Btrfs: fix wrong missing device counter decrease
authorMiao Xie <miaox@cn.fujitsu.com>
Wed, 16 Jul 2014 10:38:01 +0000 (18:38 +0800)
committerChris Mason <clm@fb.com>
Tue, 19 Aug 2014 15:52:10 +0000 (08:52 -0700)
commit3a7d55c84c76a3088ddfb798c187182143683a16
treeaa8207c5030d654a2897e7363a6d4a2e7bd6a1d6
parent69611ac810af8e88eeb5ebd851589a0e8cc90860
Btrfs: fix wrong missing device counter decrease

The missing devices are accounted by its own fs device, for example
the missing devices in seed filesystem will be accounted by the fs device
of the seed filesystem, not by the new filesystem which is based on
the seed filesystem, so when we remove the missing device in the
seed filesystem, we should decrease the counter of its own fs device.
Fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
fs/btrfs/volumes.c