Ext2: 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 optimize it.
Signed-off-by: Wang shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index b6754db..06209ec4 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -662,7 +662,7 @@
ea_idebug(inode, "creating block %d", block);
new_bh = sb_getblk(sb, block);
- if (!new_bh) {
+ if (unlikely(!new_bh)) {
ext2_free_blocks(inode, block, 1);
mark_inode_dirty(inode);
error = -EIO;