From e1409cef85894f96f4bddc6633d64d1c5275e2a3 Mon Sep 17 00:00:00 2001
From: Miao Xie <miaox@cn.fujitsu.com>
Date: Wed, 15 May 2013 07:48:16 +0000
Subject: [PATCH] Btrfs: fix unprotected root node of the subvolume's inode
 rb-tree

The root node of the rb-tree may be changed, so we should get it under
the lock. Fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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Reading git-format-patch failed