msync
__strong_reference(__msync, msync);
int msync(void *, size_t, int);
struct msync_args msync;
if (msync(p, map_size, 0) != 0) {
if ((msync(pp[i], len, MS_SYNC)) == -1) {
if (msync((void *)status_info, 0, 0) < 0)