Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755905AbZIVP5i (ORCPT ); Tue, 22 Sep 2009 11:57:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755334AbZIVP5h (ORCPT ); Tue, 22 Sep 2009 11:57:37 -0400 Received: from mx1.redhat.com ([209.132.183.28]:23969 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755359AbZIVP5g (ORCPT ); Tue, 22 Sep 2009 11:57:36 -0400 Message-ID: <4AB8F3EC.6050607@redhat.com> Date: Tue, 22 Sep 2009 10:57:32 -0500 From: Eric Sandeen User-Agent: Thunderbird 2.0.0.21 (X11/20090320) MIME-Version: 1.0 To: Al Viro CC: Fernando Luis V?zquez Cao , Christoph Hellwig , t-sato@yk.jp.nec.com, m-hamaguchi@ys.jp.nec.com, Andrew Morton , Linux Kernel Mailing List Subject: Re: [PATCH 3/4] Do not allow umounting of frozen filesystems References: <4A94C151.8020900@oss.ntt.co.jp> <20090826173839.GA20175@lst.de> <4A965BD1.205@oss.ntt.co.jp> <4A9692CF.80508@oss.ntt.co.jp> <20090922110737.GL5858@ZenIV.linux.org.uk> In-Reply-To: <20090922110737.GL5858@ZenIV.linux.org.uk> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 607 Lines: 18 Al Viro wrote: ... > IOW, I'd rather add two new ioctls (check if frozen/thaw), both by > bdev. On top of the first two patches in this set. > Comments? The check ioctls would be very very useful, IMHO. Many filesystem tools refuse to operate on a mounted filesystem, but in some cases it'd be safe to do readonly operations on a frozen, mounted fs. -Eric -- 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/