linux-kernel - Re: [patch -mm 6/9 v2] oom: deprecate oom

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Message-ID: <alpine.DEB.2.00.1002151433040.1324@chino.kir.corp.google.com>
Date:	Mon, 15 Feb 2010 14:35:21 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Nick Piggin <npiggin@...e.de>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Lubos Lunak <l.lunak@...e.cz>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [patch -mm 6/9 v2] oom: deprecate oom_adj tunable

On Mon, 15 Feb 2010, Alan Cox wrote:

> > /proc/pid/oom_adj is now deprecated so that that it may eventually be
> > removed.  The target date for removal is December 2011.
> 
> There are systems that rely on this feature. It's ABI, its sacred. We are
> committed to it and it has users. That doesn't really detract from the
> good/bad of the rest of the proposal, it's just one step we can't quite
> make.
> 

Andrew suggested that it be deprecated in this way, so that's what was 
done.  I don't have any strong opinions about leaving it around forever 
now that it's otherwise unused beyond simply converting itself into units 
for /proc/pid/oom_score_adj at a much higher granularity.
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