disk_statechg_t
disk_statechg_t *dscp;
if ((dscp = (disk_statechg_t *)queue_remove(g_schg_queue))
static disk_statechg_t *
disk_statechg_t *dscp =
(disk_statechg_t *)dmalloc(sizeof (disk_statechg_t));
dfree(dscp, sizeof (disk_statechg_t));