Btrfs: Handle transid == 0 while opening devices

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

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 501d23d3ebfd..3fbf0834e884 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -262,7 +262,7 @@ int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
                         goto error_brelse;
 
                 transid = btrfs_super_generation(disk_super);
-                if (transid > latest_transid) {
+                if (!latest_transid || transid > latest_transid) {
                         latest_devid = devid;
                         latest_transid = transid;
                         latest_bdev = bdev;