Re: [PATCH] remove duplicate asm/mman.h files
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- To: David Rientjes <rientjes@xxxxxxxxxx>
- Subject: Re: [PATCH] remove duplicate asm/mman.h files
- From: Arnd Bergmann <arnd@xxxxxxxx>
- Date: Mon, 21 Sep 2009 10:31:25 +0200
- Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, ebmunson@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-man@xxxxxxxxxxxxxxx, mtk.manpages@xxxxxxxxx, randy.dunlap@xxxxxxxxxx, rth@xxxxxxxxxxx, ink@xxxxxxxxxxxxxxxxxxxx, Tony Luck <tony.luck@xxxxxxxxx>, Fenghua Yu <fenghua.yu@xxxxxxxxx>, linux-ia64@xxxxxxxxxxxxxxx
- In-reply-to: <alpine.DEB.1.00.0909181236190.27556@xxxxxxxxxxxxxxxxxxxxxxxxx>
- List-id: <linux-ia64.vger.kernel.org>
- References: <cover.1251197514.git.ebmunson@xxxxxxxxxx> <200909181848.42192.arnd@xxxxxxxx> <alpine.DEB.1.00.0909181236190.27556@xxxxxxxxxxxxxxxxxxxxxxxxx>
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On Friday 18 September 2009, David Rientjes wrote:
> On Fri, 18 Sep 2009, Arnd Bergmann wrote:
>
> > -#define MCL_CURRENT 1 /* lock all current mappings */
> > -#define MCL_FUTURE 2 /* lock all future mappings */
> > +#define MAP_GROWSUP 0x0200 /* register stack-like segment */
> >
> > #ifdef __KERNEL__
> > #ifndef __ASSEMBLY__
>
> ia64 doesn't use MAP_GROWSUP, so it's probably not necessary to carry it
> along with your cleanup.
ia64 is the only architecture defining it, nobody uses it in the kernel.
If the ia64 maintainers want to remove it in a separate patch, that
would probably be a good idea.
I tried not to change the ABI in any way in my patch, and there is
a theoretical possibility that some user space program on ia64 currently
depends on that definition.
Arnd <><
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