rem: for(cookie = dir->stream.u.dir.jar_head; cookie; cookie = cookie->u.dir.next) { if(cookie->u.dir.ptr == v) {
add: for (cookie = dir->stream.u.dir.jar_head; cookie; cookie = cookie->u.dir.next) { if (cookie->u.dir.ptr == v)
context: update_dircookies(struct devfs_vnode *dir, struct devfs_vnode *v){	struct devfs_cookie *cookie;	for(cookie = dir->stream.u.dir.jar_head; cookie; cookie = cookie->u.dir.next) {		if(cookie->u.dir.ptr == v) {			cookie->u.dir.ptr = v->dir_next;		}	}}