-#define MADV_NORMAL 0x0 /* default page-in behavior */
-#define MADV_RANDOM 0x1 /* page-in minimum required */
-#define MADV_SEQUENTIAL 0x2 /* read-ahead aggressively */
-#define MADV_WILLNEED 0x3 /* pre-fault pages */
-#define MADV_DONTNEED 0x4 /* discard these pages */
-#define MADV_REMOVE 0x5 /* remove these pages & resources */
-
-/* compatibility flags */
-#define MAP_ANON MAP_ANONYMOUS
-#define MAP_FILE 0
-