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[209.85.220.65]) by mx.google.com with SMTPS id 80sor2437578ybf.129.2019.02.18.13.05.07 for (Google Transport Security); Mon, 18 Feb 2019 13:05:07 -0800 (PST) Received-SPF: pass (google.com: domain of htejun@gmail.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=IvUXzBPQ; spf=pass (google.com: domain of htejun@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=htejun@gmail.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=9DzCR79XKeIjL7+2ReBiux03I1IsbcYYGjv2zjhhJ2U=; b=IvUXzBPQJEIyKxoXbz4dX0We4ImmqwmBbZb8b00WHoEnhmrQvX86N2WSx0rP1NzXFS uwDuVGKTJxW0Bg0RNeRMY2lqSxHlylMUB1QW2kusIPBR/1eSRw3pLDFw0DxTiX4xKIJH HI39c8dzh86yRNfROF1J4MTzi+z8cRaElf9D2wcp1bxf3Ak2psiTe3TVvbaMcSCeL0xz 0v5+CKY58TFKGjYiJixaNyF/JCodpDsL5qER8CF0AdDGaUzq7o2WyEBYDVhxhqSvThX0 wA2HOyR7hXaqWcIJ88Uhcpnx5RhK0K7pvEyKDaPBn85ZliSQTNNAHNknlI/GapPFjD4Q 6KrA== X-Google-Smtp-Source: AHgI3IZQ85hICO8PJBHbJ2RZysx/uNUHQA80/Hg8S4A0SZHPMgNXU2TbgLlCgJHTrnqFDEdrI6avxw== X-Received: by 2002:a25:d04b:: with SMTP id h72mr15655803ybg.152.1550523907337; Mon, 18 Feb 2019 13:05:07 -0800 (PST) Received: from localhost ([2620:10d:c091:200::5:2c70]) by smtp.gmail.com with ESMTPSA id z23sm7007499ywj.36.2019.02.18.13.05.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Feb 2019 13:05:06 -0800 (PST) Date: Mon, 18 Feb 2019 13:05:04 -0800 From: Tejun Heo To: Yang Shi Cc: hannes@cmpxchg.org, corbet@lwn.net, cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] doc: cgroup: correct the wrong information about measure of memory pressure Message-ID: <20190218210504.GT50184@devbig004.ftw2.facebook.com> References: <1550278564-81540-1-git-send-email-yang.shi@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1550278564-81540-1-git-send-email-yang.shi@linux.alibaba.com> User-Agent: Mutt/1.5.21 (2010-09-15) 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: On Sat, Feb 16, 2019 at 08:56:04AM +0800, Yang Shi wrote: > 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. Maybe refer to PSI? Thanks. -- tejun