Re: [PATCH 2/4] blk-mq-tag: remove bt_for_each()

Chengming Zhou
2023-08-22T02:28:03Z

On 2023/8/22 05:26, Bart Van Assche wrote:
> On 8/21/23 00:35, chengming.zhou@linux.dev wrote:
>> 2. __blk_mq_tagset_busy_iter() has BT_TAG_ITER_STARTED flag set, so only
>>     started requests will be iterated, which should be more efficient.
>
> The above motivation sounds wrong to me. The goal here should be not to
> change the behavior of blk_mq_queue_tag_busy_iter(). Although
> blk_mq_queue_tag_busy_iter() iterates over more requests than only started
> requests, apparently blk_mq_queue_tag_busy_iter() is only used to iterate
> over started requests (blk_mq_request_started()). Please mention this in
> the patch description.
>

Ok, will do.

Thanks.