u8 *data, struct yaffs_ext_tags *tags);
int nandmtd2_mark_block_bad(struct yaffs_dev *dev, int block_no);
int nandmtd2_query_block(struct yaffs_dev *dev, int block_no,
u8 *data, struct yaffs_ext_tags *tags);
int nandmtd2_mark_block_bad(struct yaffs_dev *dev, int block_no);
int nandmtd2_query_block(struct yaffs_dev *dev, int block_no,