Re: [BUG] md hang at schedule in md_write_start

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On 09/11/2013 01:54 AM, NeilBrown wrote:
> On Tue, 10 Sep 2013 13:09:05 +0200 Jack Wang <jinpu.wang@xxxxxxxxxxxxxxxx>
> wrote:
> 
>> snip
>>
>> Hi Neil,
>>
>> I notice you send out pull request for md update, which include fix for
>> this bug.
>>
>> I think we'd better include the fix to stable tree at least from 3.4
>> above, what do you think?
> 
> I don't think it is a situation that is at all like to occur in normal usage,
> so it doesn't seem justified for -stable.
> 
> Do you disagree?  Did you ever experience the deadlock in normal usage or
> only in artificial situations?

Yes, we do see this BUG in our production environment, so I think it's
good to include it in stable tree.


> 
>>
>> md: avoid deadlock when dirty buffers during md_stop.
>>
>>> http://git.neil.brown.name/?p=md.git;a=commit;h=260fa034ef7a4ff8b73068b48ac497edd5217491
>>
>> BTW: It will be great if you could add my Reported-by and Tested-by:)
> 
> Sorry I forgot those.  To late to add them now.
> 
Fine, Thanks all the time:)

Regards,
Jack


> NeilBrown
> 
> 
> 
>>
>> Best regards,
>> Jack
>>
> 

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