rem: struct vnode *vnode = descriptor->vnode;
add: struct vnode *vnode = descriptor->u.vnode;
context: common_read_stat(struct file_descriptor *descriptor, struct stat *stat){	struct vnode *vnode = descriptor->vnode;	FUNCTION(("common_read_stat: stat 0x%p\n", stat));	return FS_CALL(vnode, read_stat)(vnode->mount->cookie, vnode->private_node, stat);}