From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753320AbYEYWQP (ORCPT ); Sun, 25 May 2008 18:16:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751759AbYEYWQE (ORCPT ); Sun, 25 May 2008 18:16:04 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:52554 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751737AbYEYWQD (ORCPT ); Sun, 25 May 2008 18:16:03 -0400 Date: Sun, 25 May 2008 23:02:16 +0100 From: Alan Cox To: Andi Kleen Cc: Andi Kleen , Miquel van Smoorenburg , Glauber Costa , linux-kernel@vger.kernel.org, linux-mm@kvack.org, andi-suse@firstfloor.org Subject: Re: 2.6.26: x86/kernel/pci_dma.c: gfp |= __GFP_NORETRY ? Message-ID: <20080525230216.1fe1b216@core> In-Reply-To: <20080525212350.GB8405@one.firstfloor.org> References: <20080521113028.GA24632@xs4all.net> <48341A57.1030505@redhat.com> <20080522084736.GC31727@one.firstfloor.org> <1211484343.30678.15.camel@localhost.localdomain> <1211657898.25661.2.camel@localhost.localdomain> <20080525163539.GA8405@one.firstfloor.org> <20080525205532.3ed5e478@core> <20080525212350.GB8405@one.firstfloor.org> X-Mailer: Claws Mail 3.3.1 (GTK+ 2.12.5; x86_64-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > No it doesn't because the lower zone protection basically never puts > anything that is not GFP_DMA into the 16MB zone. > > Just check yourself on your machine using sysrq. > > That was one of the motivations behind the mask allocator design. Try a 16MB embedded PC Alan