From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264352AbUFKWBr (ORCPT ); Fri, 11 Jun 2004 18:01:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264358AbUFKWBq (ORCPT ); Fri, 11 Jun 2004 18:01:46 -0400 Received: from fw.osdl.org ([65.172.181.6]:51105 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S264352AbUFKWBk (ORCPT ); Fri, 11 Jun 2004 18:01:40 -0400 Date: Fri, 11 Jun 2004 15:04:19 -0700 From: Andrew Morton To: David Howells Cc: torvalds@osdl.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] Permit inode & dentry hash tables to be allocated > MAX_ORDER size Message-Id: <20040611150419.11281555.akpm@osdl.org> In-Reply-To: <1056.1086952350@redhat.com> References: <20040611034809.41dc9205.akpm@osdl.org> <567.1086950642@redhat.com> <1056.1086952350@redhat.com> X-Mailer: Sylpheed version 0.9.7 (GTK+ 1.2.10; i586-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org David Howells wrote: > > (2) Changing MAX_ORDER appears to have a number of effects beyond just > limiting the maximum size that can be allocated in one go. Several architectures implement CONFIG_FORCE_MAX_ZONEORDER and I haven't heard of larger MAX_ORDERs causing problems. Certainly, increasing MAX_ORDER is the simplest solution to the problems which you identify so we need to substantiate these "number of effects" much more than this please.