FS_XFLAG_REALTIME
if (xflags & FS_XFLAG_REALTIME)
flags |= FS_XFLAG_REALTIME;
bool rtflag = (fa->fsx_xflags & FS_XFLAG_REALTIME);
(FS_XFLAG_REALTIME | FS_XFLAG_NODEFRAG | FS_XFLAG_FILESTREAM)