Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263584AbUCYTnO (ORCPT ); Thu, 25 Mar 2004 14:43:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263580AbUCYTnO (ORCPT ); Thu, 25 Mar 2004 14:43:14 -0500 Received: from mail.shareable.org ([81.29.64.88]:29073 "EHLO mail.shareable.org") by vger.kernel.org with ESMTP id S263584AbUCYTnI (ORCPT ); Thu, 25 Mar 2004 14:43:08 -0500 Date: Thu, 25 Mar 2004 19:43:03 +0000 From: Jamie Lokier To: "Eric W. Biederman" Cc: =?iso-8859-1?Q?J=F6rn?= Engel , Davide Libenzi , "Patrick J. LoPresti" , Linux Kernel Mailing List Subject: Re: [PATCH] cowlinks v2 Message-ID: <20040325194303.GE11236@mail.shareable.org> References: <20040321125730.GB21844@wohnheim.fh-wedel.de> <20040321181430.GB29440@wohnheim.fh-wedel.de> <20040325174942.GC11236@mail.shareable.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 920 Lines: 20 Eric W. Biederman wrote: > One of the rougher patches, in that we don't have persistent inode > numbers. Basically the two files never have the same inode number. > To the user they are always presented as two separate files. That is not useful for me or the other people who want to use this to duplicate large source trees and run "diff" between trees. "diff" depends on being able to check if files in the two trees are identical -- by checking whether the inode number and device (and maybe other stat data) are identical. This allows "diff -ur" between two cloned trees the size of linux to be quite fast. Without that optimisation, it's very slow indeed. -- Jamie - 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/