From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 20 Sep 2001 03:38:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 20 Sep 2001 03:38:14 -0400 Received: from ns.caldera.de ([212.34.180.1]:9929 "EHLO ns.caldera.de") by vger.kernel.org with ESMTP id ; Thu, 20 Sep 2001 03:38:06 -0400 Date: Thu, 20 Sep 2001 09:38:10 +0200 From: Christoph Hellwig To: GOTO Masanori Cc: rfuller@nsisoftware.com, linux-kernel@vger.kernel.org Subject: Re: broken VM in 2.4.10-pre9 Message-ID: <20010920093810.A19534@caldera.de> Mail-Followup-To: Christoph Hellwig , GOTO Masanori , rfuller@nsisoftware.com, linux-kernel@vger.kernel.org In-Reply-To: <878A2048A35CD141AD5FC92C6B776E4907B7A5@xchgind02.nsisw.com> <200109192226.f8JMQ5112543@ns.caldera.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from gotom@debian.or.jp on Thu, Sep 20, 2001 at 12:16:56PM +0900 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 20, 2001 at 12:16:56PM +0900, GOTO Masanori wrote: > At Thu, 20 Sep 2001 00:26:05 +0200, > Christoph Hellwig wrote: > > > "One argument for reverse mappings is distributed shared memory or > > > distributed file systems and their interaction with memory mapped files. > > > For example, a distributed file system may need to invalidate a specific > > > page of a file that may be mapped multiple times on a node." > > > > Please take a look at zap_inode_mappings in -ac. > > zap_inode_mapping ? Yes. > > > Currently it only invalidates a whole mapping, but we can easily add > > offset and lenght (and will probably do). > > Adding offset/length support is good. > Did you mean that replacing zap_inode_mapping into more parts like > zap_inode_mapping_whole and zap_inode_mapping_range ? That depends. For 2.4 at least we (the OpenGFS Project) probably won't need it - and I didn't hear from other groups that need such functionality yet. Christoph -- Of course it doesn't work. We've performed a software upgrade.