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Fri, 20 Aug 2021 07:29:38 -0700 (PDT) MIME-Version: 1.0 References: <1629417219-74853-1-git-send-email-wang.yong12@zte.com.cn> In-Reply-To: From: yong w Date: Fri, 20 Aug 2021 22:29:27 +0800 Message-ID: Subject: Re: [PATCH v2] mm: Add configuration to control whether vmpressure notifier is enabled To: Shakeel Butt Cc: Tejun Heo , Jonathan Corbet , Andrew Morton , Michal Hocko , Vladimir Davydov , Thomas Gleixner , "Peter Zijlstra (Intel)" , Roman Gushchin , alexs@kernel.org, Wei Yang , Hui Su , Stephen Rothwell , wang.yong12@zte.com.cn, Cgroups , linux-doc@vger.kernel.org, LKML , Linux MM , yang.yang29@zte.com.cn, wangyong Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 65386B0000AD Authentication-Results: imf24.hostedemail.com; dkim=pass header.d=gmail.com header.s=20161025 header.b=TWeYTHvG; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf24.hostedemail.com: domain of yongwpur@gmail.com designates 209.85.218.41 as permitted sender) smtp.mailfrom=yongwpur@gmail.com X-Rspamd-Server: rspam04 X-Stat-Signature: agwn1xdnf5xpuhmykf5cmkjkrxymsju7 X-HE-Tag: 1629469779-188317 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: Shakeel Butt =E4=BA=8E2021=E5=B9=B48=E6=9C=8820=E6=97= =A5=E5=91=A8=E4=BA=94 =E4=B8=8B=E5=8D=887:42=E5=86=99=E9=81=93=EF=BC=9A > > On Thu, Aug 19, 2021 at 4:54 PM wrote: > > > > From: wangyong > > > > Inspired by PSI features, vmpressure inotifier function should > > also be configured to decide whether it is used, because it is an > > independent feature which notifies the user of memory pressure. > > > > It is also used by the networking stack to check memory pressure. See > mem_cgroup_under_socket_pressure(). Thanks for your replly, mem_cgroup_under_socket_pressure does use vmpressu= e, I'll check it.