From: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Date: Wed, 14 Aug 2013 01:13:36 +0000 (+0800)
Subject: Btrfs: fix oops when writing dirty qgroups to disk
X-Git-Tag: v3.12-rc1~40^2~57
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4082bd3d734c41b122a91d2a5aded4b76baa84b2;p=pandora-kernel.git

Btrfs: fix oops when writing dirty qgroups to disk

When disabling quota, we should clear out list 'dirty_qgroups',otherwise,
we will get oops if enabling quota again. Fix this by abstracting similar
code from del_qgroup_rb().

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Reviewed-by: Miao Xie <miaox@cn.fujitsu.com>
Reviewed-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
---

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