[patch 1/5] No lock needed when freeing inode

[Andreas Gruenbacher <agruen@suse.de>]

[-- Attachment #1: ea-xattr-nolock.diff --]
[-- Type: text/plain, Size: 867 bytes --]

ext3_xattr_delete_inode is called from ext3_free_inode which always
has exclusive access to the inode, so there is no need to take the
xattr semaphore.

Signed-off-by: Andreas Gruenbacher <agruen@suse.de>

Index: linux-2.6.11-latest/fs/ext3/xattr.c
===================================================================
--- linux-2.6.11-latest.orig/fs/ext3/xattr.c
+++ linux-2.6.11-latest/fs/ext3/xattr.c
@@ -1066,7 +1066,6 @@ ext3_xattr_delete_inode(handle_t *handle
 {
 	struct buffer_head *bh = NULL;
 
-	down_write(&EXT3_I(inode)->xattr_sem);
 	if (!EXT3_I(inode)->i_file_acl)
 		goto cleanup;
 	bh = sb_bread(inode->i_sb, EXT3_I(inode)->i_file_acl);
@@ -1088,7 +1087,6 @@ ext3_xattr_delete_inode(handle_t *handle
 
 cleanup:
 	brelse(bh);
-	up_write(&EXT3_I(inode)->xattr_sem);
 }
 
 /*

--
Andreas Gruenbacher <agruen@suse.de>
SUSE Labs, SUSE LINUX PRODUCTS GMBH