vcache_tryvget
error = vcache_tryvget(vp);
error = vcache_tryvget(dvp);
error = vcache_tryvget(foundobj);
error = vcache_tryvget(foundobj);
error = vcache_tryvget(foundobj);
error2 = vcache_tryvget(searchdir);
if ((error = vcache_tryvget(vp)) == 0) {
error = vcache_tryvget(vp);
int vcache_tryvget(vnode_t *);