[PATCH v2 3/8] blk-mq: use the introduced blk_mq_unquiesce_queue()

[Bart Van Assche]

On Sat, 2017-05-27 at 22:21 +0800, Ming Lei wrote:
> --- a/drivers/scsi/scsi_lib.c
> +++ b/drivers/scsi/scsi_lib.c
> @@ -3030,7 +3030,10 @@ scsi_internal_device_unblock(struct scsi_device *sdev,
>  		return -EINVAL;
>  
>  	if (q->mq_ops) {
> -		blk_mq_start_stopped_hw_queues(q, false);
> +		if (blk_queue_quiesced(q))
> +			blk_mq_unquiesce_queue(q);
> +		else
> +			blk_mq_start_stopped_hw_queues(q, false);
>  	} else {
>  		spin_lock_irqsave(q->queue_lock, flags);
>  		blk_start_queue(q);

Hello Ming,

Sorry but that change looks wrong to me. All what's needed here is a call
to blk_mq_unquiesce_queue().

Bart.