linux-kernel - [PATCH 1/3] block: set up rq->rq_disk properly for flush requests

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Date:	Thu, 24 Jun 2010 00:07:30 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	axboe@...nel.dk, James.Bottomley@...senPartnership.com
Cc:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	fujita.tomonori@....ntt.co.jp
Subject: [PATCH 1/3] block: set up rq->rq_disk properly for flush requests

q->bar_rq.rq_disk is NULL. Use the rq_disk of the original request
instead.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
---
 block/blk-barrier.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/block/blk-barrier.c b/block/blk-barrier.c
index 7c6f4a7..4646f6d 100644
--- a/block/blk-barrier.c
+++ b/block/blk-barrier.c
@@ -144,7 +144,7 @@ static void queue_flush(struct request_queue *q, unsigned which)
 
 	blk_rq_init(q, rq);
 	rq->cmd_flags = REQ_HARDBARRIER;
-	rq->rq_disk = q->bar_rq.rq_disk;
+	rq->rq_disk = q->orig_bar_rq->rq_disk;
 	rq->end_io = end_io;
 	q->prepare_flush_fn(q, rq);
 
-- 
1.6.5

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