Re: [PATCH for-6.18/block 08/10] blk-mq: fix potential deadlock while nr_requests grown

[Yu Kuai <yukuai1@xxxxxxxxxxxxxxx>]

Hi,

在 2025/09/08 14:15, Yu Kuai 写道:
> @@ -90,16 +91,24 @@ queue_requests_store(struct gendisk *disk, const char *page, size_t count)
>   		goto unlock;
>   	}
>   
> +	if (q->elevator && nr > q->elevator->et->nr_requests) {

While rebasing v2, I found that I should also add non-shared checking
here, because from blk_mq_alloc_shced_tags(), et->nr_requests is not set
to MAX_SCHED_RQ, and we don't want to allocate memory for shared case.

I'll fix this as well in v2.

Thanks,
Kuai