From: Wang Shilong <wangsl-fnst@xxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxx>
---
fs/ext2/super.c | 2 +-
fs/ext2/xattr.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index af74d9e..c0f4fc6 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -1495,7 +1495,7 @@ 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;
}
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index b6754db..06209ec 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -662,7 +662,7 @@ ext2_xattr_set2(struct inode *inode, struct
buffer_head *old_bh,
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;
--
1.7.7.6
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