linux-kernel - Re: [PATCH] block/bfq: the delta_from

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Message-ID: <fd992897-2ef6-f574-eb07-5223fc6b1af5@kernel.dk>
Date:   Wed, 21 Jul 2021 10:19:22 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Paolo Valente <paolo.valente@...aro.org>,
        liubaozhu <liubaozhu@...ontech.com>
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] block/bfq: the delta_from_first should be ns rather than
 us

On 7/21/21 1:54 AM, Paolo Valente wrote:
> 
> 
>> Il giorno 21 lug 2021, alle ore 08:30, liubaozhu <liubaozhu@...ontech.com <mailto:liubaozhu@...ontech.com>> ha scritto:
>>
>> In the block/bfq-iosched.c,the function bfq_update_peak_rate(),
>> bfqd->delta_from_first = now_ns - bfqd->first_dispatch,
>> according to the subtraction operation here,now_ns is ns,
>> and bfqd->first_dispatch is also ns,so bfqd->delta_from_first should be ns.
>>
> 
> Correct!
> 
> Acked-by: Paolo Valente <paolo.valente@...aro.org <mailto:paolo.valente@...aro.org>>

Just pick this up for your 5.15 series and include it in that.

-- 
Jens Axboe