From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965341AbXBLTmW (ORCPT ); Mon, 12 Feb 2007 14:42:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965343AbXBLTmV (ORCPT ); Mon, 12 Feb 2007 14:42:21 -0500 Received: from mga06.intel.com ([134.134.136.21]:7359 "EHLO orsmga101.jf.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S965341AbXBLTmT (ORCPT ); Mon, 12 Feb 2007 14:42:19 -0500 X-ExtLoop1: 1 X-IronPort-AV: i="4.13,316,1167638400"; d="scan'208"; a="195879312:sNHT23248659" Date: Mon, 12 Feb 2007 11:42:11 -0800 From: Valerie Henson To: Dave Jones , Michael Kerrisk , lkml Subject: Re: Documenting MS_RELATIME Message-ID: <20070212194211.GA5108@nifty> References: <45CE0737.6010103@gmx.net> <20070211005400.GC6849@redhat.com> <20070212065503.GC20919@nifty> <20070212154010.GC7617@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070212154010.GC7617@redhat.com> User-Agent: Mutt/1.5.12-2006-07-14 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 12, 2007 at 10:40:10AM -0500, Dave Jones wrote: > > The one problem with noatime is that mutt's 'new mail arrived' breaks > as you mentioned in the relatime changelog, so I'm surprised that > they turned it on by default. With relatime fixing that however, > I'm also unaware of anything that breaks. I'd be curious to > do a Fedora test release with relatime, but I know the answer I'll > get when I recommend we add it to our generated fstabs.. > > "If it's good enough, why isn't it the kernel default" > > Hence my current line of questioning ;-) Okay, I have to admit I used the normal atime semantics, exactly once. Someone hacked my laptop about 4 years ago (back when I didn't have a firewall and a remotely exploitable samba server was on by default in some Red Hat install). I pulled the plug on the network (no wireless either) and figured out which files the attacker read, which gave me some peace of mind. :) Personally, I'd trade that for the performance/battery life/etc. of relatime. -VAL