blk_queue_required_elevator_features  853 block/blk-settings.c EXPORT_SYMBOL_GPL(blk_queue_required_elevator_features);
blk_queue_required_elevator_features 1705 drivers/block/null_blk_main.c 		blk_queue_required_elevator_features(nullb->q,
blk_queue_required_elevator_features  487 drivers/scsi/sd_zbc.c 	blk_queue_required_elevator_features(sdkp->disk->queue,
blk_queue_required_elevator_features 1111 include/linux/blkdev.h extern void blk_queue_required_elevator_features(struct request_queue *q,