From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chen Gang Subject: Re: [PATCH] arch: uapi: asm: mman.h: Support MADV_FREE for madvise() Date: Tue, 02 Dec 2014 10:07:33 +0800 Message-ID: <547D1EE5.5060409@gmail.com> References: <547CD304.20407@gmail.com> <1417485331.2585.26.camel@HansenPartnership.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=LXniFMBJHGwlCYcX5UUmKYA4EpW3dUUfIedNZZdlL28=; b=GL7aScEUu589PGy0jwkFsyRmRyCbBT2hICyycQvzryjP4DNSiUan4YoHecmDUd/dPG CLNDlbTKRJQtUB4FOqKUGdbO/JmFoCPILfZw9o0O9iouEP+OPLu4T0ed7d6ALOjtW4uL 3M7WvJeN8o00Hhj07bb6t0GOqfN4vkKq7mysWmnt20g+r+18vnneE9NsAJsUEOmyu6zK peib+Luk2sL5bDyucaFSXISQU+A9YJJsuc7rdFX+6k/J2b1UchaCmhwq3ehjejRPh+i5 qEDO9RGykRwRsMQakrY+xD0hVi7Mt76PAT5+hi4jYaXQ7AokZ5m8yn9zv01u1/+7j7/t XVvg== In-Reply-To: <1417485331.2585.26.camel@HansenPartnership.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: James Bottomley , Carlos O'Donell Cc: Geert Uytterhoeven , Max Filippov , Minchan Kim , "akpm@linux-foundation.org" , "rth@twiddle.net" , "ink@jurassic.park.msu.ru" , "mattst88@gmail.com" , Ralf Baechle , "jejb@parisc-linux.org" , "deller@gmx.de" , "chris@zankel.net" , "linux-alpha@vger.kernel.org" , "linux-mips@linux-mips.org" , "linux-parisc@vger.kernel.org" , "linux-xtensa@linux-xtensa.org" , "linux-kernel@vger.kernel.org" , Arnd Bergmann On 12/2/14 09:55, James Bottomley wrote: > On Mon, 2014-12-01 at 17:01 -0500, Carlos O'Donell wrote: >> On Mon, Dec 1, 2014 at 4:35 PM, Geert Uytterhoeven wrote: >>> On Mon, Dec 1, 2014 at 9:52 PM, Max Filippov wrote: >>>> On Mon, Dec 1, 2014 at 11:43 PM, Chen Gang 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 > > Please co-ordinate with Andrew then because he's intent on merging this > patch: > > http://marc.info/?l=linux-mm-commits&m=141747572930808 > For me, we can let MADV_FREE to 8 based on the Andrew's mm tree. Since it is about uapi, we need try our best to let it perfect. Thanks. -- Chen Gang Open, share, and attitude like air, water, and life which God blessed