Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757168AbYBGOK2 (ORCPT ); Thu, 7 Feb 2008 09:10:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754174AbYBGOKU (ORCPT ); Thu, 7 Feb 2008 09:10:20 -0500 Received: from sovereign.computergmbh.de ([85.214.69.204]:58689 "EHLO sovereign.computergmbh.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753984AbYBGOKT (ORCPT ); Thu, 7 Feb 2008 09:10:19 -0500 Date: Thu, 7 Feb 2008 15:10:18 +0100 (CET) From: Jan Engelhardt To: Jan Kara cc: Michael Tokarev , Kernel Mailing List Subject: Re: remount-ro & umount & quota interaction In-Reply-To: <20080207140441.GF6140@duck.suse.cz> Message-ID: References: <47A9F495.8060400@msgid.tls.msk.ru> <20080207102815.GB26403@atrey.karlin.mff.cuni.cz> <47AAE250.8040702@msgid.tls.msk.ru> <20080207140441.GF6140@duck.suse.cz> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1103 Lines: 26 On Feb 7 2008 15:04, Jan Kara wrote: >On Thu 07-02-08 13:49:52, Michael Tokarev wrote: >> Jan Kara wrote: >> [deadlock after remount-ro followed with umount when >> quota is enabled] >> >> Hmm. While that will prevent the lockup, maybe it's better to >> perform an equivalent of quotaoff on mount-ro instead? [...] > > We couldn't leave quota on when filesystem is remounted ro because we >need to modify quotafile when quota is being turned off. We could turn off >quotas when remounting read-only. As we turn them off during umount, it >probably makes sence to turn them off on remount-ro as well. Objection. XFS handles quotas differently that does not involve modifying a file on the fs, so quotas could stay on (even if it does not make much sense) while the fs is ro. (Hm, storing quota as files reminds me of the ugly xattr hack in reiserfs3.) -- 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/