From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 A7D543B83FC for ; Tue, 15 Sep 2026 13:01:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789477274; cv=none; b=jYkGmDR2vwb3AbZ6HG0avhlcF1AZkJzxpblRlJ2uyV3NgH3nm+iUNMN9ObX4Ihi3rMOv174s4ftNniuTdsmw++k1aRonuRkAXGabYcA6ueXVqT+zdk64D+mtH1oTl63XZDLlRsNxhCKdxEUVoyFoJn+82MK7hwlnA9fcQBqUgPY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789477274; c=relaxed/simple; bh=if1M6z/u/A2ScTi/uYkx9JHuYgEW8SweK2xkbcz1j8M=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=Ey7pPvHIU7C153ewnhuECF4tJxFqy9u6vbEXLNmnbOWPPTwa70hhssTvTVQCoK0lxG31JorwYMIg8MnlnAKW9Q+MuDwTDdQSYaMsLUeYNkqSJrvdnXt2tYs2E4mCLnpY6E1kvLKjUNLUkFvz06NgSs1xWsCoYvMcF8qDrZo3sD4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LjHDvE4I; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LjHDvE4I" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 35C1F1F000FF; Tue, 15 Sep 2026 13:01:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789477273; bh=2EEe0E8cI9tTxwJBmp1Y7lDL0YykHEKCtrU1an42H4M=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=LjHDvE4ImpkTA8Sdz7l7d2AsS1tSNCkF0zey/O/t59Fkrb+nqxN0anYVkbWtMtFJe nLKI/GnNgZuKRV60n9UUBBLfDccmW90Fu+iSFIIAeuIhN7xKTvJ6FSTjSoqhKrczoa 9R9lErzEIuufsXCLELn2MtVetY0jZN3J/XxKuOuHNa+WBTdFULxUIDSmkGkZApL6yb 2mLMpmm0CkmOXnBaCq93OKpPQWDVyct4cK8Q1qmOK0iNSfU/3YHCZI6pL+mwyLg9fG O01ZHu7IeXD53uYQI2MQRkqV8t/PYGtmIo0qkEULJx5CzIrV0AgwQhF8LIeODCm1Qo OxrKhw7JcXYXg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 196B539263A4; Tue, 15 Sep 2026 13:00:09 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net-next] tcp: make smp_rmb() conditional in tcp_poll() From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178947720787.1607766.4672913101588270762.git-patchwork-notify@kernel.org> Date: Tue, 15 Sep 2026 13:00:07 +0000 References: <20260913123224.762935-1-edumazet@google.com> In-Reply-To: <20260913123224.762935-1-edumazet@google.com> To: Eric Dumazet Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, ncardwell@google.com, kuniyu@google.com, netdev@vger.kernel.org, eric.dumazet@gmail.com Hello: This patch was applied to netdev/net-next.git (main) by Paolo Abeni : On Sun, 13 Sep 2026 12:32:24 +0000 you wrote: > Commit a4d258036ed9 ("tcp: Fix race in tcp_poll") added smp_rmb() in > tcp_poll() and smp_wmb() in tcp_reset() (now tcp_done_with_error()) > to ensure that if tcp_poll() observed socket closure, it would also > observe sk->sk_err. > > Currently, tcp_poll() unconditionally executes smp_rmb() at the end > of every invocation, which on weakly-ordered architectures such as ARM64 > emits a memory barrier instruction (dmb ishld) on the poll fast path, > even for healthy, active sockets. > > [...] Here is the summary with links: - [net-next] tcp: make smp_rmb() conditional in tcp_poll() https://git.kernel.org/netdev/net-next/c/e8c06b895281 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html