From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=lV6b=7A=vger.kernel.org=linux-btrfs-owner@kernel.org>
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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no
	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 005A7C433DF
	for <linux-btrfs@archiver.kernel.org>; Mon, 18 May 2020 16:23:07 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [23.128.96.18])
	by mail.kernel.org (Postfix) with ESMTP id D53DF20657
	for <linux-btrfs@archiver.kernel.org>; Mon, 18 May 2020 16:23:07 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1728113AbgERQXH (ORCPT <rfc822;linux-btrfs@archiver.kernel.org>);
        Mon, 18 May 2020 12:23:07 -0400
Received: from mx2.suse.de ([195.135.220.15]:44138 "EHLO mx2.suse.de"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1727938AbgERQXH (ORCPT <rfc822;linux-btrfs@vger.kernel.org>);
        Mon, 18 May 2020 12:23:07 -0400
X-Virus-Scanned: by amavisd-new at test-mx.suse.de
Received: from relay2.suse.de (unknown [195.135.220.254])
        by mx2.suse.de (Postfix) with ESMTP id AAF27B271;
        Mon, 18 May 2020 16:23:08 +0000 (UTC)
Received: by ds.suse.cz (Postfix, from userid 10065)
        id 49847DA7AD; Mon, 18 May 2020 18:22:12 +0200 (CEST)
Date:   Mon, 18 May 2020 18:22:12 +0200
From:   David Sterba <dsterba@suse.cz>
To:     dsterba@suse.cz, Qu Wenruo <quwenruo.btrfs@gmx.com>,
        Qu Wenruo <wqu@suse.com>, linux-btrfs@vger.kernel.org
Subject: Re: [PATCH v3 0/3] btrfs: REF_COWS bit rework
Message-ID: <20200518162212.GX18421@twin.jikos.cz>
Reply-To: dsterba@suse.cz
Mail-Followup-To: dsterba@suse.cz, Qu Wenruo <quwenruo.btrfs@gmx.com>,
        Qu Wenruo <wqu@suse.com>, linux-btrfs@vger.kernel.org
References: <20200515060142.23609-1-wqu@suse.com>
 <20200515194559.GR18421@twin.jikos.cz>
 <17637fb6-1b76-32bb-b6ab-468eda982c60@gmx.com>
 <d280611d-b4ea-7365-7775-520814368b26@gmx.com>
 <20200518150331.GU18421@twin.jikos.cz>
 <20200518153859.GW18421@twin.jikos.cz>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20200518153859.GW18421@twin.jikos.cz>
User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12)
Sender: linux-btrfs-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-btrfs.vger.kernel.org>
X-Mailing-List: linux-btrfs@vger.kernel.org

On Mon, May 18, 2020 at 05:38:59PM +0200, David Sterba wrote:
> On Mon, May 18, 2020 at 05:03:31PM +0200, David Sterba wrote:
> > On Mon, May 18, 2020 at 01:13:34PM +0800, Qu Wenruo wrote:
> > - btrfs_read_tree_root
> > - btrfs_init_fs_root
> 
> With
> 
> 2291         location.objectid = BTRFS_DATA_RELOC_TREE_OBJECTID;
> 2292         root = btrfs_read_tree_root(tree_root, &location);
> 2293         if (IS_ERR(root)) {
> 2294                 ret = PTR_ERR(root);
> 2295                 goto out;
> 2296         }
> 2297         ret = btrfs_init_fs_root(root);
> 2298         if (ret)
> 2299                 goto out;
> 2300         set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);
> 2301         fs_info->data_reloc_root = root;

Enough experimenting, I don't want to leave misc-next in a broken state
so will add get_fs_root back.