linux-kernel - Re: [PATCH 4/4] writeback: remove bdi->congested

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Date:   Wed, 1 Jul 2020 22:36:13 -0700
From:   Song Liu <song@...nel.org>
To:     Christoph Hellwig <hch@....de>
Cc:     Jens Axboe <axboe@...nel.dk>, Tejun Heo <tj@...nel.org>,
        dm-devel@...hat.com, cgroups@...r.kernel.org,
        linux-block@...r.kernel.org, drbd-dev@...ts.linbit.com,
        linux-bcache@...r.kernel.org,
        linux-raid <linux-raid@...r.kernel.org>,
        linux-btrfs@...r.kernel.org, Linux-MM <linux-mm@...ck.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/4] writeback: remove bdi->congested_fn

On Wed, Jul 1, 2020 at 2:06 AM Christoph Hellwig <hch@....de> wrote:
>
> Except for pktdvd, the only places setting congested bits are file
> systems that allocate their own backing_dev_info structures.  And
> pktdvd is a deprecated driver that isn't useful in stack setup
> either.  So remove the dead congested_fn stacking infrastructure.
>
> Signed-off-by: Christoph Hellwig <hch@....de>

For md bits:

Acked-by: Song Liu <song@...nel.org>