tree 870376e3cae6542564325980b7c0d11b1f2b0345
parent 1c357a1e86a4227a6b6059f2de118ae47659cebc
author Mike Snitzer <snitzer@redhat.com> 1455946727 -0500
committer Mike Snitzer <snitzer@redhat.com> 1456198389 -0500

dm: fix a couple locking issues with use of block interfaces

old_stop_queue() was checking blk_queue_stopped() without holding the
q->queue_lock.

dm_requeue_original_request() needed to check blk_queue_stopped(), with
q->queue_lock held, before calling blk_mq_kick_requeue_list().  And a
side-effect of that change is start_queue() must also call
blk_mq_kick_requeue_list().

Signed-off-by: Mike Snitzer <snitzer@redhat.com>