blk-mq: properly drain stopped queues
authorChristoph Hellwig <hch@lst.de>
Fri, 13 Jun 2014 17:43:04 +0000 (19:43 +0200)
committerJens Axboe <axboe@fb.com>
Fri, 13 Jun 2014 18:17:38 +0000 (12:17 -0600)
commit8f5280f4ee75333ca12bde99ef6280ff65a8af43
tree4605a53ad23a248379a49a4cba2df0408960f0d5
parent28747fcd2211d0fccbe3d3c91a1067c3744db908
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>
block/blk-mq.c