linux-kernel - Re: [PATCH 2/2][BUGFIX] Revert "oom: deprecate oom

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Message-ID: <alpine.DEB.2.00.1008250326150.16411@chino.kir.corp.google.com>
Date:	Wed, 25 Aug 2010 03:27:45 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
cc:	LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Minchan Kim <minchan.kim@...il.com>
Subject: Re: [PATCH 2/2][BUGFIX] Revert "oom: deprecate oom_adj tunable"

On Wed, 25 Aug 2010, KOSAKI Motohiro wrote:

> oom_adj is not only used for kernel knob, but also used for
> application interface.
> Then, adding new knob is no good reason to deprecate it.
> 
> Also, after former patch, oom_score_adj can't be used for setting
> OOM_DISABLE. We need "echo -17 > /proc/<pid>/oom_adj" thing.
> 
> This reverts commit 51b1bd2ace1595b72956224deda349efa880b693.

Since I nacked the parent patch of this, I implicitly nack this one as 
well since oom_score_adj shouldn't be going anywhere.  The way to disable 
oom killing for a task via the new interface, /proc/pid/oom_score_adj, is 
by OOM_SCORE_ADJ_MIN as specified in the documentation.
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