linux-kernel - [PATCH 2/2] fs: optimize mpage_bio

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Message-Id: <1275095966-18382-1-git-send-email-xiaosuo@gmail.com>
Date:	Sat, 29 May 2010 09:19:26 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	Alexander Viro <viro@...iv.linux.org.uk>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Changli Gao <xiaosuo@...il.com>
Subject: [PATCH 2/2] fs: optimize mpage_bio_submit()

optimize mpage_bio_submit()

check rw, then initialize bio->bi_end_io.

Signed-off-by: Changli Gao <xiaosuo@...il.com>
----
 fs/mpage.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/mpage.c b/fs/mpage.c
index 94ff0d1..632681c 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -85,9 +85,7 @@ static void mpage_end_io_write(struct bio *bio, int err)
 
 static struct bio *mpage_bio_submit(int rw, struct bio *bio)
 {
-	bio->bi_end_io = mpage_end_io_read;
-	if (rw == WRITE)
-		bio->bi_end_io = mpage_end_io_write;
+	bio->bi_end_io = rw != WRITE ? mpage_end_io_read : mpage_end_io_write;
 	submit_bio(rw, bio);
 	return NULL;
 }
--
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