From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263305AbVGAMIa (ORCPT ); Fri, 1 Jul 2005 08:08:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263313AbVGAMIa (ORCPT ); Fri, 1 Jul 2005 08:08:30 -0400 Received: from frankvm.xs4all.nl ([80.126.170.174]:59574 "EHLO janus.localdomain") by vger.kernel.org with ESMTP id S263305AbVGAMI1 (ORCPT ); Fri, 1 Jul 2005 08:08:27 -0400 Date: Fri, 1 Jul 2005 14:08:26 +0200 From: Frank van Maarseveen To: Miklos Szeredi Cc: akpm@osdl.org, aia21@cam.ac.uk, arjan@infradead.org, linux-kernel@vger.kernel.org, frankvm@frankvm.com Subject: Re: FUSE merging? Message-ID: <20050701120826.GC5218@janus> References: <1120126804.3181.34.camel@laptopd505.fenrus.org> <1120129996.5434.1.camel@imp.csi.cam.ac.uk> <20050630124622.7c041c0b.akpm@osdl.org> <20050630235059.0b7be3de.akpm@osdl.org> <20050701001439.63987939.akpm@osdl.org> <20050701010229.4214f04e.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i X-Subliminal-Message: Use Linux! Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 01, 2005 at 12:11:53PM +0200, Miklos Szeredi wrote: > > > Userspace can tell the kernel, how long a dentry should be valid. I > > > don't think the NFS protocol provides this. Same holds for the inode > > > attributes. > > > > Why is that needed? > > Because, I can well imagine a synthetic filesystem, where file > data/metadata change aribitrarily. In this case the timeout heuristic > in NFS is not useful. > > In fact with NFS it's often a PITA, that it doesn't want to refresh a > file's data/metatata, which I _know_ has changed on the server. This NFS issue is on my radar for years already. I have a patch which is practical but a bit disgusting. IMHO it's orthogonal to FUSE. -- Frank