From mboxrd@z Thu Jan 1 00:00:00 1970 From: ryding Subject: question about append direct io Date: Thu, 06 Aug 2015 17:26:44 +0800 Message-ID: <55C32854.1050501@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: linux-ext4@vger.kernel.org Return-path: Received: from userp1040.oracle.com ([156.151.31.81]:18821 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754899AbbHFJ1r (ORCPT ); Thu, 6 Aug 2015 05:27:47 -0400 Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t769Rkql009226 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 6 Aug 2015 09:27:47 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by userv0021.oracle.com (8.13.8/8.13.8) with ESMTP id t769RkWL030753 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL) for ; Thu, 6 Aug 2015 09:27:46 GMT Received: from abhmp0013.oracle.com (abhmp0013.oracle.com [141.146.116.19]) by aserv0122.oracle.com (8.13.8/8.13.8) with ESMTP id t769Rksh010689 for ; Thu, 6 Aug 2015 09:27:46 GMT Sender: linux-ext4-owner@vger.kernel.org List-ID: Hi all, Sorry for bothering. I see ext4 add inode to orphan when doing append direct io. Is this used to roll back the old isize when a crash is happened during the direct io? Is there other purpose to do so? Thanks, Ryan