dlist
struct dlist *list; /* map list based on inode truncation bits */
struct dlist *fow;
slist dlist, users;
slist_init(&dlist);
slist_add(&dlist, (void *)(uintptr_t)ppp_id);
if (slist_length(&dlist) <= 0)
slist_itr_first(&dlist);
while (slist_itr_has_next(&dlist)) {
ppp_id = (uintptr_t)slist_itr_next(&dlist);
slist_fini(&dlist);