From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:63914 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932757AbbKDCW0 (ORCPT ); Tue, 3 Nov 2015 21:22:26 -0500 Date: Tue, 3 Nov 2015 21:22:10 -0500 From: Chris Mason To: Mark Fasheh CC: Stefan Priebe , Qu Wenruo , "linux-btrfs@vger.kernel.org" , Subject: Re: Regression in: [PATCH 4/4] btrfs: qgroup: account shared subtree during snapshot delete Message-ID: <20151104022210.GB16166@ret.masoncoding.com> References: <56367AE8.9030509@profihost.ag> <5636BDA0.4020200@cn.fujitsu.com> <20151103192625.GE15575@wotan.suse.de> <56390E29.5030702@profihost.ag> <20151103233115.GF15575@wotan.suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" In-Reply-To: <20151103233115.GF15575@wotan.suse.de> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Tue, Nov 03, 2015 at 03:31:15PM -0800, Mark Fasheh wrote: > On Tue, Nov 03, 2015 at 08:42:33PM +0100, Stefan Priebe wrote: > > Sorry don't know much about the btrfs internals. > > > > I just can reproduce this. Switching to a kernel with this patch and > > without. With it takes ages - without it's super fast. I prooved > > this several times by just rebooting to the other kernel. > > That's fine, disregard my previous e-mail - I just saw the mail Qu sent me. > There's a problem in the code that the patch calls which is causing your > performance issues. I'll CC you when I put out a fix. Thanks Mark (and Qu), I'll get the fixed version into integration once it is out. -chris