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authorWang Shilong <wangsl-fnst@cn.fujitsu.com>2013-01-12 01:34:50 -0800
committerJan Kara <jack@suse.cz>2013-01-21 11:19:56 +0100
commit2b0542a4a0d9b8cb98e64fc87c5e31d130029a92 (patch)
treef4dceeb8df21b16ffe4fe949816503b15d0fc649 /fs/ext2/super.c
parent61f43e6880dee5983999fe40bf96c1cf43740b4c (diff)
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>
Diffstat (limited to 'fs/ext2/super.c')
-rw-r--r--fs/ext2/super.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index fa04d023177e..7f68c8114026 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -1500,7 +1500,7 @@ static ssize_t ext2_quota_write(struct super_block *sb, int type,
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;
}