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: <20151103023651.GI17906@bbox>
Date:	Tue, 3 Nov 2015 11:36:51 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Hugh Dickins <hughd@...gle.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Michael Kerrisk <mtk.manpages@...il.com>,
	linux-api@...r.kernel.org, Johannes Weiner <hannes@...xchg.org>,
	zhangyanfei@...fujitsu.com, Rik van Riel <riel@...hat.com>,
	Mel Gorman <mgorman@...e.de>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	David Miller <davem@...emloft.net>,
	"Darrick J. Wong" <darrick.wong@...cle.com>,
	Roland Dreier <roland@...nel.org>, Jason Evans <je@...com>,
	Daniel Micay <danielmicay@...il.com>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	Michal Hocko <mhocko@...e.cz>, yalin.wang2010@...il.com,
	Shaohua Li <shli@...nel.org>,
	Chen Gang <gang.chen.5i5j@...il.com>,
	"rth@...ddle.net" <rth@...ddle.net>,
	"ink@...assic.park.msu.ru" <ink@...assic.park.msu.ru>,
	"mattst88@...il.com" <mattst88@...il.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	"jejb@...isc-linux.org" <jejb@...isc-linux.org>,
	"deller@....de" <deller@....de>,
	"chris@...kel.net" <chris@...kel.net>,
	"jcmvbkbc@...il.com" <jcmvbkbc@...il.com>,
	Arnd Bergmann <arnd@...db.de>, sparclinux@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH 3/8] arch: uapi: asm: mman.h: Let MADV_FREE have same
 value for all architectures

On Tue, Nov 03, 2015 at 11:32:51AM +0900, Minchan Kim wrote:
> On Sun, Nov 01, 2015 at 04:08:27PM -0800, Hugh Dickins wrote:
> > On Fri, 30 Oct 2015, Minchan Kim wrote:
> > > From: Chen Gang <gang.chen.5i5j@...il.com>
> > > 
> > > For uapi, need try to let all macros have same value, and MADV_FREE is
> > > added into main branch recently, so need redefine MADV_FREE for it.
> > > 
> > > At present, '8' can be shared with all architectures, so redefine it to
> > > '8'.
> > > 
> > > Cc: rth@...ddle.net <rth@...ddle.net>,
> > > Cc: ink@...assic.park.msu.ru <ink@...assic.park.msu.ru>
> > > Cc: mattst88@...il.com <mattst88@...il.com>
> > > Cc: Ralf Baechle <ralf@...ux-mips.org>
> > > Cc: jejb@...isc-linux.org <jejb@...isc-linux.org>
> > > Cc: deller@....de <deller@....de>
> > > Cc: chris@...kel.net <chris@...kel.net>
> > > Cc: jcmvbkbc@...il.com <jcmvbkbc@...il.com>
> > > Cc: Arnd Bergmann <arnd@...db.de>
> > > Cc: linux-arch@...r.kernel.org
> > > Cc: linux-api@...r.kernel.org
> > > Acked-by: Minchan Kim <minchan@...nel.org>
> > > Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>
> > 
> > Let me add
> > Acked-by: Hugh Dickins <hughd@...gle.com>
> > to this one too.
> > 
> > But I have extended your mail's Cc list: Darrick pointed out earlier
> > that dietlibc has a Solaris #define MADV_FREE 0x5 in its mman.h,
> > and that was in the kernel's sparc mman.h up until 2.6.25.  I doubt
> > that presents any obstacle nowadays, but Dave Miller should be Cc'ed.

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?

Thanks.

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