RE: [PATCH 9/9] [RFC] nvme: Fix a race condition

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> @@ -2079,11 +2075,15 @@ EXPORT_SYMBOL_GPL(nvme_kill_queues);
>  void nvme_stop_queues(struct nvme_ctrl *ctrl)
>  {
>  	struct nvme_ns *ns;
> +	struct request_queue *q;
> 
>  	mutex_lock(&ctrl->namespaces_mutex);
>  	list_for_each_entry(ns, &ctrl->namespaces, list) {
> -		blk_mq_cancel_requeue_work(ns->queue);
> -		blk_mq_stop_hw_queues(ns->queue);
> +		q = ns->queue;
> +		blk_quiesce_queue(q);
> +		blk_mq_cancel_requeue_work(q);
> +		blk_mq_stop_hw_queues(q);
> +		blk_resume_queue(q);
>  	}
>  	mutex_unlock(&ctrl->namespaces_mutex);

Hey Bart, should nvme_stop_queues() really be resuming the blk queue?



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