On Sat, Sep 02, 2017 at 11:17:19PM +0800, Ming Lei wrote:
> So that it becomes easy to support to dispatch from
> sw queue in the following patch.
>
> No functional change.
>
> Reviewed-by: Bart Van Assche <bart.vanass...@wdc.com>
> Signed-off-by: Ming Lei <ming....@redhat.com>
> ---
> block/blk-mq-sched.c | 28 ++++++++++++++++++----------
> 1 file changed, 18 insertions(+), 10 deletions(-)
>
> diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
> index 845e5baf8af1..f69752961a34 100644
> --- a/block/blk-mq-sched.c
> +++ b/block/blk-mq-sched.c
> @@ -89,6 +89,22 @@ static bool blk_mq_sched_restart_hctx(struct blk_mq_hw_ctx
> *hctx)
> return false;
> }
>
> +static void blk_mq_do_dispatch(struct request_queue *q,
> + struct elevator_queue *e,
> + struct blk_mq_hw_ctx *hctx)
You rename this to blk_mq_do_dispatch_sched() in the next patch, might
as well name it that way in the first place. Besides that,
Reviewed-by: Omar Sandoval <osan...@fb.com>
> +{
> + LIST_HEAD(rq_list);
> +
> + do {
> + struct request *rq;
> +
> + rq = e->type->ops.mq.dispatch_request(hctx);
> + if (!rq)
> + break;
> + list_add(&rq->queuelist, &rq_list);
> + } while (blk_mq_dispatch_rq_list(q, &rq_list));
> +}
> +
> void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx)
> {
> struct request_queue *q = hctx->queue;
> @@ -136,16 +152,8 @@ void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx
> *hctx)
> * on the dispatch list, OR if we did have work but weren't able
> * to make progress.
> */
> - if (do_sched_dispatch && has_sched_dispatch) {
> - do {
> - struct request *rq;
> -
> - rq = e->type->ops.mq.dispatch_request(hctx);
> - if (!rq)
> - break;
> - list_add(&rq->queuelist, &rq_list);
> - } while (blk_mq_dispatch_rq_list(q, &rq_list));
> - }
> + if (do_sched_dispatch && has_sched_dispatch)
> + blk_mq_do_dispatch(q, e, hctx);
> }
>
> bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio,
> --
> 2.9.5
>
