linux-master/lib/sbitmap.c

723 			    struct sbq_wait *sbq_wait)
725 	if (!sbq_wait->sbq) {
726 		sbq_wait->sbq = sbq;
728 		add_wait_queue(&ws->wait, &sbq_wait->wait);
733 void sbitmap_del_wait_queue(struct sbq_wait *sbq_wait)
735 	list_del_init(&sbq_wait->wait.entry);
736 	if (sbq_wait->sbq) {
737 		atomic_dec(&sbq_wait->sbq->ws_active);
738 		sbq_wait->sbq = NULL;
745 			     struct sbq_wait *sbq_wait, int state)
747 	if (!sbq_wait->sbq) {
749 		sbq_wait->sbq = sbq;
751 	prepare_to_wait_exclusive(&ws->wait, &sbq_wait->wait, state);
756 			 struct sbq_wait *sbq_wait)
758 	finish_wait(&ws->wait, &sbq_wait->wait);
759 	if (sbq_wait->sbq) {
761 		sbq_wait->sbq = NULL;