From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266317AbUBDI24 (ORCPT ); Wed, 4 Feb 2004 03:28:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266325AbUBDI24 (ORCPT ); Wed, 4 Feb 2004 03:28:56 -0500 Received: from fw.osdl.org ([65.172.181.6]:55516 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S266317AbUBDI2z (ORCPT ); Wed, 4 Feb 2004 03:28:55 -0500 Date: Wed, 4 Feb 2004 00:30:27 -0800 From: Andrew Morton To: "Martin J. Bligh" Cc: haveblue@us.ibm.com, rangdi@yahoo.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: Active Memory Defragmentation: Our implementation & problems Message-Id: <20040204003027.375a539e.akpm@osdl.org> In-Reply-To: <1180000.1075879076@[10.10.2.4]> References: <20040204050915.59866.qmail@web9704.mail.yahoo.com> <1075874074.14153.159.camel@nighthawk> <35380000.1075874735@[10.10.2.4]> <1075875756.14153.251.camel@nighthawk> <38540000.1075876171@[10.10.2.4]> <1075876826.14166.314.camel@nighthawk> <1180000.1075879076@[10.10.2.4]> X-Mailer: Sylpheed version 0.9.4 (GTK+ 1.2.10; i686-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 "Martin J. Bligh" wrote: > > As long as we make sure the process doesn't run during the move, I don't > see why it'd be a problem. But I am less than convinced that rmap will > lead us back from the PTE page to the mm, at least w/o modification. ptep_to_mm() at your service.