From: Benjamin LaHaise <bcrl@kvack.org>
To: Suparna Bhattacharya <suparna@in.ibm.com>
Cc: linux-aio@kvack.org, linux-kernel@vger.kernel.org,
wli@holomorphy.com, zab@zabbo.net, mason@suse.com,
ysaito@hpl.hp.com
Subject: Re: Pending AIO work/patches
Date: Mon, 20 Jun 2005 14:10:08 -0400 [thread overview]
Message-ID: <20050620181007.GA4031@kvack.org> (raw)
In-Reply-To: <20050620120154.GA4810@in.ibm.com>
On Mon, Jun 20, 2005 at 05:31:54PM +0530, Suparna Bhattacharya wrote:
> (1) Updating AIO to use wait-bit based filtered wakeups (me/wli)
> Status: Updated to 2.6.12-rc6, needs review
> (2) Buffered filesystem AIO read/write (me/Ben)
> Status: aio write: Updated to 2.6.12-rc6, needs review
> Status: aio read : Needs rework against readahead changes in mainline
I've looked over the patches from today and they seem quite sane. Comments
pending...
> (3) POSIX AIO support (Bull: Laurent/Sebastian or Oracle: Joel)
> Status: Needs review and discussion ?
The latest version incorporates changes from the last round of feedback
(great work Sebastien!) and updates the library license, so people should
definately take a closer look. This includes the necessary changes for
in-kernel signal support, as well as minimal conversion done on iocbs (the
layout matches the in-kernel iocb).
A quick reading shows that most of it looks quite good. I have to stare
at the cancellation code a bit more closely, though.
> (4) AIO for pipes (Chris Mason)
> Status: Needs update to latest kernels
This likely needs a rewrite with whatever the final semaphore operations
turn out to look like, as it gets very easy to convert down() into
aio_down() and that minimises the changes to the code.
> (5) Asynchronous semaphore implementation (Ben/Trond?)
> Status: Posted - under development & discussion
I got the aio_down() variant working with cancellation now, and should be
able to post an updated series of patches against 2.6.12 shortly.
> (6) epoll - AIO integration (Zach Brown/Feng Zhou/wli)
> Status: Needs resurrection ?
What are folks thoughts in this area? Zach's patches took the approach of
making multishot iocbs possible, which helped avoid the overhead of plain
aio_poll's command setup, which was quite visible in pipetest. Zach -- did
you do any benchmarking on your aio-epoll patches?
> (7) Vector AIO (aio readv/writev) (Yasushi Saito)
> Status: Needs resurrection ?
Zach also made some noises about this recently...
-ben
--
"Time is what keeps everything from happening all at once." -- John Wheeler
next prev parent reply other threads:[~2005-06-20 18:08 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-20 12:01 Pending AIO work/patches Suparna Bhattacharya
2005-06-20 13:13 ` Trond Myklebust
2005-06-20 14:32 ` Sébastien Dugué
2005-06-20 16:01 ` [PATCH 0/6] Integrate AIO with wait-bit based filtered wakeups Suparna Bhattacharya
2005-06-20 16:20 ` [PATCH 1/6] Add a wait queue argument to wait_bit action() Suparna Bhattacharya
2005-06-20 16:24 ` [PATCH 2/6] Rename __lock_page to lock_page_slow Suparna Bhattacharya
2005-06-28 16:52 ` Zach Brown
2005-06-29 9:51 ` Suparna Bhattacharya
2005-07-24 22:17 ` Christoph Hellwig
2005-07-24 22:36 ` Christoph Hellwig
2005-07-26 1:10 ` Suparna Bhattacharya
2005-06-20 16:28 ` [PATCH 3/6] Interfaces to initialize and to test a wait_bit key Suparna Bhattacharya
2005-06-20 16:30 ` [PATCH 4/6] Add default io wait bit field in task struct Suparna Bhattacharya
2005-06-20 16:33 ` [PATCH 5/6] AIO wait bit and AIO wake bit for filtered wakeups Suparna Bhattacharya
2005-06-20 16:36 ` [PATCH 6/6] AIO wait page and AIO lock page Suparna Bhattacharya
2005-06-30 15:49 ` [PATCH 0/6] Integrate AIO with wait-bit based filtered wakeups Sébastien Dugué
2005-07-01 7:37 ` Suparna Bhattacharya
2005-06-20 18:10 ` Benjamin LaHaise [this message]
2005-06-20 18:51 ` Pending AIO work/patches Zach Brown
2005-06-21 7:36 ` Sébastien Dugué
2005-06-21 19:03 ` William Lee Irwin III
2005-06-24 10:49 ` [PATCH 0/2] Buffered filesystem AIO read/write Suparna Bhattacharya
2005-06-24 11:21 ` [PATCH 1/2] Filesystem AIO read Suparna Bhattacharya
2005-06-24 11:40 ` [PATCH 2/2] Filesystem AIO write Suparna Bhattacharya
2005-06-24 16:10 ` [PATCH 0/2] Buffered filesystem AIO read/write Jeremy Allison
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