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References: <20220516173930.159535-1-bh1scw@gmail.com>
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From:   Muchun Song <songmuchun@bytedance.com>
Date:   Tue, 17 May 2022 12:11:08 +0800
Message-ID: <CAMZfGtU8GYN6aLepHr3z=AvJ4XivmWpPdnvUBgaJUnmf37-28Q@mail.gmail.com>
Subject: Re: [PATCH] blk-cgroup: Remove unnecessary rcu_read_lock/unlock()
To:     bh1scw@gmail.com
Cc:     Tejun Heo <tj@kernel.org>, Jens Axboe <axboe@kernel.dk>,
        Cgroups <cgroups@vger.kernel.org>,
        "open list:BLOCK LAYER" <linux-block@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
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On Tue, May 17, 2022 at 1:39 AM <bh1scw@gmail.com> wrote:
>
> From: Fanjun Kong <bh1scw@gmail.com>
>
> spin_lock_irq/spin_unlock_irq contains preempt_disable/enable().
> Which can serve as RCU read-side critical region, so remove
> rcu_read_lock/unlock().
>
> Signed-off-by: Fanjun Kong <bh1scw@gmail.com>

Reviewed-by: Muchun Song <songmuchun@bytedance.com>

Thanks.