pub unsafe extern "system" fn IoReserveKsrPersistentMemoryEx(
    driverobject: *const DRIVER_OBJECT,
    physicaldeviceobject: *const DEVICE_OBJECT,
    physicaldeviceid: *const UNICODE_STRING,
    datatag: *const u16,
    dataversion: u32,
    size: usize,
    flags: u32,
    datahandle: *mut *mut c_void,
) -> NTSTATUS