linux-kernel - [patch]cfq-iosched: delete dead code --resend

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Date:	Mon, 26 Sep 2011 10:30:24 +0800
From:	Shaohua Li <shaohua.li@...el.com>
To:	Jens Axboe <axboe@...nel.dk>
Cc:	lkml <linux-kernel@...r.kernel.org>
Subject: [patch]cfq-iosched: delete dead code --resend

Below check is obsoleted. Currently requests in a queue are not
sync/async mixed (except oom queue, but it's rare case)

Signed-off-by: Shaohua Li <shaohua.li@...el.com>

---
 block/cfq-iosched.c |    3 ---
 1 file changed, 3 deletions(-)

Index: linux/block/cfq-iosched.c
===================================================================
--- linux.orig/block/cfq-iosched.c	2011-09-22 12:54:06.000000000 +0800
+++ linux/block/cfq-iosched.c	2011-09-22 12:56:47.000000000 +0800
@@ -681,9 +681,6 @@ cfq_choose_req(struct cfq_data *cfqd, st
 	if (rq2 == NULL)
 		return rq1;
 
-	if (rq_is_sync(rq1) != rq_is_sync(rq2))
-		return rq_is_sync(rq1) ? rq1 : rq2;
-
 	if ((rq1->cmd_flags ^ rq2->cmd_flags) & REQ_PRIO)
 		return rq1->cmd_flags & REQ_PRIO ? rq1 : rq2;
 


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