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[2604:1380:4601:e00::3]) by mx.google.com with ESMTPS id g18-20020a0564021ed200b00560ae160e34si685286edg.584.2024.02.06.05.07.00 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Feb 2024 05:07:00 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-54990-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=jw6VHZF6; arc=pass (i=1 dkim=pass dkdomain=kernel.org); spf=pass (google.com: domain of linux-kernel+bounces-54990-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) smtp.mailfrom="linux-kernel+bounces-54990-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by am.mirrors.kernel.org (Postfix) with ESMTPS id E39F71F25F49 for ; Tue, 6 Feb 2024 13:06:51 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4B87D130AD2; Tue, 6 Feb 2024 13:06:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="jw6VHZF6" 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 5F4BD2BCE8; Tue, 6 Feb 2024 13:06:42 +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=1707224802; cv=none; b=KCJH4NdKlEvw8Ur01+sIYEHvPmSDKSJOd0RnbWi5x6a1FwC3uJQCsP8VKcJjzHT3EzAjzPQlx2Tp+hJL4rk1HNYx1FwSAmtTtN8eawjh5e+8KXuddsCKbMXAzRj2AxVemxmhymJkJ9MnpitrYxvMC/agjm4vjrgyB5pKHG2YEbQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707224802; c=relaxed/simple; bh=znXXXW+2+UB9AsEyxME9EuhEuQIpcxvc7+GfF1GzZFU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=GfDzXjTg54GDjTE0bit5WS0JqZqKUiDXNu/sTRJngSK4vApg+49ALbSbcXQrM39R5YzwYZuSS+9Bb4u9OYT4xUBFUi2qRbV5Q/p4jXOJVY6OTuclxkMhwY+jhgyqKfq4nW0qW8XxLKKzib8q8oJ59FuPzAaNqOW0Pqsd8/1OXGg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jw6VHZF6; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id A466FC433F1; Tue, 6 Feb 2024 13:06:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707224802; bh=znXXXW+2+UB9AsEyxME9EuhEuQIpcxvc7+GfF1GzZFU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=jw6VHZF6iUptl85cKX1PPVXX4FACo42dcGe0SWJ97OUwzAoSfIRs/+z0Zxg3rkX5l zttq5RoV7pU+np3o95pY6B8Lz6mjd436c9gOKn+Kh/ex0q13ekQKNoY4ASzXYgFRVL ++8EkbaxiJPkq5GhoFRRnsnLot+fVQdz0hP78EAtmeRcff9/c+kpIGYtqnM7fJRATC G54hdqsCH6cDUNZKVt+owZvCbxrTDjfZFfdQd+JJHBAEvbnxKIWiEU8cBW0bHwryzJ kdg07Z/PqXMyc6EOiyr1bhKp8JfXYw4kvkDYYaNS7Y3LxLPNdcBxHEHbH6cEoJuzU0 q4QKL1A+X7EOA== Date: Tue, 6 Feb 2024 14:06:36 +0100 From: Christian Brauner To: Matthew Wilcox Cc: JonasZhou , CobeChen@zhaoxin.com, JonasZhou@zhaoxin.com, LouisQi@zhaoxin.com, jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk Subject: Re: [PATCH] fs/address_space: move i_mmap_rwsem to mitigate a false sharing with i_mmap. Message-ID: <20240206-beinbruch-unverantwortlich-03a9093aa161@brauner> References: <20240205062229.5283-1-jonaszhou-oc@zhaoxin.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: > Got it. OK, let's put this patch in. It's a stopgap measure, clearly. > I'll reply to Dave's email with a longer term solution. Fyi, I've picked this up yesterday. You should've gotten a notification hopefully.