MS_SYNC
if (msync(outbuf, stat.st_size, MS_SYNC) != 0)
if (msync(dbg_vdso, dbg_vdso_size, MS_SYNC) != 0) {
} else if (msync(vdso, vdso_size, MS_SYNC) != 0) {
if (flags & ~(MS_ASYNC | MS_INVALIDATE | MS_SYNC))
if ((flags & MS_ASYNC) && (flags & MS_SYNC))
if ((flags & MS_SYNC) && file &&
ret = msync(smap, MMAP_SZ, MS_SYNC);
ret = msync(smap, MMAP_SZ, MS_SYNC);
msync(fmem, buf_size, MS_SYNC);