linux-kernel - Re: [PATCH] Revert oom rewrite series

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Message-ID: <20101116140341.42561c84@schatten.dmk.lab>
Date:	Tue, 16 Nov 2010 14:03:41 +0100
From:	Florian Mickler <florian@...kler.org>
To:	linux-kernel@...r.kernel.org
Cc:	Valdis.Kletnieks@...edu, Jesper Juhl <jj@...osbits.net>,
	David Rientjes <rientjes@...gle.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Ying Han <yinghan@...gle.com>, Bodo Eggert <7eggert@....de>,
	Mandeep Singh Baines <msb@...gle.com>,
	"Figo.zhang" <figo1802@...il.com>
Subject: Re: [PATCH] Revert oom rewrite series

On Tue, 16 Nov 2010 11:03:10 +0000
Alan Cox <alan@...rguk.ukuu.org.uk> wrote:

> > 5.6p1 is the latest-n-greatest released version on www.openssh.org, so somebody
> > probably needs to rattle their chain...
> 
> But current openssh needs to support old kernels.
> 
> This is why this kind of obsoleting doesn't work well. It's not "update
> your app" so much as "drop support for older stuff or start doing
> complicated crap dependant on version"
> 
> and it's why for tiny amounts of code it is the *wrong* thing to force
> obsolete stuff especially when it still doesn't seem to have been
> properly marked for deprecation in the first place.
> 

How does one mark it apropriately?
The commit 51b1bd2 (oom: deprecate oom_adj tunable, see below) 
added it to feature-removal-schedule.txt, a patch for
Documentation/ABI has also been provided in the meantime, if i'm not
mistaken. 

And there is already a patch for openssh:
https://bugzilla.mindrot.org/show_bug.cgi?id=1838

Regards,
Flo

commit 51b1bd2ace1595b72956224deda349efa880b693
Author: David Rientjes <rientjes@...gle.com>
Date:   Mon Aug 9 17:19:47 2010 -0700

    oom: deprecate oom_adj tunable
    
    /proc/pid/oom_adj is now deprecated so that that it may eventually be
    removed.  The target date for removal is August 2012.
    
    A warning will be printed to the kernel log if a task attempts to use this
    interface.  Future warning will be suppressed until the kernel is rebooted
    to prevent spamming the kernel log.
    
    Signed-off-by: David Rientjes <rientjes@...gle.com>
    Cc: Nick Piggin <npiggin@...e.de>
    Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
    Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
    Cc: Oleg Nesterov <oleg@...hat.com>
    Cc: Balbir Singh <balbir@...ibm.com>
    Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
    Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>


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