From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Chinner Subject: Re: [PATCH v3 00/22] loop: Issue O_DIRECT aio using bio_vec Date: Tue, 23 Oct 2012 11:07:33 +1100 Message-ID: <20121023000733.GG4291@dastard> References: <1350918922-6096-1-git-send-email-dave.kleikamp@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Zach Brown , "Maxim V. Patlasov" To: Dave Kleikamp Return-path: Content-Disposition: inline In-Reply-To: <1350918922-6096-1-git-send-email-dave.kleikamp@oracle.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org 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? Cheers, Dave. -- Dave Chinner david@fromorbit.com