diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index f64e7bc..2c6d5f6 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3925,6 +3925,20 @@ static struct page *__page_frag_refill(struct page_frag_cache *nc,
 	return page;
 }
 
+void __page_frag_drain(struct page *page, unsigned int order,
+		       unsigned int count)
+{
+	VM_BUG_ON_PAGE(page_ref_count(page) == 0, page);
+
+	if (page_ref_sub_and_test(page, count)) {
+		if (order == 0)
+			free_hot_cold_page(page, false);
+		else
+			__free_pages_ok(page, order);
+	}
+}
+EXPORT_SYMBOL(__page_frag_drain);
+
 void *__alloc_page_frag(struct page_frag_cache *nc,
 			unsigned int fragsz, gfp_t gfp_mask)
 {