linux-kernel - Re: [PATCH] blk-cgroup: Remove unnecessary rcu_read

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Message-ID: <YoKbHXZq5Knzl7LM@slm.duckdns.org>
Date:   Mon, 16 May 2022 08:42:37 -1000
From:   Tejun Heo <tj@...nel.org>
To:     bh1scw@...il.com
Cc:     axboe@...nel.dk, cgroups@...r.kernel.org,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        songmuchun@...edance.com
Subject: Re: [PATCH] blk-cgroup: Remove unnecessary rcu_read_lock/unlock()

On Tue, May 17, 2022 at 01:39:30AM +0800, bh1scw@...il.com wrote:
> From: Fanjun Kong <bh1scw@...il.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@...il.com>

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

Thanks.

-- 
tejun