From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Aneesh Kumar K.V" Subject: ext4_inode difference between e2fsprogs and ext4 Date: Thu, 11 Oct 2007 14:30:48 +0530 Message-ID: <470DE640.3040101@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-ext4 , Mingming Cao To: Theodore Tso , Andreas Dilger Return-path: Received: from E23SMTP02.au.ibm.com ([202.81.18.163]:57970 "EHLO e23smtp02.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754588AbXJKJBk (ORCPT ); Thu, 11 Oct 2007 05:01:40 -0400 Received: from sd0109e.au.ibm.com (d23rh905.au.ibm.com [202.81.18.225]) by e23smtp02.au.ibm.com (8.13.1/8.13.1) with ESMTP id l9B91Pss013263 for ; Thu, 11 Oct 2007 19:01:25 +1000 Received: from d23av04.au.ibm.com (d23av04.au.ibm.com [9.190.235.139]) by sd0109e.au.ibm.com (8.13.8/8.13.8/NCO v8.5) with ESMTP id l9B94vhf244044 for ; Thu, 11 Oct 2007 19:04:57 +1000 Received: from d23av04.au.ibm.com (loopback [127.0.0.1]) by d23av04.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id l9B916sA009441 for ; Thu, 11 Oct 2007 19:01:07 +1000 Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org in e2fsprogs we have union { struct { __u16 l_i_blocks_hi; __u16 i_pad1; __u16 l_i_uid_high; /* these 2 fields */ __u16 l_i_gid_high; /* were reserved2[0] */ __u32 l_i_reserved2; } linux2; In ext4 we have union { struct { __le16 l_i_reserved1; /* Obsoleted fragment number/size which are removed in ext4 */ __le16 l_i_file_acl_high; __le16 l_i_uid_high; /* these 2 fields */ __le16 l_i_gid_high; /* were reserved2[0] */ __u32 l_i_reserved2; } linux2; Last week we were discussing about taking that l_i_reserved1 and using that for making file_acl 64 bit and using the lower l_i_reserved2 for 64 bit dir_acl. Now where will i put l_i_blocks_hi ? -aneesh