From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757298AbXD0XQM (ORCPT ); Fri, 27 Apr 2007 19:16:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757880AbXD0XQL (ORCPT ); Fri, 27 Apr 2007 19:16:11 -0400 Received: from terminus.zytor.com ([192.83.249.54]:50938 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757298AbXD0XQJ (ORCPT ); Fri, 27 Apr 2007 19:16:09 -0400 Message-ID: <4632842F.20101@zytor.com> Date: Fri, 27 Apr 2007 16:15:59 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.0 (X11/20070419) MIME-Version: 1.0 To: Ulrich Drepper CC: Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: [PATCH] utimensat implementation References: <200704262249.l3QMn5C2021588@devserv.devel.redhat.com> <20070426162530.bc30a1bb.akpm@linux-foundation.org> <46313F99.6080402@zytor.com> <46314A08.9000209@redhat.com> <46314AAD.9010300@zytor.com> <46314C3B.3040908@redhat.com> In-Reply-To: <46314C3B.3040908@redhat.com> X-Enigmail-Version: 0.95.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ulrich Drepper wrote: > H. Peter Anvin wrote: >> Primarily to let a backup program restore the full state of the filesystem. > > Is this wanted? Or needed? I would think there are good reasons why > this hasn't been done so far. Intrusion detection is one reason I can > think of. Well, dump/restore -- the traditional Unix backup solution -- went "the back way" to restore the times in the filesystem. The main use of atime seems to be to figure out when something can be automatically deleted. Anyone else have other usage scenarios? -hpa