add mounted-checking for btrfs-vol
commitddf85067bbf93408690465a5f88e208f70889130
authorMiao Xie <miaox@cn.fujitsu.com>
Thu, 9 Sep 2010 05:41:47 +0000 (9 13:41 +0800)
committerChris Mason <chris.mason@oracle.com>
Fri, 24 Sep 2010 00:26:49 +0000 (23 20:26 -0400)
treecddb7a75274094a17bb9aa5bb3a171bf604baf84
parent595cb1df15c47ffc9f119d7c3f5e3717d2b5c04d
add mounted-checking for btrfs-vol

Adding a mounted device is dangerous because it will destroy the filesystem
on that mounted device. So we add mounted-checking for btrfs-vol.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
btrfs-vol.c