Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759850AbXIQWDW (ORCPT ); Mon, 17 Sep 2007 18:03:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758948AbXIQWDL (ORCPT ); Mon, 17 Sep 2007 18:03:11 -0400 Received: from netops-testserver-4-out.sgi.com ([192.48.171.29]:35290 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1758860AbXIQWDJ (ORCPT ); Mon, 17 Sep 2007 18:03:09 -0400 Date: Mon, 17 Sep 2007 15:03:07 -0700 (PDT) From: Christoph Lameter X-X-Sender: clameter@schroedinger.engr.sgi.com To: =?utf-8?B?SsO2cm4=?= Engel cc: Andrew Morton , Nick Piggin , andrea@suse.de, torvalds@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Christoph Hellwig , Mel Gorman , William Lee Irwin III , David Chinner , Jens Axboe , Badari Pulavarty , Maxim Levitsky , Fengguang Wu , swin wang , totty.lu@gmail.com, hugh@veritas.com Subject: Re: [00/41] Large Blocksize Support V7 (adds memmap support) In-Reply-To: <20070916175352.GB2393@lazybastard.org> Message-ID: References: <20070911060349.993975297@sgi.com> <200709110452.20363.nickpiggin@yahoo.com.au> <20070911121225.GE13132@lazybastard.org> <20070915014449.4f9cdb51.akpm@linux-foundation.org> <20070916175352.GB2393@lazybastard.org> MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="-1700579579-134139651-1190066587=:29993" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1250 Lines: 29 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. ---1700579579-134139651-1190066587=:29993 Content-Type: TEXT/PLAIN; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE On Sun, 16 Sep 2007, J=F6rn Engel wrote: > I bet! My (false) assumption was the same as Goswin's. If non-movable > pages are clearly seperated from movable ones and will evict movable > ones before polluting further mixed superpages, Nick's scenario would be > nearly infinitely impossible. >=20 > Assumption doesn't reflect current code. Enforcing this assumption > would cost extra overhead. The amount of effort to make Christoph's > approach work reliably seems substantial and I have no idea whether it > would be worth it. My approach is based on Mel's code and is already working the way you=20 describe. Page cache allocs are marked __GFP_MOVABLE by Mel's work. ---1700579579-134139651-1190066587=:29993-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/