Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964883AbWCUW5s (ORCPT ); Tue, 21 Mar 2006 17:57:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965140AbWCUW5s (ORCPT ); Tue, 21 Mar 2006 17:57:48 -0500 Received: from omx2-ext.sgi.com ([192.48.171.19]:9667 "EHLO omx2.sgi.com") by vger.kernel.org with ESMTP id S964883AbWCUW5r (ORCPT ); Tue, 21 Mar 2006 17:57:47 -0500 Date: Tue, 21 Mar 2006 14:57:27 -0800 (PST) From: Christoph Lameter To: Adrian Bunk cc: Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: 2.6.16-rc6-mm2: Why is CONFIG_MIGRATION available for everyone? In-Reply-To: <20060321225430.GJ3890@stusta.de> Message-ID: References: <20060318044056.350a2931.akpm@osdl.org> <20060321225430.GJ3890@stusta.de> 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 Content-Length: 810 Lines: 20 On Tue, 21 Mar 2006, Adrian Bunk wrote: > 5. Make it possible to configure NUMA systems without page migration > and non-NUMA systems with page migration. > > > I don't see the point in making this option visible for the majority of > users on non-NUMA systems who will never need it. > > When is it required on non-NUMA systems? > Memory hotplug? That is one. It also may be useful for transferring pages between various zones. Could be used to free up space in ZONE_DMA etc. Right now none of these uses exist so we could disable it by default for now? - 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/