From: =?UTF-8?B?VMO2csO2ayBFZHdpbg==?= Subject: Re: 4.7.0-rc7 ext4 error in dx_probe Date: Thu, 18 Aug 2016 10:44:43 +0300 Message-ID: <91215941-68ab-fb8c-586f-4c7eb35bd29c@etorok.net> References: <20160718141723.GA8809@sig21.net> <7849bcd2-142d-0a12-0a04-7d0c3b6d788f@etorok.net> <20160805103544.kbt7znbzypvi5ofx@sig21.net> <20160805170228.GA19960@birch.djwong.org> <20160805181136.mcjnnvuo5m6kpxzb@sig21.net> <20160817200232.cd5ehiwbwbnggddo@sig21.net> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: Johannes Stezenbach , linux-kernel@vger.kernel.org, tytso@mit.edu, linux-ext4@vger.kernel.org To: "Darrick J. Wong" Return-path: In-Reply-To: <20160817200232.cd5ehiwbwbnggddo@sig21.net> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org On 2016-08-17 23:02, Johannes Stezenbach wrote: > On Fri, Aug 05, 2016 at 08:11:36PM +0200, Johannes Stezenbach wrote: >> On Fri, Aug 05, 2016 at 10:02:28AM -0700, Darrick J. Wong wrote: >>> >>> When you're back on 4.7, can you apply this patch[1] to see if it fixes >>> the problem? I speculate that the new parallel dir lookup code enables >>> multiple threads to be verifying the same directory block buffer at the >>> same time. >>> >>> [1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/fs/ext4/inode.c?id=b47820edd1634dc1208f9212b7ecfb4230610a23 >> >> I added the patch, rebuilt and rebooted. It will take some time >> before I'll report back since the issue is so hard to reproduce. > > FWIW, so far the issue didn't appear again after I applied > the patch to 4.7.0, and I stressed it a bit with repo syncs, > AOSP builds, rsync backups etc. Same here: I've been using 4.7.0+patch daily, and everything is working fine. Best regards, --Edwin