linux-kernel - Re: [PATCH] blk-cgroup: don't account iostat for root cgroup

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Message-ID: <20200602025121.GG31548@mtj.thefacebook.com>
Date:   Mon, 1 Jun 2020 22:51:21 -0400
From:   Tejun Heo <tj@...nel.org>
To:     Boris Burkov <boris@....io>
Cc:     Jens Axboe <axboe@...nel.dk>, cgroups@...r.kernel.org,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-team@...com
Subject: Re: [PATCH] blk-cgroup: don't account iostat for root cgroup

On Mon, Jun 01, 2020 at 04:11:41PM -0700, Boris Burkov wrote:
> This data is never flushed by rstat, so it is never used. We shouldn't
> bother collecting it. We can access global disk stats to compute io
> statistics for the root cgroup.
> 
> Signed-off-by: Boris Burkov <boris@....io>

Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun