rem: devfs_get_vnode(fs_cookie _fs, vnode_id id, fs_vnode *_vnode, bool reenter)
add: devfs_get_vnode(fs_volume _fs, vnode_id id, fs_vnode *_vnode, bool reenter)
context: devfs_get_vnode(fs_cookie _fs, vnode_id id, fs_vnode *_vnode, bool reenter){	struct devfs *fs = (struct devfs *)_fs;	TRACE(("devfs_get_vnode: asking for vnode id = %Ld, vnode = %p, r %d\n", id, _vnode, reenter));	if (!reenter)		mutex_lock(&fs->lock);	*_vnode = hash_lookup(fs->vnode_list_hash, &id);	if (!reenter)		mutex_unlock(&fs->lock);	TRACE(("devfs_get_vnode: looked it up at %p\n", *_vnode));	if (*_vnode)		return 0;	return ERR_NOT_FOUND;}