On Mon, 2017-06-05 at 23:59 +0800, Ming Lei wrote:
> This patch introduces blk_mq_quiesce_queue_nowait() so
> that we can workaround mpt3sas for quiescing its queue.
>
> Once mpt3sas is fixed, we can remove this helper.
>
> Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
> ---
> include/linux/blk-mq.h | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
> index 1e480015d172..13d1196f492f 100644
> --- a/include/linux/blk-mq.h
> +++ b/include/linux/blk-mq.h
> @@ -266,6 +266,14 @@ int blk_mq_map_queues(struct blk_mq_tag_set *set);
> void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues);
>
> /*
> + * FIXME: this helper is just for working around mpt3sas.
> + */
> +static inline void blk_mq_quiesce_queue_nowait(struct request_queue *q)
> +{
> + blk_mq_stop_hw_queues(q);
> +}
> +
> +/*
> * Driver command data is immediately after the request. So subtract request
> * size to get back to the original request, add request size to get the PDU.
> */
Reviewed-by: Bart Van Assche <Bart.VanAssche@xxxxxxxxxxx>
