From: Tejun Heo <tj@kernel.org>
To: bh1scw@gmail.com
Cc: axboe@kernel.dk, cgroups@vger.kernel.org,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
songmuchun@bytedance.com
Subject: Re: [PATCH] blk-cgroup: Remove unnecessary rcu_read_lock/unlock()
Date: Mon, 16 May 2022 08:42:37 -1000 [thread overview]
Message-ID: <YoKbHXZq5Knzl7LM@slm.duckdns.org> (raw)
In-Reply-To: <20220516173930.159535-1-bh1scw@gmail.com>
On Tue, May 17, 2022 at 01:39:30AM +0800, 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>
Acked-by: Tejun Heo <tj@kernel.org>
Thanks.
--
tejun
next prev parent reply other threads:[~2022-05-16 18:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-16 17:39 [PATCH] blk-cgroup: Remove unnecessary rcu_read_lock/unlock() bh1scw
2022-05-16 18:42 ` Tejun Heo [this message]
2022-05-17 4:11 ` Muchun Song
2022-05-17 12:13 ` Jens Axboe
[not found] ` <CGME20220518192850eucas1p1458c00d4917c5ed39f2c37c9eb30cd46@eucas1p1.samsung.com>
2022-05-18 19:28 ` Marek Szyprowski
2022-05-18 22:29 ` Jens Axboe
2022-05-18 22:31 ` Jens Axboe
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