IOMAP_DIO_OVERWRITE_ONLY
if (dio_flags & IOMAP_DIO_OVERWRITE_ONLY) {
{IOMAP_DIO_OVERWRITE_ONLY, "DIO_OVERWRITE_ONLY" }, \
unsigned int flags = IOMAP_DIO_OVERWRITE_ONLY;
ASSERT(flags & IOMAP_DIO_OVERWRITE_ONLY);