bdev_close|bdev_close bdev_discard|bdev_discard bdev_dump|bdev_dump bdev_ioctl|bdev_ioctl bdev_open|bdev_open bdev_size|bdev_size bdev_strategy|bdev_strategy bdev_type|bdev_type bdevsw_getname|bdevsw_getname bdevsw_lookup|bdevsw_lookup bdevsw_lookup_major|bdevsw_lookup_major bdwrite|bdwrite bdevvp|bdevvp