/* Synchronize the region starting at ADDR and extending LEN bytes with the
file it maps. Filesystem operations on a file being mapped are
unpredictable before this is done. */
-int msync __P ((__caddr_t __addr, size_t __len));
+int msync __P ((__caddr_t __addr, size_t __len, int flags));
/* Advise the system about particular usage patterns the program follows
for the region starting at ADDR and extending LEN bytes. */