From: Miao Xie <miaox@cn.fujitsu.com>
Date: Thu, 28 Feb 2013 10:05:36 +0000 (+0000)
Subject: Btrfs: fix wrong reserved space when deleting a snapshot/subvolume
X-Git-Tag: v3.9-rc1~17^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c58aaad2ac46f8dbce9ab7f7a7a3726e332a56ee;p=pandora-kernel.git

Btrfs: fix wrong reserved space when deleting a snapshot/subvolume

When deleting a snapshot/subvolume, we need remove root ref/backref,
dir entries and update the dir inode, so we must reserve free space
for those operations.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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