Re: DIO panic on 2.6.21.5

[Badari Pulavarty <pbadari@us.ibm.com>]

Zach Brown wrote:

>
> On Jun 27, 2007, at 8:01 PM, Badari Pulavarty wrote:
>
>> Hi Zach,
>>
>> One of our perf. team ran into this while doing some runs.
>> I didn't see anything obvious - it looks like we converted
>> async IO to synchronous one. I didn't spend much time digging
>> around.
>
>
> It looks pretty bad, a *shouldn't happen* kind of case.  I'm sure it  
> just means I missed some case :/.
>
>> Is this a known issue ? Any ideas ?
>
>
> I haven't seen it before, no.  Do they have a reliable recipe to  
> reproduce it?
>
> In any case, I'll dig in early next week when I'm back from OLS.  I'm  
> pretty confident that we'll be able to find the case.  Please let me  
> know if it's urgent and I should try and find time before then.
>
> Thanks for reporting it.

I asked our perf. team to reproduce and print out refcount, if this 
happens again.
We can look at it when we get back.

Thanks,
Badari