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From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Jens Axboe <jens.axboe@oracle.com>
Cc: linux-kernel@vger.kernel.org, chris.mason@oracle.com
Subject: Re: [PATCH] Fix congestion_wait() sync/async vs read/write confusion
Date: Wed, 8 Jul 2009 21:15:21 +0200	[thread overview]
Message-ID: <200907082115.22104.rjw@sisk.pl> (raw)
In-Reply-To: <20090708184703.GW23611@kernel.dk>

On Wednesday 08 July 2009, Jens Axboe wrote:
> Hi,
> 
> This one isn't great, we currently have broken congestion wait logic in
> the kernel. 2.6.30 is impacted as well, so this patch should go to
> stable too once it's in -git. I'll let this one simmer until tomorrow,
> then ask Linus to pull it. The offending commit breaking this is
> 1faa16d22877f4839bd433547d770c676d1d964c.
> 
> Meanwhile, it could potentially cause buffered writeout slowdowns in the
> kernel. Perhaps the 2.6.30 regression in that area is caused by this?
> Would be interesting if the submitter could test. I can't find the list,
> CC'ing Rafael.

Thanks, but I'm not sure which one do you mean in particular.
http://bugzilla.kernel.org/show_bug.cgi?id=13408 looks like it might be
somewhat related.

The complete list is at http://lkml.org/lkml/2009/7/6/383 .

Best,
Rafael

  parent reply	other threads:[~2009-07-08 19:15 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-07-08 18:47 Jens Axboe
2009-07-08 19:12 ` Chris Mason
2009-07-14 11:44   ` Jan Kara
2009-07-14 13:12     ` Chris Mason
2009-07-14 14:40       ` Jan Kara
2009-07-08 19:15 ` Rafael J. Wysocki [this message]
2009-07-08 22:35 ` Trond Myklebust
2009-07-08 22:44   ` Trond Myklebust
2009-07-09 12:47     ` Jens Axboe
2009-07-09 14:02     ` Christoph Hellwig

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