diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 6b052aa7b5b79..a61e06e5fbce5 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -371,10 +371,15 @@ PAGEFLAG(Idle, idle, PF_ANY)
 #define PAGE_MAPPING_KSM	2
 #define PAGE_MAPPING_FLAGS	(PAGE_MAPPING_ANON | PAGE_MAPPING_KSM)
 
+static __always_inline int PageAnonHead(struct page *page)
+{
+	return ((unsigned long)page->mapping & PAGE_MAPPING_ANON) != 0;
+}
+
 static __always_inline int PageAnon(struct page *page)
 {
 	page = compound_head(page);
-	return ((unsigned long)page->mapping & PAGE_MAPPING_ANON) != 0;
+	return PageAnonHead(page);
 }
 
 #ifdef CONFIG_KSM
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 087ba3e417ecc..7be1ce8b6be0e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1048,7 +1048,7 @@ static bool free_pages_prepare(struct page *page, unsigned int order)
 			bad += free_pages_check(page + i);
 		}
 	}
-	if (PageAnon(page))
+	if (PageAnonHead(page))
 		page->mapping = NULL;
 	bad += free_pages_check(page);
 	if (bad)