elevator_features 104 block/elevator.c if (!elv_support_features(e->elevator_features, required_features)) elevator_features 648 block/elevator.c if (elv_support_features(e->elevator_features, elevator_features 797 block/mq-deadline.c .elevator_features = ELEVATOR_F_ZBD_SEQ_WRITE, elevator_features 79 include/linux/elevator.h const unsigned int elevator_features;