Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261409AbVBVTgI (ORCPT ); Tue, 22 Feb 2005 14:36:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261427AbVBVTgH (ORCPT ); Tue, 22 Feb 2005 14:36:07 -0500 Received: from e1.ny.us.ibm.com ([32.97.182.141]:57572 "EHLO e1.ny.us.ibm.com") by vger.kernel.org with ESMTP id S261409AbVBVTgC (ORCPT ); Tue, 22 Feb 2005 14:36:02 -0500 Subject: Re: [patch -mm series] ia64 specific /dev/mem handlers From: Dave Hansen To: Andrew Morton Cc: Matthew Wilcox , jes@wildopensource.com, linux-ia64@vger.kernel.org, Linux Kernel Mailing List In-Reply-To: <20050222112513.4162860d.akpm@osdl.org> References: <16923.193.128608.607599@jaguar.mkp.net> <20050222020309.4289504c.akpm@osdl.org> <20050222175225.GK28741@parcelfarce.linux.theplanet.co.uk> <20050222112513.4162860d.akpm@osdl.org> Content-Type: text/plain Date: Tue, 22 Feb 2005 11:35:38 -0800 Message-Id: <1109100938.25666.44.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.0.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 758 Lines: 19 I was talking with Nigel Cunningham about doing something a little different from the classic page flag bits when the number of users is restricted and performance isn't ultra-critical. Would something like this work for you, instead of using a real page->flags bit for PG_cached? http://marc.theaimsgroup.com/?l=linux-kernel&m=110878103926956&w=2 BTW, they're planning on using two of those dynamic flags for software suspend, and I'll probably use at least another two in the memory hotplug code. -- Dave - 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/