lf_iterator
lf_iteratelocks_sysid(int sysid, lf_iterator *fn, void *arg)
lf_iteratelocks_vnode(struct vnode *vp, lf_iterator *fn, void *arg)
int lf_iteratelocks_sysid(int sysid, lf_iterator *, void *);
int lf_iteratelocks_vnode(struct vnode *vp, lf_iterator *, void *);