From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422861AbXDXRpE (ORCPT ); Tue, 24 Apr 2007 13:45:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1422863AbXDXRpD (ORCPT ); Tue, 24 Apr 2007 13:45:03 -0400 Received: from netops-testserver-4-out.sgi.com ([192.48.171.29]:37289 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1422881AbXDXRpA (ORCPT ); Tue, 24 Apr 2007 13:45:00 -0400 Date: Tue, 24 Apr 2007 10:45:00 -0700 (PDT) From: Christoph Lameter X-X-Sender: clameter@schroedinger.engr.sgi.com To: Hugh Dickins cc: Andrew Morton , Nick Piggin , linux-kernel@vger.kernel.org, pj@sgi.com Subject: Re: Pagecache: find_or_create_page does not call a proper page allocator function In-Reply-To: Message-ID: References: <20070423142919.5809e03f.akpm@linux-foundation.org> <20070423154224.15ebf8f7.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 24 Apr 2007, Hugh Dickins wrote: > I've not yet looked at the patch under discussion, but this remark > prompts me... a couple of days ago I got very worried by the various > hard-wired GFP_HIGHUSER allocations in mm/migrate.c and mm/mempolicy.c, > and wondered how those would work out if someone has a blockdev mmap'ed. I hope you are not confused by the fact that memory policies are only ever applied to one zone on a node. This is either HIGHMEM or NORMAL. There is no memory policy support for other than the highest zone.