linux-kernel - Re: "fb-defio: fix page list with concurrent processes"

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Date:	Thu, 03 Jul 2008 17:10:24 -0400
From:	Markus Armbruster <armbru@...hat.com>
To:	"Jaya Kumar" <jayakumar.lkml@...il.com>
Cc:	"Jeremy Fitzhardinge" <jeremy@...p.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: "fb-defio: fix page list with concurrent processes"

"Jaya Kumar" <jayakumar.lkml@...il.com> writes:

> On Mon, Jun 16, 2008 at 3:05 PM, Jeremy Fitzhardinge <jeremy@...p.org> wrote:
>> Your patch "fb-defio: fix page list with concurrent processes" definitely
>> seems to help with the suspend/resume problem I had with the Xen pvfb
>> device.  Is it queued up anywhere?  It seems to be a real bugfix, and should
>> probably be queued for 2.6.26...
>
> It isn't currently queued. I had intended to improve its performance
> by taking advantage of Andrew's suggestion of using !list_empty on the
> page->lru to avoid walking the page list to find the duplicate page,
> but I ran into trouble since the page starts off being on the lru
> list. I'll try to take a look at doing this next weekend.
>
> Thanks,
> jaya

Jaya, any news?
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