Merge commit 'v2.6.33' into tracing/core

Conflicts:
	scripts/recordmcount.pl

Merge reason: Merge up to v2.6.33.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

5 files changed, 37 insertions, 9 deletions

diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 1150ebb..2df0f5c 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -1497,9 +1497,11 @@ struct inode *reiserfs_iget(struct super_block *s, const struct cpu_key *key)
 
 	args.objectid = key->on_disk_key.k_objectid;
 	args.dirid = key->on_disk_key.k_dir_id;
+	reiserfs_write_unlock(s);
 	inode = iget5_locked(s, key->on_disk_key.k_objectid,
 			     reiserfs_find_actor, reiserfs_init_locked_inode,
 			     (void *)(&args));
+	reiserfs_write_lock(s);
 	if (!inode)
 		return ERR_PTR(-ENOMEM);
 
@@ -3062,13 +3064,14 @@ static ssize_t reiserfs_direct_IO(int rw, struct kiocb *iocb,
 int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
 {
 	struct inode *inode = dentry->d_inode;
-	int error;
 	unsigned int ia_valid;
+	int depth;
+	int error;
 
 	/* must be turned off for recursive notify_change calls */
 	ia_valid = attr->ia_valid &= ~(ATTR_KILL_SUID|ATTR_KILL_SGID);
 
-	reiserfs_write_lock(inode->i_sb);
+	depth = reiserfs_write_lock_once(inode->i_sb);
 	if (attr->ia_valid & ATTR_SIZE) {
 		/* version 2 items will be caught by the s_maxbytes check
 		 ** done for us in vmtruncate
@@ -3149,8 +3152,17 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
 				    journal_end(&th, inode->i_sb, jbegin_count);
 			}
 		}
-		if (!error)
+		if (!error) {
+			/*
+			 * Relax the lock here, as it might truncate the
+			 * inode pages and wait for inode pages locks.
+			 * To release such page lock, the owner needs the
+			 * reiserfs lock
+			 */
+			reiserfs_write_unlock_once(inode->i_sb, depth);
 			error = inode_setattr(inode, attr);
+			depth = reiserfs_write_lock_once(inode->i_sb);
+		}
 	}
 
 	if (!error && reiserfs_posixacl(inode->i_sb)) {
@@ -3159,7 +3171,8 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
 	}
 
       out:
-	reiserfs_write_unlock(inode->i_sb);
+	reiserfs_write_unlock_once(inode->i_sb, depth);
+
 	return error;
 }
 
diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index ace7745..f53505d 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -104,9 +104,10 @@ setflags_out:
 		err = put_user(inode->i_generation, (int __user *)arg);
 		break;
 	case REISERFS_IOC_SETVERSION:
-		if (!is_owner_or_cap(inode))
+		if (!is_owner_or_cap(inode)) {
 			err = -EPERM;
 			break;
+		}
 		err = mnt_want_write(filp->f_path.mnt);
 		if (err)
 			break;
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 83ac4d3..ba98546 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -2913,7 +2913,9 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
 	journal->j_mount_id = 10;
 	journal->j_state = 0;
 	atomic_set(&(journal->j_jlock), 0);
+	reiserfs_write_unlock(sb);
 	journal->j_cnode_free_list = allocate_cnodes(num_cnodes);
+	reiserfs_write_lock(sb);
 	journal->j_cnode_free_orig = journal->j_cnode_free_list;
 	journal->j_cnode_free = journal->j_cnode_free_list ? num_cnodes : 0;
 	journal->j_cnode_used = 0;
diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
index c3b004e..81f09fa 100644
--- a/fs/reiserfs/xattr.c
+++ b/fs/reiserfs/xattr.c
@@ -452,7 +452,9 @@ static int lookup_and_delete_xattr(struct inode *inode, const char *name)
 	}
 
 	if (dentry->d_inode) {
+		reiserfs_write_lock(inode->i_sb);
 		err = xattr_unlink(xadir->d_inode, dentry);
+		reiserfs_write_unlock(inode->i_sb);
 		update_ctime(inode);
 	}
 
@@ -486,17 +488,21 @@ reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *th,
 	if (get_inode_sd_version(inode) == STAT_DATA_V1)
 		return -EOPNOTSUPP;
 
-	if (!buffer)
-		return lookup_and_delete_xattr(inode, name);
-
 	reiserfs_write_unlock(inode->i_sb);
+
+	if (!buffer) {
+		err = lookup_and_delete_xattr(inode, name);
+		reiserfs_write_lock(inode->i_sb);
+		return err;
+	}
+
 	dentry = xattr_lookup(inode, name, flags);
 	if (IS_ERR(dentry)) {
 		reiserfs_write_lock(inode->i_sb);
 		return PTR_ERR(dentry);
 	}
 
-	down_read(&REISERFS_I(inode)->i_xattr_sem);
+	down_write(&REISERFS_I(inode)->i_xattr_sem);
 
 	reiserfs_write_lock(inode->i_sb);
 
@@ -554,8 +560,12 @@ reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *th,
 			.ia_size = buffer_size,
 			.ia_valid = ATTR_SIZE | ATTR_CTIME,
 		};
+
+		reiserfs_write_unlock(inode->i_sb);
 		mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_XATTR);
 		down_write(&dentry->d_inode->i_alloc_sem);
+		reiserfs_write_lock(inode->i_sb);
+
 		err = reiserfs_setattr(dentry, &newattrs);
 		up_write(&dentry->d_inode->i_alloc_sem);
 		mutex_unlock(&dentry->d_inode->i_mutex);
diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c
index cc32e6a..dd20a78 100644
--- a/fs/reiserfs/xattr_acl.c
+++ b/fs/reiserfs/xattr_acl.c
@@ -455,7 +455,9 @@ int reiserfs_acl_chmod(struct inode *inode)
 		return 0;
 	}
 
+	reiserfs_write_unlock(inode->i_sb);
 	acl = reiserfs_get_acl(inode, ACL_TYPE_ACCESS);
+	reiserfs_write_lock(inode->i_sb);
 	if (!acl)
 		return 0;
 	if (IS_ERR(acl))