CGF_BLKMAPS
cgflags[oldsb->fs_ncg - 1] |= CGF_DIRTY | CGF_BLKMAPS;
cgflags[i] |= CGF_DIRTY | CGF_BLKMAPS | CGF_INOMAPS;
if (cgflags[i] & CGF_BLKMAPS) {
cgflags[cgn] |= CGF_DIRTY | CGF_BLKMAPS;
cgflags[cgn] |= CGF_DIRTY | CGF_BLKMAPS;