From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-btrfs-owner@vger.kernel.org>
Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:52168 "EHLO
	mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK)
	by vger.kernel.org with ESMTP id S1750809AbcD1OEN (ORCPT
	<rfc822;linux-btrfs@vger.kernel.org>);
	Thu, 28 Apr 2016 10:04:13 -0400
Subject: Re: [PATCH RFC 01/16] btrfs-progs: fsck: Introduce function to check
 tree block backref in extent tree
To: Qu Wenruo <quwenruo@cn.fujitsu.com>, <linux-btrfs@vger.kernel.org>
References: <1461642543-4621-1-git-send-email-quwenruo@cn.fujitsu.com>
 <1461642543-4621-2-git-send-email-quwenruo@cn.fujitsu.com>
CC: <dsterba@suse.cz>, Lu Fengqi <lufq.fnst@cn.fujitsu.com>
From: Josef Bacik <jbacik@fb.com>
Message-ID: <6a41a204-117e-c438-9346-7acb8b9f1d1b@fb.com>
Date: Thu, 28 Apr 2016 10:03:58 -0400
MIME-Version: 1.0
In-Reply-To: <1461642543-4621-2-git-send-email-quwenruo@cn.fujitsu.com>
Content-Type: text/plain; charset="windows-1252"; format=flowed
Sender: linux-btrfs-owner@vger.kernel.org
List-ID: <linux-btrfs.vger.kernel.org>

On 04/25/2016 11:48 PM, Qu Wenruo wrote:
> From: Lu Fengqi <lufq.fnst@cn.fujitsu.com>
>
> Introduce function check_tree_block_ref() to check whether a tree block
> has correct backref in extent tree.
>
> Unlike old extent tree check method, we only use search_slot() to search
> reference, no extra structure will be allocated in heap to record what we
> have checked.
>
> This method may cause a little more IO, but should work for super large
> fs without triggering OOM.
>
> Signed-off-by: Lu Fengqi <lufq.fnst@cn.fujitsu.com>
> Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>

Reviewed-by: Josef Bacik <jbacik@fb.com>

Thanks,

Josef