From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michal Hocko Subject: Re: [patch -mm 3/4] mm, memcg: replace memory.oom_group with policy tunable Date: Thu, 25 Jan 2018 09:11:34 +0100 Message-ID: <20180125081134.GL28465@dhcp22.suse.cz> References: <20180117154155.GU3460072@devbig577.frc2.facebook.com> <20180120123251.GB1096857@devbig577.frc2.facebook.com> <20180123155301.GS1526@dhcp22.suse.cz> <20180124082041.GD1526@dhcp22.suse.cz> <20180124140805.b4eb437c6fe9dadb67a32e8a@linux-foundation.org> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <20180124140805.b4eb437c6fe9dadb67a32e8a-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> Sender: cgroups-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Andrew Morton Cc: David Rientjes , Tejun Heo , Roman Gushchin , Vladimir Davydov , Johannes Weiner , Tetsuo Handa , kernel-team-b10kYP2dOMg@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org On Wed 24-01-18 14:08:05, Andrew Morton wrote: [...] > Can we please try to narrow the scope of this issue by concentrating on > the userspace interfaces? David believes that the mount option and > memory.oom_group will disappear again in the near future, others > disagree. Mount option is the cgroups maintainers call. And they seemed to be OK with it. I've tried to explain that oom_group is something that is semantically sane and something we want to support because there are workloads which simply do not work properly when only a subset is torn down. As such it is not an API hazard AFAICS. -- Michal Hocko SUSE Labs