linux-kernel - Re: [PATCH 0/5] Preallocate swap + minor fix.

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Message-ID: <4BFDCB82.6030908@crca.org.au>
Date:	Thu, 27 May 2010 11:31:46 +1000
From:	Nigel Cunningham <ncunningham@...a.org.au>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	pm list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	TuxOnIce-devel <tuxonice-devel@...ts.tuxonice.net>
Subject: Re: [PATCH 0/5] Preallocate swap + minor fix.

Hi.

On 27/05/10 07:21, Rafael J. Wysocki wrote:
> On Wednesday 26 May 2010, Nigel Cunningham wrote:
>> Hi all.
>>
>> In current in-kernel hibernation code, swap is allocated as the image is
>> being written.
>>
>> The first four patches in this series rework things so that all swap
>> that will be used is allocated prior to any data being written to disk.
>> The fourth patch might look like too much for one patch, but it's
>> necessary to not break bisecting.
>>
>> The fifth patch fixes a minor error in displaying the speed at which I/O
>> occurred.
>>
>> This is the beginning of what I hope will be a long series of sets of
>> patches, first working towards adding support for properly asynchronous
>> I/O (not batching, as is currently done), then compression, multiple
>> swap devices and more. In short, this is the beginning of work on
>> merging TuxOnIce functionality a bit at a time.
>>
>> The work is coming now because I recently finished my previous job, so
>> I'm seeking to get some of those jobs I've been wanting to do for a long
>> time out of the way. If anyone wants to employ me to do this work, I
>> wouldn't say no! :)
>>
>> Please excuse me if there are wrapping issues with the patches - I'm
>> using Thunderbird, and haven't sent a patch series for quite a while, so
>> don't remember the fancy git mailer way (will have to look it up).
>>
>> Rafael, these and future patches will be available at:
>>
>> git://git.kernel.org/pub/scm/linux/kernel/git/nigelc/tuxonice-head.git#for-rafael
>
> Thanks for the patches, I'll have a look at them as soon as I can.

Thank you! I've got other stuff to work on today, but hope to prepare 
another set of patches tomorrow.

> I haven't replied to your hibernation algorithm idea, mostly because I didn't
> have the time to look into it more thoroughly and I don't remember all of the
> details.  I'm still going to reply to it, though.

Thanks.

Nigel
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