linux-kernel - [regression] Re: [RFC][PATCH] mm: Fix RLIMIT

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Date:	Wed, 29 May 2013 09:58:45 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Al Viro <viro@...IV.linux.org.uk>,
	Vince Weaver <vincent.weaver@...ne.edu>,
	linux-kernel@...r.kernel.org, Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	trinity@...r.kernel.org, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, roland@...nel.org,
	infinipath@...gic.com, linux-mm@...ck.org,
	linux-rdma@...r.kernel.org, Or Gerlitz <or.gerlitz@...il.com>,
	Hugh Dickins <hughd@...gle.com>
Subject: [regression] Re: [RFC][PATCH] mm: Fix RLIMIT_MEMLOCK


* Christoph Lameter <cl@...ux.com> wrote:

> On Mon, 27 May 2013, Peter Zijlstra wrote:
> 
> > Before your patch pinned was included in locked and thus RLIMIT_MEMLOCK
> > had a single resource counter. After your patch RLIMIT_MEMLOCK is
> > applied separately to both -- more or less.
> 
> Before the patch the count was doubled since a single page was counted 
> twice: Once because it was mlocked (marked with PG_mlock) and then again 
> because it was also pinned (the refcount was increased). Two different 
> things.

Christoph, why are you *STILL* arguing??

You caused a *regression* in a userspace ABI plain and simple, and a 
security relevant one. Furtermore you modified kernel/events/core.c yet 
you never even Cc:-ed the parties involved ...

All your excuses, obfuscation and attempts to redefine the universe to 
your liking won't change reality: it worked before, it does not now. Take 
responsibility for your action for christ's sake and move forward towards 
a resolution , okay?

When can we expect a fix from you for the breakage you caused? Or at least 
a word that acknowledges that you broke a user ABI carelessly?

Thanks,

	Ingo
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