ffs_wapbl_stop
int ffs_wapbl_stop(struct mount *, int);
error = ffs_wapbl_stop(mp, doforce && (mntflags & MNT_FORCE));
error = ffs_wapbl_stop(mp, mp->mnt_flag & MNT_FORCE);
ffs_wapbl_stop(mp, MNT_FORCE);