Re: [PATCH] DM-CRYPT: Scale to multiple CPUs v3 on 2.6.37-rc* ?

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On 11/07/2010 08:45 PM, Andi Kleen wrote:
>> I read about barrier-problems and data getting to the partition when
>> using dm-crypt and several layers so I don't know if that could be
>> related
> 
> Barriers seem to be totally broken on dm-crypt currently.

Can you explain it?

Barriers/flush change should work, if it is broken, it is not only dm-crypt.
(dm-crypt simply relies on dm-core implementation, when barrier/flush
request come to dmcrypt, all previous IO must be already finished).

Milan

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