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Date:	Fri, 05 Jun 2009 17:36:16 +0800
From:	Gui Jianfeng <guijianfeng@...fujitsu.com>
To:	Vivek Goyal <vgoyal@...hat.com>
CC:	linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org, dm-devel@...hat.com,
	jens.axboe@...cle.com, nauman@...gle.com, dpshah@...gle.com,
	lizf@...fujitsu.com, mikew@...gle.com, fchecconi@...il.com,
	paolo.valente@...more.it, ryov@...inux.co.jp,
	fernando@....ntt.co.jp, s-uchida@...jp.nec.com, taka@...inux.co.jp,
	jmoyer@...hat.com, dhaval@...ux.vnet.ibm.com,
	balbir@...ux.vnet.ibm.com, righi.andrea@...il.com,
	m-ikeda@...jp.nec.com, jbaron@...hat.com, agk@...hat.com,
	snitzer@...hat.com, akpm@...ux-foundation.org, peterz@...radead.org
Subject: Re: [PATCH 05/20] io-controller: Common hierarchical fair queuing
 code in elevaotor layer

Vivek Goyal wrote:
...
> +#ifdef CONFIG_GROUP_IOSCHED
> +extern int io_group_allow_merge(struct request *rq, struct bio *bio);
> +extern void io_ioq_move(struct elevator_queue *e, struct io_queue *ioq,

io_ioq_move is not used anymore, removing the dead code.

Singed-off-by: Gui Jianfeng <guijianfeng@...fujitsu.com>
---
 block/elevator-fq.h |   11 -----------
 1 files changed, 0 insertions(+), 11 deletions(-)

diff --git a/block/elevator-fq.h b/block/elevator-fq.h
index 1c99e83..24a3af9 100644
--- a/block/elevator-fq.h
+++ b/block/elevator-fq.h
@@ -537,8 +537,6 @@ static inline struct io_group *ioq_to_io_group(struct io_queue *ioq)
 
 #ifdef CONFIG_GROUP_IOSCHED
 extern int io_group_allow_merge(struct request *rq, struct bio *bio);
-extern void io_ioq_move(struct elevator_queue *e, struct io_queue *ioq,
-					struct io_group *iog);
 static inline bfq_weight_t iog_weight(struct io_group *iog)
 {
 	return iog->entity.weight;
@@ -588,15 +586,6 @@ static inline int update_requeue(struct io_queue *ioq, int requeue)
 }
 
 #else /* !GROUP_IOSCHED */
-/*
- * No ioq movement is needed in case of flat setup. root io group gets cleaned
- * up upon elevator exit and before that it has been made sure that both
- * active and idle tree are empty.
- */
-static inline void io_ioq_move(struct elevator_queue *e, struct io_queue *ioq,
-					struct io_group *iog)
-{
-}
 
 static inline int io_group_allow_merge(struct request *rq, struct bio *bio)
 {
-- 
1.5.4.rc3


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