From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de ([195.135.220.15]:49685 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751549AbbKCXbR (ORCPT ); Tue, 3 Nov 2015 18:31:17 -0500 Date: Tue, 3 Nov 2015 15:31:15 -0800 From: Mark Fasheh To: Stefan Priebe Cc: Qu Wenruo , "linux-btrfs@vger.kernel.org" , jbacik@fb.com, Chris Mason Subject: Re: Regression in: [PATCH 4/4] btrfs: qgroup: account shared subtree during snapshot delete Message-ID: <20151103233115.GF15575@wotan.suse.de> Reply-To: Mark Fasheh References: <56367AE8.9030509@profihost.ag> <5636BDA0.4020200@cn.fujitsu.com> <20151103192625.GE15575@wotan.suse.de> <56390E29.5030702@profihost.ag> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <56390E29.5030702@profihost.ag> Sender: linux-btrfs-owner@vger.kernel.org List-ID: 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 -- Mark Fasheh