#define MADV_VPS_PURGE 6 /* Purge pages from VM page cache */
#define MADV_VPS_INHERIT 7 /* Inherit parents page size */
+/* common/generic parameters */
+#define MADV_REMOVE 9 /* remove these pages & resources */
+#define MADV_DONTFORK 10 /* don't inherit across fork */
+#define MADV_DOFORK 11 /* do inherit across fork */
+
/* The range 12-64 is reserved for page size specification. */
#define MADV_4K_PAGES 12 /* Use 4K pages */
#define MADV_16K_PAGES 14 /* Use 16K pages */