netdev - Re: [PATCH net-next v5 1/3] rculist: Add hlist_nulls_replace_rcu() and hlist_nulls_replace_init

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Message-ID: <20250924175449.36b71e48@kernel.org>
Date: Wed, 24 Sep 2025 17:54:49 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: xuanqiang.luo@...ux.dev
Cc: edumazet@...gle.com, kuniyu@...gle.com, kerneljasonxing@...il.com,
 davem@...emloft.net, netdev@...r.kernel.org, Xuanqiang Luo
 <luoxuanqiang@...inos.cn>
Subject: Re: [PATCH net-next v5 1/3] rculist: Add hlist_nulls_replace_rcu()
 and hlist_nulls_replace_init_rcu()

On Wed, 24 Sep 2025 09:50:32 +0800 xuanqiang.luo@...ux.dev wrote:
> 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")

You most definitely have to CC RCU maintainers on this patch.