Re: [PATCHSET v2 block/for-5.8] iocost: improve use_delay and latency target handling

From: Pavel Begunkov
Date: Mon Apr 13 2020 - 13:01:40 EST


On 13/04/2020 19:56, Pavel Begunkov wrote:
> On 13/04/2020 19:27, Tejun Heo wrote:
>> Changes from v1[1]
>>
>> * Dropped 0002-block-add-request-io_data_len.patch and updated to use
>> rq->stats_sectors instead as suggested by Pavel Begunkov.
>
> rq->stats_sectors is set only when there is QUEUE_FLAG_STATS, see
> blk_mq_start_request(). I don't see blk-iocost requiring it. Did I miss something?

And there is no reason to not initialise it unconditionally.

--
Pavel Begunkov

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