Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759651Ab2FGK1H (ORCPT ); Thu, 7 Jun 2012 06:27:07 -0400 Received: from merlin.infradead.org ([205.233.59.134]:57008 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753710Ab2FGK1G convert rfc822-to-8bit (ORCPT ); Thu, 7 Jun 2012 06:27:06 -0400 Message-ID: <1339064814.23343.14.camel@twins> Subject: Re: processes hung after sys_renameat, and 'missing' processes From: Peter Zijlstra To: Linus Torvalds Cc: Dave Jones , Al Viro , Linux Kernel , Miklos Szeredi , Jan Kara Date: Thu, 07 Jun 2012 12:26:54 +0200 In-Reply-To: References: <20120603223617.GB7707@redhat.com> <20120603231709.GP30000@ZenIV.linux.org.uk> <20120603232820.GQ30000@ZenIV.linux.org.uk> <20120606194233.GA1537@redhat.com> <20120606230040.GA18089@redhat.com> Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Mailer: Evolution 3.2.2- Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 611 Lines: 13 On Wed, 2012-06-06 at 16:31 -0700, Linus Torvalds wrote: > PeterZ - the fact that we use mutex_lock_nested with > I_MUTEX_PARENT/I_MUTEX_CHILD/nothing hopefully doesn't screw us up in > case we get it wrong, right? Sadly, if you get that annotation wrong you can annotate an actual deadlock away. This the reason you have to be very careful when annotating stuff. -- 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/