From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753787Ab2CXOqw (ORCPT ); Sat, 24 Mar 2012 10:46:52 -0400 Received: from mail-bk0-f46.google.com ([209.85.214.46]:39874 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751686Ab2CXOqv (ORCPT ); Sat, 24 Mar 2012 10:46:51 -0400 Message-ID: <4F6DDE56.3090401@openvz.org> Date: Sat, 24 Mar 2012 18:46:46 +0400 From: Konstantin Khlebnikov User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.2) Gecko/20120217 Firefox/10.0.2 Iceape/2.7.2 MIME-Version: 1.0 To: Benjamin Herrenschmidt CC: Minchan Kim , Andrew Morton , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Linus Torvalds , Hugh Dickins , KOSAKI Motohiro , "linux@arm.linux.org.uk" Subject: Re: [PATCH 00/16] mm: prepare for converting vm->vm_flags to 64-bit References: <20120321065140.13852.52315.stgit@zurg> <20120321100602.GA5522@barrios> <4F69D496.2040509@openvz.org> <20120322053958.GA5278@barrios> <1332397358.2982.82.camel@pasglop> In-Reply-To: <1332397358.2982.82.camel@pasglop> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Benjamin Herrenschmidt wrote: > On Thu, 2012-03-22 at 14:39 +0900, Minchan Kim wrote: >> I think we can also unify VM_MAPPED_COPY(nommu) and VM_SAO(powerpc) >> with one VM_ARCH_1 >> Okay. After this series is merged, let's try to remove flags we can >> do. Then, other guys >> might suggest another ideas. > > Agreed. I would like more VM_ARCH while at it :-) Currently I see here four architecture-specific flags =) VM_ARCH_1 VM_ARCH_2 VM_ARCH_3 VM_ARCH_4 x86 VM_NOHUGEPAGE VM_HUGEPAGE - VM_PFN_AT_MMAP powerpc - - VM_SAO - parisc VM_GROWSUP - - - ia64 VM_GROWSUP - - - nommu - VM_MAPPED_COPY - - Obviously we can combine VM_PFN_AT_MMAP, VM_SAO, VM_GROWSUP and VM_MAPPED_COPY into one.