ioctl_gntdev_get_offset_for_vaddr
(struct ioctl_gntdev_get_offset_for_vaddr*) data, td);
gntdev_get_offset_for_vaddr(struct ioctl_gntdev_get_offset_for_vaddr *arg,
_IOWR('E', 5, struct ioctl_gntdev_get_offset_for_vaddr)