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Date: Tue, 13 Dec 2011 02:05:18 +0400
From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Kees Cook <keescook@chromium.org>, LKML <linux-kernel@vger.kernel.org>,
        Tejun Heo <tj@kernel.org>, Andrew Vagin <avagin@openvz.org>,
        Serge Hallyn <serge.hallyn@canonical.com>,
        Vasiliy Kulikov <segoon@openwall.com>,
        KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
        Alexey Dobriyan <adobriyan@gmail.com>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        Pavel Emelyanov <xemul@parallels.com>,
        Michael Kerrisk <mtk.manpages@gmail.com>
Subject: Re: [patch 3/3] [PATCH] prctl: Add PR_SET_MM codes to set up
 mm_struct entires v3
Message-ID: <20111212220518.GU2199@moon>
References: <20111212200642.836001668@openvz.org>
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On Tue, Dec 13, 2011 at 02:01:32AM +0400, Cyrill Gorcunov wrote:
...
> > 
> > This may not be true of all compiler versions, but when I cache
> > current->mm in a local, the code size is reduced rather a lot:
> > 
> > akpm:/usr/src/25> size kernel/sys.o
> >    text    data     bss     dec     hex filename
> >   22685   14376    7616   44677    ae85 kernel/sys.o
> >   22489   14376    7616   44481    adc1 kernel/sys.o
> > 
> 
> Hmm, this is great and weird. Letme try...
> 

Same here (gcc version 4.6.2 20111027)

   text	   data	    bss	    dec	    hex	filename
  20829	  14376	   5736	  40941	   9fed	kernel/sys.o
  20682	  14376	   5736	  40794	   9f5a	kernel/sys.o

thanks Andrew!

	Cyrill