From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] blk-mq: properly drain stopped queues
Date: Fri, 13 Jun 2014 19:43:04 +0200 [thread overview]
Message-ID: <20140613174304.GA20317@lst.de> (raw)
If we need to drain a queue we need to run all queues, even if they
are marked stopped to make sure the driver has a chance to error out
on all queued requests.
This fixes surprise removal with scsi-mq.
Reported-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Bart Van Assche <bvanassche@acm.org>
---
block/blk-mq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 3d868d3..15b3ccd 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -120,7 +120,7 @@ static void __blk_mq_drain_queue(struct request_queue *q)
if (count == 0)
break;
- blk_mq_run_queues(q, false);
+ blk_mq_start_hw_queues(q);
msleep(10);
}
}
--
1.7.10.4
next reply other threads:[~2014-06-13 17:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-13 17:43 Christoph Hellwig [this message]
2014-06-13 17:43 ` [PATCH 2/2] blk-mq: merge blk_mq_drain_queue and __blk_mq_drain_queue Christoph Hellwig
2014-06-13 18:17 ` [PATCH 1/2] blk-mq: properly drain stopped queues Jens Axboe
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