diff -rup a/mem.c b/mem.c

--- a/mem.c	2016-05-16 19:47:34.000000000 -0400

+++ b/mem.c	2016-07-22 17:15:03.874544654 -0400

@@ -207,6 +207,13 @@ SYS_FUNC(mremap)

 	return RVAL_DECODED | RVAL_HEX;

 }

+#ifndef MADV_DONTDUMP

+#define MADV_DONTDUMP 16

+#endif

+#ifndef MADV_DODUMP

+#define MADV_DODUMP 17

+#endif

+

 #include "xlat/madvise_cmds.h"

 SYS_FUNC(madvise)

Only in b: mem.c.orig