doopenclose
return doopenclose(dev, flags, fmt, PUD_REQ_BDEV, PUD_BDEV_OPEN);
return doopenclose(dev, flags, fmt, PUD_REQ_BDEV, PUD_BDEV_CLOSE);
return doopenclose(dev, flags, fmt, PUD_REQ_CDEV, PUD_CDEV_OPEN);
return doopenclose(dev, flags, fmt, PUD_REQ_CDEV, PUD_CDEV_CLOSE);