sid2pid
sid2pid_t *sid2pid;
while ((sid2pid = avl_destroy_nodes(&sid2pid_hb->tree,
kmem_free(sid2pid, sizeof (sid2pid_t));
sid2pid_t *sid2pid;
while ((sid2pid = avl_destroy_nodes(&sid2pid_hb->tree,
kmem_free(sid2pid, sizeof (sid2pid_t));
struct sid2pid *flink;
struct sid2pid *blink;
struct sid2pid head;