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Thu, 13 Feb 2020 07:52:50 -0800 (PST) Received: from localhost ([2620:10d:c091:500::1:f3be]) by smtp.gmail.com with ESMTPSA id 65sm1639533qtf.95.2020.02.13.07.52.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Feb 2020 07:52:50 -0800 (PST) Date: Thu, 13 Feb 2020 10:52:49 -0500 From: Tejun Heo To: Michal Hocko Cc: Johannes Weiner , Andrew Morton , Roman Gushchin , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@fb.com Subject: Re: [PATCH v2 3/3] mm: memcontrol: recursive memory.low protection Message-ID: <20200213155249.GI88887@mtj.thefacebook.com> References: <20191219200718.15696-1-hannes@cmpxchg.org> <20191219200718.15696-4-hannes@cmpxchg.org> <20200130170020.GZ24244@dhcp22.suse.cz> <20200203215201.GD6380@cmpxchg.org> <20200211164753.GQ10636@dhcp22.suse.cz> <20200212170826.GC180867@cmpxchg.org> <20200213074049.GA31689@dhcp22.suse.cz> <20200213135348.GF88887@mtj.thefacebook.com> <20200213154731.GE31689@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200213154731.GE31689@dhcp22.suse.cz> 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: Hello, On Thu, Feb 13, 2020 at 04:47:31PM +0100, Michal Hocko wrote: > Well, I would tend to agree but I can see an existing cgroup hierarchy > imposed by systemd and that is more about "logical" organization of > processes based on their purpose than anything resembling resources. > So what can we do about that to make it all work? systemd right now isn't configuring any resource control by default, so I'm not sure why it is relevant in this discussion. You gotta change the layout to configure resource control no matter what and it's pretty easy to do. systemd folks are planning to integrate higher level resource control features, so my expectation is that the default layout is gonna change as it develops. Thanks. -- tejun