From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1751705Ab1LHHau (ORCPT <rfc822;w@1wt.eu>);
	Thu, 8 Dec 2011 02:30:50 -0500
Received: from mail-bw0-f46.google.com ([209.85.214.46]:41141 "EHLO
	mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1751612Ab1LHHas (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Thu, 8 Dec 2011 02:30:48 -0500
Date: Thu, 8 Dec 2011 11:30:43 +0400
From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Kees Cook <keescook@chromium.org>, linux-kernel@vger.kernel.org,
        Tejun Heo <tj@kernel.org>, Andrew Vagin <avagin@openvz.org>,
        Serge Hallyn <serge.hallyn@canonical.com>,
        Pavel Emelyanov <xemul@parallels.com>,
        Vasiliy Kulikov <segoon@openwall.com>,
        KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
        Michael Kerrisk <mtk.manpages@gmail.com>
Subject: Re: [rfc 3/3] prctl: Add PR_SET_MM codes to tune up mm_struct entires
Message-ID: <20111208073043.GX21678@moon>
References: <20111129203714.GH1775@moon>
 <CAGXu5jKDLExXWi+_Hjc+8s7FeuDgQdZcPipMH80LQs+tRyJm2A@mail.gmail.com>
 <20111130173739.GI14515@moon>
 <CAGXu5jL=46_MyxrrB8G4FntnLJBtt+DbvVX0kEXh9n8Ss+Yfsw@mail.gmail.com>
 <20111130182310.GL14515@moon>
 <20111130210622.GM14515@moon>
 <20111207122718.GF21678@moon>
 <20111207144355.c889e22d.akpm@linux-foundation.org>
 <20111208070724.GW21678@moon>
 <20111207231512.519385bb.akpm@linux-foundation.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20111207231512.519385bb.akpm@linux-foundation.org>
User-Agent: Mutt/1.5.21 (2010-09-15)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Wed, Dec 07, 2011 at 11:15:12PM -0800, Andrew Morton wrote:
> On Thu, 8 Dec 2011 11:07:24 +0400 Cyrill Gorcunov <gorcunov@gmail.com> wrote:
> 
> > > 
> > > The prctl(2) manpage will need to be updated.  Please Cc Michael on all
> > > such changes.
> > >
> > 
> > you mean -- Michael Kerrisk, mtk AT man7.org, right?
> 
> That isn't what ./MAINTAINERS says?
> 

OK, I've just found him in MAINTAINERS.

> > > 
> > > This is starting to add a non-trivial amount of code.  Perhaps we need
> > > to introduce a Kconfig variable to control such things as this, to
> > > prevent bloating up kernels which aren't require to support c/r?
> > > 
> > 
> > Dunno, Andrew. Actually I agreed that these snippets are mostly
> > needed for c/r only, but the initial idea over all changes was
> > to add levers into kernel which might be helpful not only
> > for c/r but for someone else as well.
> 
> In each instance, a case would need to be made for that.  Plus if
> people later come along who want access to these things for other
> purposes, they can send a patch!
> 
> There will always be people who would *prefer* that this material not
> be present in their vmlinux.  For those people, this patch is a
> regression!
> 

OK, I'll add some Kconfing variable for that. Lets see how it goes.

	Cyrill