From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757420AbZEHOgn (ORCPT ); Fri, 8 May 2009 10:36:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752411AbZEHOgc (ORCPT ); Fri, 8 May 2009 10:36:32 -0400 Received: from mx2.redhat.com ([66.187.237.31]:40063 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751201AbZEHOgb (ORCPT ); Fri, 8 May 2009 10:36:31 -0400 Message-ID: <4A04430F.1090006@redhat.com> Date: Fri, 08 May 2009 10:34:55 -0400 From: Rik van Riel Organization: Red Hat, Inc User-Agent: Thunderbird 2.0.0.17 (X11/20080915) MIME-Version: 1.0 To: Christoph Lameter CC: Minchan Kim , Wu Fengguang , Johannes Weiner , Andrew Morton , Peter Zijlstra , "linux-kernel@vger.kernel.org" , "tytso@mit.edu" , "linux-mm@kvack.org" , Elladan , Nick Piggin , KOSAKI Motohiro Subject: Re: [PATCH -mm] vmscan: make mapped executable pages the first class citizen References: <20090430215034.4748e615@riellaptop.surriel.com> <20090430195439.e02edc26.akpm@linux-foundation.org> <49FB01C1.6050204@redhat.com> <20090501123541.7983a8ae.akpm@linux-foundation.org> <20090503031539.GC5702@localhost> <1241432635.7620.4732.camel@twins> <20090507121101.GB20934@localhost> <20090507151039.GA2413@cmpxchg.org> <20090508030209.GA8892@localhost> <20090508163042.ba4ef116.minchan.kim@barrios-desktop> <20090508080921.GA25411@localhost> <20090508183427.f313770f.minchan.kim@barrios-desktop> In-Reply-To: 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 Christoph Lameter wrote: > On Fri, 8 May 2009, Minchan Kim wrote: > >>>> Why did you said that "The page_referenced() path will only cover the ""_text_"" section" ? >>>> Could you elaborate please ? >>> I was under the wild assumption that only the _text_ section will be >>> PROT_EXEC mapped. No? >> Yes. I support your idea. > > Why do PROT_EXEC mapped segments deserve special treatment? What about the > other memory segments of the process? Essentials like stack, heap and > data segments of the libraries? Christopher, please look at what changed in the VM since 2.6.29 and you will understand how the stack, heap and data segments already get special treatment. Please stop pretending you're an idiot. -- All rights reversed. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with SMTP id 693386B004D for ; Fri, 8 May 2009 10:34:59 -0400 (EDT) Message-ID: <4A04430F.1090006@redhat.com> Date: Fri, 08 May 2009 10:34:55 -0400 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [PATCH -mm] vmscan: make mapped executable pages the first class citizen References: <20090430215034.4748e615@riellaptop.surriel.com> <20090430195439.e02edc26.akpm@linux-foundation.org> <49FB01C1.6050204@redhat.com> <20090501123541.7983a8ae.akpm@linux-foundation.org> <20090503031539.GC5702@localhost> <1241432635.7620.4732.camel@twins> <20090507121101.GB20934@localhost> <20090507151039.GA2413@cmpxchg.org> <20090508030209.GA8892@localhost> <20090508163042.ba4ef116.minchan.kim@barrios-desktop> <20090508080921.GA25411@localhost> <20090508183427.f313770f.minchan.kim@barrios-desktop> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Christoph Lameter Cc: Minchan Kim , Wu Fengguang , Johannes Weiner , Andrew Morton , Peter Zijlstra , "linux-kernel@vger.kernel.org" , "tytso@mit.edu" , "linux-mm@kvack.org" , Elladan , Nick Piggin , KOSAKI Motohiro List-ID: Christoph Lameter wrote: > On Fri, 8 May 2009, Minchan Kim wrote: > >>>> Why did you said that "The page_referenced() path will only cover the ""_text_"" section" ? >>>> Could you elaborate please ? >>> I was under the wild assumption that only the _text_ section will be >>> PROT_EXEC mapped. No? >> Yes. I support your idea. > > Why do PROT_EXEC mapped segments deserve special treatment? What about the > other memory segments of the process? Essentials like stack, heap and > data segments of the libraries? Christopher, please look at what changed in the VM since 2.6.29 and you will understand how the stack, heap and data segments already get special treatment. Please stop pretending you're an idiot. -- All rights reversed. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org