bsd/vfs/vfs_syscalls.c

3368 		if (vp->v_parent == NULLVP)
3561 			if (mydvp->v_parent != NULL) {
3562 				mydvp = mydvp->v_parent;
3745 			if (vp->v_parent) {
3747 				FSE_ARG_VNODE, vp->v_parent,
3874 		if (vp->v_parent == NULLVP)
4087 		    // v_parent link because the path that got us to this
4090 		    // system instead of just following the v_parent link.
4122 		(vp->v_parent != NULLVP) &&
4638 	    (nd.ni_vp->v_parent != NULLVP) &&
4708 	    (ndp->ni_vp->v_parent != NULLVP) &&
5842 	    (vp->v_parent != NULLVP) &&
5845 		(void) vnode_flushnamedstream(vp->v_parent, vp, ctx);
6217 	oparent = fvp->v_parent;
6398 	if (batched || (oname == fvp->v_name && oparent == fvp->v_parent)) {
6549 	if (vp->v_parent == NULLVP)
7412 	    if (fvp->v_parent != svp->v_parent) {
7415 		tmp           = fvp->v_parent;
7416 		fvp->v_parent = svp->v_parent;
7417 		svp->v_parent = tmp;