tree 2104949c48c4549331ac632ae265bfca8532b279
parent ff24858c65d9c518af41aad22fb964685351051a
author Arne Jansen <sensille@gmx.net> 1358410929 -0700
committer Chris Mason <chris.mason@fusionio.com> 1358817491 -0500

Btrfs: prevent qgroup destroy when there are still relations

Currently you can just destroy a qgroup even though it is in use by other qgroups
or has qgroups assigned to it. This patch prevents destruction of qgroups unless
they are completely unused. Otherwise destroy will return EBUSY.

Reported-by: Eric Hopper <hopper@omnifarious.org>
Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>