i_ctimensec
ext2_decode_extra_time(&ip->i_ctime, &ip->i_ctimensec,
ip->i_ctimensec);
ip->i_ctimensec = ts.tv_nsec;
vap->va_ctime.tv_nsec = E2DI_HAS_XTIME(ip) ? ip->i_ctimensec : 0;
int32_t i_ctimensec; /* Last inode change time. */
ip->i_ctimensec = ts.tv_nsec;
vap->va_ctime.tv_nsec = ip->i_ctimensec;