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Date: Thu, 21 Feb 2013 14:18:41 -0800
From: Andrew Morton <akpm@linux-foundation.org>
To: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Amnon Shiloh <u3557@miso.sublimeip.com>,
        Steven Rostedt <rostedt@goodmis.org>, u3557@dialix.com.au,
        Oleg Nesterov <oleg@redhat.com>, Pedro Alves <palves@redhat.com>,
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        Jan Kratochvil <jan.kratochvil@redhat.com>,
        Pavel Emelyanov <xemul@parallels.com>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Ingo Molnar <mingo@redhat.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>, linux-kernel@vger.kernel.org
Subject: Re: prctl(PR_SET_MM)
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On Thu, 21 Feb 2013 12:00:28 +0400
Cyrill Gorcunov <gorcunov@openvz.org> wrote:

> From: Amnon Shiloh <u3557@miso.sublimeip.com>
> Subject: prctl: Make PR_SET_MM being depend on own CONFIG_MM_FIELDS_SETTING
> 
> ...
> 
> Signed-off-by: Amnon Shiloh <u3557@miso.sublimeip.com>

The "..." makes me sad.

If/when this patch gets sent for real, please explain the reasons? 
AFAICT it permits the enabling of prctl(PR_SET_MM) in
CONFIG_CHECKPOINT_RESTORE=n kernels.  If that was indeed the intent,
why?