diff --git a/include/linux/mm.h b/include/linux/mm.h
index 66d881f..949bd70 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -52,6 +52,9 @@
 /* to align the pointer to the (next) page boundary */
 #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE)
 
+/* test whether an address (unsigned long or pointer) is aligned to PAGE_SIZE */
+#define PAGE_ALIGNED(addr)	IS_ALIGNED((unsigned long)addr, PAGE_SIZE)
+
 /*
  * Linux kernel virtual memory manager primitives.
  * The idea being to have a "virtual" mm in the same way