From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755451AbdJIVLL (ORCPT ); Mon, 9 Oct 2017 17:11:11 -0400 Received: from mail-pf0-f170.google.com ([209.85.192.170]:46290 "EHLO mail-pf0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755039AbdJIVLI (ORCPT ); Mon, 9 Oct 2017 17:11:08 -0400 X-Google-Smtp-Source: AOwi7QBVcHVcyyCTs6vx8dBkFtb5JxuuIoS7VvyJ9B2jbnsUmVcSqHwkEjF8ixbVS6OF8tOr8LmI6w== Date: Mon, 9 Oct 2017 14:11:07 -0700 (PDT) From: David Rientjes X-X-Sender: rientjes@chino.kir.corp.google.com To: Roman Gushchin cc: linux-mm@kvack.org, Vladimir Davydov , Johannes Weiner , Tetsuo Handa , Andrew Morton , Tejun Heo , kernel-team@fb.com, cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [v11 2/6] mm: implement mem_cgroup_scan_tasks() for the root memory cgroup In-Reply-To: <20171005130454.5590-3-guro@fb.com> Message-ID: References: <20171005130454.5590-1-guro@fb.com> <20171005130454.5590-3-guro@fb.com> User-Agent: Alpine 2.10 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 5 Oct 2017, Roman Gushchin wrote: > Implement mem_cgroup_scan_tasks() functionality for the root > memory cgroup to use this function for looking for a OOM victim > task in the root memory cgroup by the cgroup-ware OOM killer. > > The root memory cgroup is treated as a leaf cgroup, so only tasks > which are directly belonging to the root cgroup are iterated over. > > This patch doesn't introduce any functional change as > mem_cgroup_scan_tasks() is never called for the root memcg. > This is preparatory work for the cgroup-aware OOM killer, > which will use this function to iterate over tasks belonging > to the root memcg. > > Signed-off-by: Roman Gushchin Acked-by: David Rientjes