SEGM_FORCE_CKP
fs->lfs_sp->seg_flags & (SEGM_CLEAN | SEGM_FORCE_CKP)) {
SEGM_CKP | SEGM_FORCE_CKP | SEGM_SYNC);
SEGM_CKP | SEGM_FORCE_CKP | SEGM_SYNC);
else if (!(sp->seg_flags & SEGM_FORCE_CKP)) {
lfs_segwrite(ap->a_vp->v_mount, SEGM_CKP | SEGM_FORCE_CKP);