mm: avoid tail page refcounting on non-THP compound pages

[deliverable/linux.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index fb1fc38b01cefbf6abbdc08331c7f9e0ae8c3436..515ec5045b60b7e5db07b66b5c87a478673f3aa4 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -496,7 +496,7 @@ static inline int page_count(struct page *page)
 
 static inline bool __compound_tail_refcounted(struct page *page)
 {
-       return !PageSlab(page) && !PageHeadHuge(page);
+       return PageAnon(page) && !PageSlab(page) && !PageHeadHuge(page);
 }
 
 /*