From: Michal Hocko <mhocko@suse.cz>
To: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
Andrew Morton <akpm@linux-foundation.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
cgroups@vger.kernel.org
Subject: Re: [patch 1/2] mm, memcg: avoid oom notification when current needs access to memory reserves
Date: Thu, 12 Dec 2013 13:11:40 +0100 [thread overview]
Message-ID: <20131212121140.GD2630@dhcp22.suse.cz> (raw)
In-Reply-To: <20131212103159.GB2630@dhcp22.suse.cz>
On Thu 12-12-13 11:31:59, Michal Hocko wrote:
[...]
> The semantic would be as simple as "notification is sent only when
> an action is due". It will be still racy as nothing prevents a task
> which is not under OOM to exit and release some memory but there is no
> sensible way to address that. On the other hand such a semantic would be
> sensible for oom_control listeners because they will know that an action
> has to be or will be taken (the line was drawn).
>
> Can we agree on this, Johannes? Or you see the line drawn when
> mem_cgroup_oom_synchronize has been reached already no matter whether
> the action is to be done or not?
Something like the following:
next prev parent reply other threads:[~2013-12-12 12:11 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-31 1:39 [patch] mm, memcg: add memory.oom_control notification for system oom David Rientjes
2013-10-31 5:49 ` Johannes Weiner
2013-11-13 22:19 ` David Rientjes
2013-11-13 23:34 ` Johannes Weiner
2013-11-14 0:56 ` David Rientjes
2013-11-14 3:25 ` Johannes Weiner
2013-11-14 22:57 ` David Rientjes
2013-11-14 23:26 ` [patch 1/2] mm, memcg: avoid oom notification when current needs access to memory reserves David Rientjes
2013-11-14 23:26 ` [patch 2/2] mm, memcg: add memory.oom_control notification for system oom David Rientjes
2013-11-18 18:52 ` Michal Hocko
2013-11-19 1:25 ` David Rientjes
2013-11-19 12:41 ` Michal Hocko
2013-11-18 12:52 ` [patch 1/2] mm, memcg: avoid oom notification when current needs access to memory reserves Michal Hocko
2013-11-18 12:55 ` Michal Hocko
2013-11-19 1:19 ` David Rientjes
2013-11-18 15:41 ` Johannes Weiner
2013-11-18 16:51 ` Michal Hocko
2013-11-19 1:22 ` David Rientjes
2013-11-22 16:51 ` Johannes Weiner
2013-11-27 0:53 ` David Rientjes
2013-11-27 16:34 ` Johannes Weiner
2013-11-27 21:51 ` David Rientjes
2013-11-27 23:19 ` Johannes Weiner
2013-11-28 0:22 ` David Rientjes
2013-11-28 2:28 ` Johannes Weiner
2013-11-28 2:52 ` David Rientjes
2013-11-28 3:16 ` Johannes Weiner
2013-12-02 20:02 ` Michal Hocko
2013-12-02 21:25 ` Johannes Weiner
2013-12-03 12:04 ` Michal Hocko
2013-12-03 20:17 ` Johannes Weiner
2013-12-03 21:00 ` Michal Hocko
2013-12-03 21:23 ` Johannes Weiner
2013-12-03 23:50 ` David Rientjes
2013-12-04 3:34 ` Johannes Weiner
2013-12-04 11:13 ` Michal Hocko
2013-12-05 0:23 ` David Rientjes
2013-12-09 12:48 ` Michal Hocko
2013-12-09 21:46 ` David Rientjes
2013-12-09 22:51 ` Johannes Weiner
2013-12-09 23:05 ` Johannes Weiner
2014-01-10 0:34 ` David Rientjes
2013-12-10 10:38 ` Michal Hocko
2013-12-11 1:03 ` David Rientjes
2013-12-11 9:55 ` Michal Hocko
2013-12-11 22:40 ` David Rientjes
2013-12-12 10:31 ` Michal Hocko
2013-12-12 10:50 ` Michal Hocko
2013-12-12 12:11 ` Michal Hocko [this message]
2013-12-12 12:37 ` Michal Hocko
2013-12-13 23:55 ` David Rientjes
2013-12-17 16:23 ` Michal Hocko
2013-12-17 20:50 ` David Rientjes
2013-12-18 20:04 ` Michal Hocko
2013-12-19 6:09 ` David Rientjes
2013-12-19 14:41 ` Michal Hocko
2014-01-08 0:25 ` Andrew Morton
2014-01-08 10:33 ` Michal Hocko
2014-01-09 14:30 ` [PATCH] memcg: Do not hang on OOM when killed by userspace OOM " Michal Hocko
2014-01-09 21:40 ` David Rientjes
2014-01-10 8:23 ` Michal Hocko
2014-01-10 21:33 ` David Rientjes
2014-01-15 14:26 ` Michal Hocko
2014-01-15 21:19 ` David Rientjes
2014-01-16 10:12 ` Michal Hocko
2014-01-21 6:13 ` David Rientjes
2014-01-21 13:21 ` Michal Hocko
2014-01-09 21:34 ` [patch 1/2] mm, memcg: avoid oom notification when current needs " David Rientjes
2014-01-09 22:47 ` Andrew Morton
2014-01-10 0:01 ` David Rientjes
2014-01-10 0:12 ` Andrew Morton
2014-01-10 0:23 ` David Rientjes
2014-01-10 0:35 ` David Rientjes
2014-01-10 22:14 ` Johannes Weiner
2014-01-12 22:10 ` David Rientjes
2014-01-15 14:34 ` Michal Hocko
2014-01-15 21:23 ` David Rientjes
2014-01-16 9:32 ` Michal Hocko
2014-01-21 5:58 ` David Rientjes
2014-01-21 6:04 ` Greg Kroah-Hartmann
2014-01-21 6:08 ` David Rientjes
2014-01-10 8:30 ` Michal Hocko
2014-01-10 21:38 ` David Rientjes
2014-01-10 22:34 ` Johannes Weiner
2014-01-12 22:14 ` David Rientjes
2013-11-18 15:54 ` [patch] mm, memcg: add memory.oom_control notification for system oom Johannes Weiner
2013-11-18 23:15 ` One Thousand Gnomes
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