From patchwork Sat Feb 16 00:56:04 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yang Shi X-Patchwork-Id: 10816117 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9FE8613B5 for ; Sat, 16 Feb 2019 00:56:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 871282FB20 for ; Sat, 16 Feb 2019 00:56:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7ABC12FBB0; Sat, 16 Feb 2019 00:56:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A8BCC2FB20 for ; Sat, 16 Feb 2019 00:56:20 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 46C6A8E0002; Fri, 15 Feb 2019 19:56:19 -0500 (EST) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 41B838E0001; Fri, 15 Feb 2019 19:56:19 -0500 (EST) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 36AD08E0002; Fri, 15 Feb 2019 19:56:19 -0500 (EST) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from mail-pg1-f199.google.com (mail-pg1-f199.google.com [209.85.215.199]) by kanga.kvack.org (Postfix) with ESMTP id 043F68E0001 for ; Fri, 15 Feb 2019 19:56:19 -0500 (EST) Received: by mail-pg1-f199.google.com with SMTP id j32so8003317pgm.5 for ; Fri, 15 Feb 2019 16:56:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:from:to:cc :subject:date:message-id; bh=2N2EWSe2QIjfFUIlI7BzyvrKm4weSNV599whd376Ke4=; b=pQUfJfp6NlwS01WPnGSNANaziu3m4e84Tp45TK/gQNbj4Ad2s02NDY5J1XRhgA/SCg ujaSofGxRDZyOq+BbK0DwsXf7nY+a2KV+oRtfXRS6jyrz9xW0BWsRqpVDujk0TenwA3a yBv0Epz4DchnoQjWYP+WjD+2n/7n3DaS/vxYA4AmC1x5KD+wEDEdcCyvm/V9ZS7DZIrz DXZESgehWrLdaEQySKozSsZL1r/utVDzB2tnhJuBkZLy49Smm8fOQmGnNxvW1WO90GQa vStH17wjEuG+tvPZNeDdEvYM/RxzPtut3dSEQLXXYYrdJNUtPZs8E7Rs4FIayEoC9HzU 7SOA== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of yang.shi@linux.alibaba.com designates 115.124.30.42 as permitted sender) smtp.mailfrom=yang.shi@linux.alibaba.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alibaba.com X-Gm-Message-State: AHQUAuZkUFReTF/27rFGghLWcUCwBmrKsjl2CLDaD5xlAXhifjvUJSaP JYg9ixTYHCU6pRupddt7RpANE3qOvgJDqm9KlBXq1ZNyxymdF13wc9yvi78/R+3I0CCjMsUGe4K TvoPeUda3s3ACRwhMuVJvmbtuXs+RXJYqLvNiua4EWE09oMS1YUzr9ez8X+6xier+dQ== X-Received: by 2002:a62:569b:: with SMTP id h27mr12275659pfj.163.1550278578580; Fri, 15 Feb 2019 16:56:18 -0800 (PST) X-Google-Smtp-Source: AHgI3IaQmUo4DAaw+ea6Sm2wMmxRhUk506gS2c3tSUKWkFevAVr2Hgv4rghOE7vs4885qR8a88Nl X-Received: by 2002:a62:569b:: with SMTP id h27mr12275613pfj.163.1550278577820; Fri, 15 Feb 2019 16:56:17 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1550278577; cv=none; d=google.com; s=arc-20160816; b=hfV4uV7DW9Uw5ttZxVVxTzAr3EE7XH4qYUaf/lE6f7XPw/cdfypNXhS6IfZom/zU5+ zXUh5iV8RBRK4uw8/TeNVhFFIpFCgGB0d7eo1Yc9TFB98didy684wE28CLrFzKjCWnqB gdwp7NQUbe2VwnAG6za4F/mqbd8zaUU1iJEHMA1gb9DEVza4KnzB9chR82+gTh0QaG9N 4Hxma6wGbH/TqfOmeszNUTyJcPbRLrS+73RgMbUg2ZqaT1qcLHVT2uIxJkBKFsOywT6p JMk5vjdaUjvNuKXrm31thDZqxTOEj2n2lql4zEWS3cHMyZ39YSWrqB9AaWD0g57xwT3D pDog== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=message-id:date:subject:cc:to:from; bh=2N2EWSe2QIjfFUIlI7BzyvrKm4weSNV599whd376Ke4=; b=gWug9g9HcuByqFt2EvTk/FuaroCgeSD/2R+n18VeaC3vTdzuOMLzYbnEi9SZSUN32F 7Z+xGE9j40uRF/OyGFDuSb3lZlUb0VI5unsICMKDA/jEdFk+d1rgaMOb2ibJj3onWnKQ 5P+lLqhfho3ORl0N667Rk1dXdGoQ8to3BCjHrKPaiYDrB/dInqgr/W0RHSbUPE+6xLl/ EMFn/zfPdtHXBiApLEjiEUVzMxjLJYUWbjHAhbwxhdsBEaeXoJmNXUgZwPjh85o1gLaL uHUVE5dLLCjq+9mznWtTgwGW2bpvreEAPpQYPNTAJscnzwZjGBV6VsS/I6hoha19+R2x 0Krg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of yang.shi@linux.alibaba.com designates 115.124.30.42 as permitted sender) smtp.mailfrom=yang.shi@linux.alibaba.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Received: from out30-42.freemail.mail.aliyun.com (out30-42.freemail.mail.aliyun.com. [115.124.30.42]) by mx.google.com with ESMTPS id l192si2454871pge.280.2019.02.15.16.56.16 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 15 Feb 2019 16:56:17 -0800 (PST) Received-SPF: pass (google.com: domain of yang.shi@linux.alibaba.com designates 115.124.30.42 as permitted sender) client-ip=115.124.30.42; Authentication-Results: mx.google.com; spf=pass (google.com: domain of yang.shi@linux.alibaba.com designates 115.124.30.42 as permitted sender) smtp.mailfrom=yang.shi@linux.alibaba.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alibaba.com X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R181e4;CH=green;DM=||false|;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e01424;MF=yang.shi@linux.alibaba.com;NM=1;PH=DS;RN=7;SR=0;TI=SMTPD_---0TKBzhpr_1550278564; Received: from e19h19392.et15sqa.tbsite.net(mailfrom:yang.shi@linux.alibaba.com fp:SMTPD_---0TKBzhpr_1550278564) by smtp.aliyun-inc.com(127.0.0.1); Sat, 16 Feb 2019 08:56:15 +0800 From: Yang Shi To: tj@kernel.org, hannes@cmpxchg.org, corbet@lwn.net Cc: yang.shi@linux.alibaba.com, cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH] doc: cgroup: correct the wrong information about measure of memory pressure Date: Sat, 16 Feb 2019 08:56:04 +0800 Message-Id: <1550278564-81540-1-git-send-email-yang.shi@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: X-Virus-Scanned: ClamAV using ClamSMTP Since PSI has implemented some kind of measure of memory pressure, the statement about lack of such measure is not true anymore. Cc: Tejun Heo Cc: Johannes Weiner Cc: Jonathan Corbet Signed-off-by: Yang Shi --- Documentation/admin-guide/cgroup-v2.rst | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst index 7bf3f12..9a92013 100644 --- a/Documentation/admin-guide/cgroup-v2.rst +++ b/Documentation/admin-guide/cgroup-v2.rst @@ -1310,8 +1310,7 @@ network to a file can use all available memory but can also operate as performant with a small amount of memory. A measure of memory pressure - how much the workload is being impacted due to lack of memory - is necessary to determine whether a workload needs more -memory; unfortunately, memory pressure monitoring mechanism isn't -implemented yet. +memory. Memory Ownership