Btrfs: Only open block devices once during mount -o subvol=
authorChris Mason <chris.mason@oracle.com>
Thu, 8 May 2008 19:05:58 +0000 (15:05 -0400)
committerChris Mason <chris.mason@oracle.com>
Thu, 25 Sep 2008 15:04:02 +0000 (11:04 -0400)
commitc1c4d91c38e6e5b29543b02d4a4fb7f007e44f70
tree09f42fd06864114dc5ab6676c4ed6aee9e9e024e
parenta68d5933a0e409592860229b35230c8e87155472
Btrfs: Only open block devices once during mount -o subvol=

btrfs_open_devices needed a check to see if the device was already
open.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/volumes.c