dax_flush
EXPORT_SYMBOL_GPL(dax_flush);
dax_flush(cache_dev->dm_dev->dax_dev, pos, size);
dax_flush(dax_dev, kaddr, nr_pages << PAGE_SHIFT);
dax_flush(dax_dev, page_address(pfn_to_page(pfn)), count * PAGE_SIZE);
dax_flush(srcmap->dax_dev, daddr, size);
dax_flush(iomap->dax_dev, kaddr + offset, size);
dax_flush(dax_dev, kaddr, nr_pages << PAGE_SHIFT);
void dax_flush(struct dax_device *dax_dev, void *addr, size_t size);