linux-kernel - Re: [PATCH 1/8] blkcg, writeback: Add wbc->no_wbc

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Message-ID: <20190614134117.pngediuiim7ktcvi@MacBook-Pro-91.local>
Date:   Fri, 14 Jun 2019 09:41:18 -0400
From:   Josef Bacik <josef@...icpanda.com>
To:     Tejun Heo <tj@...nel.org>
Cc:     dsterba@...e.com, clm@...com, josef@...icpanda.com,
        axboe@...nel.dk, jack@...e.cz, linux-btrfs@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        kernel-team@...com
Subject: Re: [PATCH 1/8] blkcg, writeback: Add wbc->no_wbc_acct

On Thu, Jun 13, 2019 at 05:33:43PM -0700, Tejun Heo wrote:
> When writeback IOs are bounced through async layers, the IOs should
> only be accounted against the wbc from the original bdi writeback to
> avoid confusing cgroup inode ownership arbitration.  Add
> wbc->no_wbc_acct to allow disabling wbc accounting.  This will be used
> make btfs compression work well with cgroup IO control.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>

Reviewed-by: Josef Bacik <josef@...icpanda.com>

Thanks,

Josef