Btrfs: Add the ability to find and remove dead roots after a crash.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 6d031daa7779..9d2a0a3f674d 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2028,6 +2028,8 @@ static int create_subvol(struct btrfs_root *root, char *name, int namelen)
 
         btrfs_set_root_blocknr(&root_item, bh_blocknr(subvol));
         btrfs_set_root_refs(&root_item, 1);
+        memset(&root_item.drop_progress, 0, sizeof(root_item.drop_progress));
+        root_item.drop_level = 0;
         brelse(subvol);
         subvol = NULL;