AQ_SHUTDOWN
alq->aq_flags |= AQ_SHUTDOWN;
alq->aq_flags & AQ_SHUTDOWN ||
while (alq->aq_freebytes < len && !(alq->aq_flags & AQ_SHUTDOWN)) {
if (alq->aq_flags & AQ_SHUTDOWN) {
alq->aq_flags & AQ_SHUTDOWN ||
while (contigbytes < len && !(alq->aq_flags & AQ_SHUTDOWN)) {
if (alq->aq_flags & AQ_SHUTDOWN) {