From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932486Ab2JWAx5 (ORCPT ); Mon, 22 Oct 2012 20:53:57 -0400 Received: from rcsinet15.oracle.com ([148.87.113.117]:37591 "EHLO rcsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932321Ab2JWAx4 (ORCPT ); Mon, 22 Oct 2012 20:53:56 -0400 Message-ID: <5085EA94.7000901@oracle.com> Date: Mon, 22 Oct 2012 19:53:40 -0500 From: Dave Kleikamp User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121012 Thunderbird/16.0.1 MIME-Version: 1.0 To: Dave Chinner CC: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Zach Brown , "Maxim V. Patlasov" Subject: Re: [PATCH v3 00/22] loop: Issue O_DIRECT aio using bio_vec References: <1350918922-6096-1-git-send-email-dave.kleikamp@oracle.com> <20121023000733.GG4291@dastard> In-Reply-To: <20121023000733.GG4291@dastard> X-Enigmail-Version: 1.4.5 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Source-IP: ucsinet22.oracle.com [156.151.31.94] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/22/2012 07:07 PM, Dave Chinner wrote: > On Mon, Oct 22, 2012 at 10:15:00AM -0500, Dave Kleikamp wrote: >> This is the current version of the patchset I presented at the LSF-MM >> Summit in San Francisco in April. I apologize for letting it go so >> long before re-submitting. >> >> This patchset was begun by Zach Brown and was originally submitted for >> review in October, 2009. Feedback was positive, and I have picked up >> where he left off, porting his patches to the latest mainline kernel >> and adding support more file systems. >> >> This patch series adds a kernel interface to fs/aio.c so that kernel code can >> issue concurrent asynchronous IO to file systems. It adds an aio command and >> file system methods which specify io memory with pages instead of userspace >> addresses. >> >> This series was written to reduce the current overhead loop imposes by >> performing synchronus buffered file system IO from a kernel thread. These >> patches turn loop into a light weight layer that translates bios into iocbs. > > I note that there is no support for XFS in this patch set. Is there > a particular problem that prevents XFS from being converted, or it > just hasn't been done? It just hasn't been done. It wasn't one of the trivial ones so I put it off at first, and after that, it's an oversight. I'll follow up with an xfs patch for your review. Thanks, Shaggy > > Cheers, > > Dave. >