linux-kernel - Re: [PATCH 3/8] arch: uapi: asm: mman.h: Let MADV_FREE have same value for all architectures

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Message-ID: <20151103043115.GK17906@bbox>
Date:	Tue, 3 Nov 2015 13:31:15 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	David Miller <davem@...emloft.net>
CC:	hughd@...gle.com, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	mtk.manpages@...il.com, linux-api@...r.kernel.org,
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Subject: Re: [PATCH 3/8] arch: uapi: asm: mman.h: Let MADV_FREE have same
 value for all architectures

On Mon, Nov 02, 2015 at 10:36:52PM -0500, David Miller wrote:
> From: Minchan Kim <minchan@...nel.org>
> Date: Tue, 3 Nov 2015 11:36:51 +0900
> 
> > For the convenience for Dave, I found this.
> > 
> > commit ec98c6b9b47df6df1c1fa6cf3d427414f8c2cf16
> > Author: David S. Miller <davem@...emloft.net>
> > Date:   Sun Apr 20 02:14:23 2008 -0700
> > 
> >     [SPARC]: Remove SunOS and Solaris binary support.
> >     
> >     As per Documentation/feature-removal-schedule.txt
> >     
> >     Signed-off-by: David S. Miller <davem@...emloft.net>
> > 
> > Hello Dave,
> > Could you confirm it?
> 
> I don't understand what you want me to confirm.

Sorry for lacking of the information.

Is it okay to use number 8 for upcoming madvise(addr, len, MADV_FREE)
feature in sparc arch?

The reason to ask is that Darrick pointed out earlier that
dietlibc has a Solaris #define MADV_FREE 0x5 in its mman.h
and Hugh pointed out that was in the kernel's sparc mman.h up
until 2.6.25 but disappeared now so I guess it's okay to use the
number 8 for MADV_FREE in sparc but want to confirm from you.

Thanks.
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