From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7946A7262D for ; Thu, 25 Sep 2025 00:54:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758761691; cv=none; b=baOQaUZUh10Nw0I9iSgj910cqh6x+niJzSXMi30T119yal9nT39oxuzUbh71iOtDc9BrXBSUPdAZOcRgaNNwl6BRc8FNACzWljbobFlSLuForh5JkAggnW64WOqdw8//4b1Gx+pPE/KLFnEJQUgChFnQ2ZyJeo2DL3kmiEJL1x0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758761691; c=relaxed/simple; bh=Wo+ExzGD7y99w9KwqFXtuG0Du+5BfB/PlkbpjxqKNKc=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tzydfcJnO25S44Vj6SGDQUkSYp4xuufwwFjhY1jysMPCnaWg9Ya6GrU5LbQTIzFrBSN4nwNlNP1Xshf7MlaB4OXkblrfKwKZ15Dg1gaQ8YufNfTgUgTvguLCgsKqK3i8oJtr+G/XFlNkVgmEeQM3JUXdSWgUgYFg2g0Rs+GFCQM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qfmZGnZD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="qfmZGnZD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C6C8AC4CEE7; Thu, 25 Sep 2025 00:54:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758761691; bh=Wo+ExzGD7y99w9KwqFXtuG0Du+5BfB/PlkbpjxqKNKc=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=qfmZGnZDNgqzHtTT78TsUUF5Zmxf+GFYcwUCTHwtHTQlX3O/2XiDAdZYAAEOCX5Xv 89YK+2W35lL1xf7AGhqYb0+VaNAURqtoBWtN1YhNBNj/c/IdvfdKeup3RzYSF2MLZm nyBYYzmlNV1aasm49buaVx0MGgRFEli2RwGevF7CD5kcWjFXN/tT0/QEkIi0ZwYNDx hd1E0cPK3fbnkuMTNM8o+k+C1DjqWu+2qmUFd7ZhhzZVBiWWeq9GlPjcKIbJY2d0or kPfl/bJ2ireVg+dfg/xilj2jD/FKR9C0Yf27uCyXjY/9sAkIsiCYjFa1ZnWNaBHn09 DYwZhyM1vT6bg== Date: Wed, 24 Sep 2025 17:54:49 -0700 From: Jakub Kicinski To: xuanqiang.luo@linux.dev Cc: edumazet@google.com, kuniyu@google.com, kerneljasonxing@gmail.com, davem@davemloft.net, netdev@vger.kernel.org, Xuanqiang Luo Subject: Re: [PATCH net-next v5 1/3] rculist: Add hlist_nulls_replace_rcu() and hlist_nulls_replace_init_rcu() Message-ID: <20250924175449.36b71e48@kernel.org> In-Reply-To: <20250924015034.587056-2-xuanqiang.luo@linux.dev> References: <20250924015034.587056-1-xuanqiang.luo@linux.dev> <20250924015034.587056-2-xuanqiang.luo@linux.dev> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Wed, 24 Sep 2025 09:50:32 +0800 xuanqiang.luo@linux.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.