linux-kernel - Re: [patch 04/11] mm, memcg: add tunable for oom reserves

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20140306210427.GH14033@htj.dyndns.org>
Date:	Thu, 6 Mar 2014 16:04:27 -0500
From:	Tejun Heo <tj@...nel.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Pekka Enberg <penberg@...nel.org>,
	Mel Gorman <mgorman@...e.de>, Oleg Nesterov <oleg@...hat.com>,
	Rik van Riel <riel@...hat.com>,
	Jianguo Wu <wujianguo@...wei.com>,
	Tim Hockin <thockin@...gle.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, cgroups@...r.kernel.org,
	linux-doc@...r.kernel.org
Subject: Re: [patch 04/11] mm, memcg: add tunable for oom reserves

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@...gle.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@...nel.org>

-- 
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/