chfs_update
int chfs_update(struct vnode *, const struct timespec *,
error = chfs_update(vp, NULL, NULL, UPDATE_WAIT);
chfs_update(vp, NULL, NULL, UPDATE_WAIT);
chfs_update(vp, NULL, NULL, UPDATE_WAIT);
chfs_update(dvp, NULL, NULL, UPDATE_WAIT);
chfs_update(vp, NULL, NULL, UPDATE_CLOSE);
chfs_update(vp, NULL, NULL, UPDATE_CLOSE);
error = chfs_update(vp,
error = chfs_update(vp, NULL, NULL, UPDATE_WAIT);
error = chfs_update(vp, NULL, NULL, UPDATE_WAIT);
error = chfs_update(vp, NULL, NULL, UPDATE_WAIT);
chfs_update(vp, NULL, NULL, UPDATE_WAIT);