From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751537Ab2GNEKJ (ORCPT ); Sat, 14 Jul 2012 00:10:09 -0400 Received: from mail-lb0-f174.google.com ([209.85.217.174]:49719 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750713Ab2GNEKH (ORCPT ); Sat, 14 Jul 2012 00:10:07 -0400 Message-ID: <1342238669.3209.4.camel@brekeke> Subject: Re: [PATCH 0/3] fs/sysv: stop using write_supers and s_dirt From: Artem Bityutskiy Reply-To: dedekind1@gmail.com To: Andrew Morton Cc: Al Viro , Linux Kernel Maling List , Linux FS Maling List , Alan Cox Date: Sat, 14 Jul 2012 07:04:29 +0300 In-Reply-To: <20120713144244.f3c9fb27.akpm@linux-foundation.org> References: <1341323008-29414-1-git-send-email-dedekind1@gmail.com> <1342103878.18274.98.camel@sauron.fi.intel.com> <20120713144244.f3c9fb27.akpm@linux-foundation.org> Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-YnAYaTqW8MuEUCgZbb6V" X-Mailer: Evolution 3.2.3 (3.2.3-3.fc16) Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-YnAYaTqW8MuEUCgZbb6V Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2012-07-13 at 14:42 -0700, Andrew Morton wrote: >=20 > The issue Alan raised around the superblock timestamp is still up in > the air. I guess he's a slow typist ;) >=20 > My take is "no, we don't need to do that any more" - surely all Linux > systems have a functional hardware clock. But the changelog should be > updated to describe and justify the decision. >=20 While I do trust such system existed and may be even still exist, I doubt that Linux sysv FS implementation is of any help for them because it updates the superblock time-stamp _only_ if there was write activity, otherwise it does not. So you cannot rely on our time-stamps at all anyway. My patches just make it update the time-stamp more rarely. --=20 Best Regards, Artem Bityutskiy --=-YnAYaTqW8MuEUCgZbb6V Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJQAO/NAAoJECmIfjd9wqK0i04QALvxeEhmK7eXV6PuKhHmSPdC yAFhuQiEzyN5P7TWHBJsZSMLqZzI+oqvhqBYB7I6a6CvSLnA3v+/WiKrYue5ULDN kZGXTLfQoB+5/U1p2jWlSOPBfMafk6cPqW3KLmQqQPtGiQ8mQvsPKLn67c88IiD6 +3aWV02jgP9u3VA4hGC5COJU5VIroZPZvHOzT9XdPQqpoNYJCD1nZg3RON6OvCfk EmN3Z4n716Un/5Zu3hVsWo+an2rL89qLZ3fm7tzpVeBBID11V+KRjc4gdONm5L7h gij0GreqMlR/k4q/lBMTVA0kYoMXO1W4riKG8Q5BCQ0r2pZCIIEaAMXcVBXXilyD O8ZtVzt/geCPoKdAItOw4BE5RImAgSCY6Q+RsS6EDmlH0h/s2mgFnnlsAMxjjLsx xJUZ5ESxOm5LH10HeNpmpcXoG+PomxoIozLvSFw9rMzygK/2vFzkrFzABEX+o1SB fvBkdXUNs5Qd8Z4irCs8rZJz+Teu3HtpKLRpO2aaCzV4ouL6LmW2Gez8Hp/KlrF/ 9ZOkCHyHLH8abYULaOJziaU8sY8Mqb4rfupKeG2KneQjAuJNBdXWei64dBxrl1gF y1VCSzzzeqDRdPk4P+CgSWXnQZ2J4TOWbmWI5EyXnUHWHWyruG6XIoBQwFcaMjPr J3HL2lw5PxJOWkb+tkVY =yxcZ -----END PGP SIGNATURE----- --=-YnAYaTqW8MuEUCgZbb6V--