From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikita Danilov Subject: Re: silent semantic changes with reiser4 Date: Thu, 26 Aug 2004 19:41:52 +0400 Sender: linux-fsdevel-owner@vger.kernel.org Message-ID: <16686.1216.77602.380618@thebsh.namesys.com> References: <20040825204240.GI21964@parcelfarce.linux.theplanet.co.uk> <20040825212518.GK21964@parcelfarce.linux.theplanet.co.uk> <20040826001152.GB23423@mail.shareable.org> <20040826003055.GO21964@parcelfarce.linux.theplanet.co.uk> <20040826010049.GA24731@mail.shareable.org> <412DA40B.5040806@namesys.com> <20040826140500.GA29965@fs.tum.de> <1093530313.11694.56.camel@leto.cs.pocnet.net> <20040826150434.GF5733@mail.shareable.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: Christophe Saout , Adrian Bunk , Hans Reiser , viro@parcelfarce.linux.theplanet.co.uk, Linus Torvalds , Christoph Hellwig , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Alexander Lyamin aka FLX , ReiserFS List Return-path: Received: from thebsh.namesys.com ([212.16.7.65]:47048 "HELO thebsh.namesys.com") by vger.kernel.org with SMTP id S269060AbUHZPlx (ORCPT ); Thu, 26 Aug 2004 11:41:53 -0400 To: Jamie Lokier In-Reply-To: <20040826150434.GF5733@mail.shareable.org> List-Id: linux-fsdevel.vger.kernel.org Jamie Lokier writes: > Christophe Saout wrote: > > What reiser4 can do, but the VFS can't is to insert or remove data in > > the middle of a file. Adding this above the page cache would probably be > > almost impossible (truncate seems already complicated enough). > > That would be one of those "special features" that a > VFS-plus-userspace implementation of archive views could take > advantage of on reiser4, while using a slower method (sometimes much > slower) on all other filesystems. > > By the way, can reiser4 share parts of files between different files? It can, but fsck is supposed to cope with this. :) > > -- Jamie Nikita.