rem: static void remove_cookie_from_jar(struct rootfs_vnode *dir, struct rootfs_cookie *cookie)
add: remove_cookie_from_jar(struct rootfs_vnode *dir, struct rootfs_cookie *cookie)
context: static void remove_cookie_from_jar(struct rootfs_vnode *dir, struct rootfs_cookie *cookie){	if(cookie->next)		cookie->next->prev = cookie->prev;	if(cookie->prev)		cookie->prev->next = cookie->next;	if(dir->stream.dir.jar_head == cookie)		dir->stream.dir.jar_head = cookie->next;	cookie->prev = cookie->next = NULL;}