linux-kernel - Re: [PATCH] arch: uapi: asm: mman.h: Support MADV

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Message-ID: <CAE2sS1hDXqLvF9yY5-3d4pmDPiQy8aQ1fYov3_+BKM8uQ3ZSwA@mail.gmail.com>
Date:	Mon, 1 Dec 2014 17:01:58 -0500
From:	"Carlos O'Donell" <carlos@...temhalted.org>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Max Filippov <jcmvbkbc@...il.com>,
	Chen Gang <gang.chen.5i5j@...il.com>,
	Minchan Kim <minchan@...nel.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"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>,
	"linux-alpha@...r.kernel.org" <linux-alpha@...r.kernel.org>,
	"linux-mips@...ux-mips.org" <linux-mips@...ux-mips.org>,
	"linux-parisc@...r.kernel.org" <linux-parisc@...r.kernel.org>,
	"linux-xtensa@...ux-xtensa.org" <linux-xtensa@...ux-xtensa.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH] arch: uapi: asm: mman.h: Support MADV_FREE for madvise()

On Mon, Dec 1, 2014 at 4:35 PM, Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> On Mon, Dec 1, 2014 at 9:52 PM, Max Filippov <jcmvbkbc@...il.com> wrote:
>> On Mon, Dec 1, 2014 at 11:43 PM, Chen Gang <gang.chen.5i5j@...il.com> wrote:
>>> At present, kernel supports madvise(MADV_FREE), so can benefit to all
>>> related architectures (can grep MADV_WILLNEED or MADV_REMOVE in "arch/"
>>> to know about all related architectures).
>>
>> A similar patch has been posted a while ago:
>>
>> http://www.spinics.net/lists/linux-mm/msg81538.html
>
> Would it be possible to use the same number everywhere?

Yes please. It's ridiculous that we still need patches like this.

I proposed unifying all this two years ago, but didn't follow up.

>From glibc's perspective it would be simpler if we started using the
same number everywhere.

http://www.spinics.net/lists/linux-api/msg02064.html

Cheers,
Carlos.
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