Ext3: use unlikely to improve the efficiency of the kernel

Because the function 'sb_getblk' seldomly fails to return
NULL value,it will be better to use unlikely to check it.

Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c
index d22ebb7a4f55..9f57470b1727 100644
--- a/fs/ext3/xattr.c
+++ b/fs/ext3/xattr.c
@@ -813,7 +813,7 @@ inserted:
                         ea_idebug(inode, "creating block %d", block);
 
                         new_bh = sb_getblk(sb, block);
-                        if (!new_bh) {
+                        if (unlikely(!new_bh)) {
 getblk_failed:
                                 ext3_free_blocks(handle, inode, block, 1);
                                 error = -EIO;