From 3368d001ba5df44930d986e82b1b497d4da285ba Mon Sep 17 00:00:00 2001
From: Qu Wenruo <quwenruo@cn.fujitsu.com>
Date: Thu, 16 Apr 2015 14:34:17 +0800
Subject: [PATCH] btrfs: qgroup: Record possible quota-related extent for
 qgroup.

Add hook in add_delayed_ref_head() to record quota-related extent record
into delayed_ref_root->dirty_extent_record rb-tree for later qgroup
accounting.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
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Reading git-format-patch failed