linux-kernel - [PATCH] block: initialize flush request with WRITE_FLUSH instead of REQ

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Date:	Mon, 30 Aug 2010 17:42:59 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Mike Snitzer <snitzer@...hat.com>
CC:	jaxboe@...ionio.com, k-ueda@...jp.nec.com, j-nomura@...jp.nec.com,
	jamie@...reable.org, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-raid@...r.kernel.org,
	hch@....de
Subject: [PATCH] block: initialize flush request with WRITE_FLUSH instead
 of REQ_FLUSH

init_flush_request() only set REQ_FLUSH when initializing flush
requests making them READ requests.  Use WRITE_FLUSH instead.

Signed-off-by: Tejun Heo <tj@...nel.org>
Reported-by: Mike Snitzer <snitzer@...hat.com>
---
So, this was the culprit for the incorrect data direction for flush
requests.

Thanks.

 block/blk-flush.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: block/block/blk-flush.c
===================================================================
--- block.orig/block/blk-flush.c
+++ block/block/blk-flush.c
@@ -77,7 +77,7 @@ static void post_flush_end_io(struct req
 static void init_flush_request(struct request *rq, struct gendisk *disk)
 {
 	rq->cmd_type = REQ_TYPE_FS;
-	rq->cmd_flags = REQ_FLUSH;
+	rq->cmd_flags = WRITE_FLUSH;
 	rq->rq_disk = disk;
 }

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