walk_elem
struct walk_elem *next;
free_list(struct walk_elem *list)
struct walk_elem *next = list->next;
append_node(struct walk_elem **list, dev_info_t *dip)
struct walk_elem *tail;
struct walk_elem *elem = kmem_alloc(sizeof (*elem), KM_SLEEP);
struct walk_elem *head = NULL;
struct walk_elem *next = head->next;