 
 	ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL);
 	if (ip) {
 		ip->i_flags = 0;
 		ip->i_gl = NULL;
-		ip->i_greedy = gfs2_tune_get(sdp, gt_greedy_default);
 		ip->i_last_pfault = jiffies;
 	}
 	return &ip->i_inode;
@@ -461,7 +468,7 @@ static void gfs2_destroy_inode(struct inode *inode)
 	kmem_cache_free(gfs2_inode_cachep, inode);
 }
 
-struct super_operations gfs2_super_ops = {
+const struct super_operations gfs2_super_ops = {
 	.alloc_inode		= gfs2_alloc_inode,
 	.destroy_inode		= gfs2_destroy_inode,
 	.write_inode		= gfs2_write_inode,
diff --git a/fs/gfs2/ops_super.h b/fs/gfs2/ops_super.h
index 9de73f0..442a274 100644
--- a/fs/gfs2/ops_super.h
+++ b/fs/gfs2/ops_super.h
@@ -12,6 +12,6 @@
 
 #include <linux/fs.h>
 
-extern struct super_operations gfs2_super_ops;
+extern const struct super_operations gfs2_super_ops;
 
 #endif /* __OPS_SUPER_DOT_H__ */
diff --git a/fs/gfs2/ops_vm.c b/fs/gfs2/ops_vm.c
index 45a5f11..14b380f 100644
--- a/fs/gfs2/ops_vm.c
+++ b/fs/gfs2/ops_vm.c
@@ -28,34 +28,13 @@
 #include "trans.h"
 #include "util.h"
 
-static void pfault_be_greedy(struct gfs2_inode *ip)
-{
-	unsigned int time;
-
-	spin_lock(&ip->i_spin);
-	time = ip->i_greedy;
-	ip->i_last_pfault = jiffies;
-	spin_unlock(&ip->i_spin);
-
-	igrab(&ip->i_inode);
-	if (gfs2_glock_be_greedy(ip->i_gl, time))
-		iput(&ip->i_inode);
-}
-
 static struct page *gfs2_private_nopage(struct vm_area_struct *area,
 					unsigned long address, int *type)
 {
 	struct gfs2_inode *ip = GFS2_I(area->vm_file->f_mapping->host);
-	struct page *result;
 
 	set_bit(GIF_PAGED, &ip->i_flags);
-
-	result = filemap_nopage(area, address, type);
-
-	if (result && result != NOPAGE_OOM)
-		pfault_be_greedy(ip);
-
-	return result;
+	return filemap_nopage(area, address, type);
 }
 
 static int alloc_page_backing(struct gfs2_inode *ip, struct page *page)
@@ -167,7 +146,6 @@ static struct page *gfs2_sharewrite_nopage(struct vm_area_struct *area,
 		set_page_dirty(result);
 	}
 
-	pfault_be_greedy(ip);
 out:
 	gfs2_glock_dq_uninit(&i_gh);
 
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 43a24f2..70f424f 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -71,17 +71,12 @@ void gfs2_tune_init(struct gfs2_tune *gt)
 	gt->gt_atime_quantum = 3600;
 	gt->gt_new_files_jdata = 0;
 	gt->gt_new_files_directio = 0;
-	gt->gt_max_atomic_write = 4 << 20;
 	gt->gt_max_readahead = 1 << 18;
 	gt->gt_lockdump_size = 131072;
 	gt->gt_stall_secs = 600;
 	gt->gt_complain_secs = 10;
 	gt->gt_reclaim_limit = 5000;
 	gt->gt_entries_per_readdir = 32;
-	gt->gt_prefetch_secs = 10;
-	gt->gt_greedy_default = HZ / 10;
-	gt->gt_greedy_quantum = HZ / 40;
-	gt->gt_greedy_max = HZ / 4;
 	gt->gt_statfs_quantum = 30;
 	gt->gt_statfs_slow = 0;
 }
@@ -359,8 +354,7 @@ int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
 	mutex_lock(&sdp->sd_jindex_mutex);
 
 	for (;;) {
-		error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED,
-					   GL_LOCAL_EXCL, ji_gh);
+		error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh);
 		if (error)
 			break;
 
@@ -529,8 +523,7 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp)
 	struct gfs2_log_header_host head;
 	int error;
 
-	error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED,
-				   GL_LOCAL_EXCL, &t_gh);
+	error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh);
 	if (error)
 		return error;
 
@@ -583,9 +576,8 @@ int gfs2_make_fs_ro(struct gfs2_sbd *sdp)
 	gfs2_quota_sync(sdp);
 	gfs2_statfs_sync(sdp);
 
-	error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED,
-				GL_LOCAL_EXCL | GL_NOCACHE,
-				&t_gh);
+	error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE,
+				   &t_gh);
 	if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
 		return error;
 
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 983eaf1..d01f9f0 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -436,17 +436,12 @@ TUNE_ATTR(atime_quantum, 0);
 TUNE_ATTR(max_readahead, 0);
 TUNE_ATTR(complain_secs, 0);
 TUNE_ATTR(reclaim_limit, 0);
-TUNE_ATTR(prefetch_secs, 0);
 TUNE_ATTR(statfs_slow, 0);
 TUNE_ATTR(new_files_jdata, 0);
 TUNE_ATTR(new_files_directio, 0);
 TUNE_ATTR(quota_simul_sync, 1);
 TUNE_ATTR(quota_cache_secs, 1);
-TUNE_ATTR(max_atomic_write, 1);
 TUNE_ATTR(stall_secs, 1);
-TUNE_ATTR(greedy_default, 1);
-TUNE_ATTR(greedy_quantum, 1);
-TUNE_ATTR(greedy_max, 1);
 TUNE_ATTR(statfs_quantum, 1);
 TUNE_ATTR_DAEMON(scand_secs, scand_process);
 TUNE_ATTR_DAEMON(recoverd_secs, recoverd_process);
@@ -465,15 +460,10 @@ static struct attribute *tune_attrs[] = {
 	&tune_attr_max_readahead.attr,
 	&tune_attr_complain_secs.attr,
 	&tune_attr_reclaim_limit.attr,
-	&tune_attr_prefetch_secs.attr,
 	&tune_attr_statfs_slow.attr,
 	&tune_attr_quota_simul_sync.attr,
 	&tune_attr_quota_cache_secs.attr,
-	&tune_attr_max_atomic_write.attr,
 	&tune_attr_stall_secs.attr,
-	&tune_attr_greedy_default.attr,
-	&tune_attr_greedy_quantum.attr,
-	&tune_attr_greedy_max.attr,
 	&tune_attr_statfs_quantum.attr,
 	&tune_attr_scand_secs.attr,
 	&tune_attr_recoverd_secs.attr,
diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index e2e0358..7c69b98 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -320,7 +320,7 @@ const struct file_operations hfs_dir_operations = {
 	.release	= hfs_dir_release,
 };
 
-struct inode_operations hfs_dir_inode_operations = {
+const struct inode_operations hfs_dir_inode_operations = {
 	.create		= hfs_create,
 	.lookup		= hfs_lookup,
 	.unlink		= hfs_unlink,
diff --git a/fs/hfs/hfs.h b/fs/hfs/hfs.h
index 88099ab..1445e3a 100644
--- a/fs/hfs/hfs.h
+++ b/fs/hfs/hfs.h
@@ -83,8 +83,6 @@
 
 /*======== HFS structures as they appear on the disk ========*/
 
-#define __packed __attribute__ ((packed))
-
 /* Pascal-style string of up to 31 characters */
 struct hfs_name {
 	u8 len;
diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h
index 735332d..147374b 100644
--- a/fs/hfs/hfs_fs.h
+++ b/fs/hfs/hfs_fs.h
@@ -170,7 +170,7 @@ extern void hfs_cat_build_key(struct super_block *, btree_key *, u32, struct qst
 
 /* dir.c */
 extern const struct file_operations hfs_dir_operations;
-extern struct inode_operations hfs_dir_inode_operations;
+extern const struct inode_operations hfs_dir_inode_operations;
 
 /* extent.c */
 extern int hfs_ext_keycmp(const btree_key *, const btree_key *);
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 5cb7f8f..fafcba5 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -18,7 +18,7 @@
 #include "btree.h"
 
 static const struct file_operations hfs_file_operations;
-static struct inode_operations hfs_file_inode_operations;
+static const struct inode_operations hfs_file_inode_operations;
 
 /*================ Variable-like macros ================*/
 
@@ -612,7 +612,7 @@ static const struct file_operations hfs_file_operations = {
 	.release	= hfs_file_release,
 };
 
-static struct inode_operations hfs_file_inode_operations = {
+static const struct inode_operations hfs_file_inode_operations = {
 	.lookup		= hfs_file_lookup,
 	.truncate	= hfs_file_truncate,
 	.setattr	= hfs_inode_setattr,
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index a369879..623f509 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -154,7 +154,7 @@ static void hfs_destroy_inode(struct inode *inode)
 	kmem_cache_free(hfs_inode_cachep, HFS_I(inode));
 }
 
-static struct super_operations hfs_super_operations = {
+static const struct super_operations hfs_super_operations = {
 	.alloc_inode	= hfs_alloc_inode,
 	.destroy_inode	= hfs_destroy_inode,
 	.write_inode	= hfs_write_inode,
diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index e886ac8..7813700 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -471,7 +471,7 @@ static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry,
 	return res;
 }
 
-struct inode_operations hfsplus_dir_inode_operations = {
+const struct inode_operations hfsplus_dir_inode_operations = {
 	.lookup		= hfsplus_lookup,
 	.create		= hfsplus_create,
 	.link		= hfsplus_link,
diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h
index 4920553..fe99fe8 100644
--- a/fs/hfsplus/hfsplus_raw.h
+++ b/fs/hfsplus/hfsplus_raw.h
@@ -15,8 +15,6 @@
 
 #include <linux/types.h>
 
-#define __packed __attribute__ ((packed))
-
 /* Some constants */
 #define HFSPLUS_SECTOR_SIZE        512
 #define HFSPLUS_SECTOR_SHIFT         9
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index 75e8c4d..642012a 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -268,10 +268,10 @@ static int hfsplus_file_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-extern struct inode_operations hfsplus_dir_inode_operations;
+extern const struct inode_operations hfsplus_dir_inode_operations;
 extern struct file_operations hfsplus_dir_operations;
 
-static struct inode_operations hfsplus_file_inode_operations = {
+static const struct inode_operations hfsplus_file_inode_operations = {
 	.lookup		= hfsplus_file_lookup,
 	.truncate	= hfsplus_file_truncate,
 	.permission	= hfsplus_permission,
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 0f513c6..5a282f6 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -260,7 +260,7 @@ static int hfsplus_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations hfsplus_sops = {
+static const struct super_operations hfsplus_sops = {
 	.alloc_inode	= hfsplus_alloc_inode,
 	.destroy_inode	= hfsplus_destroy_inode,
 	.read_inode	= hfsplus_read_inode,
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 69a376f..e965eb1 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -52,8 +52,8 @@ static int append = 0;
 
 #define HOSTFS_SUPER_MAGIC 0x00c0ffee
 
-static struct inode_operations hostfs_iops;
-static struct inode_operations hostfs_dir_iops;
+static const struct inode_operations hostfs_iops;
+static const struct inode_operations hostfs_dir_iops;
 static const struct address_space_operations hostfs_link_aops;
 
 #ifndef MODULE
@@ -309,7 +309,7 @@ static void hostfs_read_inode(struct inode *inode)
 	read_inode(inode);
 }
 
-static struct super_operations hostfs_sbops = {
+static const struct super_operations hostfs_sbops = {
 	.alloc_inode	= hostfs_alloc_inode,
 	.drop_inode	= generic_delete_inode,
 	.delete_inode   = hostfs_delete_inode,
@@ -880,7 +880,7 @@ int hostfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
 	return(0);
 }
 
-static struct inode_operations hostfs_iops = {
+static const struct inode_operations hostfs_iops = {
 	.create		= hostfs_create,
 	.link		= hostfs_link,
 	.unlink		= hostfs_unlink,
@@ -894,7 +894,7 @@ static struct inode_operations hostfs_iops = {
 	.getattr	= hostfs_getattr,
 };
 
-static struct inode_operations hostfs_dir_iops = {
+static const struct inode_operations hostfs_dir_iops = {
 	.create		= hostfs_create,
 	.lookup		= hostfs_lookup,
 	.link		= hostfs_link,
diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c
index fb4c891..b4eafc0 100644
--- a/fs/hpfs/file.c
+++ b/fs/hpfs/file.c
@@ -132,7 +132,7 @@ const struct file_operations hpfs_file_ops =
 	.sendfile	= generic_file_sendfile,
 };
 
-struct inode_operations hpfs_file_iops =
+const struct inode_operations hpfs_file_iops =
 {
 	.truncate	= hpfs_truncate,
 	.setattr	= hpfs_notify_change,
diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h
index 1c07aa8..42ff60c 100644
--- a/fs/hpfs/hpfs_fn.h
+++ b/fs/hpfs/hpfs_fn.h
@@ -266,7 +266,7 @@ void hpfs_set_ea(struct inode *, struct fnode *, char *, char *, int);
 
 int hpfs_file_fsync(struct file *, struct dentry *, int);
 extern const struct file_operations hpfs_file_ops;
-extern struct inode_operations hpfs_file_iops;
+extern const struct inode_operations hpfs_file_iops;
 extern const struct address_space_operations hpfs_aops;
 
 /* inode.c */
@@ -302,7 +302,7 @@ void hpfs_decide_conv(struct inode *, unsigned char *, unsigned);
 
 /* namei.c */
 
-extern struct inode_operations hpfs_dir_iops;
+extern const struct inode_operations hpfs_dir_iops;
 extern const struct address_space_operations hpfs_symlink_aops;
 
 static inline struct hpfs_inode_info *hpfs_i(struct inode *inode)
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
index 2507e73..9953cf9 100644
--- a/fs/hpfs/namei.c
+++ b/fs/hpfs/namei.c
@@ -659,7 +659,7 @@ end1:
 	return err;
 }
 
-struct inode_operations hpfs_dir_iops =
+const struct inode_operations hpfs_dir_iops =
 {
 	.create		= hpfs_create,
 	.lookup		= hpfs_lookup,
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index d4abc1a..e0174e3 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -426,7 +426,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
 
 /* Super operations */
 
-static struct super_operations hpfs_sops =
+static const struct super_operations hpfs_sops =
 {
 	.alloc_inode	= hpfs_alloc_inode,
 	.destroy_inode	= hpfs_destroy_inode,
diff --git a/fs/hppfs/hppfs_kern.c b/fs/hppfs/hppfs_kern.c
index afd340a..affb741 100644
--- a/fs/hppfs/hppfs_kern.c
+++ b/fs/hppfs/hppfs_kern.c
@@ -43,7 +43,7 @@ static inline struct hppfs_inode_info *HPPFS_I(struct inode *inode)
 
 #define HPPFS_SUPER_MAGIC 0xb00000ee
 
-static struct super_operations hppfs_sbops;
+static const struct super_operations hppfs_sbops;
 
 static int is_pid(struct dentry *dentry)
 {
@@ -212,7 +212,7 @@ static struct dentry *hppfs_lookup(struct inode *ino, struct dentry *dentry,
 	return(ERR_PTR(err));
 }
 
-static struct inode_operations hppfs_file_iops = {
+static const struct inode_operations hppfs_file_iops = {
 };
 
 static ssize_t read_proc(struct file *file, char __user *buf, ssize_t count,
@@ -649,7 +649,7 @@ static void hppfs_destroy_inode(struct inode *inode)
 	kfree(HPPFS_I(inode));
 }
 
-static struct super_operations hppfs_sbops = {
+static const struct super_operations hppfs_sbops = {
 	.alloc_inode	= hppfs_alloc_inode,
 	.destroy_inode	= hppfs_destroy_inode,
 	.read_inode	= hppfs_read_inode,
@@ -693,11 +693,11 @@ static void* hppfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return ret;
 }
 
-static struct inode_operations hppfs_dir_iops = {
+static const struct inode_operations hppfs_dir_iops = {
 	.lookup		= hppfs_lookup,
 };
 
-static struct inode_operations hppfs_link_iops = {
+static const struct inode_operations hppfs_link_iops = {
 	.readlink	= hppfs_readlink,
 	.follow_link	= hppfs_follow_link,
 };
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 4f4cd13..8c718a3 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -33,11 +33,11 @@
 /* some random number */
 #define HUGETLBFS_MAGIC	0x958458f6
 
-static struct super_operations hugetlbfs_ops;
+static const struct super_operations hugetlbfs_ops;
 static const struct address_space_operations hugetlbfs_aops;
 const struct file_operations hugetlbfs_file_operations;
-static struct inode_operations hugetlbfs_dir_inode_operations;
-static struct inode_operations hugetlbfs_inode_operations;
+static const struct inode_operations hugetlbfs_dir_inode_operations;
+static const struct inode_operations hugetlbfs_inode_operations;
 
 static struct backing_dev_info hugetlbfs_backing_dev_info = {
 	.ra_pages	= 0,	/* No readahead */
@@ -449,10 +449,13 @@ static int hugetlbfs_symlink(struct inode *dir,
 }
 
 /*
- * For direct-IO reads into hugetlb pages
+ * mark the head page dirty
  */
 static int hugetlbfs_set_page_dirty(struct page *page)
 {
+	struct page *head = (struct page *)page_private(page);
+
+	SetPageDirty(head);
 	return 0;
 }
 
@@ -560,7 +563,7 @@ const struct file_operations hugetlbfs_file_operations = {
 	.get_unmapped_area	= hugetlb_get_unmapped_area,
 };
 
-static struct inode_operations hugetlbfs_dir_inode_operations = {
+static const struct inode_operations hugetlbfs_dir_inode_operations = {
 	.create		= hugetlbfs_create,
 	.lookup		= simple_lookup,
 	.link		= simple_link,
@@ -573,11 +576,11 @@ static struct inode_operations hugetlbfs_dir_inode_operations = {
 	.setattr	= hugetlbfs_setattr,
 };
 
-static struct inode_operations hugetlbfs_inode_operations = {
+static const struct inode_operations hugetlbfs_inode_operations = {
 	.setattr	= hugetlbfs_setattr,
 };
 
-static struct super_operations hugetlbfs_ops = {
+static const struct super_operations hugetlbfs_ops = {
 	.alloc_inode    = hugetlbfs_alloc_inode,
 	.destroy_inode  = hugetlbfs_destroy_inode,
 	.statfs		= hugetlbfs_statfs,
diff --git a/fs/inode.c b/fs/inode.c
index bf21dc6..5abb097 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -414,7 +414,8 @@ static void prune_icache(int nr_to_scan)
 			__iget(inode);
 			spin_unlock(&inode_lock);
 			if (remove_inode_buffers(inode))
-				reap += invalidate_inode_pages(&inode->i_data);
+				reap += invalidate_mapping_pages(&inode->i_data,
+								0, -1);
 			iput(inode);
 			spin_lock(&inode_lock);
 
@@ -709,7 +710,7 @@ EXPORT_SYMBOL(iunique);
 struct inode *igrab(struct inode *inode)
 {
 	spin_lock(&inode_lock);
-	if (!(inode->i_state & (I_FREEING|I_WILL_FREE)))
+	if (!(inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)))
 		__iget(inode);
 	else
 		/*
@@ -999,7 +1000,7 @@ EXPORT_SYMBOL(remove_inode_hash);
  */
 void generic_delete_inode(struct inode *inode)
 {
-	struct super_operations *op = inode->i_sb->s_op;
+	const struct super_operations *op = inode->i_sb->s_op;
 
 	list_del_init(&inode->i_list);
 	list_del_init(&inode->i_sb_list);
@@ -1092,7 +1093,7 @@ EXPORT_SYMBOL_GPL(generic_drop_inode);
  */
 static inline void iput_final(struct inode *inode)
 {
-	struct super_operations *op = inode->i_sb->s_op;
+	const struct super_operations *op = inode->i_sb->s_op;
 	void (*drop)(struct inode *) = generic_drop_inode;
 
 	if (op && op->drop_inode)
@@ -1112,7 +1113,7 @@ static inline void iput_final(struct inode *inode)
 void iput(struct inode *inode)
 {
 	if (inode) {
-		struct super_operations *op = inode->i_sb->s_op;
+		const struct super_operations *op = inode->i_sb->s_op;
 
 		BUG_ON(inode->i_state == I_CLEAR);
 
@@ -1160,11 +1161,9 @@ void touch_atime(struct vfsmount *mnt, struct dentry *dentry)
 	struct inode *inode = dentry->d_inode;
 	struct timespec now;
 
-	if (IS_RDONLY(inode))
-		return;
 	if (inode->i_flags & S_NOATIME)
 		return;
-	if (inode->i_sb->s_flags & MS_NOATIME)
+	if (IS_NOATIME(inode))
 		return;
 	if ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))
 		return;
@@ -1252,33 +1251,6 @@ int inode_needs_sync(struct inode *inode)
 
 EXPORT_SYMBOL(inode_needs_sync);
 
-/*
- *	Quota functions that want to walk the inode lists..
- */
-#ifdef CONFIG_QUOTA
-
-void remove_dquot_ref(struct super_block *sb, int type,
-			struct list_head *tofree_head)
-{
-	struct inode *inode;
-
-	if (!sb->dq_op)
-		return;	/* nothing to do */
-	spin_lock(&inode_lock);	/* This lock is for inodes code */
-
-	/*
-	 * We don't have to lock against quota code - test IS_QUOTAINIT is
-	 * just for speedup...
-	 */
-	list_for_each_entry(inode, &sb->s_inodes, i_sb_list)
-		if (!IS_NOQUOTA(inode))
-			remove_inode_dquot_ref(inode, type, tofree_head);
-
-	spin_unlock(&inode_lock);
-}
-
-#endif
-
 int inode_wait(void *word)
 {
 	schedule();
diff --git a/fs/inotify_user.c b/fs/inotify_user.c
index 55f6da5..9f2224f 100644
--- a/fs/inotify_user.c
+++ b/fs/inotify_user.c
@@ -455,8 +455,16 @@ static ssize_t inotify_read(struct file *file, char __user *buf,
 			break;
 
 		kevent = inotify_dev_get_event(dev);
-		if (event_size + kevent->event.len > count)
+		if (event_size + kevent->event.len > count) {
+			if (ret == 0 && count > 0) {
+				/*
+				 * could not get a single event because we
+				 * didn't have enough buffer space.
+				 */
+				ret = -EINVAL;
+			}
 			break;
+		}
 
 		if (copy_to_user(buf, &kevent->event, event_size)) {
 			ret = -EFAULT;
diff --git a/fs/ioprio.c b/fs/ioprio.c
index 89e8da1..10d2c21 100644
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -60,6 +60,7 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
 	int data = IOPRIO_PRIO_DATA(ioprio);
 	struct task_struct *p, *g;
 	struct user_struct *user;
+	struct pid *pgrp;
 	int ret;
 
 	switch (class) {
@@ -98,12 +99,14 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
 			break;
 		case IOPRIO_WHO_PGRP:
 			if (!who)
-				who = process_group(current);
-			do_each_task_pid(who, PIDTYPE_PGID, p) {
+				pgrp = task_pgrp(current);
+			else
+				pgrp = find_pid(who);
+			do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
 				ret = set_task_ioprio(p, ioprio);
 				if (ret)
 					break;
-			} while_each_task_pid(who, PIDTYPE_PGID, p);
+			} while_each_pid_task(pgrp, PIDTYPE_PGID, p);
 			break;
 		case IOPRIO_WHO_USER:
 			if (!who)
@@ -167,6 +170,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
 {
 	struct task_struct *g, *p;
 	struct user_struct *user;
+	struct pid *pgrp;
 	int ret = -ESRCH;
 	int tmpio;
 
@@ -182,8 +186,10 @@ asmlinkage long sys_ioprio_get(int which, int who)
 			break;
 		case IOPRIO_WHO_PGRP:
 			if (!who)
-				who = process_group(current);
-			do_each_task_pid(who, PIDTYPE_PGID, p) {
+				pgrp = task_pgrp(current);
+			else
+				pgrp = find_pid(who);
+			do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
 				tmpio = get_task_ioprio(p);
 				if (tmpio < 0)
 					continue;
@@ -191,7 +197,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
 					ret = tmpio;
 				else
 					ret = ioprio_best(ret, tmpio);
-			} while_each_task_pid(who, PIDTYPE_PGID, p);
+			} while_each_pid_task(pgrp, PIDTYPE_PGID, p);
 			break;
 		case IOPRIO_WHO_USER:
 			if (!who)
diff --git a/fs/isofs/dir.c b/fs/isofs/dir.c
index 4af2548..0e94c31 100644
--- a/fs/isofs/dir.c
+++ b/fs/isofs/dir.c
@@ -24,7 +24,7 @@ const struct file_operations isofs_dir_operations =
 /*
  * directories can handle most operations...
  */
-struct inode_operations isofs_dir_inode_operations =
+const struct inode_operations isofs_dir_inode_operations =
 {
 	.lookup		= isofs_lookup,
 };
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index ea55b6c..64a96cd 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -106,7 +106,7 @@ static int isofs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations isofs_sops = {
+static const struct super_operations isofs_sops = {
 	.alloc_inode	= isofs_alloc_inode,
 	.destroy_inode	= isofs_destroy_inode,
 	.read_inode	= isofs_read_inode,
diff --git a/fs/isofs/isofs.h b/fs/isofs/isofs.h
index e6308c8..efe2872 100644
--- a/fs/isofs/isofs.h
+++ b/fs/isofs/isofs.h
@@ -174,7 +174,7 @@ isofs_normalize_block_and_offset(struct iso_directory_record* de,
 	}
 }
 
-extern struct inode_operations isofs_dir_inode_operations;
+extern const struct inode_operations isofs_dir_inode_operations;
 extern const struct file_operations isofs_dir_operations;
 extern const struct address_space_operations isofs_symlink_aops;
 extern struct export_operations isofs_export_ops;
diff --git a/fs/jffs/inode-v23.c b/fs/jffs/inode-v23.c
index 43baa1a..9602b92 100644
--- a/fs/jffs/inode-v23.c
+++ b/fs/jffs/inode-v23.c
@@ -54,11 +54,11 @@
 
 static int jffs_remove(struct inode *dir, struct dentry *dentry, int type);
 
-static struct super_operations jffs_ops;
+static const struct super_operations jffs_ops;
 static const struct file_operations jffs_file_operations;
-static struct inode_operations jffs_file_inode_operations;
+static const struct inode_operations jffs_file_inode_operations;
 static const struct file_operations jffs_dir_operations;
-static struct inode_operations jffs_dir_inode_operations;
+static const struct inode_operations jffs_dir_inode_operations;
 static const struct address_space_operations jffs_address_operations;
 
 struct kmem_cache     *node_cache = NULL;
@@ -296,7 +296,7 @@ jffs_setattr(struct dentry *dentry, struct iattr *iattr)
 		inode->i_blocks = (inode->i_size + 511) >> 9;
 
 		if (len) {
-			invalidate_inode_pages(inode->i_mapping);
+			invalidate_mapping_pages(inode->i_mapping, 0, -1);
 		}
 		inode->i_ctime = CURRENT_TIME_SEC;
 		inode->i_mtime = inode->i_ctime;
@@ -1518,7 +1518,7 @@ jffs_file_write(struct file *filp, const char *buf, size_t count,
 	}
 	inode->i_ctime = inode->i_mtime = CURRENT_TIME_SEC;
 	mark_inode_dirty(inode);
-	invalidate_inode_pages(inode->i_mapping);
+	invalidate_mapping_pages(inode->i_mapping, 0, -1);
 
  out_isem:
 	return err;
@@ -1642,7 +1642,7 @@ static const struct file_operations jffs_file_operations =
 };
 
 
-static struct inode_operations jffs_file_inode_operations =
+static const struct inode_operations jffs_file_inode_operations =
 {
 	.lookup		= jffs_lookup,          /* lookup */
 	.setattr	= jffs_setattr,
@@ -1655,7 +1655,7 @@ static const struct file_operations jffs_dir_operations =
 };
 
 
-static struct inode_operations jffs_dir_inode_operations =
+static const struct inode_operations jffs_dir_inode_operations =
 {
 	.create		= jffs_create,
 	.lookup		= jffs_lookup,
@@ -1774,7 +1774,7 @@ static int jffs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations jffs_ops =
+static const struct super_operations jffs_ops =
 {
 	.read_inode	= jffs_read_inode,
 	.delete_inode 	= jffs_delete_inode,
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index da6034d..cdbe2fe 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -46,7 +46,7 @@ const struct file_operations jffs2_dir_operations =
 };
 
 
-struct inode_operations jffs2_dir_inode_operations =
+const struct inode_operations jffs2_dir_inode_operations =
 {
 	.create =	jffs2_create,
 	.lookup =	jffs2_lookup,
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index 242875f..e82eeaf 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -54,7 +54,7 @@ const struct file_operations jffs2_file_operations =
 
 /* jffs2_file_inode_operations */
 
-struct inode_operations jffs2_file_inode_operations =
+const struct inode_operations jffs2_file_inode_operations =
 {
 	.permission =	jffs2_permission,
 	.setattr =	jffs2_setattr,
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index 9f41fc0..e07a0ed 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -153,11 +153,11 @@ void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c);
 
 /* dir.c */
 extern const struct file_operations jffs2_dir_operations;
-extern struct inode_operations jffs2_dir_inode_operations;
+extern const struct inode_operations jffs2_dir_inode_operations;
 
 /* file.c */
 extern const struct file_operations jffs2_file_operations;
-extern struct inode_operations jffs2_file_inode_operations;
+extern const struct inode_operations jffs2_file_inode_operations;
 extern const struct address_space_operations jffs2_file_address_operations;
 int jffs2_fsync(struct file *, struct dentry *, int);
 int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
@@ -166,7 +166,7 @@ int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
 int jffs2_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
 
 /* symlink.c */
-extern struct inode_operations jffs2_symlink_inode_operations;
+extern const struct inode_operations jffs2_symlink_inode_operations;
 
 /* fs.c */
 int jffs2_setattr (struct dentry *, struct iattr *);
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 08a0e6c..cc7e8e7 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -66,7 +66,7 @@ static int jffs2_sync_fs(struct super_block *sb, int wait)
 	return 0;
 }
 
-static struct super_operations jffs2_super_operations =
+static const struct super_operations jffs2_super_operations =
 {
 	.alloc_inode =	jffs2_alloc_inode,
 	.destroy_inode =jffs2_destroy_inode,
diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c
index b90d5aa..7e4882c 100644
--- a/fs/jffs2/symlink.c
+++ b/fs/jffs2/symlink.c
@@ -20,7 +20,7 @@
 
 static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd);
 
-struct inode_operations jffs2_symlink_inode_operations =
+const struct inode_operations jffs2_symlink_inode_operations =
 {
 	.readlink =	generic_readlink,
 	.follow_link =	jffs2_follow_link,
diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index aa9132d..f7f8eff 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -88,7 +88,7 @@ static int jfs_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-struct inode_operations jfs_file_inode_operations = {
+const struct inode_operations jfs_file_inode_operations = {
 	.truncate	= jfs_truncate,
 	.setxattr	= jfs_setxattr,
 	.getxattr	= jfs_getxattr,
diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index f571911..e285022 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -182,9 +182,9 @@ int jfs_get_block(struct inode *ip, sector_t lblock,
 	 * Take appropriate lock on inode
 	 */
 	if (create)
-		IWRITE_LOCK(ip);
+		IWRITE_LOCK(ip, RDWRLOCK_NORMAL);
 	else
-		IREAD_LOCK(ip);
+		IREAD_LOCK(ip, RDWRLOCK_NORMAL);
 
 	if (((lblock64 << ip->i_sb->s_blocksize_bits) < ip->i_size) &&
 	    (!xtLookup(ip, lblock64, xlen, &xflag, &xaddr, &xlen, 0)) &&
@@ -359,7 +359,7 @@ void jfs_truncate(struct inode *ip)
 
 	nobh_truncate_page(ip->i_mapping, ip->i_size);
 
-	IWRITE_LOCK(ip);
+	IWRITE_LOCK(ip, RDWRLOCK_NORMAL);
 	jfs_truncate_nolock(ip, ip->i_size);
 	IWRITE_UNLOCK(ip);
 }
diff --git a/fs/jfs/jfs_debug.h b/fs/jfs/jfs_debug.h
index ddffbbd..7378798 100644
--- a/fs/jfs/jfs_debug.h
+++ b/fs/jfs/jfs_debug.h
@@ -39,10 +39,6 @@ extern void jfs_proc_clean(void);
 /*
  *	assert with traditional printf/panic
  */
-#ifdef CONFIG_KERNEL_ASSERTS
-/* kgdb stuff */
-#define assert(p) KERNEL_ASSERT(#p, p)
-#else
 #define assert(p) do {	\
 	if (!(p)) {	\
 		printk(KERN_CRIT "BUG at %s:%d assert(%s)\n",	\
@@ -50,7 +46,6 @@ extern void jfs_proc_clean(void);
 		BUG();	\
 	}		\
 } while (0)
-#endif
 
 /*
  *	debug ON
diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c
index 23546c8..82b0544 100644
--- a/fs/jfs/jfs_dmap.c
+++ b/fs/jfs/jfs_dmap.c
@@ -337,7 +337,7 @@ int dbFree(struct inode *ip, s64 blkno, s64 nblocks)
 	struct inode *ipbmap = JFS_SBI(ip->i_sb)->ipbmap;
 	struct bmap *bmp = JFS_SBI(ip->i_sb)->bmap;
 
-	IREAD_LOCK(ipbmap);
+	IREAD_LOCK(ipbmap, RDWRLOCK_DMAP);
 
 	/* block to be freed better be within the mapsize. */
 	if (unlikely((blkno == 0) || (blkno + nblocks > bmp->db_mapsize))) {
@@ -733,7 +733,7 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
 	 * allocation group size, try to allocate anywhere.
 	 */
 	if (l2nb > bmp->db_agl2size) {
-		IWRITE_LOCK(ipbmap);
+		IWRITE_LOCK(ipbmap, RDWRLOCK_DMAP);
 
 		rc = dbAllocAny(bmp, nblocks, l2nb, results);
 
@@ -774,7 +774,7 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
 	 * the hint using a tiered strategy.
 	 */
 	if (nblocks <= BPERDMAP) {
-		IREAD_LOCK(ipbmap);
+		IREAD_LOCK(ipbmap, RDWRLOCK_DMAP);
 
 		/* get the buffer for the dmap containing the hint.
 		 */
@@ -844,7 +844,7 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
 	/* try to satisfy the allocation request with blocks within
 	 * the same allocation group as the hint.
 	 */
-	IWRITE_LOCK(ipbmap);
+	IWRITE_LOCK(ipbmap, RDWRLOCK_DMAP);
 	if ((rc = dbAllocAG(bmp, agno, nblocks, l2nb, results)) != -ENOSPC)
 		goto write_unlock;
 
@@ -856,7 +856,7 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
 	 * Let dbNextAG recommend a preferred allocation group
 	 */
 	agno = dbNextAG(ipbmap);
-	IWRITE_LOCK(ipbmap);
+	IWRITE_LOCK(ipbmap, RDWRLOCK_DMAP);
 
 	/* Try to allocate within this allocation group.  if that fails, try to
 	 * allocate anywhere in the map.
@@ -900,7 +900,7 @@ int dbAllocExact(struct inode *ip, s64 blkno, int nblocks)
 	s64 lblkno;
 	struct metapage *mp;
 
-	IREAD_LOCK(ipbmap);
+	IREAD_LOCK(ipbmap, RDWRLOCK_DMAP);
 
 	/*
 	 * validate extent request:
@@ -1050,7 +1050,7 @@ static int dbExtend(struct inode *ip, s64 blkno, s64 nblocks, s64 addnblocks)
 	 */
 	extblkno = lastblkno + 1;
 
-	IREAD_LOCK(ipbmap);
+	IREAD_LOCK(ipbmap, RDWRLOCK_DMAP);
 
 	/* better be within the file system */
 	bmp = sbi->bmap;
@@ -3116,7 +3116,7 @@ int dbAllocBottomUp(struct inode *ip, s64 blkno, s64 nblocks)
 	struct inode *ipbmap = JFS_SBI(ip->i_sb)->ipbmap;
 	struct bmap *bmp = JFS_SBI(ip->i_sb)->bmap;
 
-	IREAD_LOCK(ipbmap);
+	IREAD_LOCK(ipbmap, RDWRLOCK_DMAP);
 
 	/* block to be allocated better be within the mapsize. */
 	ASSERT(nblocks <= bmp->db_mapsize - blkno);
diff --git a/fs/jfs/jfs_imap.c b/fs/jfs/jfs_imap.c
index 53f63b4..aa5124b 100644
--- a/fs/jfs/jfs_imap.c
+++ b/fs/jfs/jfs_imap.c
@@ -331,7 +331,7 @@ int diRead(struct inode *ip)
 
 	/* read the iag */
 	imap = JFS_IP(ipimap)->i_imap;
-	IREAD_LOCK(ipimap);
+	IREAD_LOCK(ipimap, RDWRLOCK_IMAP);
 	rc = diIAGRead(imap, iagno, &mp);
 	IREAD_UNLOCK(ipimap);
 	if (rc) {
@@ -920,7 +920,7 @@ int diFree(struct inode *ip)
 	/* Obtain read lock in imap inode.  Don't release it until we have
 	 * read all of the IAG's that we are going to.
 	 */
-	IREAD_LOCK(ipimap);
+	IREAD_LOCK(ipimap, RDWRLOCK_IMAP);
 
 	/* read the iag.
 	 */
@@ -1415,7 +1415,7 @@ int diAlloc(struct inode *pip, bool dir, struct inode *ip)
 	AG_LOCK(imap, agno);
 
 	/* Get read lock on imap inode */
-	IREAD_LOCK(ipimap);
+	IREAD_LOCK(ipimap, RDWRLOCK_IMAP);
 
 	/* get the iag number and read the iag */
 	iagno = INOTOIAG(inum);
@@ -1808,7 +1808,7 @@ static int diAllocIno(struct inomap * imap, int agno, struct inode *ip)
 		return -ENOSPC;
 
 	/* obtain read lock on imap inode */
-	IREAD_LOCK(imap->im_ipimap);
+	IREAD_LOCK(imap->im_ipimap, RDWRLOCK_IMAP);
 
 	/* read the iag at the head of the list.
 	 */
@@ -1946,7 +1946,7 @@ static int diAllocExt(struct inomap * imap, int agno, struct inode *ip)
 	} else {
 		/* read the iag.
 		 */
-		IREAD_LOCK(imap->im_ipimap);
+		IREAD_LOCK(imap->im_ipimap, RDWRLOCK_IMAP);
 		if ((rc = diIAGRead(imap, iagno, &mp))) {
 			IREAD_UNLOCK(imap->im_ipimap);
 			jfs_error(ip->i_sb, "diAllocExt: error reading iag");
@@ -2509,7 +2509,7 @@ diNewIAG(struct inomap * imap, int *iagnop, int agno, struct metapage ** mpp)
 		 */
 
 		/* acquire inode map lock */
-		IWRITE_LOCK(ipimap);
+		IWRITE_LOCK(ipimap, RDWRLOCK_IMAP);
 
 		if (ipimap->i_size >> L2PSIZE != imap->im_nextiag + 1) {
 			IWRITE_UNLOCK(ipimap);
@@ -2648,7 +2648,7 @@ diNewIAG(struct inomap * imap, int *iagnop, int agno, struct metapage ** mpp)
 	}
 
 	/* obtain read lock on map */
-	IREAD_LOCK(ipimap);
+	IREAD_LOCK(ipimap, RDWRLOCK_IMAP);
 
 	/* read the iag */
 	if ((rc = diIAGRead(imap, iagno, &mp))) {
@@ -2779,7 +2779,7 @@ diUpdatePMap(struct inode *ipimap,
 		return -EIO;
 	}
 	/* read the iag */
-	IREAD_LOCK(ipimap);
+	IREAD_LOCK(ipimap, RDWRLOCK_IMAP);
 	rc = diIAGRead(imap, iagno, &mp);
 	IREAD_UNLOCK(ipimap);
 	if (rc)
diff --git a/fs/jfs/jfs_incore.h b/fs/jfs/jfs_incore.h
index 9400558..8f453ef 100644
--- a/fs/jfs/jfs_incore.h
+++ b/fs/jfs/jfs_incore.h
@@ -109,9 +109,11 @@ struct jfs_inode_info {
 
 #define JFS_ACL_NOT_CACHED ((void *)-1)
 
-#define IREAD_LOCK(ip)		down_read(&JFS_IP(ip)->rdwrlock)
+#define IREAD_LOCK(ip, subclass) \
+	down_read_nested(&JFS_IP(ip)->rdwrlock, subclass)
 #define IREAD_UNLOCK(ip)	up_read(&JFS_IP(ip)->rdwrlock)
-#define IWRITE_LOCK(ip)		down_write(&JFS_IP(ip)->rdwrlock)
+#define IWRITE_LOCK(ip, subclass) \
+	down_write_nested(&JFS_IP(ip)->rdwrlock, subclass)
 #define IWRITE_UNLOCK(ip)	up_write(&JFS_IP(ip)->rdwrlock)
 
 /*
@@ -127,6 +129,29 @@ enum cflags {
 	COMMIT_Synclist,	/* metadata pages on group commit synclist */
 };
 
+/*
+ * commit_mutex nesting subclasses:
+ */
+enum commit_mutex_class
+{
+	COMMIT_MUTEX_PARENT,
+	COMMIT_MUTEX_CHILD,
+	COMMIT_MUTEX_SECOND_PARENT,	/* Renaming */
+	COMMIT_MUTEX_VICTIM		/* Inode being unlinked due to rename */
+};
+
+/*
+ * rdwrlock subclasses:
+ * The dmap inode may be locked while a normal inode or the imap inode are
+ * locked.
+ */
+enum rdwrlock_class
+{
+	RDWRLOCK_NORMAL,
+	RDWRLOCK_IMAP,
+	RDWRLOCK_DMAP
+};
+
 #define set_cflag(flag, ip)	set_bit(flag, &(JFS_IP(ip)->cflag))
 #define clear_cflag(flag, ip)	clear_bit(flag, &(JFS_IP(ip)->cflag))
 #define test_cflag(flag, ip)	test_bit(flag, &(JFS_IP(ip)->cflag))
diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h
index 0d06ccf..6802837 100644
--- a/fs/jfs/jfs_inode.h
+++ b/fs/jfs/jfs_inode.h
@@ -35,10 +35,10 @@ extern void jfs_set_inode_flags(struct inode *);
 extern int jfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
 
 extern const struct address_space_operations jfs_aops;
-extern struct inode_operations jfs_dir_inode_operations;
+extern const struct inode_operations jfs_dir_inode_operations;
 extern const struct file_operations jfs_dir_operations;
-extern struct inode_operations jfs_file_inode_operations;
+extern const struct inode_operations jfs_file_inode_operations;
 extern const struct file_operations jfs_file_operations;
-extern struct inode_operations jfs_symlink_inode_operations;
+extern const struct inode_operations jfs_symlink_inode_operations;
 extern struct dentry_operations jfs_ci_dentry_operations;
 #endif				/* _H_JFS_INODE */
diff --git a/fs/jfs/jfs_lock.h b/fs/jfs/jfs_lock.h
index 7d78e83..df48ece 100644
--- a/fs/jfs/jfs_lock.h
+++ b/fs/jfs/jfs_lock.h
@@ -42,7 +42,7 @@ do {							\
 		if (cond)				\
 			break;				\
 		unlock_cmd;				\
-		schedule();				\
+		io_schedule();				\
 		lock_cmd;				\
 	}						\
 	current->state = TASK_RUNNING;			\
diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c
index ceaf03b..58deae0 100644
--- a/fs/jfs/jfs_metapage.c
+++ b/fs/jfs/jfs_metapage.c
@@ -56,7 +56,7 @@ static inline void __lock_metapage(struct metapage *mp)
 		set_current_state(TASK_UNINTERRUPTIBLE);
 		if (metapage_locked(mp)) {
 			unlock_page(mp->page);
-			schedule();
+			io_schedule();
 			lock_page(mp->page);
 		}
 	} while (trylock_metapage(mp));
diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c
index d558e51..6988a10 100644
--- a/fs/jfs/jfs_txnmgr.c
+++ b/fs/jfs/jfs_txnmgr.c
@@ -135,7 +135,7 @@ static inline void TXN_SLEEP_DROP_LOCK(wait_queue_head_t * event)
 	add_wait_queue(event, &wait);
 	set_current_state(TASK_UNINTERRUPTIBLE);
 	TXN_UNLOCK();
-	schedule();
+	io_schedule();
 	current->state = TASK_RUNNING;
 	remove_wait_queue(event, &wait);
 }
diff --git a/fs/jfs/jfs_xtree.c b/fs/jfs/jfs_xtree.c
index e98eb03..acc97c4 100644
--- a/fs/jfs/jfs_xtree.c
+++ b/fs/jfs/jfs_xtree.c
@@ -757,6 +757,11 @@ static int xtSearch(struct inode *ip, s64 xoff,	s64 *nextp,
 			nsplit = 0;
 
 		/* push (bn, index) of the parent page/entry */
+		if (BT_STACK_FULL(btstack)) {
+			jfs_error(ip->i_sb, "stack overrun in xtSearch!");
+			XT_PUTPAGE(mp);
+			return -EIO;
+		}
 		BT_PUSH(btstack, bn, index);
 
 		/* get the child page block number */
@@ -3915,6 +3920,11 @@ s64 xtTruncate(tid_t tid, struct inode *ip, s64 newsize, int flag)
 	 */
       getChild:
 	/* save current parent entry for the child page */
+	if (BT_STACK_FULL(&btstack)) {
+		jfs_error(ip->i_sb, "stack overrun in xtTruncate!");
+		XT_PUTPAGE(mp);
+		return -EIO;
+	}
 	BT_PUSH(&btstack, bn, index);
 
 	/* get child page */
@@ -4112,6 +4122,11 @@ s64 xtTruncate_pmap(tid_t tid, struct inode *ip, s64 committed_size)
 	 */
       getChild:
 	/* save current parent entry for the child page */
+	if (BT_STACK_FULL(&btstack)) {
+		jfs_error(ip->i_sb, "stack overrun in xtTruncate_pmap!");
+		XT_PUTPAGE(mp);
+		return -EIO;
+	}
 	BT_PUSH(&btstack, bn, index);
 
 	/* get child page */
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index a6a8c16..41c2047 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -104,8 +104,8 @@ static int jfs_create(struct inode *dip, struct dentry *dentry, int mode,
 
 	tid = txBegin(dip->i_sb, 0);
 
-	mutex_lock(&JFS_IP(dip)->commit_mutex);
-	mutex_lock(&JFS_IP(ip)->commit_mutex);
+	mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT);
+	mutex_lock_nested(&JFS_IP(ip)->commit_mutex, COMMIT_MUTEX_CHILD);
 
 	rc = jfs_init_acl(tid, ip, dip);
 	if (rc)
@@ -238,8 +238,8 @@ static int jfs_mkdir(struct inode *dip, struct dentry *dentry, int mode)
 
 	tid = txBegin(dip->i_sb, 0);
 
-	mutex_lock(&JFS_IP(dip)->commit_mutex);
-	mutex_lock(&JFS_IP(ip)->commit_mutex);
+	mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT);
+	mutex_lock_nested(&JFS_IP(ip)->commit_mutex, COMMIT_MUTEX_CHILD);
 
 	rc = jfs_init_acl(tid, ip, dip);
 	if (rc)
@@ -365,8 +365,8 @@ static int jfs_rmdir(struct inode *dip, struct dentry *dentry)
 
 	tid = txBegin(dip->i_sb, 0);
 
-	mutex_lock(&JFS_IP(dip)->commit_mutex);
-	mutex_lock(&JFS_IP(ip)->commit_mutex);
+	mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT);
+	mutex_lock_nested(&JFS_IP(ip)->commit_mutex, COMMIT_MUTEX_CHILD);
 
 	iplist[0] = dip;
 	iplist[1] = ip;
@@ -483,12 +483,12 @@ static int jfs_unlink(struct inode *dip, struct dentry *dentry)
 	if ((rc = get_UCSname(&dname, dentry)))
 		goto out;
 
-	IWRITE_LOCK(ip);
+	IWRITE_LOCK(ip, RDWRLOCK_NORMAL);
 
 	tid = txBegin(dip->i_sb, 0);
 
-	mutex_lock(&JFS_IP(dip)->commit_mutex);
-	mutex_lock(&JFS_IP(ip)->commit_mutex);
+	mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT);
+	mutex_lock_nested(&JFS_IP(ip)->commit_mutex, COMMIT_MUTEX_CHILD);
 
 	iplist[0] = dip;
 	iplist[1] = ip;
@@ -802,8 +802,8 @@ static int jfs_link(struct dentry *old_dentry,
 
 	tid = txBegin(ip->i_sb, 0);
 
-	mutex_lock(&JFS_IP(dir)->commit_mutex);
-	mutex_lock(&JFS_IP(ip)->commit_mutex);
+	mutex_lock_nested(&JFS_IP(dir)->commit_mutex, COMMIT_MUTEX_PARENT);
+	mutex_lock_nested(&JFS_IP(ip)->commit_mutex, COMMIT_MUTEX_CHILD);
 
 	/*
 	 * scan parent directory for entry/freespace
@@ -913,8 +913,8 @@ static int jfs_symlink(struct inode *dip, struct dentry *dentry,
 
 	tid = txBegin(dip->i_sb, 0);
 
-	mutex_lock(&JFS_IP(dip)->commit_mutex);
-	mutex_lock(&JFS_IP(ip)->commit_mutex);
+	mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT);
+	mutex_lock_nested(&JFS_IP(ip)->commit_mutex, COMMIT_MUTEX_CHILD);
 
 	rc = jfs_init_security(tid, ip, dip);
 	if (rc)
@@ -1127,7 +1127,7 @@ static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 			goto out3;
 		}
 	} else if (new_ip) {
-		IWRITE_LOCK(new_ip);
+		IWRITE_LOCK(new_ip, RDWRLOCK_NORMAL);
 		/* Init inode for quota operations. */
 		DQUOT_INIT(new_ip);
 	}
@@ -1137,13 +1137,21 @@ static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 	 */
 	tid = txBegin(new_dir->i_sb, 0);
 
-	mutex_lock(&JFS_IP(new_dir)->commit_mutex);
-	mutex_lock(&JFS_IP(old_ip)->commit_mutex);
+	/*
+	 * How do we know the locking is safe from deadlocks?
+	 * The vfs does the hard part for us.  Any time we are taking nested
+	 * commit_mutexes, the vfs already has i_mutex held on the parent.
+	 * Here, the vfs has already taken i_mutex on both old_dir and new_dir.
+	 */
+	mutex_lock_nested(&JFS_IP(new_dir)->commit_mutex, COMMIT_MUTEX_PARENT);
+	mutex_lock_nested(&JFS_IP(old_ip)->commit_mutex, COMMIT_MUTEX_CHILD);
 	if (old_dir != new_dir)
-		mutex_lock(&JFS_IP(old_dir)->commit_mutex);
+		mutex_lock_nested(&JFS_IP(old_dir)->commit_mutex,
+				  COMMIT_MUTEX_SECOND_PARENT);
 
 	if (new_ip) {
-		mutex_lock(&JFS_IP(new_ip)->commit_mutex);
+		mutex_lock_nested(&JFS_IP(new_ip)->commit_mutex,
+				  COMMIT_MUTEX_VICTIM);
 		/*
 		 * Change existing directory entry to new inode number
 		 */
@@ -1357,8 +1365,8 @@ static int jfs_mknod(struct inode *dir, struct dentry *dentry,
 
 	tid = txBegin(dir->i_sb, 0);
 
-	mutex_lock(&JFS_IP(dir)->commit_mutex);
-	mutex_lock(&JFS_IP(ip)->commit_mutex);
+	mutex_lock_nested(&JFS_IP(dir)->commit_mutex, COMMIT_MUTEX_PARENT);
+	mutex_lock_nested(&JFS_IP(ip)->commit_mutex, COMMIT_MUTEX_CHILD);
 
 	rc = jfs_init_acl(tid, ip, dir);
 	if (rc)
@@ -1495,7 +1503,7 @@ struct dentry *jfs_get_parent(struct dentry *dentry)
 	return parent;
 }
 
-struct inode_operations jfs_dir_inode_operations = {
+const struct inode_operations jfs_dir_inode_operations = {
 	.create		= jfs_create,
 	.lookup		= jfs_lookup,
 	.link		= jfs_link,
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 846ac8f..52d73d5 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -46,7 +46,7 @@ MODULE_LICENSE("GPL");
 
 static struct kmem_cache * jfs_inode_cachep;
 
-static struct super_operations jfs_super_operations;
+static const struct super_operations jfs_super_operations;
 static struct export_operations jfs_export_operations;
 static struct file_system_type jfs_fs_type;
 
@@ -716,7 +716,7 @@ out:
 
 #endif
 
-static struct super_operations jfs_super_operations = {
+static const struct super_operations jfs_super_operations = {
 	.alloc_inode	= jfs_alloc_inode,
 	.destroy_inode	= jfs_destroy_inode,
 	.read_inode	= jfs_read_inode,
diff --git a/fs/jfs/symlink.c b/fs/jfs/symlink.c
index cee43f3..4af1a05 100644
--- a/fs/jfs/symlink.c
+++ b/fs/jfs/symlink.c
@@ -29,7 +29,7 @@ static void *jfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return NULL;
 }
 
-struct inode_operations jfs_symlink_inode_operations = {
+const struct inode_operations jfs_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= jfs_follow_link,
 	.setxattr	= jfs_setxattr,
diff --git a/fs/libfs.c b/fs/libfs.c
index 503898d..7d48704 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -186,7 +186,7 @@ const struct file_operations simple_dir_operations = {
 	.fsync		= simple_sync_file,
 };
 
-struct inode_operations simple_dir_inode_operations = {
+const struct inode_operations simple_dir_inode_operations = {
 	.lookup		= simple_lookup,
 };
 
@@ -195,11 +195,11 @@ struct inode_operations simple_dir_inode_operations = {
  * will never be mountable)
  */
 int get_sb_pseudo(struct file_system_type *fs_type, char *name,
-	struct super_operations *ops, unsigned long magic,
+	const struct super_operations *ops, unsigned long magic,
 	struct vfsmount *mnt)
 {
 	struct super_block *s = sget(fs_type, NULL, set_anon_super, NULL);
-	static struct super_operations default_ops = {.statfs = simple_statfs};
+	static const struct super_operations default_ops = {.statfs = simple_statfs};
 	struct dentry *dentry;
 	struct inode *root;
 	struct qstr d_name = {.name = name, .len = strlen(name)};
diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index 3d4610c..22d4032 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -192,7 +192,7 @@ struct nlm_host *
 nlmsvc_lookup_host(struct svc_rqst *rqstp,
 			const char *hostname, int hostname_len)
 {
-	return nlm_lookup_host(1, &rqstp->rq_addr,
+	return nlm_lookup_host(1, svc_addr_in(rqstp),
 			       rqstp->rq_prot, rqstp->rq_vers,
 			       hostname, hostname_len);
 }
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 8ca1808..80fcacc 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -141,6 +141,7 @@ lockd(struct svc_rqst *rqstp)
 	 */
 	while ((nlmsvc_users || !signalled()) && nlmsvc_pid == current->pid) {
 		long timeout = MAX_SCHEDULE_TIMEOUT;
+		char buf[RPC_MAX_ADDRBUFLEN];
 
 		if (signalled()) {
 			flush_signals(current);
@@ -175,11 +176,10 @@ lockd(struct svc_rqst *rqstp)
 			break;
 		}
 
-		dprintk("lockd: request from %08x\n",
-			(unsigned)ntohl(rqstp->rq_addr.sin_addr.s_addr));
+		dprintk("lockd: request from %s\n",
+				svc_print_addr(rqstp, buf, sizeof(buf)));
 
 		svc_process(rqstp);
-
 	}
 
 	flush_signals(current);
@@ -223,23 +223,29 @@ static int find_socket(struct svc_serv *serv, int proto)
 	return found;
 }
 
+/*
+ * Make any sockets that are needed but not present.
+ * If nlm_udpport or nlm_tcpport were set as module
+ * options, make those sockets unconditionally
+ */
 static int make_socks(struct svc_serv *serv, int proto)
 {
-	/* Make any sockets that are needed but not present.
-	 * If nlm_udpport or nlm_tcpport were set as module
-	 * options, make those sockets unconditionally
-	 */
-	static int		warned;
+	static int warned;
 	int err = 0;
+
 	if (proto == IPPROTO_UDP || nlm_udpport)
 		if (!find_socket(serv, IPPROTO_UDP))
-			err = svc_makesock(serv, IPPROTO_UDP, nlm_udpport);
-	if (err == 0 && (proto == IPPROTO_TCP || nlm_tcpport))
+			err = svc_makesock(serv, IPPROTO_UDP, nlm_udpport,
+						SVC_SOCK_DEFAULTS);
+	if (err >= 0 && (proto == IPPROTO_TCP || nlm_tcpport))
 		if (!find_socket(serv, IPPROTO_TCP))
-			err= svc_makesock(serv, IPPROTO_TCP, nlm_tcpport);
-	if (!err)
+			err = svc_makesock(serv, IPPROTO_TCP, nlm_tcpport,
+						SVC_SOCK_DEFAULTS);
+
+	if (err >= 0) {
 		warned = 0;
-	else if (warned++ == 0)
+		err = 0;
+	} else if (warned++ == 0)
 		printk(KERN_WARNING
 		       "lockd_up: makesock failed, error=%d\n", err);
 	return err;
diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index f67146a..47a66aa 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -224,7 +224,7 @@ nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	dprintk("lockd: GRANTED       called\n");
-	resp->status = nlmclnt_grant(&rqstp->rq_addr, &argp->lock);
+	resp->status = nlmclnt_grant(svc_addr_in(rqstp), &argp->lock);
 	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
 	return rpc_success;
 }
@@ -421,15 +421,16 @@ static __be32
 nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
 					      void	        *resp)
 {
-	struct sockaddr_in	saddr = rqstp->rq_addr;
+	struct sockaddr_in	saddr;
+
+	memcpy(&saddr, svc_addr_in(rqstp), sizeof(saddr));
 
 	dprintk("lockd: SM_NOTIFY     called\n");
 	if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)
 	 || ntohs(saddr.sin_port) >= 1024) {
-		printk(KERN_WARNING
-			"lockd: rejected NSM callback from %08x:%d\n",
-			ntohl(rqstp->rq_addr.sin_addr.s_addr),
-			ntohs(rqstp->rq_addr.sin_port));
+		char buf[RPC_MAX_ADDRBUFLEN];
+		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
+				svc_print_addr(rqstp, buf, sizeof(buf)));
 		return rpc_system_err;
 	}
 
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index 3707c3a..31cb484 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -253,7 +253,7 @@ nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	dprintk("lockd: GRANTED       called\n");
-	resp->status = nlmclnt_grant(&rqstp->rq_addr, &argp->lock);
+	resp->status = nlmclnt_grant(svc_addr_in(rqstp), &argp->lock);
 	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
 	return rpc_success;
 }
@@ -452,15 +452,16 @@ static __be32
 nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
 					      void	        *resp)
 {
-	struct sockaddr_in	saddr = rqstp->rq_addr;
+	struct sockaddr_in	saddr;
+
+	memcpy(&saddr, svc_addr_in(rqstp), sizeof(saddr));
 
 	dprintk("lockd: SM_NOTIFY     called\n");
 	if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)
 	 || ntohs(saddr.sin_port) >= 1024) {
-		printk(KERN_WARNING
-			"lockd: rejected NSM callback from %08x:%d\n",
-			ntohl(rqstp->rq_addr.sin_addr.s_addr),
-			ntohs(rqstp->rq_addr.sin_port));
+		char buf[RPC_MAX_ADDRBUFLEN];
+		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
+				svc_print_addr(rqstp, buf, sizeof(buf)));
 		return rpc_system_err;
 	}
 
diff --git a/fs/minix/bitmap.c b/fs/minix/bitmap.c
index df6b107..c4a554d 100644
--- a/fs/minix/bitmap.c
+++ b/fs/minix/bitmap.c
@@ -26,14 +26,14 @@ static unsigned long count_free(struct buffer_head *map[], unsigned numblocks, _
 	for (i=0; i<numblocks-1; i++) {
 		if (!(bh=map[i])) 
 			return(0);
-		for (j=0; j<BLOCK_SIZE; j++)
+		for (j=0; j<bh->b_size; j++)
 			sum += nibblemap[bh->b_data[j] & 0xf]
 				+ nibblemap[(bh->b_data[j]>>4) & 0xf];
 	}
 
 	if (numblocks==0 || !(bh=map[numblocks-1]))
 		return(0);
-	i = ((numbits-(numblocks-1)*BLOCK_SIZE*8)/16)*2;
+	i = ((numbits - (numblocks-1) * bh->b_size * 8) / 16) * 2;
 	for (j=0; j<i; j++) {
 		sum += nibblemap[bh->b_data[j] & 0xf]
 			+ nibblemap[(bh->b_data[j]>>4) & 0xf];
@@ -48,28 +48,29 @@ static unsigned long count_free(struct buffer_head *map[], unsigned numblocks, _
 	return(sum);
 }
 
-void minix_free_block(struct inode * inode, int block)
+void minix_free_block(struct inode *inode, unsigned long block)
 {
-	struct super_block * sb = inode->i_sb;
-	struct minix_sb_info * sbi = minix_sb(sb);
-	struct buffer_head * bh;
-	unsigned int bit,zone;
+	struct super_block *sb = inode->i_sb;
+	struct minix_sb_info *sbi = minix_sb(sb);
+	struct buffer_head *bh;
+	int k = sb->s_blocksize_bits + 3;
+	unsigned long bit, zone;
 
 	if (block < sbi->s_firstdatazone || block >= sbi->s_nzones) {
 		printk("Trying to free block not in datazone\n");
 		return;
 	}
 	zone = block - sbi->s_firstdatazone + 1;
-	bit = zone & 8191;
-	zone >>= 13;
+	bit = zone & ((1<<k) - 1);
+	zone >>= k;
 	if (zone >= sbi->s_zmap_blocks) {
 		printk("minix_free_block: nonexistent bitmap buffer\n");
 		return;
 	}
 	bh = sbi->s_zmap[zone];
 	lock_kernel();
-	if (!minix_test_and_clear_bit(bit,bh->b_data))
-		printk("free_block (%s:%d): bit already cleared\n",
+	if (!minix_test_and_clear_bit(bit, bh->b_data))
+		printk("minix_free_block (%s:%lu): bit already cleared\n",
 		       sb->s_id, block);
 	unlock_kernel();
 	mark_buffer_dirty(bh);
@@ -79,6 +80,7 @@ void minix_free_block(struct inode * inode, int block)
 int minix_new_block(struct inode * inode)
 {
 	struct minix_sb_info *sbi = minix_sb(inode->i_sb);
+	int bits_per_zone = 8 * inode->i_sb->s_blocksize;
 	int i;
 
 	for (i = 0; i < sbi->s_zmap_blocks; i++) {
@@ -86,11 +88,12 @@ int minix_new_block(struct inode * inode)
 		int j;
 
 		lock_kernel();
-		if ((j = minix_find_first_zero_bit(bh->b_data, 8192)) < 8192) {
-			minix_set_bit(j,bh->b_data);
+		j = minix_find_first_zero_bit(bh->b_data, bits_per_zone);
+		if (j < bits_per_zone) {
+			minix_set_bit(j, bh->b_data);
 			unlock_kernel();
 			mark_buffer_dirty(bh);
-			j += i*8192 + sbi->s_firstdatazone-1;
+			j += i * bits_per_zone + sbi->s_firstdatazone-1;
 			if (j < sbi->s_firstdatazone || j >= sbi->s_nzones)
 				break;
 			return j;
@@ -137,6 +140,7 @@ minix_V2_raw_inode(struct super_block *sb, ino_t ino, struct buffer_head **bh)
 	int block;
 	struct minix_sb_info *sbi = minix_sb(sb);
 	struct minix2_inode *p;
+	int minix2_inodes_per_block = sb->s_blocksize / sizeof(struct minix2_inode);
 
 	*bh = NULL;
 	if (!ino || ino > sbi->s_ninodes) {
@@ -146,14 +150,14 @@ minix_V2_raw_inode(struct super_block *sb, ino_t ino, struct buffer_head **bh)
 	}
 	ino--;
 	block = 2 + sbi->s_imap_blocks + sbi->s_zmap_blocks +
-		 ino / MINIX2_INODES_PER_BLOCK;
+		 ino / minix2_inodes_per_block;
 	*bh = sb_bread(sb, block);
 	if (!*bh) {
 		printk("Unable to read inode block\n");
 		return NULL;
 	}
 	p = (void *)(*bh)->b_data;
-	return p + ino % MINIX2_INODES_PER_BLOCK;
+	return p + ino % minix2_inodes_per_block;
 }
 
 /* Clear the link count and mode of a deleted inode on disk. */
@@ -185,26 +189,30 @@ static void minix_clear_inode(struct inode *inode)
 
 void minix_free_inode(struct inode * inode)
 {
+	struct super_block *sb = inode->i_sb;
 	struct minix_sb_info *sbi = minix_sb(inode->i_sb);
-	struct buffer_head * bh;
-	unsigned long ino;
+	struct buffer_head *bh;
+	int k = sb->s_blocksize_bits + 3;
+	unsigned long ino, bit;
 
 	ino = inode->i_ino;
 	if (ino < 1 || ino > sbi->s_ninodes) {
 		printk("minix_free_inode: inode 0 or nonexistent inode\n");
 		goto out;
 	}
-	if ((ino >> 13) >= sbi->s_imap_blocks) {
+	bit = ino & ((1<<k) - 1);
+	ino >>= k;
+	if (ino >= sbi->s_imap_blocks) {
 		printk("minix_free_inode: nonexistent imap in superblock\n");
 		goto out;
 	}
 
 	minix_clear_inode(inode);	/* clear on-disk copy */
 
-	bh = sbi->s_imap[ino >> 13];
+	bh = sbi->s_imap[ino];
 	lock_kernel();
-	if (!minix_test_and_clear_bit(ino & 8191, bh->b_data))
-		printk("minix_free_inode: bit %lu already cleared\n", ino);
+	if (!minix_test_and_clear_bit(bit, bh->b_data))
+		printk("minix_free_inode: bit %lu already cleared\n", bit);
 	unlock_kernel();
 	mark_buffer_dirty(bh);
  out:
@@ -217,35 +225,38 @@ struct inode * minix_new_inode(const struct inode * dir, int * error)
 	struct minix_sb_info *sbi = minix_sb(sb);
 	struct inode *inode = new_inode(sb);
 	struct buffer_head * bh;
-	int i,j;
+	int bits_per_zone = 8 * sb->s_blocksize;
+	unsigned long j;
+	int i;
 
 	if (!inode) {
 		*error = -ENOMEM;
 		return NULL;
 	}
-	j = 8192;
+	j = bits_per_zone;
 	bh = NULL;
 	*error = -ENOSPC;
 	lock_kernel();
 	for (i = 0; i < sbi->s_imap_blocks; i++) {
 		bh = sbi->s_imap[i];
-		if ((j = minix_find_first_zero_bit(bh->b_data, 8192)) < 8192)
+		j = minix_find_first_zero_bit(bh->b_data, bits_per_zone);
+		if (j < bits_per_zone)
 			break;
 	}
-	if (!bh || j >= 8192) {
+	if (!bh || j >= bits_per_zone) {
 		unlock_kernel();
 		iput(inode);
 		return NULL;
 	}
-	if (minix_test_and_set_bit(j,bh->b_data)) {	/* shouldn't happen */
-		printk("new_inode: bit already set\n");
+	if (minix_test_and_set_bit(j, bh->b_data)) {	/* shouldn't happen */
 		unlock_kernel();
+		printk("minix_new_inode: bit already set\n");
 		iput(inode);
 		return NULL;
 	}
 	unlock_kernel();
 	mark_buffer_dirty(bh);
-	j += i*8192;
+	j += i * bits_per_zone;
 	if (!j || j > sbi->s_ninodes) {
 		iput(inode);
 		return NULL;
diff --git a/fs/minix/dir.c b/fs/minix/dir.c
index ab782c4..cb4cb57 100644
--- a/fs/minix/dir.c
+++ b/fs/minix/dir.c
@@ -4,6 +4,8 @@
  *  Copyright (C) 1991, 1992 Linus Torvalds
  *
  *  minix directory handling functions
+ *
+ *  Updated to filesystem version 3 by Daniel Aragones
  */
 
 #include "minix.h"
@@ -11,6 +13,7 @@
 #include <linux/smp_lock.h>
 
 typedef struct minix_dir_entry minix_dirent;
+typedef struct minix3_dir_entry minix3_dirent;
 
 static int minix_readdir(struct file *, void *, filldir_t);
 
@@ -89,6 +92,8 @@ static int minix_readdir(struct file * filp, void * dirent, filldir_t filldir)
 	unsigned long npages = dir_pages(inode);
 	struct minix_sb_info *sbi = minix_sb(sb);
 	unsigned chunk_size = sbi->s_dirsize;
+	char *name;
+	__u32 inumber;
 
 	lock_kernel();
 
@@ -105,16 +110,24 @@ static int minix_readdir(struct file * filp, void * dirent, filldir_t filldir)
 		kaddr = (char *)page_address(page);
 		p = kaddr+offset;
 		limit = kaddr + minix_last_byte(inode, n) - chunk_size;
-		for ( ; p <= limit ; p = minix_next_entry(p, sbi)) {
-			minix_dirent *de = (minix_dirent *)p;
-			if (de->inode) {
+		for ( ; p <= limit; p = minix_next_entry(p, sbi)) {
+			if (sbi->s_version == MINIX_V3) {
+				minix3_dirent *de3 = (minix3_dirent *)p;
+				name = de3->name;
+				inumber = de3->inode;
+	 		} else {
+				minix_dirent *de = (minix_dirent *)p;
+				name = de->name;
+				inumber = de->inode;
+			}
+			if (inumber) {
 				int over;
-				unsigned l = strnlen(de->name,sbi->s_namelen);
 
+				unsigned l = strnlen(name, sbi->s_namelen);
 				offset = p - kaddr;
-				over = filldir(dirent, de->name, l,
-						(n<<PAGE_CACHE_SHIFT) | offset,
-						de->inode, DT_UNKNOWN);
+				over = filldir(dirent, name, l,
+					(n << PAGE_CACHE_SHIFT) | offset,
+					inumber, DT_UNKNOWN);
 				if (over) {
 					dir_put_page(page);
 					goto done;
@@ -156,23 +169,34 @@ minix_dirent *minix_find_entry(struct dentry *dentry, struct page **res_page)
 	unsigned long n;
 	unsigned long npages = dir_pages(dir);
 	struct page *page = NULL;
-	struct minix_dir_entry *de;
+	char *p;
 
+	char *namx;
+	__u32 inumber;
 	*res_page = NULL;
 
 	for (n = 0; n < npages; n++) {
-		char *kaddr;
+		char *kaddr, *limit;
+
 		page = dir_get_page(dir, n);
 		if (IS_ERR(page))
 			continue;
 
 		kaddr = (char*)page_address(page);
-		de = (struct minix_dir_entry *) kaddr;
-		kaddr += minix_last_byte(dir, n) - sbi->s_dirsize;
-		for ( ; (char *) de <= kaddr ; de = minix_next_entry(de,sbi)) {
-			if (!de->inode)
+		limit = kaddr + minix_last_byte(dir, n) - sbi->s_dirsize;
+		for (p = kaddr; p <= limit; p = minix_next_entry(p, sbi)) {
+			if (sbi->s_version == MINIX_V3) {
+				minix3_dirent *de3 = (minix3_dirent *)p;
+				namx = de3->name;
+				inumber = de3->inode;
+ 			} else {
+				minix_dirent *de = (minix_dirent *)p;
+				namx = de->name;
+				inumber = de->inode;
+			}
+			if (!inumber)
 				continue;
-			if (namecompare(namelen,sbi->s_namelen,name,de->name))
+			if (namecompare(namelen, sbi->s_namelen, name, namx))
 				goto found;
 		}
 		dir_put_page(page);
@@ -181,7 +205,7 @@ minix_dirent *minix_find_entry(struct dentry *dentry, struct page **res_page)
 
 found:
 	*res_page = page;
-	return de;
+	return (minix_dirent *)p;
 }
 
 int minix_add_link(struct dentry *dentry, struct inode *inode)
@@ -192,12 +216,15 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
 	struct super_block * sb = dir->i_sb;
 	struct minix_sb_info * sbi = minix_sb(sb);
 	struct page *page = NULL;
-	struct minix_dir_entry * de;
 	unsigned long npages = dir_pages(dir);
 	unsigned long n;
-	char *kaddr;
+	char *kaddr, *p;
+	minix_dirent *de;
+	minix3_dirent *de3;
 	unsigned from, to;
 	int err;
+	char *namx = NULL;
+	__u32 inumber;
 
 	/*
 	 * We take care of directory expansion in the same loop
@@ -205,7 +232,7 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
 	 * to protect that region.
 	 */
 	for (n = 0; n <= npages; n++) {
-		char *dir_end;
+		char *limit, *dir_end;
 
 		page = dir_get_page(dir, n);
 		err = PTR_ERR(page);
@@ -214,20 +241,30 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
 		lock_page(page);
 		kaddr = (char*)page_address(page);
 		dir_end = kaddr + minix_last_byte(dir, n);
-		de = (minix_dirent *)kaddr;
-		kaddr += PAGE_CACHE_SIZE - sbi->s_dirsize;
-		while ((char *)de <= kaddr) {
-			if ((char *)de == dir_end) {
+		limit = kaddr + PAGE_CACHE_SIZE - sbi->s_dirsize;
+		for (p = kaddr; p <= limit; p = minix_next_entry(p, sbi)) {
+			de = (minix_dirent *)p;
+			de3 = (minix3_dirent *)p;
+			if (sbi->s_version == MINIX_V3) {
+				namx = de3->name;
+				inumber = de3->inode;
+		 	} else {
+  				namx = de->name;
+				inumber = de->inode;
+			}
+			if (p == dir_end) {
 				/* We hit i_size */
-				de->inode = 0;
+				if (sbi->s_version == MINIX_V3)
+					de3->inode = 0;
+		 		else
+					de->inode = 0;
 				goto got_it;
 			}
-			if (!de->inode)
+			if (!inumber)
 				goto got_it;
 			err = -EEXIST;
-			if (namecompare(namelen,sbi->s_namelen,name,de->name))
+			if (namecompare(namelen, sbi->s_namelen, name, namx))
 				goto out_unlock;
-			de = minix_next_entry(de, sbi);
 		}
 		unlock_page(page);
 		dir_put_page(page);
@@ -236,14 +273,19 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
 	return -EINVAL;
 
 got_it:
-	from = (char*)de - (char*)page_address(page);
+	from = p - (char*)page_address(page);
 	to = from + sbi->s_dirsize;
 	err = page->mapping->a_ops->prepare_write(NULL, page, from, to);
 	if (err)
 		goto out_unlock;
-	memcpy (de->name, name, namelen);
-	memset (de->name + namelen, 0, sbi->s_dirsize - namelen - 2);
-	de->inode = inode->i_ino;
+	memcpy (namx, name, namelen);
+	if (sbi->s_version == MINIX_V3) {
+		memset (namx + namelen, 0, sbi->s_dirsize - namelen - 4);
+		de3->inode = inode->i_ino;
+	} else {
+		memset (namx + namelen, 0, sbi->s_dirsize - namelen - 2);
+		de->inode = inode->i_ino;
+	}
 	err = dir_commit_chunk(page, from, to);
 	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
 	mark_inode_dirty(dir);
@@ -283,8 +325,7 @@ int minix_make_empty(struct inode *inode, struct inode *dir)
 {
 	struct address_space *mapping = inode->i_mapping;
 	struct page *page = grab_cache_page(mapping, 0);
-	struct minix_sb_info * sbi = minix_sb(inode->i_sb);
-	struct minix_dir_entry * de;
+	struct minix_sb_info *sbi = minix_sb(inode->i_sb);
 	char *kaddr;
 	int err;
 
@@ -299,12 +340,23 @@ int minix_make_empty(struct inode *inode, struct inode *dir)
 	kaddr = kmap_atomic(page, KM_USER0);
 	memset(kaddr, 0, PAGE_CACHE_SIZE);
 
-	de = (struct minix_dir_entry *)kaddr;
-	de->inode = inode->i_ino;
-	strcpy(de->name,".");
-	de = minix_next_entry(de, sbi);
-	de->inode = dir->i_ino;
-	strcpy(de->name,"..");
+	if (sbi->s_version == MINIX_V3) {
+		minix3_dirent *de3 = (minix3_dirent *)kaddr;
+
+		de3->inode = inode->i_ino;
+		strcpy(de3->name, ".");
+		de3 = minix_next_entry(de3, sbi);
+		de3->inode = dir->i_ino;
+		strcpy(de3->name, "..");
+	} else {
+		minix_dirent *de = (minix_dirent *)kaddr;
+
+		de->inode = inode->i_ino;
+		strcpy(de->name, ".");
+		de = minix_next_entry(de, sbi);
+		de->inode = dir->i_ino;
+		strcpy(de->name, "..");
+	}
 	kunmap_atomic(kaddr, KM_USER0);
 
 	err = dir_commit_chunk(page, 0, 2 * sbi->s_dirsize);
@@ -321,33 +373,41 @@ int minix_empty_dir(struct inode * inode)
 	struct page *page = NULL;
 	unsigned long i, npages = dir_pages(inode);
 	struct minix_sb_info *sbi = minix_sb(inode->i_sb);
+	char *name;
+	__u32 inumber;
 
 	for (i = 0; i < npages; i++) {
-		char *kaddr;
-		minix_dirent * de;
-		page = dir_get_page(inode, i);
+		char *p, *kaddr, *limit;
 
+		page = dir_get_page(inode, i);
 		if (IS_ERR(page))
 			continue;
 
 		kaddr = (char *)page_address(page);
-		de = (minix_dirent *)kaddr;
-		kaddr += minix_last_byte(inode, i) - sbi->s_dirsize;
+		limit = kaddr + minix_last_byte(inode, i) - sbi->s_dirsize;
+		for (p = kaddr; p <= limit; p = minix_next_entry(p, sbi)) {
+			if (sbi->s_version == MINIX_V3) {
+				minix3_dirent *de3 = (minix3_dirent *)p;
+				name = de3->name;
+				inumber = de3->inode;
+			} else {
+				minix_dirent *de = (minix_dirent *)p;
+				name = de->name;
+				inumber = de->inode;
+			}
 
-		while ((char *)de <= kaddr) {
-			if (de->inode != 0) {
+			if (inumber != 0) {
 				/* check for . and .. */
-				if (de->name[0] != '.')
+				if (name[0] != '.')
 					goto not_empty;
-				if (!de->name[1]) {
-					if (de->inode != inode->i_ino)
+				if (!name[1]) {
+					if (inumber != inode->i_ino)
 						goto not_empty;
-				} else if (de->name[1] != '.')
+				} else if (name[1] != '.')
 					goto not_empty;
-				else if (de->name[2])
+				else if (name[2])
 					goto not_empty;
 			}
-			de = minix_next_entry(de, sbi);
 		}
 		dir_put_page(page);
 	}
diff --git a/fs/minix/file.c b/fs/minix/file.c
index 40eac2e..f92baa1 100644
--- a/fs/minix/file.c
+++ b/fs/minix/file.c
@@ -26,7 +26,7 @@ const struct file_operations minix_file_operations = {
 	.sendfile	= generic_file_sendfile,
 };
 
-struct inode_operations minix_file_inode_operations = {
+const struct inode_operations minix_file_inode_operations = {
 	.truncate	= minix_truncate,
 	.getattr	= minix_getattr,
 };
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 629e09b..92e383a 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -7,6 +7,7 @@
  *	Minix V2 fs support.
  *
  *  Modified for 680x0 by Andreas Schwab
+ *  Updated to filesystem version 3 by Daniel Aragones
  */
 
 #include <linux/module.h>
@@ -36,7 +37,8 @@ static void minix_put_super(struct super_block *sb)
 	struct minix_sb_info *sbi = minix_sb(sb);
 
 	if (!(sb->s_flags & MS_RDONLY)) {
-		sbi->s_ms->s_state = sbi->s_mount_state;
+		if (sbi->s_version != MINIX_V3)	 /* s_state is now out from V3 sb */
+			sbi->s_ms->s_state = sbi->s_mount_state;
 		mark_buffer_dirty(sbi->s_sbh);
 	}
 	for (i = 0; i < sbi->s_imap_blocks; i++)
@@ -93,7 +95,7 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(minix_inode_cachep);
 }
 
-static struct super_operations minix_sops = {
+static const struct super_operations minix_sops = {
 	.alloc_inode	= minix_alloc_inode,
 	.destroy_inode	= minix_destroy_inode,
 	.read_inode	= minix_read_inode,
@@ -117,12 +119,17 @@ static int minix_remount (struct super_block * sb, int * flags, char * data)
 		    !(sbi->s_mount_state & MINIX_VALID_FS))
 			return 0;
 		/* Mounting a rw partition read-only. */
-		ms->s_state = sbi->s_mount_state;
+		if (sbi->s_version != MINIX_V3)
+			ms->s_state = sbi->s_mount_state;
 		mark_buffer_dirty(sbi->s_sbh);
 	} else {
 	  	/* Mount a partition which is read-only, read-write. */
-		sbi->s_mount_state = ms->s_state;
-		ms->s_state &= ~MINIX_VALID_FS;
+		if (sbi->s_version != MINIX_V3) {
+			sbi->s_mount_state = ms->s_state;
+			ms->s_state &= ~MINIX_VALID_FS;
+		} else {
+			sbi->s_mount_state = MINIX_VALID_FS;
+		}
 		mark_buffer_dirty(sbi->s_sbh);
 
 		if (!(sbi->s_mount_state & MINIX_VALID_FS))
@@ -140,7 +147,8 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
 	struct buffer_head *bh;
 	struct buffer_head **map;
 	struct minix_super_block *ms;
-	int i, block;
+	struct minix3_super_block *m3s = NULL;
+	unsigned long i, block;
 	struct inode *root_inode;
 	struct minix_sb_info *sbi;
 
@@ -192,6 +200,22 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
 		sbi->s_dirsize = 32;
 		sbi->s_namelen = 30;
 		sbi->s_link_max = MINIX2_LINK_MAX;
+	} else if ( *(__u16 *)(bh->b_data + 24) == MINIX3_SUPER_MAGIC) {
+		m3s = (struct minix3_super_block *) bh->b_data;
+		s->s_magic = m3s->s_magic;
+		sbi->s_imap_blocks = m3s->s_imap_blocks;
+		sbi->s_zmap_blocks = m3s->s_zmap_blocks;
+		sbi->s_firstdatazone = m3s->s_firstdatazone;
+		sbi->s_log_zone_size = m3s->s_log_zone_size;
+		sbi->s_max_size = m3s->s_max_size;
+		sbi->s_ninodes = m3s->s_ninodes;
+		sbi->s_nzones = m3s->s_zones;
+		sbi->s_dirsize = 64;
+		sbi->s_namelen = 60;
+		sbi->s_version = MINIX_V3;
+		sbi->s_link_max = MINIX2_LINK_MAX;
+		sbi->s_mount_state = MINIX_VALID_FS;
+		sb_set_blocksize(s, m3s->s_blocksize);
 	} else
 		goto out_no_fs;
 
@@ -236,7 +260,8 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
 		s->s_root->d_op = &minix_dentry_operations;
 
 	if (!(s->s_flags & MS_RDONLY)) {
-		ms->s_state &= ~MINIX_VALID_FS;
+		if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */
+			ms->s_state &= ~MINIX_VALID_FS;
 		mark_buffer_dirty(bh);
 	}
 	if (!(sbi->s_mount_state & MINIX_VALID_FS))
@@ -278,8 +303,8 @@ out_illegal_sb:
 
 out_no_fs:
 	if (!silent)
-		printk("VFS: Can't find a Minix or Minix V2 filesystem "
-			"on device %s\n", s->s_id);
+		printk("VFS: Can't find a Minix filesystem V1 | V2 | V3 "
+		       "on device %s.\n", s->s_id);
 out_release:
 	brelse(bh);
 	goto out;
@@ -344,7 +369,7 @@ static const struct address_space_operations minix_aops = {
 	.bmap = minix_bmap
 };
 
-static struct inode_operations minix_symlink_inode_operations = {
+static const struct inode_operations minix_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
@@ -537,12 +562,14 @@ int minix_sync_inode(struct inode * inode)
 
 int minix_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 {
+	struct inode *dir = dentry->d_parent->d_inode;
+	struct super_block *sb = dir->i_sb;
 	generic_fillattr(dentry->d_inode, stat);
 	if (INODE_VERSION(dentry->d_inode) == MINIX_V1)
-		stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size);
+		stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size, sb);
 	else
-		stat->blocks = (BLOCK_SIZE / 512) * V2_minix_blocks(stat->size);
-	stat->blksize = BLOCK_SIZE;
+		stat->blocks = (sb->s_blocksize / 512) * V2_minix_blocks(stat->size, sb);
+	stat->blksize = sb->s_blocksize;
 	return 0;
 }
 
diff --git a/fs/minix/itree_common.c b/fs/minix/itree_common.c
index 429baf8..a731cab 100644
--- a/fs/minix/itree_common.c
+++ b/fs/minix/itree_common.c
@@ -23,7 +23,7 @@ static inline int verify_chain(Indirect *from, Indirect *to)
 
 static inline block_t *block_end(struct buffer_head *bh)
 {
-	return (block_t *)((char*)bh->b_data + BLOCK_SIZE);
+	return (block_t *)((char*)bh->b_data + bh->b_size);
 }
 
 static inline Indirect *get_branch(struct inode *inode,
@@ -85,7 +85,7 @@ static int alloc_branch(struct inode *inode,
 		branch[n].key = cpu_to_block(nr);
 		bh = sb_getblk(inode->i_sb, parent);
 		lock_buffer(bh);
-		memset(bh->b_data, 0, BLOCK_SIZE);
+		memset(bh->b_data, 0, bh->b_size);
 		branch[n].bh = bh;
 		branch[n].p = (block_t*) bh->b_data + offsets[n];
 		*branch[n].p = branch[n].key;
@@ -292,6 +292,7 @@ static void free_branches(struct inode *inode, block_t *p, block_t *q, int depth
 
 static inline void truncate (struct inode * inode)
 {
+	struct super_block *sb = inode->i_sb;
 	block_t *idata = i_data(inode);
 	int offsets[DEPTH];
 	Indirect chain[DEPTH];
@@ -301,7 +302,7 @@ static inline void truncate (struct inode * inode)
 	int first_whole;
 	long iblock;
 
-	iblock = (inode->i_size + BLOCK_SIZE-1) >> 10;
+	iblock = (inode->i_size + sb->s_blocksize -1) >> sb->s_blocksize_bits;
 	block_truncate_page(inode->i_mapping, inode->i_size, get_block);
 
 	n = block_to_path(inode, iblock, offsets);
@@ -346,15 +347,16 @@ do_indirects:
 	mark_inode_dirty(inode);
 }
 
-static inline unsigned nblocks(loff_t size)
+static inline unsigned nblocks(loff_t size, struct super_block *sb)
 {
+	int k = sb->s_blocksize_bits - 10;
 	unsigned blocks, res, direct = DIRECT, i = DEPTH;
-	blocks = (size + BLOCK_SIZE - 1) >> BLOCK_SIZE_BITS;
+	blocks = (size + sb->s_blocksize - 1) >> (BLOCK_SIZE_BITS + k);
 	res = blocks;
 	while (--i && blocks > direct) {
 		blocks -= direct;
-		blocks += BLOCK_SIZE/sizeof(block_t) - 1;
-		blocks /= BLOCK_SIZE/sizeof(block_t);
+		blocks += sb->s_blocksize/sizeof(block_t) - 1;
+		blocks /= sb->s_blocksize/sizeof(block_t);
 		res += blocks;
 		direct = 1;
 	}
diff --git a/fs/minix/itree_v1.c b/fs/minix/itree_v1.c
index 656b134..1a5f3bf 100644
--- a/fs/minix/itree_v1.c
+++ b/fs/minix/itree_v1.c
@@ -55,7 +55,7 @@ void V1_minix_truncate(struct inode * inode)
 	truncate(inode);
 }
 
-unsigned V1_minix_blocks(loff_t size)
+unsigned V1_minix_blocks(loff_t size, struct super_block *sb)
 {
-	return nblocks(size);
+	return nblocks(size, sb);
 }
diff --git a/fs/minix/itree_v2.c b/fs/minix/itree_v2.c
index 9adcdc7..ad8f0de 100644
--- a/fs/minix/itree_v2.c
+++ b/fs/minix/itree_v2.c
@@ -23,10 +23,11 @@ static inline block_t *i_data(struct inode *inode)
 static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
 {
 	int n = 0;
+	struct super_block *sb = inode->i_sb;
 
 	if (block < 0) {
 		printk("minix_bmap: block<0\n");
-	} else if (block >= (minix_sb(inode->i_sb)->s_max_size/BLOCK_SIZE)) {
+	} else if (block >= (minix_sb(inode->i_sb)->s_max_size/sb->s_blocksize)) {
 		printk("minix_bmap: block>big\n");
 	} else if (block < 7) {
 		offsets[n++] = block;
@@ -60,7 +61,7 @@ void V2_minix_truncate(struct inode * inode)
 	truncate(inode);
 }
 
-unsigned V2_minix_blocks(loff_t size)
+unsigned V2_minix_blocks(loff_t size, struct super_block *sb)
 {
-	return nblocks(size);
+	return nblocks(size, sb);
 }
diff --git a/fs/minix/minix.h b/fs/minix/minix.h
index c55b77c..73ef84f 100644
--- a/fs/minix/minix.h
+++ b/fs/minix/minix.h
@@ -7,11 +7,10 @@
  * truncated. Else they will be disallowed (ENAMETOOLONG).
  */
 #define NO_TRUNCATE 1
-
 #define INODE_VERSION(inode)	minix_sb(inode->i_sb)->s_version
-
 #define MINIX_V1		0x0001		/* original minix fs */
 #define MINIX_V2		0x0002		/* minix V2 fs */
+#define MINIX_V3		0x0003		/* minix V3 fs */
 
 /*
  * minix fs inode data in memory
@@ -52,12 +51,10 @@ extern struct inode * minix_new_inode(const struct inode * dir, int * error);
 extern void minix_free_inode(struct inode * inode);
 extern unsigned long minix_count_free_inodes(struct minix_sb_info *sbi);
 extern int minix_new_block(struct inode * inode);
-extern void minix_free_block(struct inode * inode, int block);
+extern void minix_free_block(struct inode *inode, unsigned long block);
 extern unsigned long minix_count_free_blocks(struct minix_sb_info *sbi);
-
 extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 
-extern void V2_minix_truncate(struct inode *);
 extern void V1_minix_truncate(struct inode *);
 extern void V2_minix_truncate(struct inode *);
 extern void minix_truncate(struct inode *);
@@ -65,8 +62,8 @@ extern int minix_sync_inode(struct inode *);
 extern void minix_set_inode(struct inode *, dev_t);
 extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int);
 extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int);
-extern unsigned V1_minix_blocks(loff_t);
-extern unsigned V2_minix_blocks(loff_t);
+extern unsigned V1_minix_blocks(loff_t, struct super_block *);
+extern unsigned V2_minix_blocks(loff_t, struct super_block *);
 
 extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**);
 extern int minix_add_link(struct dentry*, struct inode*);
@@ -76,11 +73,10 @@ extern int minix_empty_dir(struct inode*);
 extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*);
 extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**);
 extern ino_t minix_inode_by_name(struct dentry*);
-
 extern int minix_sync_file(struct file *, struct dentry *, int);
 
-extern struct inode_operations minix_file_inode_operations;
-extern struct inode_operations minix_dir_inode_operations;
+extern const struct inode_operations minix_file_inode_operations;
+extern const struct inode_operations minix_dir_inode_operations;
 extern const struct file_operations minix_file_operations;
 extern const struct file_operations minix_dir_operations;
 extern struct dentry_operations minix_dentry_operations;
diff --git a/fs/minix/namei.c b/fs/minix/namei.c
index 299bb66..f4aa7a9 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -291,7 +291,7 @@ out:
 /*
  * directories can handle most operations...
  */
-struct inode_operations minix_dir_inode_operations = {
+const struct inode_operations minix_dir_inode_operations = {
 	.create		= minix_create,
 	.lookup		= minix_lookup,
 	.link		= minix_link,
diff --git a/fs/msdos/namei.c b/fs/msdos/namei.c
index 4524619..30f7d0a 100644
--- a/fs/msdos/namei.c
+++ b/fs/msdos/namei.c
@@ -646,7 +646,7 @@ out:
 	return err;
 }
 
-static struct inode_operations msdos_dir_inode_operations = {
+static const struct inode_operations msdos_dir_inode_operations = {
 	.create		= msdos_create,
 	.lookup		= msdos_lookup,
 	.unlink		= msdos_unlink,
diff --git a/fs/namei.c b/fs/namei.c
index e4f108f..161e222 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2744,7 +2744,7 @@ int page_symlink(struct inode *inode, const char *symname, int len)
 			mapping_gfp_mask(inode->i_mapping));
 }
 
-struct inode_operations page_symlink_inode_operations = {
+const struct inode_operations page_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
diff --git a/fs/namespace.c b/fs/namespace.c
index 5ef336c..fd999ca 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -53,9 +53,8 @@ static inline unsigned long hash(struct vfsmount *mnt, struct dentry *dentry)
 
 struct vfsmount *alloc_vfsmnt(const char *name)
 {
-	struct vfsmount *mnt = kmem_cache_alloc(mnt_cache, GFP_KERNEL);
+	struct vfsmount *mnt = kmem_cache_zalloc(mnt_cache, GFP_KERNEL);
 	if (mnt) {
-		memset(mnt, 0, sizeof(struct vfsmount));
 		atomic_set(&mnt->mnt_count, 1);
 		INIT_LIST_HEAD(&mnt->mnt_hash);
 		INIT_LIST_HEAD(&mnt->mnt_child);
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 7374777..011ef0b 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -58,7 +58,7 @@ const struct file_operations ncp_dir_operations =
 #endif
 };
 
-struct inode_operations ncp_dir_inode_operations =
+const struct inode_operations ncp_dir_inode_operations =
 {
 	.create		= ncp_create,
 	.lookup		= ncp_lookup,
diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c
index b91fea0..6b1f6d2 100644
--- a/fs/ncpfs/file.c
+++ b/fs/ncpfs/file.c
@@ -297,7 +297,7 @@ const struct file_operations ncp_file_operations =
 	.fsync		= ncp_fsync,
 };
 
-struct inode_operations ncp_file_inode_operations =
+const struct inode_operations ncp_file_inode_operations =
 {
 	.setattr	= ncp_notify_change,
 };
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index 67a90bf..14939dd 100644
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -90,7 +90,7 @@ static int ncp_remount(struct super_block *sb, int *flags, char* data)
 	return 0;
 }
 
-static struct super_operations ncp_sops =
+static const struct super_operations ncp_sops =
 {
 	.alloc_inode	= ncp_alloc_inode,
 	.destroy_inode	= ncp_destroy_inode,
@@ -229,7 +229,7 @@ static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
 }
 
 #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
-static struct inode_operations ncp_symlink_inode_operations = {
+static const struct inode_operations ncp_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index 7933e2e..75f309c 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -71,6 +71,8 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
 	complete(&nfs_callback_info.started);
 
 	for(;;) {
+		char buf[RPC_MAX_ADDRBUFLEN];
+
 		if (signalled()) {
 			if (nfs_callback_info.users == 0)
 				break;
@@ -88,8 +90,8 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
 					__FUNCTION__, -err);
 			break;
 		}
-		dprintk("%s: request from %u.%u.%u.%u\n", __FUNCTION__,
-				NIPQUAD(rqstp->rq_addr.sin_addr.s_addr));
+		dprintk("%s: request from %s\n", __FUNCTION__,
+				svc_print_addr(rqstp, buf, sizeof(buf)));
 		svc_process(rqstp);
 	}
 
@@ -106,7 +108,6 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
 int nfs_callback_up(void)
 {
 	struct svc_serv *serv;
-	struct svc_sock *svsk;
 	int ret = 0;
 
 	lock_kernel();
@@ -119,17 +120,14 @@ int nfs_callback_up(void)
 	ret = -ENOMEM;
 	if (!serv)
 		goto out_err;
-	/* FIXME: We don't want to register this socket with the portmapper */
-	ret = svc_makesock(serv, IPPROTO_TCP, nfs_callback_set_tcpport);
-	if (ret < 0)
+
+	ret = svc_makesock(serv, IPPROTO_TCP, nfs_callback_set_tcpport,
+							SVC_SOCK_ANONYMOUS);
+	if (ret <= 0)
 		goto out_destroy;
-	if (!list_empty(&serv->sv_permsocks)) {
-		svsk = list_entry(serv->sv_permsocks.next,
-				struct svc_sock, sk_list);
-		nfs_callback_tcpport = ntohs(inet_sk(svsk->sk_sk)->sport);
-		dprintk ("Callback port = 0x%x\n", nfs_callback_tcpport);
-	} else
-		BUG();
+	nfs_callback_tcpport = ret;
+	dprintk("Callback port = 0x%x\n", nfs_callback_tcpport);
+
 	ret = svc_create_thread(nfs_callback_svc, serv);
 	if (ret < 0)
 		goto out_destroy;
@@ -140,6 +138,8 @@ out:
 	unlock_kernel();
 	return ret;
 out_destroy:
+	dprintk("Couldn't create callback socket or server thread; err = %d\n",
+		ret);
 	svc_destroy(serv);
 out_err:
 	nfs_callback_info.users--;
@@ -166,15 +166,19 @@ void nfs_callback_down(void)
 
 static int nfs_callback_authenticate(struct svc_rqst *rqstp)
 {
-	struct sockaddr_in *addr = &rqstp->rq_addr;
+	struct sockaddr_in *addr = svc_addr_in(rqstp);
 	struct nfs_client *clp;
+	char buf[RPC_MAX_ADDRBUFLEN];
 
 	/* Don't talk to strangers */
 	clp = nfs_find_client(addr, 4);
 	if (clp == NULL)
 		return SVC_DROP;
-	dprintk("%s: %u.%u.%u.%u NFSv4 callback!\n", __FUNCTION__, NIPQUAD(addr->sin_addr));
+
+	dprintk("%s: %s NFSv4 callback!\n", __FUNCTION__,
+			svc_print_addr(rqstp, buf, sizeof(buf)));
 	nfs_put_client(clp);
+
 	switch (rqstp->rq_authop->flavour) {
 		case RPC_AUTH_NULL:
 			if (rqstp->rq_proc != CB_NULL)
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index f8ea1f5..849a202 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -176,7 +176,7 @@ static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr
 	status = decode_fh(xdr, &args->fh);
 	if (unlikely(status != 0))
 		goto out;
-	args->addr = &rqstp->rq_addr;
+	args->addr = svc_addr_in(rqstp);
 	status = decode_bitmap(xdr, args->bitmap);
 out:
 	dprintk("%s: exit with status = %d\n", __FUNCTION__, status);
@@ -188,7 +188,7 @@ static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr,
 	__be32 *p;
 	__be32 status;
 
-	args->addr = &rqstp->rq_addr;
+	args->addr = svc_addr_in(rqstp);
 	status = decode_stateid(xdr, &args->stateid);
 	if (unlikely(status != 0))
 		goto out;
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index c46e94f..2190e6c 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -1181,7 +1181,7 @@ static struct seq_operations nfs_server_list_ops = {
 	.show	= nfs_server_list_show,
 };
 
-static struct file_operations nfs_server_list_fops = {
+static const struct file_operations nfs_server_list_fops = {
 	.open		= nfs_server_list_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -1201,7 +1201,7 @@ static struct seq_operations nfs_volume_list_ops = {
 	.show	= nfs_volume_list_show,
 };
 
-static struct file_operations nfs_volume_list_fops = {
+static const struct file_operations nfs_volume_list_fops = {
 	.open		= nfs_volume_list_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 37c1dd6..92d8ec8 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -65,7 +65,7 @@ const struct file_operations nfs_dir_operations = {
 	.fsync		= nfs_fsync_dir,
 };
 
-struct inode_operations nfs_dir_inode_operations = {
+const struct inode_operations nfs_dir_inode_operations = {
 	.create		= nfs_create,
 	.lookup		= nfs_lookup,
 	.link		= nfs_link,
@@ -81,7 +81,7 @@ struct inode_operations nfs_dir_inode_operations = {
 };
 
 #ifdef CONFIG_NFS_V3
-struct inode_operations nfs3_dir_inode_operations = {
+const struct inode_operations nfs3_dir_inode_operations = {
 	.create		= nfs_create,
 	.lookup		= nfs_lookup,
 	.link		= nfs_link,
@@ -104,7 +104,7 @@ struct inode_operations nfs3_dir_inode_operations = {
 #ifdef CONFIG_NFS_V4
 
 static struct dentry *nfs_atomic_lookup(struct inode *, struct dentry *, struct nameidata *);
-struct inode_operations nfs4_dir_inode_operations = {
+const struct inode_operations nfs4_dir_inode_operations = {
 	.create		= nfs_create,
 	.lookup		= nfs_atomic_lookup,
 	.link		= nfs_link,
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 9e4a2b7..8e66b5a 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -68,14 +68,14 @@ const struct file_operations nfs_file_operations = {
 	.check_flags	= nfs_check_flags,
 };
 
-struct inode_operations nfs_file_inode_operations = {
+const struct inode_operations nfs_file_inode_operations = {
 	.permission	= nfs_permission,
 	.getattr	= nfs_getattr,
 	.setattr	= nfs_setattr,
 };
 
 #ifdef CONFIG_NFS_V3
-struct inode_operations nfs3_file_inode_operations = {
+const struct inode_operations nfs3_file_inode_operations = {
 	.permission	= nfs_permission,
 	.getattr	= nfs_getattr,
 	.setattr	= nfs_setattr,
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 371b804e..7f86e65 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -155,12 +155,12 @@ out_follow:
 	goto out;
 }
 
-struct inode_operations nfs_mountpoint_inode_operations = {
+const struct inode_operations nfs_mountpoint_inode_operations = {
 	.follow_link	= nfs_follow_mountpoint,
 	.getattr	= nfs_getattr,
 };
 
-struct inode_operations nfs_referral_inode_operations = {
+const struct inode_operations nfs_referral_inode_operations = {
 	.follow_link	= nfs_follow_mountpoint,
 };
 
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index f2c88ff..cf3a17e 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -151,7 +151,7 @@ struct nfs4_state_recovery_ops {
 };
 
 extern struct dentry_operations nfs4_dentry_operations;
-extern struct inode_operations nfs4_dir_inode_operations;
+extern const struct inode_operations nfs4_dir_inode_operations;
 
 /* inode.c */
 extern ssize_t nfs4_getxattr(struct dentry *, const char *, void *, size_t);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 1712d03..f52cf5c 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3584,7 +3584,7 @@ struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops = {
 	.recover_lock	= nfs4_lock_expired,
 };
 
-static struct inode_operations nfs4_file_inode_operations = {
+static const struct inode_operations nfs4_file_inode_operations = {
 	.permission	= nfs_permission,
 	.getattr	= nfs_getattr,
 	.setattr	= nfs_setattr,
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 89da0a3..bb516a2 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -44,6 +44,7 @@
 #include <linux/vfs.h>
 #include <linux/inet.h>
 #include <linux/nfs_xdr.h>
+#include <linux/magic.h>
 
 #include <asm/system.h>
 #include <asm/uaccess.h>
@@ -81,7 +82,7 @@ struct file_system_type nfs_xdev_fs_type = {
 	.fs_flags	= FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
 };
 
-static struct super_operations nfs_sops = {
+static const struct super_operations nfs_sops = {
 	.alloc_inode	= nfs_alloc_inode,
 	.destroy_inode	= nfs_destroy_inode,
 	.write_inode	= nfs_write_inode,
@@ -125,7 +126,7 @@ struct file_system_type nfs4_referral_fs_type = {
 	.fs_flags	= FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
 };
 
-static struct super_operations nfs4_sops = {
+static const struct super_operations nfs4_sops = {
 	.alloc_inode	= nfs_alloc_inode,
 	.destroy_inode	= nfs_destroy_inode,
 	.write_inode	= nfs_write_inode,
diff --git a/fs/nfs/symlink.c b/fs/nfs/symlink.c
index 525c136..f4a0548 100644
--- a/fs/nfs/symlink.c
+++ b/fs/nfs/symlink.c
@@ -78,7 +78,7 @@ read_failed:
 /*
  * symlinks can't do much...
  */
-struct inode_operations nfs_symlink_inode_operations = {
+const struct inode_operations nfs_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= nfs_follow_link,
 	.put_link	= page_put_link,
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 9de89df..9e40679 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -714,7 +714,7 @@ __be32
 nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		  struct nfsd4_setclientid *setclid)
 {
-	__be32 			ip_addr = rqstp->rq_addr.sin_addr.s_addr;
+	struct sockaddr_in	*sin = svc_addr_in(rqstp);
 	struct xdr_netobj 	clname = { 
 		.len = setclid->se_namelen,
 		.data = setclid->se_name,
@@ -749,7 +749,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		 */
 		status = nfserr_clid_inuse;
 		if (!cmp_creds(&conf->cl_cred, &rqstp->rq_cred)
-				|| conf->cl_addr != ip_addr) {
+				|| conf->cl_addr != sin->sin_addr.s_addr) {
 			printk("NFSD: setclientid: string in use by client"
 			"(clientid %08x/%08x)\n",
 			conf->cl_clientid.cl_boot, conf->cl_clientid.cl_id);
@@ -769,7 +769,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		if (new == NULL)
 			goto out;
 		copy_verf(new, &clverifier);
-		new->cl_addr = ip_addr;
+		new->cl_addr = sin->sin_addr.s_addr;
 		copy_cred(&new->cl_cred,&rqstp->rq_cred);
 		gen_clid(new);
 		gen_confirm(new);
@@ -801,7 +801,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		if (new == NULL)
 			goto out;
 		copy_verf(new,&conf->cl_verifier);
-		new->cl_addr = ip_addr;
+		new->cl_addr = sin->sin_addr.s_addr;
 		copy_cred(&new->cl_cred,&rqstp->rq_cred);
 		copy_clid(new, conf);
 		gen_confirm(new);
@@ -820,7 +820,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		if (new == NULL)
 			goto out;
 		copy_verf(new,&clverifier);
-		new->cl_addr = ip_addr;
+		new->cl_addr = sin->sin_addr.s_addr;
 		copy_cred(&new->cl_cred,&rqstp->rq_cred);
 		gen_clid(new);
 		gen_confirm(new);
@@ -847,7 +847,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		if (new == NULL)
 			goto out;
 		copy_verf(new,&clverifier);
-		new->cl_addr = ip_addr;
+		new->cl_addr = sin->sin_addr.s_addr;
 		copy_cred(&new->cl_cred,&rqstp->rq_cred);
 		gen_clid(new);
 		gen_confirm(new);
@@ -881,7 +881,7 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
 			 struct nfsd4_compound_state *cstate,
 			 struct nfsd4_setclientid_confirm *setclientid_confirm)
 {
-	__be32 ip_addr = rqstp->rq_addr.sin_addr.s_addr;
+	struct sockaddr_in *sin = svc_addr_in(rqstp);
 	struct nfs4_client *conf, *unconf;
 	nfs4_verifier confirm = setclientid_confirm->sc_confirm; 
 	clientid_t * clid = &setclientid_confirm->sc_clientid;
@@ -900,9 +900,9 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
 	unconf = find_unconfirmed_client(clid);
 
 	status = nfserr_clid_inuse;
-	if (conf && conf->cl_addr != ip_addr)
+	if (conf && conf->cl_addr != sin->sin_addr.s_addr)
 		goto out;
-	if (unconf && unconf->cl_addr != ip_addr)
+	if (unconf && unconf->cl_addr != sin->sin_addr.s_addr)
 		goto out;
 
 	if ((conf && unconf) && 
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index f90d704..578f2c9 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -185,7 +185,7 @@ nfsd_cache_lookup(struct svc_rqst *rqstp, int type)
 	rp->c_state = RC_INPROG;
 	rp->c_xid = xid;
 	rp->c_proc = proc;
-	rp->c_addr = rqstp->rq_addr;
+	memcpy(&rp->c_addr, svc_addr_in(rqstp), sizeof(rp->c_addr));
 	rp->c_prot = proto;
 	rp->c_vers = vers;
 	rp->c_timestamp = jiffies;
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index c59d6fb..a0b4282 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -20,6 +20,7 @@
 #include <linux/mount.h>
 #include <asm/pgtable.h>
 
+#include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/svc.h>
 #include <linux/nfsd/nfsd.h>
 
@@ -180,10 +181,10 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
 		/* Check if the request originated from a secure port. */
 		error = nfserr_perm;
 		if (!rqstp->rq_secure && EX_SECURE(exp)) {
+			char buf[RPC_MAX_ADDRBUFLEN];
 			printk(KERN_WARNING
-			       "nfsd: request from insecure port (%u.%u.%u.%u:%d)!\n",
-			       NIPQUAD(rqstp->rq_addr.sin_addr.s_addr),
-			       ntohs(rqstp->rq_addr.sin_port));
+			       "nfsd: request from insecure port %s!\n",
+			       svc_print_addr(rqstp, buf, sizeof(buf)));
 			goto out;
 		}
 
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index ec983b7..5cc2eec 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -19,6 +19,7 @@
 #include <linux/unistd.h>
 #include <linux/slab.h>
 
+#include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/svc.h>
 #include <linux/nfsd/nfsd.h>
 #include <linux/nfsd/cache.h>
@@ -147,10 +148,10 @@ nfsd_proc_read(struct svc_rqst *rqstp, struct nfsd_readargs *argp,
 	 */
 
 	if (NFSSVC_MAXBLKSIZE_V2 < argp->count) {
+		char buf[RPC_MAX_ADDRBUFLEN];
 		printk(KERN_NOTICE
-			"oversized read request from %u.%u.%u.%u:%d (%d bytes)\n",
-				NIPQUAD(rqstp->rq_addr.sin_addr.s_addr),
-				ntohs(rqstp->rq_addr.sin_port),
+			"oversized read request from %s (%d bytes)\n",
+				svc_print_addr(rqstp, buf, sizeof(buf)),
 				argp->count);
 		argp->count = NFSSVC_MAXBLKSIZE_V2;
 	}
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index fbf5d51..d7759ce 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -235,7 +235,8 @@ static int nfsd_init_socks(int port)
 
 	error = lockd_up(IPPROTO_UDP);
 	if (error >= 0) {
-		error = svc_makesock(nfsd_serv, IPPROTO_UDP, port);
+		error = svc_makesock(nfsd_serv, IPPROTO_UDP, port,
+					SVC_SOCK_DEFAULTS);
 		if (error < 0)
 			lockd_down();
 	}
@@ -245,7 +246,8 @@ static int nfsd_init_socks(int port)
 #ifdef CONFIG_NFSD_TCP
 	error = lockd_up(IPPROTO_TCP);
 	if (error >= 0) {
-		error = svc_makesock(nfsd_serv, IPPROTO_TCP, port);
+		error = svc_makesock(nfsd_serv, IPPROTO_TCP, port,
+					SVC_SOCK_DEFAULTS);
 		if (error < 0)
 			lockd_down();
 	}
diff --git a/fs/ntfs/attrib.c b/fs/ntfs/attrib.c
index c577d8e..7659cc1 100644
--- a/fs/ntfs/attrib.c
+++ b/fs/ntfs/attrib.c
@@ -1921,7 +1921,7 @@ s64 ntfs_attr_extend_allocation(ntfs_inode *ni, s64 new_alloc_size,
 	u32 attr_len = 0; /* Silence stupid gcc warning. */
 	bool mp_rebuilt;
 
-#ifdef NTFS_DEBUG
+#ifdef DEBUG
 	read_lock_irqsave(&ni->size_lock, flags);
 	allocated_size = ni->allocated_size;
 	read_unlock_irqrestore(&ni->size_lock, flags);
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index 076c942..d69c459 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -2328,7 +2328,7 @@ const struct file_operations ntfs_file_ops = {
 						    the data source. */
 };
 
-struct inode_operations ntfs_file_inode_ops = {
+const struct inode_operations ntfs_file_inode_ops = {
 #ifdef NTFS_RW
 	.truncate	= ntfs_truncate_vfs,
 	.setattr	= ntfs_setattr,
@@ -2337,4 +2337,4 @@ struct inode_operations ntfs_file_inode_ops = {
 
 const struct file_operations ntfs_empty_file_ops = {};
 
-struct inode_operations ntfs_empty_inode_ops = {};
+const struct inode_operations ntfs_empty_inode_ops = {};
diff --git a/fs/ntfs/namei.c b/fs/ntfs/namei.c
index eddb224..bff01a5 100644
--- a/fs/ntfs/namei.c
+++ b/fs/ntfs/namei.c
@@ -359,7 +359,7 @@ err_out:
 /**
  * Inode operations for directories.
  */
-struct inode_operations ntfs_dir_inode_ops = {
+const struct inode_operations ntfs_dir_inode_ops = {
 	.lookup	= ntfs_lookup,	/* VFS: Lookup directory. */
 };
 
diff --git a/fs/ntfs/ntfs.h b/fs/ntfs/ntfs.h
index a12847a..d73f5a9 100644
--- a/fs/ntfs/ntfs.h
+++ b/fs/ntfs/ntfs.h
@@ -61,13 +61,13 @@ extern const struct address_space_operations ntfs_aops;
 extern const struct address_space_operations ntfs_mst_aops;
 
 extern const struct  file_operations ntfs_file_ops;
-extern struct inode_operations ntfs_file_inode_ops;
+extern const struct inode_operations ntfs_file_inode_ops;
 
 extern const struct  file_operations ntfs_dir_ops;
-extern struct inode_operations ntfs_dir_inode_ops;
+extern const struct inode_operations ntfs_dir_inode_ops;
 
 extern const struct  file_operations ntfs_empty_file_ops;
-extern struct inode_operations ntfs_empty_inode_ops;
+extern const struct inode_operations ntfs_empty_inode_ops;
 
 extern struct export_operations ntfs_export_ops;
 
diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index babf94d..1594c90 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -2699,7 +2699,7 @@ static int ntfs_statfs(struct dentry *dentry, struct kstatfs *sfs)
 /**
  * The complete super operations.
  */
-static struct super_operations ntfs_sops = {
+static const struct super_operations ntfs_sops = {
 	.alloc_inode	= ntfs_alloc_big_inode,	  /* VFS: Allocate new inode. */
 	.destroy_inode	= ntfs_destroy_big_inode, /* VFS: Deallocate inode. */
 #ifdef NTFS_RW
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index 277ca67..5a9779b 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -184,10 +184,9 @@ static void o2hb_disarm_write_timeout(struct o2hb_region *reg)
 	flush_scheduled_work();
 }
 
-static inline void o2hb_bio_wait_init(struct o2hb_bio_wait_ctxt *wc,
-				      unsigned int num_ios)
+static inline void o2hb_bio_wait_init(struct o2hb_bio_wait_ctxt *wc)
 {
-	atomic_set(&wc->wc_num_reqs, num_ios);
+	atomic_set(&wc->wc_num_reqs, 1);
 	init_completion(&wc->wc_io_complete);
 	wc->wc_error = 0;
 }
@@ -212,6 +211,7 @@ static void o2hb_wait_on_io(struct o2hb_region *reg,
 	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);
 }
@@ -231,6 +231,7 @@ static int o2hb_bio_end_io(struct bio *bio,
 		return 1;
 
 	o2hb_bio_wait_dec(wc, 1);
+	bio_put(bio);
 	return 0;
 }
 
@@ -238,23 +239,22 @@ static int o2hb_bio_end_io(struct bio *bio,
  * start_slot. */
 static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg,
 				      struct o2hb_bio_wait_ctxt *wc,
-				      unsigned int start_slot,
-				      unsigned int num_slots)
+				      unsigned int *current_slot,
+				      unsigned int max_slots)
 {
-	int i, nr_vecs, len, first_page, last_page;
+	int len, current_page;
 	unsigned int vec_len, vec_start;
 	unsigned int bits = reg->hr_block_bits;
 	unsigned int spp = reg->hr_slots_per_page;
+	unsigned int cs = *current_slot;
 	struct bio *bio;
 	struct page *page;
 
-	nr_vecs = (num_slots + spp - 1) / spp;
-
 	/* Testing has shown this allocation to take long enough under
 	 * GFP_KERNEL that the local node can get fenced. It would be
 	 * nicest if we could pre-allocate these bios and avoid this
 	 * all together. */
-	bio = bio_alloc(GFP_ATOMIC, nr_vecs);
+	bio = bio_alloc(GFP_ATOMIC, 16);
 	if (!bio) {
 		mlog(ML_ERROR, "Could not alloc slots BIO!\n");
 		bio = ERR_PTR(-ENOMEM);
@@ -262,137 +262,53 @@ static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg,
 	}
 
 	/* Must put everything in 512 byte sectors for the bio... */
-	bio->bi_sector = (reg->hr_start_block + start_slot) << (bits - 9);
+	bio->bi_sector = (reg->hr_start_block + cs) << (bits - 9);
 	bio->bi_bdev = reg->hr_bdev;
 	bio->bi_private = wc;
 	bio->bi_end_io = o2hb_bio_end_io;
 
-	first_page = start_slot / spp;
-	last_page = first_page + nr_vecs;
-	vec_start = (start_slot << bits) % PAGE_CACHE_SIZE;
-	for(i = first_page; i < last_page; i++) {
-		page = reg->hr_slot_data[i];
+	vec_start = (cs << bits) % PAGE_CACHE_SIZE;
+	while(cs < max_slots) {
+		current_page = cs / spp;
+		page = reg->hr_slot_data[current_page];
 
-		vec_len = PAGE_CACHE_SIZE;
-		/* last page might be short */
-		if (((i + 1) * spp) > (start_slot + num_slots))
-			vec_len = ((num_slots + start_slot) % spp) << bits;
-		vec_len -=  vec_start;
+		vec_len = min(PAGE_CACHE_SIZE,
+			      (max_slots-cs) * (PAGE_CACHE_SIZE/spp) );
 
 		mlog(ML_HB_BIO, "page %d, vec_len = %u, vec_start = %u\n",
-		     i, vec_len, vec_start);
+		     current_page, vec_len, vec_start);
 
 		len = bio_add_page(bio, page, vec_len, vec_start);
-		if (len != vec_len) {
-			bio_put(bio);
-			bio = ERR_PTR(-EIO);
-
-			mlog(ML_ERROR, "Error adding page to bio i = %d, "
-			     "vec_len = %u, len = %d\n, start = %u\n",
-			     i, vec_len, len, vec_start);
-			goto bail;
-		}
+		if (len != vec_len) break;
 
+		cs += vec_len / (PAGE_CACHE_SIZE/spp);
 		vec_start = 0;
 	}
 
 bail:
+	*current_slot = cs;
 	return bio;
 }
 
-/*
- * Compute the maximum number of sectors the bdev can handle in one bio,
- * as a power of two.
- *
- * Stolen from oracleasm, thanks Joel!
- */
-static int compute_max_sectors(struct block_device *bdev)
-{
-	int max_pages, max_sectors, pow_two_sectors;
-
-	struct request_queue *q;
-
-	q = bdev_get_queue(bdev);
-	max_pages = q->max_sectors >> (PAGE_SHIFT - 9);
-	if (max_pages > BIO_MAX_PAGES)
-		max_pages = BIO_MAX_PAGES;
-	if (max_pages > q->max_phys_segments)
-		max_pages = q->max_phys_segments;
-	if (max_pages > q->max_hw_segments)
-		max_pages = q->max_hw_segments;
-	max_pages--; /* Handle I/Os that straddle a page */
-
-	if (max_pages) {
-		max_sectors = max_pages << (PAGE_SHIFT - 9);
-	} else {
-		/* If BIO contains 1 or less than 1 page. */
-		max_sectors = q->max_sectors;
-	}
-	/* Why is fls() 1-based???? */
-	pow_two_sectors = 1 << (fls(max_sectors) - 1);
-
-	return pow_two_sectors;
-}
-
-static inline void o2hb_compute_request_limits(struct o2hb_region *reg,
-					       unsigned int num_slots,
-					       unsigned int *num_bios,
-					       unsigned int *slots_per_bio)
-{
-	unsigned int max_sectors, io_sectors;
-
-	max_sectors = compute_max_sectors(reg->hr_bdev);
-
-	io_sectors = num_slots << (reg->hr_block_bits - 9);
-
-	*num_bios = (io_sectors + max_sectors - 1) / max_sectors;
-	*slots_per_bio = max_sectors >> (reg->hr_block_bits - 9);
-
-	mlog(ML_HB_BIO, "My io size is %u sectors for %u slots. This "
-	     "device can handle %u sectors of I/O\n", io_sectors, num_slots,
-	     max_sectors);
-	mlog(ML_HB_BIO, "Will need %u bios holding %u slots each\n",
-	     *num_bios, *slots_per_bio);
-}
-
 static int o2hb_read_slots(struct o2hb_region *reg,
 			   unsigned int max_slots)
 {
-	unsigned int num_bios, slots_per_bio, start_slot, num_slots;
-	int i, status;
+	unsigned int current_slot=0;
+	int status;
 	struct o2hb_bio_wait_ctxt wc;
-	struct bio **bios;
 	struct bio *bio;
 
-	o2hb_compute_request_limits(reg, max_slots, &num_bios, &slots_per_bio);
+	o2hb_bio_wait_init(&wc);
 
-	bios = kcalloc(num_bios, sizeof(struct bio *), GFP_KERNEL);
-	if (!bios) {
-		status = -ENOMEM;
-		mlog_errno(status);
-		return status;
-	}
-
-	o2hb_bio_wait_init(&wc, num_bios);
-
-	num_slots = slots_per_bio;
-	for(i = 0; i < num_bios; i++) {
-		start_slot = i * slots_per_bio;
-
-		/* adjust num_slots at last bio */
-		if (max_slots < (start_slot + num_slots))
-			num_slots = max_slots - start_slot;
-
-		bio = o2hb_setup_one_bio(reg, &wc, start_slot, num_slots);
+	while(current_slot < max_slots) {
+		bio = o2hb_setup_one_bio(reg, &wc, &current_slot, max_slots);
 		if (IS_ERR(bio)) {
-			o2hb_bio_wait_dec(&wc, num_bios - i);
-
 			status = PTR_ERR(bio);
 			mlog_errno(status);
 			goto bail_and_wait;
 		}
-		bios[i] = bio;
 
+		atomic_inc(&wc.wc_num_reqs);
 		submit_bio(READ, bio);
 	}
 
@@ -403,38 +319,30 @@ bail_and_wait:
 	if (wc.wc_error && !status)
 		status = wc.wc_error;
 
-	if (bios) {
-		for(i = 0; i < num_bios; i++)
-			if (bios[i])
-				bio_put(bios[i]);
-		kfree(bios);
-	}
-
 	return status;
 }
 
 static int o2hb_issue_node_write(struct o2hb_region *reg,
-				 struct bio **write_bio,
 				 struct o2hb_bio_wait_ctxt *write_wc)
 {
 	int status;
 	unsigned int slot;
 	struct bio *bio;
 
-	o2hb_bio_wait_init(write_wc, 1);
+	o2hb_bio_wait_init(write_wc);
 
 	slot = o2nm_this_node();
 
-	bio = o2hb_setup_one_bio(reg, write_wc, slot, 1);
+	bio = o2hb_setup_one_bio(reg, write_wc, &slot, slot+1);
 	if (IS_ERR(bio)) {
 		status = PTR_ERR(bio);
 		mlog_errno(status);
 		goto bail;
 	}
 
+	atomic_inc(&write_wc->wc_num_reqs);
 	submit_bio(WRITE, bio);
 
-	*write_bio = bio;
 	status = 0;
 bail:
 	return status;
@@ -826,7 +734,6 @@ static int o2hb_do_disk_heartbeat(struct o2hb_region *reg)
 {
 	int i, ret, highest_node, change = 0;
 	unsigned long configured_nodes[BITS_TO_LONGS(O2NM_MAX_NODES)];
-	struct bio *write_bio;
 	struct o2hb_bio_wait_ctxt write_wc;
 
 	ret = o2nm_configured_node_map(configured_nodes,
@@ -864,7 +771,7 @@ static int o2hb_do_disk_heartbeat(struct o2hb_region *reg)
 
 	/* And fire off the write. Note that we don't wait on this I/O
 	 * until later. */
-	ret = o2hb_issue_node_write(reg, &write_bio, &write_wc);
+	ret = o2hb_issue_node_write(reg, &write_wc);
 	if (ret < 0) {
 		mlog_errno(ret);
 		return ret;
@@ -882,7 +789,6 @@ static int o2hb_do_disk_heartbeat(struct o2hb_region *reg)
 	 * people we find in our steady state have seen us.
 	 */
 	o2hb_wait_on_io(reg, &write_wc);
-	bio_put(write_bio);
 	if (write_wc.wc_error) {
 		/* Do not re-arm the write timeout on I/O error - we
 		 * can't be sure that the new block ever made it to
@@ -943,7 +849,6 @@ static int o2hb_thread(void *data)
 {
 	int i, ret;
 	struct o2hb_region *reg = data;
-	struct bio *write_bio;
 	struct o2hb_bio_wait_ctxt write_wc;
 	struct timeval before_hb, after_hb;
 	unsigned int elapsed_msec;
@@ -993,10 +898,9 @@ static int o2hb_thread(void *data)
 	 *
 	 * XXX: Should we skip this on unclean_stop? */
 	o2hb_prepare_block(reg, 0);
-	ret = o2hb_issue_node_write(reg, &write_bio, &write_wc);
+	ret = o2hb_issue_node_write(reg, &write_wc);
 	if (ret == 0) {
 		o2hb_wait_on_io(reg, &write_wc);
-		bio_put(write_bio);
 	} else {
 		mlog_errno(ret);
 	}
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index ae4ff4a..1718215 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -556,6 +556,8 @@ static void o2net_register_callbacks(struct sock *sk,
 	sk->sk_data_ready = o2net_data_ready;
 	sk->sk_state_change = o2net_state_change;
 
+	mutex_init(&sc->sc_send_lock);
+
 	write_unlock_bh(&sk->sk_callback_lock);
 }
 
@@ -688,6 +690,7 @@ static void o2net_handler_put(struct o2net_msg_handler *nmh)
  * be given to the handler if their payload is longer than the max. */
 int o2net_register_handler(u32 msg_type, u32 key, u32 max_len,
 			   o2net_msg_handler_func *func, void *data,
+			   o2net_post_msg_handler_func *post_func,
 			   struct list_head *unreg_list)
 {
 	struct o2net_msg_handler *nmh = NULL;
@@ -722,6 +725,7 @@ int o2net_register_handler(u32 msg_type, u32 key, u32 max_len,
 
 	nmh->nh_func = func;
 	nmh->nh_func_data = data;
+	nmh->nh_post_func = post_func;
 	nmh->nh_msg_type = msg_type;
 	nmh->nh_max_len = max_len;
 	nmh->nh_key = key;
@@ -856,10 +860,12 @@ static void o2net_sendpage(struct o2net_sock_container *sc,
 	ssize_t ret;
 
 
+	mutex_lock(&sc->sc_send_lock);
 	ret = sc->sc_sock->ops->sendpage(sc->sc_sock,
 					 virt_to_page(kmalloced_virt),
 					 (long)kmalloced_virt & ~PAGE_MASK,
 					 size, MSG_DONTWAIT);
+	mutex_unlock(&sc->sc_send_lock);
 	if (ret != size) {
 		mlog(ML_ERROR, "sendpage of size %zu to " SC_NODEF_FMT 
 		     " failed with %zd\n", size, SC_NODEF_ARGS(sc), ret);
@@ -974,8 +980,10 @@ int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *caller_vec,
 
 	/* finally, convert the message header to network byte-order
 	 * and send */
+	mutex_lock(&sc->sc_send_lock);
 	ret = o2net_send_tcp_msg(sc->sc_sock, vec, veclen,
 				 sizeof(struct o2net_msg) + caller_bytes);
+	mutex_unlock(&sc->sc_send_lock);
 	msglog(msg, "sending returned %d\n", ret);
 	if (ret < 0) {
 		mlog(0, "error returned from o2net_send_tcp_msg=%d\n", ret);
@@ -1049,6 +1057,7 @@ static int o2net_process_message(struct o2net_sock_container *sc,
 	int ret = 0, handler_status;
 	enum  o2net_system_error syserr;
 	struct o2net_msg_handler *nmh = NULL;
+	void *ret_data = NULL;
 
 	msglog(hdr, "processing message\n");
 
@@ -1101,17 +1110,26 @@ static int o2net_process_message(struct o2net_sock_container *sc,
 	sc->sc_msg_type = be16_to_cpu(hdr->msg_type);
 	handler_status = (nmh->nh_func)(hdr, sizeof(struct o2net_msg) +
 					     be16_to_cpu(hdr->data_len),
-					nmh->nh_func_data);
+					nmh->nh_func_data, &ret_data);
 	do_gettimeofday(&sc->sc_tv_func_stop);
 
 out_respond:
 	/* this destroys the hdr, so don't use it after this */
+	mutex_lock(&sc->sc_send_lock);
 	ret = o2net_send_status_magic(sc->sc_sock, hdr, syserr,
 				      handler_status);
+	mutex_unlock(&sc->sc_send_lock);
 	hdr = NULL;
 	mlog(0, "sending handler status %d, syserr %d returned %d\n",
 	     handler_status, syserr, ret);
 
+	if (nmh) {
+		BUG_ON(ret_data != NULL && nmh->nh_post_func == NULL);
+		if (nmh->nh_post_func)
+			(nmh->nh_post_func)(handler_status, nmh->nh_func_data,
+					    ret_data);
+	}
+
 out:
 	if (nmh)
 		o2net_handler_put(nmh);
@@ -1795,13 +1813,13 @@ out:
 	ready(sk, bytes);
 }
 
-static int o2net_open_listening_sock(__be16 port)
+static int o2net_open_listening_sock(__be32 addr, __be16 port)
 {
 	struct socket *sock = NULL;
 	int ret;
 	struct sockaddr_in sin = {
 		.sin_family = PF_INET,
-		.sin_addr = { .s_addr = (__force u32)htonl(INADDR_ANY) },
+		.sin_addr = { .s_addr = (__force u32)addr },
 		.sin_port = (__force u16)port,
 	};
 
@@ -1824,15 +1842,15 @@ static int o2net_open_listening_sock(__be16 port)
 	sock->sk->sk_reuse = 1;
 	ret = sock->ops->bind(sock, (struct sockaddr *)&sin, sizeof(sin));
 	if (ret < 0) {
-		mlog(ML_ERROR, "unable to bind socket to port %d, ret=%d\n",
-		     ntohs(port), ret);
+		mlog(ML_ERROR, "unable to bind socket at %u.%u.%u.%u:%u, "
+		     "ret=%d\n", NIPQUAD(addr), ntohs(port), ret);
 		goto out;
 	}
 
 	ret = sock->ops->listen(sock, 64);
 	if (ret < 0) {
-		mlog(ML_ERROR, "unable to listen on port %d, ret=%d\n",
-		     ntohs(port), ret);
+		mlog(ML_ERROR, "unable to listen on %u.%u.%u.%u:%u, ret=%d\n",
+		     NIPQUAD(addr), ntohs(port), ret);
 	}
 
 out:
@@ -1865,7 +1883,8 @@ int o2net_start_listening(struct o2nm_node *node)
 		return -ENOMEM; /* ? */
 	}
 
-	ret = o2net_open_listening_sock(node->nd_ipv4_port);
+	ret = o2net_open_listening_sock(node->nd_ipv4_address,
+					node->nd_ipv4_port);
 	if (ret) {
 		destroy_workqueue(o2net_wq);
 		o2net_wq = NULL;
diff --git a/fs/ocfs2/cluster/tcp.h b/fs/ocfs2/cluster/tcp.h
index 21a4e43..da880fc 100644
--- a/fs/ocfs2/cluster/tcp.h
+++ b/fs/ocfs2/cluster/tcp.h
@@ -50,7 +50,10 @@ struct o2net_msg
 	__u8  buf[0];
 };
 
-typedef int (o2net_msg_handler_func)(struct o2net_msg *msg, u32 len, void *data);
+typedef int (o2net_msg_handler_func)(struct o2net_msg *msg, u32 len, void *data,
+				     void **ret_data);
+typedef void (o2net_post_msg_handler_func)(int status, void *data,
+					   void *ret_data);
 
 #define O2NET_MAX_PAYLOAD_BYTES  (4096 - sizeof(struct o2net_msg))
 
@@ -99,6 +102,7 @@ int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *vec,
 
 int o2net_register_handler(u32 msg_type, u32 key, u32 max_len,
 			   o2net_msg_handler_func *func, void *data,
+			   o2net_post_msg_handler_func *post_func,
 			   struct list_head *unreg_list);
 void o2net_unregister_handler_list(struct list_head *list);
 
diff --git a/fs/ocfs2/cluster/tcp_internal.h b/fs/ocfs2/cluster/tcp_internal.h
index b700dc9..4dae5df 100644
--- a/fs/ocfs2/cluster/tcp_internal.h
+++ b/fs/ocfs2/cluster/tcp_internal.h
@@ -38,6 +38,12 @@
  * locking semantics of the file system using the protocol.  It should 
  * be somewhere else, I'm sure, but right now it isn't.
  *
+ * New in version 7:
+ * 	- DLM join domain includes the live nodemap
+ *
+ * New in version 6:
+ * 	- DLM lockres remote refcount fixes.
+ *
  * New in version 5:
  * 	- Network timeout checking protocol
  *
@@ -51,7 +57,7 @@
  * 	- full 64 bit i_size in the metadata lock lvbs
  * 	- introduction of "rw" lock and pushing meta/data locking down
  */
-#define O2NET_PROTOCOL_VERSION 5ULL
+#define O2NET_PROTOCOL_VERSION 7ULL
 struct o2net_handshake {
 	__be64	protocol_version;
 	__be64	connector_id;
@@ -149,6 +155,8 @@ struct o2net_sock_container {
 	struct timeval 		sc_tv_func_stop;
 	u32			sc_msg_key;
 	u16			sc_msg_type;
+
+	struct mutex		sc_send_lock;
 };
 
 struct o2net_msg_handler {
@@ -158,6 +166,8 @@ struct o2net_msg_handler {
 	u32			nh_key;
 	o2net_msg_handler_func	*nh_func;
 	o2net_msg_handler_func	*nh_func_data;
+	o2net_post_msg_handler_func
+				*nh_post_func;
 	struct kref		nh_kref;
 	struct list_head	nh_unregister_item;
 };
diff --git a/fs/ocfs2/dlm/dlmast.c b/fs/ocfs2/dlm/dlmast.c
index 681046d..241cad3 100644
--- a/fs/ocfs2/dlm/dlmast.c
+++ b/fs/ocfs2/dlm/dlmast.c
@@ -263,7 +263,8 @@ void dlm_do_local_bast(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 
 
 
-int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data,
+			  void **ret_data)
 {
 	int ret;
 	unsigned int locklen;
@@ -311,8 +312,8 @@ int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data)
 	    past->type != DLM_BAST) {
 		mlog(ML_ERROR, "Unknown ast type! %d, cookie=%u:%llu"
 		     "name=%.*s\n", past->type, 
-		     dlm_get_lock_cookie_node(cookie),
-		     dlm_get_lock_cookie_seq(cookie),
+		     dlm_get_lock_cookie_node(be64_to_cpu(cookie)),
+		     dlm_get_lock_cookie_seq(be64_to_cpu(cookie)),
 		     locklen, name);
 		ret = DLM_IVLOCKID;
 		goto leave;
@@ -323,8 +324,8 @@ int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data)
 		mlog(0, "got %sast for unknown lockres! "
 		     "cookie=%u:%llu, name=%.*s, namelen=%u\n",
 		     past->type == DLM_AST ? "" : "b",
-		     dlm_get_lock_cookie_node(cookie),
-		     dlm_get_lock_cookie_seq(cookie),
+		     dlm_get_lock_cookie_node(be64_to_cpu(cookie)),
+		     dlm_get_lock_cookie_seq(be64_to_cpu(cookie)),
 		     locklen, name, locklen);
 		ret = DLM_IVLOCKID;
 		goto leave;
@@ -369,7 +370,8 @@ int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data)
 
 	mlog(0, "got %sast for unknown lock!  cookie=%u:%llu, "
 	     "name=%.*s, namelen=%u\n", past->type == DLM_AST ? "" : "b", 
-	     dlm_get_lock_cookie_node(cookie), dlm_get_lock_cookie_seq(cookie),
+	     dlm_get_lock_cookie_node(be64_to_cpu(cookie)),
+	     dlm_get_lock_cookie_seq(be64_to_cpu(cookie)),
 	     locklen, name, locklen);
 
 	ret = DLM_NORMAL;
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index 6b6ff76..e90b92f 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -180,6 +180,11 @@ struct dlm_assert_master_priv
 	unsigned ignore_higher:1;
 };
 
+struct dlm_deref_lockres_priv
+{
+	struct dlm_lock_resource *deref_res;
+	u8 deref_node;
+};
 
 struct dlm_work_item
 {
@@ -191,6 +196,7 @@ struct dlm_work_item
 		struct dlm_request_all_locks_priv ral;
 		struct dlm_mig_lockres_priv ml;
 		struct dlm_assert_master_priv am;
+		struct dlm_deref_lockres_priv dl;
 	} u;
 };
 
@@ -222,6 +228,9 @@ static inline void __dlm_set_joining_node(struct dlm_ctxt *dlm,
 #define DLM_LOCK_RES_DIRTY                0x00000008
 #define DLM_LOCK_RES_IN_PROGRESS          0x00000010
 #define DLM_LOCK_RES_MIGRATING            0x00000020
+#define DLM_LOCK_RES_DROPPING_REF         0x00000040
+#define DLM_LOCK_RES_BLOCK_DIRTY          0x00001000
+#define DLM_LOCK_RES_SETREF_INPROG        0x00002000
 
 /* max milliseconds to wait to sync up a network failure with a node death */
 #define DLM_NODE_DEATH_WAIT_MAX (5 * 1000)
@@ -265,6 +274,8 @@ struct dlm_lock_resource
 	u8  owner;              //node which owns the lock resource, or unknown
 	u16 state;
 	char lvb[DLM_LVB_LEN];
+	unsigned int inflight_locks;
+	unsigned long refmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
 };
 
 struct dlm_migratable_lock
@@ -367,7 +378,7 @@ enum {
 	DLM_CONVERT_LOCK_MSG,	 /* 504 */
 	DLM_PROXY_AST_MSG,	 /* 505 */
 	DLM_UNLOCK_LOCK_MSG,	 /* 506 */
-	DLM_UNUSED_MSG2,	 /* 507 */
+	DLM_DEREF_LOCKRES_MSG,	 /* 507 */
 	DLM_MIGRATE_REQUEST_MSG, /* 508 */
 	DLM_MIG_LOCKRES_MSG, 	 /* 509 */
 	DLM_QUERY_JOIN_MSG,	 /* 510 */
@@ -417,6 +428,9 @@ struct dlm_master_request
 	u8 name[O2NM_MAX_NAME_LEN];
 };
 
+#define DLM_ASSERT_RESPONSE_REASSERT       0x00000001
+#define DLM_ASSERT_RESPONSE_MASTERY_REF    0x00000002
+
 #define DLM_ASSERT_MASTER_MLE_CLEANUP      0x00000001
 #define DLM_ASSERT_MASTER_REQUERY          0x00000002
 #define DLM_ASSERT_MASTER_FINISH_MIGRATION 0x00000004
@@ -430,6 +444,8 @@ struct dlm_assert_master
 	u8 name[O2NM_MAX_NAME_LEN];
 };
 
+#define DLM_MIGRATE_RESPONSE_MASTERY_REF   0x00000001
+
 struct dlm_migrate_request
 {
 	u8 master;
@@ -609,12 +625,16 @@ struct dlm_begin_reco
 };
 
 
+#define BITS_PER_BYTE 8
+#define BITS_TO_BYTES(bits) (((bits)+BITS_PER_BYTE-1)/BITS_PER_BYTE)
+
 struct dlm_query_join_request
 {
 	u8 node_idx;
 	u8 pad1[2];
 	u8 name_len;
 	u8 domain[O2NM_MAX_NAME_LEN];
+	u8 node_map[BITS_TO_BYTES(O2NM_MAX_NODES)];
 };
 
 struct dlm_assert_joined
@@ -648,6 +668,16 @@ struct dlm_finalize_reco
 	__be32 pad2;
 };
 
+struct dlm_deref_lockres
+{
+	u32 pad1;
+	u16 pad2;
+	u8 node_idx;
+	u8 namelen;
+
+	u8 name[O2NM_MAX_NAME_LEN];
+};
+
 static inline enum dlm_status
 __dlm_lockres_state_to_status(struct dlm_lock_resource *res)
 {
@@ -688,16 +718,20 @@ void dlm_lock_put(struct dlm_lock *lock);
 void dlm_lock_attach_lockres(struct dlm_lock *lock,
 			     struct dlm_lock_resource *res);
 
-int dlm_create_lock_handler(struct o2net_msg *msg, u32 len, void *data);
-int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data);
-int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data);
+int dlm_create_lock_handler(struct o2net_msg *msg, u32 len, void *data,
+			    void **ret_data);
+int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data,
+			     void **ret_data);
+int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data,
+			  void **ret_data);
 
 void dlm_revert_pending_convert(struct dlm_lock_resource *res,
 				struct dlm_lock *lock);
 void dlm_revert_pending_lock(struct dlm_lock_resource *res,
 			     struct dlm_lock *lock);
 
-int dlm_unlock_lock_handler(struct o2net_msg *msg, u32 len, void *data);
+int dlm_unlock_lock_handler(struct o2net_msg *msg, u32 len, void *data,
+			    void **ret_data);
 void dlm_commit_pending_cancel(struct dlm_lock_resource *res,
 			       struct dlm_lock *lock);
 void dlm_commit_pending_unlock(struct dlm_lock_resource *res,
@@ -721,8 +755,6 @@ void __dlm_lockres_calc_usage(struct dlm_ctxt *dlm,
 			      struct dlm_lock_resource *res);
 void dlm_lockres_calc_usage(struct dlm_ctxt *dlm,
 			    struct dlm_lock_resource *res);
-void dlm_purge_lockres(struct dlm_ctxt *dlm,
-		       struct dlm_lock_resource *lockres);
 static inline void dlm_lockres_get(struct dlm_lock_resource *res)
 {
 	/* This is called on every lookup, so it might be worth
@@ -733,6 +765,10 @@ void dlm_lockres_put(struct dlm_lock_resource *res);
 void __dlm_unhash_lockres(struct dlm_lock_resource *res);
 void __dlm_insert_lockres(struct dlm_ctxt *dlm,
 			  struct dlm_lock_resource *res);
+struct dlm_lock_resource * __dlm_lookup_lockres_full(struct dlm_ctxt *dlm,
+						     const char *name,
+						     unsigned int len,
+						     unsigned int hash);
 struct dlm_lock_resource * __dlm_lookup_lockres(struct dlm_ctxt *dlm,
 						const char *name,
 						unsigned int len,
@@ -753,6 +789,47 @@ struct dlm_lock_resource *dlm_new_lockres(struct dlm_ctxt *dlm,
 					  const char *name,
 					  unsigned int namelen);
 
+#define dlm_lockres_set_refmap_bit(bit,res)  \
+	__dlm_lockres_set_refmap_bit(bit,res,__FILE__,__LINE__)
+#define dlm_lockres_clear_refmap_bit(bit,res)  \
+	__dlm_lockres_clear_refmap_bit(bit,res,__FILE__,__LINE__)
+
+static inline void __dlm_lockres_set_refmap_bit(int bit,
+						struct dlm_lock_resource *res,
+						const char *file,
+						int line)
+{
+	//printk("%s:%d:%.*s: setting bit %d\n", file, line,
+	//     res->lockname.len, res->lockname.name, bit);
+	set_bit(bit, res->refmap);
+}
+
+static inline void __dlm_lockres_clear_refmap_bit(int bit,
+						  struct dlm_lock_resource *res,
+						  const char *file,
+						  int line)
+{
+	//printk("%s:%d:%.*s: clearing bit %d\n", file, line,
+	//     res->lockname.len, res->lockname.name, bit);
+	clear_bit(bit, res->refmap);
+}
+
+void __dlm_lockres_drop_inflight_ref(struct dlm_ctxt *dlm,
+				   struct dlm_lock_resource *res,
+				   const char *file,
+				   int line);
+void __dlm_lockres_grab_inflight_ref(struct dlm_ctxt *dlm,
+				   struct dlm_lock_resource *res,
+				   int new_lockres,
+				   const char *file,
+				   int line);
+#define dlm_lockres_drop_inflight_ref(d,r)  \
+	__dlm_lockres_drop_inflight_ref(d,r,__FILE__,__LINE__)
+#define dlm_lockres_grab_inflight_ref(d,r)  \
+	__dlm_lockres_grab_inflight_ref(d,r,0,__FILE__,__LINE__)
+#define dlm_lockres_grab_inflight_ref_new(d,r)  \
+	__dlm_lockres_grab_inflight_ref(d,r,1,__FILE__,__LINE__)
+
 void dlm_queue_ast(struct dlm_ctxt *dlm, struct dlm_lock *lock);
 void dlm_queue_bast(struct dlm_ctxt *dlm, struct dlm_lock *lock);
 void dlm_do_local_ast(struct dlm_ctxt *dlm,
@@ -801,10 +878,7 @@ int dlm_heartbeat_init(struct dlm_ctxt *dlm);
 void dlm_hb_node_down_cb(struct o2nm_node *node, int idx, void *data);
 void dlm_hb_node_up_cb(struct o2nm_node *node, int idx, void *data);
 
-int dlm_lockres_is_dirty(struct dlm_ctxt *dlm, struct dlm_lock_resource *res);
-int dlm_migrate_lockres(struct dlm_ctxt *dlm,
-			struct dlm_lock_resource *res,
-			u8 target);
+int dlm_empty_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res);
 int dlm_finish_migration(struct dlm_ctxt *dlm,
 			 struct dlm_lock_resource *res,
 			 u8 old_master);
@@ -812,15 +886,27 @@ void dlm_lockres_release_ast(struct dlm_ctxt *dlm,
 			     struct dlm_lock_resource *res);
 void __dlm_lockres_reserve_ast(struct dlm_lock_resource *res);
 
-int dlm_master_request_handler(struct o2net_msg *msg, u32 len, void *data);
-int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data);
-int dlm_migrate_request_handler(struct o2net_msg *msg, u32 len, void *data);
-int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data);
-int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data);
-int dlm_request_all_locks_handler(struct o2net_msg *msg, u32 len, void *data);
-int dlm_reco_data_done_handler(struct o2net_msg *msg, u32 len, void *data);
-int dlm_begin_reco_handler(struct o2net_msg *msg, u32 len, void *data);
-int dlm_finalize_reco_handler(struct o2net_msg *msg, u32 len, void *data);
+int dlm_master_request_handler(struct o2net_msg *msg, u32 len, void *data,
+			       void **ret_data);
+int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data,
+			      void **ret_data);
+void dlm_assert_master_post_handler(int status, void *data, void *ret_data);
+int dlm_deref_lockres_handler(struct o2net_msg *msg, u32 len, void *data,
+			      void **ret_data);
+int dlm_migrate_request_handler(struct o2net_msg *msg, u32 len, void *data,
+				void **ret_data);
+int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data,
+			    void **ret_data);
+int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data,
+			       void **ret_data);
+int dlm_request_all_locks_handler(struct o2net_msg *msg, u32 len, void *data,
+				  void **ret_data);
+int dlm_reco_data_done_handler(struct o2net_msg *msg, u32 len, void *data,
+			       void **ret_data);
+int dlm_begin_reco_handler(struct o2net_msg *msg, u32 len, void *data,
+			   void **ret_data);
+int dlm_finalize_reco_handler(struct o2net_msg *msg, u32 len, void *data,
+			      void **ret_data);
 int dlm_do_master_requery(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 			  u8 nodenum, u8 *real_master);
 
@@ -856,10 +942,12 @@ static inline void __dlm_wait_on_lockres(struct dlm_lock_resource *res)
 int dlm_init_mle_cache(void);
 void dlm_destroy_mle_cache(void);
 void dlm_hb_event_notify_attached(struct dlm_ctxt *dlm, int idx, int node_up);
+int dlm_drop_lockres_ref(struct dlm_ctxt *dlm,
+			 struct dlm_lock_resource *res);
 void dlm_clean_master_list(struct dlm_ctxt *dlm,
 			   u8 dead_node);
 int dlm_lock_basts_flushed(struct dlm_ctxt *dlm, struct dlm_lock *lock);
-
+int __dlm_lockres_has_locks(struct dlm_lock_resource *res);
 int __dlm_lockres_unused(struct dlm_lock_resource *res);
 
 static inline const char * dlm_lock_mode_name(int mode)
diff --git a/fs/ocfs2/dlm/dlmconvert.c b/fs/ocfs2/dlm/dlmconvert.c
index c764dc8..ecb4d99 100644
--- a/fs/ocfs2/dlm/dlmconvert.c
+++ b/fs/ocfs2/dlm/dlmconvert.c
@@ -286,8 +286,8 @@ enum dlm_status dlmconvert_remote(struct dlm_ctxt *dlm,
 		__dlm_print_one_lock_resource(res);
 		mlog(ML_ERROR, "converting a remote lock that is already "
 		     "converting! (cookie=%u:%llu, conv=%d)\n",
-		     dlm_get_lock_cookie_node(lock->ml.cookie),
-		     dlm_get_lock_cookie_seq(lock->ml.cookie),
+		     dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
+		     dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
 		     lock->ml.convert_type);
 		status = DLM_DENIED;
 		goto bail;
@@ -418,7 +418,8 @@ static enum dlm_status dlm_send_remote_convert_request(struct dlm_ctxt *dlm,
  * returns: DLM_NORMAL, DLM_IVLOCKID, DLM_BADARGS,
  *          status from __dlmconvert_master
  */
-int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data,
+			     void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	struct dlm_convert_lock *cnv = (struct dlm_convert_lock *)msg->buf;
@@ -428,7 +429,7 @@ int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data)
 	struct dlm_lockstatus *lksb;
 	enum dlm_status status = DLM_NORMAL;
 	u32 flags;
-	int call_ast = 0, kick_thread = 0, ast_reserved = 0;
+	int call_ast = 0, kick_thread = 0, ast_reserved = 0, wake = 0;
 
 	if (!dlm_grab(dlm)) {
 		dlm_error(DLM_REJECTED);
@@ -479,25 +480,14 @@ int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data)
 		}
 		lock = NULL;
 	}
-	if (!lock) {
-		__dlm_print_one_lock_resource(res);
-		list_for_each(iter, &res->granted) {
-			lock = list_entry(iter, struct dlm_lock, list);
-			if (lock->ml.node == cnv->node_idx) {
-				mlog(ML_ERROR, "There is something here "
-				     "for node %u, lock->ml.cookie=%llu, "
-				     "cnv->cookie=%llu\n", cnv->node_idx,
-				     (unsigned long long)lock->ml.cookie,
-				     (unsigned long long)cnv->cookie);
-				break;
-			}
-		}
-		lock = NULL;
-	}
 	spin_unlock(&res->spinlock);
 	if (!lock) {
 		status = DLM_IVLOCKID;
-		dlm_error(status);
+		mlog(ML_ERROR, "did not find lock to convert on grant queue! "
+			       "cookie=%u:%llu\n",
+		     dlm_get_lock_cookie_node(be64_to_cpu(cnv->cookie)),
+		     dlm_get_lock_cookie_seq(be64_to_cpu(cnv->cookie)));
+		__dlm_print_one_lock_resource(res);
 		goto leave;
 	}
 
@@ -524,8 +514,11 @@ int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data)
 					     cnv->requested_type,
 					     &call_ast, &kick_thread);
 		res->state &= ~DLM_LOCK_RES_IN_PROGRESS;
+		wake = 1;
 	}
 	spin_unlock(&res->spinlock);
+	if (wake)
+		wake_up(&res->wq);
 
 	if (status != DLM_NORMAL) {
 		if (status != DLM_NOTQUEUED)
@@ -534,12 +527,7 @@ int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data)
 	}
 
 leave:
-	if (!lock)
-		mlog(ML_ERROR, "did not find lock to convert on grant queue! "
-			       "cookie=%u:%llu\n",
-			       dlm_get_lock_cookie_node(cnv->cookie),
-			       dlm_get_lock_cookie_seq(cnv->cookie));
-	else
+	if (lock)
 		dlm_lock_put(lock);
 
 	/* either queue the ast or release it, if reserved */
diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c
index 3f6c8d8..64239b3 100644
--- a/fs/ocfs2/dlm/dlmdebug.c
+++ b/fs/ocfs2/dlm/dlmdebug.c
@@ -53,6 +53,23 @@ void dlm_print_one_lock_resource(struct dlm_lock_resource *res)
 	spin_unlock(&res->spinlock);
 }
 
+static void dlm_print_lockres_refmap(struct dlm_lock_resource *res)
+{
+	int bit;
+	assert_spin_locked(&res->spinlock);
+
+	mlog(ML_NOTICE, "  refmap nodes: [ ");
+	bit = 0;
+	while (1) {
+		bit = find_next_bit(res->refmap, O2NM_MAX_NODES, bit);
+		if (bit >= O2NM_MAX_NODES)
+			break;
+		printk("%u ", bit);
+		bit++;
+	}
+	printk("], inflight=%u\n", res->inflight_locks);
+}
+
 void __dlm_print_one_lock_resource(struct dlm_lock_resource *res)
 {
 	struct list_head *iter2;
@@ -65,6 +82,7 @@ void __dlm_print_one_lock_resource(struct dlm_lock_resource *res)
 	       res->owner, res->state);
 	mlog(ML_NOTICE, "  last used: %lu, on purge list: %s\n",
 	     res->last_used, list_empty(&res->purge) ? "no" : "yes");
+	dlm_print_lockres_refmap(res);
 	mlog(ML_NOTICE, "  granted queue: \n");
 	list_for_each(iter2, &res->granted) {
 		lock = list_entry(iter2, struct dlm_lock, list);
@@ -72,8 +90,8 @@ void __dlm_print_one_lock_resource(struct dlm_lock_resource *res)
 		mlog(ML_NOTICE, "    type=%d, conv=%d, node=%u, "
 		       "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", 
 		       lock->ml.type, lock->ml.convert_type, lock->ml.node, 
-		       dlm_get_lock_cookie_node(lock->ml.cookie), 
-		       dlm_get_lock_cookie_seq(lock->ml.cookie), 
+		     dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
+		     dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
 		       list_empty(&lock->ast_list) ? 'y' : 'n',
 		       lock->ast_pending ? 'y' : 'n',
 		       list_empty(&lock->bast_list) ? 'y' : 'n',
@@ -87,8 +105,8 @@ void __dlm_print_one_lock_resource(struct dlm_lock_resource *res)
 		mlog(ML_NOTICE, "    type=%d, conv=%d, node=%u, "
 		       "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", 
 		       lock->ml.type, lock->ml.convert_type, lock->ml.node, 
-		       dlm_get_lock_cookie_node(lock->ml.cookie), 
-		       dlm_get_lock_cookie_seq(lock->ml.cookie), 
+		     dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
+		     dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
 		       list_empty(&lock->ast_list) ? 'y' : 'n',
 		       lock->ast_pending ? 'y' : 'n',
 		       list_empty(&lock->bast_list) ? 'y' : 'n',
@@ -102,8 +120,8 @@ void __dlm_print_one_lock_resource(struct dlm_lock_resource *res)
 		mlog(ML_NOTICE, "    type=%d, conv=%d, node=%u, "
 		       "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", 
 		       lock->ml.type, lock->ml.convert_type, lock->ml.node, 
-		       dlm_get_lock_cookie_node(lock->ml.cookie), 
-		       dlm_get_lock_cookie_seq(lock->ml.cookie), 
+		     dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
+		     dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
 		       list_empty(&lock->ast_list) ? 'y' : 'n',
 		       lock->ast_pending ? 'y' : 'n',
 		       list_empty(&lock->bast_list) ? 'y' : 'n',
diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index f0b25f2..6087c47 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -48,6 +48,36 @@
 #define MLOG_MASK_PREFIX (ML_DLM|ML_DLM_DOMAIN)
 #include "cluster/masklog.h"
 
+/*
+ * ocfs2 node maps are array of long int, which limits to send them freely
+ * across the wire due to endianness issues. To workaround this, we convert
+ * long ints to byte arrays. Following 3 routines are helper functions to
+ * set/test/copy bits within those array of bytes
+ */
+static inline void byte_set_bit(u8 nr, u8 map[])
+{
+	map[nr >> 3] |= (1UL << (nr & 7));
+}
+
+static inline int byte_test_bit(u8 nr, u8 map[])
+{
+	return ((1UL << (nr & 7)) & (map[nr >> 3])) != 0;
+}
+
+static inline void byte_copymap(u8 dmap[], unsigned long smap[],
+			unsigned int sz)
+{
+	unsigned int nn;
+
+	if (!sz)
+		return;
+
+	memset(dmap, 0, ((sz + 7) >> 3));
+	for (nn = 0 ; nn < sz; nn++)
+		if (test_bit(nn, smap))
+			byte_set_bit(nn, dmap);
+}
+
 static void dlm_free_pagevec(void **vec, int pages)
 {
 	while (pages--)
@@ -95,10 +125,14 @@ static DECLARE_WAIT_QUEUE_HEAD(dlm_domain_events);
 
 #define DLM_DOMAIN_BACKOFF_MS 200
 
-static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data);
-static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data);
-static int dlm_cancel_join_handler(struct o2net_msg *msg, u32 len, void *data);
-static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data);
+static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data,
+				  void **ret_data);
+static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data,
+				     void **ret_data);
+static int dlm_cancel_join_handler(struct o2net_msg *msg, u32 len, void *data,
+				   void **ret_data);
+static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data,
+				   void **ret_data);
 
 static void dlm_unregister_domain_handlers(struct dlm_ctxt *dlm);
 
@@ -125,10 +159,10 @@ void __dlm_insert_lockres(struct dlm_ctxt *dlm,
 	hlist_add_head(&res->hash_node, bucket);
 }
 
-struct dlm_lock_resource * __dlm_lookup_lockres(struct dlm_ctxt *dlm,
-						const char *name,
-						unsigned int len,
-						unsigned int hash)
+struct dlm_lock_resource * __dlm_lookup_lockres_full(struct dlm_ctxt *dlm,
+						     const char *name,
+						     unsigned int len,
+						     unsigned int hash)
 {
 	struct hlist_head *bucket;
 	struct hlist_node *list;
@@ -154,6 +188,37 @@ struct dlm_lock_resource * __dlm_lookup_lockres(struct dlm_ctxt *dlm,
 	return NULL;
 }
 
+/* intended to be called by functions which do not care about lock
+ * resources which are being purged (most net _handler functions).
+ * this will return NULL for any lock resource which is found but
+ * currently in the process of dropping its mastery reference.
+ * use __dlm_lookup_lockres_full when you need the lock resource
+ * regardless (e.g. dlm_get_lock_resource) */
+struct dlm_lock_resource * __dlm_lookup_lockres(struct dlm_ctxt *dlm,
+						const char *name,
+						unsigned int len,
+						unsigned int hash)
+{
+	struct dlm_lock_resource *res = NULL;
+
+	mlog_entry("%.*s\n", len, name);
+
+	assert_spin_locked(&dlm->spinlock);
+
+	res = __dlm_lookup_lockres_full(dlm, name, len, hash);
+	if (res) {
+		spin_lock(&res->spinlock);
+		if (res->state & DLM_LOCK_RES_DROPPING_REF) {
+			spin_unlock(&res->spinlock);
+			dlm_lockres_put(res);
+			return NULL;
+		}
+		spin_unlock(&res->spinlock);
+	}
+
+	return res;
+}
+
 struct dlm_lock_resource * dlm_lookup_lockres(struct dlm_ctxt *dlm,
 				    const char *name,
 				    unsigned int len)
@@ -330,43 +395,60 @@ static void dlm_complete_dlm_shutdown(struct dlm_ctxt *dlm)
 	wake_up(&dlm_domain_events);
 }
 
-static void dlm_migrate_all_locks(struct dlm_ctxt *dlm)
+static int dlm_migrate_all_locks(struct dlm_ctxt *dlm)
 {
-	int i;
+	int i, num, n, ret = 0;
 	struct dlm_lock_resource *res;
+	struct hlist_node *iter;
+	struct hlist_head *bucket;
+	int dropped;
 
 	mlog(0, "Migrating locks from domain %s\n", dlm->name);
-restart:
+
+	num = 0;
 	spin_lock(&dlm->spinlock);
 	for (i = 0; i < DLM_HASH_BUCKETS; i++) {
-		while (!hlist_empty(dlm_lockres_hash(dlm, i))) {
-			res = hlist_entry(dlm_lockres_hash(dlm, i)->first,
-					  struct dlm_lock_resource, hash_node);
-			/* need reference when manually grabbing lockres */
+redo_bucket:
+		n = 0;
+		bucket = dlm_lockres_hash(dlm, i);
+		iter = bucket->first;
+		while (iter) {
+			n++;
+			res = hlist_entry(iter, struct dlm_lock_resource,
+					  hash_node);
 			dlm_lockres_get(res);
-			/* this should unhash the lockres
-			 * and exit with dlm->spinlock */
-			mlog(0, "purging res=%p\n", res);
-			if (dlm_lockres_is_dirty(dlm, res)) {
-				/* HACK!  this should absolutely go.
-				 * need to figure out why some empty
-				 * lockreses are still marked dirty */
-				mlog(ML_ERROR, "lockres %.*s dirty!\n",
-				     res->lockname.len, res->lockname.name);
-
-				spin_unlock(&dlm->spinlock);
-				dlm_kick_thread(dlm, res);
-				wait_event(dlm->ast_wq, !dlm_lockres_is_dirty(dlm, res));
-				dlm_lockres_put(res);
-				goto restart;
-			}
-			dlm_purge_lockres(dlm, res);
+			/* migrate, if necessary.  this will drop the dlm
+			 * spinlock and retake it if it does migration. */
+			dropped = dlm_empty_lockres(dlm, res);
+
+			spin_lock(&res->spinlock);
+			__dlm_lockres_calc_usage(dlm, res);
+			iter = res->hash_node.next;
+			spin_unlock(&res->spinlock);
+
 			dlm_lockres_put(res);
+
+			cond_resched_lock(&dlm->spinlock);
+
+			if (dropped)
+				goto redo_bucket;
 		}
+		num += n;
+		mlog(0, "%s: touched %d lockreses in bucket %d "
+		     "(tot=%d)\n", dlm->name, n, i, num);
 	}
 	spin_unlock(&dlm->spinlock);
-
+	wake_up(&dlm->dlm_thread_wq);
+
+	/* let the dlm thread take care of purging, keep scanning until
+	 * nothing remains in the hash */
+	if (num) {
+		mlog(0, "%s: %d lock resources in hash last pass\n",
+		     dlm->name, num);
+		ret = -EAGAIN;
+	}
 	mlog(0, "DONE Migrating locks from domain %s\n", dlm->name);
+	return ret;
 }
 
 static int dlm_no_joining_node(struct dlm_ctxt *dlm)
@@ -418,7 +500,8 @@ static void __dlm_print_nodes(struct dlm_ctxt *dlm)
 	printk("\n");
 }
 
-static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data)
+static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data,
+				   void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	unsigned int node;
@@ -571,7 +654,9 @@ void dlm_unregister_domain(struct dlm_ctxt *dlm)
 		/* We changed dlm state, notify the thread */
 		dlm_kick_thread(dlm, NULL);
 
-		dlm_migrate_all_locks(dlm);
+		while (dlm_migrate_all_locks(dlm)) {
+			mlog(0, "%s: more migration to do\n", dlm->name);
+		}
 		dlm_mark_domain_leaving(dlm);
 		dlm_leave_domain(dlm);
 		dlm_complete_dlm_shutdown(dlm);
@@ -580,11 +665,13 @@ void dlm_unregister_domain(struct dlm_ctxt *dlm)
 }
 EXPORT_SYMBOL_GPL(dlm_unregister_domain);
 
-static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data)
+static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data,
+				  void **ret_data)
 {
 	struct dlm_query_join_request *query;
 	enum dlm_query_join_response response;
 	struct dlm_ctxt *dlm = NULL;
+	u8 nodenum;
 
 	query = (struct dlm_query_join_request *) msg->buf;
 
@@ -608,6 +695,28 @@ static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data)
 
 	spin_lock(&dlm_domain_lock);
 	dlm = __dlm_lookup_domain_full(query->domain, query->name_len);
+	if (!dlm)
+		goto unlock_respond;
+
+	/*
+	 * There is a small window where the joining node may not see the
+	 * node(s) that just left but still part of the cluster. DISALLOW
+	 * join request if joining node has different node map.
+	 */
+	nodenum=0;
+	while (nodenum < O2NM_MAX_NODES) {
+		if (test_bit(nodenum, dlm->domain_map)) {
+			if (!byte_test_bit(nodenum, query->node_map)) {
+				mlog(0, "disallow join as node %u does not "
+				     "have node %u in its nodemap\n",
+				     query->node_idx, nodenum);
+				response = JOIN_DISALLOW;
+				goto unlock_respond;
+			}
+		}
+		nodenum++;
+	}
+
 	/* Once the dlm ctxt is marked as leaving then we don't want
 	 * to be put in someone's domain map. 
 	 * Also, explicitly disallow joining at certain troublesome
@@ -626,15 +735,15 @@ static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data)
 			/* Disallow parallel joins. */
 			response = JOIN_DISALLOW;
 		} else if (dlm->reco.state & DLM_RECO_STATE_ACTIVE) {
-			mlog(ML_NOTICE, "node %u trying to join, but recovery "
+			mlog(0, "node %u trying to join, but recovery "
 			     "is ongoing.\n", bit);
 			response = JOIN_DISALLOW;
 		} else if (test_bit(bit, dlm->recovery_map)) {
-			mlog(ML_NOTICE, "node %u trying to join, but it "
+			mlog(0, "node %u trying to join, but it "
 			     "still needs recovery.\n", bit);
 			response = JOIN_DISALLOW;
 		} else if (test_bit(bit, dlm->domain_map)) {
-			mlog(ML_NOTICE, "node %u trying to join, but it "
+			mlog(0, "node %u trying to join, but it "
 			     "is still in the domain! needs recovery?\n",
 			     bit);
 			response = JOIN_DISALLOW;
@@ -649,6 +758,7 @@ static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data)
 
 		spin_unlock(&dlm->spinlock);
 	}
+unlock_respond:
 	spin_unlock(&dlm_domain_lock);
 
 respond:
@@ -657,7 +767,8 @@ respond:
 	return response;
 }
 
-static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data)
+static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data,
+				     void **ret_data)
 {
 	struct dlm_assert_joined *assert;
 	struct dlm_ctxt *dlm = NULL;
@@ -694,7 +805,8 @@ static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data)
 	return 0;
 }
 
-static int dlm_cancel_join_handler(struct o2net_msg *msg, u32 len, void *data)
+static int dlm_cancel_join_handler(struct o2net_msg *msg, u32 len, void *data,
+				   void **ret_data)
 {
 	struct dlm_cancel_join *cancel;
 	struct dlm_ctxt *dlm = NULL;
@@ -796,6 +908,9 @@ static int dlm_request_join(struct dlm_ctxt *dlm,
 	join_msg.name_len = strlen(dlm->name);
 	memcpy(join_msg.domain, dlm->name, join_msg.name_len);
 
+	/* copy live node map to join message */
+	byte_copymap(join_msg.node_map, dlm->live_nodes_map, O2NM_MAX_NODES);
+
 	status = o2net_send_message(DLM_QUERY_JOIN_MSG, DLM_MOD_KEY, &join_msg,
 				    sizeof(join_msg), node, &retval);
 	if (status < 0 && status != -ENOPROTOOPT) {
@@ -1036,98 +1151,106 @@ static int dlm_register_domain_handlers(struct dlm_ctxt *dlm)
 	status = o2net_register_handler(DLM_MASTER_REQUEST_MSG, dlm->key,
 					sizeof(struct dlm_master_request),
 					dlm_master_request_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_ASSERT_MASTER_MSG, dlm->key,
 					sizeof(struct dlm_assert_master),
 					dlm_assert_master_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, dlm_assert_master_post_handler,
+					&dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_CREATE_LOCK_MSG, dlm->key,
 					sizeof(struct dlm_create_lock),
 					dlm_create_lock_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_CONVERT_LOCK_MSG, dlm->key,
 					DLM_CONVERT_LOCK_MAX_LEN,
 					dlm_convert_lock_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_UNLOCK_LOCK_MSG, dlm->key,
 					DLM_UNLOCK_LOCK_MAX_LEN,
 					dlm_unlock_lock_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_PROXY_AST_MSG, dlm->key,
 					DLM_PROXY_AST_MAX_LEN,
 					dlm_proxy_ast_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_EXIT_DOMAIN_MSG, dlm->key,
 					sizeof(struct dlm_exit_domain),
 					dlm_exit_domain_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
+	if (status)
+		goto bail;
+
+	status = o2net_register_handler(DLM_DEREF_LOCKRES_MSG, dlm->key,
+					sizeof(struct dlm_deref_lockres),
+					dlm_deref_lockres_handler,
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_MIGRATE_REQUEST_MSG, dlm->key,
 					sizeof(struct dlm_migrate_request),
 					dlm_migrate_request_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_MIG_LOCKRES_MSG, dlm->key,
 					DLM_MIG_LOCKRES_MAX_LEN,
 					dlm_mig_lockres_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_MASTER_REQUERY_MSG, dlm->key,
 					sizeof(struct dlm_master_requery),
 					dlm_master_requery_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_LOCK_REQUEST_MSG, dlm->key,
 					sizeof(struct dlm_lock_request),
 					dlm_request_all_locks_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_RECO_DATA_DONE_MSG, dlm->key,
 					sizeof(struct dlm_reco_data_done),
 					dlm_reco_data_done_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_BEGIN_RECO_MSG, dlm->key,
 					sizeof(struct dlm_begin_reco),
 					dlm_begin_reco_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_FINALIZE_RECO_MSG, dlm->key,
 					sizeof(struct dlm_finalize_reco),
 					dlm_finalize_reco_handler,
-					dlm, &dlm->dlm_domain_handlers);
+					dlm, NULL, &dlm->dlm_domain_handlers);
 	if (status)
 		goto bail;
 
@@ -1141,6 +1264,8 @@ bail:
 static int dlm_join_domain(struct dlm_ctxt *dlm)
 {
 	int status;
+	unsigned int backoff;
+	unsigned int total_backoff = 0;
 
 	BUG_ON(!dlm);
 
@@ -1172,18 +1297,27 @@ static int dlm_join_domain(struct dlm_ctxt *dlm)
 	}
 
 	do {
-		unsigned int backoff;
 		status = dlm_try_to_join_domain(dlm);
 
 		/* If we're racing another node to the join, then we
 		 * need to back off temporarily and let them
 		 * complete. */
+#define	DLM_JOIN_TIMEOUT_MSECS	90000
 		if (status == -EAGAIN) {
 			if (signal_pending(current)) {
 				status = -ERESTARTSYS;
 				goto bail;
 			}
 
+			if (total_backoff >
+			    msecs_to_jiffies(DLM_JOIN_TIMEOUT_MSECS)) {
+				status = -ERESTARTSYS;
+				mlog(ML_NOTICE, "Timed out joining dlm domain "
+				     "%s after %u msecs\n", dlm->name,
+				     jiffies_to_msecs(total_backoff));
+				goto bail;
+			}
+
 			/*
 			 * <chip> After you!
 			 * <dale> No, after you!
@@ -1193,6 +1327,7 @@ static int dlm_join_domain(struct dlm_ctxt *dlm)
 			 */
 			backoff = (unsigned int)(jiffies & 0x3);
 			backoff *= DLM_DOMAIN_BACKOFF_MS;
+			total_backoff += backoff;
 			mlog(0, "backoff %d\n", backoff);
 			msleep(backoff);
 		}
@@ -1421,21 +1556,21 @@ static int dlm_register_net_handlers(void)
 	status = o2net_register_handler(DLM_QUERY_JOIN_MSG, DLM_MOD_KEY,
 					sizeof(struct dlm_query_join_request),
 					dlm_query_join_handler,
-					NULL, &dlm_join_handlers);
+					NULL, NULL, &dlm_join_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_ASSERT_JOINED_MSG, DLM_MOD_KEY,
 					sizeof(struct dlm_assert_joined),
 					dlm_assert_joined_handler,
-					NULL, &dlm_join_handlers);
+					NULL, NULL, &dlm_join_handlers);
 	if (status)
 		goto bail;
 
 	status = o2net_register_handler(DLM_CANCEL_JOIN_MSG, DLM_MOD_KEY,
 					sizeof(struct dlm_cancel_join),
 					dlm_cancel_join_handler,
-					NULL, &dlm_join_handlers);
+					NULL, NULL, &dlm_join_handlers);
 
 bail:
 	if (status < 0)
diff --git a/fs/ocfs2/dlm/dlmfs.c b/fs/ocfs2/dlm/dlmfs.c
index b7f0ba9..de952eb 100644
--- a/fs/ocfs2/dlm/dlmfs.c
+++ b/fs/ocfs2/dlm/dlmfs.c
@@ -61,11 +61,11 @@
 #define MLOG_MASK_PREFIX ML_DLMFS
 #include "cluster/masklog.h"
 
-static struct super_operations dlmfs_ops;
-static struct file_operations dlmfs_file_operations;
-static struct inode_operations dlmfs_dir_inode_operations;
-static struct inode_operations dlmfs_root_inode_operations;
-static struct inode_operations dlmfs_file_inode_operations;
+static const struct super_operations dlmfs_ops;
+static const struct file_operations dlmfs_file_operations;
+static const struct inode_operations dlmfs_dir_inode_operations;
+static const struct inode_operations dlmfs_root_inode_operations;
+static const struct inode_operations dlmfs_file_inode_operations;
 static struct kmem_cache *dlmfs_inode_cache;
 
 struct workqueue_struct *user_dlm_worker;
@@ -540,27 +540,27 @@ static int dlmfs_fill_super(struct super_block * sb,
 	return 0;
 }
 
-static struct file_operations dlmfs_file_operations = {
+static const struct file_operations dlmfs_file_operations = {
 	.open		= dlmfs_file_open,
 	.release	= dlmfs_file_release,
 	.read		= dlmfs_file_read,
 	.write		= dlmfs_file_write,
 };
 
-static struct inode_operations dlmfs_dir_inode_operations = {
+static const struct inode_operations dlmfs_dir_inode_operations = {
 	.create		= dlmfs_create,
 	.lookup		= simple_lookup,
 	.unlink		= dlmfs_unlink,
 };
 
 /* this way we can restrict mkdir to only the toplevel of the fs. */
-static struct inode_operations dlmfs_root_inode_operations = {
+static const struct inode_operations dlmfs_root_inode_operations = {
 	.lookup		= simple_lookup,
 	.mkdir		= dlmfs_mkdir,
 	.rmdir		= simple_rmdir,
 };
 
-static struct super_operations dlmfs_ops = {
+static const struct super_operations dlmfs_ops = {
 	.statfs		= simple_statfs,
 	.alloc_inode	= dlmfs_alloc_inode,
 	.destroy_inode	= dlmfs_destroy_inode,
@@ -568,7 +568,7 @@ static struct super_operations dlmfs_ops = {
 	.drop_inode	= generic_delete_inode,
 };
 
-static struct inode_operations dlmfs_file_inode_operations = {
+static const struct inode_operations dlmfs_file_inode_operations = {
 	.getattr	= simple_getattr,
 };
 
diff --git a/fs/ocfs2/dlm/dlmlock.c b/fs/ocfs2/dlm/dlmlock.c
index e5ca3db..52578d9 100644
--- a/fs/ocfs2/dlm/dlmlock.c
+++ b/fs/ocfs2/dlm/dlmlock.c
@@ -163,6 +163,10 @@ static enum dlm_status dlmlock_master(struct dlm_ctxt *dlm,
 			kick_thread = 1;
 		}
 	}
+	/* reduce the inflight count, this may result in the lockres
+	 * being purged below during calc_usage */
+	if (lock->ml.node == dlm->node_num)
+		dlm_lockres_drop_inflight_ref(dlm, res);
 
 	spin_unlock(&res->spinlock);
 	wake_up(&res->wq);
@@ -437,7 +441,8 @@ struct dlm_lock * dlm_new_lock(int type, u8 node, u64 cookie,
  *   held on exit:  none
  * returns: DLM_NORMAL, DLM_SYSERR, DLM_IVLOCKID, DLM_NOTQUEUED
  */
-int dlm_create_lock_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_create_lock_handler(struct o2net_msg *msg, u32 len, void *data,
+			    void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	struct dlm_create_lock *create = (struct dlm_create_lock *)msg->buf;
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 0ad8720..77e4e61 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -99,9 +99,10 @@ static void dlm_mle_node_up(struct dlm_ctxt *dlm,
 			    int idx);
 
 static void dlm_assert_master_worker(struct dlm_work_item *item, void *data);
-static int dlm_do_assert_master(struct dlm_ctxt *dlm, const char *lockname,
-				unsigned int namelen, void *nodemap,
-				u32 flags);
+static int dlm_do_assert_master(struct dlm_ctxt *dlm,
+				struct dlm_lock_resource *res,
+				void *nodemap, u32 flags);
+static void dlm_deref_lockres_worker(struct dlm_work_item *item, void *data);
 
 static inline int dlm_mle_equal(struct dlm_ctxt *dlm,
 				struct dlm_master_list_entry *mle,
@@ -237,7 +238,8 @@ static int dlm_find_mle(struct dlm_ctxt *dlm,
 			struct dlm_master_list_entry **mle,
 			char *name, unsigned int namelen);
 
-static int dlm_do_master_request(struct dlm_master_list_entry *mle, int to);
+static int dlm_do_master_request(struct dlm_lock_resource *res,
+				 struct dlm_master_list_entry *mle, int to);
 
 
 static int dlm_wait_for_lock_mastery(struct dlm_ctxt *dlm,
@@ -687,6 +689,7 @@ static void dlm_init_lockres(struct dlm_ctxt *dlm,
 	INIT_LIST_HEAD(&res->purge);
 	atomic_set(&res->asts_reserved, 0);
 	res->migration_pending = 0;
+	res->inflight_locks = 0;
 
 	kref_init(&res->refs);
 
@@ -700,6 +703,7 @@ static void dlm_init_lockres(struct dlm_ctxt *dlm,
 	res->last_used = 0;
 
 	memset(res->lvb, 0, DLM_LVB_LEN);
+	memset(res->refmap, 0, sizeof(res->refmap));
 }
 
 struct dlm_lock_resource *dlm_new_lockres(struct dlm_ctxt *dlm,
@@ -722,6 +726,42 @@ struct dlm_lock_resource *dlm_new_lockres(struct dlm_ctxt *dlm,
 	return res;
 }
 
+void __dlm_lockres_grab_inflight_ref(struct dlm_ctxt *dlm,
+				   struct dlm_lock_resource *res,
+				   int new_lockres,
+				   const char *file,
+				   int line)
+{
+	if (!new_lockres)
+		assert_spin_locked(&res->spinlock);
+
+	if (!test_bit(dlm->node_num, res->refmap)) {
+		BUG_ON(res->inflight_locks != 0);
+		dlm_lockres_set_refmap_bit(dlm->node_num, res);
+	}
+	res->inflight_locks++;
+	mlog(0, "%s:%.*s: inflight++: now %u\n",
+	     dlm->name, res->lockname.len, res->lockname.name,
+	     res->inflight_locks);
+}
+
+void __dlm_lockres_drop_inflight_ref(struct dlm_ctxt *dlm,
+				   struct dlm_lock_resource *res,
+				   const char *file,
+				   int line)
+{
+	assert_spin_locked(&res->spinlock);
+
+	BUG_ON(res->inflight_locks == 0);
+	res->inflight_locks--;
+	mlog(0, "%s:%.*s: inflight--: now %u\n",
+	     dlm->name, res->lockname.len, res->lockname.name,
+	     res->inflight_locks);
+	if (res->inflight_locks == 0)
+		dlm_lockres_clear_refmap_bit(dlm->node_num, res);
+	wake_up(&res->wq);
+}
+
 /*
  * lookup a lock resource by name.
  * may already exist in the hashtable.
@@ -752,6 +792,7 @@ struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
 	unsigned int hash;
 	int tries = 0;
 	int bit, wait_on_recovery = 0;
+	int drop_inflight_if_nonlocal = 0;
 
 	BUG_ON(!lockid);
 
@@ -761,9 +802,30 @@ struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
 
 lookup:
 	spin_lock(&dlm->spinlock);
-	tmpres = __dlm_lookup_lockres(dlm, lockid, namelen, hash);
+	tmpres = __dlm_lookup_lockres_full(dlm, lockid, namelen, hash);
 	if (tmpres) {
+		int dropping_ref = 0;
+
+		spin_lock(&tmpres->spinlock);
+		if (tmpres->owner == dlm->node_num) {
+			BUG_ON(tmpres->state & DLM_LOCK_RES_DROPPING_REF);
+			dlm_lockres_grab_inflight_ref(dlm, tmpres);
+		} else if (tmpres->state & DLM_LOCK_RES_DROPPING_REF)
+			dropping_ref = 1;
+		spin_unlock(&tmpres->spinlock);
 		spin_unlock(&dlm->spinlock);
+
+		/* wait until done messaging the master, drop our ref to allow
+		 * the lockres to be purged, start over. */
+		if (dropping_ref) {
+			spin_lock(&tmpres->spinlock);
+			__dlm_wait_on_lockres_flags(tmpres, DLM_LOCK_RES_DROPPING_REF);
+			spin_unlock(&tmpres->spinlock);
+			dlm_lockres_put(tmpres);
+			tmpres = NULL;
+			goto lookup;
+		}
+
 		mlog(0, "found in hash!\n");
 		if (res)
 			dlm_lockres_put(res);
@@ -793,6 +855,7 @@ lookup:
 		spin_lock(&res->spinlock);
 		dlm_change_lockres_owner(dlm, res, dlm->node_num);
 		__dlm_insert_lockres(dlm, res);
+		dlm_lockres_grab_inflight_ref(dlm, res);
 		spin_unlock(&res->spinlock);
 		spin_unlock(&dlm->spinlock);
 		/* lockres still marked IN_PROGRESS */
@@ -805,29 +868,40 @@ lookup:
 	/* if we found a block, wait for lock to be mastered by another node */
 	blocked = dlm_find_mle(dlm, &mle, (char *)lockid, namelen);
 	if (blocked) {
+		int mig;
 		if (mle->type == DLM_MLE_MASTER) {
 			mlog(ML_ERROR, "master entry for nonexistent lock!\n");
 			BUG();
-		} else if (mle->type == DLM_MLE_MIGRATION) {
-			/* migration is in progress! */
-			/* the good news is that we now know the
-			 * "current" master (mle->master). */
-
+		}
+		mig = (mle->type == DLM_MLE_MIGRATION);
+		/* if there is a migration in progress, let the migration
+		 * finish before continuing.  we can wait for the absence
+		 * of the MIGRATION mle: either the migrate finished or
+		 * one of the nodes died and the mle was cleaned up.
+		 * if there is a BLOCK here, but it already has a master
+		 * set, we are too late.  the master does not have a ref
+		 * for us in the refmap.  detach the mle and drop it.
+		 * either way, go back to the top and start over. */
+		if (mig || mle->master != O2NM_MAX_NODES) {
+			BUG_ON(mig && mle->master == dlm->node_num);
+			/* we arrived too late.  the master does not
+			 * have a ref for us. retry. */
+			mlog(0, "%s:%.*s: late on %s\n",
+			     dlm->name, namelen, lockid,
+			     mig ?  "MIGRATION" : "BLOCK");
 			spin_unlock(&dlm->master_lock);
-			assert_spin_locked(&dlm->spinlock);
-
-			/* set the lockres owner and hash it */
-			spin_lock(&res->spinlock);
-			dlm_set_lockres_owner(dlm, res, mle->master);
-			__dlm_insert_lockres(dlm, res);
-			spin_unlock(&res->spinlock);
 			spin_unlock(&dlm->spinlock);
 
 			/* master is known, detach */
-			dlm_mle_detach_hb_events(dlm, mle);
+			if (!mig)
+				dlm_mle_detach_hb_events(dlm, mle);
 			dlm_put_mle(mle);
 			mle = NULL;
-			goto wake_waiters;
+			/* this is lame, but we cant wait on either
+			 * the mle or lockres waitqueue here */
+			if (mig)
+				msleep(100);
+			goto lookup;
 		}
 	} else {
 		/* go ahead and try to master lock on this node */
@@ -858,6 +932,13 @@ lookup:
 
 	/* finally add the lockres to its hash bucket */
 	__dlm_insert_lockres(dlm, res);
+	/* since this lockres is new it doesnt not require the spinlock */
+	dlm_lockres_grab_inflight_ref_new(dlm, res);
+
+	/* if this node does not become the master make sure to drop
+	 * this inflight reference below */
+	drop_inflight_if_nonlocal = 1;
+
 	/* get an extra ref on the mle in case this is a BLOCK
 	 * if so, the creator of the BLOCK may try to put the last
 	 * ref at this time in the assert master handler, so we
@@ -910,7 +991,7 @@ redo_request:
 	ret = -EINVAL;
 	dlm_node_iter_init(mle->vote_map, &iter);
 	while ((nodenum = dlm_node_iter_next(&iter)) >= 0) {
-		ret = dlm_do_master_request(mle, nodenum);
+		ret = dlm_do_master_request(res, mle, nodenum);
 		if (ret < 0)
 			mlog_errno(ret);
 		if (mle->master != O2NM_MAX_NODES) {
@@ -960,6 +1041,8 @@ wait:
 
 wake_waiters:
 	spin_lock(&res->spinlock);
+	if (res->owner != dlm->node_num && drop_inflight_if_nonlocal)
+		dlm_lockres_drop_inflight_ref(dlm, res);
 	res->state &= ~DLM_LOCK_RES_IN_PROGRESS;
 	spin_unlock(&res->spinlock);
 	wake_up(&res->wq);
@@ -998,7 +1081,7 @@ recheck:
 		/* this will cause the master to re-assert across
 		 * the whole cluster, freeing up mles */
 		if (res->owner != dlm->node_num) {
-			ret = dlm_do_master_request(mle, res->owner);
+			ret = dlm_do_master_request(res, mle, res->owner);
 			if (ret < 0) {
 				/* give recovery a chance to run */
 				mlog(ML_ERROR, "link to %u went down?: %d\n", res->owner, ret);
@@ -1062,6 +1145,8 @@ recheck:
 			 	 * now tell other nodes that I am
 				 * mastering this. */
 				mle->master = dlm->node_num;
+				/* ref was grabbed in get_lock_resource
+				 * will be dropped in dlmlock_master */
 				assert = 1;
 				sleep = 0;
 			}
@@ -1087,7 +1172,8 @@ recheck:
 					 (atomic_read(&mle->woken) == 1),
 					 timeo);
 		if (res->owner == O2NM_MAX_NODES) {
-			mlog(0, "waiting again\n");
+			mlog(0, "%s:%.*s: waiting again\n", dlm->name,
+			     res->lockname.len, res->lockname.name);
 			goto recheck;
 		}
 		mlog(0, "done waiting, master is %u\n", res->owner);
@@ -1100,8 +1186,7 @@ recheck:
 		m = dlm->node_num;
 		mlog(0, "about to master %.*s here, this=%u\n",
 		     res->lockname.len, res->lockname.name, m);
-		ret = dlm_do_assert_master(dlm, res->lockname.name,
-					   res->lockname.len, mle->vote_map, 0);
+		ret = dlm_do_assert_master(dlm, res, mle->vote_map, 0);
 		if (ret) {
 			/* This is a failure in the network path,
 			 * not in the response to the assert_master
@@ -1117,6 +1202,8 @@ recheck:
 
 	/* set the lockres owner */
 	spin_lock(&res->spinlock);
+	/* mastery reference obtained either during
+	 * assert_master_handler or in get_lock_resource */
 	dlm_change_lockres_owner(dlm, res, m);
 	spin_unlock(&res->spinlock);
 
@@ -1283,7 +1370,8 @@ static int dlm_restart_lock_mastery(struct dlm_ctxt *dlm,
  *
  */
 
-static int dlm_do_master_request(struct dlm_master_list_entry *mle, int to)
+static int dlm_do_master_request(struct dlm_lock_resource *res,
+				 struct dlm_master_list_entry *mle, int to)
 {
 	struct dlm_ctxt *dlm = mle->dlm;
 	struct dlm_master_request request;
@@ -1339,6 +1427,9 @@ again:
 		case DLM_MASTER_RESP_YES:
 			set_bit(to, mle->response_map);
 			mlog(0, "node %u is the master, response=YES\n", to);
+			mlog(0, "%s:%.*s: master node %u now knows I have a "
+			     "reference\n", dlm->name, res->lockname.len,
+			     res->lockname.name, to);
 			mle->master = to;
 			break;
 		case DLM_MASTER_RESP_NO:
@@ -1379,7 +1470,8 @@ out:
  *
  * if possible, TRIM THIS DOWN!!!
  */
-int dlm_master_request_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_master_request_handler(struct o2net_msg *msg, u32 len, void *data,
+			       void **ret_data)
 {
 	u8 response = DLM_MASTER_RESP_MAYBE;
 	struct dlm_ctxt *dlm = data;
@@ -1417,10 +1509,11 @@ way_up_top:
 
 		/* take care of the easy cases up front */
 		spin_lock(&res->spinlock);
-		if (res->state & DLM_LOCK_RES_RECOVERING) {
+		if (res->state & (DLM_LOCK_RES_RECOVERING|
+				  DLM_LOCK_RES_MIGRATING)) {
 			spin_unlock(&res->spinlock);
 			mlog(0, "returning DLM_MASTER_RESP_ERROR since res is "
-			     "being recovered\n");
+			     "being recovered/migrated\n");
 			response = DLM_MASTER_RESP_ERROR;
 			if (mle)
 				kmem_cache_free(dlm_mle_cache, mle);
@@ -1428,8 +1521,10 @@ way_up_top:
 		}
 
 		if (res->owner == dlm->node_num) {
+			mlog(0, "%s:%.*s: setting bit %u in refmap\n",
+			     dlm->name, namelen, name, request->node_idx);
+			dlm_lockres_set_refmap_bit(request->node_idx, res);
 			spin_unlock(&res->spinlock);
-			// mlog(0, "this node is the master\n");
 			response = DLM_MASTER_RESP_YES;
 			if (mle)
 				kmem_cache_free(dlm_mle_cache, mle);
@@ -1477,7 +1572,6 @@ way_up_top:
 			mlog(0, "node %u is master, but trying to migrate to "
 			     "node %u.\n", tmpmle->master, tmpmle->new_master);
 			if (tmpmle->master == dlm->node_num) {
-				response = DLM_MASTER_RESP_YES;
 				mlog(ML_ERROR, "no owner on lockres, but this "
 				     "node is trying to migrate it to %u?!\n",
 				     tmpmle->new_master);
@@ -1494,6 +1588,10 @@ way_up_top:
 				 * go back and clean the mles on any
 				 * other nodes */
 				dispatch_assert = 1;
+				dlm_lockres_set_refmap_bit(request->node_idx, res);
+				mlog(0, "%s:%.*s: setting bit %u in refmap\n",
+				     dlm->name, namelen, name,
+				     request->node_idx);
 			} else
 				response = DLM_MASTER_RESP_NO;
 		} else {
@@ -1607,17 +1705,24 @@ send_response:
  * can periodically run all locks owned by this node
  * and re-assert across the cluster...
  */
-static int dlm_do_assert_master(struct dlm_ctxt *dlm, const char *lockname,
-				unsigned int namelen, void *nodemap,
-				u32 flags)
+int dlm_do_assert_master(struct dlm_ctxt *dlm,
+			 struct dlm_lock_resource *res,
+			 void *nodemap, u32 flags)
 {
 	struct dlm_assert_master assert;
 	int to, tmpret;
 	struct dlm_node_iter iter;
 	int ret = 0;
 	int reassert;
+	const char *lockname = res->lockname.name;
+	unsigned int namelen = res->lockname.len;
 
 	BUG_ON(namelen > O2NM_MAX_NAME_LEN);
+
+	spin_lock(&res->spinlock);
+	res->state |= DLM_LOCK_RES_SETREF_INPROG;
+	spin_unlock(&res->spinlock);
+
 again:
 	reassert = 0;
 
@@ -1647,6 +1752,7 @@ again:
 			mlog(0, "link to %d went down!\n", to);
 			/* any nonzero status return will do */
 			ret = tmpret;
+			r = 0;
 		} else if (r < 0) {
 			/* ok, something horribly messed.  kill thyself. */
 			mlog(ML_ERROR,"during assert master of %.*s to %u, "
@@ -1661,17 +1767,39 @@ again:
 			spin_unlock(&dlm->master_lock);
 			spin_unlock(&dlm->spinlock);
 			BUG();
-		} else if (r == EAGAIN) {
+		}
+
+		if (r & DLM_ASSERT_RESPONSE_REASSERT &&
+		    !(r & DLM_ASSERT_RESPONSE_MASTERY_REF)) {
+				mlog(ML_ERROR, "%.*s: very strange, "
+				     "master MLE but no lockres on %u\n",
+				     namelen, lockname, to);
+		}
+
+		if (r & DLM_ASSERT_RESPONSE_REASSERT) {
 			mlog(0, "%.*s: node %u create mles on other "
 			     "nodes and requests a re-assert\n", 
 			     namelen, lockname, to);
 			reassert = 1;
 		}
+		if (r & DLM_ASSERT_RESPONSE_MASTERY_REF) {
+			mlog(0, "%.*s: node %u has a reference to this "
+			     "lockres, set the bit in the refmap\n",
+			     namelen, lockname, to);
+			spin_lock(&res->spinlock);
+			dlm_lockres_set_refmap_bit(to, res);
+			spin_unlock(&res->spinlock);
+		}
 	}
 
 	if (reassert)
 		goto again;
 
+	spin_lock(&res->spinlock);
+	res->state &= ~DLM_LOCK_RES_SETREF_INPROG;
+	spin_unlock(&res->spinlock);
+	wake_up(&res->wq);
+
 	return ret;
 }
 
@@ -1684,7 +1812,8 @@ again:
  *
  * if possible, TRIM THIS DOWN!!!
  */
-int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data,
+			      void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	struct dlm_master_list_entry *mle = NULL;
@@ -1693,7 +1822,7 @@ int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data)
 	char *name;
 	unsigned int namelen, hash;
 	u32 flags;
-	int master_request = 0;
+	int master_request = 0, have_lockres_ref = 0;
 	int ret = 0;
 
 	if (!dlm_grab(dlm))
@@ -1851,6 +1980,7 @@ ok:
 		spin_unlock(&mle->spinlock);
 
 		if (res) {
+			int wake = 0;
 			spin_lock(&res->spinlock);
 			if (mle->type == DLM_MLE_MIGRATION) {
 				mlog(0, "finishing off migration of lockres %.*s, "
@@ -1858,12 +1988,16 @@ ok:
 			       		res->lockname.len, res->lockname.name,
 			       		dlm->node_num, mle->new_master);
 				res->state &= ~DLM_LOCK_RES_MIGRATING;
+				wake = 1;
 				dlm_change_lockres_owner(dlm, res, mle->new_master);
 				BUG_ON(res->state & DLM_LOCK_RES_DIRTY);
 			} else {
 				dlm_change_lockres_owner(dlm, res, mle->master);
 			}
 			spin_unlock(&res->spinlock);
+			have_lockres_ref = 1;
+			if (wake)
+				wake_up(&res->wq);
 		}
 
 		/* master is known, detach if not already detached.
@@ -1913,12 +2047,28 @@ ok:
 
 done:
 	ret = 0;
-	if (res)
-		dlm_lockres_put(res);
+	if (res) {
+		spin_lock(&res->spinlock);
+		res->state |= DLM_LOCK_RES_SETREF_INPROG;
+		spin_unlock(&res->spinlock);
+		*ret_data = (void *)res;
+	}
 	dlm_put(dlm);
 	if (master_request) {
 		mlog(0, "need to tell master to reassert\n");
-		ret = EAGAIN;  // positive. negative would shoot down the node.
+		/* positive. negative would shoot down the node. */
+		ret |= DLM_ASSERT_RESPONSE_REASSERT;
+		if (!have_lockres_ref) {
+			mlog(ML_ERROR, "strange, got assert from %u, MASTER "
+			     "mle present here for %s:%.*s, but no lockres!\n",
+			     assert->node_idx, dlm->name, namelen, name);
+		}
+	}
+	if (have_lockres_ref) {
+		/* let the master know we have a reference to the lockres */
+		ret |= DLM_ASSERT_RESPONSE_MASTERY_REF;
+		mlog(0, "%s:%.*s: got assert from %u, need a ref\n",
+		     dlm->name, namelen, name, assert->node_idx);
 	}
 	return ret;
 
@@ -1929,11 +2079,25 @@ kill:
 	__dlm_print_one_lock_resource(res);
 	spin_unlock(&res->spinlock);
 	spin_unlock(&dlm->spinlock);
-	dlm_lockres_put(res);
+	*ret_data = (void *)res; 
 	dlm_put(dlm);
 	return -EINVAL;
 }
 
+void dlm_assert_master_post_handler(int status, void *data, void *ret_data)
+{
+	struct dlm_lock_resource *res = (struct dlm_lock_resource *)ret_data;
+
+	if (ret_data) {
+		spin_lock(&res->spinlock);
+		res->state &= ~DLM_LOCK_RES_SETREF_INPROG;
+		spin_unlock(&res->spinlock);
+		wake_up(&res->wq);
+		dlm_lockres_put(res);
+	}
+	return;
+}
+
 int dlm_dispatch_assert_master(struct dlm_ctxt *dlm,
 			       struct dlm_lock_resource *res,
 			       int ignore_higher, u8 request_from, u32 flags)
@@ -2023,9 +2187,7 @@ static void dlm_assert_master_worker(struct dlm_work_item *item, void *data)
 	 * even if one or more nodes die */
 	mlog(0, "worker about to master %.*s here, this=%u\n",
 		     res->lockname.len, res->lockname.name, dlm->node_num);
-	ret = dlm_do_assert_master(dlm, res->lockname.name,
-				   res->lockname.len,
-				   nodemap, flags);
+	ret = dlm_do_assert_master(dlm, res, nodemap, flags);
 	if (ret < 0) {
 		/* no need to restart, we are done */
 		if (!dlm_is_host_down(ret))
@@ -2097,14 +2259,180 @@ static int dlm_pre_master_reco_lockres(struct dlm_ctxt *dlm,
 	return ret;
 }
 
+/*
+ * DLM_DEREF_LOCKRES_MSG
+ */
+
+int dlm_drop_lockres_ref(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
+{
+	struct dlm_deref_lockres deref;
+	int ret = 0, r;
+	const char *lockname;
+	unsigned int namelen;
+
+	lockname = res->lockname.name;
+	namelen = res->lockname.len;
+	BUG_ON(namelen > O2NM_MAX_NAME_LEN);
+
+	mlog(0, "%s:%.*s: sending deref to %d\n",
+	     dlm->name, namelen, lockname, res->owner);
+	memset(&deref, 0, sizeof(deref));
+	deref.node_idx = dlm->node_num;
+	deref.namelen = namelen;
+	memcpy(deref.name, lockname, namelen);
+
+	ret = o2net_send_message(DLM_DEREF_LOCKRES_MSG, dlm->key,
+				 &deref, sizeof(deref), res->owner, &r);
+	if (ret < 0)
+		mlog_errno(ret);
+	else if (r < 0) {
+		/* BAD.  other node says I did not have a ref. */
+		mlog(ML_ERROR,"while dropping ref on %s:%.*s "
+		    "(master=%u) got %d.\n", dlm->name, namelen,
+		    lockname, res->owner, r);
+		dlm_print_one_lock_resource(res);
+		BUG();
+	}
+	return ret;
+}
+
+int dlm_deref_lockres_handler(struct o2net_msg *msg, u32 len, void *data,
+			      void **ret_data)
+{
+	struct dlm_ctxt *dlm = data;
+	struct dlm_deref_lockres *deref = (struct dlm_deref_lockres *)msg->buf;
+	struct dlm_lock_resource *res = NULL;
+	char *name;
+	unsigned int namelen;
+	int ret = -EINVAL;
+	u8 node;
+	unsigned int hash;
+	struct dlm_work_item *item;
+	int cleared = 0;
+	int dispatch = 0;
+
+	if (!dlm_grab(dlm))
+		return 0;
+
+	name = deref->name;
+	namelen = deref->namelen;
+	node = deref->node_idx;
+
+	if (namelen > DLM_LOCKID_NAME_MAX) {
+		mlog(ML_ERROR, "Invalid name length!");
+		goto done;
+	}
+	if (deref->node_idx >= O2NM_MAX_NODES) {
+		mlog(ML_ERROR, "Invalid node number: %u\n", node);
+		goto done;
+	}
+
+	hash = dlm_lockid_hash(name, namelen);
+
+	spin_lock(&dlm->spinlock);
+	res = __dlm_lookup_lockres_full(dlm, name, namelen, hash);
+	if (!res) {
+		spin_unlock(&dlm->spinlock);
+		mlog(ML_ERROR, "%s:%.*s: bad lockres name\n",
+		     dlm->name, namelen, name);
+		goto done;
+	}
+	spin_unlock(&dlm->spinlock);
+
+	spin_lock(&res->spinlock);
+	if (res->state & DLM_LOCK_RES_SETREF_INPROG)
+		dispatch = 1;
+	else {
+		BUG_ON(res->state & DLM_LOCK_RES_DROPPING_REF);
+		if (test_bit(node, res->refmap)) {
+			dlm_lockres_clear_refmap_bit(node, res);
+			cleared = 1;
+		}
+	}
+	spin_unlock(&res->spinlock);
+
+	if (!dispatch) {
+		if (cleared)
+			dlm_lockres_calc_usage(dlm, res);
+		else {
+			mlog(ML_ERROR, "%s:%.*s: node %u trying to drop ref "
+		     	"but it is already dropped!\n", dlm->name,
+		     	res->lockname.len, res->lockname.name, node);
+			__dlm_print_one_lock_resource(res);
+		}
+		ret = 0;
+		goto done;
+	}
+
+	item = kzalloc(sizeof(*item), GFP_NOFS);
+	if (!item) {
+		ret = -ENOMEM;
+		mlog_errno(ret);
+		goto done;
+	}
+
+	dlm_init_work_item(dlm, item, dlm_deref_lockres_worker, NULL);
+	item->u.dl.deref_res = res;
+	item->u.dl.deref_node = node;
+
+	spin_lock(&dlm->work_lock);
+	list_add_tail(&item->list, &dlm->work_list);
+	spin_unlock(&dlm->work_lock);
+
+	queue_work(dlm->dlm_worker, &dlm->dispatched_work);
+	return 0;
+
+done:
+	if (res)
+		dlm_lockres_put(res);
+	dlm_put(dlm);
+
+	return ret;
+}
+
+static void dlm_deref_lockres_worker(struct dlm_work_item *item, void *data)
+{
+	struct dlm_ctxt *dlm;
+	struct dlm_lock_resource *res;
+	u8 node;
+	u8 cleared = 0;
+
+	dlm = item->dlm;
+	res = item->u.dl.deref_res;
+	node = item->u.dl.deref_node;
+
+	spin_lock(&res->spinlock);
+	BUG_ON(res->state & DLM_LOCK_RES_DROPPING_REF);
+	if (test_bit(node, res->refmap)) {
+		__dlm_wait_on_lockres_flags(res, DLM_LOCK_RES_SETREF_INPROG);
+		dlm_lockres_clear_refmap_bit(node, res);
+		cleared = 1;
+	}
+	spin_unlock(&res->spinlock);
+
+	if (cleared) {
+		mlog(0, "%s:%.*s node %u ref dropped in dispatch\n",
+		     dlm->name, res->lockname.len, res->lockname.name, node);
+		dlm_lockres_calc_usage(dlm, res);
+	} else {
+		mlog(ML_ERROR, "%s:%.*s: node %u trying to drop ref "
+		     "but it is already dropped!\n", dlm->name,
+		     res->lockname.len, res->lockname.name, node);
+		__dlm_print_one_lock_resource(res);
+	}
+
+	dlm_lockres_put(res);
+}
+
 
 /*
  * DLM_MIGRATE_LOCKRES
  */
 
 
-int dlm_migrate_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
-			u8 target)
+static int dlm_migrate_lockres(struct dlm_ctxt *dlm,
+			       struct dlm_lock_resource *res,
+			       u8 target)
 {
 	struct dlm_master_list_entry *mle = NULL;
 	struct dlm_master_list_entry *oldmle = NULL;
@@ -2116,7 +2444,7 @@ int dlm_migrate_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 	struct list_head *queue, *iter;
 	int i;
 	struct dlm_lock *lock;
-	int empty = 1;
+	int empty = 1, wake = 0;
 
 	if (!dlm_grab(dlm))
 		return -EINVAL;
@@ -2241,6 +2569,7 @@ int dlm_migrate_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 		     res->lockname.name, target);
 		spin_lock(&res->spinlock);
 		res->state &= ~DLM_LOCK_RES_MIGRATING;
+		wake = 1;
 		spin_unlock(&res->spinlock);
 		ret = -EINVAL;
 	}
@@ -2268,6 +2597,9 @@ fail:
 	 * the lockres
 	 */
 
+	/* now that remote nodes are spinning on the MIGRATING flag,
+	 * ensure that all assert_master work is flushed. */
+	flush_workqueue(dlm->dlm_worker);
 
 	/* get an extra reference on the mle.
 	 * otherwise the assert_master from the new
@@ -2296,6 +2628,7 @@ fail:
 		dlm_put_mle_inuse(mle);
 		spin_lock(&res->spinlock);
 		res->state &= ~DLM_LOCK_RES_MIGRATING;
+		wake = 1;
 		spin_unlock(&res->spinlock);
 		goto leave;
 	}
@@ -2322,7 +2655,8 @@ fail:
 			    res->owner == target)
 				break;
 
-			mlog(0, "timed out during migration\n");
+			mlog(0, "%s:%.*s: timed out during migration\n",
+			     dlm->name, res->lockname.len, res->lockname.name);
 			/* avoid hang during shutdown when migrating lockres 
 			 * to a node which also goes down */
 			if (dlm_is_node_dead(dlm, target)) {
@@ -2330,20 +2664,20 @@ fail:
 				     "target %u is no longer up, restarting\n",
 				     dlm->name, res->lockname.len,
 				     res->lockname.name, target);
-				ret = -ERESTARTSYS;
+				ret = -EINVAL;
+				/* migration failed, detach and clean up mle */
+				dlm_mle_detach_hb_events(dlm, mle);
+				dlm_put_mle(mle);
+				dlm_put_mle_inuse(mle);
+				spin_lock(&res->spinlock);
+				res->state &= ~DLM_LOCK_RES_MIGRATING;
+				wake = 1;
+				spin_unlock(&res->spinlock);
+				goto leave;
 			}
-		}
-		if (ret == -ERESTARTSYS) {
-			/* migration failed, detach and clean up mle */
-			dlm_mle_detach_hb_events(dlm, mle);
-			dlm_put_mle(mle);
-			dlm_put_mle_inuse(mle);
-			spin_lock(&res->spinlock);
-			res->state &= ~DLM_LOCK_RES_MIGRATING;
-			spin_unlock(&res->spinlock);
-			goto leave;
-		}
-		/* TODO: if node died: stop, clean up, return error */
+		} else
+			mlog(0, "%s:%.*s: caught signal during migration\n",
+			     dlm->name, res->lockname.len, res->lockname.name);
 	}
 
 	/* all done, set the owner, clear the flag */
@@ -2366,6 +2700,11 @@ leave:
 	if (ret < 0)
 		dlm_kick_thread(dlm, res);
 
+	/* wake up waiters if the MIGRATING flag got set
+	 * but migration failed */
+	if (wake)
+		wake_up(&res->wq);
+
 	/* TODO: cleanup */
 	if (mres)
 		free_page((unsigned long)mres);
@@ -2376,6 +2715,53 @@ leave:
 	return ret;
 }
 
+#define DLM_MIGRATION_RETRY_MS  100
+
+/* Should be called only after beginning the domain leave process.
+ * There should not be any remaining locks on nonlocal lock resources,
+ * and there should be no local locks left on locally mastered resources.
+ *
+ * Called with the dlm spinlock held, may drop it to do migration, but
+ * will re-acquire before exit.
+ *
+ * Returns: 1 if dlm->spinlock was dropped/retaken, 0 if never dropped */
+int dlm_empty_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
+{
+	int ret;
+	int lock_dropped = 0;
+
+	if (res->owner != dlm->node_num) {
+		if (!__dlm_lockres_unused(res)) {
+			mlog(ML_ERROR, "%s:%.*s: this node is not master, "
+			     "trying to free this but locks remain\n",
+			     dlm->name, res->lockname.len, res->lockname.name);
+		}
+		goto leave;
+	}
+
+	/* Wheee! Migrate lockres here! Will sleep so drop spinlock. */
+	spin_unlock(&dlm->spinlock);
+	lock_dropped = 1;
+	while (1) {
+		ret = dlm_migrate_lockres(dlm, res, O2NM_MAX_NODES);
+		if (ret >= 0)
+			break;
+		if (ret == -ENOTEMPTY) {
+			mlog(ML_ERROR, "lockres %.*s still has local locks!\n",
+		     		res->lockname.len, res->lockname.name);
+			BUG();
+		}
+
+		mlog(0, "lockres %.*s: migrate failed, "
+		     "retrying\n", res->lockname.len,
+		     res->lockname.name);
+		msleep(DLM_MIGRATION_RETRY_MS);
+	}
+	spin_lock(&dlm->spinlock);
+leave:
+	return lock_dropped;
+}
+
 int dlm_lock_basts_flushed(struct dlm_ctxt *dlm, struct dlm_lock *lock)
 {
 	int ret;
@@ -2405,7 +2791,8 @@ static int dlm_migration_can_proceed(struct dlm_ctxt *dlm,
 	return can_proceed;
 }
 
-int dlm_lockres_is_dirty(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
+static int dlm_lockres_is_dirty(struct dlm_ctxt *dlm,
+				struct dlm_lock_resource *res)
 {
 	int ret;
 	spin_lock(&res->spinlock);
@@ -2434,8 +2821,15 @@ static int dlm_mark_lockres_migrating(struct dlm_ctxt *dlm,
 	__dlm_lockres_reserve_ast(res);
 	spin_unlock(&res->spinlock);
 
-	/* now flush all the pending asts.. hang out for a bit */
+	/* now flush all the pending asts */
 	dlm_kick_thread(dlm, res);
+	/* before waiting on DIRTY, block processes which may
+	 * try to dirty the lockres before MIGRATING is set */
+	spin_lock(&res->spinlock);
+	BUG_ON(res->state & DLM_LOCK_RES_BLOCK_DIRTY);
+	res->state |= DLM_LOCK_RES_BLOCK_DIRTY;
+	spin_unlock(&res->spinlock);
+	/* now wait on any pending asts and the DIRTY state */
 	wait_event(dlm->ast_wq, !dlm_lockres_is_dirty(dlm, res));
 	dlm_lockres_release_ast(dlm, res);
 
@@ -2461,6 +2855,13 @@ again:
 		mlog(0, "trying again...\n");
 		goto again;
 	}
+	/* now that we are sure the MIGRATING state is there, drop
+	 * the unneded state which blocked threads trying to DIRTY */
+	spin_lock(&res->spinlock);
+	BUG_ON(!(res->state & DLM_LOCK_RES_BLOCK_DIRTY));
+	BUG_ON(!(res->state & DLM_LOCK_RES_MIGRATING));
+	res->state &= ~DLM_LOCK_RES_BLOCK_DIRTY;
+	spin_unlock(&res->spinlock);
 
 	/* did the target go down or die? */
 	spin_lock(&dlm->spinlock);
@@ -2490,7 +2891,7 @@ static void dlm_remove_nonlocal_locks(struct dlm_ctxt *dlm,
 {
 	struct list_head *iter, *iter2;
 	struct list_head *queue = &res->granted;
-	int i;
+	int i, bit;
 	struct dlm_lock *lock;
 
 	assert_spin_locked(&res->spinlock);
@@ -2508,12 +2909,28 @@ static void dlm_remove_nonlocal_locks(struct dlm_ctxt *dlm,
 				BUG_ON(!list_empty(&lock->bast_list));
 				BUG_ON(lock->ast_pending);
 				BUG_ON(lock->bast_pending);
+				dlm_lockres_clear_refmap_bit(lock->ml.node, res);
 				list_del_init(&lock->list);
 				dlm_lock_put(lock);
 			}
 		}
 		queue++;
 	}
+	bit = 0;
+	while (1) {
+		bit = find_next_bit(res->refmap, O2NM_MAX_NODES, bit);
+		if (bit >= O2NM_MAX_NODES)
+			break;
+		/* do not clear the local node reference, if there is a
+		 * process holding this, let it drop the ref itself */
+		if (bit != dlm->node_num) {
+			mlog(0, "%s:%.*s: node %u had a ref to this "
+			     "migrating lockres, clearing\n", dlm->name,
+			     res->lockname.len, res->lockname.name, bit);
+			dlm_lockres_clear_refmap_bit(bit, res);
+		}
+		bit++;
+	}
 }
 
 /* for now this is not too intelligent.  we will
@@ -2601,6 +3018,16 @@ static int dlm_do_migrate_request(struct dlm_ctxt *dlm,
 			mlog(0, "migrate request (node %u) returned %d!\n",
 			     nodenum, status);
 			ret = status;
+		} else if (status == DLM_MIGRATE_RESPONSE_MASTERY_REF) {
+			/* during the migration request we short-circuited
+			 * the mastery of the lockres.  make sure we have
+			 * a mastery ref for nodenum */
+			mlog(0, "%s:%.*s: need ref for node %u\n",
+			     dlm->name, res->lockname.len, res->lockname.name,
+			     nodenum);
+			spin_lock(&res->spinlock);
+			dlm_lockres_set_refmap_bit(nodenum, res);
+			spin_unlock(&res->spinlock);
 		}
 	}
 
@@ -2619,7 +3046,8 @@ static int dlm_do_migrate_request(struct dlm_ctxt *dlm,
  * we will have no mle in the list to start with.  now we can add an mle for
  * the migration and this should be the only one found for those scanning the
  * list.  */
-int dlm_migrate_request_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_migrate_request_handler(struct o2net_msg *msg, u32 len, void *data,
+				void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	struct dlm_lock_resource *res = NULL;
@@ -2745,7 +3173,13 @@ static int dlm_add_migration_mle(struct dlm_ctxt *dlm,
 			/* remove it from the list so that only one
 			 * mle will be found */
 			list_del_init(&tmp->list);
-			__dlm_mle_detach_hb_events(dlm, mle);
+			/* this was obviously WRONG.  mle is uninited here.  should be tmp. */
+			__dlm_mle_detach_hb_events(dlm, tmp);
+			ret = DLM_MIGRATE_RESPONSE_MASTERY_REF;
+			mlog(0, "%s:%.*s: master=%u, newmaster=%u, "
+			    "telling master to get ref for cleared out mle "
+			    "during migration\n", dlm->name, namelen, name,
+			    master, new_master);
 		}
 		spin_unlock(&tmp->spinlock);
 	}
@@ -2753,6 +3187,8 @@ static int dlm_add_migration_mle(struct dlm_ctxt *dlm,
 	/* now add a migration mle to the tail of the list */
 	dlm_init_mle(mle, DLM_MLE_MIGRATION, dlm, res, name, namelen);
 	mle->new_master = new_master;
+	/* the new master will be sending an assert master for this.
+	 * at that point we will get the refmap reference */
 	mle->master = master;
 	/* do this for consistency with other mle types */
 	set_bit(new_master, mle->maybe_map);
@@ -2902,6 +3338,13 @@ int dlm_finish_migration(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 	clear_bit(dlm->node_num, iter.node_map);
 	spin_unlock(&dlm->spinlock);
 
+	/* ownership of the lockres is changing.  account for the
+	 * mastery reference here since old_master will briefly have
+	 * a reference after the migration completes */
+	spin_lock(&res->spinlock);
+	dlm_lockres_set_refmap_bit(old_master, res);
+	spin_unlock(&res->spinlock);
+
 	mlog(0, "now time to do a migrate request to other nodes\n");
 	ret = dlm_do_migrate_request(dlm, res, old_master,
 				     dlm->node_num, &iter);
@@ -2914,8 +3357,7 @@ int dlm_finish_migration(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 	     res->lockname.len, res->lockname.name);
 	/* this call now finishes out the nodemap
 	 * even if one or more nodes die */
-	ret = dlm_do_assert_master(dlm, res->lockname.name,
-				   res->lockname.len, iter.node_map,
+	ret = dlm_do_assert_master(dlm, res, iter.node_map,
 				   DLM_ASSERT_MASTER_FINISH_MIGRATION);
 	if (ret < 0) {
 		/* no longer need to retry.  all living nodes contacted. */
@@ -2927,8 +3369,7 @@ int dlm_finish_migration(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 	set_bit(old_master, iter.node_map);
 	mlog(0, "doing assert master of %.*s back to %u\n",
 	     res->lockname.len, res->lockname.name, old_master);
-	ret = dlm_do_assert_master(dlm, res->lockname.name,
-				   res->lockname.len, iter.node_map,
+	ret = dlm_do_assert_master(dlm, res, iter.node_map,
 				   DLM_ASSERT_MASTER_FINISH_MIGRATION);
 	if (ret < 0) {
 		mlog(0, "assert master to original master failed "
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index 367a11e..6d4a83d 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -163,9 +163,6 @@ void dlm_dispatch_work(struct work_struct *work)
 	dlm_workfunc_t *workfunc;
 	int tot=0;
 
-	if (!dlm_joined(dlm))
-		return;
-
 	spin_lock(&dlm->work_lock);
 	list_splice_init(&dlm->work_list, &tmp_list);
 	spin_unlock(&dlm->work_lock);
@@ -821,7 +818,8 @@ static int dlm_request_all_locks(struct dlm_ctxt *dlm, u8 request_from,
 
 }
 
-int dlm_request_all_locks_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_request_all_locks_handler(struct o2net_msg *msg, u32 len, void *data,
+				  void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	struct dlm_lock_request *lr = (struct dlm_lock_request *)msg->buf;
@@ -978,7 +976,8 @@ static int dlm_send_all_done_msg(struct dlm_ctxt *dlm, u8 dead_node, u8 send_to)
 }
 
 
-int dlm_reco_data_done_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_reco_data_done_handler(struct o2net_msg *msg, u32 len, void *data,
+			       void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	struct dlm_reco_data_done *done = (struct dlm_reco_data_done *)msg->buf;
@@ -1129,6 +1128,11 @@ static int dlm_send_mig_lockres_msg(struct dlm_ctxt *dlm,
 	if (total_locks == mres_total_locks)
 		mres->flags |= DLM_MRES_ALL_DONE;
 
+	mlog(0, "%s:%.*s: sending mig lockres (%s) to %u\n",
+	     dlm->name, res->lockname.len, res->lockname.name,
+	     orig_flags & DLM_MRES_MIGRATION ? "migrate" : "recovery",
+	     send_to);
+
 	/* send it */
 	ret = o2net_send_message(DLM_MIG_LOCKRES_MSG, dlm->key, mres,
 				 sz, send_to, &status);
@@ -1213,6 +1217,34 @@ static int dlm_add_lock_to_array(struct dlm_lock *lock,
 	return 0;
 }
 
+static void dlm_add_dummy_lock(struct dlm_ctxt *dlm,
+			       struct dlm_migratable_lockres *mres)
+{
+	struct dlm_lock dummy;
+	memset(&dummy, 0, sizeof(dummy));
+	dummy.ml.cookie = 0;
+	dummy.ml.type = LKM_IVMODE;
+	dummy.ml.convert_type = LKM_IVMODE;
+	dummy.ml.highest_blocked = LKM_IVMODE;
+	dummy.lksb = NULL;
+	dummy.ml.node = dlm->node_num;
+	dlm_add_lock_to_array(&dummy, mres, DLM_BLOCKED_LIST);
+}
+
+static inline int dlm_is_dummy_lock(struct dlm_ctxt *dlm,
+				    struct dlm_migratable_lock *ml,
+				    u8 *nodenum)
+{
+	if (unlikely(ml->cookie == 0 &&
+	    ml->type == LKM_IVMODE &&
+	    ml->convert_type == LKM_IVMODE &&
+	    ml->highest_blocked == LKM_IVMODE &&
+	    ml->list == DLM_BLOCKED_LIST)) {
+		*nodenum = ml->node;
+		return 1;
+	}
+	return 0;
+}
 
 int dlm_send_one_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 			 struct dlm_migratable_lockres *mres,
@@ -1260,6 +1292,14 @@ int dlm_send_one_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 				goto error;
 		}
 	}
+	if (total_locks == 0) {
+		/* send a dummy lock to indicate a mastery reference only */
+		mlog(0, "%s:%.*s: sending dummy lock to %u, %s\n",
+		     dlm->name, res->lockname.len, res->lockname.name,
+		     send_to, flags & DLM_MRES_RECOVERY ? "recovery" :
+		     "migration");
+		dlm_add_dummy_lock(dlm, mres);
+	}
 	/* flush any remaining locks */
 	ret = dlm_send_mig_lockres_msg(dlm, mres, send_to, res, total_locks);
 	if (ret < 0)
@@ -1293,7 +1333,8 @@ error:
  * do we spin?  returning an error only delays the problem really
  */
 
-int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data,
+			    void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	struct dlm_migratable_lockres *mres =
@@ -1382,17 +1423,21 @@ int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data)
 		spin_lock(&res->spinlock);
 		res->state &= ~DLM_LOCK_RES_IN_PROGRESS;
 		spin_unlock(&res->spinlock);
+		wake_up(&res->wq);
 
 		/* add an extra ref for just-allocated lockres 
 		 * otherwise the lockres will be purged immediately */
 		dlm_lockres_get(res);
-
 	}
 
 	/* at this point we have allocated everything we need,
 	 * and we have a hashed lockres with an extra ref and
 	 * the proper res->state flags. */
 	ret = 0;
+	spin_lock(&res->spinlock);
+	/* drop this either when master requery finds a different master
+	 * or when a lock is added by the recovery worker */
+	dlm_lockres_grab_inflight_ref(dlm, res);
 	if (mres->master == DLM_LOCK_RES_OWNER_UNKNOWN) {
 		/* migration cannot have an unknown master */
 		BUG_ON(!(mres->flags & DLM_MRES_RECOVERY));
@@ -1400,10 +1445,11 @@ int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data)
 			  "unknown owner.. will need to requery: "
 			  "%.*s\n", mres->lockname_len, mres->lockname);
 	} else {
-		spin_lock(&res->spinlock);
+		/* take a reference now to pin the lockres, drop it
+		 * when locks are added in the worker */
 		dlm_change_lockres_owner(dlm, res, dlm->node_num);
-		spin_unlock(&res->spinlock);
 	}
+	spin_unlock(&res->spinlock);
 
 	/* queue up work for dlm_mig_lockres_worker */
 	dlm_grab(dlm);  /* get an extra ref for the work item */
@@ -1459,6 +1505,9 @@ again:
 				   "this node will take it.\n",
 				   res->lockname.len, res->lockname.name);
 		} else {
+			spin_lock(&res->spinlock);
+			dlm_lockres_drop_inflight_ref(dlm, res);
+			spin_unlock(&res->spinlock);
 			mlog(0, "master needs to respond to sender "
 				  "that node %u still owns %.*s\n",
 				  real_master, res->lockname.len,
@@ -1578,7 +1627,8 @@ int dlm_do_master_requery(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 /* this function cannot error, so unless the sending
  * or receiving of the message failed, the owner can
  * be trusted */
-int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data,
+			       void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	struct dlm_master_requery *req = (struct dlm_master_requery *)msg->buf;
@@ -1660,21 +1710,38 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
 {
 	struct dlm_migratable_lock *ml;
 	struct list_head *queue;
+	struct list_head *tmpq = NULL;
 	struct dlm_lock *newlock = NULL;
 	struct dlm_lockstatus *lksb = NULL;
 	int ret = 0;
-	int i, bad;
+	int i, j, bad;
 	struct list_head *iter;
 	struct dlm_lock *lock = NULL;
+	u8 from = O2NM_MAX_NODES;
+	unsigned int added = 0;
 
 	mlog(0, "running %d locks for this lockres\n", mres->num_locks);
 	for (i=0; i<mres->num_locks; i++) {
 		ml = &(mres->ml[i]);
+
+		if (dlm_is_dummy_lock(dlm, ml, &from)) {
+			/* placeholder, just need to set the refmap bit */
+			BUG_ON(mres->num_locks != 1);
+			mlog(0, "%s:%.*s: dummy lock for %u\n",
+			     dlm->name, mres->lockname_len, mres->lockname,
+			     from);
+			spin_lock(&res->spinlock);
+			dlm_lockres_set_refmap_bit(from, res);
+			spin_unlock(&res->spinlock);
+			added++;
+			break;
+		}
 		BUG_ON(ml->highest_blocked != LKM_IVMODE);
 		newlock = NULL;
 		lksb = NULL;
 
 		queue = dlm_list_num_to_pointer(res, ml->list);
+		tmpq = NULL;
 
 		/* if the lock is for the local node it needs to
 		 * be moved to the proper location within the queue.
@@ -1684,11 +1751,16 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
 			BUG_ON(!(mres->flags & DLM_MRES_MIGRATION));
 
 			spin_lock(&res->spinlock);
-			list_for_each(iter, queue) {
-				lock = list_entry (iter, struct dlm_lock, list);
-				if (lock->ml.cookie != ml->cookie)
-					lock = NULL;
-				else
+			for (j = DLM_GRANTED_LIST; j <= DLM_BLOCKED_LIST; j++) {
+				tmpq = dlm_list_idx_to_ptr(res, j);
+				list_for_each(iter, tmpq) {
+					lock = list_entry (iter, struct dlm_lock, list);
+					if (lock->ml.cookie != ml->cookie)
+						lock = NULL;
+					else
+						break;
+				}
+				if (lock)
 					break;
 			}
 
@@ -1698,12 +1770,20 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
 				u64 c = ml->cookie;
 				mlog(ML_ERROR, "could not find local lock "
 					       "with cookie %u:%llu!\n",
-					       dlm_get_lock_cookie_node(c),
-					       dlm_get_lock_cookie_seq(c));
+				     dlm_get_lock_cookie_node(be64_to_cpu(c)),
+				     dlm_get_lock_cookie_seq(be64_to_cpu(c)));
+				__dlm_print_one_lock_resource(res);
 				BUG();
 			}
 			BUG_ON(lock->ml.node != ml->node);
 
+			if (tmpq != queue) {
+				mlog(0, "lock was on %u instead of %u for %.*s\n",
+				     j, ml->list, res->lockname.len, res->lockname.name);
+				spin_unlock(&res->spinlock);
+				continue;
+			}
+
 			/* see NOTE above about why we do not update
 			 * to match the master here */
 
@@ -1711,6 +1791,7 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
 			/* do not alter lock refcount.  switching lists. */
 			list_move_tail(&lock->list, queue);
 			spin_unlock(&res->spinlock);
+			added++;
 
 			mlog(0, "just reordered a local lock!\n");
 			continue;
@@ -1799,14 +1880,14 @@ skip_lvb:
 				mlog(ML_ERROR, "%s:%.*s: %u:%llu: lock already "
 				     "exists on this lockres!\n", dlm->name,
 				     res->lockname.len, res->lockname.name,
-				     dlm_get_lock_cookie_node(c),
-				     dlm_get_lock_cookie_seq(c));
+				     dlm_get_lock_cookie_node(be64_to_cpu(c)),
+				     dlm_get_lock_cookie_seq(be64_to_cpu(c)));
 
 				mlog(ML_NOTICE, "sent lock: type=%d, conv=%d, "
 				     "node=%u, cookie=%u:%llu, queue=%d\n",
 	      			     ml->type, ml->convert_type, ml->node,
-				     dlm_get_lock_cookie_node(ml->cookie),
-				     dlm_get_lock_cookie_seq(ml->cookie),
+				     dlm_get_lock_cookie_node(be64_to_cpu(ml->cookie)),
+				     dlm_get_lock_cookie_seq(be64_to_cpu(ml->cookie)),
 				     ml->list);
 
 				__dlm_print_one_lock_resource(res);
@@ -1817,12 +1898,22 @@ skip_lvb:
 		if (!bad) {
 			dlm_lock_get(newlock);
 			list_add_tail(&newlock->list, queue);
+			mlog(0, "%s:%.*s: added lock for node %u, "
+			     "setting refmap bit\n", dlm->name,
+			     res->lockname.len, res->lockname.name, ml->node);
+			dlm_lockres_set_refmap_bit(ml->node, res);
+			added++;
 		}
 		spin_unlock(&res->spinlock);
 	}
 	mlog(0, "done running all the locks\n");
 
 leave:
+	/* balance the ref taken when the work was queued */
+	spin_lock(&res->spinlock);
+	dlm_lockres_drop_inflight_ref(dlm, res);
+	spin_unlock(&res->spinlock);
+
 	if (ret < 0) {
 		mlog_errno(ret);
 		if (newlock)
@@ -1935,9 +2026,11 @@ static void dlm_finish_local_lockres_recovery(struct dlm_ctxt *dlm,
 		if (res->owner == dead_node) {
 			list_del_init(&res->recovering);
 			spin_lock(&res->spinlock);
+			/* new_master has our reference from
+			 * the lock state sent during recovery */
 			dlm_change_lockres_owner(dlm, res, new_master);
 			res->state &= ~DLM_LOCK_RES_RECOVERING;
-			if (!__dlm_lockres_unused(res))
+			if (__dlm_lockres_has_locks(res))
 				__dlm_dirty_lockres(dlm, res);
 			spin_unlock(&res->spinlock);
 			wake_up(&res->wq);
@@ -1977,9 +2070,11 @@ static void dlm_finish_local_lockres_recovery(struct dlm_ctxt *dlm,
 					dlm_lockres_put(res);
 				}
 				spin_lock(&res->spinlock);
+				/* new_master has our reference from
+				 * the lock state sent during recovery */
 				dlm_change_lockres_owner(dlm, res, new_master);
 				res->state &= ~DLM_LOCK_RES_RECOVERING;
-				if (!__dlm_lockres_unused(res))
+				if (__dlm_lockres_has_locks(res))
 					__dlm_dirty_lockres(dlm, res);
 				spin_unlock(&res->spinlock);
 				wake_up(&res->wq);
@@ -2048,6 +2143,7 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm,
 {
 	struct list_head *iter, *tmpiter;
 	struct dlm_lock *lock;
+	unsigned int freed = 0;
 
 	/* this node is the lockres master:
 	 * 1) remove any stale locks for the dead node
@@ -2062,6 +2158,7 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm,
 		if (lock->ml.node == dead_node) {
 			list_del_init(&lock->list);
 			dlm_lock_put(lock);
+			freed++;
 		}
 	}
 	list_for_each_safe(iter, tmpiter, &res->converting) {
@@ -2069,6 +2166,7 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm,
 		if (lock->ml.node == dead_node) {
 			list_del_init(&lock->list);
 			dlm_lock_put(lock);
+			freed++;
 		}
 	}
 	list_for_each_safe(iter, tmpiter, &res->blocked) {
@@ -2076,9 +2174,23 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm,
 		if (lock->ml.node == dead_node) {
 			list_del_init(&lock->list);
 			dlm_lock_put(lock);
+			freed++;
 		}
 	}
 
+	if (freed) {
+		mlog(0, "%s:%.*s: freed %u locks for dead node %u, "
+		     "dropping ref from lockres\n", dlm->name,
+		     res->lockname.len, res->lockname.name, freed, dead_node);
+		BUG_ON(!test_bit(dead_node, res->refmap));
+		dlm_lockres_clear_refmap_bit(dead_node, res);
+	} else if (test_bit(dead_node, res->refmap)) {
+		mlog(0, "%s:%.*s: dead node %u had a ref, but had "
+		     "no locks and had not purged before dying\n", dlm->name,
+		     res->lockname.len, res->lockname.name, dead_node);
+		dlm_lockres_clear_refmap_bit(dead_node, res);
+	}
+
 	/* do not kick thread yet */
 	__dlm_dirty_lockres(dlm, res);
 }
@@ -2141,9 +2253,21 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node)
 			spin_lock(&res->spinlock);
 			/* zero the lvb if necessary */
 			dlm_revalidate_lvb(dlm, res, dead_node);
-			if (res->owner == dead_node)
+			if (res->owner == dead_node) {
+				if (res->state & DLM_LOCK_RES_DROPPING_REF)
+					mlog(0, "%s:%.*s: owned by "
+					     "dead node %u, this node was "
+					     "dropping its ref when it died. "
+					     "continue, dropping the flag.\n",
+					     dlm->name, res->lockname.len,
+					     res->lockname.name, dead_node);
+
+				/* the wake_up for this will happen when the
+				 * RECOVERING flag is dropped later */
+				res->state &= ~DLM_LOCK_RES_DROPPING_REF;
+
 				dlm_move_lockres_to_recovery_list(dlm, res);
-			else if (res->owner == dlm->node_num) {
+			} else if (res->owner == dlm->node_num) {
 				dlm_free_dead_locks(dlm, res, dead_node);
 				__dlm_lockres_calc_usage(dlm, res);
 			}
@@ -2480,7 +2604,8 @@ retry:
 	return ret;
 }
 
-int dlm_begin_reco_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_begin_reco_handler(struct o2net_msg *msg, u32 len, void *data,
+			   void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	struct dlm_begin_reco *br = (struct dlm_begin_reco *)msg->buf;
@@ -2608,7 +2733,8 @@ stage2:
 	return ret;
 }
 
-int dlm_finalize_reco_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_finalize_reco_handler(struct o2net_msg *msg, u32 len, void *data,
+			      void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	struct dlm_finalize_reco *fr = (struct dlm_finalize_reco *)msg->buf;
diff --git a/fs/ocfs2/dlm/dlmthread.c b/fs/ocfs2/dlm/dlmthread.c
index 0c822f3..8ffa091 100644
--- a/fs/ocfs2/dlm/dlmthread.c
+++ b/fs/ocfs2/dlm/dlmthread.c
@@ -54,9 +54,6 @@
 #include "cluster/masklog.h"
 
 static int dlm_thread(void *data);
-static void dlm_purge_lockres_now(struct dlm_ctxt *dlm,
-				  struct dlm_lock_resource *lockres);
-
 static void dlm_flush_asts(struct dlm_ctxt *dlm);
 
 #define dlm_lock_is_remote(dlm, lock)     ((lock)->ml.node != (dlm)->node_num)
@@ -82,14 +79,33 @@ repeat:
 	current->state = TASK_RUNNING;
 }
 
-
-int __dlm_lockres_unused(struct dlm_lock_resource *res)
+int __dlm_lockres_has_locks(struct dlm_lock_resource *res)
 {
 	if (list_empty(&res->granted) &&
 	    list_empty(&res->converting) &&
-	    list_empty(&res->blocked) &&
-	    list_empty(&res->dirty))
-		return 1;
+	    list_empty(&res->blocked))
+		return 0;
+	return 1;
+}
+
+/* "unused": the lockres has no locks, is not on the dirty list,
+ * has no inflight locks (in the gap between mastery and acquiring
+ * the first lock), and has no bits in its refmap.
+ * truly ready to be freed. */
+int __dlm_lockres_unused(struct dlm_lock_resource *res)
+{
+	if (!__dlm_lockres_has_locks(res) &&
+	    (list_empty(&res->dirty) && !(res->state & DLM_LOCK_RES_DIRTY))) {
+		/* try not to scan the bitmap unless the first two
+		 * conditions are already true */
+		int bit = find_next_bit(res->refmap, O2NM_MAX_NODES, 0);
+		if (bit >= O2NM_MAX_NODES) {
+			/* since the bit for dlm->node_num is not
+			 * set, inflight_locks better be zero */
+			BUG_ON(res->inflight_locks != 0);
+			return 1;
+		}
+	}
 	return 0;
 }
 
@@ -106,46 +122,21 @@ void __dlm_lockres_calc_usage(struct dlm_ctxt *dlm,
 	assert_spin_locked(&res->spinlock);
 
 	if (__dlm_lockres_unused(res)){
-		/* For now, just keep any resource we master */
-		if (res->owner == dlm->node_num)
-		{
-			if (!list_empty(&res->purge)) {
-				mlog(0, "we master %s:%.*s, but it is on "
-				     "the purge list.  Removing\n",
-				     dlm->name, res->lockname.len,
-				     res->lockname.name);
-				list_del_init(&res->purge);
-				dlm->purge_count--;
-			}
-			return;
-		}
-
 		if (list_empty(&res->purge)) {
-			mlog(0, "putting lockres %.*s from purge list\n",
-			     res->lockname.len, res->lockname.name);
+			mlog(0, "putting lockres %.*s:%p onto purge list\n",
+			     res->lockname.len, res->lockname.name, res);
 
 			res->last_used = jiffies;
+			dlm_lockres_get(res);
 			list_add_tail(&res->purge, &dlm->purge_list);
 			dlm->purge_count++;
-
-			/* if this node is not the owner, there is
-			 * no way to keep track of who the owner could be.
-			 * unhash it to avoid serious problems. */
-			if (res->owner != dlm->node_num) {
-				mlog(0, "%s:%.*s: doing immediate "
-				     "purge of lockres owned by %u\n",
-				     dlm->name, res->lockname.len,
-				     res->lockname.name, res->owner);
-
-				dlm_purge_lockres_now(dlm, res);
-			}
 		}
 	} else if (!list_empty(&res->purge)) {
-		mlog(0, "removing lockres %.*s from purge list, "
-		     "owner=%u\n", res->lockname.len, res->lockname.name,
-		     res->owner);
+		mlog(0, "removing lockres %.*s:%p from purge list, owner=%u\n",
+		     res->lockname.len, res->lockname.name, res, res->owner);
 
 		list_del_init(&res->purge);
+		dlm_lockres_put(res);
 		dlm->purge_count--;
 	}
 }
@@ -163,68 +154,65 @@ void dlm_lockres_calc_usage(struct dlm_ctxt *dlm,
 	spin_unlock(&dlm->spinlock);
 }
 
-/* TODO: Eventual API: Called with the dlm spinlock held, may drop it
- * to do migration, but will re-acquire before exit. */
-void dlm_purge_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *lockres)
+static int dlm_purge_lockres(struct dlm_ctxt *dlm,
+			     struct dlm_lock_resource *res)
 {
 	int master;
-	int ret;
-
-	spin_lock(&lockres->spinlock);
-	master = lockres->owner == dlm->node_num;
-	spin_unlock(&lockres->spinlock);
+	int ret = 0;
 
-	mlog(0, "purging lockres %.*s, master = %d\n", lockres->lockname.len,
-	     lockres->lockname.name, master);
-
-	/* Non master is the easy case -- no migration required, just
-	 * quit. */
+	spin_lock(&res->spinlock);
+	if (!__dlm_lockres_unused(res)) {
+		spin_unlock(&res->spinlock);
+		mlog(0, "%s:%.*s: tried to purge but not unused\n",
+		     dlm->name, res->lockname.len, res->lockname.name);
+		return -ENOTEMPTY;
+	}
+	master = (res->owner == dlm->node_num);
 	if (!master)
-		goto finish;
-
-	/* Wheee! Migrate lockres here! */
-	spin_unlock(&dlm->spinlock);
-again:
+		res->state |= DLM_LOCK_RES_DROPPING_REF;
+	spin_unlock(&res->spinlock);
 
-	ret = dlm_migrate_lockres(dlm, lockres, O2NM_MAX_NODES);
-	if (ret == -ENOTEMPTY) {
-		mlog(ML_ERROR, "lockres %.*s still has local locks!\n",
-		     lockres->lockname.len, lockres->lockname.name);
+	mlog(0, "purging lockres %.*s, master = %d\n", res->lockname.len,
+	     res->lockname.name, master);
 
-		BUG();
-	} else if (ret < 0) {
-		mlog(ML_NOTICE, "lockres %.*s: migrate failed, retrying\n",
-		     lockres->lockname.len, lockres->lockname.name);
-		msleep(100);
-		goto again;
+	if (!master) {
+		spin_lock(&res->spinlock);
+		/* This ensures that clear refmap is sent after the set */
+		__dlm_wait_on_lockres_flags(res, DLM_LOCK_RES_SETREF_INPROG);
+		spin_unlock(&res->spinlock);
+		/* drop spinlock to do messaging, retake below */
+		spin_unlock(&dlm->spinlock);
+		/* clear our bit from the master's refmap, ignore errors */
+		ret = dlm_drop_lockres_ref(dlm, res);
+		if (ret < 0) {
+			mlog_errno(ret);
+			if (!dlm_is_host_down(ret))
+				BUG();
+		}
+		mlog(0, "%s:%.*s: dlm_deref_lockres returned %d\n",
+		     dlm->name, res->lockname.len, res->lockname.name, ret);
+		spin_lock(&dlm->spinlock);
 	}
 
-	spin_lock(&dlm->spinlock);
-
-finish:
-	if (!list_empty(&lockres->purge)) {
-		list_del_init(&lockres->purge);
+	if (!list_empty(&res->purge)) {
+		mlog(0, "removing lockres %.*s:%p from purgelist, "
+		     "master = %d\n", res->lockname.len, res->lockname.name,
+		     res, master);
+		list_del_init(&res->purge);
+		dlm_lockres_put(res);
 		dlm->purge_count--;
 	}
-	__dlm_unhash_lockres(lockres);
-}
-
-/* make an unused lockres go away immediately.
- * as soon as the dlm spinlock is dropped, this lockres
- * will not be found. kfree still happens on last put. */
-static void dlm_purge_lockres_now(struct dlm_ctxt *dlm,
-				  struct dlm_lock_resource *lockres)
-{
-	assert_spin_locked(&dlm->spinlock);
-	assert_spin_locked(&lockres->spinlock);
+	__dlm_unhash_lockres(res);
 
-	BUG_ON(!__dlm_lockres_unused(lockres));
-
-	if (!list_empty(&lockres->purge)) {
-		list_del_init(&lockres->purge);
-		dlm->purge_count--;
+	/* lockres is not in the hash now.  drop the flag and wake up
+	 * any processes waiting in dlm_get_lock_resource. */
+	if (!master) {
+		spin_lock(&res->spinlock);
+		res->state &= ~DLM_LOCK_RES_DROPPING_REF;
+		spin_unlock(&res->spinlock);
+		wake_up(&res->wq);
 	}
-	__dlm_unhash_lockres(lockres);
+	return 0;
 }
 
 static void dlm_run_purge_list(struct dlm_ctxt *dlm,
@@ -268,13 +256,17 @@ static void dlm_run_purge_list(struct dlm_ctxt *dlm,
 			break;
 		}
 
+		mlog(0, "removing lockres %.*s:%p from purgelist\n",
+		     lockres->lockname.len, lockres->lockname.name, lockres);
 		list_del_init(&lockres->purge);
+		dlm_lockres_put(lockres);
 		dlm->purge_count--;
 
 		/* This may drop and reacquire the dlm spinlock if it
 		 * has to do migration. */
 		mlog(0, "calling dlm_purge_lockres!\n");
-		dlm_purge_lockres(dlm, lockres);
+		if (dlm_purge_lockres(dlm, lockres))
+			BUG();
 		mlog(0, "DONE calling dlm_purge_lockres!\n");
 
 		/* Avoid adding any scheduling latencies */
@@ -467,12 +459,17 @@ void __dlm_dirty_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
 	assert_spin_locked(&res->spinlock);
 
 	/* don't shuffle secondary queues */
-	if ((res->owner == dlm->node_num) &&
-	    !(res->state & DLM_LOCK_RES_DIRTY)) {
-		/* ref for dirty_list */
-		dlm_lockres_get(res);
-		list_add_tail(&res->dirty, &dlm->dirty_list);
-		res->state |= DLM_LOCK_RES_DIRTY;
+	if ((res->owner == dlm->node_num)) {
+		if (res->state & (DLM_LOCK_RES_MIGRATING |
+				  DLM_LOCK_RES_BLOCK_DIRTY))
+		    return;
+
+		if (list_empty(&res->dirty)) {
+			/* ref for dirty_list */
+			dlm_lockres_get(res);
+			list_add_tail(&res->dirty, &dlm->dirty_list);
+			res->state |= DLM_LOCK_RES_DIRTY;
+		}
 	}
 }
 
@@ -651,7 +648,7 @@ static int dlm_thread(void *data)
 			dlm_lockres_get(res);
 
 			spin_lock(&res->spinlock);
-			res->state &= ~DLM_LOCK_RES_DIRTY;
+			/* We clear the DLM_LOCK_RES_DIRTY state once we shuffle lists below */
 			list_del_init(&res->dirty);
 			spin_unlock(&res->spinlock);
 			spin_unlock(&dlm->spinlock);
@@ -675,10 +672,11 @@ static int dlm_thread(void *data)
 			/* it is now ok to move lockreses in these states
 			 * to the dirty list, assuming that they will only be
 			 * dirty for a short while. */
+			BUG_ON(res->state & DLM_LOCK_RES_MIGRATING);
 			if (res->state & (DLM_LOCK_RES_IN_PROGRESS |
-					  DLM_LOCK_RES_MIGRATING |
 					  DLM_LOCK_RES_RECOVERING)) {
 				/* move it to the tail and keep going */
+				res->state &= ~DLM_LOCK_RES_DIRTY;
 				spin_unlock(&res->spinlock);
 				mlog(0, "delaying list shuffling for in-"
 				     "progress lockres %.*s, state=%d\n",
@@ -699,6 +697,7 @@ static int dlm_thread(void *data)
 
 			/* called while holding lockres lock */
 			dlm_shuffle_lists(dlm, res);
+			res->state &= ~DLM_LOCK_RES_DIRTY;
 			spin_unlock(&res->spinlock);
 
 			dlm_lockres_calc_usage(dlm, res);
@@ -709,11 +708,8 @@ in_progress:
 			/* if the lock was in-progress, stick
 			 * it on the back of the list */
 			if (delay) {
-				/* ref for dirty_list */
-				dlm_lockres_get(res);
 				spin_lock(&res->spinlock);
-				list_add_tail(&res->dirty, &dlm->dirty_list);
-				res->state |= DLM_LOCK_RES_DIRTY;
+				__dlm_dirty_lockres(dlm, res);
 				spin_unlock(&res->spinlock);
 			}
 			dlm_lockres_put(res);
diff --git a/fs/ocfs2/dlm/dlmunlock.c b/fs/ocfs2/dlm/dlmunlock.c
index 37be4b2..86ca085 100644
--- a/fs/ocfs2/dlm/dlmunlock.c
+++ b/fs/ocfs2/dlm/dlmunlock.c
@@ -147,6 +147,10 @@ static enum dlm_status dlmunlock_common(struct dlm_ctxt *dlm,
 		goto leave;
 	}
 
+	if (res->state & DLM_LOCK_RES_MIGRATING) {
+		status = DLM_MIGRATING;
+		goto leave;
+	}
 
 	/* see above for what the spec says about
 	 * LKM_CANCEL and the lock queue state */
@@ -244,8 +248,8 @@ leave:
 		/* this should always be coupled with list removal */
 		BUG_ON(!(actions & DLM_UNLOCK_REMOVE_LOCK));
 		mlog(0, "lock %u:%llu should be gone now! refs=%d\n",
-		     dlm_get_lock_cookie_node(lock->ml.cookie),
-		     dlm_get_lock_cookie_seq(lock->ml.cookie),
+		     dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
+		     dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
 		     atomic_read(&lock->lock_refs.refcount)-1);
 		dlm_lock_put(lock);
 	}
@@ -379,7 +383,8 @@ static enum dlm_status dlm_send_remote_unlock_request(struct dlm_ctxt *dlm,
  * returns: DLM_NORMAL, DLM_BADARGS, DLM_IVLOCKID,
  *          return value from dlmunlock_master
  */
-int dlm_unlock_lock_handler(struct o2net_msg *msg, u32 len, void *data)
+int dlm_unlock_lock_handler(struct o2net_msg *msg, u32 len, void *data,
+			    void **ret_data)
 {
 	struct dlm_ctxt *dlm = data;
 	struct dlm_unlock_lock *unlock = (struct dlm_unlock_lock *)msg->buf;
@@ -502,8 +507,8 @@ not_found:
 	if (!found)
 		mlog(ML_ERROR, "failed to find lock to unlock! "
 			       "cookie=%u:%llu\n",
-			       dlm_get_lock_cookie_node(unlock->cookie),
-			       dlm_get_lock_cookie_seq(unlock->cookie));
+		     dlm_get_lock_cookie_node(be64_to_cpu(unlock->cookie)),
+		     dlm_get_lock_cookie_seq(be64_to_cpu(unlock->cookie)));
 	else
 		dlm_lock_put(lock);
 
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 10953a5..f2cd3bf 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1365,13 +1365,13 @@ bail:
 	return ret;
 }
 
-struct inode_operations ocfs2_file_iops = {
+const struct inode_operations ocfs2_file_iops = {
 	.setattr	= ocfs2_setattr,
 	.getattr	= ocfs2_getattr,
 	.permission	= ocfs2_permission,
 };
 
-struct inode_operations ocfs2_special_file_iops = {
+const struct inode_operations ocfs2_special_file_iops = {
 	.setattr	= ocfs2_setattr,
 	.getattr	= ocfs2_getattr,
 	.permission	= ocfs2_permission,
diff --git a/fs/ocfs2/file.h b/fs/ocfs2/file.h
index 601a453..cc973f0 100644
--- a/fs/ocfs2/file.h
+++ b/fs/ocfs2/file.h
@@ -28,8 +28,8 @@
 
 extern const struct file_operations ocfs2_fops;
 extern const struct file_operations ocfs2_dops;
-extern struct inode_operations ocfs2_file_iops;
-extern struct inode_operations ocfs2_special_file_iops;
+extern const struct inode_operations ocfs2_file_iops;
+extern const struct inode_operations ocfs2_special_file_iops;
 struct ocfs2_alloc_context;
 
 enum ocfs2_alloc_restarted {
diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
index e121636..d026b4f 100644
--- a/fs/ocfs2/journal.h
+++ b/fs/ocfs2/journal.h
@@ -306,8 +306,8 @@ int                  ocfs2_journal_dirty_data(handle_t *handle,
  * for the dinode, one for the new block. */
 #define OCFS2_SIMPLE_DIR_EXTEND_CREDITS (2)
 
-/* file update (nlink, etc) + dir entry block */
-#define OCFS2_LINK_CREDITS  (OCFS2_INODE_UPDATE_CREDITS + 1)
+/* file update (nlink, etc) + directory mtime/ctime + dir entry block */
+#define OCFS2_LINK_CREDITS  (2*OCFS2_INODE_UPDATE_CREDITS + 1)
 
 /* inode + dir inode (if we unlink a dir), + dir entry block + orphan
  * dir inode link */
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index f3d7803..f7fa52b 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -2306,7 +2306,7 @@ leave:
 	return status;
 }
 
-struct inode_operations ocfs2_dir_iops = {
+const struct inode_operations ocfs2_dir_iops = {
 	.create		= ocfs2_create,
 	.lookup		= ocfs2_lookup,
 	.link		= ocfs2_link,
diff --git a/fs/ocfs2/namei.h b/fs/ocfs2/namei.h
index 8425944..0975c7b 100644
--- a/fs/ocfs2/namei.h
+++ b/fs/ocfs2/namei.h
@@ -26,7 +26,7 @@
 #ifndef OCFS2_NAMEI_H
 #define OCFS2_NAMEI_H
 
-extern struct inode_operations ocfs2_dir_iops;
+extern const struct inode_operations ocfs2_dir_iops;
 
 struct dentry *ocfs2_get_parent(struct dentry *child);
 
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 6e300a8..6534f92 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -116,7 +116,7 @@ static void ocfs2_destroy_inode(struct inode *inode);
 
 static unsigned long long ocfs2_max_file_offset(unsigned int blockshift);
 
-static struct super_operations ocfs2_sops = {
+static const struct super_operations ocfs2_sops = {
 	.statfs		= ocfs2_statfs,
 	.alloc_inode	= ocfs2_alloc_inode,
 	.destroy_inode	= ocfs2_destroy_inode,
diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c
index 03b0191..40dc1a5 100644
--- a/fs/ocfs2/symlink.c
+++ b/fs/ocfs2/symlink.c
@@ -170,12 +170,12 @@ bail:
 	return ERR_PTR(status);
 }
 
-struct inode_operations ocfs2_symlink_inode_operations = {
+const struct inode_operations ocfs2_symlink_inode_operations = {
 	.readlink	= page_readlink,
 	.follow_link	= ocfs2_follow_link,
 	.getattr	= ocfs2_getattr,
 };
-struct inode_operations ocfs2_fast_symlink_inode_operations = {
+const struct inode_operations ocfs2_fast_symlink_inode_operations = {
 	.readlink	= ocfs2_readlink,
 	.follow_link	= ocfs2_follow_link,
 	.getattr	= ocfs2_getattr,
diff --git a/fs/ocfs2/symlink.h b/fs/ocfs2/symlink.h
index 1ea9e4d..65a6c9c 100644
--- a/fs/ocfs2/symlink.h
+++ b/fs/ocfs2/symlink.h
@@ -26,8 +26,8 @@
 #ifndef OCFS2_SYMLINK_H
 #define OCFS2_SYMLINK_H
 
-extern struct inode_operations ocfs2_symlink_inode_operations;
-extern struct inode_operations ocfs2_fast_symlink_inode_operations;
+extern const struct inode_operations ocfs2_symlink_inode_operations;
+extern const struct inode_operations ocfs2_fast_symlink_inode_operations;
 
 /*
  * Test whether an inode is a fast symlink.
diff --git a/fs/ocfs2/vote.c b/fs/ocfs2/vote.c
index 0afd8b9..f30e63b 100644
--- a/fs/ocfs2/vote.c
+++ b/fs/ocfs2/vote.c
@@ -887,7 +887,7 @@ static inline int ocfs2_translate_response(int response)
 
 static int ocfs2_handle_response_message(struct o2net_msg *msg,
 					 u32 len,
-					 void *data)
+					 void *data, void **ret_data)
 {
 	unsigned int response_id, node_num;
 	int response_status;
@@ -943,7 +943,7 @@ bail:
 
 static int ocfs2_handle_vote_message(struct o2net_msg *msg,
 				     u32 len,
-				     void *data)
+				     void *data, void **ret_data)
 {
 	int status;
 	struct ocfs2_super *osb = data;
@@ -1007,7 +1007,7 @@ int ocfs2_register_net_handlers(struct ocfs2_super *osb)
 					osb->net_key,
 					sizeof(struct ocfs2_response_msg),
 					ocfs2_handle_response_message,
-					osb, &osb->osb_net_handlers);
+					osb, NULL, &osb->osb_net_handlers);
 	if (status) {
 		mlog_errno(status);
 		goto bail;
@@ -1017,7 +1017,7 @@ int ocfs2_register_net_handlers(struct ocfs2_super *osb)
 					osb->net_key,
 					sizeof(struct ocfs2_vote_msg),
 					ocfs2_handle_vote_message,
-					osb, &osb->osb_net_handlers);
+					osb, NULL, &osb->osb_net_handlers);
 	if (status) {
 		mlog_errno(status);
 		goto bail;
diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c
index 99c0bc3..bde1c16 100644
--- a/fs/openpromfs/inode.c
+++ b/fs/openpromfs/inode.c
@@ -169,7 +169,7 @@ static const struct file_operations openprom_operations = {
 
 static struct dentry *openpromfs_lookup(struct inode *, struct dentry *, struct nameidata *);
 
-static struct inode_operations openprom_inode_operations = {
+static const struct inode_operations openprom_inode_operations = {
 	.lookup		= openpromfs_lookup,
 };
 
@@ -364,7 +364,7 @@ static int openprom_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations openprom_sops = { 
+static const struct super_operations openprom_sops = {
 	.alloc_inode	= openprom_alloc_inode,
 	.destroy_inode	= openprom_destroy_inode,
 	.read_inode	= openprom_read_inode,
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 3d73d94..ac32a2e 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -365,7 +365,7 @@ void delete_partition(struct gendisk *disk, int part)
 	kobject_put(&p->kobj);
 }
 
-void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len)
+void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len, int flags)
 {
 	struct hd_struct *p;
 
@@ -390,6 +390,15 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len)
 	if (!disk->part_uevent_suppress)
 		kobject_uevent(&p->kobj, KOBJ_ADD);
 	sysfs_create_link(&p->kobj, &block_subsys.kset.kobj, "subsystem");
+	if (flags & ADDPART_FLAG_WHOLEDISK) {
+		static struct attribute addpartattr = {
+			.name = "whole_disk",
+			.mode = S_IRUSR | S_IRGRP | S_IROTH,
+			.owner = THIS_MODULE,
+		};
+
+		sysfs_create_file(&p->kobj, &addpartattr);
+	}
 	partition_sysfs_add_subdir(p);
 	disk->part[part-1] = p;
 }
@@ -543,9 +552,9 @@ int rescan_partitions(struct gendisk *disk, struct block_device *bdev)
 			printk(" %s: p%d exceeds device capacity\n",
 				disk->disk_name, p);
 		}
-		add_partition(disk, p, from, size);
+		add_partition(disk, p, from, size, state->parts[p].flags);
 #ifdef CONFIG_BLK_DEV_MD
-		if (state->parts[p].flags)
+		if (state->parts[p].flags & ADDPART_FLAG_RAID)
 			md_autodetect_dev(bdev->bd_dev+p);
 #endif
 	}
diff --git a/fs/partitions/msdos.c b/fs/partitions/msdos.c
index 8c7af17..4ccec4c 100644
--- a/fs/partitions/msdos.c
+++ b/fs/partitions/msdos.c
@@ -63,15 +63,25 @@ msdos_magic_present(unsigned char *p)
 #define AIX_LABEL_MAGIC4	0xC1
 static int aix_magic_present(unsigned char *p, struct block_device *bdev)
 {
+	struct partition *pt = (struct partition *) (p + 0x1be);
 	Sector sect;
 	unsigned char *d;
-	int ret = 0;
+	int slot, ret = 0;
 
-	if (p[0] != AIX_LABEL_MAGIC1 &&
-		p[1] != AIX_LABEL_MAGIC2 &&
-		p[2] != AIX_LABEL_MAGIC3 &&
-		p[3] != AIX_LABEL_MAGIC4)
+	if (!(p[0] == AIX_LABEL_MAGIC1 &&
+		p[1] == AIX_LABEL_MAGIC2 &&
+		p[2] == AIX_LABEL_MAGIC3 &&
+		p[3] == AIX_LABEL_MAGIC4))
 		return 0;
+	/* Assume the partition table is valid if Linux partitions exists */
+	for (slot = 1; slot <= 4; slot++, pt++) {
+		if (pt->sys_ind == LINUX_SWAP_PARTITION ||
+			pt->sys_ind == LINUX_RAID_PARTITION ||
+			pt->sys_ind == LINUX_DATA_PARTITION ||
+			pt->sys_ind == LINUX_LVM_PARTITION ||
+			is_extended_partition(pt))
+			return 0;
+	}
 	d = read_dev_sector(bdev, 7, &sect);
 	if (d) {
 		if (d[0] == '_' && d[1] == 'L' && d[2] == 'V' && d[3] == 'M')
@@ -155,7 +165,7 @@ parse_extended(struct parsed_partitions *state, struct block_device *bdev,
 
 			put_partition(state, state->next, next, size);
 			if (SYS_IND(p) == LINUX_RAID_PARTITION)
-				state->parts[state->next].flags = 1;
+				state->parts[state->next].flags = ADDPART_FLAG_RAID;
 			loopct = 0;
 			if (++state->next == state->limit)
 				goto done;
diff --git a/fs/partitions/sgi.c b/fs/partitions/sgi.c
index 6fa4ff8..ed5ac83 100644
--- a/fs/partitions/sgi.c
+++ b/fs/partitions/sgi.c
@@ -72,7 +72,7 @@ int sgi_partition(struct parsed_partitions *state, struct block_device *bdev)
 		if (blocks) {
 			put_partition(state, slot, start, blocks);
 			if (be32_to_cpu(p->type) == LINUX_RAID_PARTITION)
-				state->parts[slot].flags = 1;
+				state->parts[slot].flags = ADDPART_FLAG_RAID;
 		}
 		slot++;
 	}
diff --git a/fs/partitions/sun.c b/fs/partitions/sun.c
index 0a5927c..123f8b4 100644
--- a/fs/partitions/sun.c
+++ b/fs/partitions/sun.c
@@ -80,8 +80,11 @@ int sun_partition(struct parsed_partitions *state, struct block_device *bdev)
 		num_sectors = be32_to_cpu(p->num_sectors);
 		if (num_sectors) {
 			put_partition(state, slot, st_sector, num_sectors);
+			state->parts[slot].flags = 0;
 			if (label->infos[i].id == LINUX_RAID_PARTITION)
-				state->parts[slot].flags = 1;
+				state->parts[slot].flags |= ADDPART_FLAG_RAID;
+			if (label->infos[i].id == SUN_WHOLE_DISK)
+				state->parts[slot].flags |= ADDPART_FLAG_WHOLEDISK;
 		}
 		slot++;
 	}
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 70e4fab1..07c9cdb 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -351,7 +351,7 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole)
 		struct signal_struct *sig = task->signal;
 
 		if (sig->tty) {
-			tty_pgrp = sig->tty->pgrp;
+			tty_pgrp = pid_nr(sig->tty->pgrp);
 			tty_nr = new_encode_dev(tty_devnum(sig->tty));
 		}
 
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 1a979ea..4f5745a 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -93,8 +93,8 @@ struct pid_entry {
 	int len;
 	char *name;
 	mode_t mode;
-	struct inode_operations *iop;
-	struct file_operations *fop;
+	const struct inode_operations *iop;
+	const struct file_operations *fop;
 	union proc_op op;
 };
 
@@ -352,7 +352,7 @@ static int proc_setattr(struct dentry *dentry, struct iattr *attr)
 	return error;
 }
 
-static struct inode_operations proc_def_inode_operations = {
+static const struct inode_operations proc_def_inode_operations = {
 	.setattr	= proc_setattr,
 };
 
@@ -424,7 +424,7 @@ static unsigned mounts_poll(struct file *file, poll_table *wait)
 	return res;
 }
 
-static struct file_operations proc_mounts_operations = {
+static const struct file_operations proc_mounts_operations = {
 	.open		= mounts_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -462,7 +462,7 @@ static int mountstats_open(struct inode *inode, struct file *file)
 	return ret;
 }
 
-static struct file_operations proc_mountstats_operations = {
+static const struct file_operations proc_mountstats_operations = {
 	.open		= mountstats_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -501,7 +501,7 @@ out_no_task:
 	return length;
 }
 
-static struct file_operations proc_info_file_operations = {
+static const struct file_operations proc_info_file_operations = {
 	.read		= proc_info_read,
 };
 
@@ -646,7 +646,7 @@ static loff_t mem_lseek(struct file * file, loff_t offset, int orig)
 	return file->f_pos;
 }
 
-static struct file_operations proc_mem_operations = {
+static const struct file_operations proc_mem_operations = {
 	.llseek		= mem_lseek,
 	.read		= mem_read,
 	.write		= mem_write,
@@ -710,7 +710,7 @@ static ssize_t oom_adjust_write(struct file *file, const char __user *buf,
 	return end - buffer;
 }
 
-static struct file_operations proc_oom_adjust_operations = {
+static const struct file_operations proc_oom_adjust_operations = {
 	.read		= oom_adjust_read,
 	.write		= oom_adjust_write,
 };
@@ -777,7 +777,7 @@ out_free_page:
 	return length;
 }
 
-static struct file_operations proc_loginuid_operations = {
+static const struct file_operations proc_loginuid_operations = {
 	.read		= proc_loginuid_read,
 	.write		= proc_loginuid_write,
 };
@@ -849,7 +849,7 @@ out_no_task:
 	return result;
 }
 
-static struct file_operations proc_seccomp_operations = {
+static const struct file_operations proc_seccomp_operations = {
 	.read		= seccomp_read,
 	.write		= seccomp_write,
 };
@@ -908,7 +908,7 @@ static ssize_t proc_fault_inject_write(struct file * file,
 	return end - buffer;
 }
 
-static struct file_operations proc_fault_inject_operations = {
+static const struct file_operations proc_fault_inject_operations = {
 	.read		= proc_fault_inject_read,
 	.write		= proc_fault_inject_write,
 };
@@ -980,7 +980,7 @@ out:
 	return error;
 }
 
-static struct inode_operations proc_pid_link_inode_operations = {
+static const struct inode_operations proc_pid_link_inode_operations = {
 	.readlink	= proc_pid_readlink,
 	.follow_link	= proc_pid_follow_link,
 	.setattr	= proc_setattr,
@@ -1408,7 +1408,7 @@ out_no_task:
 	return retval;
 }
 
-static struct file_operations proc_fd_operations = {
+static const struct file_operations proc_fd_operations = {
 	.read		= generic_read_dir,
 	.readdir	= proc_readfd,
 };
@@ -1416,7 +1416,7 @@ static struct file_operations proc_fd_operations = {
 /*
  * proc directories can do almost nothing..
  */
-static struct inode_operations proc_fd_inode_operations = {
+static const struct inode_operations proc_fd_inode_operations = {
 	.lookup		= proc_lookupfd,
 	.setattr	= proc_setattr,
 };
@@ -1623,7 +1623,7 @@ out_no_task:
 	return length;
 }
 
-static struct file_operations proc_pid_attr_operations = {
+static const struct file_operations proc_pid_attr_operations = {
 	.read		= proc_pid_attr_read,
 	.write		= proc_pid_attr_write,
 };
@@ -1644,7 +1644,7 @@ static int proc_attr_dir_readdir(struct file * filp,
 				   attr_dir_stuff,ARRAY_SIZE(attr_dir_stuff));
 }
 
-static struct file_operations proc_attr_dir_operations = {
+static const struct file_operations proc_attr_dir_operations = {
 	.read		= generic_read_dir,
 	.readdir	= proc_attr_dir_readdir,
 };
@@ -1656,7 +1656,7 @@ static struct dentry *proc_attr_dir_lookup(struct inode *dir,
 				  attr_dir_stuff, ARRAY_SIZE(attr_dir_stuff));
 }
 
-static struct inode_operations proc_attr_dir_inode_operations = {
+static const struct inode_operations proc_attr_dir_inode_operations = {
 	.lookup		= proc_attr_dir_lookup,
 	.getattr	= pid_getattr,
 	.setattr	= proc_setattr,
@@ -1682,7 +1682,7 @@ static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return ERR_PTR(vfs_follow_link(nd,tmp));
 }
 
-static struct inode_operations proc_self_inode_operations = {
+static const struct inode_operations proc_self_inode_operations = {
 	.readlink	= proc_self_readlink,
 	.follow_link	= proc_self_follow_link,
 };
@@ -1810,17 +1810,21 @@ static int proc_base_fill_cache(struct file *filp, void *dirent, filldir_t filld
 static int proc_pid_io_accounting(struct task_struct *task, char *buffer)
 {
 	return sprintf(buffer,
+#ifdef CONFIG_TASK_XACCT
 			"rchar: %llu\n"
 			"wchar: %llu\n"
 			"syscr: %llu\n"
 			"syscw: %llu\n"
+#endif
 			"read_bytes: %llu\n"
 			"write_bytes: %llu\n"
 			"cancelled_write_bytes: %llu\n",
+#ifdef CONFIG_TASK_XACCT
 			(unsigned long long)task->rchar,
 			(unsigned long long)task->wchar,
 			(unsigned long long)task->syscr,
 			(unsigned long long)task->syscw,
+#endif
 			(unsigned long long)task->ioac.read_bytes,
 			(unsigned long long)task->ioac.write_bytes,
 			(unsigned long long)task->ioac.cancelled_write_bytes);
@@ -1830,8 +1834,8 @@ static int proc_pid_io_accounting(struct task_struct *task, char *buffer)
 /*
  * Thread groups
  */
-static struct file_operations proc_task_operations;
-static struct inode_operations proc_task_inode_operations;
+static const struct file_operations proc_task_operations;
+static const struct inode_operations proc_task_inode_operations;
 
 static struct pid_entry tgid_base_stuff[] = {
 	DIR("task",       S_IRUGO|S_IXUGO, task),
@@ -1890,7 +1894,7 @@ static int proc_tgid_base_readdir(struct file * filp,
 				   tgid_base_stuff,ARRAY_SIZE(tgid_base_stuff));
 }
 
-static struct file_operations proc_tgid_base_operations = {
+static const struct file_operations proc_tgid_base_operations = {
 	.read		= generic_read_dir,
 	.readdir	= proc_tgid_base_readdir,
 };
@@ -1900,7 +1904,7 @@ static struct dentry *proc_tgid_base_lookup(struct inode *dir, struct dentry *de
 				  tgid_base_stuff, ARRAY_SIZE(tgid_base_stuff));
 }
 
-static struct inode_operations proc_tgid_base_inode_operations = {
+static const struct inode_operations proc_tgid_base_inode_operations = {
 	.lookup		= proc_tgid_base_lookup,
 	.getattr	= pid_getattr,
 	.setattr	= proc_setattr,
@@ -2173,12 +2177,12 @@ static struct dentry *proc_tid_base_lookup(struct inode *dir, struct dentry *den
 				  tid_base_stuff, ARRAY_SIZE(tid_base_stuff));
 }
 
-static struct file_operations proc_tid_base_operations = {
+static const struct file_operations proc_tid_base_operations = {
 	.read		= generic_read_dir,
 	.readdir	= proc_tid_base_readdir,
 };
 
-static struct inode_operations proc_tid_base_inode_operations = {
+static const struct inode_operations proc_tid_base_inode_operations = {
 	.lookup		= proc_tid_base_lookup,
 	.getattr	= pid_getattr,
 	.setattr	= proc_setattr,
@@ -2404,13 +2408,13 @@ static int proc_task_getattr(struct vfsmount *mnt, struct dentry *dentry, struct
 	return 0;
 }
 
-static struct inode_operations proc_task_inode_operations = {
+static const struct inode_operations proc_task_inode_operations = {
 	.lookup		= proc_task_lookup,
 	.getattr	= proc_task_getattr,
 	.setattr	= proc_setattr,
 };
 
-static struct file_operations proc_task_operations = {
+static const struct file_operations proc_task_operations = {
 	.read		= generic_read_dir,
 	.readdir	= proc_task_readdir,
 };
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 853cb87..0cdc00d 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -39,7 +39,7 @@ int proc_match(int len, const char *name, struct proc_dir_entry *de)
 	return !memcmp(name, de->name, len);
 }
 
-static struct file_operations proc_file_operations = {
+static const struct file_operations proc_file_operations = {
 	.llseek		= proc_file_lseek,
 	.read		= proc_file_read,
 	.write		= proc_file_write,
@@ -265,7 +265,7 @@ static int proc_getattr(struct vfsmount *mnt, struct dentry *dentry,
 	return 0;
 }
 
-static struct inode_operations proc_file_inode_operations = {
+static const struct inode_operations proc_file_inode_operations = {
 	.setattr	= proc_notify_change,
 };
 
@@ -357,7 +357,7 @@ static void *proc_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return NULL;
 }
 
-static struct inode_operations proc_link_inode_operations = {
+static const struct inode_operations proc_link_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= proc_follow_link,
 };
@@ -497,7 +497,7 @@ out:	unlock_kernel();
  * use the in-memory "struct proc_dir_entry" tree to parse
  * the /proc directory.
  */
-static struct file_operations proc_dir_operations = {
+static const struct file_operations proc_dir_operations = {
 	.read			= generic_read_dir,
 	.readdir		= proc_readdir,
 };
@@ -505,7 +505,7 @@ static struct file_operations proc_dir_operations = {
 /*
  * proc directories can do almost nothing..
  */
-static struct inode_operations proc_dir_inode_operations = {
+static const struct inode_operations proc_dir_inode_operations = {
 	.lookup		= proc_lookup,
 	.getattr	= proc_getattr,
 	.setattr	= proc_notify_change,
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index e26945b..f6722be 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -132,7 +132,7 @@ static int proc_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations proc_sops = { 
+static const struct super_operations proc_sops = {
 	.alloc_inode	= proc_alloc_inode,
 	.destroy_inode	= proc_destroy_inode,
 	.read_inode	= proc_read_inode,
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 987c773..277dcd6 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -38,13 +38,13 @@ extern int proc_tgid_stat(struct task_struct *, char *);
 extern int proc_pid_status(struct task_struct *, char *);
 extern int proc_pid_statm(struct task_struct *, char *);
 
-extern struct file_operations proc_maps_operations;
-extern struct file_operations proc_numa_maps_operations;
-extern struct file_operations proc_smaps_operations;
+extern const struct file_operations proc_maps_operations;
+extern const struct file_operations proc_numa_maps_operations;
+extern const struct file_operations proc_smaps_operations;
 
-extern struct file_operations proc_maps_operations;
-extern struct file_operations proc_numa_maps_operations;
-extern struct file_operations proc_smaps_operations;
+extern const struct file_operations proc_maps_operations;
+extern const struct file_operations proc_numa_maps_operations;
+extern const struct file_operations proc_smaps_operations;
 
 
 void free_proc_entry(struct proc_dir_entry *de);
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
index 5ec6725..22f789d 100644
--- a/fs/proc/nommu.c
+++ b/fs/proc/nommu.c
@@ -128,7 +128,7 @@ static int proc_nommu_vma_list_open(struct inode *inode, struct file *file)
 	return seq_open(file, &proc_nommu_vma_list_seqop);
 }
 
-static struct file_operations proc_nommu_vma_list_operations = {
+static const struct file_operations proc_nommu_vma_list_operations = {
 	.open    = proc_nommu_vma_list_open,
 	.read    = seq_read,
 	.llseek  = seq_lseek,
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index b37ce33..e2c4c0a5 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -121,16 +121,11 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
 {
 	struct sysinfo i;
 	int len;
-	unsigned long inactive;
-	unsigned long active;
-	unsigned long free;
 	unsigned long committed;
 	unsigned long allowed;
 	struct vmalloc_info vmi;
 	long cached;
 
-	get_zone_counts(&active, &inactive, &free);
-
 /*
  * display in kilobytes.
  */
@@ -187,8 +182,8 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
 		K(i.bufferram),
 		K(cached),
 		K(total_swapcache_pages),
-		K(active),
-		K(inactive),
+		K(global_page_state(NR_ACTIVE)),
+		K(global_page_state(NR_INACTIVE)),
 #ifdef CONFIG_HIGHMEM
 		K(i.totalhigh),
 		K(i.freehigh),
@@ -228,7 +223,7 @@ static int fragmentation_open(struct inode *inode, struct file *file)
 	return seq_open(file, &fragmentation_op);
 }
 
-static struct file_operations fragmentation_file_operations = {
+static const struct file_operations fragmentation_file_operations = {
 	.open		= fragmentation_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -241,7 +236,7 @@ static int zoneinfo_open(struct inode *inode, struct file *file)
 	return seq_open(file, &zoneinfo_op);
 }
 
-static struct file_operations proc_zoneinfo_file_operations = {
+static const struct file_operations proc_zoneinfo_file_operations = {
 	.open		= zoneinfo_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -266,7 +261,7 @@ static int cpuinfo_open(struct inode *inode, struct file *file)
 	return seq_open(file, &cpuinfo_op);
 }
 
-static struct file_operations proc_cpuinfo_operations = {
+static const struct file_operations proc_cpuinfo_operations = {
 	.open		= cpuinfo_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -325,7 +320,7 @@ static int devinfo_open(struct inode *inode, struct file *filp)
 	return seq_open(filp, &devinfo_ops);
 }
 
-static struct file_operations proc_devinfo_operations = {
+static const struct file_operations proc_devinfo_operations = {
 	.open		= devinfo_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -337,7 +332,7 @@ static int vmstat_open(struct inode *inode, struct file *file)
 {
 	return seq_open(file, &vmstat_op);
 }
-static struct file_operations proc_vmstat_file_operations = {
+static const struct file_operations proc_vmstat_file_operations = {
 	.open		= vmstat_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -368,7 +363,7 @@ static int partitions_open(struct inode *inode, struct file *file)
 {
 	return seq_open(file, &partitions_op);
 }
-static struct file_operations proc_partitions_operations = {
+static const struct file_operations proc_partitions_operations = {
 	.open		= partitions_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -380,7 +375,7 @@ static int diskstats_open(struct inode *inode, struct file *file)
 {
 	return seq_open(file, &diskstats_op);
 }
-static struct file_operations proc_diskstats_operations = {
+static const struct file_operations proc_diskstats_operations = {
 	.open		= diskstats_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -394,7 +389,7 @@ static int modules_open(struct inode *inode, struct file *file)
 {
 	return seq_open(file, &modules_op);
 }
-static struct file_operations proc_modules_operations = {
+static const struct file_operations proc_modules_operations = {
 	.open		= modules_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -409,7 +404,7 @@ static int slabinfo_open(struct inode *inode, struct file *file)
 {
 	return seq_open(file, &slabinfo_op);
 }
-static struct file_operations proc_slabinfo_operations = {
+static const struct file_operations proc_slabinfo_operations = {
 	.open		= slabinfo_open,
 	.read		= seq_read,
 	.write		= slabinfo_write,
@@ -443,7 +438,7 @@ static int slabstats_release(struct inode *inode, struct file *file)
 	return seq_release(inode, file);
 }
 
-static struct file_operations proc_slabstats_operations = {
+static const struct file_operations proc_slabstats_operations = {
 	.open		= slabstats_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -556,7 +551,7 @@ static int stat_open(struct inode *inode, struct file *file)
 		kfree(buf);
 	return res;
 }
-static struct file_operations proc_stat_operations = {
+static const struct file_operations proc_stat_operations = {
 	.open		= stat_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -598,7 +593,7 @@ static int interrupts_open(struct inode *inode, struct file *filp)
 	return seq_open(filp, &int_seq_ops);
 }
 
-static struct file_operations proc_interrupts_operations = {
+static const struct file_operations proc_interrupts_operations = {
 	.open		= interrupts_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -655,7 +650,7 @@ static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
 	return count;
 }
 
-static struct file_operations proc_sysrq_trigger_operations = {
+static const struct file_operations proc_sysrq_trigger_operations = {
 	.write		= write_sysrq_trigger,
 };
 #endif
@@ -672,7 +667,6 @@ void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
 
 void __init proc_misc_init(void)
 {
-	struct proc_dir_entry *entry;
 	static struct {
 		char *name;
 		int (*read_proc)(char*,char**,off_t,int,int*,void*);
@@ -700,9 +694,12 @@ void __init proc_misc_init(void)
 
 	/* And now for trickier ones */
 #ifdef CONFIG_PRINTK
-	entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
-	if (entry)
-		entry->proc_fops = &proc_kmsg_operations;
+	{
+		struct proc_dir_entry *entry;
+		entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
+		if (entry)
+			entry->proc_fops = &proc_kmsg_operations;
+	}
 #endif
 	create_seq_entry("devices", 0, &proc_devinfo_operations);
 	create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
@@ -743,8 +740,11 @@ void __init proc_misc_init(void)
 		proc_vmcore->proc_fops = &proc_vmcore_operations;
 #endif
 #ifdef CONFIG_MAGIC_SYSRQ
-	entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
-	if (entry)
-		entry->proc_fops = &proc_sysrq_trigger_operations;
+	{
+		struct proc_dir_entry *entry;
+		entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
+		if (entry)
+			entry->proc_fops = &proc_sysrq_trigger_operations;
+	}
 #endif
 }
diff --git a/fs/proc/proc_tty.c b/fs/proc/proc_tty.c
index 15c4455..c1bbfbe 100644
--- a/fs/proc/proc_tty.c
+++ b/fs/proc/proc_tty.c
@@ -138,7 +138,7 @@ static int tty_drivers_open(struct inode *inode, struct file *file)
 	return seq_open(file, &tty_drivers_op);
 }
 
-static struct file_operations proc_tty_drivers_operations = {
+static const struct file_operations proc_tty_drivers_operations = {
 	.open		= tty_drivers_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 64d242b6..af15445 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -136,7 +136,7 @@ static int proc_root_readdir(struct file * filp,
  * <pid> directories. Thus we don't use the generic
  * directory handling functions for that..
  */
-static struct file_operations proc_root_operations = {
+static const struct file_operations proc_root_operations = {
 	.read		 = generic_read_dir,
 	.readdir	 = proc_root_readdir,
 };
@@ -144,7 +144,7 @@ static struct file_operations proc_root_operations = {
 /*
  * proc root can do almost nothing..
  */
-static struct inode_operations proc_root_inode_operations = {
+static const struct inode_operations proc_root_inode_operations = {
 	.lookup		= proc_root_lookup,
 	.getattr	= proc_root_getattr,
 };
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 55ade0d..7445980 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -434,7 +434,7 @@ static int maps_open(struct inode *inode, struct file *file)
 	return do_maps_open(inode, file, &proc_pid_maps_op);
 }
 
-struct file_operations proc_maps_operations = {
+const struct file_operations proc_maps_operations = {
 	.open		= maps_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -456,7 +456,7 @@ static int numa_maps_open(struct inode *inode, struct file *file)
 	return do_maps_open(inode, file, &proc_pid_numa_maps_op);
 }
 
-struct file_operations proc_numa_maps_operations = {
+const struct file_operations proc_numa_maps_operations = {
 	.open		= numa_maps_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -469,7 +469,7 @@ static int smaps_open(struct inode *inode, struct file *file)
 	return do_maps_open(inode, file, &proc_pid_smaps_op);
 }
 
-struct file_operations proc_smaps_operations = {
+const struct file_operations proc_smaps_operations = {
 	.open		= smaps_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index fcc5caf..7cddf6b 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -220,7 +220,7 @@ static int maps_open(struct inode *inode, struct file *file)
 	return ret;
 }
 
-struct file_operations proc_maps_operations = {
+const struct file_operations proc_maps_operations = {
 	.open		= maps_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/fs/qnx4/dir.c b/fs/qnx4/dir.c
index c94db1d..ea9ffef 100644
--- a/fs/qnx4/dir.c
+++ b/fs/qnx4/dir.c
@@ -87,7 +87,7 @@ const struct file_operations qnx4_dir_operations =
 	.fsync		= file_fsync,
 };
 
-struct inode_operations qnx4_dir_inode_operations =
+const struct inode_operations qnx4_dir_inode_operations =
 {
 	.lookup		= qnx4_lookup,
 #ifdef CONFIG_QNX4FS_RW
diff --git a/fs/qnx4/file.c b/fs/qnx4/file.c
index 467e5ac..4464998 100644
--- a/fs/qnx4/file.c
+++ b/fs/qnx4/file.c
@@ -33,7 +33,7 @@ const struct file_operations qnx4_file_operations =
 #endif
 };
 
-struct inode_operations qnx4_file_inode_operations =
+const struct inode_operations qnx4_file_inode_operations =
 {
 #ifdef CONFIG_QNX4FS_RW
 	.truncate	= qnx4_truncate,
diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index c047dc6..83bc8e7 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -30,7 +30,7 @@
 #define QNX4_VERSION  4
 #define QNX4_BMNAME   ".bitmap"
 
-static struct super_operations qnx4_sops;
+static const struct super_operations qnx4_sops;
 
 #ifdef CONFIG_QNX4FS_RW
 
@@ -129,7 +129,7 @@ static void qnx4_read_inode(struct inode *);
 static int qnx4_remount(struct super_block *sb, int *flags, char *data);
 static int qnx4_statfs(struct dentry *, struct kstatfs *);
 
-static struct super_operations qnx4_sops =
+static const struct super_operations qnx4_sops =
 {
 	.alloc_inode	= qnx4_alloc_inode,
 	.destroy_inode	= qnx4_destroy_inode,
diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c
index 54ebbc8..2f14774 100644
--- a/fs/ramfs/file-mmu.c
+++ b/fs/ramfs/file-mmu.c
@@ -31,7 +31,7 @@ const struct address_space_operations ramfs_aops = {
 	.readpage	= simple_readpage,
 	.prepare_write	= simple_prepare_write,
 	.commit_write	= simple_commit_write,
-	.set_page_dirty = __set_page_dirty_nobuffers,
+	.set_page_dirty = __set_page_dirty_no_writeback,
 };
 
 const struct file_operations ramfs_file_operations = {
@@ -45,6 +45,6 @@ const struct file_operations ramfs_file_operations = {
 	.llseek		= generic_file_llseek,
 };
 
-struct inode_operations ramfs_file_inode_operations = {
+const struct inode_operations ramfs_file_inode_operations = {
 	.getattr	= simple_getattr,
 };
diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index e9d6c47..d3fd7c6 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -32,7 +32,7 @@ const struct address_space_operations ramfs_aops = {
 	.readpage		= simple_readpage,
 	.prepare_write		= simple_prepare_write,
 	.commit_write		= simple_commit_write,
-	.set_page_dirty = __set_page_dirty_nobuffers,
+	.set_page_dirty		= __set_page_dirty_no_writeback,
 };
 
 const struct file_operations ramfs_file_operations = {
@@ -47,7 +47,7 @@ const struct file_operations ramfs_file_operations = {
 	.llseek			= generic_file_llseek,
 };
 
-struct inode_operations ramfs_file_inode_operations = {
+const struct inode_operations ramfs_file_inode_operations = {
 	.setattr		= ramfs_nommu_setattr,
 	.getattr		= simple_getattr,
 };
diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c
index 2faf4cd..ff1f763 100644
--- a/fs/ramfs/inode.c
+++ b/fs/ramfs/inode.c
@@ -40,8 +40,8 @@
 /* some random number */
 #define RAMFS_MAGIC	0x858458f6
 
-static struct super_operations ramfs_ops;
-static struct inode_operations ramfs_dir_inode_operations;
+static const struct super_operations ramfs_ops;
+static const struct inode_operations ramfs_dir_inode_operations;
 
 static struct backing_dev_info ramfs_backing_dev_info = {
 	.ra_pages	= 0,	/* No readahead */
@@ -143,7 +143,7 @@ static int ramfs_symlink(struct inode * dir, struct dentry *dentry, const char *
 	return error;
 }
 
-static struct inode_operations ramfs_dir_inode_operations = {
+static const struct inode_operations ramfs_dir_inode_operations = {
 	.create		= ramfs_create,
 	.lookup		= simple_lookup,
 	.link		= simple_link,
@@ -155,7 +155,7 @@ static struct inode_operations ramfs_dir_inode_operations = {
 	.rename		= simple_rename,
 };
 
-static struct super_operations ramfs_ops = {
+static const struct super_operations ramfs_ops = {
 	.statfs		= simple_statfs,
 	.drop_inode	= generic_delete_inode,
 };
diff --git a/fs/ramfs/internal.h b/fs/ramfs/internal.h
index c2bb58e..af7cc07 100644
--- a/fs/ramfs/internal.h
+++ b/fs/ramfs/internal.h
@@ -12,4 +12,4 @@
 
 extern const struct address_space_operations ramfs_aops;
 extern const struct file_operations ramfs_file_operations;
-extern struct inode_operations ramfs_file_inode_operations;
+extern const struct inode_operations ramfs_file_inode_operations;
diff --git a/fs/read_write.c b/fs/read_write.c
index 707ac21..1f8dc37 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -197,13 +197,13 @@ int rw_verify_area(int read_write, struct file *file, loff_t *ppos, size_t count
 	struct inode *inode;
 	loff_t pos;
 
+	inode = file->f_path.dentry->d_inode;
 	if (unlikely((ssize_t) count < 0))
 		goto Einval;
 	pos = *ppos;
 	if (unlikely((pos < 0) || (loff_t) (pos + count) < 0))
 		goto Einval;
 
-	inode = file->f_path.dentry->d_inode;
 	if (unlikely(inode->i_flock && MANDATORY_LOCK(inode))) {
 		int retval = locks_mandatory_area(
 			read_write == READ ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE,
@@ -274,9 +274,9 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos)
 				ret = do_sync_read(file, buf, count, pos);
 			if (ret > 0) {
 				fsnotify_access(file->f_path.dentry);
-				current->rchar += ret;
+				add_rchar(current, ret);
 			}
-			current->syscr++;
+			inc_syscr(current);
 		}
 	}
 
@@ -332,9 +332,9 @@ ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_
 				ret = do_sync_write(file, buf, count, pos);
 			if (ret > 0) {
 				fsnotify_modify(file->f_path.dentry);
-				current->wchar += ret;
+				add_wchar(current, ret);
 			}
-			current->syscw++;
+			inc_syscw(current);
 		}
 	}
 
@@ -675,8 +675,8 @@ sys_readv(unsigned long fd, const struct iovec __user *vec, unsigned long vlen)
 	}
 
 	if (ret > 0)
-		current->rchar += ret;
-	current->syscr++;
+		add_rchar(current, ret);
+	inc_syscr(current);
 	return ret;
 }
 
@@ -696,8 +696,8 @@ sys_writev(unsigned long fd, const struct iovec __user *vec, unsigned long vlen)
 	}
 
 	if (ret > 0)
-		current->wchar += ret;
-	current->syscw++;
+		add_wchar(current, ret);
+	inc_syscw(current);
 	return ret;
 }
 
@@ -779,12 +779,12 @@ static ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos,
 	retval = in_file->f_op->sendfile(in_file, ppos, count, file_send_actor, out_file);
 
 	if (retval > 0) {
-		current->rchar += retval;
-		current->wchar += retval;
+		add_rchar(current, retval);
+		add_wchar(current, retval);
 	}
-	current->syscr++;
-	current->syscw++;
 
+	inc_syscr(current);
+	inc_syscw(current);
 	if (*ppos > max)
 		retval = -EOVERFLOW;
 
diff --git a/fs/reiserfs/do_balan.c b/fs/reiserfs/do_balan.c
index fba304e..f85c5cf 100644
--- a/fs/reiserfs/do_balan.c
+++ b/fs/reiserfs/do_balan.c
@@ -19,6 +19,7 @@
 #include <linux/time.h>
 #include <linux/reiserfs_fs.h>
 #include <linux/buffer_head.h>
+#include <linux/kernel.h>
 
 #ifdef CONFIG_REISERFS_CHECK
 
@@ -1756,7 +1757,7 @@ static void store_thrown(struct tree_balance *tb, struct buffer_head *bh)
 	if (buffer_dirty(bh))
 		reiserfs_warning(tb->tb_sb,
 				 "store_thrown deals with dirty buffer");
-	for (i = 0; i < sizeof(tb->thrown) / sizeof(tb->thrown[0]); i++)
+	for (i = 0; i < ARRAY_SIZE(tb->thrown); i++)
 		if (!tb->thrown[i]) {
 			tb->thrown[i] = bh;
 			get_bh(bh);	/* free_thrown puts this */
@@ -1769,7 +1770,7 @@ static void free_thrown(struct tree_balance *tb)
 {
 	int i;
 	b_blocknr_t blocknr;
-	for (i = 0; i < sizeof(tb->thrown) / sizeof(tb->thrown[0]); i++) {
+	for (i = 0; i < ARRAY_SIZE(tb->thrown); i++) {
 		if (tb->thrown[i]) {
 			blocknr = tb->thrown[i]->b_blocknr;
 			if (buffer_dirty(tb->thrown[i]))
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index 5109f1d..abfada2 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -1556,7 +1556,7 @@ const struct file_operations reiserfs_file_operations = {
 	.splice_write = generic_file_splice_write,
 };
 
-struct inode_operations reiserfs_file_inode_operations = {
+const struct inode_operations reiserfs_file_inode_operations = {
 	.truncate = reiserfs_vfs_truncate_file,
 	.setattr = reiserfs_setattr,
 	.setxattr = reiserfs_setxattr,
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index 23f5cd5..a216184 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -1525,7 +1525,7 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 /*
  * directories can handle most operations...
  */
-struct inode_operations reiserfs_dir_inode_operations = {
+const struct inode_operations reiserfs_dir_inode_operations = {
 	//&reiserfs_dir_operations,   /* default_file_ops */
 	.create = reiserfs_create,
 	.lookup = reiserfs_lookup,
@@ -1548,7 +1548,7 @@ struct inode_operations reiserfs_dir_inode_operations = {
  * symlink operations.. same as page_symlink_inode_operations, with xattr
  * stuff added
  */
-struct inode_operations reiserfs_symlink_inode_operations = {
+const struct inode_operations reiserfs_symlink_inode_operations = {
 	.readlink = generic_readlink,
 	.follow_link = page_follow_link_light,
 	.put_link = page_put_link,
@@ -1564,7 +1564,7 @@ struct inode_operations reiserfs_symlink_inode_operations = {
 /*
  * special file operations.. just xattr/acl stuff
  */
-struct inode_operations reiserfs_special_inode_operations = {
+const struct inode_operations reiserfs_special_inode_operations = {
 	.setattr = reiserfs_setattr,
 	.setxattr = reiserfs_setxattr,
 	.getxattr = reiserfs_getxattr,
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 58ad455..f13a7f1 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -593,7 +593,7 @@ static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t,
 				   loff_t);
 #endif
 
-static struct super_operations reiserfs_sops = {
+static const struct super_operations reiserfs_sops = {
 	.alloc_inode = reiserfs_alloc_inode,
 	.destroy_inode = reiserfs_destroy_inode,
 	.write_inode = reiserfs_write_inode,
diff --git a/fs/romfs/inode.c b/fs/romfs/inode.c
index d3e243a..fd60101 100644
--- a/fs/romfs/inode.c
+++ b/fs/romfs/inode.c
@@ -110,7 +110,7 @@ romfs_checksum(void *data, int size)
 	return sum;
 }
 
-static struct super_operations romfs_ops;
+static const struct super_operations romfs_ops;
 
 static int romfs_fill_super(struct super_block *s, void *data, int silent)
 {
@@ -468,7 +468,7 @@ static const struct file_operations romfs_dir_operations = {
 	.readdir	= romfs_readdir,
 };
 
-static struct inode_operations romfs_dir_inode_operations = {
+static const struct inode_operations romfs_dir_inode_operations = {
 	.lookup		= romfs_lookup,
 };
 
@@ -598,7 +598,7 @@ static int romfs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations romfs_ops = {
+static const struct super_operations romfs_ops = {
 	.alloc_inode	= romfs_alloc_inode,
 	.destroy_inode	= romfs_destroy_inode,
 	.read_inode	= romfs_read_inode,
diff --git a/fs/smbfs/dir.c b/fs/smbfs/dir.c
index b1e58d1..50136b1 100644
--- a/fs/smbfs/dir.c
+++ b/fs/smbfs/dir.c
@@ -42,7 +42,7 @@ const struct file_operations smb_dir_operations =
 	.open		= smb_dir_open,
 };
 
-struct inode_operations smb_dir_inode_operations =
+const struct inode_operations smb_dir_inode_operations =
 {
 	.create		= smb_create,
 	.lookup		= smb_lookup,
@@ -54,7 +54,7 @@ struct inode_operations smb_dir_inode_operations =
 	.setattr	= smb_notify_change,
 };
 
-struct inode_operations smb_dir_inode_operations_unix =
+const struct inode_operations smb_dir_inode_operations_unix =
 {
 	.create		= smb_create,
 	.lookup		= smb_lookup,
diff --git a/fs/smbfs/file.c b/fs/smbfs/file.c
index e50533a..f161797 100644
--- a/fs/smbfs/file.c
+++ b/fs/smbfs/file.c
@@ -418,7 +418,7 @@ const struct file_operations smb_file_operations =
 	.sendfile	= smb_file_sendfile,
 };
 
-struct inode_operations smb_file_inode_operations =
+const struct inode_operations smb_file_inode_operations =
 {
 	.permission	= smb_file_permission,
 	.getattr	= smb_getattr,
diff --git a/fs/smbfs/inode.c b/fs/smbfs/inode.c
index 84dfe3f..5faba4f 100644
--- a/fs/smbfs/inode.c
+++ b/fs/smbfs/inode.c
@@ -98,7 +98,7 @@ static int smb_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations smb_sops =
+static const struct super_operations smb_sops =
 {
 	.alloc_inode	= smb_alloc_inode,
 	.destroy_inode	= smb_destroy_inode,
diff --git a/fs/smbfs/proto.h b/fs/smbfs/proto.h
index 34fb462..03f456c 100644
--- a/fs/smbfs/proto.h
+++ b/fs/smbfs/proto.h
@@ -36,8 +36,8 @@ extern int smb_proc_link(struct smb_sb_info *server, struct dentry *dentry, stru
 extern void smb_install_null_ops(struct smb_ops *ops);
 /* dir.c */
 extern const struct file_operations smb_dir_operations;
-extern struct inode_operations smb_dir_inode_operations;
-extern struct inode_operations smb_dir_inode_operations_unix;
+extern const struct inode_operations smb_dir_inode_operations;
+extern const struct inode_operations smb_dir_inode_operations_unix;
 extern void smb_new_dentry(struct dentry *dentry);
 extern void smb_renew_times(struct dentry *dentry);
 /* cache.c */
@@ -65,7 +65,7 @@ extern int smb_notify_change(struct dentry *dentry, struct iattr *attr);
 /* file.c */
 extern const struct address_space_operations smb_file_aops;
 extern const struct file_operations smb_file_operations;
-extern struct inode_operations smb_file_inode_operations;
+extern const struct inode_operations smb_file_inode_operations;
 /* ioctl.c */
 extern int smb_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
 /* smbiod.c */
@@ -84,4 +84,4 @@ extern int smb_request_send_server(struct smb_sb_info *server);
 extern int smb_request_recv(struct smb_sb_info *server);
 /* symlink.c */
 extern int smb_symlink(struct inode *inode, struct dentry *dentry, const char *oldname);
-extern struct inode_operations smb_link_inode_operations;
+extern const struct inode_operations smb_link_inode_operations;
diff --git a/fs/smbfs/request.c b/fs/smbfs/request.c
index a4bcae8..42261db 100644
--- a/fs/smbfs/request.c
+++ b/fs/smbfs/request.c
@@ -61,7 +61,7 @@ static struct smb_request *smb_do_alloc_request(struct smb_sb_info *server,
 	struct smb_request *req;
 	unsigned char *buf = NULL;
 
-	req = kmem_cache_alloc(req_cachep, GFP_KERNEL);
+	req = kmem_cache_zalloc(req_cachep, GFP_KERNEL);
 	VERBOSE("allocating request: %p\n", req);
 	if (!req)
 		goto out;
@@ -74,7 +74,6 @@ static struct smb_request *smb_do_alloc_request(struct smb_sb_info *server,
 		}
 	}
 
-	memset(req, 0, sizeof(struct smb_request));
 	req->rq_buffer = buf;
 	req->rq_bufsize = bufsize;
 	req->rq_server = server;
diff --git a/fs/smbfs/symlink.c b/fs/smbfs/symlink.c
index cdc53c4..e4bf345 100644
--- a/fs/smbfs/symlink.c
+++ b/fs/smbfs/symlink.c
@@ -62,7 +62,7 @@ static void smb_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
 		__putname(s);
 }
 
-struct inode_operations smb_link_inode_operations =
+const struct inode_operations smb_link_inode_operations =
 {
 	.readlink	= generic_readlink,
 	.follow_link	= smb_follow_link,
diff --git a/fs/super.c b/fs/super.c
index 3e7458c..60b1e50 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -285,7 +285,7 @@ int fsync_super(struct super_block *sb)
  */
 void generic_shutdown_super(struct super_block *sb)
 {
-	struct super_operations *sop = sb->s_op;
+	const struct super_operations *sop = sb->s_op;
 
 	if (sb->s_root) {
 		shrink_dcache_for_umount(sb);
diff --git a/fs/sysfs/bin.c b/fs/sysfs/bin.c
index e8f540d..d3b9f5f 100644
--- a/fs/sysfs/bin.c
+++ b/fs/sysfs/bin.c
@@ -16,6 +16,7 @@
 #include <linux/slab.h>
 
 #include <asm/uaccess.h>
+#include <asm/semaphore.h>
 
 #include "sysfs.h"
 
@@ -146,7 +147,7 @@ static int open(struct inode * inode, struct file * file)
  Error:
 	module_put(attr->attr.owner);
  Done:
-	if (error && kobj)
+	if (error)
 		kobject_put(kobj);
 	return error;
 }
@@ -157,8 +158,7 @@ static int release(struct inode * inode, struct file * file)
 	struct bin_attribute * attr = to_bin_attr(file->f_path.dentry);
 	u8 * buffer = file->private_data;
 
-	if (kobj) 
-		kobject_put(kobj);
+	kobject_put(kobj);
 	module_put(attr->attr.owner);
 	kfree(buffer);
 	return 0;
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 511edef..8813990 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -9,6 +9,7 @@
 #include <linux/module.h>
 #include <linux/kobject.h>
 #include <linux/namei.h>
+#include <asm/semaphore.h>
 #include "sysfs.h"
 
 DECLARE_RWSEM(sysfs_rename_sem);
@@ -32,25 +33,39 @@ static struct dentry_operations sysfs_dentry_ops = {
 /*
  * Allocates a new sysfs_dirent and links it to the parent sysfs_dirent
  */
-static struct sysfs_dirent * sysfs_new_dirent(struct sysfs_dirent * parent_sd,
-						void * element)
+static struct sysfs_dirent * __sysfs_new_dirent(void * element)
 {
 	struct sysfs_dirent * sd;
 
-	sd = kmem_cache_alloc(sysfs_dir_cachep, GFP_KERNEL);
+	sd = kmem_cache_zalloc(sysfs_dir_cachep, GFP_KERNEL);
 	if (!sd)
 		return NULL;
 
-	memset(sd, 0, sizeof(*sd));
 	atomic_set(&sd->s_count, 1);
 	atomic_set(&sd->s_event, 1);
 	INIT_LIST_HEAD(&sd->s_children);
-	list_add(&sd->s_sibling, &parent_sd->s_children);
+	INIT_LIST_HEAD(&sd->s_sibling);
 	sd->s_element = element;
 
 	return sd;
 }
 
+static void __sysfs_list_dirent(struct sysfs_dirent *parent_sd,
+			      struct sysfs_dirent *sd)
+{
+	if (sd)
+		list_add(&sd->s_sibling, &parent_sd->s_children);
+}
+
+static struct sysfs_dirent * sysfs_new_dirent(struct sysfs_dirent *parent_sd,
+						void * element)
+{
+	struct sysfs_dirent *sd;
+	sd = __sysfs_new_dirent(element);
+	__sysfs_list_dirent(parent_sd, sd);
+	return sd;
+}
+
 /*
  *
  * Return -EEXIST if there is already a sysfs element with the same name for
@@ -77,14 +92,14 @@ int sysfs_dirent_exist(struct sysfs_dirent *parent_sd,
 }
 
 
-int sysfs_make_dirent(struct sysfs_dirent * parent_sd, struct dentry * dentry,
-			void * element, umode_t mode, int type)
+static struct sysfs_dirent *
+__sysfs_make_dirent(struct dentry *dentry, void *element, mode_t mode, int type)
 {
 	struct sysfs_dirent * sd;
 
-	sd = sysfs_new_dirent(parent_sd, element);
+	sd = __sysfs_new_dirent(element);
 	if (!sd)
-		return -ENOMEM;
+		goto out;
 
 	sd->s_mode = mode;
 	sd->s_type = type;
@@ -94,7 +109,19 @@ int sysfs_make_dirent(struct sysfs_dirent * parent_sd, struct dentry * dentry,
 		dentry->d_op = &sysfs_dentry_ops;
 	}
 
-	return 0;
+out:
+	return sd;
+}
+
+int sysfs_make_dirent(struct sysfs_dirent * parent_sd, struct dentry * dentry,
+			void * element, umode_t mode, int type)
+{
+	struct sysfs_dirent *sd;
+
+	sd = __sysfs_make_dirent(dentry, element, mode, type);
+	__sysfs_list_dirent(parent_sd, sd);
+
+	return sd ? 0 : -ENOMEM;
 }
 
 static int init_dir(struct inode * inode)
@@ -165,11 +192,11 @@ int sysfs_create_subdir(struct kobject * k, const char * n, struct dentry ** d)
 
 /**
  *	sysfs_create_dir - create a directory for an object.
- *	@parent:	parent parent object.
  *	@kobj:		object we're creating directory for. 
+ *	@shadow_parent:	parent parent object.
  */
 
-int sysfs_create_dir(struct kobject * kobj)
+int sysfs_create_dir(struct kobject * kobj, struct dentry *shadow_parent)
 {
 	struct dentry * dentry = NULL;
 	struct dentry * parent;
@@ -177,7 +204,9 @@ int sysfs_create_dir(struct kobject * kobj)
 
 	BUG_ON(!kobj);
 
-	if (kobj->parent)
+	if (shadow_parent)
+		parent = shadow_parent;
+	else if (kobj->parent)
 		parent = kobj->parent->dentry;
 	else if (sysfs_mount && sysfs_mount->mnt_sb)
 		parent = sysfs_mount->mnt_sb->s_root;
@@ -267,7 +296,7 @@ static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
 	return ERR_PTR(err);
 }
 
-struct inode_operations sysfs_dir_inode_operations = {
+const struct inode_operations sysfs_dir_inode_operations = {
 	.lookup		= sysfs_lookup,
 	.setattr	= sysfs_setattr,
 };
@@ -298,21 +327,12 @@ void sysfs_remove_subdir(struct dentry * d)
 }
 
 
-/**
- *	sysfs_remove_dir - remove an object's directory.
- *	@kobj:	object. 
- *
- *	The only thing special about this is that we remove any files in 
- *	the directory before we remove the directory, and we've inlined
- *	what used to be sysfs_rmdir() below, instead of calling separately.
- */
-
-void sysfs_remove_dir(struct kobject * kobj)
+static void __sysfs_remove_dir(struct dentry *dentry)
 {
-	struct dentry * dentry = dget(kobj->dentry);
 	struct sysfs_dirent * parent_sd;
 	struct sysfs_dirent * sd, * tmp;
 
+	dget(dentry);
 	if (!dentry)
 		return;
 
@@ -333,32 +353,60 @@ void sysfs_remove_dir(struct kobject * kobj)
 	 * Drop reference from dget() on entrance.
 	 */
 	dput(dentry);
+}
+
+/**
+ *	sysfs_remove_dir - remove an object's directory.
+ *	@kobj:	object.
+ *
+ *	The only thing special about this is that we remove any files in
+ *	the directory before we remove the directory, and we've inlined
+ *	what used to be sysfs_rmdir() below, instead of calling separately.
+ */
+
+void sysfs_remove_dir(struct kobject * kobj)
+{
+	__sysfs_remove_dir(kobj->dentry);
 	kobj->dentry = NULL;
 }
 
-int sysfs_rename_dir(struct kobject * kobj, const char *new_name)
+int sysfs_rename_dir(struct kobject * kobj, struct dentry *new_parent,
+		     const char *new_name)
 {
 	int error = 0;
-	struct dentry * new_dentry, * parent;
-
-	if (!strcmp(kobject_name(kobj), new_name))
-		return -EINVAL;
+	struct dentry * new_dentry;
 
-	if (!kobj->parent)
-		return -EINVAL;
+	if (!new_parent)
+		return -EFAULT;
 
 	down_write(&sysfs_rename_sem);
-	parent = kobj->parent->dentry;
-
-	mutex_lock(&parent->d_inode->i_mutex);
+	mutex_lock(&new_parent->d_inode->i_mutex);
 
-	new_dentry = lookup_one_len(new_name, parent, strlen(new_name));
+	new_dentry = lookup_one_len(new_name, new_parent, strlen(new_name));
 	if (!IS_ERR(new_dentry)) {
-  		if (!new_dentry->d_inode) {
+		/* By allowing two different directories with the
+		 * same d_parent we allow this routine to move
+		 * between different shadows of the same directory
+		 */
+		if (kobj->dentry->d_parent->d_inode != new_parent->d_inode)
+			return -EINVAL;
+		else if (new_dentry->d_parent->d_inode != new_parent->d_inode)
+			error = -EINVAL;
+		else if (new_dentry == kobj->dentry)
+			error = -EINVAL;
+		else if (!new_dentry->d_inode) {
 			error = kobject_set_name(kobj, "%s", new_name);
 			if (!error) {
+				struct sysfs_dirent *sd, *parent_sd;
+
 				d_add(new_dentry, NULL);
 				d_move(kobj->dentry, new_dentry);
+
+				sd = kobj->dentry->d_fsdata;
+				parent_sd = new_parent->d_fsdata;
+
+				list_del_init(&sd->s_sibling);
+				list_add(&sd->s_sibling, &parent_sd->s_children);
 			}
 			else
 				d_drop(new_dentry);
@@ -366,7 +414,7 @@ int sysfs_rename_dir(struct kobject * kobj, const char *new_name)
 			error = -EEXIST;
 		dput(new_dentry);
 	}
-	mutex_unlock(&parent->d_inode->i_mutex);
+	mutex_unlock(&new_parent->d_inode->i_mutex);
 	up_write(&sysfs_rename_sem);
 
 	return error;
@@ -378,12 +426,10 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent)
 	struct sysfs_dirent *new_parent_sd, *sd;
 	int error;
 
-	if (!new_parent)
-		return -EINVAL;
-
 	old_parent_dentry = kobj->parent ?
 		kobj->parent->dentry : sysfs_mount->mnt_sb->s_root;
-	new_parent_dentry = new_parent->dentry;
+	new_parent_dentry = new_parent ?
+		new_parent->dentry : sysfs_mount->mnt_sb->s_root;
 
 again:
 	mutex_lock(&old_parent_dentry->d_inode->i_mutex);
@@ -547,6 +593,95 @@ static loff_t sysfs_dir_lseek(struct file * file, loff_t offset, int origin)
 	return offset;
 }
 
+
+/**
+ *	sysfs_make_shadowed_dir - Setup so a directory can be shadowed
+ *	@kobj:	object we're creating shadow of.
+ */
+
+int sysfs_make_shadowed_dir(struct kobject *kobj,
+	void * (*follow_link)(struct dentry *, struct nameidata *))
+{
+	struct inode *inode;
+	struct inode_operations *i_op;
+
+	inode = kobj->dentry->d_inode;
+	if (inode->i_op != &sysfs_dir_inode_operations)
+		return -EINVAL;
+
+	i_op = kmalloc(sizeof(*i_op), GFP_KERNEL);
+	if (!i_op)
+		return -ENOMEM;
+
+	memcpy(i_op, &sysfs_dir_inode_operations, sizeof(*i_op));
+	i_op->follow_link = follow_link;
+
+	/* Locking of inode->i_op?
+	 * Since setting i_op is a single word write and they
+	 * are atomic we should be ok here.
+	 */
+	inode->i_op = i_op;
+	return 0;
+}
+
+/**
+ *	sysfs_create_shadow_dir - create a shadow directory for an object.
+ *	@kobj:	object we're creating directory for.
+ *
+ *	sysfs_make_shadowed_dir must already have been called on this
+ *	directory.
+ */
+
+struct dentry *sysfs_create_shadow_dir(struct kobject *kobj)
+{
+	struct sysfs_dirent *sd;
+	struct dentry *parent, *dir, *shadow;
+	struct inode *inode;
+
+	dir = kobj->dentry;
+	inode = dir->d_inode;
+	parent = dir->d_parent;
+	shadow = ERR_PTR(-EINVAL);
+	if (!sysfs_is_shadowed_inode(inode))
+		goto out;
+
+	shadow = d_alloc(parent, &dir->d_name);
+	if (!shadow)
+		goto nomem;
+
+	sd = __sysfs_make_dirent(shadow, kobj, inode->i_mode, SYSFS_DIR);
+	if (!sd)
+		goto nomem;
+
+	d_instantiate(shadow, igrab(inode));
+	inc_nlink(inode);
+	inc_nlink(parent->d_inode);
+	shadow->d_op = &sysfs_dentry_ops;
+
+	dget(shadow);		/* Extra count - pin the dentry in core */
+
+out:
+	return shadow;
+nomem:
+	dput(shadow);
+	shadow = ERR_PTR(-ENOMEM);
+	goto out;
+}
+
+/**
+ *	sysfs_remove_shadow_dir - remove an object's directory.
+ *	@shadow: dentry of shadow directory
+ *
+ *	The only thing special about this is that we remove any files in
+ *	the directory before we remove the directory, and we've inlined
+ *	what used to be sysfs_rmdir() below, instead of calling separately.
+ */
+
+void sysfs_remove_shadow_dir(struct dentry *shadow)
+{
+	__sysfs_remove_dir(shadow);
+}
+
 const struct file_operations sysfs_dir_operations = {
 	.open		= sysfs_dir_open,
 	.release	= sysfs_dir_close,
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 9cfe53e..c0e1176 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -7,6 +7,7 @@
 #include <linux/kobject.h>
 #include <linux/namei.h>
 #include <linux/poll.h>
+#include <linux/list.h>
 #include <asm/uaccess.h>
 #include <asm/semaphore.h>
 
@@ -50,17 +51,29 @@ static struct sysfs_ops subsys_sysfs_ops = {
 	.store	= subsys_attr_store,
 };
 
+/**
+ *	add_to_collection - add buffer to a collection
+ *	@buffer:	buffer to be added
+ *	@node		inode of set to add to
+ */
 
-struct sysfs_buffer {
-	size_t			count;
-	loff_t			pos;
-	char			* page;
-	struct sysfs_ops	* ops;
-	struct semaphore	sem;
-	int			needs_read_fill;
-	int			event;
-};
+static inline void
+add_to_collection(struct sysfs_buffer *buffer, struct inode *node)
+{
+	struct sysfs_buffer_collection *set = node->i_private;
 
+	mutex_lock(&node->i_mutex);
+	list_add(&buffer->associates, &set->associates);
+	mutex_unlock(&node->i_mutex);
+}
+
+static inline void
+remove_from_collection(struct sysfs_buffer *buffer, struct inode *node)
+{
+	mutex_lock(&node->i_mutex);
+	list_del(&buffer->associates);
+	mutex_unlock(&node->i_mutex);
+}
 
 /**
  *	fill_read_buffer - allocate and fill buffer from object.
@@ -70,7 +83,8 @@ struct sysfs_buffer {
  *	Allocate @buffer->page, if it hasn't been already, then call the
  *	kobject's show() method to fill the buffer with this attribute's 
  *	data. 
- *	This is called only once, on the file's first read. 
+ *	This is called only once, on the file's first read unless an error
+ *	is returned.
  */
 static int fill_read_buffer(struct dentry * dentry, struct sysfs_buffer * buffer)
 {
@@ -88,12 +102,13 @@ static int fill_read_buffer(struct dentry * dentry, struct sysfs_buffer * buffer
 
 	buffer->event = atomic_read(&sd->s_event);
 	count = ops->show(kobj,attr,buffer->page);
-	buffer->needs_read_fill = 0;
 	BUG_ON(count > (ssize_t)PAGE_SIZE);
-	if (count >= 0)
+	if (count >= 0) {
+		buffer->needs_read_fill = 0;
 		buffer->count = count;
-	else
+	} else {
 		ret = count;
+	}
 	return ret;
 }
 
@@ -153,6 +168,10 @@ sysfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 	ssize_t retval = 0;
 
 	down(&buffer->sem);
+	if (buffer->orphaned) {
+		retval = -ENODEV;
+		goto out;
+	}
 	if (buffer->needs_read_fill) {
 		if ((retval = fill_read_buffer(file->f_path.dentry,buffer)))
 			goto out;
@@ -165,7 +184,6 @@ out:
 	return retval;
 }
 
-
 /**
  *	fill_write_buffer - copy buffer from userspace.
  *	@buffer:	data buffer for file.
@@ -243,19 +261,25 @@ sysfs_write_file(struct file *file, const char __user *buf, size_t count, loff_t
 	ssize_t len;
 
 	down(&buffer->sem);
+	if (buffer->orphaned) {
+		len = -ENODEV;
+		goto out;
+	}
 	len = fill_write_buffer(buffer, buf, count);
 	if (len > 0)
 		len = flush_write_buffer(file->f_path.dentry, buffer, len);
 	if (len > 0)
 		*ppos += len;
+out:
 	up(&buffer->sem);
 	return len;
 }
 
-static int check_perm(struct inode * inode, struct file * file)
+static int sysfs_open_file(struct inode *inode, struct file *file)
 {
 	struct kobject *kobj = sysfs_get_kobject(file->f_path.dentry->d_parent);
 	struct attribute * attr = to_attr(file->f_path.dentry);
+	struct sysfs_buffer_collection *set;
 	struct sysfs_buffer * buffer;
 	struct sysfs_ops * ops = NULL;
 	int error = 0;
@@ -285,6 +309,18 @@ static int check_perm(struct inode * inode, struct file * file)
 	if (!ops)
 		goto Eaccess;
 
+	/* make sure we have a collection to add our buffers to */
+	mutex_lock(&inode->i_mutex);
+	if (!(set = inode->i_private)) {
+		if (!(set = inode->i_private = kmalloc(sizeof(struct sysfs_buffer_collection), GFP_KERNEL))) {
+			error = -ENOMEM;
+			goto Done;
+		} else {
+			INIT_LIST_HEAD(&set->associates);
+		}
+	}
+	mutex_unlock(&inode->i_mutex);
+
 	/* File needs write support.
 	 * The inode's perms must say it's ok, 
 	 * and we must have a store method.
@@ -310,9 +346,11 @@ static int check_perm(struct inode * inode, struct file * file)
 	 */
 	buffer = kzalloc(sizeof(struct sysfs_buffer), GFP_KERNEL);
 	if (buffer) {
+		INIT_LIST_HEAD(&buffer->associates);
 		init_MUTEX(&buffer->sem);
 		buffer->needs_read_fill = 1;
 		buffer->ops = ops;
+		add_to_collection(buffer, inode);
 		file->private_data = buffer;
 	} else
 		error = -ENOMEM;
@@ -325,16 +363,11 @@ static int check_perm(struct inode * inode, struct file * file)
 	error = -EACCES;
 	module_put(attr->owner);
  Done:
-	if (error && kobj)
+	if (error)
 		kobject_put(kobj);
 	return error;
 }
 
-static int sysfs_open_file(struct inode * inode, struct file * filp)
-{
-	return check_perm(inode,filp);
-}
-
 static int sysfs_release(struct inode * inode, struct file * filp)
 {
 	struct kobject * kobj = to_kobj(filp->f_path.dentry->d_parent);
@@ -342,8 +375,9 @@ static int sysfs_release(struct inode * inode, struct file * filp)
 	struct module * owner = attr->owner;
 	struct sysfs_buffer * buffer = filp->private_data;
 
-	if (kobj) 
-		kobject_put(kobj);
+	if (buffer)
+		remove_from_collection(buffer, inode);
+	kobject_put(kobj);
 	/* After this point, attr should not be accessed. */
 	module_put(owner);
 
@@ -548,7 +582,7 @@ EXPORT_SYMBOL_GPL(sysfs_chmod_file);
 
 void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr)
 {
-	sysfs_hash_and_remove(kobj->dentry,attr->name);
+	sysfs_hash_and_remove(kobj->dentry, attr->name);
 }
 
 
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index 122145b..b20951c 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -13,6 +13,8 @@
 #include <linux/dcache.h>
 #include <linux/namei.h>
 #include <linux/err.h>
+#include <linux/fs.h>
+#include <asm/semaphore.h>
 #include "sysfs.h"
 
 
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index e79e38d..dd1344b 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -13,6 +13,7 @@
 #include <linux/backing-dev.h>
 #include <linux/capability.h>
 #include <linux/errno.h>
+#include <asm/semaphore.h>
 #include "sysfs.h"
 
 extern struct super_block * sysfs_sb;
@@ -28,10 +29,20 @@ static struct backing_dev_info sysfs_backing_dev_info = {
 	.capabilities	= BDI_CAP_NO_ACCT_DIRTY | BDI_CAP_NO_WRITEBACK,
 };
 
-static struct inode_operations sysfs_inode_operations ={
+static const struct inode_operations sysfs_inode_operations ={
 	.setattr	= sysfs_setattr,
 };
 
+void sysfs_delete_inode(struct inode *inode)
+{
+	/* Free the shadowed directory inode operations */
+	if (sysfs_is_shadowed_inode(inode)) {
+		kfree(inode->i_op);
+		inode->i_op = NULL;
+	}
+	return generic_delete_inode(inode);
+}
+
 int sysfs_setattr(struct dentry * dentry, struct iattr * iattr)
 {
 	struct inode * inode = dentry->d_inode;
@@ -209,6 +220,22 @@ const unsigned char * sysfs_get_name(struct sysfs_dirent *sd)
 	return NULL;
 }
 
+static inline void orphan_all_buffers(struct inode *node)
+{
+	struct sysfs_buffer_collection *set = node->i_private;
+	struct sysfs_buffer *buf;
+
+	mutex_lock_nested(&node->i_mutex, I_MUTEX_CHILD);
+	if (node->i_private) {
+		list_for_each_entry(buf, &set->associates, associates) {
+			down(&buf->sem);
+			buf->orphaned = 1;
+			up(&buf->sem);
+		}
+	}
+	mutex_unlock(&node->i_mutex);
+}
+
 
 /*
  * Unhashes the dentry corresponding to given sysfs_dirent
@@ -217,16 +244,23 @@ const unsigned char * sysfs_get_name(struct sysfs_dirent *sd)
 void sysfs_drop_dentry(struct sysfs_dirent * sd, struct dentry * parent)
 {
 	struct dentry * dentry = sd->s_dentry;
+	struct inode *inode;
 
 	if (dentry) {
 		spin_lock(&dcache_lock);
 		spin_lock(&dentry->d_lock);
 		if (!(d_unhashed(dentry) && dentry->d_inode)) {
+			inode = dentry->d_inode;
+			spin_lock(&inode->i_lock);
+			__iget(inode);
+			spin_unlock(&inode->i_lock);
 			dget_locked(dentry);
 			__d_drop(dentry);
 			spin_unlock(&dentry->d_lock);
 			spin_unlock(&dcache_lock);
 			simple_unlink(parent->d_inode, dentry);
+			orphan_all_buffers(inode);
+			iput(inode);
 		} else {
 			spin_unlock(&dentry->d_lock);
 			spin_unlock(&dcache_lock);
@@ -248,7 +282,7 @@ int sysfs_hash_and_remove(struct dentry * dir, const char * name)
 		return -ENOENT;
 
 	parent_sd = dir->d_fsdata;
-	mutex_lock(&dir->d_inode->i_mutex);
+	mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
 	list_for_each_entry(sd, &parent_sd->s_children, s_sibling) {
 		if (!sd->s_element)
 			continue;
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index e503f85..23a48a3 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -8,6 +8,7 @@
 #include <linux/mount.h>
 #include <linux/pagemap.h>
 #include <linux/init.h>
+#include <asm/semaphore.h>
 
 #include "sysfs.h"
 
@@ -18,9 +19,12 @@ struct vfsmount *sysfs_mount;
 struct super_block * sysfs_sb = NULL;
 struct kmem_cache *sysfs_dir_cachep;
 
-static struct super_operations sysfs_ops = {
+static void sysfs_clear_inode(struct inode *inode);
+
+static const struct super_operations sysfs_ops = {
 	.statfs		= simple_statfs,
-	.drop_inode	= generic_delete_inode,
+	.drop_inode	= sysfs_delete_inode,
+	.clear_inode	= sysfs_clear_inode,
 };
 
 static struct sysfs_dirent sysfs_root = {
@@ -31,6 +35,11 @@ static struct sysfs_dirent sysfs_root = {
 	.s_iattr	= NULL,
 };
 
+static void sysfs_clear_inode(struct inode *inode)
+{
+	kfree(inode->i_private);
+}
+
 static int sysfs_fill_super(struct super_block *sb, void *data, int silent)
 {
 	struct inode *inode;
diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c
index f50e3cc..7b9c5bf 100644
--- a/fs/sysfs/symlink.c
+++ b/fs/sysfs/symlink.c
@@ -7,6 +7,7 @@
 #include <linux/module.h>
 #include <linux/kobject.h>
 #include <linux/namei.h>
+#include <asm/semaphore.h>
 
 #include "sysfs.h"
 
@@ -180,7 +181,7 @@ static void sysfs_put_link(struct dentry *dentry, struct nameidata *nd, void *co
 		free_page((unsigned long)page);
 }
 
-struct inode_operations sysfs_symlink_inode_operations = {
+const struct inode_operations sysfs_symlink_inode_operations = {
 	.readlink = generic_readlink,
 	.follow_link = sysfs_follow_link,
 	.put_link = sysfs_put_link,
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index bd7cec2..d976b00 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -2,6 +2,7 @@
 extern struct vfsmount * sysfs_mount;
 extern struct kmem_cache *sysfs_dir_cachep;
 
+extern void sysfs_delete_inode(struct inode *inode);
 extern struct inode * sysfs_new_inode(mode_t mode, struct sysfs_dirent *);
 extern int sysfs_create(struct dentry *, int mode, int (*init)(struct inode *));
 
@@ -25,14 +26,30 @@ extern struct super_block * sysfs_sb;
 extern const struct file_operations sysfs_dir_operations;
 extern const struct file_operations sysfs_file_operations;
 extern const struct file_operations bin_fops;
-extern struct inode_operations sysfs_dir_inode_operations;
-extern struct inode_operations sysfs_symlink_inode_operations;
+extern const struct inode_operations sysfs_dir_inode_operations;
+extern const struct inode_operations sysfs_symlink_inode_operations;
 
 struct sysfs_symlink {
 	char * link_name;
 	struct kobject * target_kobj;
 };
 
+struct sysfs_buffer {
+	struct list_head		associates;
+	size_t				count;
+	loff_t				pos;
+	char				* page;
+	struct sysfs_ops		* ops;
+	struct semaphore		sem;
+	int				orphaned;
+	int				needs_read_fill;
+	int				event;
+};
+
+struct sysfs_buffer_collection {
+	struct list_head	associates;
+};
+
 static inline struct kobject * to_kobj(struct dentry * dentry)
 {
 	struct sysfs_dirent * sd = dentry->d_fsdata;
@@ -96,3 +113,7 @@ static inline void sysfs_put(struct sysfs_dirent * sd)
 		release_sysfs_dirent(sd);
 }
 
+static inline int sysfs_is_shadowed_inode(struct inode *inode)
+{
+	return S_ISDIR(inode->i_mode) && inode->i_op->follow_link;
+}
diff --git a/fs/sysv/file.c b/fs/sysv/file.c
index 47a4b72..0732ddb 100644
--- a/fs/sysv/file.c
+++ b/fs/sysv/file.c
@@ -30,7 +30,7 @@ const struct file_operations sysv_file_operations = {
 	.sendfile	= generic_file_sendfile,
 };
 
-struct inode_operations sysv_file_inode_operations = {
+const struct inode_operations sysv_file_inode_operations = {
 	.truncate	= sysv_truncate,
 	.getattr	= sysv_getattr,
 };
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index ead9864..9311cac 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -142,7 +142,7 @@ static inline void write3byte(struct sysv_sb_info *sbi,
 	}
 }
 
-static struct inode_operations sysv_symlink_inode_operations = {
+static const struct inode_operations sysv_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
@@ -327,7 +327,7 @@ static void init_once(void *p, struct kmem_cache *cachep, unsigned long flags)
 		inode_init_once(&si->vfs_inode);
 }
 
-struct super_operations sysv_sops = {
+const struct super_operations sysv_sops = {
 	.alloc_inode	= sysv_alloc_inode,
 	.destroy_inode	= sysv_destroy_inode,
 	.read_inode	= sysv_read_inode,
diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c
index f7c08db..4e48abb 100644
--- a/fs/sysv/namei.c
+++ b/fs/sysv/namei.c
@@ -292,7 +292,7 @@ out:
 /*
  * directories can handle most operations...
  */
-struct inode_operations sysv_dir_inode_operations = {
+const struct inode_operations sysv_dir_inode_operations = {
 	.create		= sysv_create,
 	.lookup		= sysv_lookup,
 	.link		= sysv_link,
diff --git a/fs/sysv/symlink.c b/fs/sysv/symlink.c
index b85ce61..00d2f8a 100644
--- a/fs/sysv/symlink.c
+++ b/fs/sysv/symlink.c
@@ -14,7 +14,7 @@ static void *sysv_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return NULL;
 }
 
-struct inode_operations sysv_fast_symlink_inode_operations = {
+const struct inode_operations sysv_fast_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= sysv_follow_link,
 };
diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h
index dcb18b2..5b4fedf 100644
--- a/fs/sysv/sysv.h
+++ b/fs/sysv/sysv.h
@@ -159,13 +159,13 @@ extern struct sysv_dir_entry *sysv_dotdot(struct inode *, struct page **);
 extern ino_t sysv_inode_by_name(struct dentry *);
 
 
-extern struct inode_operations sysv_file_inode_operations;
-extern struct inode_operations sysv_dir_inode_operations;
-extern struct inode_operations sysv_fast_symlink_inode_operations;
+extern const struct inode_operations sysv_file_inode_operations;
+extern const struct inode_operations sysv_dir_inode_operations;
+extern const struct inode_operations sysv_fast_symlink_inode_operations;
 extern const struct file_operations sysv_file_operations;
 extern const struct file_operations sysv_dir_operations;
 extern const struct address_space_operations sysv_aops;
-extern struct super_operations sysv_sops;
+extern const struct super_operations sysv_sops;
 extern struct dentry_operations sysv_dentry_operations;
 
 
diff --git a/fs/udf/file.c b/fs/udf/file.c
index d81f2db..40d5047d 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -263,6 +263,6 @@ const struct file_operations udf_file_operations = {
 	.sendfile		= generic_file_sendfile,
 };
 
-struct inode_operations udf_file_inode_operations = {
+const struct inode_operations udf_file_inode_operations = {
 	.truncate		= udf_truncate,
 };
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 7316332..fe361cd 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -1308,7 +1308,7 @@ end_rename:
 	return retval;
 }
 
-struct inode_operations udf_dir_inode_operations = {
+const struct inode_operations udf_dir_inode_operations = {
 	.lookup				= udf_lookup,
 	.create				= udf_create,
 	.link				= udf_link,
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 1dbc295..8672b88 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -160,7 +160,7 @@ static void destroy_inodecache(void)
 }
 
 /* Superblock operations */
-static struct super_operations udf_sb_ops = {
+static const struct super_operations udf_sb_ops = {
 	.alloc_inode		= udf_alloc_inode,
 	.destroy_inode		= udf_destroy_inode,
 	.write_inode		= udf_write_inode,
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index 1033b7c..ee1dece 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -42,9 +42,9 @@ struct task_struct;
 struct buffer_head;
 struct super_block;
 
-extern struct inode_operations udf_dir_inode_operations;
+extern const struct inode_operations udf_dir_inode_operations;
 extern const struct file_operations udf_dir_operations;
-extern struct inode_operations udf_file_inode_operations;
+extern const struct inode_operations udf_file_inode_operations;
 extern const struct file_operations udf_file_operations;
 extern const struct address_space_operations udf_aops;
 extern const struct address_space_operations udf_adinicb_aops;
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index 638f4c5..0e97a4f 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -4,6 +4,8 @@
  * Copyright (C) 1998
  * Daniel Pirkl <daniel.pirkl@email.cz>
  * Charles University, Faculty of Mathematics and Physics
+ *
+ * UFS2 write support Evgeniy Dushistov <dushistov@mail.ru>, 2007
  */
 
 #include <linux/fs.h>
@@ -21,38 +23,42 @@
 #include "swab.h"
 #include "util.h"
 
-static unsigned ufs_add_fragments (struct inode *, unsigned, unsigned, unsigned, int *);
-static unsigned ufs_alloc_fragments (struct inode *, unsigned, unsigned, unsigned, int *);
-static unsigned ufs_alloccg_block (struct inode *, struct ufs_cg_private_info *, unsigned, int *);
-static unsigned ufs_bitmap_search (struct super_block *, struct ufs_cg_private_info *, unsigned, unsigned);
+#define INVBLOCK ((u64)-1L)
+
+static u64 ufs_add_fragments(struct inode *, u64, unsigned, unsigned, int *);
+static u64 ufs_alloc_fragments(struct inode *, unsigned, u64, unsigned, int *);
+static u64 ufs_alloccg_block(struct inode *, struct ufs_cg_private_info *, u64, int *);
+static u64 ufs_bitmap_search (struct super_block *, struct ufs_cg_private_info *, u64, unsigned);
 static unsigned char ufs_fragtable_8fpb[], ufs_fragtable_other[];
 static void ufs_clusteracct(struct super_block *, struct ufs_cg_private_info *, unsigned, int);
 
 /*
  * Free 'count' fragments from fragment number 'fragment'
  */
-void ufs_free_fragments(struct inode *inode, unsigned fragment, unsigned count)
+void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
 {
 	struct super_block * sb;
 	struct ufs_sb_private_info * uspi;
 	struct ufs_super_block_first * usb1;
 	struct ufs_cg_private_info * ucpi;
 	struct ufs_cylinder_group * ucg;
-	unsigned cgno, bit, end_bit, bbase, blkmap, i, blkno, cylno;
+	unsigned cgno, bit, end_bit, bbase, blkmap, i;
+	u64 blkno;
 	
 	sb = inode->i_sb;
 	uspi = UFS_SB(sb)->s_uspi;
 	usb1 = ubh_get_usb_first(uspi);
 	
-	UFSD("ENTER, fragment %u, count %u\n", fragment, count);
+	UFSD("ENTER, fragment %llu, count %u\n",
+	     (unsigned long long)fragment, count);
 	
 	if (ufs_fragnum(fragment) + count > uspi->s_fpg)
 		ufs_error (sb, "ufs_free_fragments", "internal error");
 	
 	lock_super(sb);
 	
-	cgno = ufs_dtog(fragment);
-	bit = ufs_dtogd(fragment);
+	cgno = ufs_dtog(uspi, fragment);
+	bit = ufs_dtogd(uspi, fragment);
 	if (cgno >= uspi->s_ncg) {
 		ufs_panic (sb, "ufs_free_fragments", "freeing blocks are outside device");
 		goto failed;
@@ -101,9 +107,13 @@ void ufs_free_fragments(struct inode *inode, unsigned fragment, unsigned count)
 		fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1);
 		uspi->cs_total.cs_nbfree++;
 		fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nbfree, 1);
-		cylno = ufs_cbtocylno (bbase);
-		fs16_add(sb, &ubh_cg_blks(ucpi, cylno, ufs_cbtorpos(bbase)), 1);
-		fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+		if (uspi->fs_magic != UFS2_MAGIC) {
+			unsigned cylno = ufs_cbtocylno (bbase);
+
+			fs16_add(sb, &ubh_cg_blks(ucpi, cylno,
+						  ufs_cbtorpos(bbase)), 1);
+			fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+		}
 	}
 	
 	ubh_mark_buffer_dirty (USPI_UBH(uspi));
@@ -127,24 +137,27 @@ failed:
 /*
  * Free 'count' fragments from fragment number 'fragment' (free whole blocks)
  */
-void ufs_free_blocks(struct inode *inode, unsigned fragment, unsigned count)
+void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count)
 {
 	struct super_block * sb;
 	struct ufs_sb_private_info * uspi;
 	struct ufs_super_block_first * usb1;
 	struct ufs_cg_private_info * ucpi;
 	struct ufs_cylinder_group * ucg;
-	unsigned overflow, cgno, bit, end_bit, blkno, i, cylno;
+	unsigned overflow, cgno, bit, end_bit, i;
+	u64 blkno;
 	
 	sb = inode->i_sb;
 	uspi = UFS_SB(sb)->s_uspi;
 	usb1 = ubh_get_usb_first(uspi);
 
-	UFSD("ENTER, fragment %u, count %u\n", fragment, count);
+	UFSD("ENTER, fragment %llu, count %u\n",
+	     (unsigned long long)fragment, count);
 	
 	if ((fragment & uspi->s_fpbmask) || (count & uspi->s_fpbmask)) {
 		ufs_error (sb, "ufs_free_blocks", "internal error, "
-			"fragment %u, count %u\n", fragment, count);
+			   "fragment %llu, count %u\n",
+			   (unsigned long long)fragment, count);
 		goto failed;
 	}
 
@@ -152,8 +165,8 @@ void ufs_free_blocks(struct inode *inode, unsigned fragment, unsigned count)
 	
 do_more:
 	overflow = 0;
-	cgno = ufs_dtog (fragment);
-	bit = ufs_dtogd (fragment);
+	cgno = ufs_dtog(uspi, fragment);
+	bit = ufs_dtogd(uspi, fragment);
 	if (cgno >= uspi->s_ncg) {
 		ufs_panic (sb, "ufs_free_blocks", "freeing blocks are outside device");
 		goto failed_unlock;
@@ -187,9 +200,14 @@ do_more:
 		fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1);
 		uspi->cs_total.cs_nbfree++;
 		fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nbfree, 1);
-		cylno = ufs_cbtocylno(i);
-		fs16_add(sb, &ubh_cg_blks(ucpi, cylno, ufs_cbtorpos(i)), 1);
-		fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+
+		if (uspi->fs_magic != UFS2_MAGIC) {
+			unsigned cylno = ufs_cbtocylno(i);
+
+			fs16_add(sb, &ubh_cg_blks(ucpi, cylno,
+						  ufs_cbtorpos(i)), 1);
+			fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+		}
 	}
 
 	ubh_mark_buffer_dirty (USPI_UBH(uspi));
@@ -308,15 +326,19 @@ static void ufs_clear_frags(struct inode *inode, sector_t beg, unsigned int n,
 	}
 }
 
-unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
-			   unsigned goal, unsigned count, int * err, struct page *locked_page)
+u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+			   u64 goal, unsigned count, int *err,
+			   struct page *locked_page)
 {
 	struct super_block * sb;
 	struct ufs_sb_private_info * uspi;
 	struct ufs_super_block_first * usb1;
-	unsigned cgno, oldcount, newcount, tmp, request, result;
+	unsigned cgno, oldcount, newcount;
+	u64 tmp, request, result;
 	
-	UFSD("ENTER, ino %lu, fragment %u, goal %u, count %u\n", inode->i_ino, fragment, goal, count);
+	UFSD("ENTER, ino %lu, fragment %llu, goal %llu, count %u\n",
+	     inode->i_ino, (unsigned long long)fragment,
+	     (unsigned long long)goal, count);
 	
 	sb = inode->i_sb;
 	uspi = UFS_SB(sb)->s_uspi;
@@ -324,11 +346,12 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
 	*err = -ENOSPC;
 
 	lock_super (sb);
-	
-	tmp = fs32_to_cpu(sb, *p);
+	tmp = ufs_data_ptr_to_cpu(sb, p);
+
 	if (count + ufs_fragnum(fragment) > uspi->s_fpb) {
-		ufs_warning (sb, "ufs_new_fragments", "internal warning"
-			" fragment %u, count %u", fragment, count);
+		ufs_warning(sb, "ufs_new_fragments", "internal warning"
+			    " fragment %llu, count %u",
+			    (unsigned long long)fragment, count);
 		count = uspi->s_fpb - ufs_fragnum(fragment); 
 	}
 	oldcount = ufs_fragnum (fragment);
@@ -339,10 +362,12 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
 	 */
 	if (oldcount) {
 		if (!tmp) {
-			ufs_error (sb, "ufs_new_fragments", "internal error, "
-				"fragment %u, tmp %u\n", fragment, tmp);
-			unlock_super (sb);
-			return (unsigned)-1;
+			ufs_error(sb, "ufs_new_fragments", "internal error, "
+				  "fragment %llu, tmp %llu\n",
+				  (unsigned long long)fragment,
+				  (unsigned long long)tmp);
+			unlock_super(sb);
+			return INVBLOCK;
 		}
 		if (fragment < UFS_I(inode)->i_lastfrag) {
 			UFSD("EXIT (ALREADY ALLOCATED)\n");
@@ -372,7 +397,7 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
 	if (goal == 0) 
 		cgno = ufs_inotocg (inode->i_ino);
 	else
-		cgno = ufs_dtog (goal);
+		cgno = ufs_dtog(uspi, goal);
 	 
 	/*
 	 * allocate new fragment
@@ -380,14 +405,16 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
 	if (oldcount == 0) {
 		result = ufs_alloc_fragments (inode, cgno, goal, count, err);
 		if (result) {
-			*p = cpu_to_fs32(sb, result);
+			ufs_cpu_to_data_ptr(sb, p, result);
 			*err = 0;
-			UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count);
-			ufs_clear_frags(inode, result + oldcount, newcount - oldcount,
-					locked_page != NULL);
+			UFS_I(inode)->i_lastfrag =
+				max_t(u32, UFS_I(inode)->i_lastfrag,
+				      fragment + count);
+			ufs_clear_frags(inode, result + oldcount,
+					newcount - oldcount, locked_page != NULL);
 		}
 		unlock_super(sb);
-		UFSD("EXIT, result %u\n", result);
+		UFSD("EXIT, result %llu\n", (unsigned long long)result);
 		return result;
 	}
 
@@ -401,7 +428,7 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
 		ufs_clear_frags(inode, result + oldcount, newcount - oldcount,
 				locked_page != NULL);
 		unlock_super(sb);
-		UFSD("EXIT, result %u\n", result);
+		UFSD("EXIT, result %llu\n", (unsigned long long)result);
 		return result;
 	}
 
@@ -433,15 +460,14 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
 				locked_page != NULL);
 		ufs_change_blocknr(inode, fragment - oldcount, oldcount, tmp,
 				   result, locked_page);
-
-		*p = cpu_to_fs32(sb, result);
+		ufs_cpu_to_data_ptr(sb, p, result);
 		*err = 0;
 		UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count);
 		unlock_super(sb);
 		if (newcount < request)
 			ufs_free_fragments (inode, result + newcount, request - newcount);
 		ufs_free_fragments (inode, tmp, oldcount);
-		UFSD("EXIT, result %u\n", result);
+		UFSD("EXIT, result %llu\n", (unsigned long long)result);
 		return result;
 	}
 
@@ -450,9 +476,8 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
 	return 0;
 }		
 
-static unsigned
-ufs_add_fragments (struct inode * inode, unsigned fragment,
-		   unsigned oldcount, unsigned newcount, int * err)
+static u64 ufs_add_fragments(struct inode *inode, u64 fragment,
+			     unsigned oldcount, unsigned newcount, int *err)
 {
 	struct super_block * sb;
 	struct ufs_sb_private_info * uspi;
@@ -461,14 +486,15 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
 	struct ufs_cylinder_group * ucg;
 	unsigned cgno, fragno, fragoff, count, fragsize, i;
 	
-	UFSD("ENTER, fragment %u, oldcount %u, newcount %u\n", fragment, oldcount, newcount);
+	UFSD("ENTER, fragment %llu, oldcount %u, newcount %u\n",
+	     (unsigned long long)fragment, oldcount, newcount);
 	
 	sb = inode->i_sb;
 	uspi = UFS_SB(sb)->s_uspi;
 	usb1 = ubh_get_usb_first (uspi);
 	count = newcount - oldcount;
 	
-	cgno = ufs_dtog(fragment);
+	cgno = ufs_dtog(uspi, fragment);
 	if (fs32_to_cpu(sb, UFS_SB(sb)->fs_cs(cgno).cs_nffree) < count)
 		return 0;
 	if ((ufs_fragnum (fragment) + newcount) > uspi->s_fpb)
@@ -483,7 +509,7 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
 		return 0;
 	}
 
-	fragno = ufs_dtogd (fragment);
+	fragno = ufs_dtogd(uspi, fragment);
 	fragoff = ufs_fragnum (fragno);
 	for (i = oldcount; i < newcount; i++)
 		if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i))
@@ -521,7 +547,7 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
 	}
 	sb->s_dirt = 1;
 
-	UFSD("EXIT, fragment %u\n", fragment);
+	UFSD("EXIT, fragment %llu\n", (unsigned long long)fragment);
 	
 	return fragment;
 }
@@ -534,17 +560,19 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
 		if (fs32_to_cpu(sb, ucg->cg_frsum[k])) \
 			goto cg_found; 
 
-static unsigned ufs_alloc_fragments (struct inode * inode, unsigned cgno,
-	unsigned goal, unsigned count, int * err)
+static u64 ufs_alloc_fragments(struct inode *inode, unsigned cgno,
+			       u64 goal, unsigned count, int *err)
 {
 	struct super_block * sb;
 	struct ufs_sb_private_info * uspi;
 	struct ufs_super_block_first * usb1;
 	struct ufs_cg_private_info * ucpi;
 	struct ufs_cylinder_group * ucg;
-	unsigned oldcg, i, j, k, result, allocsize;
+	unsigned oldcg, i, j, k, allocsize;
+	u64 result;
 	
-	UFSD("ENTER, ino %lu, cgno %u, goal %u, count %u\n", inode->i_ino, cgno, goal, count);
+	UFSD("ENTER, ino %lu, cgno %u, goal %llu, count %u\n",
+	     inode->i_ino, cgno, (unsigned long long)goal, count);
 
 	sb = inode->i_sb;
 	uspi = UFS_SB(sb)->s_uspi;
@@ -593,7 +621,7 @@ cg_found:
 
 	if (count == uspi->s_fpb) {
 		result = ufs_alloccg_block (inode, ucpi, goal, err);
-		if (result == (unsigned)-1)
+		if (result == INVBLOCK)
 			return 0;
 		goto succed;
 	}
@@ -604,9 +632,9 @@ cg_found:
 	
 	if (allocsize == uspi->s_fpb) {
 		result = ufs_alloccg_block (inode, ucpi, goal, err);
-		if (result == (unsigned)-1)
+		if (result == INVBLOCK)
 			return 0;
-		goal = ufs_dtogd (result);
+		goal = ufs_dtogd(uspi, result);
 		for (i = count; i < uspi->s_fpb; i++)
 			ubh_setbit (UCPI_UBH(ucpi), ucpi->c_freeoff, goal + i);
 		i = uspi->s_fpb - count;
@@ -620,7 +648,7 @@ cg_found:
 	}
 
 	result = ufs_bitmap_search (sb, ucpi, goal, allocsize);
-	if (result == (unsigned)-1)
+	if (result == INVBLOCK)
 		return 0;
 	if(DQUOT_ALLOC_BLOCK(inode, count)) {
 		*err = -EDQUOT;
@@ -647,20 +675,21 @@ succed:
 	sb->s_dirt = 1;
 
 	result += cgno * uspi->s_fpg;
-	UFSD("EXIT3, result %u\n", result);
+	UFSD("EXIT3, result %llu\n", (unsigned long long)result);
 	return result;
 }
 
-static unsigned ufs_alloccg_block (struct inode * inode,
-	struct ufs_cg_private_info * ucpi, unsigned goal, int * err)
+static u64 ufs_alloccg_block(struct inode *inode,
+			     struct ufs_cg_private_info *ucpi,
+			     u64 goal, int *err)
 {
 	struct super_block * sb;
 	struct ufs_sb_private_info * uspi;
 	struct ufs_super_block_first * usb1;
 	struct ufs_cylinder_group * ucg;
-	unsigned result, cylno, blkno;
+	u64 result, blkno;
 
-	UFSD("ENTER, goal %u\n", goal);
+	UFSD("ENTER, goal %llu\n", (unsigned long long)goal);
 
 	sb = inode->i_sb;
 	uspi = UFS_SB(sb)->s_uspi;
@@ -672,7 +701,7 @@ static unsigned ufs_alloccg_block (struct inode * inode,
 		goto norot;
 	}
 	goal = ufs_blknum (goal);
-	goal = ufs_dtogd (goal);
+	goal = ufs_dtogd(uspi, goal);
 	
 	/*
 	 * If the requested block is available, use it.
@@ -684,8 +713,8 @@ static unsigned ufs_alloccg_block (struct inode * inode,
 	
 norot:	
 	result = ufs_bitmap_search (sb, ucpi, goal, uspi->s_fpb);
-	if (result == (unsigned)-1)
-		return (unsigned)-1;
+	if (result == INVBLOCK)
+		return INVBLOCK;
 	ucpi->c_rotor = result;
 gotit:
 	blkno = ufs_fragstoblks(result);
@@ -694,17 +723,22 @@ gotit:
 		ufs_clusteracct (sb, ucpi, blkno, -1);
 	if(DQUOT_ALLOC_BLOCK(inode, uspi->s_fpb)) {
 		*err = -EDQUOT;
-		return (unsigned)-1;
+		return INVBLOCK;
 	}
 
 	fs32_sub(sb, &ucg->cg_cs.cs_nbfree, 1);
 	uspi->cs_total.cs_nbfree--;
 	fs32_sub(sb, &UFS_SB(sb)->fs_cs(ucpi->c_cgx).cs_nbfree, 1);
-	cylno = ufs_cbtocylno(result);
-	fs16_sub(sb, &ubh_cg_blks(ucpi, cylno, ufs_cbtorpos(result)), 1);
-	fs32_sub(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+
+	if (uspi->fs_magic != UFS2_MAGIC) {
+		unsigned cylno = ufs_cbtocylno((unsigned)result);
+
+		fs16_sub(sb, &ubh_cg_blks(ucpi, cylno,
+					  ufs_cbtorpos((unsigned)result)), 1);
+		fs32_sub(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+	}
 	
-	UFSD("EXIT, result %u\n", result);
+	UFSD("EXIT, result %llu\n", (unsigned long long)result);
 
 	return result;
 }
@@ -744,9 +778,9 @@ static unsigned ubh_scanc(struct ufs_sb_private_info *uspi,
  * @goal: near which block we want find new one
  * @count: specified size
  */
-static unsigned ufs_bitmap_search(struct super_block *sb,
-				  struct ufs_cg_private_info *ucpi,
-				  unsigned goal, unsigned count)
+static u64 ufs_bitmap_search(struct super_block *sb,
+			     struct ufs_cg_private_info *ucpi,
+			     u64 goal, unsigned count)
 {
 	/*
 	 * Bit patterns for identifying fragments in the block map
@@ -761,16 +795,18 @@ static unsigned ufs_bitmap_search(struct super_block *sb,
 	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
 	struct ufs_super_block_first *usb1;
 	struct ufs_cylinder_group *ucg;
-	unsigned start, length, loc, result;
+	unsigned start, length, loc;
 	unsigned pos, want, blockmap, mask, end;
+	u64 result;
 
-	UFSD("ENTER, cg %u, goal %u, count %u\n", ucpi->c_cgx, goal, count);
+	UFSD("ENTER, cg %u, goal %llu, count %u\n", ucpi->c_cgx,
+	     (unsigned long long)goal, count);
 
 	usb1 = ubh_get_usb_first (uspi);
 	ucg = ubh_get_ucg(UCPI_UBH(ucpi));
 
 	if (goal)
-		start = ufs_dtogd(goal) >> 3;
+		start = ufs_dtogd(uspi, goal) >> 3;
 	else
 		start = ucpi->c_frotor >> 3;
 		
@@ -790,7 +826,7 @@ static unsigned ufs_bitmap_search(struct super_block *sb,
 				  " length %u, count %u, freeoff %u\n",
 				  ucpi->c_cgx, start, length, count,
 				  ucpi->c_freeoff);
-			return (unsigned)-1;
+			return INVBLOCK;
 		}
 		start = 0;
 	}
@@ -808,7 +844,8 @@ static unsigned ufs_bitmap_search(struct super_block *sb,
 		want = want_arr[count];
 		for (pos = 0; pos <= uspi->s_fpb - count; pos++) {
 			if ((blockmap & mask) == want) {
-				UFSD("EXIT, result %u\n", result);
+				UFSD("EXIT, result %llu\n",
+				     (unsigned long long)result);
 				return result + pos;
  			}
 			mask <<= 1;
@@ -819,7 +856,7 @@ static unsigned ufs_bitmap_search(struct super_block *sb,
 	ufs_error(sb, "ufs_bitmap_search", "block not in map on cg %u\n",
 		  ucpi->c_cgx);
 	UFSD("EXIT (FAILED)\n");
-	return (unsigned)-1;
+	return INVBLOCK;
 }
 
 static void ufs_clusteracct(struct super_block * sb,
diff --git a/fs/ufs/dir.c b/fs/ufs/dir.c
index 433b6f6..a6c0ca9 100644
--- a/fs/ufs/dir.c
+++ b/fs/ufs/dir.c
@@ -106,12 +106,13 @@ static void ufs_check_page(struct page *page)
 	char *kaddr = page_address(page);
 	unsigned offs, rec_len;
 	unsigned limit = PAGE_CACHE_SIZE;
+	const unsigned chunk_mask = UFS_SB(sb)->s_uspi->s_dirblksize - 1;
 	struct ufs_dir_entry *p;
 	char *error;
 
 	if ((dir->i_size >> PAGE_CACHE_SHIFT) == page->index) {
 		limit = dir->i_size & ~PAGE_CACHE_MASK;
-		if (limit & (UFS_SECTOR_SIZE - 1))
+		if (limit & chunk_mask)
 			goto Ebadsize;
 		if (!limit)
 			goto out;
@@ -126,7 +127,7 @@ static void ufs_check_page(struct page *page)
 			goto Ealign;
 		if (rec_len < UFS_DIR_REC_LEN(ufs_get_de_namlen(sb, p)))
 			goto Enamelen;
-		if (((offs + rec_len - 1) ^ offs) & ~(UFS_SECTOR_SIZE-1))
+		if (((offs + rec_len - 1) ^ offs) & ~chunk_mask)
 			goto Espan;
 		if (fs32_to_cpu(sb, p->d_ino) > (UFS_SB(sb)->s_uspi->s_ipg *
 						  UFS_SB(sb)->s_uspi->s_ncg))
@@ -310,6 +311,7 @@ int ufs_add_link(struct dentry *dentry, struct inode *inode)
 	int namelen = dentry->d_name.len;
 	struct super_block *sb = dir->i_sb;
 	unsigned reclen = UFS_DIR_REC_LEN(namelen);
+	const unsigned int chunk_size = UFS_SB(sb)->s_uspi->s_dirblksize;
 	unsigned short rec_len, name_len;
 	struct page *page = NULL;
 	struct ufs_dir_entry *de;
@@ -342,8 +344,8 @@ int ufs_add_link(struct dentry *dentry, struct inode *inode)
 			if ((char *)de == dir_end) {
 				/* We hit i_size */
 				name_len = 0;
-				rec_len = UFS_SECTOR_SIZE;
-				de->d_reclen = cpu_to_fs16(sb, UFS_SECTOR_SIZE);
+				rec_len = chunk_size;
+				de->d_reclen = cpu_to_fs16(sb, chunk_size);
 				de->d_ino = 0;
 				goto got_it;
 			}
@@ -431,7 +433,7 @@ ufs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 	unsigned int offset = pos & ~PAGE_CACHE_MASK;
 	unsigned long n = pos >> PAGE_CACHE_SHIFT;
 	unsigned long npages = ufs_dir_pages(inode);
-	unsigned chunk_mask = ~(UFS_SECTOR_SIZE - 1);
+	unsigned chunk_mask = ~(UFS_SB(sb)->s_uspi->s_dirblksize - 1);
 	int need_revalidate = filp->f_version != inode->i_version;
 	unsigned flags = UFS_SB(sb)->s_flags;
 
@@ -511,7 +513,7 @@ int ufs_delete_entry(struct inode *inode, struct ufs_dir_entry *dir,
 	struct super_block *sb = inode->i_sb;
 	struct address_space *mapping = page->mapping;
 	char *kaddr = page_address(page);
-	unsigned from = ((char*)dir - kaddr) & ~(UFS_SECTOR_SIZE - 1);
+	unsigned from = ((char*)dir - kaddr) & ~(UFS_SB(sb)->s_uspi->s_dirblksize - 1);
 	unsigned to = ((char*)dir - kaddr) + fs16_to_cpu(sb, dir->d_reclen);
 	struct ufs_dir_entry *pde = NULL;
 	struct ufs_dir_entry *de = (struct ufs_dir_entry *) (kaddr + from);
@@ -556,6 +558,7 @@ int ufs_make_empty(struct inode * inode, struct inode *dir)
 	struct super_block * sb = dir->i_sb;
 	struct address_space *mapping = inode->i_mapping;
 	struct page *page = grab_cache_page(mapping, 0);
+	const unsigned int chunk_size = UFS_SB(sb)->s_uspi->s_dirblksize;
 	struct ufs_dir_entry * de;
 	char *base;
 	int err;
@@ -563,7 +566,7 @@ int ufs_make_empty(struct inode * inode, struct inode *dir)
 	if (!page)
 		return -ENOMEM;
 	kmap(page);
-	err = mapping->a_ops->prepare_write(NULL, page, 0, UFS_SECTOR_SIZE);
+	err = mapping->a_ops->prepare_write(NULL, page, 0, chunk_size);
 	if (err) {
 		unlock_page(page);
 		goto fail;
@@ -584,11 +587,11 @@ int ufs_make_empty(struct inode * inode, struct inode *dir)
 		((char *)de + fs16_to_cpu(sb, de->d_reclen));
 	de->d_ino = cpu_to_fs32(sb, dir->i_ino);
 	ufs_set_de_type(sb, de, dir->i_mode);
-	de->d_reclen = cpu_to_fs16(sb, UFS_SECTOR_SIZE - UFS_DIR_REC_LEN(1));
+	de->d_reclen = cpu_to_fs16(sb, chunk_size - UFS_DIR_REC_LEN(1));
 	ufs_set_de_namlen(sb, de, 2);
 	strcpy (de->d_name, "..");
 
-	err = ufs_commit_chunk(page, 0, UFS_SECTOR_SIZE);
+	err = ufs_commit_chunk(page, 0, chunk_size);
 fail:
 	kunmap(page);
 	page_cache_release(page);
diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c
index 2ad1259..b868878 100644
--- a/fs/ufs/ialloc.c
+++ b/fs/ufs/ialloc.c
@@ -18,6 +18,9 @@
  *  Stephen Tweedie (sct@dcs.ed.ac.uk), 1993
  *  Big-endian to little-endian byte-swapping/bitmaps by
  *        David S. Miller (davem@caip.rutgers.edu), 1995
+ *
+ * UFS2 write support added by
+ * Evgeniy Dushistov <dushistov@mail.ru>, 2007
  */
 
 #include <linux/fs.h>
@@ -126,6 +129,47 @@ void ufs_free_inode (struct inode * inode)
 }
 
 /*
+ * Nullify new chunk of inodes,
+ * BSD people also set ui_gen field of inode
+ * during nullification, but we not care about
+ * that because of linux ufs do not support NFS
+ */
+static void ufs2_init_inodes_chunk(struct super_block *sb,
+				   struct ufs_cg_private_info *ucpi,
+				   struct ufs_cylinder_group *ucg)
+{
+	struct buffer_head *bh;
+	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+	sector_t beg = uspi->s_sbbase +
+		ufs_inotofsba(ucpi->c_cgx * uspi->s_ipg +
+			      fs32_to_cpu(sb, ucg->cg_u.cg_u2.cg_initediblk));
+	sector_t end = beg + uspi->s_fpb;
+
+	UFSD("ENTER cgno %d\n", ucpi->c_cgx);
+
+	for (; beg < end; ++beg) {
+		bh = sb_getblk(sb, beg);
+		lock_buffer(bh);
+		memset(bh->b_data, 0, sb->s_blocksize);
+		set_buffer_uptodate(bh);
+		mark_buffer_dirty(bh);
+		unlock_buffer(bh);
+		if (sb->s_flags & MS_SYNCHRONOUS)
+			sync_dirty_buffer(bh);
+		brelse(bh);
+	}
+
+	fs32_add(sb, &ucg->cg_u.cg_u2.cg_initediblk, uspi->s_inopb);
+	ubh_mark_buffer_dirty(UCPI_UBH(ucpi));
+	if (sb->s_flags & MS_SYNCHRONOUS) {
+		ubh_ll_rw_block(SWRITE, UCPI_UBH(ucpi));
+		ubh_wait_on_buffer(UCPI_UBH(ucpi));
+	}
+
+	UFSD("EXIT\n");
+}
+
+/*
  * There are two policies for allocating an inode.  If the new inode is
  * a directory, then a forward search is made for a block group with both
  * free space and a low directory-to-inode ratio; if that fails, then of
@@ -146,6 +190,7 @@ struct inode * ufs_new_inode(struct inode * dir, int mode)
 	struct inode * inode;
 	unsigned cg, bit, i, j, start;
 	struct ufs_inode_info *ufsi;
+	int err = -ENOSPC;
 
 	UFSD("ENTER\n");
 	
@@ -198,13 +243,15 @@ struct inode * ufs_new_inode(struct inode * dir, int mode)
 			goto cg_found;
 		}
 	}
-	
+
 	goto failed;
 
 cg_found:
 	ucpi = ufs_load_cylinder (sb, cg);
-	if (!ucpi)
+	if (!ucpi) {
+		err = -EIO;
 		goto failed;
+	}
 	ucg = ubh_get_ucg(UCPI_UBH(ucpi));
 	if (!ufs_cg_chkmagic(sb, ucg)) 
 		ufs_panic (sb, "ufs_new_inode", "internal error, bad cg magic number");
@@ -216,6 +263,7 @@ cg_found:
 		if (!(bit < start)) {
 			ufs_error (sb, "ufs_new_inode",
 			    "cylinder group %u corrupted - error in inode bitmap\n", cg);
+			err = -EIO;
 			goto failed;
 		}
 	}
@@ -224,9 +272,18 @@ cg_found:
 		ubh_setbit (UCPI_UBH(ucpi), ucpi->c_iusedoff, bit);
 	else {
 		ufs_panic (sb, "ufs_new_inode", "internal error");
+		err = -EIO;
 		goto failed;
 	}
-	
+
+	if (uspi->fs_magic == UFS2_MAGIC) {
+		u32 initediblk = fs32_to_cpu(sb, ucg->cg_u.cg_u2.cg_initediblk);
+
+		if (bit + uspi->s_inopb > initediblk &&
+		    initediblk < fs32_to_cpu(sb, ucg->cg_u.cg_u2.cg_niblk))
+			ufs2_init_inodes_chunk(sb, ucpi, ucg);
+	}
+
 	fs32_sub(sb, &ucg->cg_cs.cs_nifree, 1);
 	uspi->cs_total.cs_nifree--;
 	fs32_sub(sb, &sbi->fs_cs(cg).cs_nifree, 1);
@@ -236,7 +293,6 @@ cg_found:
 		uspi->cs_total.cs_ndir++;
 		fs32_add(sb, &sbi->fs_cs(cg).cs_ndir, 1);
 	}
-
 	ubh_mark_buffer_dirty (USPI_UBH(uspi));
 	ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
 	if (sb->s_flags & MS_SYNCHRONOUS) {
@@ -245,6 +301,7 @@ cg_found:
 	}
 	sb->s_dirt = 1;
 
+	inode->i_ino = cg * uspi->s_ipg + bit;
 	inode->i_mode = mode;
 	inode->i_uid = current->fsuid;
 	if (dir->i_mode & S_ISGID) {
@@ -254,39 +311,72 @@ cg_found:
 	} else
 		inode->i_gid = current->fsgid;
 
-	inode->i_ino = cg * uspi->s_ipg + bit;
 	inode->i_blocks = 0;
+	inode->i_generation = 0;
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
 	ufsi->i_flags = UFS_I(dir)->i_flags;
 	ufsi->i_lastfrag = 0;
-	ufsi->i_gen = 0;
 	ufsi->i_shadow = 0;
 	ufsi->i_osync = 0;
 	ufsi->i_oeftflag = 0;
 	ufsi->i_dir_start_lookup = 0;
 	memset(&ufsi->i_u1, 0, sizeof(ufsi->i_u1));
-
 	insert_inode_hash(inode);
 	mark_inode_dirty(inode);
 
+	if (uspi->fs_magic == UFS2_MAGIC) {
+		struct buffer_head *bh;
+		struct ufs2_inode *ufs2_inode;
+
+		/*
+		 * setup birth date, we do it here because of there is no sense
+		 * to hold it in struct ufs_inode_info, and lose 64 bit
+		 */
+		bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino));
+		if (!bh) {
+			ufs_warning(sb, "ufs_read_inode",
+				    "unable to read inode %lu\n",
+				    inode->i_ino);
+			err = -EIO;
+			goto fail_remove_inode;
+		}
+		lock_buffer(bh);
+		ufs2_inode = (struct ufs2_inode *)bh->b_data;
+		ufs2_inode += ufs_inotofsbo(inode->i_ino);
+		ufs2_inode->ui_birthtime.tv_sec =
+			cpu_to_fs32(sb, CURRENT_TIME_SEC.tv_sec);
+		ufs2_inode->ui_birthtime.tv_usec = 0;
+		mark_buffer_dirty(bh);
+		unlock_buffer(bh);
+		if (sb->s_flags & MS_SYNCHRONOUS)
+			sync_dirty_buffer(bh);
+		brelse(bh);
+	}
+
 	unlock_super (sb);
 
 	if (DQUOT_ALLOC_INODE(inode)) {
 		DQUOT_DROP(inode);
-		inode->i_flags |= S_NOQUOTA;
-		inode->i_nlink = 0;
-		iput(inode);
-		return ERR_PTR(-EDQUOT);
+		err = -EDQUOT;
+		goto fail_without_unlock;
 	}
 
 	UFSD("allocating inode %lu\n", inode->i_ino);
 	UFSD("EXIT\n");
 	return inode;
 
+fail_remove_inode:
+	unlock_super(sb);
+fail_without_unlock:
+	inode->i_flags |= S_NOQUOTA;
+	inode->i_nlink = 0;
+	iput(inode);
+	UFSD("EXIT (FAILED): err %d\n", err);
+	return ERR_PTR(err);
 failed:
 	unlock_super (sb);
 	make_bad_inode(inode);
 	iput (inode);
-	UFSD("EXIT (FAILED)\n");
-	return ERR_PTR(-ENOSPC);
+	UFSD("EXIT (FAILED): err %d\n", err);
+	return ERR_PTR(err);
 }
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index 4295ca9..fb34ad0 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -170,7 +170,7 @@ out:
  * @locked_page - for ufs_new_fragments()
  */
 static struct buffer_head *
-ufs_inode_getfrag(struct inode *inode, unsigned int fragment,
+ufs_inode_getfrag(struct inode *inode, u64 fragment,
 		  sector_t new_fragment, unsigned int required, int *err,
 		  long *phys, int *new, struct page *locked_page)
 {
@@ -178,12 +178,12 @@ ufs_inode_getfrag(struct inode *inode, unsigned int fragment,
 	struct super_block *sb = inode->i_sb;
 	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
 	struct buffer_head * result;
-	unsigned block, blockoff, lastfrag, lastblock, lastblockoff;
-	unsigned tmp, goal;
-	__fs32 * p, * p2;
+	unsigned blockoff, lastblockoff;
+	u64 tmp, goal, lastfrag, block, lastblock;
+	void *p, *p2;
 
-	UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, required %u, "
-	     "metadata %d\n", inode->i_ino, fragment,
+	UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, "
+	     "metadata %d\n", inode->i_ino, (unsigned long long)fragment,
 	     (unsigned long long)new_fragment, required, !phys);
 
         /* TODO : to be done for write support
@@ -193,17 +193,20 @@ ufs_inode_getfrag(struct inode *inode, unsigned int fragment,
 
 	block = ufs_fragstoblks (fragment);
 	blockoff = ufs_fragnum (fragment);
-	p = ufsi->i_u1.i_data + block;
+	p = ufs_get_direct_data_ptr(uspi, ufsi, block);
+
 	goal = 0;
 
 repeat:
-	tmp = fs32_to_cpu(sb, *p);
+	tmp = ufs_data_ptr_to_cpu(sb, p);
+
 	lastfrag = ufsi->i_lastfrag;
 	if (tmp && fragment < lastfrag) {
 		if (!phys) {
 			result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
-			if (tmp == fs32_to_cpu(sb, *p)) {
-				UFSD("EXIT, result %u\n", tmp + blockoff);
+			if (tmp == ufs_data_ptr_to_cpu(sb, p)) {
+				UFSD("EXIT, result %llu\n",
+				     (unsigned long long)tmp + blockoff);
 				return result;
 			}
 			brelse (result);
@@ -224,10 +227,11 @@ repeat:
 		 * We must reallocate last allocated block
 		 */
 		if (lastblockoff) {
-			p2 = ufsi->i_u1.i_data + lastblock;
-			tmp = ufs_new_fragments (inode, p2, lastfrag, 
-						 fs32_to_cpu(sb, *p2), uspi->s_fpb - lastblockoff,
-						 err, locked_page);
+			p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock);
+			tmp = ufs_new_fragments(inode, p2, lastfrag,
+						ufs_data_ptr_to_cpu(sb, p2),
+						uspi->s_fpb - lastblockoff,
+						err, locked_page);
 			if (!tmp) {
 				if (lastfrag != ufsi->i_lastfrag)
 					goto repeat;
@@ -237,27 +241,31 @@ repeat:
 			lastfrag = ufsi->i_lastfrag;
 			
 		}
-		tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]);
+		tmp = ufs_data_ptr_to_cpu(sb,
+					 ufs_get_direct_data_ptr(uspi, ufsi,
+								 lastblock));
 		if (tmp)
 			goal = tmp + uspi->s_fpb;
 		tmp = ufs_new_fragments (inode, p, fragment - blockoff, 
 					 goal, required + blockoff,
 					 err,
 					 phys != NULL ? locked_page : NULL);
-	}
+	} else if (lastblock == block) {
 	/*
 	 * We will extend last allocated block
 	 */
-	else if (lastblock == block) {
-		tmp = ufs_new_fragments(inode, p, fragment - (blockoff - lastblockoff),
-					fs32_to_cpu(sb, *p), required +  (blockoff - lastblockoff),
+		tmp = ufs_new_fragments(inode, p, fragment -
+					(blockoff - lastblockoff),
+					ufs_data_ptr_to_cpu(sb, p),
+					required +  (blockoff - lastblockoff),
 					err, phys != NULL ? locked_page : NULL);
 	} else /* (lastblock > block) */ {
 	/*
 	 * We will allocate new block before last allocated block
 	 */
 		if (block) {
-			tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[block-1]);
+			tmp = ufs_data_ptr_to_cpu(sb,
+						 ufs_get_direct_data_ptr(uspi, ufsi, block - 1));
 			if (tmp)
 				goal = tmp + uspi->s_fpb;
 		}
@@ -266,7 +274,7 @@ repeat:
 					phys != NULL ? locked_page : NULL);
 	}
 	if (!tmp) {
-		if ((!blockoff && *p) || 
+		if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) ||
 		    (blockoff && lastfrag != ufsi->i_lastfrag))
 			goto repeat;
 		*err = -ENOSPC;
@@ -286,7 +294,7 @@ repeat:
 	if (IS_SYNC(inode))
 		ufs_sync_inode (inode);
 	mark_inode_dirty(inode);
-	UFSD("EXIT, result %u\n", tmp + blockoff);
+	UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff);
 	return result;
 
      /* This part : To be implemented ....
@@ -320,20 +328,22 @@ repeat2:
  */
 static struct buffer_head *
 ufs_inode_getblock(struct inode *inode, struct buffer_head *bh,
-		  unsigned int fragment, sector_t new_fragment, int *err,
+		  u64 fragment, sector_t new_fragment, int *err,
 		  long *phys, int *new, struct page *locked_page)
 {
 	struct super_block *sb = inode->i_sb;
 	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
 	struct buffer_head * result;
-	unsigned tmp, goal, block, blockoff;
-	__fs32 * p;
+	unsigned blockoff;
+	u64 tmp, goal, block;
+	void *p;
 
 	block = ufs_fragstoblks (fragment);
 	blockoff = ufs_fragnum (fragment);
 
-	UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, metadata %d\n",
-	     inode->i_ino, fragment, (unsigned long long)new_fragment, !phys);
+	UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n",
+	     inode->i_ino, (unsigned long long)fragment,
+	     (unsigned long long)new_fragment, !phys);
 
 	result = NULL;
 	if (!bh)
@@ -344,14 +354,16 @@ ufs_inode_getblock(struct inode *inode, struct buffer_head *bh,
 		if (!buffer_uptodate(bh))
 			goto out;
 	}
-
-	p = (__fs32 *) bh->b_data + block;
+	if (uspi->fs_magic == UFS2_MAGIC)
+		p = (__fs64 *)bh->b_data + block;
+	else
+		p = (__fs32 *)bh->b_data + block;
 repeat:
-	tmp = fs32_to_cpu(sb, *p);
+	tmp = ufs_data_ptr_to_cpu(sb, p);
 	if (tmp) {
 		if (!phys) {
 			result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
-			if (tmp == fs32_to_cpu(sb, *p))
+			if (tmp == ufs_data_ptr_to_cpu(sb, p))
 				goto out;
 			brelse (result);
 			goto repeat;
@@ -361,14 +373,16 @@ repeat:
 		}
 	}
 
-	if (block && (tmp = fs32_to_cpu(sb, ((__fs32*)bh->b_data)[block-1])))
+	if (block && (uspi->fs_magic == UFS2_MAGIC ?
+		      (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) :
+		      (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1]))))
 		goal = tmp + uspi->s_fpb;
 	else
 		goal = bh->b_blocknr + uspi->s_fpb;
 	tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal,
 				uspi->s_fpb, err, locked_page);
 	if (!tmp) {
-		if (fs32_to_cpu(sb, *p))
+		if (ufs_data_ptr_to_cpu(sb, p))
 			goto repeat;
 		goto out;
 	}		
@@ -386,7 +400,7 @@ repeat:
 		sync_dirty_buffer(bh);
 	inode->i_ctime = CURRENT_TIME_SEC;
 	mark_inode_dirty(inode);
-	UFSD("result %u\n", tmp + blockoff);
+	UFSD("result %llu\n", (unsigned long long)tmp + blockoff);
 out:
 	brelse (bh);
 	UFSD("EXIT\n");
@@ -616,8 +630,8 @@ static void ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
 	inode->i_atime.tv_nsec = 0;
 	inode->i_ctime.tv_nsec = 0;
 	inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks);
+	inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen);
 	ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags);
-	ufsi->i_gen = fs32_to_cpu(sb, ufs_inode->ui_gen);
 	ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
 	ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
 
@@ -661,8 +675,8 @@ static void ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
 	inode->i_atime.tv_nsec = 0;
 	inode->i_ctime.tv_nsec = 0;
 	inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks);
+	inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen);
 	ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags);
-	ufsi->i_gen = fs32_to_cpu(sb, ufs2_inode->ui_gen);
 	/*
 	ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
 	ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
@@ -731,34 +745,11 @@ bad_inode:
 	make_bad_inode(inode);
 }
 
-static int ufs_update_inode(struct inode * inode, int do_sync)
+static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode)
 {
-	struct ufs_inode_info *ufsi = UFS_I(inode);
-	struct super_block * sb;
-	struct ufs_sb_private_info * uspi;
-	struct buffer_head * bh;
-	struct ufs_inode * ufs_inode;
-	unsigned i;
-	unsigned flags;
-
-	UFSD("ENTER, ino %lu\n", inode->i_ino);
-
-	sb = inode->i_sb;
-	uspi = UFS_SB(sb)->s_uspi;
-	flags = UFS_SB(sb)->s_flags;
-
-	if (inode->i_ino < UFS_ROOTINO || 
-	    inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) {
-		ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino);
-		return -1;
-	}
-
-	bh = sb_bread(sb, ufs_inotofsba(inode->i_ino));
-	if (!bh) {
-		ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino);
-		return -1;
-	}
-	ufs_inode = (struct ufs_inode *) (bh->b_data + ufs_inotofsbo(inode->i_ino) * sizeof(struct ufs_inode));
+	struct super_block *sb = inode->i_sb;
+ 	struct ufs_inode_info *ufsi = UFS_I(inode);
+ 	unsigned i;
 
 	ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
 	ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
@@ -775,9 +766,9 @@ static int ufs_update_inode(struct inode * inode, int do_sync)
 	ufs_inode->ui_mtime.tv_usec = 0;
 	ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks);
 	ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
-	ufs_inode->ui_gen = cpu_to_fs32(sb, ufsi->i_gen);
+	ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
 
-	if ((flags & UFS_UID_MASK) == UFS_UID_EFT) {
+	if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) {
 		ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow);
 		ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag);
 	}
@@ -796,6 +787,78 @@ static int ufs_update_inode(struct inode * inode, int do_sync)
 
 	if (!inode->i_nlink)
 		memset (ufs_inode, 0, sizeof(struct ufs_inode));
+}
+
+static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode)
+{
+	struct super_block *sb = inode->i_sb;
+ 	struct ufs_inode_info *ufsi = UFS_I(inode);
+ 	unsigned i;
+
+	UFSD("ENTER\n");
+	ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
+	ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
+
+	ufs_inode->ui_uid = cpu_to_fs32(sb, inode->i_uid);
+	ufs_inode->ui_gid = cpu_to_fs32(sb, inode->i_gid);
+
+	ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
+	ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec);
+	ufs_inode->ui_atime.tv_usec = 0;
+	ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec);
+	ufs_inode->ui_ctime.tv_usec = 0;
+	ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec);
+	ufs_inode->ui_mtime.tv_usec = 0;
+
+	ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks);
+	ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
+	ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
+
+	if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
+		/* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */
+		ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0];
+	} else if (inode->i_blocks) {
+		for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++)
+			ufs_inode->ui_u2.ui_addr.ui_db[i] = ufsi->i_u1.u2_i_data[i];
+	} else {
+		for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++)
+			ufs_inode->ui_u2.ui_symlink[i] = ufsi->i_u1.i_symlink[i];
+ 	}
+
+	if (!inode->i_nlink)
+		memset (ufs_inode, 0, sizeof(struct ufs2_inode));
+	UFSD("EXIT\n");
+}
+
+static int ufs_update_inode(struct inode * inode, int do_sync)
+{
+	struct super_block *sb = inode->i_sb;
+	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+	struct buffer_head * bh;
+
+	UFSD("ENTER, ino %lu\n", inode->i_ino);
+
+	if (inode->i_ino < UFS_ROOTINO ||
+	    inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) {
+		ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino);
+		return -1;
+	}
+
+	bh = sb_bread(sb, ufs_inotofsba(inode->i_ino));
+	if (!bh) {
+		ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino);
+		return -1;
+	}
+	if (uspi->fs_magic == UFS2_MAGIC) {
+		struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
+
+		ufs2_update_inode(inode,
+				  ufs2_inode + ufs_inotofsbo(inode->i_ino));
+	} else {
+		struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data;
+
+		ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino));
+	}
 		
 	mark_buffer_dirty(bh);
 	if (do_sync)
diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
index e84c0ec..a059ccd 100644
--- a/fs/ufs/namei.c
+++ b/fs/ufs/namei.c
@@ -355,7 +355,7 @@ out:
 	return err;
 }
 
-struct inode_operations ufs_dir_inode_operations = {
+const struct inode_operations ufs_dir_inode_operations = {
 	.create		= ufs_create,
 	.lookup		= ufs_lookup,
 	.link		= ufs_link,
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 8a8e938..b5a6461 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -61,6 +61,8 @@
  * UFS2 (of FreeBSD 5.x) support added by
  * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004
  *
+ * UFS2 write support added by
+ * Evgeniy Dushistov <dushistov@mail.ru>, 2007
  */
 
 
@@ -93,14 +95,16 @@
 /*
  * Print contents of ufs_super_block, useful for debugging
  */
-static void ufs_print_super_stuff(struct super_block *sb, unsigned flags,
+static void ufs_print_super_stuff(struct super_block *sb,
 				  struct ufs_super_block_first *usb1,
 				  struct ufs_super_block_second *usb2,
 				  struct ufs_super_block_third *usb3)
 {
+	u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
+
 	printk("ufs_print_super_stuff\n");
-	printk("  magic:     0x%x\n", fs32_to_cpu(sb, usb3->fs_magic));
-	if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
+	printk("  magic:     0x%x\n", magic);
+	if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
 		printk("  fs_size:   %llu\n", (unsigned long long)
 		       fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
 		printk("  fs_dsize:  %llu\n", (unsigned long long)
@@ -117,6 +121,12 @@ static void ufs_print_super_stuff(struct super_block *sb, unsigned flags,
 		printk("  cs_nbfree(No of free blocks):  %llu\n",
 		       (unsigned long long)
 		       fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
+		printk(KERN_INFO"  cs_nifree(Num of free inodes): %llu\n",
+		       (unsigned long long)
+		       fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
+		printk(KERN_INFO"  cs_nffree(Num of free frags): %llu\n",
+		       (unsigned long long)
+		       fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
 	} else {
 		printk(" sblkno:      %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
 		printk(" cblkno:      %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
@@ -199,11 +209,11 @@ static void ufs_print_cylinder_stuff(struct super_block *sb,
 	printk("\n");
 }
 #else
-#  define ufs_print_super_stuff(sb, flags, usb1, usb2, usb3) /**/
+#  define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/
 #  define ufs_print_cylinder_stuff(sb, cg) /**/
 #endif /* CONFIG_UFS_DEBUG */
 
-static struct super_operations ufs_super_ops;
+static const struct super_operations ufs_super_ops;
 
 static char error_buf[1024];
 
@@ -422,7 +432,6 @@ static int ufs_read_cylinder_structures(struct super_block *sb)
 {
 	struct ufs_sb_info *sbi = UFS_SB(sb);
 	struct ufs_sb_private_info *uspi = sbi->s_uspi;
-	unsigned flags = sbi->s_flags;
 	struct ufs_buffer_head * ubh;
 	unsigned char * base, * space;
 	unsigned size, blks, i;
@@ -446,11 +455,7 @@ static int ufs_read_cylinder_structures(struct super_block *sb)
 		if (i + uspi->s_fpb > blks)
 			size = (blks - i) * uspi->s_fsize;
 
-		if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 
-			ubh = ubh_bread(sb,
-				fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr) + i, size);
-		else 
-			ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
+		ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
 		
 		if (!ubh)
 			goto failed;
@@ -545,6 +550,7 @@ static void ufs_put_cstotal(struct super_block *sb)
 			cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
 	}
 	ubh_mark_buffer_dirty(USPI_UBH(uspi));
+	ufs_print_super_stuff(sb, usb1, usb2, usb3);
 	UFSD("EXIT\n");
 }
 
@@ -572,7 +578,9 @@ static void ufs_put_super_internal(struct super_block *sb)
 		size = uspi->s_bsize;
 		if (i + uspi->s_fpb > blks)
 			size = (blks - i) * uspi->s_fsize;
+
 		ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
+
 		ubh_memcpyubh (ubh, space, size);
 		space += size;
 		ubh_mark_buffer_uptodate (ubh, 1);
@@ -649,7 +657,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
 		kmalloc (sizeof(struct ufs_sb_private_info), GFP_KERNEL);
 	if (!uspi)
 		goto failed;
-
+	uspi->s_dirblksize = UFS_SECTOR_SIZE;
 	super_block_offset=UFS_SBLOCK;
 
 	/* Keep 2Gig file limit. Some UFS variants need to override 
@@ -674,10 +682,6 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
 		uspi->s_sbsize = super_block_size = 1536;
 		uspi->s_sbbase =  0;
 		flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
-		if (!(sb->s_flags & MS_RDONLY)) {
-			printk(KERN_INFO "ufstype=ufs2 is supported read-only\n");
-			sb->s_flags |= MS_RDONLY;
- 		}
 		break;
 		
 	case UFS_MOUNT_UFSTYPE_SUN:
@@ -718,6 +722,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
 		break;
 	
 	case UFS_MOUNT_UFSTYPE_NEXTSTEP:
+		/*TODO: check may be we need set special dir block size?*/
 		UFSD("ufstype=nextstep\n");
 		uspi->s_fsize = block_size = 1024;
 		uspi->s_fmask = ~(1024 - 1);
@@ -733,6 +738,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
 		break;
 	
 	case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
+		/*TODO: check may be we need set special dir block size?*/
 		UFSD("ufstype=nextstep-cd\n");
 		uspi->s_fsize = block_size = 2048;
 		uspi->s_fmask = ~(2048 - 1);
@@ -754,6 +760,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
 		uspi->s_fshift = 10;
 		uspi->s_sbsize = super_block_size = 2048;
 		uspi->s_sbbase = 0;
+		uspi->s_dirblksize = 1024;
 		flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
 		if (!(sb->s_flags & MS_RDONLY)) {
 			if (!silent)
@@ -887,7 +894,7 @@ magic_found:
 	}
 
 
-	ufs_print_super_stuff(sb, flags, usb1, usb2, usb3);
+	ufs_print_super_stuff(sb, usb1, usb2, usb3);
 
 	/*
 	 * Check, if file system was correctly unmounted.
@@ -970,7 +977,12 @@ magic_found:
 	uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
 	uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
 	uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
-	uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
+
+	if (uspi->fs_magic == UFS2_MAGIC)
+		uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
+	else
+		uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
+
 	uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
 	uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
 	uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
@@ -1057,7 +1069,6 @@ static void ufs_write_super(struct super_block *sb)
 	unsigned flags;
 
 	lock_kernel();
-
 	UFSD("ENTER\n");
 	flags = UFS_SB(sb)->s_flags;
 	uspi = UFS_SB(sb)->s_uspi;
@@ -1153,7 +1164,8 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
 #else
 		if (ufstype != UFS_MOUNT_UFSTYPE_SUN && 
 		    ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
-		    ufstype != UFS_MOUNT_UFSTYPE_SUNx86) {
+		    ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
+		    ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
 			printk("this ufstype is read-only supported\n");
 			return -EINVAL;
 		}
@@ -1252,7 +1264,7 @@ static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t);
 static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t);
 #endif
 
-static struct super_operations ufs_super_ops = {
+static const struct super_operations ufs_super_ops = {
 	.alloc_inode	= ufs_alloc_inode,
 	.destroy_inode	= ufs_destroy_inode,
 	.read_inode	= ufs_read_inode,
diff --git a/fs/ufs/symlink.c b/fs/ufs/symlink.c
index 337512e..d8549f8 100644
--- a/fs/ufs/symlink.c
+++ b/fs/ufs/symlink.c
@@ -36,7 +36,7 @@ static void *ufs_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return NULL;
 }
 
-struct inode_operations ufs_fast_symlink_inode_operations = {
+const struct inode_operations ufs_fast_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= ufs_follow_link,
 };
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
index 0437b0a..749581f 100644
--- a/fs/ufs/truncate.c
+++ b/fs/ufs/truncate.c
@@ -30,8 +30,8 @@
  */
 
 /*
- * Modified to avoid infinite loop on 2006 by
- * Evgeniy Dushistov <dushistov@mail.ru>
+ * Adoptation to use page cache and UFS2 write support by
+ * Evgeniy Dushistov <dushistov@mail.ru>, 2006-2007
  */
 
 #include <linux/errno.h>
@@ -63,13 +63,13 @@
 #define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift)
 
 
-static int ufs_trunc_direct (struct inode * inode)
+static int ufs_trunc_direct(struct inode *inode)
 {
 	struct ufs_inode_info *ufsi = UFS_I(inode);
 	struct super_block * sb;
 	struct ufs_sb_private_info * uspi;
-	__fs32 * p;
-	unsigned frag1, frag2, frag3, frag4, block1, block2;
+	void *p;
+	u64 frag1, frag2, frag3, frag4, block1, block2;
 	unsigned frag_to_free, free_count;
 	unsigned i, tmp;
 	int retry;
@@ -91,13 +91,16 @@ static int ufs_trunc_direct (struct inode * inode)
 	if (frag2 > frag3) {
 		frag2 = frag4;
 		frag3 = frag4 = 0;
-	}
-	else if (frag2 < frag3) {
+	} else if (frag2 < frag3) {
 		block1 = ufs_fragstoblks (frag2);
 		block2 = ufs_fragstoblks (frag3);
 	}
 
-	UFSD("frag1 %u, frag2 %u, block1 %u, block2 %u, frag3 %u, frag4 %u\n", frag1, frag2, block1, block2, frag3, frag4);
+	UFSD("frag1 %llu, frag2 %llu, block1 %llu, block2 %llu, frag3 %llu,"
+	     " frag4 %llu\n",
+	     (unsigned long long)frag1, (unsigned long long)frag2,
+	     (unsigned long long)block1, (unsigned long long)block2,
+	     (unsigned long long)frag3, (unsigned long long)frag4);
 
 	if (frag1 >= frag2)
 		goto next1;		
@@ -105,8 +108,8 @@ static int ufs_trunc_direct (struct inode * inode)
 	/*
 	 * Free first free fragments
 	 */
-	p = ufsi->i_u1.i_data + ufs_fragstoblks (frag1);
-	tmp = fs32_to_cpu(sb, *p);
+	p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1));
+	tmp = ufs_data_ptr_to_cpu(sb, p);
 	if (!tmp )
 		ufs_panic (sb, "ufs_trunc_direct", "internal error");
 	frag2 -= frag1;
@@ -121,12 +124,11 @@ next1:
 	 * Free whole blocks
 	 */
 	for (i = block1 ; i < block2; i++) {
-		p = ufsi->i_u1.i_data + i;
-		tmp = fs32_to_cpu(sb, *p);
+		p = ufs_get_direct_data_ptr(uspi, ufsi, i);
+		tmp = ufs_data_ptr_to_cpu(sb, p);
 		if (!tmp)
 			continue;
-
-		*p = 0;
+		ufs_data_ptr_clear(uspi, p);
 
 		if (free_count == 0) {
 			frag_to_free = tmp;
@@ -150,13 +152,12 @@ next1:
 	/*
 	 * Free last free fragments
 	 */
-	p = ufsi->i_u1.i_data + ufs_fragstoblks (frag3);
-	tmp = fs32_to_cpu(sb, *p);
+	p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3));
+	tmp = ufs_data_ptr_to_cpu(sb, p);
 	if (!tmp )
 		ufs_panic(sb, "ufs_truncate_direct", "internal error");
 	frag4 = ufs_fragnum (frag4);
-
-	*p = 0;
+	ufs_data_ptr_clear(uspi, p);
 
 	ufs_free_fragments (inode, tmp, frag4);
 	mark_inode_dirty(inode);
@@ -167,17 +168,20 @@ next1:
 }
 
 
-static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p)
+static int ufs_trunc_indirect(struct inode *inode, u64 offset, void *p)
 {
 	struct super_block * sb;
 	struct ufs_sb_private_info * uspi;
 	struct ufs_buffer_head * ind_ubh;
-	__fs32 * ind;
-	unsigned indirect_block, i, tmp;
-	unsigned frag_to_free, free_count;
+	void *ind;
+	u64 tmp, indirect_block, i, frag_to_free;
+	unsigned free_count;
 	int retry;
 
-	UFSD("ENTER\n");
+	UFSD("ENTER: ino %lu, offset %llu, p: %p\n",
+	     inode->i_ino, (unsigned long long)offset, p);
+
+	BUG_ON(!p);
 		
 	sb = inode->i_sb;
 	uspi = UFS_SB(sb)->s_uspi;
@@ -186,27 +190,27 @@ static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p)
 	free_count = 0;
 	retry = 0;
 	
-	tmp = fs32_to_cpu(sb, *p);
+	tmp = ufs_data_ptr_to_cpu(sb, p);
 	if (!tmp)
 		return 0;
 	ind_ubh = ubh_bread(sb, tmp, uspi->s_bsize);
-	if (tmp != fs32_to_cpu(sb, *p)) {
+	if (tmp != ufs_data_ptr_to_cpu(sb, p)) {
 		ubh_brelse (ind_ubh);
 		return 1;
 	}
 	if (!ind_ubh) {
-		*p = 0;
+		ufs_data_ptr_clear(uspi, p);
 		return 0;
 	}
 
 	indirect_block = (DIRECT_BLOCK > offset) ? (DIRECT_BLOCK - offset) : 0;
 	for (i = indirect_block; i < uspi->s_apb; i++) {
-		ind = ubh_get_addr32 (ind_ubh, i);
-		tmp = fs32_to_cpu(sb, *ind);
+		ind = ubh_get_data_ptr(uspi, ind_ubh, i);
+		tmp = ufs_data_ptr_to_cpu(sb, ind);
 		if (!tmp)
 			continue;
 
-		*ind = 0;
+		ufs_data_ptr_clear(uspi, ind);
 		ubh_mark_buffer_dirty(ind_ubh);
 		if (free_count == 0) {
 			frag_to_free = tmp;
@@ -226,11 +230,12 @@ static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p)
 		ufs_free_blocks (inode, frag_to_free, free_count);
 	}
 	for (i = 0; i < uspi->s_apb; i++)
-		if (*ubh_get_addr32(ind_ubh,i))
+		if (!ufs_is_data_ptr_zero(uspi,
+					  ubh_get_data_ptr(uspi, ind_ubh, i)))
 			break;
 	if (i >= uspi->s_apb) {
-		tmp = fs32_to_cpu(sb, *p);
-		*p = 0;
+		tmp = ufs_data_ptr_to_cpu(sb, p);
+		ufs_data_ptr_clear(uspi, p);
 
 		ufs_free_blocks (inode, tmp, uspi->s_fpb);
 		mark_inode_dirty(inode);
@@ -248,13 +253,13 @@ static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p)
 	return retry;
 }
 
-static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p)
+static int ufs_trunc_dindirect(struct inode *inode, u64 offset, void *p)
 {
 	struct super_block * sb;
 	struct ufs_sb_private_info * uspi;
-	struct ufs_buffer_head * dind_bh;
-	unsigned i, tmp, dindirect_block;
-	__fs32 * dind;
+	struct ufs_buffer_head *dind_bh;
+	u64 i, tmp, dindirect_block;
+	void *dind;
 	int retry = 0;
 	
 	UFSD("ENTER\n");
@@ -266,22 +271,22 @@ static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p)
 		? ((DIRECT_BLOCK - offset) >> uspi->s_apbshift) : 0;
 	retry = 0;
 	
-	tmp = fs32_to_cpu(sb, *p);
+	tmp = ufs_data_ptr_to_cpu(sb, p);
 	if (!tmp)
 		return 0;
 	dind_bh = ubh_bread(sb, tmp, uspi->s_bsize);
-	if (tmp != fs32_to_cpu(sb, *p)) {
+	if (tmp != ufs_data_ptr_to_cpu(sb, p)) {
 		ubh_brelse (dind_bh);
 		return 1;
 	}
 	if (!dind_bh) {
-		*p = 0;
+		ufs_data_ptr_clear(uspi, p);
 		return 0;
 	}
 
 	for (i = dindirect_block ; i < uspi->s_apb ; i++) {
-		dind = ubh_get_addr32 (dind_bh, i);
-		tmp = fs32_to_cpu(sb, *dind);
+		dind = ubh_get_data_ptr(uspi, dind_bh, i);
+		tmp = ufs_data_ptr_to_cpu(sb, dind);
 		if (!tmp)
 			continue;
 		retry |= ufs_trunc_indirect (inode, offset + (i << uspi->s_apbshift), dind);
@@ -289,11 +294,12 @@ static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p)
 	}
 
 	for (i = 0; i < uspi->s_apb; i++)
-		if (*ubh_get_addr32 (dind_bh, i))
+		if (!ufs_is_data_ptr_zero(uspi,
+					  ubh_get_data_ptr(uspi, dind_bh, i)))
 			break;
 	if (i >= uspi->s_apb) {
-		tmp = fs32_to_cpu(sb, *p);
-		*p = 0;
+		tmp = ufs_data_ptr_to_cpu(sb, p);
+		ufs_data_ptr_clear(uspi, p);
 
 		ufs_free_blocks(inode, tmp, uspi->s_fpb);
 		mark_inode_dirty(inode);
@@ -311,34 +317,33 @@ static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p)
 	return retry;
 }
 
-static int ufs_trunc_tindirect (struct inode * inode)
+static int ufs_trunc_tindirect(struct inode *inode)
 {
+	struct super_block *sb = inode->i_sb;
+	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
 	struct ufs_inode_info *ufsi = UFS_I(inode);
-	struct super_block * sb;
-	struct ufs_sb_private_info * uspi;
 	struct ufs_buffer_head * tind_bh;
-	unsigned tindirect_block, tmp, i;
-	__fs32 * tind, * p;
+	u64 tindirect_block, tmp, i;
+	void *tind, *p;
 	int retry;
 	
 	UFSD("ENTER\n");
 
-	sb = inode->i_sb;
-	uspi = UFS_SB(sb)->s_uspi;
 	retry = 0;
 	
 	tindirect_block = (DIRECT_BLOCK > (UFS_NDADDR + uspi->s_apb + uspi->s_2apb))
 		? ((DIRECT_BLOCK - UFS_NDADDR - uspi->s_apb - uspi->s_2apb) >> uspi->s_2apbshift) : 0;
-	p = ufsi->i_u1.i_data + UFS_TIND_BLOCK;
-	if (!(tmp = fs32_to_cpu(sb, *p)))
+
+	p = ufs_get_direct_data_ptr(uspi, ufsi, UFS_TIND_BLOCK);
+	if (!(tmp = ufs_data_ptr_to_cpu(sb, p)))
 		return 0;
 	tind_bh = ubh_bread (sb, tmp, uspi->s_bsize);
-	if (tmp != fs32_to_cpu(sb, *p)) {
+	if (tmp != ufs_data_ptr_to_cpu(sb, p)) {
 		ubh_brelse (tind_bh);
 		return 1;
 	}
 	if (!tind_bh) {
-		*p = 0;
+		ufs_data_ptr_clear(uspi, p);
 		return 0;
 	}
 
@@ -349,11 +354,12 @@ static int ufs_trunc_tindirect (struct inode * inode)
 		ubh_mark_buffer_dirty(tind_bh);
 	}
 	for (i = 0; i < uspi->s_apb; i++)
-		if (*ubh_get_addr32 (tind_bh, i))
+		if (!ufs_is_data_ptr_zero(uspi,
+					  ubh_get_data_ptr(uspi, tind_bh, i)))
 			break;
 	if (i >= uspi->s_apb) {
-		tmp = fs32_to_cpu(sb, *p);
-		*p = 0;
+		tmp = ufs_data_ptr_to_cpu(sb, p);
+		ufs_data_ptr_clear(uspi, p);
 
 		ufs_free_blocks(inode, tmp, uspi->s_fpb);
 		mark_inode_dirty(inode);
@@ -375,7 +381,8 @@ static int ufs_alloc_lastblock(struct inode *inode)
 	int err = 0;
 	struct address_space *mapping = inode->i_mapping;
 	struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi;
-	unsigned lastfrag, i, end;
+	unsigned i, end;
+	sector_t lastfrag;
 	struct page *lastpage;
 	struct buffer_head *bh;
 
@@ -430,7 +437,9 @@ int ufs_truncate(struct inode *inode, loff_t old_i_size)
 	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
 	int retry, err = 0;
 	
-	UFSD("ENTER\n");
+	UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n",
+	     inode->i_ino, (unsigned long long)i_size_read(inode),
+	     (unsigned long long)old_i_size);
 
 	if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
 	      S_ISLNK(inode->i_mode)))
@@ -450,10 +459,12 @@ int ufs_truncate(struct inode *inode, loff_t old_i_size)
 	lock_kernel();
 	while (1) {
 		retry = ufs_trunc_direct(inode);
-		retry |= ufs_trunc_indirect (inode, UFS_IND_BLOCK,
-			(__fs32 *) &ufsi->i_u1.i_data[UFS_IND_BLOCK]);
-		retry |= ufs_trunc_dindirect (inode, UFS_IND_BLOCK + uspi->s_apb,
-			(__fs32 *) &ufsi->i_u1.i_data[UFS_DIND_BLOCK]);
+		retry |= ufs_trunc_indirect(inode, UFS_IND_BLOCK,
+					    ufs_get_direct_data_ptr(uspi, ufsi,
+								    UFS_IND_BLOCK));
+		retry |= ufs_trunc_dindirect(inode, UFS_IND_BLOCK + uspi->s_apb,
+					     ufs_get_direct_data_ptr(uspi, ufsi,
+								     UFS_DIND_BLOCK));
 		retry |= ufs_trunc_tindirect (inode);
 		if (!retry)
 			break;
@@ -502,6 +513,6 @@ static int ufs_setattr(struct dentry *dentry, struct iattr *attr)
 	return inode_setattr(inode, attr);
 }
 
-struct inode_operations ufs_file_inode_operations = {
+const struct inode_operations ufs_file_inode_operations = {
 	.setattr = ufs_setattr,
 };
diff --git a/fs/ufs/util.h b/fs/ufs/util.h
index 7dd12bb..06d3448 100644
--- a/fs/ufs/util.h
+++ b/fs/ufs/util.h
@@ -305,8 +305,22 @@ static inline void *get_usb_offset(struct ufs_sb_private_info *uspi,
 	(((__fs32*)((ubh)->bh[(begin) >> (uspi->s_fshift-2)]->b_data)) + \
 	((begin) & ((uspi->s_fsize>>2) - 1)))
 
+#define ubh_get_addr64(ubh,begin) \
+	(((__fs64*)((ubh)->bh[(begin) >> (uspi->s_fshift-3)]->b_data)) + \
+	((begin) & ((uspi->s_fsize>>3) - 1)))
+
 #define ubh_get_addr ubh_get_addr8
 
+static inline void *ubh_get_data_ptr(struct ufs_sb_private_info *uspi,
+				     struct ufs_buffer_head *ubh,
+				     u64 blk)
+{
+	if (uspi->fs_magic == UFS2_MAGIC)
+		return ubh_get_addr64(ubh, blk);
+	else
+		return ubh_get_addr32(ubh, blk);
+}
+
 #define ubh_blkmap(ubh,begin,bit) \
 	((*ubh_get_addr(ubh, (begin) + ((bit) >> 3)) >> ((bit) & 7)) & (0xff >> (UFS_MAXFRAG - uspi->s_fpb)))
 
@@ -507,3 +521,46 @@ static inline void ufs_fragacct (struct super_block * sb, unsigned blockmap,
 	if (fragsize > 0 && fragsize < uspi->s_fpb)
 		fs32_add(sb, &fraglist[fragsize], cnt);
 }
+
+static inline void *ufs_get_direct_data_ptr(struct ufs_sb_private_info *uspi,
+					    struct ufs_inode_info *ufsi,
+					    unsigned blk)
+{
+	BUG_ON(blk > UFS_TIND_BLOCK);
+	return uspi->fs_magic == UFS2_MAGIC ?
+		(void *)&ufsi->i_u1.u2_i_data[blk] :
+		(void *)&ufsi->i_u1.i_data[blk];
+}
+
+static inline u64 ufs_data_ptr_to_cpu(struct super_block *sb, void *p)
+{
+	return UFS_SB(sb)->s_uspi->fs_magic == UFS2_MAGIC ?
+		fs64_to_cpu(sb, *(__fs64 *)p) :
+		fs32_to_cpu(sb, *(__fs32 *)p);
+}
+
+static inline void ufs_cpu_to_data_ptr(struct super_block *sb, void *p, u64 val)
+{
+	if (UFS_SB(sb)->s_uspi->fs_magic == UFS2_MAGIC)
+		*(__fs64 *)p = cpu_to_fs64(sb, val);
+	else
+		*(__fs32 *)p = cpu_to_fs32(sb, val);
+}
+
+static inline void ufs_data_ptr_clear(struct ufs_sb_private_info *uspi,
+				      void *p)
+{
+	if (uspi->fs_magic == UFS2_MAGIC)
+		*(__fs64 *)p = 0;
+	else
+		*(__fs32 *)p = 0;
+}
+
+static inline int ufs_is_data_ptr_zero(struct ufs_sb_private_info *uspi,
+				       void *p)
+{
+	if (uspi->fs_magic == UFS2_MAGIC)
+		return *(__fs64 *)p == 0;
+	else
+		return *(__fs32 *)p == 0;
+}
diff --git a/fs/vfat/namei.c b/fs/vfat/namei.c
index 0afd745..c28add2 100644
--- a/fs/vfat/namei.c
+++ b/fs/vfat/namei.c
@@ -996,7 +996,7 @@ error_inode:
 	goto out;
 }
 
-static struct inode_operations vfat_dir_inode_operations = {
+static const struct inode_operations vfat_dir_inode_operations = {
 	.create		= vfat_create,
 	.lookup		= vfat_lookup,
 	.unlink		= vfat_unlink,
diff --git a/fs/xfs/linux-2.6/mrlock.h b/fs/xfs/linux-2.6/mrlock.h
index 32e1ce0..af168a1 100644
--- a/fs/xfs/linux-2.6/mrlock.h
+++ b/fs/xfs/linux-2.6/mrlock.h
@@ -31,15 +31,13 @@ typedef struct {
 	do { (mrp)->mr_writer = 0; init_rwsem(&(mrp)->mr_lock); } while (0)
 #define mrlock_init(mrp, t,n,s)	mrinit(mrp, n)
 #define mrfree(mrp)		do { } while (0)
-#define mraccess(mrp)		mraccessf(mrp, 0)
-#define mrupdate(mrp)		mrupdatef(mrp, 0)
 
-static inline void mraccessf(mrlock_t *mrp, int flags)
+static inline void mraccess(mrlock_t *mrp)
 {
 	down_read(&mrp->mr_lock);
 }
 
-static inline void mrupdatef(mrlock_t *mrp, int flags)
+static inline void mrupdate(mrlock_t *mrp)
 {
 	down_write(&mrp->mr_lock);
 	mrp->mr_writer = 1;
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 7b54461..143ffc8 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -56,8 +56,6 @@ xfs_count_page_state(
 	do {
 		if (buffer_uptodate(bh) && !buffer_mapped(bh))
 			(*unmapped) = 1;
-		else if (buffer_unwritten(bh) && !buffer_delay(bh))
-			clear_buffer_unwritten(bh);
 		else if (buffer_unwritten(bh))
 			(*unwritten) = 1;
 		else if (buffer_delay(bh))
@@ -249,7 +247,7 @@ xfs_map_blocks(
 	return -error;
 }
 
-STATIC inline int
+STATIC_INLINE int
 xfs_iomap_valid(
 	xfs_iomap_t		*iomapp,
 	loff_t			offset)
@@ -1272,7 +1270,6 @@ __xfs_get_blocks(
 			if (direct)
 				bh_result->b_private = inode;
 			set_buffer_unwritten(bh_result);
-			set_buffer_delay(bh_result);
 		}
 	}
 
@@ -1283,13 +1280,18 @@ __xfs_get_blocks(
 	bh_result->b_bdev = iomap.iomap_target->bt_bdev;
 
 	/*
-	 * If we previously allocated a block out beyond eof and we are
-	 * now coming back to use it then we will need to flag it as new
-	 * even if it has a disk address.
+	 * If we previously allocated a block out beyond eof and we are now
+	 * coming back to use it then we will need to flag it as new even if it
+	 * has a disk address.
+	 *
+	 * With sub-block writes into unwritten extents we also need to mark
+	 * the buffer as new so that the unwritten parts of the buffer gets
+	 * correctly zeroed.
 	 */
 	if (create &&
 	    ((!buffer_mapped(bh_result) && !buffer_uptodate(bh_result)) ||
-	     (offset >= i_size_read(inode)) || (iomap.iomap_flags & IOMAP_NEW)))
+	     (offset >= i_size_read(inode)) ||
+	     (iomap.iomap_flags & (IOMAP_NEW|IOMAP_UNWRITTEN))))
 		set_buffer_new(bh_result);
 
 	if (iomap.iomap_flags & IOMAP_DELAY) {
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 4fb01ff..e2bea6a 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -34,13 +34,13 @@
 #include <linux/backing-dev.h>
 #include <linux/freezer.h>
 
-STATIC kmem_zone_t *xfs_buf_zone;
-STATIC kmem_shaker_t xfs_buf_shake;
+static kmem_zone_t *xfs_buf_zone;
+static kmem_shaker_t xfs_buf_shake;
 STATIC int xfsbufd(void *);
 STATIC int xfsbufd_wakeup(int, gfp_t);
 STATIC void xfs_buf_delwri_queue(xfs_buf_t *, int);
 
-STATIC struct workqueue_struct *xfslogd_workqueue;
+static struct workqueue_struct *xfslogd_workqueue;
 struct workqueue_struct *xfsdatad_workqueue;
 
 #ifdef XFS_BUF_TRACE
@@ -139,7 +139,7 @@ page_region_mask(
 	return mask;
 }
 
-STATIC inline void
+STATIC_INLINE void
 set_page_region(
 	struct page	*page,
 	size_t		offset,
@@ -151,7 +151,7 @@ set_page_region(
 		SetPageUptodate(page);
 }
 
-STATIC inline int
+STATIC_INLINE int
 test_page_region(
 	struct page	*page,
 	size_t		offset,
@@ -171,9 +171,9 @@ typedef struct a_list {
 	struct a_list	*next;
 } a_list_t;
 
-STATIC a_list_t		*as_free_head;
-STATIC int		as_list_len;
-STATIC DEFINE_SPINLOCK(as_lock);
+static a_list_t		*as_free_head;
+static int		as_list_len;
+static DEFINE_SPINLOCK(as_lock);
 
 /*
  *	Try to batch vunmaps because they are costly.
@@ -1085,7 +1085,7 @@ xfs_buf_iostart(
 	return status;
 }
 
-STATIC __inline__ int
+STATIC_INLINE int
 _xfs_buf_iolocked(
 	xfs_buf_t		*bp)
 {
@@ -1095,7 +1095,7 @@ _xfs_buf_iolocked(
 	return 0;
 }
 
-STATIC __inline__ void
+STATIC_INLINE void
 _xfs_buf_ioend(
 	xfs_buf_t		*bp,
 	int			schedule)
@@ -1426,8 +1426,8 @@ xfs_free_bufhash(
 /*
  *	buftarg list for delwrite queue processing
  */
-STATIC LIST_HEAD(xfs_buftarg_list);
-STATIC DEFINE_SPINLOCK(xfs_buftarg_lock);
+LIST_HEAD(xfs_buftarg_list);
+static DEFINE_SPINLOCK(xfs_buftarg_lock);
 
 STATIC void
 xfs_register_buftarg(
@@ -1679,21 +1679,60 @@ xfsbufd_wakeup(
 	return 0;
 }
 
+/*
+ * Move as many buffers as specified to the supplied list
+ * idicating if we skipped any buffers to prevent deadlocks.
+ */
+STATIC int
+xfs_buf_delwri_split(
+	xfs_buftarg_t	*target,
+	struct list_head *list,
+	unsigned long	age)
+{
+	xfs_buf_t	*bp, *n;
+	struct list_head *dwq = &target->bt_delwrite_queue;
+	spinlock_t	*dwlk = &target->bt_delwrite_lock;
+	int		skipped = 0;
+	int		force;
+
+	force = test_and_clear_bit(XBT_FORCE_FLUSH, &target->bt_flags);
+	INIT_LIST_HEAD(list);
+	spin_lock(dwlk);
+	list_for_each_entry_safe(bp, n, dwq, b_list) {
+		XB_TRACE(bp, "walkq1", (long)xfs_buf_ispin(bp));
+		ASSERT(bp->b_flags & XBF_DELWRI);
+
+		if (!xfs_buf_ispin(bp) && !xfs_buf_cond_lock(bp)) {
+			if (!force &&
+			    time_before(jiffies, bp->b_queuetime + age)) {
+				xfs_buf_unlock(bp);
+				break;
+			}
+
+			bp->b_flags &= ~(XBF_DELWRI|_XBF_DELWRI_Q|
+					 _XBF_RUN_QUEUES);
+			bp->b_flags |= XBF_WRITE;
+			list_move_tail(&bp->b_list, list);
+		} else
+			skipped++;
+	}
+	spin_unlock(dwlk);
+
+	return skipped;
+
+}
+
 STATIC int
 xfsbufd(
-	void			*data)
+	void		*data)
 {
-	struct list_head	tmp;
-	unsigned long		age;
-	xfs_buftarg_t		*target = (xfs_buftarg_t *)data;
-	xfs_buf_t		*bp, *n;
-	struct list_head	*dwq = &target->bt_delwrite_queue;
-	spinlock_t		*dwlk = &target->bt_delwrite_lock;
-	int			count;
+	struct list_head tmp;
+	xfs_buftarg_t	*target = (xfs_buftarg_t *)data;
+	int		count;
+	xfs_buf_t	*bp;
 
 	current->flags |= PF_MEMALLOC;
 
-	INIT_LIST_HEAD(&tmp);
 	do {
 		if (unlikely(freezing(current))) {
 			set_bit(XBT_FORCE_SLEEP, &target->bt_flags);
@@ -1705,37 +1744,17 @@ xfsbufd(
 		schedule_timeout_interruptible(
 			xfs_buf_timer_centisecs * msecs_to_jiffies(10));
 
-		count = 0;
-		age = xfs_buf_age_centisecs * msecs_to_jiffies(10);
-		spin_lock(dwlk);
-		list_for_each_entry_safe(bp, n, dwq, b_list) {
-			XB_TRACE(bp, "walkq1", (long)xfs_buf_ispin(bp));
-			ASSERT(bp->b_flags & XBF_DELWRI);
-
-			if (!xfs_buf_ispin(bp) && !xfs_buf_cond_lock(bp)) {
-				if (!test_bit(XBT_FORCE_FLUSH,
-						&target->bt_flags) &&
-				    time_before(jiffies,
-						bp->b_queuetime + age)) {
-					xfs_buf_unlock(bp);
-					break;
-				}
-
-				bp->b_flags &= ~(XBF_DELWRI|_XBF_DELWRI_Q|
-						 _XBF_RUN_QUEUES);
-				bp->b_flags |= XBF_WRITE;
-				list_move_tail(&bp->b_list, &tmp);
-				count++;
-			}
-		}
-		spin_unlock(dwlk);
+		xfs_buf_delwri_split(target, &tmp,
+				xfs_buf_age_centisecs * msecs_to_jiffies(10));
 
+		count = 0;
 		while (!list_empty(&tmp)) {
 			bp = list_entry(tmp.next, xfs_buf_t, b_list);
 			ASSERT(target == bp->b_target);
 
 			list_del_init(&bp->b_list);
 			xfs_buf_iostrategy(bp);
+			count++;
 		}
 
 		if (as_list_len > 0)
@@ -1743,7 +1762,6 @@ xfsbufd(
 		if (count)
 			blk_run_address_space(target->bt_mapping);
 
-		clear_bit(XBT_FORCE_FLUSH, &target->bt_flags);
 	} while (!kthread_should_stop());
 
 	return 0;
@@ -1756,40 +1774,24 @@ xfsbufd(
  */
 int
 xfs_flush_buftarg(
-	xfs_buftarg_t		*target,
-	int			wait)
+	xfs_buftarg_t	*target,
+	int		wait)
 {
-	struct list_head	tmp;
-	xfs_buf_t		*bp, *n;
-	int			pincount = 0;
-	struct list_head	*dwq = &target->bt_delwrite_queue;
-	spinlock_t		*dwlk = &target->bt_delwrite_lock;
+	struct list_head tmp;
+	xfs_buf_t	*bp, *n;
+	int		pincount = 0;
 
 	xfs_buf_runall_queues(xfsdatad_workqueue);
 	xfs_buf_runall_queues(xfslogd_workqueue);
 
-	INIT_LIST_HEAD(&tmp);
-	spin_lock(dwlk);
-	list_for_each_entry_safe(bp, n, dwq, b_list) {
-		ASSERT(bp->b_target == target);
-		ASSERT(bp->b_flags & (XBF_DELWRI | _XBF_DELWRI_Q));
-		XB_TRACE(bp, "walkq2", (long)xfs_buf_ispin(bp));
-		if (xfs_buf_ispin(bp)) {
-			pincount++;
-			continue;
-		}
-
-		list_move_tail(&bp->b_list, &tmp);
-	}
-	spin_unlock(dwlk);
+	set_bit(XBT_FORCE_FLUSH, &target->bt_flags);
+	pincount = xfs_buf_delwri_split(target, &tmp, 0);
 
 	/*
 	 * Dropped the delayed write list lock, now walk the temporary list
 	 */
 	list_for_each_entry_safe(bp, n, &tmp, b_list) {
-		xfs_buf_lock(bp);
-		bp->b_flags &= ~(XBF_DELWRI|_XBF_DELWRI_Q|_XBF_RUN_QUEUES);
-		bp->b_flags |= XBF_WRITE;
+		ASSERT(target == bp->b_target);
 		if (wait)
 			bp->b_flags &= ~XBF_ASYNC;
 		else
diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h
index 9dd235c..9e8ef8f 100644
--- a/fs/xfs/linux-2.6/xfs_buf.h
+++ b/fs/xfs/linux-2.6/xfs_buf.h
@@ -69,8 +69,8 @@ typedef enum {
 } xfs_buf_flags_t;
 
 typedef enum {
-	XBT_FORCE_SLEEP = (0 << 1),
-	XBT_FORCE_FLUSH = (1 << 1),
+	XBT_FORCE_SLEEP = 0,
+	XBT_FORCE_FLUSH = 1,
 } xfs_buftarg_flags_t;
 
 typedef struct xfs_bufhash {
diff --git a/fs/xfs/linux-2.6/xfs_export.c b/fs/xfs/linux-2.6/xfs_export.c
index 5fb75d9..e3a5fed 100644
--- a/fs/xfs/linux-2.6/xfs_export.c
+++ b/fs/xfs/linux-2.6/xfs_export.c
@@ -24,7 +24,7 @@
 #include "xfs_mount.h"
 #include "xfs_export.h"
 
-STATIC struct dentry dotdot = { .d_name.name = "..", .d_name.len = 2, };
+static struct dentry dotdot = { .d_name.name = "..", .d_name.len = 2, };
 
 /*
  * XFS encodes and decodes the fileid portion of NFS filehandles
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index d26f5cd..cb51dc9 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -46,7 +46,7 @@ static struct vm_operations_struct xfs_file_vm_ops;
 static struct vm_operations_struct xfs_dmapi_file_vm_ops;
 #endif
 
-STATIC inline ssize_t
+STATIC_INLINE ssize_t
 __xfs_file_read(
 	struct kiocb		*iocb,
 	const struct iovec	*iov,
@@ -84,7 +84,7 @@ xfs_file_aio_read_invis(
 	return __xfs_file_read(iocb, iov, nr_segs, IO_ISAIO|IO_INVIS, pos);
 }
 
-STATIC inline ssize_t
+STATIC_INLINE ssize_t
 __xfs_file_write(
 	struct kiocb		*iocb,
 	const struct iovec	*iov,
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index f011c9c..ff5c41f 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -41,8 +41,6 @@
 #include "xfs_error.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_bmap.h"
 #include "xfs_buf_item.h"
@@ -355,7 +353,6 @@ STATIC int
 xfs_readlink_by_handle(
 	xfs_mount_t		*mp,
 	void			__user *arg,
-	struct file		*parfilp,
 	struct inode		*parinode)
 {
 	int			error;
@@ -388,7 +385,7 @@ xfs_readlink_by_handle(
 	aiov.iov_len	= olen;
 	aiov.iov_base	= hreq.ohandle;
 
-	auio.uio_iov	= &aiov;
+	auio.uio_iov	= (struct kvec *)&aiov;
 	auio.uio_iovcnt	= 1;
 	auio.uio_offset	= 0;
 	auio.uio_segflg	= UIO_USERSPACE;
@@ -406,7 +403,6 @@ STATIC int
 xfs_fssetdm_by_handle(
 	xfs_mount_t		*mp,
 	void			__user *arg,
-	struct file		*parfilp,
 	struct inode		*parinode)
 {
 	int			error;
@@ -448,7 +444,6 @@ STATIC int
 xfs_attrlist_by_handle(
 	xfs_mount_t		*mp,
 	void			__user *arg,
-	struct file		*parfilp,
 	struct inode		*parinode)
 {
 	int			error;
@@ -569,7 +564,6 @@ STATIC int
 xfs_attrmulti_by_handle(
 	xfs_mount_t		*mp,
 	void			__user *arg,
-	struct file		*parfilp,
 	struct inode		*parinode)
 {
 	int			error;
@@ -689,7 +683,6 @@ xfs_ioc_xattr(
 STATIC int
 xfs_ioc_getbmap(
 	bhv_desc_t		*bdp,
-	struct file		*filp,
 	int			flags,
 	unsigned int		cmd,
 	void			__user *arg);
@@ -788,7 +781,7 @@ xfs_ioctl(
 
 	case XFS_IOC_GETBMAP:
 	case XFS_IOC_GETBMAPA:
-		return xfs_ioc_getbmap(bdp, filp, ioflags, cmd, arg);
+		return xfs_ioc_getbmap(bdp, ioflags, cmd, arg);
 
 	case XFS_IOC_GETBMAPX:
 		return xfs_ioc_getbmapx(bdp, arg);
@@ -802,16 +795,16 @@ xfs_ioctl(
 		return xfs_open_by_handle(mp, arg, filp, inode);
 
 	case XFS_IOC_FSSETDM_BY_HANDLE:
-		return xfs_fssetdm_by_handle(mp, arg, filp, inode);
+		return xfs_fssetdm_by_handle(mp, arg, inode);
 
 	case XFS_IOC_READLINK_BY_HANDLE:
-		return xfs_readlink_by_handle(mp, arg, filp, inode);
+		return xfs_readlink_by_handle(mp, arg, inode);
 
 	case XFS_IOC_ATTRLIST_BY_HANDLE:
-		return xfs_attrlist_by_handle(mp, arg, filp, inode);
+		return xfs_attrlist_by_handle(mp, arg, inode);
 
 	case XFS_IOC_ATTRMULTI_BY_HANDLE:
-		return xfs_attrmulti_by_handle(mp, arg, filp, inode);
+		return xfs_attrmulti_by_handle(mp, arg, inode);
 
 	case XFS_IOC_SWAPEXT: {
 		error = xfs_swapext((struct xfs_swapext __user *)arg);
@@ -1095,11 +1088,6 @@ xfs_ioc_fsgeometry(
 /*
  * Linux extended inode flags interface.
  */
-#define LINUX_XFLAG_SYNC	0x00000008 /* Synchronous updates */
-#define LINUX_XFLAG_IMMUTABLE	0x00000010 /* Immutable file */
-#define LINUX_XFLAG_APPEND	0x00000020 /* writes to file may only append */
-#define LINUX_XFLAG_NODUMP	0x00000040 /* do not dump file */
-#define LINUX_XFLAG_NOATIME	0x00000080 /* do not update atime */
 
 STATIC unsigned int
 xfs_merge_ioc_xflags(
@@ -1108,23 +1096,23 @@ xfs_merge_ioc_xflags(
 {
 	unsigned int	xflags = start;
 
-	if (flags & LINUX_XFLAG_IMMUTABLE)
+	if (flags & FS_IMMUTABLE_FL)
 		xflags |= XFS_XFLAG_IMMUTABLE;
 	else
 		xflags &= ~XFS_XFLAG_IMMUTABLE;
-	if (flags & LINUX_XFLAG_APPEND)
+	if (flags & FS_APPEND_FL)
 		xflags |= XFS_XFLAG_APPEND;
 	else
 		xflags &= ~XFS_XFLAG_APPEND;
-	if (flags & LINUX_XFLAG_SYNC)
+	if (flags & FS_SYNC_FL)
 		xflags |= XFS_XFLAG_SYNC;
 	else
 		xflags &= ~XFS_XFLAG_SYNC;
-	if (flags & LINUX_XFLAG_NOATIME)
+	if (flags & FS_NOATIME_FL)
 		xflags |= XFS_XFLAG_NOATIME;
 	else
 		xflags &= ~XFS_XFLAG_NOATIME;
-	if (flags & LINUX_XFLAG_NODUMP)
+	if (flags & FS_NODUMP_FL)
 		xflags |= XFS_XFLAG_NODUMP;
 	else
 		xflags &= ~XFS_XFLAG_NODUMP;
@@ -1139,15 +1127,15 @@ xfs_di2lxflags(
 	unsigned int	flags = 0;
 
 	if (di_flags & XFS_DIFLAG_IMMUTABLE)
-		flags |= LINUX_XFLAG_IMMUTABLE;
+		flags |= FS_IMMUTABLE_FL;
 	if (di_flags & XFS_DIFLAG_APPEND)
-		flags |= LINUX_XFLAG_APPEND;
+		flags |= FS_APPEND_FL;
 	if (di_flags & XFS_DIFLAG_SYNC)
-		flags |= LINUX_XFLAG_SYNC;
+		flags |= FS_SYNC_FL;
 	if (di_flags & XFS_DIFLAG_NOATIME)
-		flags |= LINUX_XFLAG_NOATIME;
+		flags |= FS_NOATIME_FL;
 	if (di_flags & XFS_DIFLAG_NODUMP)
-		flags |= LINUX_XFLAG_NODUMP;
+		flags |= FS_NODUMP_FL;
 	return flags;
 }
 
@@ -1247,9 +1235,9 @@ xfs_ioc_xattr(
 			break;
 		}
 
-		if (flags & ~(LINUX_XFLAG_IMMUTABLE | LINUX_XFLAG_APPEND | \
-			      LINUX_XFLAG_NOATIME | LINUX_XFLAG_NODUMP | \
-			      LINUX_XFLAG_SYNC)) {
+		if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
+			      FS_NOATIME_FL | FS_NODUMP_FL | \
+			      FS_SYNC_FL)) {
 			error = -EOPNOTSUPP;
 			break;
 		}
@@ -1281,7 +1269,6 @@ xfs_ioc_xattr(
 STATIC int
 xfs_ioc_getbmap(
 	bhv_desc_t		*bdp,
-	struct file		*filp,
 	int			ioflags,
 	unsigned int		cmd,
 	void			__user *arg)
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 3ba814a..0b5fa12 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -43,8 +43,6 @@
 #include "xfs_itable.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_buf_item.h"
 #include "xfs_utils.h"
@@ -250,13 +248,13 @@ xfs_init_security(
  *
  * XXX(hch):  nfsd is broken, better fix it instead.
  */
-STATIC inline int
+STATIC_INLINE int
 xfs_has_fs_struct(struct task_struct *task)
 {
 	return (task->fs != init_task.fs);
 }
 
-STATIC inline void
+STATIC void
 xfs_cleanup_inode(
 	bhv_vnode_t	*dvp,
 	bhv_vnode_t	*vp,
@@ -815,7 +813,7 @@ xfs_vn_removexattr(
 }
 
 
-struct inode_operations xfs_inode_operations = {
+const struct inode_operations xfs_inode_operations = {
 	.permission		= xfs_vn_permission,
 	.truncate		= xfs_vn_truncate,
 	.getattr		= xfs_vn_getattr,
@@ -826,7 +824,7 @@ struct inode_operations xfs_inode_operations = {
 	.removexattr		= xfs_vn_removexattr,
 };
 
-struct inode_operations xfs_dir_inode_operations = {
+const struct inode_operations xfs_dir_inode_operations = {
 	.create			= xfs_vn_create,
 	.lookup			= xfs_vn_lookup,
 	.link			= xfs_vn_link,
@@ -845,7 +843,7 @@ struct inode_operations xfs_dir_inode_operations = {
 	.removexattr		= xfs_vn_removexattr,
 };
 
-struct inode_operations xfs_symlink_inode_operations = {
+const struct inode_operations xfs_symlink_inode_operations = {
 	.readlink		= generic_readlink,
 	.follow_link		= xfs_vn_follow_link,
 	.put_link		= xfs_vn_put_link,
diff --git a/fs/xfs/linux-2.6/xfs_iops.h b/fs/xfs/linux-2.6/xfs_iops.h
index ad6173d..95a6939 100644
--- a/fs/xfs/linux-2.6/xfs_iops.h
+++ b/fs/xfs/linux-2.6/xfs_iops.h
@@ -18,9 +18,9 @@
 #ifndef __XFS_IOPS_H__
 #define __XFS_IOPS_H__
 
-extern struct inode_operations xfs_inode_operations;
-extern struct inode_operations xfs_dir_inode_operations;
-extern struct inode_operations xfs_symlink_inode_operations;
+extern const struct inode_operations xfs_inode_operations;
+extern const struct inode_operations xfs_dir_inode_operations;
+extern const struct inode_operations xfs_symlink_inode_operations;
 
 extern const struct file_operations xfs_file_operations;
 extern const struct file_operations xfs_dir_file_operations;
diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h
index 2b0e001..715adad 100644
--- a/fs/xfs/linux-2.6/xfs_linux.h
+++ b/fs/xfs/linux-2.6/xfs_linux.h
@@ -109,16 +109,6 @@
 #undef  HAVE_PERCPU_SB	/* per cpu superblock counters are a 2.6 feature */
 #endif
 
-/*
- * State flag for unwritten extent buffers.
- *
- * We need to be able to distinguish between these and delayed
- * allocate buffers within XFS.  The generic IO path code does
- * not need to distinguish - we use the BH_Delay flag for both
- * delalloc and these ondisk-uninitialised buffers.
- */
-BUFFER_FNS(PrivateStart, unwritten);
-
 #define restricted_chown	xfs_params.restrict_chown.val
 #define irix_sgid_inherit	xfs_params.sgid_inherit.val
 #define irix_symlink_mode	xfs_params.symlink_mode.val
diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
index 65e79b4..ff8d64e 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.c
+++ b/fs/xfs/linux-2.6/xfs_lrw.c
@@ -43,8 +43,6 @@
 #include "xfs_itable.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_inode_item.h"
 #include "xfs_buf_item.h"
@@ -134,13 +132,11 @@ STATIC int
 xfs_iozero(
 	struct inode		*ip,	/* inode			*/
 	loff_t			pos,	/* offset in file		*/
-	size_t			count,	/* size of data to zero		*/
-	loff_t			end_size)	/* max file size to set */
+	size_t			count)	/* size of data to zero		*/
 {
 	unsigned		bytes;
 	struct page		*page;
 	struct address_space	*mapping;
-	char			*kaddr;
 	int			status;
 
 	mapping = ip->i_mapping;
@@ -158,26 +154,21 @@ xfs_iozero(
 		if (!page)
 			break;
 
-		kaddr = kmap(page);
 		status = mapping->a_ops->prepare_write(NULL, page, offset,
 							offset + bytes);
-		if (status) {
+		if (status)
 			goto unlock;
-		}
 
-		memset((void *) (kaddr + offset), 0, bytes);
-		flush_dcache_page(page);
+		memclear_highpage_flush(page, offset, bytes);
+
 		status = mapping->a_ops->commit_write(NULL, page, offset,
 							offset + bytes);
 		if (!status) {
 			pos += bytes;
 			count -= bytes;
-			if (pos > i_size_read(ip))
-				i_size_write(ip, pos < end_size ? pos : end_size);
 		}
 
 unlock:
-		kunmap(page);
 		unlock_page(page);
 		page_cache_release(page);
 		if (status)
@@ -449,8 +440,8 @@ STATIC int				/* error (positive) */
 xfs_zero_last_block(
 	struct inode	*ip,
 	xfs_iocore_t	*io,
-	xfs_fsize_t	isize,
-	xfs_fsize_t	end_size)
+	xfs_fsize_t	offset,
+	xfs_fsize_t	isize)
 {
 	xfs_fileoff_t	last_fsb;
 	xfs_mount_t	*mp = io->io_mount;
@@ -459,7 +450,6 @@ xfs_zero_last_block(
 	int		zero_len;
 	int		error = 0;
 	xfs_bmbt_irec_t	imap;
-	loff_t		loff;
 
 	ASSERT(ismrlocked(io->io_lock, MR_UPDATE) != 0);
 
@@ -494,9 +484,10 @@ xfs_zero_last_block(
 	 */
 	XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL| XFS_EXTSIZE_RD);
 
-	loff = XFS_FSB_TO_B(mp, last_fsb);
 	zero_len = mp->m_sb.sb_blocksize - zero_offset;
-	error = xfs_iozero(ip, loff + zero_offset, zero_len, end_size);
+	if (isize + zero_len > offset)
+		zero_len = offset - isize;
+	error = xfs_iozero(ip, isize, zero_len);
 
 	XFS_ILOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
 	ASSERT(error >= 0);
@@ -519,14 +510,15 @@ xfs_zero_eof(
 	bhv_vnode_t	*vp,
 	xfs_iocore_t	*io,
 	xfs_off_t	offset,		/* starting I/O offset */
-	xfs_fsize_t	isize,		/* current inode size */
-	xfs_fsize_t	end_size)	/* terminal inode size */
+	xfs_fsize_t	isize)		/* current inode size */
 {
 	struct inode	*ip = vn_to_inode(vp);
 	xfs_fileoff_t	start_zero_fsb;
 	xfs_fileoff_t	end_zero_fsb;
 	xfs_fileoff_t	zero_count_fsb;
 	xfs_fileoff_t	last_fsb;
+	xfs_fileoff_t	zero_off;
+	xfs_fsize_t	zero_len;
 	xfs_mount_t	*mp = io->io_mount;
 	int		nimaps;
 	int		error = 0;
@@ -540,7 +532,7 @@ xfs_zero_eof(
 	 * First handle zeroing the block on which isize resides.
 	 * We only zero a part of that block so it is handled specially.
 	 */
-	error = xfs_zero_last_block(ip, io, isize, end_size);
+	error = xfs_zero_last_block(ip, io, offset, isize);
 	if (error) {
 		ASSERT(ismrlocked(io->io_lock, MR_UPDATE));
 		ASSERT(ismrlocked(io->io_iolock, MR_UPDATE));
@@ -601,10 +593,13 @@ xfs_zero_eof(
 		 */
 		XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
 
-		error = xfs_iozero(ip,
-				   XFS_FSB_TO_B(mp, start_zero_fsb),
-				   XFS_FSB_TO_B(mp, imap.br_blockcount),
-				   end_size);
+		zero_off = XFS_FSB_TO_B(mp, start_zero_fsb);
+		zero_len = XFS_FSB_TO_B(mp, imap.br_blockcount);
+
+		if ((zero_off + zero_len) > offset)
+			zero_len = offset - zero_off;
+
+		error = xfs_iozero(ip, zero_off, zero_len);
 		if (error) {
 			goto out_lock;
 		}
@@ -783,8 +778,7 @@ start:
 	 */
 
 	if (pos > isize) {
-		error = xfs_zero_eof(BHV_TO_VNODE(bdp), io, pos,
-					isize, pos + count);
+		error = xfs_zero_eof(BHV_TO_VNODE(bdp), io, pos, isize);
 		if (error) {
 			xfs_iunlock(xip, XFS_ILOCK_EXCL|iolock);
 			goto out_unlock_mutex;
diff --git a/fs/xfs/linux-2.6/xfs_lrw.h b/fs/xfs/linux-2.6/xfs_lrw.h
index c77e62e..7ac51b1 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.h
+++ b/fs/xfs/linux-2.6/xfs_lrw.h
@@ -83,7 +83,7 @@ extern int xfs_bdstrat_cb(struct xfs_buf *);
 extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
 
 extern int xfs_zero_eof(struct bhv_vnode *, struct xfs_iocore *, xfs_off_t,
-				xfs_fsize_t, xfs_fsize_t);
+				xfs_fsize_t);
 extern ssize_t xfs_read(struct bhv_desc *, struct kiocb *,
 				const struct iovec *, unsigned int,
 				loff_t *, int, struct cred *);
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index b93265b..1a4103c 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -43,8 +43,6 @@
 #include "xfs_itable.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_buf_item.h"
 #include "xfs_utils.h"
@@ -58,10 +56,10 @@
 #include <linux/kthread.h>
 #include <linux/freezer.h>
 
-STATIC struct quotactl_ops xfs_quotactl_operations;
-STATIC struct super_operations xfs_super_operations;
-STATIC kmem_zone_t *xfs_vnode_zone;
-STATIC kmem_zone_t *xfs_ioend_zone;
+static struct quotactl_ops xfs_quotactl_operations;
+static struct super_operations xfs_super_operations;
+static kmem_zone_t *xfs_vnode_zone;
+static kmem_zone_t *xfs_ioend_zone;
 mempool_t *xfs_ioend_pool;
 
 STATIC struct xfs_mount_args *
@@ -121,7 +119,7 @@ xfs_max_file_offset(
 	return (((__uint64_t)pagefactor) << bitshift) - 1;
 }
 
-STATIC __inline__ void
+STATIC_INLINE void
 xfs_set_inodeops(
 	struct inode		*inode)
 {
@@ -147,7 +145,7 @@ xfs_set_inodeops(
 	}
 }
 
-STATIC __inline__ void
+STATIC_INLINE void
 xfs_revalidate_inode(
 	xfs_mount_t		*mp,
 	bhv_vnode_t		*vp,
@@ -553,7 +551,6 @@ vfs_sync_worker(
 		error = bhv_vfs_sync(vfsp, SYNC_FSDATA | SYNC_BDFLUSH | \
 					SYNC_ATTR | SYNC_REFCACHE, NULL);
 	vfsp->vfs_sync_seq++;
-	wmb();
 	wake_up(&vfsp->vfs_wait_single_sync_task);
 }
 
@@ -659,9 +656,17 @@ xfs_fs_sync_super(
 	int			error;
 	int			flags;
 
-	if (unlikely(sb->s_frozen == SB_FREEZE_WRITE))
-		flags = SYNC_QUIESCE;
-	else
+	if (unlikely(sb->s_frozen == SB_FREEZE_WRITE)) {
+		/*
+		 * First stage of freeze - no more writers will make progress
+		 * now we are here, so we flush delwri and delalloc buffers
+		 * here, then wait for all I/O to complete.  Data is frozen at
+		 * that point. Metadata is not frozen, transactions can still
+		 * occur here so don't bother flushing the buftarg (i.e
+		 * SYNC_QUIESCE) because it'll just get dirty again.
+		 */
+		flags = SYNC_FSDATA | SYNC_DELWRI | SYNC_WAIT | SYNC_IOWAIT;
+	} else
 		flags = SYNC_FSDATA | (wait ? SYNC_WAIT : 0);
 
 	error = bhv_vfs_sync(vfsp, flags, NULL);
@@ -873,7 +878,7 @@ xfs_fs_get_sb(
 			   mnt);
 }
 
-STATIC struct super_operations xfs_super_operations = {
+static struct super_operations xfs_super_operations = {
 	.alloc_inode		= xfs_fs_alloc_inode,
 	.destroy_inode		= xfs_fs_destroy_inode,
 	.write_inode		= xfs_fs_write_inode,
@@ -887,7 +892,7 @@ STATIC struct super_operations xfs_super_operations = {
 	.show_options		= xfs_fs_show_options,
 };
 
-STATIC struct quotactl_ops xfs_quotactl_operations = {
+static struct quotactl_ops xfs_quotactl_operations = {
 	.quota_sync		= xfs_fs_quotasync,
 	.get_xstate		= xfs_fs_getxstate,
 	.set_xstate		= xfs_fs_setxstate,
diff --git a/fs/xfs/linux-2.6/xfs_sysctl.c b/fs/xfs/linux-2.6/xfs_sysctl.c
index af24653..5c46c35 100644
--- a/fs/xfs/linux-2.6/xfs_sysctl.c
+++ b/fs/xfs/linux-2.6/xfs_sysctl.c
@@ -54,102 +54,204 @@ xfs_stats_clear_proc_handler(
 }
 #endif /* CONFIG_PROC_FS */
 
-STATIC ctl_table xfs_table[] = {
-	{XFS_RESTRICT_CHOWN, "restrict_chown", &xfs_params.restrict_chown.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.restrict_chown.min, &xfs_params.restrict_chown.max},
-
-	{XFS_SGID_INHERIT, "irix_sgid_inherit", &xfs_params.sgid_inherit.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.sgid_inherit.min, &xfs_params.sgid_inherit.max},
-
-	{XFS_SYMLINK_MODE, "irix_symlink_mode", &xfs_params.symlink_mode.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.symlink_mode.min, &xfs_params.symlink_mode.max},
-
-	{XFS_PANIC_MASK, "panic_mask", &xfs_params.panic_mask.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.panic_mask.min, &xfs_params.panic_mask.max},
-
-	{XFS_ERRLEVEL, "error_level", &xfs_params.error_level.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.error_level.min, &xfs_params.error_level.max},
-
-	{XFS_SYNCD_TIMER, "xfssyncd_centisecs", &xfs_params.syncd_timer.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.syncd_timer.min, &xfs_params.syncd_timer.max},
-
-	{XFS_INHERIT_SYNC, "inherit_sync", &xfs_params.inherit_sync.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.inherit_sync.min, &xfs_params.inherit_sync.max},
-
-	{XFS_INHERIT_NODUMP, "inherit_nodump", &xfs_params.inherit_nodump.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.inherit_nodump.min, &xfs_params.inherit_nodump.max},
-
-	{XFS_INHERIT_NOATIME, "inherit_noatime", &xfs_params.inherit_noatim.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.inherit_noatim.min, &xfs_params.inherit_noatim.max},
-
-	{XFS_BUF_TIMER, "xfsbufd_centisecs", &xfs_params.xfs_buf_timer.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.xfs_buf_timer.min, &xfs_params.xfs_buf_timer.max},
-
-	{XFS_BUF_AGE, "age_buffer_centisecs", &xfs_params.xfs_buf_age.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.xfs_buf_age.min, &xfs_params.xfs_buf_age.max},
-
-	{XFS_INHERIT_NOSYM, "inherit_nosymlinks", &xfs_params.inherit_nosym.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.inherit_nosym.min, &xfs_params.inherit_nosym.max},
-
-	{XFS_ROTORSTEP, "rotorstep", &xfs_params.rotorstep.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.rotorstep.min, &xfs_params.rotorstep.max},
-
-	{XFS_INHERIT_NODFRG, "inherit_nodefrag", &xfs_params.inherit_nodfrg.val,
-	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
-	&sysctl_intvec, NULL,
-	&xfs_params.inherit_nodfrg.min, &xfs_params.inherit_nodfrg.max},
+static ctl_table xfs_table[] = {
+	{
+		.ctl_name	= XFS_RESTRICT_CHOWN,
+		.procname	= "restrict_chown",
+		.data		= &xfs_params.restrict_chown.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.restrict_chown.min,
+		.extra2		= &xfs_params.restrict_chown.max
+	},
+	{
+		.ctl_name	= XFS_SGID_INHERIT,
+		.procname	= "irix_sgid_inherit",
+		.data		= &xfs_params.sgid_inherit.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.sgid_inherit.min,
+		.extra2		= &xfs_params.sgid_inherit.max
+	},
+	{
+		.ctl_name	= XFS_SYMLINK_MODE,
+		.procname	= "irix_symlink_mode",
+		.data		= &xfs_params.symlink_mode.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.symlink_mode.min,
+		.extra2		= &xfs_params.symlink_mode.max
+	},
+	{
+		.ctl_name	= XFS_PANIC_MASK,
+		.procname	= "panic_mask",
+		.data		= &xfs_params.panic_mask.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.panic_mask.min,
+		.extra2		= &xfs_params.panic_mask.max
+	},
 
+	{
+		.ctl_name	= XFS_ERRLEVEL,
+		.procname	= "error_level",
+		.data		= &xfs_params.error_level.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.error_level.min,
+		.extra2		= &xfs_params.error_level.max
+	},
+	{
+		.ctl_name	= XFS_SYNCD_TIMER,
+		.procname	= "xfssyncd_centisecs",
+		.data		= &xfs_params.syncd_timer.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.syncd_timer.min,
+		.extra2		= &xfs_params.syncd_timer.max
+	},
+	{
+		.ctl_name	= XFS_INHERIT_SYNC,
+		.procname	= "inherit_sync",
+		.data		= &xfs_params.inherit_sync.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.inherit_sync.min,
+		.extra2		= &xfs_params.inherit_sync.max
+	},
+	{
+		.ctl_name	= XFS_INHERIT_NODUMP,
+		.procname	= "inherit_nodump",
+		.data		= &xfs_params.inherit_nodump.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.inherit_nodump.min,
+		.extra2		= &xfs_params.inherit_nodump.max
+	},
+	{
+		.ctl_name	= XFS_INHERIT_NOATIME,
+		.procname	= "inherit_noatime",
+		.data		= &xfs_params.inherit_noatim.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.inherit_noatim.min,
+		.extra2		= &xfs_params.inherit_noatim.max
+	},
+	{
+		.ctl_name	= XFS_BUF_TIMER,
+		.procname	= "xfsbufd_centisecs",
+		.data		= &xfs_params.xfs_buf_timer.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.xfs_buf_timer.min,
+		.extra2		= &xfs_params.xfs_buf_timer.max
+	},
+	{
+		.ctl_name	= XFS_BUF_AGE,
+		.procname	= "age_buffer_centisecs",
+		.data		= &xfs_params.xfs_buf_age.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.xfs_buf_age.min,
+		.extra2		= &xfs_params.xfs_buf_age.max
+	},
+	{
+		.ctl_name	= XFS_INHERIT_NOSYM,
+		.procname	= "inherit_nosymlinks",
+		.data		= &xfs_params.inherit_nosym.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.inherit_nosym.min,
+		.extra2		= &xfs_params.inherit_nosym.max
+	},
+	{
+		.ctl_name	= XFS_ROTORSTEP,
+		.procname	= "rotorstep",
+		.data		= &xfs_params.rotorstep.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.rotorstep.min,
+		.extra2		= &xfs_params.rotorstep.max
+	},
+	{
+		.ctl_name	= XFS_INHERIT_NODFRG,
+		.procname	= "inherit_nodefrag",
+		.data		= &xfs_params.inherit_nodfrg.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.inherit_nodfrg.min,
+		.extra2		= &xfs_params.inherit_nodfrg.max
+	},
 	/* please keep this the last entry */
 #ifdef CONFIG_PROC_FS
-	{XFS_STATS_CLEAR, "stats_clear", &xfs_params.stats_clear.val,
-	sizeof(int), 0644, NULL, &xfs_stats_clear_proc_handler,
-	&sysctl_intvec, NULL,
-	&xfs_params.stats_clear.min, &xfs_params.stats_clear.max},
+	{
+		.ctl_name	= XFS_STATS_CLEAR,
+		.procname	= "stats_clear",
+		.data		= &xfs_params.stats_clear.val,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &xfs_stats_clear_proc_handler,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &xfs_params.stats_clear.min,
+		.extra2		= &xfs_params.stats_clear.max
+	},
 #endif /* CONFIG_PROC_FS */
 
-	{0}
+	{}
 };
 
-STATIC ctl_table xfs_dir_table[] = {
-	{FS_XFS, "xfs", NULL, 0, 0555, xfs_table},
-	{0}
+static ctl_table xfs_dir_table[] = {
+	{
+		.ctl_name	= FS_XFS,
+		.procname	= "xfs",
+		.mode		= 0555,
+		.child		= xfs_table
+	},
+	{}
 };
 
-STATIC ctl_table xfs_root_table[] = {
-	{CTL_FS, "fs",  NULL, 0, 0555, xfs_dir_table},
-	{0}
+static ctl_table xfs_root_table[] = {
+	{
+		.ctl_name	= CTL_FS,
+		.procname	= "fs",
+		.mode		= 0555,
+		.child		= xfs_dir_table
+	},
+	{}
 };
 
 void
 xfs_sysctl_register(void)
 {
-	xfs_table_header = register_sysctl_table(xfs_root_table, 1);
+	xfs_table_header = register_sysctl_table(xfs_root_table, 0);
 }
 
 void
diff --git a/fs/xfs/linux-2.6/xfs_vfs.h b/fs/xfs/linux-2.6/xfs_vfs.h
index da255bd..e2c2ce9 100644
--- a/fs/xfs/linux-2.6/xfs_vfs.h
+++ b/fs/xfs/linux-2.6/xfs_vfs.h
@@ -91,7 +91,7 @@ typedef enum {
 #define SYNC_FSDATA		0x0020	/* flush fs data (e.g. superblocks) */
 #define SYNC_REFCACHE		0x0040  /* prune some of the nfs ref cache */
 #define SYNC_REMOUNT		0x0080  /* remount readonly, no dummy LRs */
-#define SYNC_QUIESCE		0x0100  /* quiesce fileystem for a snapshot */
+#define SYNC_IOWAIT		0x0100  /* wait for all I/O to complete */
 
 #define SHUTDOWN_META_IO_ERROR	0x0001	/* write attempt to metadata failed */
 #define SHUTDOWN_LOG_IO_ERROR	0x0002	/* write attempt to the log failed */
diff --git a/fs/xfs/linux-2.6/xfs_vnode.c b/fs/xfs/linux-2.6/xfs_vnode.c
index 553fa73..ada24ba 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.c
+++ b/fs/xfs/linux-2.6/xfs_vnode.c
@@ -26,7 +26,7 @@ DEFINE_SPINLOCK(vnumber_lock);
  */
 #define NVSYNC                  37
 #define vptosync(v)             (&vsync[((unsigned long)v) % NVSYNC])
-STATIC wait_queue_head_t vsync[NVSYNC];
+static wait_queue_head_t vsync[NVSYNC];
 
 void
 vn_init(void)
diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/linux-2.6/xfs_vnode.h
index 515f5fd..b76118c 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.h
+++ b/fs/xfs/linux-2.6/xfs_vnode.h
@@ -489,14 +489,14 @@ static inline struct bhv_vnode *vn_grab(struct bhv_vnode *vp)
 #define VN_LOCK(vp)		mutex_spinlock(&(vp)->v_lock)
 #define VN_UNLOCK(vp, s)	mutex_spinunlock(&(vp)->v_lock, s)
 
-static __inline__ void vn_flagset(struct bhv_vnode *vp, uint flag)
+STATIC_INLINE void vn_flagset(struct bhv_vnode *vp, uint flag)
 {
 	spin_lock(&vp->v_lock);
 	vp->v_flag |= flag;
 	spin_unlock(&vp->v_lock);
 }
 
-static __inline__ uint vn_flagclr(struct bhv_vnode *vp, uint flag)
+STATIC_INLINE uint vn_flagclr(struct bhv_vnode *vp, uint flag)
 {
 	uint	cleared;
 
diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c
index 3aa7715..4adaf13 100644
--- a/fs/xfs/quota/xfs_dquot.c
+++ b/fs/xfs/quota/xfs_dquot.c
@@ -43,8 +43,6 @@
 #include "xfs_itable.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_buf_item.h"
 #include "xfs_trans_space.h"
@@ -484,7 +482,7 @@ xfs_qm_dqalloc(
 
 	xfs_trans_bhold(tp, bp);
 
-	if ((error = xfs_bmap_finish(tpp, &flist, firstblock, &committed))) {
+	if ((error = xfs_bmap_finish(tpp, &flist, &committed))) {
 		goto error1;
 	}
 
diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/quota/xfs_dquot_item.c
index 33ad5af..ddb61fe 100644
--- a/fs/xfs/quota/xfs_dquot_item.c
+++ b/fs/xfs/quota/xfs_dquot_item.c
@@ -43,8 +43,6 @@
 #include "xfs_itable.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_buf_item.h"
 #include "xfs_trans_priv.h"
@@ -399,7 +397,7 @@ xfs_qm_dquot_logitem_committing(
 /*
  * This is the ops vector for dquots
  */
-STATIC struct xfs_item_ops xfs_dquot_item_ops = {
+static struct xfs_item_ops xfs_dquot_item_ops = {
 	.iop_size	= (uint(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_size,
 	.iop_format	= (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 					xfs_qm_dquot_logitem_format,
@@ -606,7 +604,7 @@ xfs_qm_qoffend_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn)
 	return;
 }
 
-STATIC struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
+static struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
 	.iop_size	= (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size,
 	.iop_format	= (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 					xfs_qm_qoff_logitem_format,
@@ -628,7 +626,7 @@ STATIC struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
 /*
  * This is the ops vector shared by all quotaoff-start log items.
  */
-STATIC struct xfs_item_ops xfs_qm_qoff_logitem_ops = {
+static struct xfs_item_ops xfs_qm_qoff_logitem_ops = {
 	.iop_size	= (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size,
 	.iop_format	= (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 					xfs_qm_qoff_logitem_format,
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c
index 7c6a3a5..1de2acd 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/quota/xfs_qm.c
@@ -44,8 +44,6 @@
 #include "xfs_bmap.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_buf_item.h"
 #include "xfs_trans_space.h"
@@ -64,10 +62,10 @@ uint		ndquot;
 
 kmem_zone_t	*qm_dqzone;
 kmem_zone_t	*qm_dqtrxzone;
-STATIC kmem_shaker_t	xfs_qm_shaker;
+static kmem_shaker_t	xfs_qm_shaker;
 
-STATIC cred_t	xfs_zerocr;
-STATIC xfs_inode_t	xfs_zeroino;
+static cred_t	xfs_zerocr;
+static xfs_inode_t	xfs_zeroino;
 
 STATIC void	xfs_qm_list_init(xfs_dqlist_t *, char *, int);
 STATIC void	xfs_qm_list_destroy(xfs_dqlist_t *);
diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c
index db8872b..d2cdb8a 100644
--- a/fs/xfs/quota/xfs_qm_bhv.c
+++ b/fs/xfs/quota/xfs_qm_bhv.c
@@ -44,8 +44,6 @@
 #include "xfs_error.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_buf_item.h"
 #include "xfs_qm.h"
@@ -384,7 +382,7 @@ xfs_qm_dqrele_null(
 }
 
 
-STATIC struct xfs_qmops xfs_qmcore_xfs = {
+static struct xfs_qmops xfs_qmcore_xfs = {
 	.xfs_qminit		= xfs_qm_newmount,
 	.xfs_qmdone		= xfs_qm_unmount_quotadestroy,
 	.xfs_qmmount		= xfs_qm_endmount,
diff --git a/fs/xfs/quota/xfs_qm_stats.c b/fs/xfs/quota/xfs_qm_stats.c
index 6f858fb..709f5f5 100644
--- a/fs/xfs/quota/xfs_qm_stats.c
+++ b/fs/xfs/quota/xfs_qm_stats.c
@@ -43,8 +43,6 @@
 #include "xfs_error.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_buf_item.h"
 #include "xfs_qm.h"
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c
index ed620c4..716f562 100644
--- a/fs/xfs/quota/xfs_qm_syscalls.c
+++ b/fs/xfs/quota/xfs_qm_syscalls.c
@@ -46,8 +46,6 @@
 #include "xfs_error.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_buf_item.h"
 #include "xfs_utils.h"
@@ -134,7 +132,7 @@ xfs_qm_quotactl(
 		break;
 
 	case Q_XQUOTASYNC:
-		return (xfs_sync_inodes(mp, SYNC_DELWRI, 0, NULL));
+		return (xfs_sync_inodes(mp, SYNC_DELWRI, NULL));
 
 	default:
 		break;
diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/quota/xfs_trans_dquot.c
index 0242e96..d7491e7 100644
--- a/fs/xfs/quota/xfs_trans_dquot.c
+++ b/fs/xfs/quota/xfs_trans_dquot.c
@@ -43,8 +43,6 @@
 #include "xfs_error.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_buf_item.h"
 #include "xfs_trans_priv.h"
diff --git a/fs/xfs/support/debug.c b/fs/xfs/support/debug.c
index 4363512..08bbd3c 100644
--- a/fs/xfs/support/debug.c
+++ b/fs/xfs/support/debug.c
@@ -19,7 +19,7 @@
 #include "debug.h"
 #include "spin.h"
 
-static char		message[256];	/* keep it off the stack */
+static char		message[1024];	/* keep it off the stack */
 static DEFINE_SPINLOCK(xfs_err_lock);
 
 /* Translate from CE_FOO to KERN_FOO, err_level(CE_FOO) == KERN_FOO */
@@ -44,13 +44,14 @@ cmn_err(register int level, char *fmt, ...)
 	spin_lock_irqsave(&xfs_err_lock,flags);
 	va_start(ap, fmt);
 	if (*fmt == '!') fp++;
-	len = vsprintf(message, fp, ap);
-	if (level != CE_DEBUG && message[len-1] != '\n')
-		strcat(message, "\n");
-	printk("%s%s", err_level[level], message);
+	len = vsnprintf(message, sizeof(message), fp, ap);
+	if (len >= sizeof(message))
+		len = sizeof(message) - 1;
+	if (message[len-1] == '\n')
+		message[len-1] = 0;
+	printk("%s%s\n", err_level[level], message);
 	va_end(ap);
 	spin_unlock_irqrestore(&xfs_err_lock,flags);
-
 	BUG_ON(level == CE_PANIC);
 }
 
@@ -64,11 +65,13 @@ icmn_err(register int level, char *fmt, va_list ap)
 	if(level > XFS_MAX_ERR_LEVEL)
 		level = XFS_MAX_ERR_LEVEL;
 	spin_lock_irqsave(&xfs_err_lock,flags);
-	len = vsprintf(message, fmt, ap);
-	if (level != CE_DEBUG && message[len-1] != '\n')
-		strcat(message, "\n");
+	len = vsnprintf(message, sizeof(message), fmt, ap);
+	if (len >= sizeof(message))
+		len = sizeof(message) - 1;
+	if (message[len-1] == '\n')
+		message[len-1] = 0;
+	printk("%s%s\n", err_level[level], message);
 	spin_unlock_irqrestore(&xfs_err_lock,flags);
-	printk("%s%s", err_level[level], message);
 	BUG_ON(level == CE_PANIC);
 }
 
diff --git a/fs/xfs/support/debug.h b/fs/xfs/support/debug.h
index 4f54dca..2a70cc6 100644
--- a/fs/xfs/support/debug.h
+++ b/fs/xfs/support/debug.h
@@ -38,13 +38,37 @@ extern void assfail(char *expr, char *f, int l);
 
 #ifndef DEBUG
 # define ASSERT(expr)	((void)0)
-#else
+
+#ifndef STATIC
+# define STATIC static noinline
+#endif
+
+#ifndef STATIC_INLINE
+# define STATIC_INLINE static inline
+#endif
+
+#else /* DEBUG */
+
 # define ASSERT(expr)	ASSERT_ALWAYS(expr)
 extern unsigned long random(void);
-#endif
 
 #ifndef STATIC
-# define STATIC static
+# define STATIC noinline
 #endif
 
+/*
+ * We stop inlining of inline functions in debug mode.
+ * Unfortunately, this means static inline in header files
+ * get multiple definitions, so they need to remain static.
+ * This then gives tonnes of warnings about unused but defined
+ * functions, so we need to add the unused attribute to prevent
+ * these spurious warnings.
+ */
+#ifndef STATIC_INLINE
+# define STATIC_INLINE static __attribute__ ((unused)) noinline
+#endif
+
+#endif /* DEBUG */
+
+
 #endif  /* __XFS_SUPPORT_DEBUG_H__ */
diff --git a/fs/xfs/support/move.h b/fs/xfs/support/move.h
index 977879c..324e413 100644
--- a/fs/xfs/support/move.h
+++ b/fs/xfs/support/move.h
@@ -55,7 +55,7 @@ enum uio_seg {
 };
 
 struct uio {
-	struct iovec	*uio_iov;   /* pointer to array of iovecs */
+	struct kvec	*uio_iov;   /* pointer to array of iovecs */
 	int		uio_iovcnt; /* number of iovecs in array */
 	xfs_off_t	uio_offset; /* offset in file this uio corresponds to */
 	int		uio_resid;  /* residual i/o count */
@@ -63,7 +63,7 @@ struct uio {
 };
 
 typedef struct uio uio_t;
-typedef struct iovec iovec_t;
+typedef struct kvec iovec_t;
 
 extern int	xfs_uio_read (caddr_t, size_t, uio_t *);
 
diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c
index 4b0cb47..4ca4beb 100644
--- a/fs/xfs/xfs_acl.c
+++ b/fs/xfs/xfs_acl.c
@@ -31,7 +31,6 @@
 #include "xfs_inode.h"
 #include "xfs_btree.h"
 #include "xfs_acl.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 
 #include <linux/capability.h>
diff --git a/fs/xfs/xfs_alloc_btree.h b/fs/xfs/xfs_alloc_btree.h
index bce81c7..5bd1a2c 100644
--- a/fs/xfs/xfs_alloc_btree.h
+++ b/fs/xfs/xfs_alloc_btree.h
@@ -58,7 +58,6 @@ typedef	struct xfs_btree_sblock xfs_alloc_block_t;
 /*
  * Real block structures have a size equal to the disk block size.
  */
-#define	XFS_ALLOC_BLOCK_SIZE(lev,cur)	(1 << (cur)->bc_blocklog)
 #define	XFS_ALLOC_BLOCK_MAXRECS(lev,cur) ((cur)->bc_mp->m_alloc_mxr[lev != 0])
 #define	XFS_ALLOC_BLOCK_MINRECS(lev,cur) ((cur)->bc_mp->m_alloc_mnr[lev != 0])
 
@@ -87,16 +86,13 @@ typedef	struct xfs_btree_sblock xfs_alloc_block_t;
  * Record, key, and pointer address macros for btree blocks.
  */
 #define	XFS_ALLOC_REC_ADDR(bb,i,cur)	\
-	XFS_BTREE_REC_ADDR(XFS_ALLOC_BLOCK_SIZE(0,cur), xfs_alloc, \
-				bb, i, XFS_ALLOC_BLOCK_MAXRECS(0, cur))
+	XFS_BTREE_REC_ADDR(xfs_alloc, bb, i)
 
 #define	XFS_ALLOC_KEY_ADDR(bb,i,cur)	\
-	XFS_BTREE_KEY_ADDR(XFS_ALLOC_BLOCK_SIZE(1,cur), xfs_alloc, \
-				bb, i, XFS_ALLOC_BLOCK_MAXRECS(1, cur))
+	XFS_BTREE_KEY_ADDR(xfs_alloc, bb, i)
 
 #define	XFS_ALLOC_PTR_ADDR(bb,i,cur)	\
-	XFS_BTREE_PTR_ADDR(XFS_ALLOC_BLOCK_SIZE(1,cur), xfs_alloc, \
-				bb, i, XFS_ALLOC_BLOCK_MAXRECS(1, cur))
+	XFS_BTREE_PTR_ADDR(xfs_alloc, bb, i, XFS_ALLOC_BLOCK_MAXRECS(1, cur))
 
 /*
  * Decrement cursor by one record at the level.
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index 9ada7bd..9d358ff 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -57,9 +57,9 @@
  */
 
 #define ATTR_SYSCOUNT	2
-STATIC struct attrnames posix_acl_access;
-STATIC struct attrnames posix_acl_default;
-STATIC struct attrnames *attr_system_names[ATTR_SYSCOUNT];
+static struct attrnames posix_acl_access;
+static struct attrnames posix_acl_default;
+static struct attrnames *attr_system_names[ATTR_SYSCOUNT];
 
 /*========================================================================
  * Function prototypes for the kernel.
@@ -199,18 +199,14 @@ xfs_attr_set_int(xfs_inode_t *dp, const char *name, int namelen,
 		return (error);
 
 	/*
-	 * Determine space new attribute will use, and if it would be
-	 * "local" or "remote" (note: local != inline).
-	 */
-	size = xfs_attr_leaf_newentsize(namelen, valuelen,
-					mp->m_sb.sb_blocksize, &local);
-
-	/*
 	 * If the inode doesn't have an attribute fork, add one.
 	 * (inode must not be locked when we call this routine)
 	 */
 	if (XFS_IFORK_Q(dp) == 0) {
-		if ((error = xfs_bmap_add_attrfork(dp, size, rsvd)))
+		int sf_size = sizeof(xfs_attr_sf_hdr_t) +
+			      XFS_ATTR_SF_ENTSIZE_BYNAME(namelen, valuelen);
+
+		if ((error = xfs_bmap_add_attrfork(dp, sf_size, rsvd)))
 			return(error);
 	}
 
@@ -231,6 +227,13 @@ xfs_attr_set_int(xfs_inode_t *dp, const char *name, int namelen,
 	args.addname = 1;
 	args.oknoent = 1;
 
+	/*
+	 * Determine space new attribute will use, and if it would be
+	 * "local" or "remote" (note: local != inline).
+	 */
+	size = xfs_attr_leaf_newentsize(namelen, valuelen,
+					mp->m_sb.sb_blocksize, &local);
+
 	nblks = XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK);
 	if (local) {
 		if (size > (mp->m_sb.sb_blocksize >> 1)) {
@@ -346,7 +349,7 @@ xfs_attr_set_int(xfs_inode_t *dp, const char *name, int namelen,
 		error = xfs_attr_shortform_to_leaf(&args);
 		if (!error) {
 			error = xfs_bmap_finish(&args.trans, args.flist,
-						*args.firstblock, &committed);
+						&committed);
 		}
 		if (error) {
 			ASSERT(committed);
@@ -973,7 +976,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
 		error = xfs_attr_leaf_to_node(args);
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
-						*args->firstblock, &committed);
+						&committed);
 		}
 		if (error) {
 			ASSERT(committed);
@@ -1074,7 +1077,6 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
 			if (!error) {
 				error = xfs_bmap_finish(&args->trans,
 							args->flist,
-							*args->firstblock,
 							&committed);
 			}
 			if (error) {
@@ -1152,7 +1154,7 @@ xfs_attr_leaf_removename(xfs_da_args_t *args)
 		/* bp is gone due to xfs_da_shrink_inode */
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
-						*args->firstblock, &committed);
+						&committed);
 		}
 		if (error) {
 			ASSERT(committed);
@@ -1307,7 +1309,6 @@ restart:
 			if (!error) {
 				error = xfs_bmap_finish(&args->trans,
 							args->flist,
-							*args->firstblock,
 							&committed);
 			}
 			if (error) {
@@ -1347,7 +1348,7 @@ restart:
 		error = xfs_da_split(state);
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
-						*args->firstblock, &committed);
+						&committed);
 		}
 		if (error) {
 			ASSERT(committed);
@@ -1459,7 +1460,6 @@ restart:
 			if (!error) {
 				error = xfs_bmap_finish(&args->trans,
 							args->flist,
-							*args->firstblock,
 							&committed);
 			}
 			if (error) {
@@ -1594,7 +1594,7 @@ xfs_attr_node_removename(xfs_da_args_t *args)
 		error = xfs_da_join(state);
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
-						*args->firstblock, &committed);
+						&committed);
 		}
 		if (error) {
 			ASSERT(committed);
@@ -1646,7 +1646,6 @@ xfs_attr_node_removename(xfs_da_args_t *args)
 			if (!error) {
 				error = xfs_bmap_finish(&args->trans,
 							args->flist,
-							*args->firstblock,
 							&committed);
 			}
 			if (error) {
@@ -2090,7 +2089,7 @@ xfs_attr_rmtval_set(xfs_da_args_t *args)
 				  args->flist, NULL);
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
-						*args->firstblock, &committed);
+						&committed);
 		}
 		if (error) {
 			ASSERT(committed);
@@ -2246,7 +2245,7 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args)
 				    NULL, &done);
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
-						*args->firstblock, &committed);
+						&committed);
 		}
 		if (error) {
 			ASSERT(committed);
@@ -2477,7 +2476,7 @@ posix_acl_default_exists(
 	return xfs_acl_vhasacl_default(vp);
 }
 
-STATIC struct attrnames posix_acl_access = {
+static struct attrnames posix_acl_access = {
 	.attr_name	= "posix_acl_access",
 	.attr_namelen	= sizeof("posix_acl_access") - 1,
 	.attr_get	= posix_acl_access_get,
@@ -2486,7 +2485,7 @@ STATIC struct attrnames posix_acl_access = {
 	.attr_exists	= posix_acl_access_exists,
 };
 
-STATIC struct attrnames posix_acl_default = {
+static struct attrnames posix_acl_default = {
 	.attr_name	= "posix_acl_default",
 	.attr_namelen	= sizeof("posix_acl_default") - 1,
 	.attr_get	= posix_acl_default_get,
@@ -2495,7 +2494,7 @@ STATIC struct attrnames posix_acl_default = {
 	.attr_exists	= posix_acl_default_exists,
 };
 
-STATIC struct attrnames *attr_system_names[] =
+static struct attrnames *attr_system_names[] =
 	{ &posix_acl_access, &posix_acl_default };
 
 
diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c
index 9719bbe..8eab73e 100644
--- a/fs/xfs/xfs_attr_leaf.c
+++ b/fs/xfs/xfs_attr_leaf.c
@@ -94,7 +94,7 @@ STATIC int xfs_attr_leaf_entsize(xfs_attr_leafblock_t *leaf, int index);
  * Namespace helper routines
  *========================================================================*/
 
-STATIC inline attrnames_t *
+STATIC_INLINE attrnames_t *
 xfs_attr_flags_namesp(int flags)
 {
 	return ((flags & XFS_ATTR_SECURE) ? &attr_secure:
@@ -105,7 +105,7 @@ xfs_attr_flags_namesp(int flags)
  * If namespace bits don't match return 0.
  * If all match then return 1.
  */
-STATIC inline int
+STATIC_INLINE int
 xfs_attr_namesp_match(int arg_flags, int ondisk_flags)
 {
 	return XFS_ATTR_NSP_ONDISK(ondisk_flags) == XFS_ATTR_NSP_ARGS_TO_ONDISK(arg_flags);
@@ -116,7 +116,7 @@ xfs_attr_namesp_match(int arg_flags, int ondisk_flags)
  * then return 0.
  * If all match or are overridable then return 1.
  */
-STATIC inline int
+STATIC_INLINE int
 xfs_attr_namesp_match_overrides(int arg_flags, int ondisk_flags)
 {
 	if (((arg_flags & ATTR_SECURE) == 0) !=
@@ -150,6 +150,7 @@ xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes)
 	int offset;
 	int minforkoff;	/* lower limit on valid forkoff locations */
 	int maxforkoff;	/* upper limit on valid forkoff locations */
+	int dsize;	
 	xfs_mount_t *mp = dp->i_mount;
 
 	offset = (XFS_LITINO(mp) - bytes) >> 3; /* rounded down */
@@ -169,8 +170,43 @@ xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes)
 		return 0;
 	}
 
-	/* data fork btree root can have at least this many key/ptr pairs */
-	minforkoff = MAX(dp->i_df.if_bytes, XFS_BMDR_SPACE_CALC(MINDBTPTRS));
+	dsize = dp->i_df.if_bytes;
+	
+	switch (dp->i_d.di_format) {
+	case XFS_DINODE_FMT_EXTENTS:
+		/* 
+		 * If there is no attr fork and the data fork is extents, 
+		 * determine if creating the default attr fork will result 
+		 * in the extents form migrating to btree. If so, the 
+		 * minimum offset only needs to be the space required for 
+		 * the btree root.
+		 */ 
+		if (!dp->i_d.di_forkoff && dp->i_df.if_bytes > mp->m_attroffset)
+			dsize = XFS_BMDR_SPACE_CALC(MINDBTPTRS);
+		break;
+		
+	case XFS_DINODE_FMT_BTREE:
+		/*
+		 * If have data btree then keep forkoff if we have one,
+		 * otherwise we are adding a new attr, so then we set 
+		 * minforkoff to where the btree root can finish so we have 
+		 * plenty of room for attrs
+		 */
+		if (dp->i_d.di_forkoff) {
+			if (offset < dp->i_d.di_forkoff) 
+				return 0;
+			else 
+				return dp->i_d.di_forkoff;
+		} else
+			dsize = XFS_BMAP_BROOT_SPACE(dp->i_df.if_broot);
+		break;
+	}
+	
+	/* 
+	 * A data fork btree root must have space for at least 
+	 * MINDBTPTRS key/ptr pairs if the data fork is small or empty.
+	 */
+	minforkoff = MAX(dsize, XFS_BMDR_SPACE_CALC(MINDBTPTRS));
 	minforkoff = roundup(minforkoff, 8) >> 3;
 
 	/* attr fork btree root can have at least this many key/ptr pairs */
@@ -336,7 +372,8 @@ xfs_attr_shortform_remove(xfs_da_args_t *args)
 	 */
 	totsize -= size;
 	if (totsize == sizeof(xfs_attr_sf_hdr_t) && !args->addname &&
-	    (mp->m_flags & XFS_MOUNT_ATTR2)) {
+	    (mp->m_flags & XFS_MOUNT_ATTR2) && 
+	    (dp->i_d.di_format != XFS_DINODE_FMT_BTREE)) {
 		/*
 		 * Last attribute now removed, revert to original
 		 * inode format making all literal area available
@@ -355,7 +392,8 @@ xfs_attr_shortform_remove(xfs_da_args_t *args)
 		dp->i_d.di_forkoff = xfs_attr_shortform_bytesfit(dp, totsize);
 		ASSERT(dp->i_d.di_forkoff);
 		ASSERT(totsize > sizeof(xfs_attr_sf_hdr_t) || args->addname ||
-			!(mp->m_flags & XFS_MOUNT_ATTR2));
+			!(mp->m_flags & XFS_MOUNT_ATTR2) ||
+			dp->i_d.di_format == XFS_DINODE_FMT_BTREE);
 		dp->i_afp->if_ext_max =
 			XFS_IFORK_ASIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
 		dp->i_df.if_ext_max =
@@ -748,6 +786,7 @@ xfs_attr_shortform_allfit(xfs_dabuf_t *bp, xfs_inode_t *dp)
 				+ be16_to_cpu(name_loc->valuelen);
 	}
 	if ((dp->i_mount->m_flags & XFS_MOUNT_ATTR2) &&
+	    (dp->i_d.di_format != XFS_DINODE_FMT_BTREE) &&
 	    (bytes == sizeof(struct xfs_attr_sf_hdr)))
 		return(-1);
 	return(xfs_attr_shortform_bytesfit(dp, bytes));
@@ -786,6 +825,7 @@ xfs_attr_leaf_to_shortform(xfs_dabuf_t *bp, xfs_da_args_t *args, int forkoff)
 
 	if (forkoff == -1) {
 		ASSERT(dp->i_mount->m_flags & XFS_MOUNT_ATTR2);
+		ASSERT(dp->i_d.di_format != XFS_DINODE_FMT_BTREE);
 
 		/*
 		 * Last attribute was removed, revert to original
diff --git a/fs/xfs/xfs_bit.c b/fs/xfs/xfs_bit.c
index 43be6a7..1afe07f 100644
--- a/fs/xfs/xfs_bit.c
+++ b/fs/xfs/xfs_bit.c
@@ -29,7 +29,7 @@
 /*
  * Index of high bit number in byte, -1 for none set, 0..7 otherwise.
  */
-STATIC const char xfs_highbit[256] = {
+static const char xfs_highbit[256] = {
        -1, 0, 1, 1, 2, 2, 2, 2,			/* 00 .. 07 */
 	3, 3, 3, 3, 3, 3, 3, 3,			/* 08 .. 0f */
 	4, 4, 4, 4, 4, 4, 4, 4,			/* 10 .. 17 */
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 498ad50d..8779518 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -185,16 +185,6 @@ xfs_bmap_btree_to_extents(
 	int			*logflagsp, /* inode logging flags */
 	int			whichfork); /* data or attr fork */
 
-#ifdef DEBUG
-/*
- * Check that the extents list for the inode ip is in the right order.
- */
-STATIC void
-xfs_bmap_check_extents(
-	xfs_inode_t		*ip,		/* incore inode pointer */
-	int			whichfork);	/* data or attr fork */
-#endif
-
 /*
  * Called by xfs_bmapi to update file extent records and the btree
  * after removing space (or undoing a delayed allocation).
@@ -410,7 +400,6 @@ xfs_bmap_count_leaves(
 STATIC int
 xfs_bmap_disk_count_leaves(
 	xfs_ifork_t		*ifp,
-	xfs_mount_t		*mp,
 	xfs_extnum_t		idx,
 	xfs_bmbt_block_t	*block,
 	int			numrecs,
@@ -684,7 +673,7 @@ xfs_bmap_add_extent(
 		ASSERT(nblks <= da_old);
 		if (nblks < da_old)
 			xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS,
-				(int)(da_old - nblks), rsvd);
+				(int64_t)(da_old - nblks), rsvd);
 	}
 	/*
 	 * Clear out the allocated field, done with it now in any case.
@@ -1209,7 +1198,7 @@ xfs_bmap_add_extent_delay_real(
 		diff = (int)(temp + temp2 - STARTBLOCKVAL(PREV.br_startblock) -
 			(cur ? cur->bc_private.b.allocated : 0));
 		if (diff > 0 &&
-		    xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS, -diff, rsvd)) {
+		    xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd)) {
 			/*
 			 * Ick gross gag me with a spoon.
 			 */
@@ -1220,7 +1209,7 @@ xfs_bmap_add_extent_delay_real(
 					diff--;
 					if (!diff ||
 					    !xfs_mod_incore_sb(ip->i_mount,
-						    XFS_SBS_FDBLOCKS, -diff, rsvd))
+						    XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd))
 						break;
 				}
 				if (temp2) {
@@ -1228,7 +1217,7 @@ xfs_bmap_add_extent_delay_real(
 					diff--;
 					if (!diff ||
 					    !xfs_mod_incore_sb(ip->i_mount,
-						    XFS_SBS_FDBLOCKS, -diff, rsvd))
+						    XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd))
 						break;
 				}
 			}
@@ -2015,7 +2004,7 @@ xfs_bmap_add_extent_hole_delay(
 	if (oldlen != newlen) {
 		ASSERT(oldlen > newlen);
 		xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS,
-			(int)(oldlen - newlen), rsvd);
+			(int64_t)(oldlen - newlen), rsvd);
 		/*
 		 * Nothing to do for disk quota accounting here.
 		 */
@@ -3359,7 +3348,7 @@ xfs_bmap_del_extent(
 	 */
 	ASSERT(da_old >= da_new);
 	if (da_old > da_new)
-		xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, (int)(da_old - da_new),
+		xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, (int64_t)(da_old - da_new),
 			rsvd);
 	if (delta) {
 		/* DELTA: report the original extent. */
@@ -3543,6 +3532,7 @@ xfs_bmap_forkoff_reset(
 	if (whichfork == XFS_ATTR_FORK &&
 	    (ip->i_d.di_format != XFS_DINODE_FMT_DEV) &&
 	    (ip->i_d.di_format != XFS_DINODE_FMT_UUID) &&
+	    (ip->i_d.di_format != XFS_DINODE_FMT_BTREE) &&
 	    ((mp->m_attroffset >> 3) > ip->i_d.di_forkoff)) {
 		ip->i_d.di_forkoff = mp->m_attroffset >> 3;
 		ip->i_df.if_ext_max = XFS_IFORK_DSIZE(ip) /
@@ -4079,7 +4069,7 @@ xfs_bmap_add_attrfork(
 		} else
 			XFS_SB_UNLOCK(mp, s);
 	}
-	if ((error = xfs_bmap_finish(&tp, &flist, firstblock, &committed)))
+	if ((error = xfs_bmap_finish(&tp, &flist, &committed)))
 		goto error2;
 	error = xfs_trans_commit(tp, XFS_TRANS_PERM_LOG_RES, NULL);
 	ASSERT(ip->i_df.if_ext_max ==
@@ -4212,7 +4202,6 @@ int						/* error */
 xfs_bmap_finish(
 	xfs_trans_t		**tp,		/* transaction pointer addr */
 	xfs_bmap_free_t		*flist,		/* i/o: list extents to free */
-	xfs_fsblock_t		firstblock,	/* controlled ag for allocs */
 	int			*committed)	/* xact committed or not */
 {
 	xfs_efd_log_item_t	*efd;		/* extent free data */
@@ -4533,8 +4522,7 @@ xfs_bmap_read_extents(
 			error0);
 		if (level == 0)
 			break;
-		pp = XFS_BTREE_PTR_ADDR(mp->m_sb.sb_blocksize, xfs_bmbt, block,
-			1, mp->m_bmap_dmxr[1]);
+		pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, 1, mp->m_bmap_dmxr[1]);
 		bno = be64_to_cpu(*pp);
 		XFS_WANT_CORRUPTED_GOTO(XFS_FSB_SANITY_CHECK(mp, bno), error0);
 		xfs_trans_brelse(tp, bp);
@@ -4577,8 +4565,7 @@ xfs_bmap_read_extents(
 		/*
 		 * Copy records into the extent records.
 		 */
-		frp = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_bmbt,
-			block, 1, mp->m_bmap_dmxr[0]);
+		frp = XFS_BTREE_REC_ADDR(xfs_bmbt, block, 1);
 		start = i;
 		for (j = 0; j < num_recs; j++, i++, frp++) {
 			trp = xfs_iext_get_ext(ifp, i);
@@ -4929,28 +4916,28 @@ xfs_bmapi(
 				if (rt) {
 					error = xfs_mod_incore_sb(mp,
 							XFS_SBS_FREXTENTS,
-							-(extsz), (flags &
+							-((int64_t)extsz), (flags &
 							XFS_BMAPI_RSVBLOCKS));
 				} else {
 					error = xfs_mod_incore_sb(mp,
 							XFS_SBS_FDBLOCKS,
-							-(alen), (flags &
+							-((int64_t)alen), (flags &
 							XFS_BMAPI_RSVBLOCKS));
 				}
 				if (!error) {
 					error = xfs_mod_incore_sb(mp,
 							XFS_SBS_FDBLOCKS,
-							-(indlen), (flags &
+							-((int64_t)indlen), (flags &
 							XFS_BMAPI_RSVBLOCKS));
 					if (error && rt)
 						xfs_mod_incore_sb(mp,
 							XFS_SBS_FREXTENTS,
-							extsz, (flags &
+							(int64_t)extsz, (flags &
 							XFS_BMAPI_RSVBLOCKS));
 					else if (error)
 						xfs_mod_incore_sb(mp,
 							XFS_SBS_FDBLOCKS,
-							alen, (flags &
+							(int64_t)alen, (flags &
 							XFS_BMAPI_RSVBLOCKS));
 				}
 
@@ -5616,13 +5603,13 @@ xfs_bunmapi(
 				rtexts = XFS_FSB_TO_B(mp, del.br_blockcount);
 				do_div(rtexts, mp->m_sb.sb_rextsize);
 				xfs_mod_incore_sb(mp, XFS_SBS_FREXTENTS,
-						(int)rtexts, rsvd);
+						(int64_t)rtexts, rsvd);
 				(void)XFS_TRANS_RESERVE_QUOTA_NBLKS(mp,
 					NULL, ip, -((long)del.br_blockcount), 0,
 					XFS_QMOPT_RES_RTBLKS);
 			} else {
 				xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS,
-						(int)del.br_blockcount, rsvd);
+						(int64_t)del.br_blockcount, rsvd);
 				(void)XFS_TRANS_RESERVE_QUOTA_NBLKS(mp,
 					NULL, ip, -((long)del.br_blockcount), 0,
 					XFS_QMOPT_RES_REGBLKS);
@@ -6048,32 +6035,6 @@ xfs_bmap_eof(
 }
 
 #ifdef DEBUG
-/*
- * Check that the extents list for the inode ip is in the right order.
- */
-STATIC void
-xfs_bmap_check_extents(
-	xfs_inode_t		*ip,		/* incore inode pointer */
-	int			whichfork)	/* data or attr fork */
-{
-	xfs_bmbt_rec_t		*ep;		/* current extent entry */
-	xfs_extnum_t		idx;		/* extent record index */
-	xfs_ifork_t		*ifp;		/* inode fork pointer */
-	xfs_extnum_t		nextents;	/* number of extents in list */
-	xfs_bmbt_rec_t		*nextp;		/* next extent entry */
-
-	ifp = XFS_IFORK_PTR(ip, whichfork);
-	ASSERT(ifp->if_flags & XFS_IFEXTENTS);
-	nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
-	ep = xfs_iext_get_ext(ifp, 0);
-	for (idx = 0; idx < nextents - 1; idx++) {
-		nextp = xfs_iext_get_ext(ifp, idx + 1);
-		xfs_btree_check_rec(XFS_BTNUM_BMAP, (void *)ep,
-			(void *)(nextp));
-		ep = nextp;
-	}
-}
-
 STATIC
 xfs_buf_t *
 xfs_bmap_get_bp(
@@ -6156,8 +6117,7 @@ xfs_check_block(
 		if (root) {
 			keyp = XFS_BMAP_BROOT_KEY_ADDR(block, i, sz);
 		} else {
-			keyp = XFS_BTREE_KEY_ADDR(mp->m_sb.sb_blocksize,
-				xfs_bmbt, block, i, dmxr);
+			keyp = XFS_BTREE_KEY_ADDR(xfs_bmbt, block, i);
 		}
 
 		if (prevp) {
@@ -6172,15 +6132,14 @@ xfs_check_block(
 		if (root) {
 			pp = XFS_BMAP_BROOT_PTR_ADDR(block, i, sz);
 		} else {
-			pp = XFS_BTREE_PTR_ADDR(mp->m_sb.sb_blocksize,
-				xfs_bmbt, block, i, dmxr);
+			pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, i, dmxr);
 		}
 		for (j = i+1; j <= be16_to_cpu(block->bb_numrecs); j++) {
 			if (root) {
 				thispa = XFS_BMAP_BROOT_PTR_ADDR(block, j, sz);
 			} else {
-				thispa = XFS_BTREE_PTR_ADDR(mp->m_sb.sb_blocksize,
-					xfs_bmbt, block, j, dmxr);
+				thispa = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, j,
+							    dmxr);
 			}
 			if (*thispa == *pp) {
 				cmn_err(CE_WARN, "%s: thispa(%d) == pp(%d) %Ld",
@@ -6267,8 +6226,7 @@ xfs_bmap_check_leaf_extents(
 		 */
 
 		xfs_check_block(block, mp, 0, 0);
-		pp = XFS_BTREE_PTR_ADDR(mp->m_sb.sb_blocksize, xfs_bmbt, block,
-			1, mp->m_bmap_dmxr[1]);
+		pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, 1, mp->m_bmap_dmxr[1]);
 		bno = be64_to_cpu(*pp);
 		XFS_WANT_CORRUPTED_GOTO(XFS_FSB_SANITY_CHECK(mp, bno), error0);
 		if (bp_release) {
@@ -6305,11 +6263,9 @@ xfs_bmap_check_leaf_extents(
 		 * conform with the first entry in this one.
 		 */
 
-		ep = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_bmbt,
-			block, 1, mp->m_bmap_dmxr[0]);
+		ep = XFS_BTREE_REC_ADDR(xfs_bmbt, block, 1);
 		for (j = 1; j < num_recs; j++) {
-			nextp = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_bmbt,
-				block, j + 1, mp->m_bmap_dmxr[0]);
+			nextp = XFS_BTREE_REC_ADDR(xfs_bmbt, block, j + 1);
 			if (lastp) {
 				xfs_btree_check_rec(XFS_BTNUM_BMAP,
 					(void *)lastp, (void *)ep);
@@ -6454,8 +6410,7 @@ xfs_bmap_count_tree(
 		}
 
 		/* Dive to the next level */
-		pp = XFS_BTREE_PTR_ADDR(mp->m_sb.sb_blocksize,
-			xfs_bmbt, block, 1, mp->m_bmap_dmxr[1]);
+		pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, 1, mp->m_bmap_dmxr[1]);
 		bno = be64_to_cpu(*pp);
 		if (unlikely((error =
 		     xfs_bmap_count_tree(mp, tp, ifp, bno, level, count)) < 0)) {
@@ -6470,7 +6425,7 @@ xfs_bmap_count_tree(
 		for (;;) {
 			nextbno = be64_to_cpu(block->bb_rightsib);
 			numrecs = be16_to_cpu(block->bb_numrecs);
-			if (unlikely(xfs_bmap_disk_count_leaves(ifp, mp,
+			if (unlikely(xfs_bmap_disk_count_leaves(ifp,
 					0, block, numrecs, count) < 0)) {
 				xfs_trans_brelse(tp, bp);
 				XFS_ERROR_REPORT("xfs_bmap_count_tree(2)",
@@ -6518,7 +6473,6 @@ xfs_bmap_count_leaves(
 int
 xfs_bmap_disk_count_leaves(
 	xfs_ifork_t		*ifp,
-	xfs_mount_t		*mp,
 	xfs_extnum_t		idx,
 	xfs_bmbt_block_t	*block,
 	int			numrecs,
@@ -6528,8 +6482,7 @@ xfs_bmap_disk_count_leaves(
 	xfs_bmbt_rec_t	*frp;
 
 	for (b = 1; b <= numrecs; b++) {
-		frp = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize,
-			xfs_bmbt, block, idx + b, mp->m_bmap_dmxr[0]);
+		frp = XFS_BTREE_REC_ADDR(xfs_bmbt, block, idx + b);
 		*count += xfs_bmbt_disk_get_blockcount(frp);
 	}
 	return 0;
diff --git a/fs/xfs/xfs_bmap.h b/fs/xfs/xfs_bmap.h
index 80e9340..4f24c7e 100644
--- a/fs/xfs/xfs_bmap.h
+++ b/fs/xfs/xfs_bmap.h
@@ -202,7 +202,6 @@ int						/* error */
 xfs_bmap_finish(
 	struct xfs_trans	**tp,		/* transaction pointer addr */
 	xfs_bmap_free_t		*flist,		/* i/o: list extents to free */
-	xfs_fsblock_t		firstblock,	/* controlled a.g. for allocs */
 	int			*committed);	/* xact committed or not */
 
 /*
diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c
index a7b835b..0bf192f 100644
--- a/fs/xfs/xfs_bmap_btree.c
+++ b/fs/xfs/xfs_bmap_btree.c
@@ -678,47 +678,6 @@ error0:
 	return error;
 }
 
-#ifdef DEBUG
-/*
- * Get the data from the pointed-to record.
- */
-int
-xfs_bmbt_get_rec(
-	xfs_btree_cur_t		*cur,
-	xfs_fileoff_t		*off,
-	xfs_fsblock_t		*bno,
-	xfs_filblks_t		*len,
-	xfs_exntst_t		*state,
-	int			*stat)
-{
-	xfs_bmbt_block_t	*block;
-	xfs_buf_t		*bp;
-#ifdef DEBUG
-	int			error;
-#endif
-	int			ptr;
-	xfs_bmbt_rec_t		*rp;
-
-	block = xfs_bmbt_get_block(cur, 0, &bp);
-	ptr = cur->bc_ptrs[0];
-#ifdef DEBUG
-	if ((error = xfs_btree_check_lblock(cur, block, 0, bp)))
-		return error;
-#endif
-	if (ptr > be16_to_cpu(block->bb_numrecs) || ptr <= 0) {
-		*stat = 0;
-		return 0;
-	}
-	rp = XFS_BMAP_REC_IADDR(block, ptr, cur);
-	*off = xfs_bmbt_disk_get_startoff(rp);
-	*bno = xfs_bmbt_disk_get_startblock(rp);
-	*len = xfs_bmbt_disk_get_blockcount(rp);
-	*state = xfs_bmbt_disk_get_state(rp);
-	*stat = 1;
-	return 0;
-}
-#endif
-
 /*
  * Insert one record/level.  Return information to the caller
  * allowing the next level up to proceed if necessary.
@@ -1731,9 +1690,9 @@ xfs_bmdr_to_bmbt(
 	rblock->bb_leftsib = cpu_to_be64(NULLDFSBNO);
 	rblock->bb_rightsib = cpu_to_be64(NULLDFSBNO);
 	dmxr = (int)XFS_BTREE_BLOCK_MAXRECS(dblocklen, xfs_bmdr, 0);
-	fkp = XFS_BTREE_KEY_ADDR(dblocklen, xfs_bmdr, dblock, 1, dmxr);
+	fkp = XFS_BTREE_KEY_ADDR(xfs_bmdr, dblock, 1);
 	tkp = XFS_BMAP_BROOT_KEY_ADDR(rblock, 1, rblocklen);
-	fpp = XFS_BTREE_PTR_ADDR(dblocklen, xfs_bmdr, dblock, 1, dmxr);
+	fpp = XFS_BTREE_PTR_ADDR(xfs_bmdr, dblock, 1, dmxr);
 	tpp = XFS_BMAP_BROOT_PTR_ADDR(rblock, 1, rblocklen);
 	dmxr = be16_to_cpu(dblock->bb_numrecs);
 	memcpy(tkp, fkp, sizeof(*fkp) * dmxr);
@@ -1862,7 +1821,7 @@ xfs_bmbt_delete(
  * xfs_bmbt_get_startblock, xfs_bmbt_get_blockcount and xfs_bmbt_get_state.
  */
 
-STATIC __inline__ void
+STATIC_INLINE void
 __xfs_bmbt_get_all(
 		__uint64_t l0,
 		__uint64_t l1,
@@ -2016,30 +1975,6 @@ xfs_bmbt_disk_get_blockcount(
 }
 
 /*
- * Extract the startblock field from an on disk bmap extent record.
- */
-xfs_fsblock_t
-xfs_bmbt_disk_get_startblock(
-	xfs_bmbt_rec_t	*r)
-{
-#if XFS_BIG_BLKNOS
-	return (((xfs_fsblock_t)INT_GET(r->l0, ARCH_CONVERT) & XFS_MASK64LO(9)) << 43) |
-	       (((xfs_fsblock_t)INT_GET(r->l1, ARCH_CONVERT)) >> 21);
-#else
-#ifdef DEBUG
-	xfs_dfsbno_t	b;
-
-	b = (((xfs_dfsbno_t)INT_GET(r->l0, ARCH_CONVERT) & XFS_MASK64LO(9)) << 43) |
-	    (((xfs_dfsbno_t)INT_GET(r->l1, ARCH_CONVERT)) >> 21);
-	ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b));
-	return (xfs_fsblock_t)b;
-#else	/* !DEBUG */
-	return (xfs_fsblock_t)(((xfs_dfsbno_t)INT_GET(r->l1, ARCH_CONVERT)) >> 21);
-#endif	/* DEBUG */
-#endif	/* XFS_BIG_BLKNOS */
-}
-
-/*
  * Extract the startoff field from a disk format bmap extent record.
  */
 xfs_fileoff_t
@@ -2049,17 +1984,6 @@ xfs_bmbt_disk_get_startoff(
 	return ((xfs_fileoff_t)INT_GET(r->l0, ARCH_CONVERT) &
 		 XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN)) >> 9;
 }
-
-xfs_exntst_t
-xfs_bmbt_disk_get_state(
-	xfs_bmbt_rec_t  *r)
-{
-	int	ext_flag;
-
-	ext_flag = (int)((INT_GET(r->l0, ARCH_CONVERT)) >> (64 - BMBT_EXNTFLAG_BITLEN));
-	return xfs_extent_state(xfs_bmbt_disk_get_blockcount(r),
-				ext_flag);
-}
 #endif /* XFS_NATIVE_HOST */
 
 
@@ -2684,9 +2608,9 @@ xfs_bmbt_to_bmdr(
 	dblock->bb_numrecs = rblock->bb_numrecs;
 	dmxr = (int)XFS_BTREE_BLOCK_MAXRECS(dblocklen, xfs_bmdr, 0);
 	fkp = XFS_BMAP_BROOT_KEY_ADDR(rblock, 1, rblocklen);
-	tkp = XFS_BTREE_KEY_ADDR(dblocklen, xfs_bmdr, dblock, 1, dmxr);
+	tkp = XFS_BTREE_KEY_ADDR(xfs_bmdr, dblock, 1);
 	fpp = XFS_BMAP_BROOT_PTR_ADDR(rblock, 1, rblocklen);
-	tpp = XFS_BTREE_PTR_ADDR(dblocklen, xfs_bmdr, dblock, 1, dmxr);
+	tpp = XFS_BTREE_PTR_ADDR(xfs_bmdr, dblock, 1, dmxr);
 	dmxr = be16_to_cpu(dblock->bb_numrecs);
 	memcpy(tkp, fkp, sizeof(*fkp) * dmxr);
 	memcpy(tpp, fpp, sizeof(*fpp) * dmxr);
diff --git a/fs/xfs/xfs_bmap_btree.h b/fs/xfs/xfs_bmap_btree.h
index 49539de..a77b1b7 100644
--- a/fs/xfs/xfs_bmap_btree.h
+++ b/fs/xfs/xfs_bmap_btree.h
@@ -175,19 +175,11 @@ typedef struct xfs_btree_lblock xfs_bmbt_block_t;
 
 #define XFS_BUF_TO_BMBT_BLOCK(bp)	((xfs_bmbt_block_t *)XFS_BUF_PTR(bp))
 
-#define XFS_BMAP_IBLOCK_SIZE(lev,cur)	(1 << (cur)->bc_blocklog)
 #define XFS_BMAP_RBLOCK_DSIZE(lev,cur)	((cur)->bc_private.b.forksize)
 #define XFS_BMAP_RBLOCK_ISIZE(lev,cur)	\
 	((int)XFS_IFORK_PTR((cur)->bc_private.b.ip, \
 		    (cur)->bc_private.b.whichfork)->if_broot_bytes)
 
-#define XFS_BMAP_BLOCK_DSIZE(lev,cur)	\
-	(((lev) == (cur)->bc_nlevels - 1 ? \
-		XFS_BMAP_RBLOCK_DSIZE(lev,cur) : XFS_BMAP_IBLOCK_SIZE(lev,cur)))
-#define XFS_BMAP_BLOCK_ISIZE(lev,cur)	\
-	(((lev) == (cur)->bc_nlevels - 1 ? \
-		XFS_BMAP_RBLOCK_ISIZE(lev,cur) : XFS_BMAP_IBLOCK_SIZE(lev,cur)))
-
 #define XFS_BMAP_BLOCK_DMAXRECS(lev,cur) \
 	(((lev) == (cur)->bc_nlevels - 1 ? \
 		XFS_BTREE_BLOCK_MAXRECS(XFS_BMAP_RBLOCK_DSIZE(lev,cur), \
@@ -210,37 +202,21 @@ typedef struct xfs_btree_lblock xfs_bmbt_block_t;
 				xfs_bmbt, (lev) == 0) : \
 			((cur)->bc_mp->m_bmap_dmnr[(lev) != 0])))
 
-#define XFS_BMAP_REC_DADDR(bb,i,cur)	\
-	(XFS_BTREE_REC_ADDR(XFS_BMAP_BLOCK_DSIZE(			\
-			be16_to_cpu((bb)->bb_level), cur),		\
-			xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS(	\
-				be16_to_cpu((bb)->bb_level), cur)))
-#define XFS_BMAP_REC_IADDR(bb,i,cur)	\
-	(XFS_BTREE_REC_ADDR(XFS_BMAP_BLOCK_ISIZE(			\
-			be16_to_cpu((bb)->bb_level), cur),		\
-			xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS(	\
-				be16_to_cpu((bb)->bb_level), cur)))
+#define XFS_BMAP_REC_DADDR(bb,i,cur)	(XFS_BTREE_REC_ADDR(xfs_bmbt, bb, i))
+
+#define XFS_BMAP_REC_IADDR(bb,i,cur)	(XFS_BTREE_REC_ADDR(xfs_bmbt, bb, i))
 
 #define XFS_BMAP_KEY_DADDR(bb,i,cur)	\
-	(XFS_BTREE_KEY_ADDR(XFS_BMAP_BLOCK_DSIZE(			\
-			be16_to_cpu((bb)->bb_level), cur),		\
-			xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS(	\
-				be16_to_cpu((bb)->bb_level), cur)))
+	(XFS_BTREE_KEY_ADDR(xfs_bmbt, bb, i))
+
 #define XFS_BMAP_KEY_IADDR(bb,i,cur)	\
-	(XFS_BTREE_KEY_ADDR(XFS_BMAP_BLOCK_ISIZE(			\
-			be16_to_cpu((bb)->bb_level), cur),		\
-			xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS(	\
-				be16_to_cpu((bb)->bb_level), cur)))
+	(XFS_BTREE_KEY_ADDR(xfs_bmbt, bb, i))
 
 #define XFS_BMAP_PTR_DADDR(bb,i,cur)	\
-	(XFS_BTREE_PTR_ADDR(XFS_BMAP_BLOCK_DSIZE(			\
-			be16_to_cpu((bb)->bb_level), cur),		\
-			xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS(	\
+	(XFS_BTREE_PTR_ADDR(xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS(	\
 				be16_to_cpu((bb)->bb_level), cur)))
 #define XFS_BMAP_PTR_IADDR(bb,i,cur)	\
-	(XFS_BTREE_PTR_ADDR(XFS_BMAP_BLOCK_ISIZE(			\
-			be16_to_cpu((bb)->bb_level), cur),		\
-			xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS(	\
+	(XFS_BTREE_PTR_ADDR(xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS(	\
 				be16_to_cpu((bb)->bb_level), cur)))
 
 /*
@@ -248,11 +224,11 @@ typedef struct xfs_btree_lblock xfs_bmbt_block_t;
  * we don't have a cursor.
  */
 #define XFS_BMAP_BROOT_REC_ADDR(bb,i,sz) \
-	(XFS_BTREE_REC_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz)))
+	(XFS_BTREE_REC_ADDR(xfs_bmbt,bb,i))
 #define XFS_BMAP_BROOT_KEY_ADDR(bb,i,sz) \
-	(XFS_BTREE_KEY_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz)))
+	(XFS_BTREE_KEY_ADDR(xfs_bmbt,bb,i))
 #define XFS_BMAP_BROOT_PTR_ADDR(bb,i,sz) \
-	(XFS_BTREE_PTR_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz)))
+	(XFS_BTREE_PTR_ADDR(xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz)))
 
 #define XFS_BMAP_BROOT_NUMRECS(bb)	be16_to_cpu((bb)->bb_numrecs)
 #define XFS_BMAP_BROOT_MAXRECS(sz)	XFS_BTREE_BLOCK_MAXRECS(sz,xfs_bmbt,0)
@@ -315,15 +291,11 @@ extern xfs_exntst_t xfs_bmbt_get_state(xfs_bmbt_rec_t *r);
 
 #ifndef XFS_NATIVE_HOST
 extern void xfs_bmbt_disk_get_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s);
-extern xfs_exntst_t xfs_bmbt_disk_get_state(xfs_bmbt_rec_t *r);
 extern xfs_filblks_t xfs_bmbt_disk_get_blockcount(xfs_bmbt_rec_t *r);
-extern xfs_fsblock_t xfs_bmbt_disk_get_startblock(xfs_bmbt_rec_t *r);
 extern xfs_fileoff_t xfs_bmbt_disk_get_startoff(xfs_bmbt_rec_t *r);
 #else
 #define xfs_bmbt_disk_get_all(r, s)	xfs_bmbt_get_all(r, s)
-#define xfs_bmbt_disk_get_state(r)	xfs_bmbt_get_state(r)
 #define xfs_bmbt_disk_get_blockcount(r)	xfs_bmbt_get_blockcount(r)
-#define xfs_bmbt_disk_get_startblock(r)	xfs_bmbt_get_blockcount(r)
 #define xfs_bmbt_disk_get_startoff(r)	xfs_bmbt_get_startoff(r)
 #endif /* XFS_NATIVE_HOST */
 
@@ -364,15 +336,6 @@ extern void xfs_bmbt_to_bmdr(xfs_bmbt_block_t *, int, xfs_bmdr_block_t *, int);
 extern int xfs_bmbt_update(struct xfs_btree_cur *, xfs_fileoff_t,
 				xfs_fsblock_t, xfs_filblks_t, xfs_exntst_t);
 
-#ifdef DEBUG
-/*
- * Get the data from the pointed-to record.
- */
-extern int xfs_bmbt_get_rec(struct xfs_btree_cur *, xfs_fileoff_t *,
-				xfs_fsblock_t *, xfs_filblks_t *,
-				xfs_exntst_t *, int *);
-#endif
-
 #endif	/* __KERNEL__ */
 
 #endif	/* __XFS_BMAP_BTREE_H__ */
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index 892b06c..4e27d55 100644
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -122,13 +122,13 @@ extern const __uint32_t	xfs_magics[];
  * Given block size, type prefix, block pointer, and index of requested entry
  * (first entry numbered 1).
  */
-#define	XFS_BTREE_REC_ADDR(bsz,t,bb,i,mxr)	\
+#define	XFS_BTREE_REC_ADDR(t,bb,i)	\
 	((t ## _rec_t *)((char *)(bb) + sizeof(t ## _block_t) + \
 	 ((i) - 1) * sizeof(t ## _rec_t)))
-#define	XFS_BTREE_KEY_ADDR(bsz,t,bb,i,mxr)	\
+#define	XFS_BTREE_KEY_ADDR(t,bb,i)	\
 	((t ## _key_t *)((char *)(bb) + sizeof(t ## _block_t) + \
 	 ((i) - 1) * sizeof(t ## _key_t)))
-#define	XFS_BTREE_PTR_ADDR(bsz,t,bb,i,mxr)	\
+#define	XFS_BTREE_PTR_ADDR(t,bb,i,mxr)	\
 	((t ## _ptr_t *)((char *)(bb) + sizeof(t ## _block_t) + \
 	 (mxr) * sizeof(t ## _key_t) + ((i) - 1) * sizeof(t ## _ptr_t)))
 
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index 7a55c24..6c1bddc 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -660,7 +660,7 @@ xfs_buf_item_committing(xfs_buf_log_item_t *bip, xfs_lsn_t commit_lsn)
 /*
  * This is the ops vector shared by all buf log items.
  */
-STATIC struct xfs_item_ops xfs_buf_item_ops = {
+static struct xfs_item_ops xfs_buf_item_ops = {
 	.iop_size	= (uint(*)(xfs_log_item_t*))xfs_buf_item_size,
 	.iop_format	= (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 					xfs_buf_item_format,
diff --git a/fs/xfs/xfs_buf_item.h b/fs/xfs/xfs_buf_item.h
index 07c708c..d7e1361 100644
--- a/fs/xfs/xfs_buf_item.h
+++ b/fs/xfs/xfs_buf_item.h
@@ -21,23 +21,7 @@
 /*
  * This is the structure used to lay out a buf log item in the
  * log.  The data map describes which 128 byte chunks of the buffer
- * have been logged.  This structure works only on buffers that
- * reside up to the first TB in the filesystem.  These buffers are
- * generated only by pre-6.2 systems and are known as XFS_LI_6_1_BUF.
- */
-typedef struct xfs_buf_log_format_v1 {
-	unsigned short	blf_type;	/* buf log item type indicator */
-	unsigned short	blf_size;	/* size of this item */
-	__int32_t	blf_blkno;	/* starting blkno of this buf */
-	ushort		blf_flags;	/* misc state */
-	ushort		blf_len;	/* number of blocks in this buf */
-	unsigned int	blf_map_size;	/* size of data bitmap in words */
-	unsigned int	blf_data_map[1];/* variable size bitmap of */
-					/*   regions of buffer in this item */
-} xfs_buf_log_format_v1_t;
-
-/*
- * This is a form of the above structure with a 64 bit blkno field.
+ * have been logged.
  * For 6.2 and beyond, this is XFS_LI_BUF.  We use this to log everything.
  */
 typedef struct xfs_buf_log_format_t {
diff --git a/fs/xfs/xfs_cap.h b/fs/xfs/xfs_cap.h
deleted file mode 100644
index 7a0e482..0000000
--- a/fs/xfs/xfs_cap.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (c) 2000-2002,2005 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_CAP_H__
-#define __XFS_CAP_H__
-
-/*
- * Capabilities
- */
-typedef __uint64_t xfs_cap_value_t;
-
-typedef struct xfs_cap_set {
-	xfs_cap_value_t	cap_effective;	/* use in capability checks */
-	xfs_cap_value_t	cap_permitted;	/* combined with file attrs */
-	xfs_cap_value_t	cap_inheritable;/* pass through exec */
-} xfs_cap_set_t;
-
-/* On-disk XFS extended attribute names */
-#define SGI_CAP_FILE	"SGI_CAP_FILE"
-#define SGI_CAP_FILE_SIZE	(sizeof(SGI_CAP_FILE)-1)
-#define SGI_CAP_LINUX	"SGI_CAP_LINUX"
-#define SGI_CAP_LINUX_SIZE	(sizeof(SGI_CAP_LINUX)-1)
-
-/*
- * For Linux, we take the bitfields directly from capability.h
- * and no longer attempt to keep this attribute ondisk compatible
- * with IRIX.  Since this attribute is only set on executables,
- * it just doesn't make much sense to try.  We do use a different
- * named attribute though, to avoid confusion.
- */
-
-#ifdef __KERNEL__
-
-#ifdef CONFIG_FS_POSIX_CAP
-
-#include <linux/posix_cap_xattr.h>
-
-struct bhv_vnode;
-
-extern int xfs_cap_vhascap(struct bhv_vnode *);
-extern int xfs_cap_vset(struct bhv_vnode *, void *, size_t);
-extern int xfs_cap_vget(struct bhv_vnode *, void *, size_t);
-extern int xfs_cap_vremove(struct bhv_vnode *);
-
-#define _CAP_EXISTS		xfs_cap_vhascap
-
-#else
-#define xfs_cap_vset(v,p,sz)	(-EOPNOTSUPP)
-#define xfs_cap_vget(v,p,sz)	(-EOPNOTSUPP)
-#define xfs_cap_vremove(v)	(-EOPNOTSUPP)
-#define _CAP_EXISTS		(NULL)
-#endif
-
-#endif	/* __KERNEL__ */
-
-#endif  /* __XFS_CAP_H__ */
diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c
index a68bc1f1..aea37df 100644
--- a/fs/xfs/xfs_da_btree.c
+++ b/fs/xfs/xfs_da_btree.c
@@ -1090,8 +1090,7 @@ xfs_da_node_lookup_int(xfs_da_state_t *state, int *result)
 		if (blk->magic == XFS_DA_NODE_MAGIC) {
 			node = blk->bp->data;
 			max = be16_to_cpu(node->hdr.count);
-			btreehashval = node->btree[max-1].hashval;
-			blk->hashval = be32_to_cpu(btreehashval);
+			blk->hashval = be32_to_cpu(node->btree[max-1].hashval);
 
 			/*
 			 * Binary search.  (note: small blocks will skip loop)
@@ -2166,21 +2165,6 @@ xfs_da_reada_buf(
 		return rval;
 }
 
-/*
- * Calculate the number of bits needed to hold i different values.
- */
-uint
-xfs_da_log2_roundup(uint i)
-{
-	uint rval;
-
-	for (rval = 0; rval < NBBY * sizeof(i); rval++) {
-		if ((1 << rval) >= i)
-			break;
-	}
-	return(rval);
-}
-
 kmem_zone_t *xfs_da_state_zone;	/* anchor for state struct zone */
 kmem_zone_t *xfs_dabuf_zone;		/* dabuf zone */
 
diff --git a/fs/xfs/xfs_da_btree.h b/fs/xfs/xfs_da_btree.h
index 4ab865e..44dabf0 100644
--- a/fs/xfs/xfs_da_btree.h
+++ b/fs/xfs/xfs_da_btree.h
@@ -249,7 +249,6 @@ int	xfs_da_shrink_inode(xfs_da_args_t *args, xfs_dablk_t dead_blkno,
 					  xfs_dabuf_t *dead_buf);
 
 uint xfs_da_hashname(const uchar_t *name_string, int name_length);
-uint xfs_da_log2_roundup(uint i);
 xfs_da_state_t *xfs_da_state_alloc(void);
 void xfs_da_state_free(xfs_da_state_t *state);
 
diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
index 50d0fae..b847e6a 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -41,7 +41,6 @@
 #include "xfs_itable.h"
 #include "xfs_dfrag.h"
 #include "xfs_error.h"
-#include "xfs_mac.h"
 #include "xfs_rw.h"
 
 /*
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index b95681b..b1af544 100644
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -132,32 +132,6 @@ xfs_errortag_add(int error_tag, xfs_mount_t *mp)
 }
 
 int
-xfs_errortag_clear(int error_tag, xfs_mount_t *mp)
-{
-	int i;
-	int64_t fsid;
-
-	memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
-
-	for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
-		if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) {
-			xfs_etest[i] = 0;
-			xfs_etest_fsid[i] = 0LL;
-			kmem_free(xfs_etest_fsname[i],
-				  strlen(xfs_etest_fsname[i]) + 1);
-			xfs_etest_fsname[i] = NULL;
-			cmn_err(CE_WARN, "Cleared XFS error tag #%d",
-				error_tag);
-			return 0;
-		}
-	}
-
-	cmn_err(CE_WARN, "XFS error tag %d not on", error_tag);
-
-	return 1;
-}
-
-int
 xfs_errortag_clearall_umount(int64_t fsid, char *fsname, int loud)
 {
 	int i;
diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h
index 0893e16..5599ada 100644
--- a/fs/xfs/xfs_error.h
+++ b/fs/xfs/xfs_error.h
@@ -144,7 +144,6 @@ extern void xfs_error_test_init(void);
 #endif /* __ANSI_CPP__ */
 
 extern int xfs_errortag_add(int error_tag, xfs_mount_t *mp);
-extern int xfs_errortag_clear(int error_tag, xfs_mount_t *mp);
 extern int xfs_errortag_clearall(xfs_mount_t *mp);
 extern int xfs_errortag_clearall_umount(int64_t fsid, char *fsname, int loud);
 #else
@@ -180,6 +179,6 @@ extern void xfs_fs_cmn_err(int level, struct xfs_mount *mp, char *fmt, ...);
 	xfs_fs_cmn_err(level, mp, fmt "  Unmount and run xfs_repair.", ## args)
 
 #define xfs_fs_mount_cmn_err(f, fmt, args...) \
-	((f & XFS_MFSI_QUIET)? cmn_err(CE_WARN, "XFS: " fmt, ## args) : (void)0)
+	((f & XFS_MFSI_QUIET)? (void)0 : cmn_err(CE_WARN, "XFS: " fmt, ## args))
 
 #endif	/* __XFS_ERROR_H__ */
diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c
index 6dba781..3b14427 100644
--- a/fs/xfs/xfs_extfree_item.c
+++ b/fs/xfs/xfs_extfree_item.c
@@ -227,7 +227,7 @@ xfs_efi_item_committing(xfs_efi_log_item_t *efip, xfs_lsn_t lsn)
 /*
  * This is the ops vector shared by all efi log items.
  */
-STATIC struct xfs_item_ops xfs_efi_item_ops = {
+static struct xfs_item_ops xfs_efi_item_ops = {
 	.iop_size	= (uint(*)(xfs_log_item_t*))xfs_efi_item_size,
 	.iop_format	= (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 					xfs_efi_item_format,
@@ -525,7 +525,7 @@ xfs_efd_item_committing(xfs_efd_log_item_t *efip, xfs_lsn_t lsn)
 /*
  * This is the ops vector shared by all efd log items.
  */
-STATIC struct xfs_item_ops xfs_efd_item_ops = {
+static struct xfs_item_ops xfs_efd_item_ops = {
 	.iop_size	= (uint(*)(xfs_log_item_t*))xfs_efd_item_size,
 	.iop_format	= (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 					xfs_efd_item_format,
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index c064e72..32c37c1 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -250,8 +250,7 @@ xfs_growfs_data_private(
 		block->bb_numrecs = cpu_to_be16(1);
 		block->bb_leftsib = cpu_to_be32(NULLAGBLOCK);
 		block->bb_rightsib = cpu_to_be32(NULLAGBLOCK);
-		arec = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_alloc,
-			block, 1, mp->m_alloc_mxr[0]);
+		arec = XFS_BTREE_REC_ADDR(xfs_alloc, block, 1);
 		arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
 		arec->ar_blockcount = cpu_to_be32(
 			agsize - be32_to_cpu(arec->ar_startblock));
@@ -272,8 +271,7 @@ xfs_growfs_data_private(
 		block->bb_numrecs = cpu_to_be16(1);
 		block->bb_leftsib = cpu_to_be32(NULLAGBLOCK);
 		block->bb_rightsib = cpu_to_be32(NULLAGBLOCK);
-		arec = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_alloc,
-			block, 1, mp->m_alloc_mxr[0]);
+		arec = XFS_BTREE_REC_ADDR(xfs_alloc, block, 1);
 		arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
 		arec->ar_blockcount = cpu_to_be32(
 			agsize - be32_to_cpu(arec->ar_startblock));
@@ -460,7 +458,7 @@ xfs_fs_counts(
 {
 	unsigned long	s;
 
-	xfs_icsb_sync_counters_lazy(mp);
+	xfs_icsb_sync_counters_flags(mp, XFS_ICSB_LAZY_COUNT);
 	s = XFS_SB_LOCK(mp);
 	cnt->freedata = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
 	cnt->freertx = mp->m_sb.sb_frextents;
@@ -491,7 +489,7 @@ xfs_reserve_blocks(
 	__uint64_t              *inval,
 	xfs_fsop_resblks_t      *outval)
 {
-	__int64_t		lcounter, delta;
+	__int64_t		lcounter, delta, fdblks_delta;
 	__uint64_t		request;
 	unsigned long		s;
 
@@ -504,17 +502,35 @@ xfs_reserve_blocks(
 	}
 
 	request = *inval;
+
+	/*
+	 * With per-cpu counters, this becomes an interesting
+	 * problem. we needto work out if we are freeing or allocation
+	 * blocks first, then we can do the modification as necessary.
+	 *
+	 * We do this under the XFS_SB_LOCK so that if we are near
+	 * ENOSPC, we will hold out any changes while we work out
+	 * what to do. This means that the amount of free space can
+	 * change while we do this, so we need to retry if we end up
+	 * trying to reserve more space than is available.
+	 *
+	 * We also use the xfs_mod_incore_sb() interface so that we
+	 * don't have to care about whether per cpu counter are
+	 * enabled, disabled or even compiled in....
+	 */
+retry:
 	s = XFS_SB_LOCK(mp);
+	xfs_icsb_sync_counters_flags(mp, XFS_ICSB_SB_LOCKED);
 
 	/*
 	 * If our previous reservation was larger than the current value,
 	 * then move any unused blocks back to the free pool.
 	 */
-
+	fdblks_delta = 0;
 	if (mp->m_resblks > request) {
 		lcounter = mp->m_resblks_avail - request;
 		if (lcounter  > 0) {		/* release unused blocks */
-			mp->m_sb.sb_fdblocks += lcounter;
+			fdblks_delta = lcounter;
 			mp->m_resblks_avail -= lcounter;
 		}
 		mp->m_resblks = request;
@@ -522,24 +538,50 @@ xfs_reserve_blocks(
 		__int64_t	free;
 
 		free =  mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
+		if (!free)
+			goto out; /* ENOSPC and fdblks_delta = 0 */
+
 		delta = request - mp->m_resblks;
 		lcounter = free - delta;
 		if (lcounter < 0) {
 			/* We can't satisfy the request, just get what we can */
 			mp->m_resblks += free;
 			mp->m_resblks_avail += free;
+			fdblks_delta = -free;
 			mp->m_sb.sb_fdblocks = XFS_ALLOC_SET_ASIDE(mp);
 		} else {
+			fdblks_delta = -delta;
 			mp->m_sb.sb_fdblocks =
 				lcounter + XFS_ALLOC_SET_ASIDE(mp);
 			mp->m_resblks = request;
 			mp->m_resblks_avail += delta;
 		}
 	}
-
+out:
 	outval->resblks = mp->m_resblks;
 	outval->resblks_avail = mp->m_resblks_avail;
 	XFS_SB_UNLOCK(mp, s);
+
+	if (fdblks_delta) {
+		/*
+		 * If we are putting blocks back here, m_resblks_avail is
+		 * already at it's max so this will put it in the free pool.
+		 *
+		 * If we need space, we'll either succeed in getting it
+		 * from the free block count or we'll get an enospc. If
+		 * we get a ENOSPC, it means things changed while we were
+		 * calculating fdblks_delta and so we should try again to
+		 * see if there is anything left to reserve.
+		 *
+		 * Don't set the reserved flag here - we don't want to reserve
+		 * the extra reserve blocks from the reserve.....
+		 */
+		int error;
+		error = xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, fdblks_delta, 0);
+		if (error == ENOSPC)
+			goto retry;
+	}
+
 	return 0;
 }
 
diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index a446e5a..b5feb3e 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -342,7 +342,7 @@ xfs_ialloc_ag_alloc(
 	return 0;
 }
 
-STATIC __inline xfs_agnumber_t
+STATIC_INLINE xfs_agnumber_t
 xfs_ialloc_next_ag(
 	xfs_mount_t	*mp)
 {
diff --git a/fs/xfs/xfs_ialloc_btree.h b/fs/xfs/xfs_ialloc_btree.h
index 2c0e498..bf8e9af 100644
--- a/fs/xfs/xfs_ialloc_btree.h
+++ b/fs/xfs/xfs_ialloc_btree.h
@@ -89,7 +89,6 @@ typedef	struct xfs_btree_sblock xfs_inobt_block_t;
 /*
  * Real block structures have a size equal to the disk block size.
  */
-#define	XFS_INOBT_BLOCK_SIZE(lev,cur)	(1 << (cur)->bc_blocklog)
 #define	XFS_INOBT_BLOCK_MAXRECS(lev,cur) ((cur)->bc_mp->m_inobt_mxr[lev != 0])
 #define	XFS_INOBT_BLOCK_MINRECS(lev,cur) ((cur)->bc_mp->m_inobt_mnr[lev != 0])
 #define	XFS_INOBT_IS_LAST_REC(cur)	\
@@ -110,14 +109,13 @@ typedef	struct xfs_btree_sblock xfs_inobt_block_t;
  * Record, key, and pointer address macros for btree blocks.
  */
 #define XFS_INOBT_REC_ADDR(bb,i,cur) \
-	(XFS_BTREE_REC_ADDR(XFS_INOBT_BLOCK_SIZE(0,cur), xfs_inobt, bb, \
-				i, XFS_INOBT_BLOCK_MAXRECS(0, cur)))
+	(XFS_BTREE_REC_ADDR(xfs_inobt, bb, i))
+
 #define	XFS_INOBT_KEY_ADDR(bb,i,cur) \
-	(XFS_BTREE_KEY_ADDR(XFS_INOBT_BLOCK_SIZE(1,cur), xfs_inobt, bb, \
-				i, XFS_INOBT_BLOCK_MAXRECS(1, cur)))
+	(XFS_BTREE_KEY_ADDR(xfs_inobt, bb, i))
 
 #define	XFS_INOBT_PTR_ADDR(bb,i,cur) \
-	(XFS_BTREE_PTR_ADDR(XFS_INOBT_BLOCK_SIZE(1,cur), xfs_inobt, bb, \
+	(XFS_BTREE_PTR_ADDR(xfs_inobt, bb, \
 				i, XFS_INOBT_BLOCK_MAXRECS(1, cur)))
 
 /*
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 44dfac5..3da9829 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -47,7 +47,6 @@
 #include "xfs_utils.h"
 #include "xfs_dir2_trace.h"
 #include "xfs_quota.h"
-#include "xfs_mac.h"
 #include "xfs_acl.h"
 
 
@@ -1699,8 +1698,7 @@ xfs_itruncate_finish(
 		 * Duplicate the transaction that has the permanent
 		 * reservation and commit the old transaction.
 		 */
-		error = xfs_bmap_finish(tp, &free_list, first_block,
-					&committed);
+		error = xfs_bmap_finish(tp, &free_list, &committed);
 		ntp = *tp;
 		if (error) {
 			/*
@@ -1810,7 +1808,7 @@ xfs_igrow_start(
 	 * and any blocks between the old and new file sizes.
 	 */
 	error = xfs_zero_eof(XFS_ITOV(ip), &ip->i_iocore, new_size,
-			     ip->i_d.di_size, new_size);
+			     ip->i_d.di_size);
 	return error;
 }
 
@@ -2125,7 +2123,7 @@ xfs_iunlink_remove(
 	return 0;
 }
 
-static __inline__ int xfs_inode_clean(xfs_inode_t *ip)
+STATIC_INLINE int xfs_inode_clean(xfs_inode_t *ip)
 {
 	return (((ip->i_itemp == NULL) ||
 		!(ip->i_itemp->ili_format.ilf_fields & XFS_ILOG_ALL)) &&
@@ -2707,10 +2705,24 @@ xfs_idestroy(
 	ktrace_free(ip->i_dir_trace);
 #endif
 	if (ip->i_itemp) {
-		/* XXXdpd should be able to assert this but shutdown
-		 * is leaving the AIL behind. */
-		ASSERT(((ip->i_itemp->ili_item.li_flags & XFS_LI_IN_AIL) == 0) ||
-		       XFS_FORCED_SHUTDOWN(ip->i_mount));
+		/*
+		 * Only if we are shutting down the fs will we see an
+		 * inode still in the AIL. If it is there, we should remove
+		 * it to prevent a use-after-free from occurring.
+		 */
+		xfs_mount_t	*mp = ip->i_mount;
+		xfs_log_item_t	*lip = &ip->i_itemp->ili_item;
+		int		s;
+
+		ASSERT(((lip->li_flags & XFS_LI_IN_AIL) == 0) ||
+				       XFS_FORCED_SHUTDOWN(ip->i_mount));
+		if (lip->li_flags & XFS_LI_IN_AIL) {
+			AIL_LOCK(mp, s);
+			if (lip->li_flags & XFS_LI_IN_AIL)
+				xfs_trans_delete_ail(mp, lip, s);
+			else
+				AIL_UNLOCK(mp, s);
+		}
 		xfs_inode_item_destroy(ip);
 	}
 	kmem_zone_free(xfs_inode_zone, ip);
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index a7a9225..565d470 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -887,7 +887,7 @@ xfs_inode_item_committing(
 /*
  * This is the ops vector shared by all buf log items.
  */
-STATIC struct xfs_item_ops xfs_inode_item_ops = {
+static struct xfs_item_ops xfs_inode_item_ops = {
 	.iop_size	= (uint(*)(xfs_log_item_t*))xfs_inode_item_size,
 	.iop_format	= (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 					xfs_inode_item_format,
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 1965512..cc6a7b5 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -43,8 +43,6 @@
 #include "xfs_itable.h"
 #include "xfs_rw.h"
 #include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
 #include "xfs_attr.h"
 #include "xfs_buf_item.h"
 #include "xfs_trans_space.h"
@@ -542,7 +540,7 @@ xfs_iomap_write_direct(
 	/*
 	 * Complete the transaction
 	 */
-	error = xfs_bmap_finish(&tp, &free_list, firstfsb, &committed);
+	error = xfs_bmap_finish(&tp, &free_list, &committed);
 	if (error)
 		goto error0;
 	error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES, NULL);
@@ -838,8 +836,7 @@ xfs_iomap_write_allocate(
 			if (error)
 				goto trans_cancel;
 
-			error = xfs_bmap_finish(&tp, &free_list,
-					first_block, &committed);
+			error = xfs_bmap_finish(&tp, &free_list, &committed);
 			if (error)
 				goto trans_cancel;
 
@@ -947,8 +944,7 @@ xfs_iomap_write_unwritten(
 		if (error)
 			goto error_on_bmapi_transaction;
 
-		error = xfs_bmap_finish(&(tp), &(free_list),
-				firstfsb, &committed);
+		error = xfs_bmap_finish(&(tp), &(free_list), &committed);
 		if (error)
 			goto error_on_bmapi_transaction;
 
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 3cb678e..ca74d3f 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -1514,7 +1514,6 @@ xlog_recover_reorder_trans(
 {
 	xlog_recover_item_t	*first_item, *itemq, *itemq_next;
 	xfs_buf_log_format_t	*buf_f;
-	xfs_buf_log_format_v1_t	*obuf_f;
 	ushort			flags = 0;
 
 	first_item = itemq = trans->r_itemq;
@@ -1522,29 +1521,16 @@ xlog_recover_reorder_trans(
 	do {
 		itemq_next = itemq->ri_next;
 		buf_f = (xfs_buf_log_format_t *)itemq->ri_buf[0].i_addr;
-		switch (ITEM_TYPE(itemq)) {
-		case XFS_LI_BUF:
-			flags = buf_f->blf_flags;
-			break;
-		case XFS_LI_6_1_BUF:
-		case XFS_LI_5_3_BUF:
-			obuf_f = (xfs_buf_log_format_v1_t*)buf_f;
-			flags = obuf_f->blf_flags;
-			break;
-		}
 
 		switch (ITEM_TYPE(itemq)) {
 		case XFS_LI_BUF:
-		case XFS_LI_6_1_BUF:
-		case XFS_LI_5_3_BUF:
+			flags = buf_f->blf_flags;
 			if (!(flags & XFS_BLI_CANCEL)) {
 				xlog_recover_insert_item_frontq(&trans->r_itemq,
 								itemq);
 				break;
 			}
 		case XFS_LI_INODE:
-		case XFS_LI_6_1_INODE:
-		case XFS_LI_5_3_INODE:
 		case XFS_LI_DQUOT:
 		case XFS_LI_QUOTAOFF:
 		case XFS_LI_EFD:
@@ -1583,7 +1569,6 @@ xlog_recover_do_buffer_pass1(
 	xfs_buf_cancel_t	*nextp;
 	xfs_buf_cancel_t	*prevp;
 	xfs_buf_cancel_t	**bucket;
-	xfs_buf_log_format_v1_t	*obuf_f;
 	xfs_daddr_t		blkno = 0;
 	uint			len = 0;
 	ushort			flags = 0;
@@ -1594,13 +1579,6 @@ xlog_recover_do_buffer_pass1(
 		len = buf_f->blf_len;
 		flags = buf_f->blf_flags;
 		break;
-	case XFS_LI_6_1_BUF:
-	case XFS_LI_5_3_BUF:
-		obuf_f = (xfs_buf_log_format_v1_t*)buf_f;
-		blkno = (xfs_daddr_t) obuf_f->blf_blkno;
-		len = obuf_f->blf_len;
-		flags = obuf_f->blf_flags;
-		break;
 	}
 
 	/*
@@ -1746,7 +1724,6 @@ xlog_recover_do_buffer_pass2(
 	xlog_t			*log,
 	xfs_buf_log_format_t	*buf_f)
 {
-	xfs_buf_log_format_v1_t	*obuf_f;
 	xfs_daddr_t		blkno = 0;
 	ushort			flags = 0;
 	uint			len = 0;
@@ -1757,13 +1734,6 @@ xlog_recover_do_buffer_pass2(
 		flags = buf_f->blf_flags;
 		len = buf_f->blf_len;
 		break;
-	case XFS_LI_6_1_BUF:
-	case XFS_LI_5_3_BUF:
-		obuf_f = (xfs_buf_log_format_v1_t*)buf_f;
-		blkno = (xfs_daddr_t) obuf_f->blf_blkno;
-		flags = obuf_f->blf_flags;
-		len = (xfs_daddr_t) obuf_f->blf_len;
-		break;
 	}
 
 	return xlog_check_buffer_cancelled(log, blkno, len, flags);
@@ -1799,7 +1769,6 @@ xlog_recover_do_inode_buffer(
 	int			inodes_per_buf;
 	xfs_agino_t		*logged_nextp;
 	xfs_agino_t		*buffer_nextp;
-	xfs_buf_log_format_v1_t	*obuf_f;
 	unsigned int		*data_map = NULL;
 	unsigned int		map_size = 0;
 
@@ -1808,12 +1777,6 @@ xlog_recover_do_inode_buffer(
 		data_map = buf_f->blf_data_map;
 		map_size = buf_f->blf_map_size;
 		break;
-	case XFS_LI_6_1_BUF:
-	case XFS_LI_5_3_BUF:
-		obuf_f = (xfs_buf_log_format_v1_t*)buf_f;
-		data_map = obuf_f->blf_data_map;
-		map_size = obuf_f->blf_map_size;
-		break;
 	}
 	/*
 	 * Set the variables corresponding to the current region to
@@ -1912,7 +1875,6 @@ xlog_recover_do_reg_buffer(
 	int			i;
 	int			bit;
 	int			nbits;
-	xfs_buf_log_format_v1_t	*obuf_f;
 	unsigned int		*data_map = NULL;
 	unsigned int		map_size = 0;
 	int                     error;
@@ -1922,12 +1884,6 @@ xlog_recover_do_reg_buffer(
 		data_map = buf_f->blf_data_map;
 		map_size = buf_f->blf_map_size;
 		break;
-	case XFS_LI_6_1_BUF:
-	case XFS_LI_5_3_BUF:
-		obuf_f = (xfs_buf_log_format_v1_t*)buf_f;
-		data_map = obuf_f->blf_data_map;
-		map_size = obuf_f->blf_map_size;
-		break;
 	}
 	bit = 0;
 	i = 1;  /* 0 is the buf format structure */
@@ -2160,7 +2116,6 @@ xlog_recover_do_buffer_trans(
 	int			pass)
 {
 	xfs_buf_log_format_t	*buf_f;
-	xfs_buf_log_format_v1_t	*obuf_f;
 	xfs_mount_t		*mp;
 	xfs_buf_t		*bp;
 	int			error;
@@ -2197,13 +2152,6 @@ xlog_recover_do_buffer_trans(
 		len = buf_f->blf_len;
 		flags = buf_f->blf_flags;
 		break;
-	case XFS_LI_6_1_BUF:
-	case XFS_LI_5_3_BUF:
-		obuf_f = (xfs_buf_log_format_v1_t*)buf_f;
-		blkno = obuf_f->blf_blkno;
-		len = obuf_f->blf_len;
-		flags = obuf_f->blf_flags;
-		break;
 	default:
 		xfs_fs_cmn_err(CE_ALERT, log->l_mp,
 			"xfs_log_recover: unknown buffer type 0x%x, logdev %s",
@@ -2830,9 +2778,7 @@ xlog_recover_do_trans(
 		 * where xfs_daddr_t is 32-bits but mount will warn us
 		 * off a > 1 TB filesystem before we get here.
 		 */
-		if ((ITEM_TYPE(item) == XFS_LI_BUF) ||
-		    (ITEM_TYPE(item) == XFS_LI_6_1_BUF) ||
-		    (ITEM_TYPE(item) == XFS_LI_5_3_BUF)) {
+		if ((ITEM_TYPE(item) == XFS_LI_BUF)) {
 			if  ((error = xlog_recover_do_buffer_trans(log, item,
 								 pass)))
 				break;
@@ -3902,6 +3848,9 @@ xlog_do_recover(
 	ASSERT(XFS_SB_GOOD_VERSION(sbp));
 	xfs_buf_relse(bp);
 
+	/* We've re-read the superblock so re-initialize per-cpu counters */
+	xfs_icsb_reinit_counters(log->l_mp);
+
 	xlog_recover_check_summary(log);
 
 	/* Normal transactions can now occur */
diff --git a/fs/xfs/xfs_mac.h b/fs/xfs/xfs_mac.h
deleted file mode 100644
index 18e0e98..0000000
--- a/fs/xfs/xfs_mac.h
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * Copyright (c) 2001-2002,2005 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_MAC_H__
-#define __XFS_MAC_H__
-
-/*
- * Mandatory Access Control
- *
- * Layout of a composite MAC label:
- * ml_list contains the list of categories (MSEN) followed by the list of
- * divisions (MINT). This is actually a header for the data structure which
- * will have an ml_list with more than one element.
- *
- *      -------------------------------
- *      | ml_msen_type | ml_mint_type |
- *      -------------------------------
- *      | ml_level     | ml_grade     |
- *      -------------------------------
- *      | ml_catcount                 |
- *      -------------------------------
- *      | ml_divcount                 |
- *      -------------------------------
- *      | category 1                  |
- *      | . . .                       |
- *      | category N                  | (where N = ml_catcount)
- *      -------------------------------
- *      | division 1                  |
- *      | . . .                       |
- *      | division M                  | (where M = ml_divcount)
- *      -------------------------------
- */
-#define XFS_MAC_MAX_SETS	250
-typedef struct xfs_mac_label {
-	__uint8_t	ml_msen_type;	/* MSEN label type */
-	__uint8_t	ml_mint_type;	/* MINT label type */
-	__uint8_t	ml_level;	/* Hierarchical level */
-	__uint8_t	ml_grade;	/* Hierarchical grade */
-	__uint16_t	ml_catcount;	/* Category count */
-	__uint16_t	ml_divcount;	/* Division count */
-					/* Category set, then Division set */
-	__uint16_t	ml_list[XFS_MAC_MAX_SETS];
-} xfs_mac_label_t;
-
-/* MSEN label type names. Choose an upper case ASCII character.  */
-#define XFS_MSEN_ADMIN_LABEL	'A'	/* Admin: low<admin != tcsec<high */
-#define XFS_MSEN_EQUAL_LABEL	'E'	/* Wildcard - always equal */
-#define XFS_MSEN_HIGH_LABEL	'H'	/* System High - always dominates */
-#define XFS_MSEN_MLD_HIGH_LABEL	'I'	/* System High, multi-level dir */
-#define XFS_MSEN_LOW_LABEL	'L'	/* System Low - always dominated */
-#define XFS_MSEN_MLD_LABEL	'M'	/* TCSEC label on a multi-level dir */
-#define XFS_MSEN_MLD_LOW_LABEL	'N'	/* System Low, multi-level dir */
-#define XFS_MSEN_TCSEC_LABEL	'T'	/* TCSEC label */
-#define XFS_MSEN_UNKNOWN_LABEL	'U'	/* unknown label */
-
-/* MINT label type names. Choose a lower case ASCII character.  */
-#define XFS_MINT_BIBA_LABEL	'b'	/* Dual of a TCSEC label */
-#define XFS_MINT_EQUAL_LABEL	'e'	/* Wildcard - always equal */
-#define XFS_MINT_HIGH_LABEL	'h'	/* High Grade - always dominates */
-#define XFS_MINT_LOW_LABEL	'l'	/* Low Grade - always dominated */
-
-/* On-disk XFS extended attribute names */
-#define SGI_MAC_FILE	"SGI_MAC_FILE"
-#define SGI_MAC_FILE_SIZE	(sizeof(SGI_MAC_FILE)-1)
-
-
-#ifdef __KERNEL__
-
-#ifdef CONFIG_FS_POSIX_MAC
-
-/* NOT YET IMPLEMENTED */
-
-#define MACEXEC		00100
-#define MACWRITE	00200
-#define MACREAD		00400
-
-struct xfs_inode;
-extern int  xfs_mac_iaccess(struct xfs_inode *, mode_t, cred_t *);
-
-#define _MAC_XFS_IACCESS(i,m,c) (xfs_mac_iaccess(i,m,c))
-#define _MAC_VACCESS(v,c,m)	(xfs_mac_vaccess(v,c,m))
-#define _MAC_EXISTS		xfs_mac_vhaslabel
-
-#else
-#define _MAC_XFS_IACCESS(i,m,c)	(0)
-#define _MAC_VACCESS(v,c,m)	(0)
-#define _MAC_EXISTS		(NULL)
-#endif
-
-#endif	/* __KERNEL__ */
-
-#endif	/* __XFS_MAC_H__ */
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 9dfae18..3bed0cf0 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -52,21 +52,19 @@ STATIC void	xfs_unmountfs_wait(xfs_mount_t *);
 
 #ifdef HAVE_PERCPU_SB
 STATIC void	xfs_icsb_destroy_counters(xfs_mount_t *);
-STATIC void	xfs_icsb_balance_counter(xfs_mount_t *, xfs_sb_field_t, int);
+STATIC void	xfs_icsb_balance_counter(xfs_mount_t *, xfs_sb_field_t,
+						int, int);
 STATIC void	xfs_icsb_sync_counters(xfs_mount_t *);
 STATIC int	xfs_icsb_modify_counters(xfs_mount_t *, xfs_sb_field_t,
-						int, int);
-STATIC int	xfs_icsb_modify_counters_locked(xfs_mount_t *, xfs_sb_field_t,
-						int, int);
+						int64_t, int);
 STATIC int	xfs_icsb_disable_counter(xfs_mount_t *, xfs_sb_field_t);
 
 #else
 
 #define xfs_icsb_destroy_counters(mp)			do { } while (0)
-#define xfs_icsb_balance_counter(mp, a, b)		do { } while (0)
+#define xfs_icsb_balance_counter(mp, a, b, c)		do { } while (0)
 #define xfs_icsb_sync_counters(mp)			do { } while (0)
 #define xfs_icsb_modify_counters(mp, a, b, c)		do { } while (0)
-#define xfs_icsb_modify_counters_locked(mp, a, b, c)	do { } while (0)
 
 #endif
 
@@ -545,9 +543,8 @@ xfs_readsb(xfs_mount_t *mp, int flags)
 		ASSERT(XFS_BUF_VALUSEMA(bp) <= 0);
 	}
 
-	xfs_icsb_balance_counter(mp, XFS_SBS_ICOUNT, 0);
-	xfs_icsb_balance_counter(mp, XFS_SBS_IFREE, 0);
-	xfs_icsb_balance_counter(mp, XFS_SBS_FDBLOCKS, 0);
+	/* Initialize per-cpu counters */
+	xfs_icsb_reinit_counters(mp);
 
 	mp->m_sb_bp = bp;
 	xfs_buf_relse(bp);
@@ -1254,8 +1251,11 @@ xfs_mod_sb(xfs_trans_t *tp, __int64_t fields)
  * The SB_LOCK must be held when this routine is called.
  */
 int
-xfs_mod_incore_sb_unlocked(xfs_mount_t *mp, xfs_sb_field_t field,
-			int delta, int rsvd)
+xfs_mod_incore_sb_unlocked(
+	xfs_mount_t	*mp,
+	xfs_sb_field_t	field,
+	int64_t		delta,
+	int		rsvd)
 {
 	int		scounter;	/* short counter for 32 bit fields */
 	long long	lcounter;	/* long counter for 64 bit fields */
@@ -1287,7 +1287,6 @@ xfs_mod_incore_sb_unlocked(xfs_mount_t *mp, xfs_sb_field_t field,
 		mp->m_sb.sb_ifree = lcounter;
 		return 0;
 	case XFS_SBS_FDBLOCKS:
-
 		lcounter = (long long)
 			mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
 		res_used = (long long)(mp->m_resblks - mp->m_resblks_avail);
@@ -1418,7 +1417,11 @@ xfs_mod_incore_sb_unlocked(xfs_mount_t *mp, xfs_sb_field_t field,
  * routine to do the work.
  */
 int
-xfs_mod_incore_sb(xfs_mount_t *mp, xfs_sb_field_t field, int delta, int rsvd)
+xfs_mod_incore_sb(
+	xfs_mount_t	*mp,
+	xfs_sb_field_t	field,
+	int64_t		delta,
+	int		rsvd)
 {
 	unsigned long	s;
 	int	status;
@@ -1485,9 +1488,11 @@ xfs_mod_incore_sb_batch(xfs_mount_t *mp, xfs_mod_sb_t *msb, uint nmsb, int rsvd)
 		case XFS_SBS_IFREE:
 		case XFS_SBS_FDBLOCKS:
 			if (!(mp->m_flags & XFS_MOUNT_NO_PERCPU_SB)) {
-				status = xfs_icsb_modify_counters_locked(mp,
+				XFS_SB_UNLOCK(mp, s);
+				status = xfs_icsb_modify_counters(mp,
 							msbp->msb_field,
 							msbp->msb_delta, rsvd);
+				s = XFS_SB_LOCK(mp);
 				break;
 			}
 			/* FALLTHROUGH */
@@ -1521,11 +1526,12 @@ xfs_mod_incore_sb_batch(xfs_mount_t *mp, xfs_mod_sb_t *msb, uint nmsb, int rsvd)
 			case XFS_SBS_IFREE:
 			case XFS_SBS_FDBLOCKS:
 				if (!(mp->m_flags & XFS_MOUNT_NO_PERCPU_SB)) {
-					status =
-					    xfs_icsb_modify_counters_locked(mp,
+					XFS_SB_UNLOCK(mp, s);
+					status = xfs_icsb_modify_counters(mp,
 							msbp->msb_field,
 							-(msbp->msb_delta),
 							rsvd);
+					s = XFS_SB_LOCK(mp);
 					break;
 				}
 				/* FALLTHROUGH */
@@ -1733,14 +1739,17 @@ xfs_icsb_cpu_notify(
 		memset(cntp, 0, sizeof(xfs_icsb_cnts_t));
 		break;
 	case CPU_ONLINE:
-		xfs_icsb_balance_counter(mp, XFS_SBS_ICOUNT, 0);
-		xfs_icsb_balance_counter(mp, XFS_SBS_IFREE, 0);
-		xfs_icsb_balance_counter(mp, XFS_SBS_FDBLOCKS, 0);
+		xfs_icsb_lock(mp);
+		xfs_icsb_balance_counter(mp, XFS_SBS_ICOUNT, 0, 0);
+		xfs_icsb_balance_counter(mp, XFS_SBS_IFREE, 0, 0);
+		xfs_icsb_balance_counter(mp, XFS_SBS_FDBLOCKS, 0, 0);
+		xfs_icsb_unlock(mp);
 		break;
 	case CPU_DEAD:
 		/* Disable all the counters, then fold the dead cpu's
 		 * count into the total on the global superblock and
 		 * re-enable the counters. */
+		xfs_icsb_lock(mp);
 		s = XFS_SB_LOCK(mp);
 		xfs_icsb_disable_counter(mp, XFS_SBS_ICOUNT);
 		xfs_icsb_disable_counter(mp, XFS_SBS_IFREE);
@@ -1752,10 +1761,14 @@ xfs_icsb_cpu_notify(
 
 		memset(cntp, 0, sizeof(xfs_icsb_cnts_t));
 
-		xfs_icsb_balance_counter(mp, XFS_SBS_ICOUNT, XFS_ICSB_SB_LOCKED);
-		xfs_icsb_balance_counter(mp, XFS_SBS_IFREE, XFS_ICSB_SB_LOCKED);
-		xfs_icsb_balance_counter(mp, XFS_SBS_FDBLOCKS, XFS_ICSB_SB_LOCKED);
+		xfs_icsb_balance_counter(mp, XFS_SBS_ICOUNT,
+					 XFS_ICSB_SB_LOCKED, 0);
+		xfs_icsb_balance_counter(mp, XFS_SBS_IFREE,
+					 XFS_ICSB_SB_LOCKED, 0);
+		xfs_icsb_balance_counter(mp, XFS_SBS_FDBLOCKS,
+					 XFS_ICSB_SB_LOCKED, 0);
 		XFS_SB_UNLOCK(mp, s);
+		xfs_icsb_unlock(mp);
 		break;
 	}
 
@@ -1784,6 +1797,9 @@ xfs_icsb_init_counters(
 		cntp = (xfs_icsb_cnts_t *)per_cpu_ptr(mp->m_sb_cnts, i);
 		memset(cntp, 0, sizeof(xfs_icsb_cnts_t));
 	}
+
+	mutex_init(&mp->m_icsb_mutex);
+
 	/*
 	 * start with all counters disabled so that the
 	 * initial balance kicks us off correctly
@@ -1792,6 +1808,22 @@ xfs_icsb_init_counters(
 	return 0;
 }
 
+void
+xfs_icsb_reinit_counters(
+	xfs_mount_t	*mp)
+{
+	xfs_icsb_lock(mp);
+	/*
+	 * start with all counters disabled so that the
+	 * initial balance kicks us off correctly
+	 */
+	mp->m_icsb_counters = -1;
+	xfs_icsb_balance_counter(mp, XFS_SBS_ICOUNT, 0, 0);
+	xfs_icsb_balance_counter(mp, XFS_SBS_IFREE, 0, 0);
+	xfs_icsb_balance_counter(mp, XFS_SBS_FDBLOCKS, 0, 0);
+	xfs_icsb_unlock(mp);
+}
+
 STATIC void
 xfs_icsb_destroy_counters(
 	xfs_mount_t	*mp)
@@ -1800,9 +1832,10 @@ xfs_icsb_destroy_counters(
 		unregister_hotcpu_notifier(&mp->m_icsb_notifier);
 		free_percpu(mp->m_sb_cnts);
 	}
+	mutex_destroy(&mp->m_icsb_mutex);
 }
 
-STATIC inline void
+STATIC_INLINE void
 xfs_icsb_lock_cntr(
 	xfs_icsb_cnts_t	*icsbp)
 {
@@ -1811,7 +1844,7 @@ xfs_icsb_lock_cntr(
 	}
 }
 
-STATIC inline void
+STATIC_INLINE void
 xfs_icsb_unlock_cntr(
 	xfs_icsb_cnts_t	*icsbp)
 {
@@ -1819,7 +1852,7 @@ xfs_icsb_unlock_cntr(
 }
 
 
-STATIC inline void
+STATIC_INLINE void
 xfs_icsb_lock_all_counters(
 	xfs_mount_t	*mp)
 {
@@ -1832,7 +1865,7 @@ xfs_icsb_lock_all_counters(
 	}
 }
 
-STATIC inline void
+STATIC_INLINE void
 xfs_icsb_unlock_all_counters(
 	xfs_mount_t	*mp)
 {
@@ -1888,6 +1921,17 @@ xfs_icsb_disable_counter(
 
 	ASSERT((field >= XFS_SBS_ICOUNT) && (field <= XFS_SBS_FDBLOCKS));
 
+	/*
+	 * If we are already disabled, then there is nothing to do
+	 * here. We check before locking all the counters to avoid
+	 * the expensive lock operation when being called in the
+	 * slow path and the counter is already disabled. This is
+	 * safe because the only time we set or clear this state is under
+	 * the m_icsb_mutex.
+	 */
+	if (xfs_icsb_counter_disabled(mp, field))
+		return 0;
+
 	xfs_icsb_lock_all_counters(mp);
 	if (!test_and_set_bit(field, &mp->m_icsb_counters)) {
 		/* drain back to superblock */
@@ -1948,8 +1992,8 @@ xfs_icsb_enable_counter(
 	xfs_icsb_unlock_all_counters(mp);
 }
 
-STATIC void
-xfs_icsb_sync_counters_int(
+void
+xfs_icsb_sync_counters_flags(
 	xfs_mount_t	*mp,
 	int		flags)
 {
@@ -1981,40 +2025,39 @@ STATIC void
 xfs_icsb_sync_counters(
 	xfs_mount_t	*mp)
 {
-	xfs_icsb_sync_counters_int(mp, 0);
-}
-
-/*
- * lazy addition used for things like df, background sb syncs, etc
- */
-void
-xfs_icsb_sync_counters_lazy(
-	xfs_mount_t	*mp)
-{
-	xfs_icsb_sync_counters_int(mp, XFS_ICSB_LAZY_COUNT);
+	xfs_icsb_sync_counters_flags(mp, 0);
 }
 
 /*
  * Balance and enable/disable counters as necessary.
  *
- * Thresholds for re-enabling counters are somewhat magic.
- * inode counts are chosen to be the same number as single
- * on disk allocation chunk per CPU, and free blocks is
- * something far enough zero that we aren't going thrash
- * when we get near ENOSPC.
+ * Thresholds for re-enabling counters are somewhat magic.  inode counts are
+ * chosen to be the same number as single on disk allocation chunk per CPU, and
+ * free blocks is something far enough zero that we aren't going thrash when we
+ * get near ENOSPC. We also need to supply a minimum we require per cpu to
+ * prevent looping endlessly when xfs_alloc_space asks for more than will
+ * be distributed to a single CPU but each CPU has enough blocks to be
+ * reenabled.
+ *
+ * Note that we can be called when counters are already disabled.
+ * xfs_icsb_disable_counter() optimises the counter locking in this case to
+ * prevent locking every per-cpu counter needlessly.
  */
-#define XFS_ICSB_INO_CNTR_REENABLE	64
+
+#define XFS_ICSB_INO_CNTR_REENABLE	(uint64_t)64
 #define XFS_ICSB_FDBLK_CNTR_REENABLE(mp) \
-		(512 + XFS_ALLOC_SET_ASIDE(mp))
+		(uint64_t)(512 + XFS_ALLOC_SET_ASIDE(mp))
 STATIC void
 xfs_icsb_balance_counter(
 	xfs_mount_t	*mp,
 	xfs_sb_field_t  field,
-	int		flags)
+	int		flags,
+	int		min_per_cpu)
 {
 	uint64_t	count, resid;
 	int		weight = num_online_cpus();
 	int		s;
+	uint64_t	min = (uint64_t)min_per_cpu;
 
 	if (!(flags & XFS_ICSB_SB_LOCKED))
 		s = XFS_SB_LOCK(mp);
@@ -2027,19 +2070,19 @@ xfs_icsb_balance_counter(
 	case XFS_SBS_ICOUNT:
 		count = mp->m_sb.sb_icount;
 		resid = do_div(count, weight);
-		if (count < XFS_ICSB_INO_CNTR_REENABLE)
+		if (count < max(min, XFS_ICSB_INO_CNTR_REENABLE))
 			goto out;
 		break;
 	case XFS_SBS_IFREE:
 		count = mp->m_sb.sb_ifree;
 		resid = do_div(count, weight);
-		if (count < XFS_ICSB_INO_CNTR_REENABLE)
+		if (count < max(min, XFS_ICSB_INO_CNTR_REENABLE))
 			goto out;
 		break;
 	case XFS_SBS_FDBLOCKS:
 		count = mp->m_sb.sb_fdblocks;
 		resid = do_div(count, weight);
-		if (count < XFS_ICSB_FDBLK_CNTR_REENABLE(mp))
+		if (count < max(min, XFS_ICSB_FDBLK_CNTR_REENABLE(mp)))
 			goto out;
 		break;
 	default:
@@ -2054,32 +2097,39 @@ out:
 		XFS_SB_UNLOCK(mp, s);
 }
 
-STATIC int
-xfs_icsb_modify_counters_int(
+int
+xfs_icsb_modify_counters(
 	xfs_mount_t	*mp,
 	xfs_sb_field_t	field,
-	int		delta,
-	int		rsvd,
-	int		flags)
+	int64_t		delta,
+	int		rsvd)
 {
 	xfs_icsb_cnts_t	*icsbp;
 	long long	lcounter;	/* long counter for 64 bit fields */
-	int		cpu, s, locked = 0;
-	int		ret = 0, balance_done = 0;
+	int		cpu, ret = 0, s;
 
+	might_sleep();
 again:
 	cpu = get_cpu();
-	icsbp = (xfs_icsb_cnts_t *)per_cpu_ptr(mp->m_sb_cnts, cpu),
-	xfs_icsb_lock_cntr(icsbp);
+	icsbp = (xfs_icsb_cnts_t *)per_cpu_ptr(mp->m_sb_cnts, cpu);
+
+	/*
+	 * if the counter is disabled, go to slow path
+	 */
 	if (unlikely(xfs_icsb_counter_disabled(mp, field)))
 		goto slow_path;
+	xfs_icsb_lock_cntr(icsbp);
+	if (unlikely(xfs_icsb_counter_disabled(mp, field))) {
+		xfs_icsb_unlock_cntr(icsbp);
+		goto slow_path;
+	}
 
 	switch (field) {
 	case XFS_SBS_ICOUNT:
 		lcounter = icsbp->icsb_icount;
 		lcounter += delta;
 		if (unlikely(lcounter < 0))
-			goto slow_path;
+			goto balance_counter;
 		icsbp->icsb_icount = lcounter;
 		break;
 
@@ -2087,7 +2137,7 @@ again:
 		lcounter = icsbp->icsb_ifree;
 		lcounter += delta;
 		if (unlikely(lcounter < 0))
-			goto slow_path;
+			goto balance_counter;
 		icsbp->icsb_ifree = lcounter;
 		break;
 
@@ -2097,7 +2147,7 @@ again:
 		lcounter = icsbp->icsb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
 		lcounter += delta;
 		if (unlikely(lcounter < 0))
-			goto slow_path;
+			goto balance_counter;
 		icsbp->icsb_fdblocks = lcounter + XFS_ALLOC_SET_ASIDE(mp);
 		break;
 	default:
@@ -2106,72 +2156,78 @@ again:
 	}
 	xfs_icsb_unlock_cntr(icsbp);
 	put_cpu();
-	if (locked)
-		XFS_SB_UNLOCK(mp, s);
 	return 0;
 
-	/*
-	 * The slow path needs to be run with the SBLOCK
-	 * held so that we prevent other threads from
-	 * attempting to run this path at the same time.
-	 * this provides exclusion for the balancing code,
-	 * and exclusive fallback if the balance does not
-	 * provide enough resources to continue in an unlocked
-	 * manner.
-	 */
 slow_path:
-	xfs_icsb_unlock_cntr(icsbp);
 	put_cpu();
 
-	/* need to hold superblock incase we need
-	 * to disable a counter */
-	if (!(flags & XFS_ICSB_SB_LOCKED)) {
-		s = XFS_SB_LOCK(mp);
-		locked = 1;
-		flags |= XFS_ICSB_SB_LOCKED;
-	}
-	if (!balance_done) {
-		xfs_icsb_balance_counter(mp, field, flags);
-		balance_done = 1;
+	/*
+	 * serialise with a mutex so we don't burn lots of cpu on
+	 * the superblock lock. We still need to hold the superblock
+	 * lock, however, when we modify the global structures.
+	 */
+	xfs_icsb_lock(mp);
+
+	/*
+	 * Now running atomically.
+	 *
+	 * If the counter is enabled, someone has beaten us to rebalancing.
+	 * Drop the lock and try again in the fast path....
+	 */
+	if (!(xfs_icsb_counter_disabled(mp, field))) {
+		xfs_icsb_unlock(mp);
 		goto again;
-	} else {
-		/*
-		 * we might not have enough on this local
-		 * cpu to allocate for a bulk request.
-		 * We need to drain this field from all CPUs
-		 * and disable the counter fastpath
-		 */
-		xfs_icsb_disable_counter(mp, field);
 	}
 
+	/*
+	 * The counter is currently disabled. Because we are
+	 * running atomically here, we know a rebalance cannot
+	 * be in progress. Hence we can go straight to operating
+	 * on the global superblock. We do not call xfs_mod_incore_sb()
+	 * here even though we need to get the SB_LOCK. Doing so
+	 * will cause us to re-enter this function and deadlock.
+	 * Hence we get the SB_LOCK ourselves and then call
+	 * xfs_mod_incore_sb_unlocked() as the unlocked path operates
+	 * directly on the global counters.
+	 */
+	s = XFS_SB_LOCK(mp);
 	ret = xfs_mod_incore_sb_unlocked(mp, field, delta, rsvd);
+	XFS_SB_UNLOCK(mp, s);
 
-	if (locked)
-		XFS_SB_UNLOCK(mp, s);
+	/*
+	 * Now that we've modified the global superblock, we
+	 * may be able to re-enable the distributed counters
+	 * (e.g. lots of space just got freed). After that
+	 * we are done.
+	 */
+	if (ret != ENOSPC)
+		xfs_icsb_balance_counter(mp, field, 0, 0);
+	xfs_icsb_unlock(mp);
 	return ret;
-}
 
-STATIC int
-xfs_icsb_modify_counters(
-	xfs_mount_t	*mp,
-	xfs_sb_field_t	field,
-	int		delta,
-	int		rsvd)
-{
-	return xfs_icsb_modify_counters_int(mp, field, delta, rsvd, 0);
-}
+balance_counter:
+	xfs_icsb_unlock_cntr(icsbp);
+	put_cpu();
 
-/*
- * Called when superblock is already locked
- */
-STATIC int
-xfs_icsb_modify_counters_locked(
-	xfs_mount_t	*mp,
-	xfs_sb_field_t	field,
-	int		delta,
-	int		rsvd)
-{
-	return xfs_icsb_modify_counters_int(mp, field, delta,
-						rsvd, XFS_ICSB_SB_LOCKED);
+	/*
+	 * We may have multiple threads here if multiple per-cpu
+	 * counters run dry at the same time. This will mean we can
+	 * do more balances than strictly necessary but it is not
+	 * the common slowpath case.
+	 */
+	xfs_icsb_lock(mp);
+
+	/*
+	 * running atomically.
+	 *
+	 * This will leave the counter in the correct state for future
+	 * accesses. After the rebalance, we simply try again and our retry
+	 * will either succeed through the fast path or slow path without
+	 * another balance operation being required.
+	 */
+	xfs_icsb_balance_counter(mp, field, 0, delta);
+	xfs_icsb_unlock(mp);
+	goto again;
 }
+
 #endif
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index e5f396f..82304b9 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -18,6 +18,7 @@
 #ifndef __XFS_MOUNT_H__
 #define	__XFS_MOUNT_H__
 
+
 typedef struct xfs_trans_reservations {
 	uint	tr_write;	/* extent alloc trans */
 	uint	tr_itruncate;	/* truncate trans */
@@ -306,11 +307,13 @@ typedef struct xfs_icsb_cnts {
 #define XFS_ICSB_LAZY_COUNT	(1 << 1)	/* accuracy not needed */
 
 extern int	xfs_icsb_init_counters(struct xfs_mount *);
-extern void	xfs_icsb_sync_counters_lazy(struct xfs_mount *);
+extern void	xfs_icsb_reinit_counters(struct xfs_mount *);
+extern void	xfs_icsb_sync_counters_flags(struct xfs_mount *, int);
 
 #else
 #define xfs_icsb_init_counters(mp)	(0)
-#define xfs_icsb_sync_counters_lazy(mp)	do { } while (0)
+#define xfs_icsb_reinit_counters(mp)	do { } while (0)
+#define xfs_icsb_sync_counters_flags(mp, flags)	do { } while (0)
 #endif
 
 typedef struct xfs_mount {
@@ -419,6 +422,7 @@ typedef struct xfs_mount {
 	xfs_icsb_cnts_t		*m_sb_cnts;	/* per-cpu superblock counters */
 	unsigned long		m_icsb_counters; /* disabled per-cpu counters */
 	struct notifier_block	m_icsb_notifier; /* hotplug cpu notifier */
+	struct mutex		m_icsb_mutex;	/* balancer sync lock */
 #endif
 } xfs_mount_t;
 
@@ -563,11 +567,32 @@ xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
 }
 
 /*
+ * Per-cpu superblock locking functions
+ */
+#ifdef HAVE_PERCPU_SB
+STATIC_INLINE void
+xfs_icsb_lock(xfs_mount_t *mp)
+{
+	mutex_lock(&mp->m_icsb_mutex);
+}
+
+STATIC_INLINE void
+xfs_icsb_unlock(xfs_mount_t *mp)
+{
+	mutex_unlock(&mp->m_icsb_mutex);
+}
+#else
+#define xfs_icsb_lock(mp)
+#define xfs_icsb_unlock(mp)
+#endif
+
+/*
  * This structure is for use by the xfs_mod_incore_sb_batch() routine.
+ * xfs_growfs can specify a few fields which are more than int limit
  */
 typedef struct xfs_mod_sb {
 	xfs_sb_field_t	msb_field;	/* Field to modify, see below */
-	int		msb_delta;	/* Change to make to specified field */
+	int64_t		msb_delta;	/* Change to make to specified field */
 } xfs_mod_sb_t;
 
 #define	XFS_MOUNT_ILOCK(mp)	mutex_lock(&((mp)->m_ilock))
@@ -585,17 +610,17 @@ extern int	xfs_unmountfs(xfs_mount_t *, struct cred *);
 extern void	xfs_unmountfs_close(xfs_mount_t *, struct cred *);
 extern int	xfs_unmountfs_writesb(xfs_mount_t *);
 extern int	xfs_unmount_flush(xfs_mount_t *, int);
-extern int	xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int);
+extern int	xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
 extern int	xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
-			int, int);
+			int64_t, int);
 extern int	xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
 			uint, int);
 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
 extern int	xfs_readsb(xfs_mount_t *, int);
 extern void	xfs_freesb(xfs_mount_t *);
 extern void	xfs_do_force_shutdown(bhv_desc_t *, int, char *, int);
-extern int	xfs_syncsub(xfs_mount_t *, int, int, int *);
-extern int	xfs_sync_inodes(xfs_mount_t *, int, int, int *);
+extern int	xfs_syncsub(xfs_mount_t *, int, int *);
+extern int	xfs_sync_inodes(xfs_mount_t *, int, int *);
 extern xfs_agnumber_t	xfs_initialize_perag(struct bhv_vfs *, xfs_mount_t *,
 						xfs_agnumber_t);
 extern void	xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t);
diff --git a/fs/xfs/xfs_rename.c b/fs/xfs/xfs_rename.c
index d98171d..4c6573d 100644
--- a/fs/xfs/xfs_rename.c
+++ b/fs/xfs/xfs_rename.c
@@ -565,7 +565,7 @@ xfs_rename(
 		IHOLD(target_ip);
 	IHOLD(src_ip);
 
-	error = xfs_bmap_finish(&tp, &free_list, first_block, &committed);
+	error = xfs_bmap_finish(&tp, &free_list, &committed);
 	if (error) {
 		xfs_bmap_cancel(&free_list);
 		xfs_trans_cancel(tp, (XFS_TRANS_RELEASE_LOG_RES |
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 880c732..6fff19d 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -147,7 +147,7 @@ xfs_growfs_rt_alloc(
 		/*
 		 * Free any blocks freed up in the transaction, then commit.
 		 */
-		error = xfs_bmap_finish(&tp, &flist, firstblock, &committed);
+		error = xfs_bmap_finish(&tp, &flist, &committed);
 		if (error)
 			goto error_exit;
 		xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES, NULL);
@@ -913,57 +913,6 @@ xfs_rtcheck_alloc_range(
 }
 #endif
 
-#ifdef DEBUG
-/*
- * Check whether the given block in the bitmap has the given value.
- */
-STATIC int				/* 1 for matches, 0 for not */
-xfs_rtcheck_bit(
-	xfs_mount_t	*mp,		/* file system mount structure */
-	xfs_trans_t	*tp,		/* transaction pointer */
-	xfs_rtblock_t	start,		/* bit (block) to check */
-	int		val)		/* 1 for free, 0 for allocated */
-{
-	int		bit;		/* bit number in the word */
-	xfs_rtblock_t	block;		/* bitmap block number */
-	xfs_buf_t	*bp;		/* buf for the block */
-	xfs_rtword_t	*bufp;		/* pointer into the buffer */
-	/* REFERENCED */
-	int		error;		/* error value */
-	xfs_rtword_t	wdiff;		/* difference between bit & expected */
-	int		word;		/* word number in the buffer */
-	xfs_rtword_t	wval;		/* word value from buffer */
-
-	block = XFS_BITTOBLOCK(mp, start);
-	error = xfs_rtbuf_get(mp, tp, block, 0, &bp);
-	bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
-	word = XFS_BITTOWORD(mp, start);
-	bit = (int)(start & (XFS_NBWORD - 1));
-	wval = bufp[word];
-	xfs_trans_brelse(tp, bp);
-	wdiff = (wval ^ -val) & ((xfs_rtword_t)1 << bit);
-	return !wdiff;
-}
-#endif	/* DEBUG */
-
-#if 0
-/*
- * Check that the given extent (block range) is free already.
- */
-STATIC int				/* error */
-xfs_rtcheck_free_range(
-	xfs_mount_t	*mp,		/* file system mount point */
-	xfs_trans_t	*tp,		/* transaction pointer */
-	xfs_rtblock_t	bno,		/* starting block number of extent */
-	xfs_extlen_t	len,		/* length of extent */
-	int		*stat)		/* out: 1 for free, 0 for not */
-{
-	xfs_rtblock_t	new;		/* dummy for xfs_rtcheck_range */
-
-	return xfs_rtcheck_range(mp, tp, bno, len, 1, &new, stat);
-}
-#endif
-
 /*
  * Check that the given range is either all allocated (val = 0) or
  * all free (val = 1).
@@ -2382,60 +2331,3 @@ xfs_rtpick_extent(
 	*pick = b;
 	return 0;
 }
-
-#ifdef DEBUG
-/*
- * Debug code: print out the value of a range in the bitmap.
- */
-void
-xfs_rtprint_range(
-	xfs_mount_t	*mp,		/* file system mount structure */
-	xfs_trans_t	*tp,		/* transaction pointer */
-	xfs_rtblock_t	start,		/* starting block to print */
-	xfs_extlen_t	len)		/* length to print */
-{
-	xfs_extlen_t	i;		/* block number in the extent */
-
-	cmn_err(CE_DEBUG, "%Ld: ", (long long)start);
-	for (i = 0; i < len; i++)
-		cmn_err(CE_DEBUG, "%d", xfs_rtcheck_bit(mp, tp, start + i, 1));
-	cmn_err(CE_DEBUG, "\n");
-}
-
-/*
- * Debug code: print the summary file.
- */
-void
-xfs_rtprint_summary(
-	xfs_mount_t	*mp,		/* file system mount structure */
-	xfs_trans_t	*tp)		/* transaction pointer */
-{
-	xfs_suminfo_t	c;		/* summary data */
-	xfs_rtblock_t	i;		/* bitmap block number */
-	int		l;		/* summary information level */
-	int		p;		/* flag for printed anything */
-	xfs_fsblock_t	sb;		/* summary block number */
-	xfs_buf_t	*sumbp;		/* summary block buffer */
-
-	sumbp = NULL;
-	for (l = 0; l < mp->m_rsumlevels; l++) {
-		for (p = 0, i = 0; i < mp->m_sb.sb_rbmblocks; i++) {
-			(void)xfs_rtget_summary(mp, tp, l, i, &sumbp, &sb, &c);
-			if (c) {
-				if (!p) {
-					cmn_err(CE_DEBUG, "%Ld-%Ld:", 1LL << l,
-						XFS_RTMIN((1LL << l) +
-							  ((1LL << l) - 1LL),
-							 mp->m_sb.sb_rextents));
-					p = 1;
-				}
-				cmn_err(CE_DEBUG, " %Ld:%d", (long long)i, c);
-			}
-		}
-		if (p)
-			cmn_err(CE_DEBUG, "\n");
-	}
-	if (sumbp)
-		xfs_trans_brelse(tp, sumbp);
-}
-#endif	/* DEBUG */
diff --git a/fs/xfs/xfs_rtalloc.h b/fs/xfs/xfs_rtalloc.h
index 0e0b4d2..799c1f8 100644
--- a/fs/xfs/xfs_rtalloc.h
+++ b/fs/xfs/xfs_rtalloc.h
@@ -134,24 +134,6 @@ xfs_rtpick_extent(
 	xfs_rtblock_t		*pick);	/* result rt extent */
 
 /*
- * Debug code: print out the value of a range in the bitmap.
- */
-void
-xfs_rtprint_range(
-	struct xfs_mount	*mp,	/* file system mount structure */
-	struct xfs_trans	*tp,	/* transaction pointer */
-	xfs_rtblock_t		start,	/* starting block to print */
-	xfs_extlen_t		len);	/* length to print */
-
-/*
- * Debug code: print the summary file.
- */
-void
-xfs_rtprint_summary(
-	struct xfs_mount	*mp,	/* file system mount structure */
-	struct xfs_trans	*tp);	/* transaction pointer */
-
-/*
  * Grow the realtime area of the filesystem.
  */
 int
diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c
index defb2fe..1ea7c0c 100644
--- a/fs/xfs/xfs_rw.c
+++ b/fs/xfs/xfs_rw.c
@@ -42,7 +42,6 @@
 #include "xfs_attr.h"
 #include "xfs_bmap.h"
 #include "xfs_acl.h"
-#include "xfs_mac.h"
 #include "xfs_error.h"
 #include "xfs_buf_item.h"
 #include "xfs_rw.h"
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index ee2721e..301ff94 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -339,7 +339,7 @@ xfs_trans_reserve(
 	 */
 	if (blocks > 0) {
 		error = xfs_mod_incore_sb(tp->t_mountp, XFS_SBS_FDBLOCKS,
-					  -blocks, rsvd);
+					  -((int64_t)blocks), rsvd);
 		if (error != 0) {
 			current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS);
 			return (XFS_ERROR(ENOSPC));
@@ -380,7 +380,7 @@ xfs_trans_reserve(
 	 */
 	if (rtextents > 0) {
 		error = xfs_mod_incore_sb(tp->t_mountp, XFS_SBS_FREXTENTS,
-					  -rtextents, rsvd);
+					  -((int64_t)rtextents), rsvd);
 		if (error) {
 			error = XFS_ERROR(ENOSPC);
 			goto undo_log;
@@ -410,7 +410,7 @@ undo_log:
 undo_blocks:
 	if (blocks > 0) {
 		(void) xfs_mod_incore_sb(tp->t_mountp, XFS_SBS_FDBLOCKS,
-					 blocks, rsvd);
+					 (int64_t)blocks, rsvd);
 		tp->t_blk_res = 0;
 	}
 
@@ -432,7 +432,7 @@ void
 xfs_trans_mod_sb(
 	xfs_trans_t	*tp,
 	uint		field,
-	long		delta)
+	int64_t		delta)
 {
 
 	switch (field) {
@@ -663,62 +663,62 @@ xfs_trans_unreserve_and_mod_sb(
 	if (tp->t_flags & XFS_TRANS_SB_DIRTY) {
 		if (tp->t_icount_delta != 0) {
 			msbp->msb_field = XFS_SBS_ICOUNT;
-			msbp->msb_delta = (int)tp->t_icount_delta;
+			msbp->msb_delta = tp->t_icount_delta;
 			msbp++;
 		}
 		if (tp->t_ifree_delta != 0) {
 			msbp->msb_field = XFS_SBS_IFREE;
-			msbp->msb_delta = (int)tp->t_ifree_delta;
+			msbp->msb_delta = tp->t_ifree_delta;
 			msbp++;
 		}
 		if (tp->t_fdblocks_delta != 0) {
 			msbp->msb_field = XFS_SBS_FDBLOCKS;
-			msbp->msb_delta = (int)tp->t_fdblocks_delta;
+			msbp->msb_delta = tp->t_fdblocks_delta;
 			msbp++;
 		}
 		if (tp->t_frextents_delta != 0) {
 			msbp->msb_field = XFS_SBS_FREXTENTS;
-			msbp->msb_delta = (int)tp->t_frextents_delta;
+			msbp->msb_delta = tp->t_frextents_delta;
 			msbp++;
 		}
 		if (tp->t_dblocks_delta != 0) {
 			msbp->msb_field = XFS_SBS_DBLOCKS;
-			msbp->msb_delta = (int)tp->t_dblocks_delta;
+			msbp->msb_delta = tp->t_dblocks_delta;
 			msbp++;
 		}
 		if (tp->t_agcount_delta != 0) {
 			msbp->msb_field = XFS_SBS_AGCOUNT;
-			msbp->msb_delta = (int)tp->t_agcount_delta;
+			msbp->msb_delta = tp->t_agcount_delta;
 			msbp++;
 		}
 		if (tp->t_imaxpct_delta != 0) {
 			msbp->msb_field = XFS_SBS_IMAX_PCT;
-			msbp->msb_delta = (int)tp->t_imaxpct_delta;
+			msbp->msb_delta = tp->t_imaxpct_delta;
 			msbp++;
 		}
 		if (tp->t_rextsize_delta != 0) {
 			msbp->msb_field = XFS_SBS_REXTSIZE;
-			msbp->msb_delta = (int)tp->t_rextsize_delta;
+			msbp->msb_delta = tp->t_rextsize_delta;
 			msbp++;
 		}
 		if (tp->t_rbmblocks_delta != 0) {
 			msbp->msb_field = XFS_SBS_RBMBLOCKS;
-			msbp->msb_delta = (int)tp->t_rbmblocks_delta;
+			msbp->msb_delta = tp->t_rbmblocks_delta;
 			msbp++;
 		}
 		if (tp->t_rblocks_delta != 0) {
 			msbp->msb_field = XFS_SBS_RBLOCKS;
-			msbp->msb_delta = (int)tp->t_rblocks_delta;
+			msbp->msb_delta = tp->t_rblocks_delta;
 			msbp++;
 		}
 		if (tp->t_rextents_delta != 0) {
 			msbp->msb_field = XFS_SBS_REXTENTS;
-			msbp->msb_delta = (int)tp->t_rextents_delta;
+			msbp->msb_delta = tp->t_rextents_delta;
 			msbp++;
 		}
 		if (tp->t_rextslog_delta != 0) {
 			msbp->msb_field = XFS_SBS_REXTSLOG;
-			msbp->msb_delta = (int)tp->t_rextslog_delta;
+			msbp->msb_delta = tp->t_rextslog_delta;
 			msbp++;
 		}
 	}
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index c68e001..f1d7ab2 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -39,13 +39,9 @@ typedef struct xfs_trans_header {
 /*
  * Log item types.
  */
-#define	XFS_LI_5_3_BUF		0x1234	/* v1 bufs, 1-block inode buffers */
-#define	XFS_LI_5_3_INODE	0x1235	/* 1-block inode buffers */
 #define	XFS_LI_EFI		0x1236
 #define	XFS_LI_EFD		0x1237
 #define	XFS_LI_IUNLINK		0x1238
-#define	XFS_LI_6_1_INODE	0x1239	/* 4K non-aligned inode bufs */
-#define	XFS_LI_6_1_BUF		0x123a	/* v1, 4K inode buffers */
 #define	XFS_LI_INODE		0x123b	/* aligned ino chunks, var-size ibufs */
 #define	XFS_LI_BUF		0x123c	/* v2 bufs, variable sized inode bufs */
 #define	XFS_LI_DQUOT		0x123d
@@ -354,25 +350,25 @@ typedef struct xfs_trans {
 	xfs_trans_callback_t	t_callback;	/* transaction callback */
 	void			*t_callarg;	/* callback arg */
 	unsigned int		t_flags;	/* misc flags */
-	long			t_icount_delta;	/* superblock icount change */
-	long			t_ifree_delta;	/* superblock ifree change */
-	long			t_fdblocks_delta; /* superblock fdblocks chg */
-	long			t_res_fdblocks_delta; /* on-disk only chg */
-	long			t_frextents_delta;/* superblock freextents chg*/
-	long			t_res_frextents_delta; /* on-disk only chg */
+	int64_t			t_icount_delta;	/* superblock icount change */
+	int64_t			t_ifree_delta;	/* superblock ifree change */
+	int64_t			t_fdblocks_delta; /* superblock fdblocks chg */
+	int64_t			t_res_fdblocks_delta; /* on-disk only chg */
+	int64_t			t_frextents_delta;/* superblock freextents chg*/
+	int64_t			t_res_frextents_delta; /* on-disk only chg */
 #ifdef DEBUG
-	long			t_ag_freeblks_delta; /* debugging counter */
-	long			t_ag_flist_delta; /* debugging counter */
-	long			t_ag_btree_delta; /* debugging counter */
+	int64_t			t_ag_freeblks_delta; /* debugging counter */
+	int64_t			t_ag_flist_delta; /* debugging counter */
+	int64_t			t_ag_btree_delta; /* debugging counter */
 #endif
-	long			t_dblocks_delta;/* superblock dblocks change */
-	long			t_agcount_delta;/* superblock agcount change */
-	long			t_imaxpct_delta;/* superblock imaxpct change */
-	long			t_rextsize_delta;/* superblock rextsize chg */
-	long			t_rbmblocks_delta;/* superblock rbmblocks chg */
-	long			t_rblocks_delta;/* superblock rblocks change */
-	long			t_rextents_delta;/* superblocks rextents chg */
-	long			t_rextslog_delta;/* superblocks rextslog chg */
+	int64_t			t_dblocks_delta;/* superblock dblocks change */
+	int64_t			t_agcount_delta;/* superblock agcount change */
+	int64_t			t_imaxpct_delta;/* superblock imaxpct change */
+	int64_t			t_rextsize_delta;/* superblock rextsize chg */
+	int64_t			t_rbmblocks_delta;/* superblock rbmblocks chg */
+	int64_t			t_rblocks_delta;/* superblock rblocks change */
+	int64_t			t_rextents_delta;/* superblocks rextents chg */
+	int64_t			t_rextslog_delta;/* superblocks rextslog chg */
 	unsigned int		t_items_free;	/* log item descs free */
 	xfs_log_item_chunk_t	t_items;	/* first log item desc chunk */
 	xfs_trans_header_t	t_header;	/* header for in-log trans */
@@ -936,9 +932,9 @@ typedef struct xfs_trans {
 #define	xfs_trans_set_sync(tp)		((tp)->t_flags |= XFS_TRANS_SYNC)
 
 #ifdef DEBUG
-#define	xfs_trans_agblocks_delta(tp, d)	((tp)->t_ag_freeblks_delta += (long)d)
-#define	xfs_trans_agflist_delta(tp, d)	((tp)->t_ag_flist_delta += (long)d)
-#define	xfs_trans_agbtree_delta(tp, d)	((tp)->t_ag_btree_delta += (long)d)
+#define	xfs_trans_agblocks_delta(tp, d)	((tp)->t_ag_freeblks_delta += (int64_t)d)
+#define	xfs_trans_agflist_delta(tp, d)	((tp)->t_ag_flist_delta += (int64_t)d)
+#define	xfs_trans_agbtree_delta(tp, d)	((tp)->t_ag_btree_delta += (int64_t)d)
 #else
 #define	xfs_trans_agblocks_delta(tp, d)
 #define	xfs_trans_agflist_delta(tp, d)
@@ -954,7 +950,7 @@ xfs_trans_t	*_xfs_trans_alloc(struct xfs_mount *, uint);
 xfs_trans_t	*xfs_trans_dup(xfs_trans_t *);
 int		xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
 				  uint, uint);
-void		xfs_trans_mod_sb(xfs_trans_t *, uint, long);
+void		xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
 struct xfs_buf	*xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
 				   int, uint);
 int		xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,
diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
index fc39b16..ceb4f6e 100644
--- a/fs/xfs/xfs_trans_ail.c
+++ b/fs/xfs/xfs_trans_ail.c
@@ -90,7 +90,7 @@ xfs_trans_push_ail(
 	int			flush_log;
 	SPLDECL(s);
 
-#define	XFS_TRANS_PUSH_AIL_RESTARTS	10
+#define	XFS_TRANS_PUSH_AIL_RESTARTS	1000
 
 	AIL_LOCK(mp,s);
 	lip = xfs_trans_first_ail(mp, &gen);
diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index 62336a4..29f72f6 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -640,7 +640,7 @@ xfs_quiesce_fs(
 	 * we can write the unmount record.
 	 */
 	do {
-		xfs_syncsub(mp, SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT, 0, NULL);
+		xfs_syncsub(mp, SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT, NULL);
 		pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1);
 		if (!pincount) {
 			delay(50);
@@ -806,7 +806,7 @@ xfs_statvfs(
 
 	statp->f_type = XFS_SB_MAGIC;
 
-	xfs_icsb_sync_counters_lazy(mp);
+	xfs_icsb_sync_counters_flags(mp, XFS_ICSB_LAZY_COUNT);
 	s = XFS_SB_LOCK(mp);
 	statp->f_bsize = sbp->sb_blocksize;
 	lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0;
@@ -872,6 +872,10 @@ xfs_statvfs(
  *		       this by simply making sure the log gets flushed
  *		       if SYNC_BDFLUSH is set, and by actually writing it
  *		       out otherwise.
+ *	SYNC_IOWAIT  - The caller wants us to wait for all data I/O to complete
+ *		       before we return (including direct I/O). Forms the drain
+ *		       side of the write barrier needed to safely quiesce the
+ *		       filesystem.
  *
  */
 /*ARGSUSED*/
@@ -883,27 +887,20 @@ xfs_sync(
 {
 	xfs_mount_t	*mp = XFS_BHVTOM(bdp);
 
-	if (unlikely(flags == SYNC_QUIESCE))
-		return xfs_quiesce_fs(mp);
-	else
-		return xfs_syncsub(mp, flags, 0, NULL);
+	return xfs_syncsub(mp, flags, NULL);
 }
 
 /*
  * xfs sync routine for internal use
  *
  * This routine supports all of the flags defined for the generic vfs_sync
- * interface as explained above under xfs_sync.  In the interests of not
- * changing interfaces within the 6.5 family, additional internally-
- * required functions are specified within a separate xflags parameter,
- * only available by calling this routine.
+ * interface as explained above under xfs_sync.
  *
  */
 int
 xfs_sync_inodes(
 	xfs_mount_t	*mp,
 	int		flags,
-	int             xflags,
 	int             *bypassed)
 {
 	xfs_inode_t	*ip = NULL;
@@ -1176,6 +1173,13 @@ xfs_sync_inodes(
 			}
 
 		}
+		/*
+		 * When freezing, we need to wait ensure all I/O (including direct
+		 * I/O) is complete to ensure no further data modification can take
+		 * place after this point
+		 */
+		if (flags & SYNC_IOWAIT)
+			vn_iowait(vp);
 
 		if (flags & SYNC_BDFLUSH) {
 			if ((flags & SYNC_ATTR) &&
@@ -1412,17 +1416,13 @@ xfs_sync_inodes(
  * xfs sync routine for internal use
  *
  * This routine supports all of the flags defined for the generic vfs_sync
- * interface as explained above under xfs_sync.  In the interests of not
- * changing interfaces within the 6.5 family, additional internally-
- * required functions are specified within a separate xflags parameter,
- * only available by calling this routine.
+ * interface as explained above under xfs_sync.
  *
  */
 int
 xfs_syncsub(
 	xfs_mount_t	*mp,
 	int		flags,
-	int             xflags,
 	int             *bypassed)
 {
 	int		error = 0;
@@ -1444,7 +1444,7 @@ xfs_syncsub(
 		if (flags & SYNC_BDFLUSH)
 			xfs_finish_reclaim_all(mp, 1);
 		else
-			error = xfs_sync_inodes(mp, flags, xflags, bypassed);
+			error = xfs_sync_inodes(mp, flags, bypassed);
 	}
 
 	/*
@@ -1958,15 +1958,26 @@ xfs_showargs(
 	return 0;
 }
 
+/*
+ * Second stage of a freeze. The data is already frozen, now we have to take
+ * care of the metadata. New transactions are already blocked, so we need to
+ * wait for any remaining transactions to drain out before proceding.
+ */
 STATIC void
 xfs_freeze(
 	bhv_desc_t	*bdp)
 {
 	xfs_mount_t	*mp = XFS_BHVTOM(bdp);
 
+	/* wait for all modifications to complete */
 	while (atomic_read(&mp->m_active_trans) > 0)
 		delay(100);
 
+	/* flush inodes and push all remaining buffers out to disk */
+	xfs_quiesce_fs(mp);
+
+	ASSERT_ALWAYS(atomic_read(&mp->m_active_trans) == 0);
+
 	/* Push the superblock and write an unmount record */
 	xfs_log_unmount_write(mp);
 	xfs_unmountfs_writesb(mp);
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index bda774a..52c4171 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -51,7 +51,6 @@
 #include "xfs_refcache.h"
 #include "xfs_trans_space.h"
 #include "xfs_log_priv.h"
-#include "xfs_mac.h"
 
 STATIC int
 xfs_open(
@@ -1381,7 +1380,7 @@ xfs_inactive_symlink_rmt(
 	/*
 	 * Commit the first transaction.  This logs the EFI and the inode.
 	 */
-	if ((error = xfs_bmap_finish(&tp, &free_list, first_block, &committed)))
+	if ((error = xfs_bmap_finish(&tp, &free_list, &committed)))
 		goto error1;
 	/*
 	 * The transaction must have been committed, since there were
@@ -1790,8 +1789,7 @@ xfs_inactive(
 		 * Just ignore errors at this point.  There is
 		 * nothing we can do except to try to keep going.
 		 */
-		(void) xfs_bmap_finish(&tp,  &free_list, first_block,
-				       &committed);
+		(void) xfs_bmap_finish(&tp,  &free_list, &committed);
 		(void) xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES, NULL);
 	}
 	/*
@@ -2022,7 +2020,7 @@ xfs_create(
 	IHOLD(ip);
 	vp = XFS_ITOV(ip);
 
-	error = xfs_bmap_finish(&tp, &free_list, first_block, &committed);
+	error = xfs_bmap_finish(&tp, &free_list, &committed);
 	if (error) {
 		xfs_bmap_cancel(&free_list);
 		goto abort_rele;
@@ -2507,7 +2505,7 @@ xfs_remove(
 		xfs_trans_set_sync(tp);
 	}
 
-	error = xfs_bmap_finish(&tp, &free_list, first_block, &committed);
+	error = xfs_bmap_finish(&tp, &free_list, &committed);
 	if (error) {
 		REMOVE_DEBUG_TRACE(__LINE__);
 		goto error_rele;
@@ -2715,7 +2713,7 @@ xfs_link(
 		xfs_trans_set_sync(tp);
 	}
 
-	error = xfs_bmap_finish (&tp, &free_list, first_block, &committed);
+	error = xfs_bmap_finish (&tp, &free_list, &committed);
 	if (error) {
 		xfs_bmap_cancel(&free_list);
 		goto abort_return;
@@ -2932,7 +2930,7 @@ xfs_mkdir(
 		xfs_trans_set_sync(tp);
 	}
 
-	error = xfs_bmap_finish(&tp, &free_list, first_block, &committed);
+	error = xfs_bmap_finish(&tp, &free_list, &committed);
 	if (error) {
 		IRELE(cdp);
 		goto error2;
@@ -3183,7 +3181,7 @@ xfs_rmdir(
 		xfs_trans_set_sync(tp);
 	}
 
-	error = xfs_bmap_finish (&tp, &free_list, first_block, &committed);
+	error = xfs_bmap_finish (&tp, &free_list, &committed);
 	if (error) {
 		xfs_bmap_cancel(&free_list);
 		xfs_trans_cancel(tp, (XFS_TRANS_RELEASE_LOG_RES |
@@ -3533,7 +3531,7 @@ xfs_symlink(
 	 */
 	IHOLD(ip);
 
-	error = xfs_bmap_finish(&tp, &free_list, first_block, &committed);
+	error = xfs_bmap_finish(&tp, &free_list, &committed);
 	if (error) {
 		goto error2;
 	}
@@ -4145,7 +4143,7 @@ retry:
 		/*
 		 * Complete the transaction
 		 */
-		error = xfs_bmap_finish(&tp, &free_list, firstfsb, &committed);
+		error = xfs_bmap_finish(&tp, &free_list, &committed);
 		if (error) {
 			goto error0;
 		}
@@ -4452,7 +4450,7 @@ xfs_free_file_space(
 		/*
 		 * complete the transaction
 		 */
-		error = xfs_bmap_finish(&tp, &free_list, firstfsb, &committed);
+		error = xfs_bmap_finish(&tp, &free_list, &committed);
 		if (error) {
 			goto error0;
 		}