On Thu, May 10, 2018 at 10:24:26AM -0600, Jens Axboe wrote:
> We don't expect the async depth to be smaller than the wake batch
> count for sbitmap, but just in case, inform sbitmap of what shallow
> depth kyber may use.
>
> Acked-by: Paolo Valente <paolo.valente@xxxxxxxxxx>
Reviewed-by: Omar Sandoval <osandov@xxxxxx>
> Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
> ---
> block/kyber-iosched.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/block/kyber-iosched.c b/block/kyber-iosched.c
> index 564967fafe5f..5b33dc394cc7 100644
> --- a/block/kyber-iosched.c
> +++ b/block/kyber-iosched.c
> @@ -378,6 +378,7 @@ static void kyber_exit_sched(struct elevator_queue *e)
>
> static int kyber_init_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_idx)
> {
> + struct kyber_queue_data *kqd = hctx->queue->elevator->elevator_data;
> struct kyber_hctx_data *khd;
> int i;
>
> @@ -400,6 +401,8 @@ static int kyber_init_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_idx)
> khd->batching = 0;
>
> hctx->sched_data = khd;
> + sbitmap_queue_min_shallow_depth(&hctx->sched_tags->bitmap_tags,
> + kqd->async_depth);
>
> return 0;
> }
> --
> 2.7.4
>
