* released.
*
* The private flag check is essential for subpage as we need
- * to store extra bitmap using page->private.
+ * to store extra bitmap using folio private.
*/
- if (page->mapping != inode->i_mapping || !PagePrivate(page)) {
+ if (page->mapping != inode->i_mapping || !folio_test_private(folio)) {
unlock_page(page);
return -EAGAIN;
}