hammer2_io_data
char *hammer2_io_data(hammer2_io_t *dio, off_t lbase);
bdata = hammer2_io_data(chain->dio, chain->bref.data_off);
bdata = hammer2_io_data(dio, chain->bref.data_off);
bzero(hammer2_io_data(dio, lbase), lsize);
bzero(hammer2_io_data(dio, lbase), lsize);
bdata = hammer2_io_data(dio, chain->bref.data_off);
bdata = hammer2_io_data(dio, chain->bref.data_off);
dtmp = hammer2_io_data(dio, off),
char *hammer2_io_data(hammer2_io_t *dio, off_t lbase);
bdata = hammer2_io_data(chain->dio, chain->bref.data_off);
bdata = hammer2_io_data(dio, chain->bref.data_off);
bzero(hammer2_io_data(dio, lbase), lsize);
bzero(hammer2_io_data(dio, lbase), lsize);
bdata = hammer2_io_data(dio, chain->bref.data_off);
bdata = hammer2_io_data(dio, chain->bref.data_off);
dtmp = hammer2_io_data(dio, off),