netdev - Re: [PATCH net-next v7 1/3] rculist: Add hlist_nulls_replace_rcu() and hlist_nulls_replace_init

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Message-ID: <f64b89b1-d01c-41d6-9158-e7c14d236d2d@redhat.com>
Date: Tue, 30 Sep 2025 11:16:00 +0200
From: Paolo Abeni <pabeni@...hat.com>
To: xuanqiang.luo@...ux.dev, edumazet@...gle.com, kuniyu@...gle.com,
 "Paul E. McKenney" <paulmck@...nel.org>
Cc: kerneljasonxing@...il.com, davem@...emloft.net, kuba@...nel.org,
 netdev@...r.kernel.org, Xuanqiang Luo <luoxuanqiang@...inos.cn>,
 Frederic Weisbecker <frederic@...nel.org>,
 Neeraj Upadhyay <neeraj.upadhyay@...nel.org>
Subject: Re: [PATCH net-next v7 1/3] rculist: Add hlist_nulls_replace_rcu()
 and hlist_nulls_replace_init_rcu()

On 9/26/25 9:40 AM, xuanqiang.luo@...ux.dev wrote:
> From: Xuanqiang Luo <luoxuanqiang@...inos.cn>
> 
> Add two functions to atomically replace RCU-protected hlist_nulls entries.
> 
> Keep using WRITE_ONCE() to assign values to ->next and ->pprev, as
> mentioned in the patch below:
> commit efd04f8a8b45 ("rcu: Use WRITE_ONCE() for assignments to ->next for
> rculist_nulls")
> commit 860c8802ace1 ("rcu: Use WRITE_ONCE() for assignments to ->pprev for
> hlist_nulls")
> 
> Signed-off-by: Xuanqiang Luo <luoxuanqiang@...inos.cn>

This deserves explicit ack from RCU maintainers.

Since we are finalizing the net-next PR, I suggest to defer this series
to the next cycle, to avoid rushing such request.

Thanks,

Paolo