#endif
#ifdef CONFIG_MIGRATION
-extern int nfs_migrate_page(struct address_space *,
- struct page *, struct page *, enum migrate_mode);
+int nfs_migrate_folio(struct address_space *, struct folio *dst,
+ struct folio *src, enum migrate_mode);
+#else
+#define nfs_migrate_folio NULL
#endif
static inline int