From: Tejun Heo <tj@kernel.org>
To: David Rientjes <rientjes@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@suse.cz>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Christoph Lameter <cl@linux-foundation.org>,
Pekka Enberg <penberg@kernel.org>, Mel Gorman <mgorman@suse.de>,
Oleg Nesterov <oleg@redhat.com>, Rik van Riel <riel@redhat.com>,
Jianguo Wu <wujianguo@huawei.com>,
Tim Hockin <thockin@google.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
cgroups@vger.kernel.org, linux-doc@vger.kernel.org
Subject: Re: [patch 04/11] mm, memcg: add tunable for oom reserves
Date: Thu, 6 Mar 2014 16:04:27 -0500 [thread overview]
Message-ID: <20140306210427.GH14033@htj.dyndns.org> (raw)
In-Reply-To: <alpine.DEB.2.02.1403041955050.8067@chino.kir.corp.google.com>
On Tue, Mar 04, 2014 at 07:59:19PM -0800, David Rientjes wrote:
> Userspace needs a way to define the amount of memory reserves that
> processes handling oom conditions may utilize. This patch adds a per-
> memcg oom reserve field and file, memory.oom_reserve_in_bytes, to
> manipulate its value.
>
> If currently utilized memory reserves are attempted to be reduced by
> writing a smaller value to memory.oom_reserve_in_bytes, it will fail with
> -EBUSY until some memory is uncharged.
>
> Signed-off-by: David Rientjes <rientjes@google.com>
We're completely unsure this is the way we wanna be headed and this is
a huge commitment. For now at least,
Nacked-by: Tejun Heo <tj@kernel.org>
--
tejun
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next prev parent reply other threads:[~2014-03-06 21:04 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-05 3:58 [patch 00/11] userspace out of memory handling David Rientjes
2014-03-05 3:58 ` [patch 01/11] fork: collapse copy_flags into copy_process David Rientjes
2014-03-05 3:58 ` [patch 02/11] mm, mempolicy: rename slab_node for clarity David Rientjes
2014-03-05 3:59 ` [patch 03/11] mm, mempolicy: remove per-process flag David Rientjes
2014-03-07 17:20 ` Andi Kleen
2014-03-07 20:48 ` Andrew Morton
2014-03-05 3:59 ` [patch 04/11] mm, memcg: add tunable for oom reserves David Rientjes
2014-03-05 21:17 ` Andrew Morton
2014-03-06 2:53 ` David Rientjes
2014-03-06 21:04 ` Tejun Heo [this message]
2014-03-05 3:59 ` [patch 05/11] res_counter: remove interface for locked charging and uncharging David Rientjes
2014-03-05 3:59 ` [patch 06/11] res_counter: add interface for maximum nofail charge David Rientjes
2014-03-05 3:59 ` [patch 07/11] mm, memcg: allow processes handling oom notifications to access reserves David Rientjes
2014-03-06 21:12 ` Tejun Heo
2014-03-05 3:59 ` [patch 08/11] mm, memcg: add memcg oom reserve documentation David Rientjes
2014-03-05 3:59 ` [patch 09/11] mm, page_alloc: allow system oom handlers to use memory reserves David Rientjes
2014-03-06 21:13 ` Tejun Heo
2014-03-05 3:59 ` [patch 10/11] mm, memcg: add memory.oom_control notification for system oom David Rientjes
2014-03-06 21:15 ` Tejun Heo
2014-03-05 3:59 ` [patch 11/11] mm, memcg: allow system oom killer to be disabled David Rientjes
2014-03-06 21:15 ` Tejun Heo
2014-03-05 21:17 ` [patch 00/11] userspace out of memory handling Andrew Morton
2014-03-06 2:52 ` David Rientjes
2014-03-11 12:03 ` Jianguo Wu
2014-03-06 20:49 ` Tejun Heo
2014-03-06 20:55 ` David Rientjes
2014-03-06 20:59 ` Tejun Heo
2014-03-06 21:08 ` David Rientjes
2014-03-06 21:11 ` Tejun Heo
2014-03-06 21:23 ` David Rientjes
2014-03-06 21:29 ` Tejun Heo
2014-03-06 21:33 ` Tejun Heo
2014-03-07 12:23 ` Michal Hocko
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