60 #define	NULL_NHASH(vp) (&null_node_hashtbl[vfs_hash_index(vp) & null_hash_mask])  argument
107 	struct vnode *vp;  in null_hashget_locked()  local
128 		vp = NULLTOV(a);  in null_hashget_locked()
129 		VNPASS(!VN_IS_DOOMED(vp), vp);  in null_hashget_locked()
130 		if (vp->v_mount != mp)  in null_hashget_locked()
132 		vref(vp);  in null_hashget_locked()
133 		return (vp);  in null_hashget_locked()
143 	struct vnode *vp;  in null_hashget()  local
158 		vp = NULLTOV(a);  in null_hashget()
159 		VNPASS(!VN_IS_DOOMED(vp), vp);  in null_hashget()
160 		if (vp->v_mount != mp)  in null_hashget()
162 		vs = vget_prep_smr(vp);  in null_hashget()
164 		VNPASS(vs != VGET_NONE, vp);  in null_hashget()
165 		vget_finish_ref(vp, vs);  in null_hashget()
166 		return (vp);  in null_hashget()
196 null_destroy_proto(struct vnode *vp, void *xp)  in null_destroy_proto()  argument
199 	lockmgr(&vp->v_lock, LK_EXCLUSIVE, NULL);  in null_destroy_proto()
200 	VI_LOCK(vp);  in null_destroy_proto()
201 	vp->v_data = NULL;  in null_destroy_proto()
202 	vp->v_vnlock = &vp->v_lock;  in null_destroy_proto()
203 	vp->v_op = &dead_vnodeops;  in null_destroy_proto()
204 	VI_UNLOCK(vp);  in null_destroy_proto()
205 	vgone(vp);  in null_destroy_proto()
206 	vput(vp);  in null_destroy_proto()
212  * Vp is the alias vnode, lowervp is the lower vnode.
222 	struct vnode *vp;  in null_nodeget()  local
245 	    &null_vnodeops, &vp);  in null_nodeget()
252 	VNPASS(vp->v_object == NULL, vp);  in null_nodeget()
253 	VNPASS((vn_irflag_read(vp) & VIRF_PGREAD) == 0, vp);  in null_nodeget()
256 	xp->null_vnode = vp;  in null_nodeget()
259 	vp->v_type = lowervp->v_type;  in null_nodeget()
260 	vp->v_data = xp;  in null_nodeget()
261 	vp->v_vnlock = lowervp->v_vnlock;  in null_nodeget()
266 		null_destroy_proto(vp, xp);  in null_nodeget()
277 		vp->v_object = lowervp->v_object;  in null_nodeget()
278 		vn_irflag_set(vp, VIRF_PGREAD);  in null_nodeget()
281 		vn_irflag_set(vp, VIRF_INOTIFY);  in null_nodeget()
283 		vn_irflag_set(vp, VIRF_INOTIFY_PARENT);  in null_nodeget()
285 		vp->v_vflag |= VV_ROOT;  in null_nodeget()
287 	error = insmntque1(vp, mp);  in null_nodeget()
291 		vp->v_object = NULL;  in null_nodeget()
292 		null_destroy_proto(vp, xp);  in null_nodeget()
296 	vn_set_state(vp, VSTATE_CONSTRUCTED);  in null_nodeget()
299 	*vpp = vp;  in null_nodeget()
321 null_checkvp(struct vnode *vp, char *fil, int lno)  in null_checkvp()  argument
323 	struct null_node *a = VTONULL(vp);  in null_checkvp()
330 	if (vp->v_op != null_vnodeop_p) {  in null_checkvp()
337 		panic("null_checkvp %p", vp);  in null_checkvp()
341 		panic ("null with unref'ed lowervp, vp %p lvp %p",  in null_checkvp()
342 		    vp, a->null_lowervp);  in null_checkvp()