+int __commit_transaction(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root);
+int commit_tree_roots(struct btrfs_trans_handle *trans,
+ struct btrfs_fs_info *fs_info);
+int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root);
+void btrfs_abort_transaction(struct btrfs_trans_handle *trans, int error);