Re: [PATCH v3 07/11] dm: Fix a race condition related to stopping and starting queues

Looks good: Reviewed-by: Christoph Hellwig FYI, I wonder how many of the blk_mq_stop_hw_queues do not need the quiesce call. In the long run it might be better to have blk_mq_stop_hw_queues to stop an quiesce, and have a __blk_mq_stop_hw_queues variant to just stop. -- To

[PATCH v3 07/11] dm: Fix a race condition related to stopping and starting queues

Ensure that all ongoing dm_mq_queue_rq() and dm_mq_requeue_request() calls have stopped before setting the "queue stopped" flag. This allows to remove the "queue stopped" test from dm_mq_queue_rq() and dm_mq_requeue_request(). This patch fixes a race condition because dm_mq_queue_rq() is called