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/super.c b/fs/ext2/super.c
index fa04d02..7f68c81 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -1500,7 +1500,7 @@
bh = sb_bread(sb, tmp_bh.b_blocknr);
else
bh = sb_getblk(sb, tmp_bh.b_blocknr);
- if (!bh) {
+ if (unlikely(!bh)) {
err = -EIO;
goto out;
}