linux-kernel - [f2fs-dev] [PATCH 2/5] f2fs: add unlikely macro for compiler optimization

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Message-id: <003301ceec0d$77ddaef0$67990cd0$@samsung.com>
Date:	Thu, 28 Nov 2013 15:42:35 +0800
From:	Chao Yu <chao2.yu@...sung.com>
To:	??? <jaegeuk.kim@...sung.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net,
	谭姝 <shu.tan@...sung.com>
Subject: [f2fs-dev] [PATCH 2/5] f2fs: add unlikely macro for compiler
 optimization

Signed-off-by: Chao Yu <chao2.yu@...sung.com>
---
 fs/f2fs/node.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 0fe9a97..954155b 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1160,7 +1160,7 @@ int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino)
 			struct page *page = pvec.pages[i];
 
 			/* until radix tree lookup accepts end_index */
-			if (page->index > end)
+			if (unlikely(page->index > end))
 				continue;
 
 			if (ino && ino_of_node(page) == ino) {
-- 
1.7.9.5

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