Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934468Ab3E1OvH (ORCPT ); Tue, 28 May 2013 10:51:07 -0400 Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120]:36837 "EHLO cdptpa-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934374Ab3E1OvF (ORCPT ); Tue, 28 May 2013 10:51:05 -0400 X-Authority-Analysis: v=2.0 cv=JqNzXbEC c=1 sm=0 a=/DbS/tiKggfTkRRHPZEB4g==:17 a=Qsx_du5GiBkA:10 a=bfzWQn4VrGAA:10 a=COy8bEXE5_QA:10 a=S1A5HrydsesA:10 a=N659UExz7-8A:10 a=fxJcL_dCAAAA:8 a=p-BZX3ACu3QA:10 a=QfKxxUxMAAAA:8 a=m5ll2mmbexfkeFbRm1QA:9 a=pILNOxqGKmIA:10 a=4t1vQi-YglNiGWNj:21 a=iG7ObV0x8g7S0wWv:21 a=/DbS/tiKggfTkRRHPZEB4g==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 67.78.168.186 Message-ID: <51A4C456.6000708@ubuntu.com> Date: Tue, 28 May 2013 10:51:02 -0400 From: Phillip Susi User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/20130509 Thunderbird/17.0.6 MIME-Version: 1.0 To: Jens Axboe CC: CAI Qian , Dave Chinner , xfs@oss.sgi.com, LKML Subject: Re: Loopback device hung [was Re: xfs deadlock on 3.9-rc5 running xfstests case #78] References: <1462091996.435156.1364882416199.JavaMail.root@redhat.com> <247719576.438259.1364882929749.JavaMail.root@redhat.com> <20130402070537.GP6369@dastard> <20130402071937.GC3670@kernel.dk> <20130402073035.GD3670@kernel.dk> <14055702.547701.1364891947331.JavaMail.root@redhat.com> <20130402090047.GF3670@kernel.dk> <985125161.581860.1364895066584.JavaMail.root@redhat.com> <20130402094834.GA4667@kernel.dk> <20130403114142.GP4667@kernel.dk> <515C4D9D.10103@ubuntu.com> <515DE2FE.1080201@ubuntu.com> In-Reply-To: <515DE2FE.1080201@ubuntu.com> X-Enigmail-Version: 1.5.1 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1820 Lines: 44 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Jens, did this get lost in the shuffle, or just miss the window for 3.10 and will go in 3.11? On 4/4/2013 4:30 PM, Phillip Susi wrote: >> I have not tested it yet, but I am pretty sure it won't work. >> It looks like the patch changes the BLKRRPART path to go ahead >> and remove existing partitions when GENHD_FL_NO_PARTSCAN is set. >> loop doesn't issue the BLKRRPART ioctl when !LO_FLAGS_PARTSCAN so >> this won't help. I think loop needs to set GENHD_FL_NO_PARTSCAN >> and then issue the ioctl regardless of the LO_FLAGS_PARTSCAN flag >> to get the partitions to be removed. I will try to test >> tonight. > > After testing, my initial thoughts appeared to have been correct. > I had to modify the patch as follows. To test, simply do: > > truncate -s 10m img losetup /dev/loop0 img parted /dev/loop0 > mklabel msdos mkpart primary ext2 1m 2m quit ls /dev/loop0* > > Note the /dev/loop0p1 node. Run losetup -d /dev/loop0 and see if > it is still there. > > -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJRpMRWAAoJEJrBOlT6nu75yUYH/1PSNmTOBYgvEqQclWPBTd8n Fm95yILcIlJWdUr3gUvQmjBax1NzKnG3NZ2U4hucpCcJH4FkHSTTFl5uZ3wU1B/Q nvuQoSqYXVP+V9PVSTsUsxOI4Mvw5YP5sFwSdwRKpkCldXOuHrRZsuccFtkQducU AIij42jvI1un+/qc6NLW+/S+rcLGUj21boPmX3g80km1De9QMrYrbGAAEbFO3rrq fzsvGuVvOroGppLGpze4iMDn060Lxrw6//KDGtiUBIeD8kZCFGkBh1KupHqLLzXm gmfdlHIqAR5uWB29m9TOlRbHPzdeQutwt8zL2LOYlCft5OiBIOW8dT8EFkl2Buw= =7BGq -----END PGP SIGNATURE----- -- 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/