Commit 3174dd33 authored Oct 28, 2016 by Bart Van Assche Committed by Jens Axboe Nov 02, 2016

nvme: Fix a race condition related to stopping queues



Avoid that nvme_queue_rq() is still running when nvme_stop_queues()
returns.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

parent 7b17c2f7

drivers/nvme/host/core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2081,7 +2081,7 @@ void nvme_stop_queues(struct nvme_ctrl *ctrl)
		queue_flag_set(QUEUE_FLAG_STOPPED, ns->queue);
		spin_unlock_irq(ns->queue->queue_lock);

		blk_mq_stop_hw_queues(ns->queue);
		blk_mq_quiesce_queue(ns->queue);
		}
		mutex_unlock(&ctrl->namespaces_mutex);
		}