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Date: Wed, 18 Aug 2010 16:36:27 +0200
From: Milan Broz <mbroz@redhat.com>
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Subject: Re: [dm-crypt] dm-crypt flush-to-disk freezes
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To: dm-crypt@saout.de

On 08/18/2010 03:18 PM, Heinz Diehl wrote:
> On 18.08.2010, Milan Broz wrote: 
> 
>> btw I hope that in 2.6.36 we switch to global workqueues
>> per cpu for dm-crypt, unfortunately Alasdair is still waiting
>> with committing it (patches are ready and I am using it myself).
>> (It can help or it can make it worse here. It needs testing.)
> 
> Where can I get these patches?

Not yet in upstream dm tree still...

So my working version is temporarily here
http://mbroz.fedorapeople.org/dm-crypt/

It basically patch from Andi Kleen with some minor fixes, split
into 4 parts for easy review.
(You have to apply _always_ all 4 patches.)

Version for 2.6.34/35 is split into one file (actually I am using
this version on my stable machine now).
Probably this is what you want.

Please note one thing - it creates threads per CPU, but work
submitted by one cpu should never be processed by other thread.
So it helps if you have parallel application but will not help too
much if all work is committed from one process.
More discussion - see dm-devel archive.

Milan