diff --git a/include/linux/mm.h b/include/linux/mm.h
index 8b08607..cd9df66 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2146,6 +2146,7 @@
 extern int memory_failure(unsigned long pfn, int trapno, int flags);
 extern void memory_failure_queue(unsigned long pfn, int trapno, int flags);
 extern int unpoison_memory(unsigned long pfn);
+extern int get_hwpoison_page(struct page *page);
 extern int sysctl_memory_failure_early_kill;
 extern int sysctl_memory_failure_recovery;
 extern void shake_page(struct page *p, int access);