From: Christoph Hellwig <hch@lst.de>
Date: Fri, 13 Jun 2014 17:43:04 +0000 (+0200)
Subject: blk-mq: properly drain stopped queues
X-Git-Tag: omap-for-v3.17/soc-cleanup~74^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8f5280f4ee75333ca12bde99ef6280ff65a8af43;p=pandora-kernel.git

blk-mq: properly drain stopped queues

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>

Signed-off-by: Jens Axboe <axboe@fb.com>
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