Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761509AbYBVHiZ (ORCPT ); Fri, 22 Feb 2008 02:38:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750899AbYBVHiN (ORCPT ); Fri, 22 Feb 2008 02:38:13 -0500 Received: from smtp1.linux-foundation.org ([207.189.120.13]:58044 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750807AbYBVHiM (ORCPT ); Fri, 22 Feb 2008 02:38:12 -0500 X-Greylist: delayed 329 seconds by postgrey-1.27 at vger.kernel.org; Fri, 22 Feb 2008 02:38:12 EST Date: Thu, 21 Feb 2008 23:24:18 -0800 From: Andrew Morton To: Jens Axboe Cc: KAMEZAWA Hiroyuki , Kamalesh Babulal , Linux Kernel Mailing List , linuxppc-dev@ozlabs.org, Ingo Molnar , Srivatsa Vaddagiri , Dhaval Giani , Andy Whitcroft , Balbir Singh Subject: Re: [BUG] Linux 2.6.25-rc2 - Regression from 2.6.24-rc1-git1 softlockup while bootup on powerpc Message-Id: <20080221232418.b93db8d9.akpm@linux-foundation.org> In-Reply-To: <20080219083633.GN23197@kernel.dk> References: <47B67E5E.4010001@linux.vnet.ibm.com> <20080217192913.GO23197@kernel.dk> <20080219170432.9c04376f.kamezawa.hiroyu@jp.fujitsu.com> <20080219083633.GN23197@kernel.dk> X-Mailer: Sylpheed 2.4.7 (GTK+ 2.12.1; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 775 Lines: 19 On Tue, 19 Feb 2008 09:36:34 +0100 Jens Axboe wrote: > But I think the radix 'scan over entire tree' is a bit fragile. eek, it had better not be. Was this an error in the caller? Hope so. > This > patch adds a parallel hlist for ease of properly browsing the members, Even though io_contexts are fairly uncommon, adding more stuff to a data structure was a pretty sad alternative to fixing a bug in radix_tree_gang_lookup(), or to fixing a bug in a caller of it. IOW: what exactly went wrong here?? -- 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/