linux-kernel - Re: [PATCH -next v3] block, bfq: cleanup 'bfqg->online'

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Date:   Tue, 07 Feb 2023 10:21:16 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     jack@...e.cz, paolo.valente@...aro.org, tj@...nel.org,
        josef@...icpanda.com, Yu Kuai <yukuai1@...weicloud.com>
Cc:     linux-block@...r.kernel.org, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, yukuai3@...wei.com,
        yi.zhang@...wei.com, yangerkun@...wei.com
Subject: Re: [PATCH -next v3] block, bfq: cleanup 'bfqg->online'


On Thu, 02 Feb 2023 21:49:13 +0800, Yu Kuai wrote:
> After commit dfd6200a0954 ("blk-cgroup: support to track if policy is
> online"), there is no need to do this again in bfq.
> 
> However, 'pd->online' is not protected by 'bfqd->lock', in order to make
> sure bfq won't see that 'pd->online' is still set after bfq_pd_offline(),
> clear it before bfq_pd_offline() is called. This is fine because other
> polices doesn't use 'pd->online' and bfq_pd_offline() will move active
> bfqq to root cgroup anyway.
> 
> [...]

Applied, thanks!

[1/1] block, bfq: cleanup 'bfqg->online'
      commit: f37bf75ca73d523ebaa7ceb44c45d8ecd05374fe

Best regards,
-- 
Jens Axboe