From: Andreas Dilger Subject: Re: RFC: Clarifying Direct I/O Semantics Date: Fri, 21 Aug 2009 17:04:04 -0600 Message-ID: <20090821230404.GA5931@webber.adilger.int> References: Mime-Version: 1.0 Content-Type: text/plain; CHARSET=US-ASCII Content-Transfer-Encoding: 7BIT Cc: linux-ext4@vger.kernel.org To: "Theodore Ts'o" Return-path: Received: from sca-es-mail-1.Sun.COM ([192.18.43.132]:41728 "EHLO sca-es-mail-1.sun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932413AbZHUXEC (ORCPT ); Fri, 21 Aug 2009 19:04:02 -0400 Received: from fe-sfbay-10.sun.com ([192.18.43.129]) by sca-es-mail-1.sun.com (8.13.7+Sun/8.12.9) with ESMTP id n7LN41ke025066 for ; Fri, 21 Aug 2009 16:04:01 -0700 (PDT) Content-disposition: inline Received: from conversion-daemon.fe-sfbay-10.sun.com by fe-sfbay-10.sun.com (Sun Java(tm) System Messaging Server 7u2-7.04 64bit (built Jul 2 2009)) id <0KOR00000151CD00@fe-sfbay-10.sun.com> for linux-ext4@vger.kernel.org; Fri, 21 Aug 2009 16:04:01 -0700 (PDT) In-reply-to: Sender: linux-ext4-owner@vger.kernel.org List-ID: On Aug 21, 2009 17:54 -0400, Theodore Ts'o wrote: > http://ext4.wiki.kernel.org/index.php/Clarifying_Direct_IO's_Semantics > > P.S. For people who are too lazy to click on the above link, here's the > version of the page as of this writing :-) > > = Introduction = > > The exact semantics of Direct I/O (O_DIRECT) are well specified. It is Umm, "NOT well specified"? Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc.