From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752105Ab1AYGTy (ORCPT ); Tue, 25 Jan 2011 01:19:54 -0500 Received: from smtp1.linux-foundation.org ([140.211.169.13]:48181 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750831Ab1AYGTx (ORCPT ); Tue, 25 Jan 2011 01:19:53 -0500 Date: Mon, 24 Jan 2011 22:19:16 -0800 From: Andrew Morton To: Toshiyuki Okajima Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, Jan Kara Subject: Re: [RFC][PATCH] radix_tree: radix_tree_gang_lookup_tag_slot may not return forever. Message-Id: <20110124221916.041ea5d7.akpm@linux-foundation.org> In-Reply-To: <20110125135345.ca4bfd79.toshi.okajima@jp.fujitsu.com> References: <20110121153431.acd113d8.toshi.okajima@jp.fujitsu.com> <20110121153154.1ca74dd2.akpm@linux-foundation.org> <20110125135345.ca4bfd79.toshi.okajima@jp.fujitsu.com> X-Mailer: Sylpheed 2.7.1 (GTK+ 2.18.9; 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 On Tue, 25 Jan 2011 13:53:45 +0900 Toshiyuki Okajima wrote: > > It should be fairly simple to reproduce this hang with the userspace > > test harness (http://userweb.kernel.org/~akpm/stuff/rtth.tar.gz) and to > > then demonstrate that the fix fixes it. > > > > If you have time, could you please do that and then send the rtth > > updates to me? > > > I add regression2_test for this bug into your testset (rtth.tar.gz). > This is originated from regression1_test. Thanks. I applied your radix_tree-radix_tree_gang_lookup_tag_slot-may-not-return-forever.patch to rtth's radix-tree.c (it was needed!) and refreshed http://userweb.kernel.org/~akpm/stuff/rtth.tar.gz