Fix btrfs_open_devices to deal with changes since the scan ioctls

Devices can change after the scan ioctls are done, and btrfs_open_devices
needs to be able to verify them as they are opened and used by the FS.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 454fe8103329..4df6b1608f91 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -71,16 +71,16 @@ struct btrfs_fs_devices {
         /* the device with this id has the most recent coyp of the super */
         u64 latest_devid;
         u64 latest_trans;
-        u64 lowest_devid;
         u64 num_devices;
+        u64 open_devices;
         struct block_device *latest_bdev;
-        struct block_device *lowest_bdev;
         /* all of the devices in the FS */
         struct list_head devices;
 
         /* devices not currently being allocated */
         struct list_head alloc_list;
         struct list_head list;
+        int mounted;
 };
 
 struct btrfs_bio_stripe {