extern unsigned long highest_memmap_pfn;
-#ifdef CONFIG_SMP
-extern int putback_active_lru_page(struct zone *zone, struct page *page);
-#else
-static inline int putback_active_lru_page(struct zone *zone, struct page *page)
-{
- return 0;
-}
-#endif
-
/*
* in mm/vmscan.c:
*/