From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763933AbXGRNtR (ORCPT ); Wed, 18 Jul 2007 09:49:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754271AbXGRNtJ (ORCPT ); Wed, 18 Jul 2007 09:49:09 -0400 Received: from an-out-0708.google.com ([209.85.132.245]:50463 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753018AbXGRNtI (ORCPT ); Wed, 18 Jul 2007 09:49:08 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=Ee3RDWYu5oEJsHD8bh69AM2A9ub7X4tlDWYRjwK3DVpLB5RP7899kXBJ0wF+9be5YOLUtQHfE+GZ3jBDD1C6RWL/ZDJcL/5Gqt6dslZACG+hFEFFEQakyrIq1ZFd4rdTEZTU6d5CkVQ4CLw+YpUxMUqmFiEkeHh/ZXogD4KGPAg= Message-ID: Date: Wed, 18 Jul 2007 15:49:07 +0200 From: "Radoslaw Szkodzinski" To: "Linux Kernel Mailing List" , xfs@oss.sgi.com Subject: XFS -git changes and Linux-VServer patch porting MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Linux-VServer patch adds 2 new flags: barrier and iunlink. With recent changes in -git (filestreams), XFS now lacks di_flags bits to add these. iunlink flag adds Copy-on-Write semantics to hard links, while barrier flag signifies a filesystem barrier no virtual context can pass. I'd like to know how to possibly resolve this problem w/o negatively impacting performance (especially of iunlink) or changing on-disc format in an incompatible way, as well as being more future-proof.