From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx5-phx2.redhat.com ([209.132.183.37]:53590 "EHLO mx5-phx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755920AbcJLTv1 (ORCPT ); Wed, 12 Oct 2016 15:51:27 -0400 Date: Wed, 12 Oct 2016 15:50:36 -0400 (EDT) From: CAI Qian To: Dave Chinner , Sage Weil , Brian Foster Cc: Jan Kara , Miklos Szeredi , tj , Al Viro , Linus Torvalds , linux-xfs , Jens Axboe , Nick Piggin , linux-fsdevel@vger.kernel.org, Dave Jones Message-ID: <885869771.578073.1476301836438.JavaMail.zimbra@redhat.com> In-Reply-To: <20161010215714.GF23194@dastard> References: <20161007070838.GA16260@quack2.suse.cz> <1720038662.1062048.1475851398433.JavaMail.zimbra@redhat.com> <1267347639.1072505.1475854075552.JavaMail.zimbra@redhat.com> <1337864351.1107846.1475866582573.JavaMail.zimbra@redhat.com> <20161009215454.GM9806@dastard> <988281682.41395.1476108629872.JavaMail.zimbra@redhat.com> <20161010215714.GF23194@dastard> Subject: [bisected] Re: local DoS - systemd hang or timeout (WAS: Re: [RFC][CFT] splice_read reworked) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-fsdevel-owner@vger.kernel.org List-ID: ----- Original Message ----- > From: "Dave Chinner" > Sent: Monday, October 10, 2016 5:57:14 PM > > > http://people.redhat.com/qcai/tmp/dmesg > > It's a page lock order bug in the XFS seek hole/data implementation. So reverted this commit against the latest mainline allows trinity run hours. Otherwise, it always hang at fdatasync() within 30 minutes. fc0561cefc04e7803c0f6501ca4f310a502f65b8 xfs: optimise away log forces on timestamp updates for fdatasync PS: tested against the vfs tree's #work.splice_read with this commit reverted is now hanging at sync() instead which won't be reproduced against the mainline so far. http://people.redhat.com/qcai/tmp/dmesg-sync CAI Qian