linux-kernel - Re: [PATCH -next RFC] block: count 'ios' and 'sectors' when io is done for bio-based device

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Date:   Wed, 15 Mar 2023 09:25:39 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     agk@...hat.com, snitzer@...nel.org, dm-devel@...hat.com,
        kbusch@...nel.org, hch@....de, sagi@...mberg.me,
        guz.fnst@...fujitsu.com, Yu Kuai <yukuai1@...weicloud.com>
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nvme@...ts.infradead.org, yukuai3@...wei.com,
        yi.zhang@...wei.com, yangerkun@...wei.com
Subject: Re: [PATCH -next RFC] block: count 'ios' and 'sectors' when io is
 done for bio-based device


On Thu, 23 Feb 2023 17:12:26 +0800, Yu Kuai wrote:
> While using iostat for raid, I observed very strange 'await'
> occasionally, and turns out it's due to that 'ios' and 'sectors' is
> counted in bdev_start_io_acct(), while 'nsecs' is counted in
> bdev_end_io_acct(). I'm not sure why they are ccounted like that
> but I think this behaviour is obviously wrong because user will get
> wrong disk stats.
> 
> [...]

Applied, thanks!

[1/1] block: count 'ios' and 'sectors' when io is done for bio-based device
      commit: 5f27571382ca42daa3e3d40d1b252bf18c2b61d2

Best regards,
-- 
Jens Axboe