+/* Full packed tags with ECC, used for oob tags */
+void yaffs_pack_tags2(struct yaffs_dev *dev,
+ struct yaffs_packed_tags2 *pt,
+ const struct yaffs_ext_tags *t, int tags_ecc);
+void yaffs_unpack_tags2(struct yaffs_dev *dev,
+ struct yaffs_ext_tags *t, struct yaffs_packed_tags2 *pt,
+ int tags_ecc);