From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Galbraith Subject: Re: [rfc patch] fs,reiserfs: unlock superblock before callling reiserfs_quota_on_mount() Date: Tue, 14 Aug 2012 19:26:13 +0200 Message-ID: <1344965173.4282.3.camel@marge.simpson.net> References: <1344949583.14924.36.camel@marge.simpson.net> <1344954183.6724.8.camel@gandalf.stny.rr.com> <1344955168.14924.85.camel@marge.simpson.net> <1344956189.5477.1.camel@marge.simpson.net> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Steven Rostedt , "linux-rt-users@vger.kernel.org" , Frederic Weisbecker , LKML To: Thomas Gleixner Return-path: Received: from mailout-de.gmx.net ([213.165.64.23]:35277 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753061Ab2HNR0R (ORCPT ); Tue, 14 Aug 2012 13:26:17 -0400 In-Reply-To: Sender: linux-rt-users-owner@vger.kernel.org List-ID: On Tue, 2012-08-14 at 17:18 +0200, Thomas Gleixner wrote: > On Tue, 14 Aug 2012, Mike Galbraith wrote: > > > On Tue, 2012-08-14 at 16:39 +0200, Mike Galbraith wrote: > > > On Tue, 2012-08-14 at 10:23 -0400, Steven Rostedt wrote: > > > > On Tue, 2012-08-14 at 15:06 +0200, Mike Galbraith wrote: > > > > > Greetings, > > > > > > > > > > Using openSUSE's "partitioner" gizmo to set up a reiserfs partition with > > > > > quotas and whatnot enabled rewarded me with a deadlock. > > > > > > > > Is this just a -rt bug? Can't this deadlock also in mainline? > > > > > > It didn't with a NOPREEMPT kernel the one time I tried it, which seemed > > > mighty odd when I stared at the rt deadlock. I'll give it another go, I > > > likely just munged q/d NOPREEMPT test. > > > > Nope, no screw-up. Maybe it can deadlock, but it refused to do so. > > Lockdep should tell you if it could ... I'll give that a shot. I would expect the thing to gripe.. but then I expected the damn thing to deadlock properly with NOPREEMPT too, so.. :) -Mike