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nvme: Fix a race condition related to stopping queues

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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>
This commit is contained in:
Bart Van Assche 2016-10-28 17:23:19 -07:00 committed by Jens Axboe
parent 7b17c2f729
commit 3174dd33fa
1 changed files with 1 additions and 1 deletions
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2
drivers/nvme/host/core.c
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@ -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);
}