[PATCH 1/3] block: introduce blk_queue_nr_active()
Bart Van Assche
bvanassche at acm.org
Mon Sep 25 13:56:22 PDT 2023
On 9/25/23 09:31, Ewan D. Milne wrote:
> +static inline unsigned int blk_mq_queue_nr_active(struct request_queue *q)
> +{
> + unsigned int nr_active = 0;
> + struct blk_mq_hw_ctx *hctx;
> + unsigned long i;
> +
> + queue_for_each_hw_ctx(q, hctx, i) {
> + if (unlikely(blk_mq_is_shared_tags(hctx->flags)))
> + return atomic_read(&q->nr_active_requests_shared_tags);
> + nr_active += atomic_read(&hctx->nr_active);
> + }
> + return nr_active;
> +}
The above function should never be called from any command submission
code path. Hence, I think it should be added in a .c file instead of
include/linux/blk-mq.h.
Thanks,
Bart.
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