lastfree
void (*lastfree)(mblk_t *, dblk_t *), int kmflags)
dbp->db_free = dbp->db_lastfree = lastfree;
db->db_free = db->db_lastfree = lastfree;
Node *lastfree; /* any free position is before this position */
t->lastfree = gnode(t, size); /* all positions are free */
while (t->lastfree > t->node) {
t->lastfree--;
if (ttisnil(gkey(t->lastfree)))
return t->lastfree;
void (*lastfree)(mblk_t *, dblk_t *), int kmflags)
dbp->db_free = dbp->db_lastfree = lastfree;