KQ_CLOSING
if ((kq->kq_state & KQ_CLOSING) == KQ_CLOSING) {
if ((kq->kq_state & KQ_CLOSING) != 0) {
if ((kq->kq_state & KQ_CLOSING) != 0) {
KASSERT((kq->kq_state & KQ_CLOSING) != KQ_CLOSING,
kq->kq_state |= KQ_CLOSING;
if ((kq->kq_state & KQ_CLOSING) != 0)