get_data
(void) get_data(&fstate, &sec.dyn);
(void) get_data(&fstate, sinfo);
(void) get_data(&fstate, sinfo);
extern zilog_t *zil_open(objset_t *os, zil_get_data_t *get_data);
zil_open(objset_t *os, zil_get_data_t *get_data)
zilog->zl_get_data = get_data;