On 12/5/23 14:32, Bart Van Assche wrote:
> Prepare for disabling I/O prioritization in certain cases.
>
> Cc: Damien Le Moal <dlemoal@xxxxxxxxxx>
> Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
Reviewed-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
> ---
> block/mq-deadline.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/block/mq-deadline.c b/block/mq-deadline.c
> index e558f3660357..fe5da2ade953 100644
> --- a/block/mq-deadline.c
> +++ b/block/mq-deadline.c
> @@ -128,6 +128,11 @@ static u8 dd_rq_ioclass(struct request *rq)
> return IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
> }
>
> +static u8 dd_bio_ioclass(struct bio *bio)
> +{
> + return IOPRIO_PRIO_CLASS(bio->bi_ioprio);
> +}
> +
> /*
> * get the request before `rq' in sector-sorted order
> */
> @@ -744,7 +749,7 @@ static int dd_request_merge(struct request_queue *q, struct request **rq,
> struct bio *bio)
> {
> struct deadline_data *dd = q->elevator->elevator_data;
> - const u8 ioprio_class = IOPRIO_PRIO_CLASS(bio->bi_ioprio);
> + const u8 ioprio_class = dd_bio_ioclass(bio);
> const enum dd_prio prio = ioprio_class_to_prio[ioprio_class];
> struct dd_per_prio *per_prio = &dd->per_prio[prio];
> sector_t sector = bio_end_sector(bio);
--
Damien Le Moal
Western Digital Research
