page_swap_entry
ret = xa_store(&mte_pages, page_swap_entry(page).val, tag_storage,
swp_entry_t entry = page_swap_entry(page);
entry = page_swap_entry(folio_page(folio, i));
entry = page_swap_entry(folio_page(folio, i));
ret, swap_dev_pos(page_swap_entry(page)));
swp_entry_t entry = page_swap_entry(subpage);
swp_entry_t page_swpentry = page_swap_entry(page);