--- 716875e53520ecb4afe8ae7edd1e39a7eb75032a
+++ 8b6ba7bb695dfa3ebdfd8a70263f3b835535c0e4
@@ -458,6 +458,8 @@ int add_to_page_cache_locked(struct page
 				pgoff_t index, gfp_t gfp_mask);
 int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
 				pgoff_t index, gfp_t gfp_mask);
+int __add_to_page_cache_lru(struct page *page, struct address_space *mapping,
+				pgoff_t offset, gfp_t gfp_mask, int tail);
 extern void delete_from_page_cache(struct page *page);
 extern void __delete_from_page_cache(struct page *page);
 int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask);