From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1FBEAC43381 for ; Sat, 30 Mar 2019 18:15:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 00C83217F5 for ; Sat, 30 Mar 2019 18:15:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731016AbfC3SPN (ORCPT ); Sat, 30 Mar 2019 14:15:13 -0400 Received: from outgoing-auth-1.mit.edu ([18.9.28.11]:40190 "EHLO outgoing.mit.edu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730769AbfC3SPN (ORCPT ); Sat, 30 Mar 2019 14:15:13 -0400 Received: from callcc.thunk.org (96-72-102-169-static.hfc.comcastbusiness.net [96.72.102.169] (may be forged)) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id x2UIEdF3012667 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 30 Mar 2019 14:14:41 -0400 Received: by callcc.thunk.org (Postfix, from userid 15806) id 6B26A421A03; Sat, 30 Mar 2019 14:14:39 -0400 (EDT) Date: Sat, 30 Mar 2019 14:14:39 -0400 From: "Theodore Ts'o" To: liu.song11@zte.com.cn Cc: adilger@dilger.ca, jack@suse.cz, fishland@aliyun.com, jack@suse.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] jbd2: do not start commit when t_updates does not back tozero Message-ID: <20190330181439.GE15757@mit.edu> Mail-Followup-To: Theodore Ts'o , liu.song11@zte.com.cn, adilger@dilger.ca, jack@suse.cz, fishland@aliyun.com, jack@suse.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org References: <201903301524441962443@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201903301524441962443@zte.com.cn> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Mar 30, 2019 at 03:24:44PM +0800, liu.song11@zte.com.cn wrote: > > When we unzipped bunch of files under ext4, sometimes got hungtask warning > which indicate process was waiting on "j_wait_transaction_locked". Can you give a clean repro of this? What sort of storage device are you using, and what sort of file systems and mount options are you using? I unzip files under ext4 all the time w/o any problems.... - Ted