1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 901943e4754b..74bee8cecf4c 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -369,8 +369,13 @@ PAGEFLAG_FALSE(Uncached)
 PAGEFLAG(HWPoison, hwpoison, PF_ANY)
 TESTSCFLAG(HWPoison, hwpoison, PF_ANY)
 #define __PG_HWPOISON (1UL << PG_hwpoison)
+extern bool set_hwpoison_free_buddy_page(struct page *page);
 #else
 PAGEFLAG_FALSE(HWPoison)
+static inline bool set_hwpoison_free_buddy_page(struct page *page)
+{
+        return 0;
+}
 #define __PG_HWPOISON 0
 #endif