839     store_io_thread *me = (store_io_thread *)arg;  in extstore_io_thread()  local
840     store_engine *e = me->e;  in extstore_io_thread()
843         pthread_mutex_lock(&me->mutex);  in extstore_io_thread()
844         if (me->queue == NULL) {  in extstore_io_thread()
845             pthread_cond_wait(&me->cond, &me->mutex);  in extstore_io_thread()
852         if (me->queue != NULL) {  in extstore_io_thread()
855             io_stack = me->queue;  in extstore_io_thread()
861                     me->queue_tail = end->next;  in extstore_io_thread()
865             me->depth -= i;  in extstore_io_thread()
866             me->queue = end->next;  in extstore_io_thread()
869         pthread_mutex_unlock(&me->mutex);  in extstore_io_thread()