linux-kernel - [f2fs-dev] [PATCH] f2fs: use unlikely for release case

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Date:   Tue, 5 Dec 2017 16:38:01 +0800
From:   "LiFan" <fanofcode.li@...sung.com>
To:     "'Chao Yu'" <yuchao0@...wei.com>, "'Chao Yu'" <chao@...nel.org>,
        "'Jaegeuk Kim'" <jaegeuk@...nel.org>
Cc:     <linux-kernel@...r.kernel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>
Subject: [f2fs-dev] [PATCH] f2fs: use unlikely for release case

Since the variable release is only nonzero when another unlikely
case occurs, use unlikely() on it seems logical.

Signed-off-by: Fan li <fanofcode.li@...sung.com>
---
 fs/f2fs/f2fs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 71fbba96..0f01af0 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1594,7 +1594,7 @@ static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
 	}
 	spin_unlock(&sbi->stat_lock);
 
-	if (release)
+	if (unlikely(release))
 		dquot_release_reservation_block(inode, release);
 	f2fs_i_blocks_write(inode, *count, true, true);
 	return 0;
-- 
2.7.4