[ofa-general] Re: [PATCH] IB/mlx4 mlx4_ib: commands timeout

[Tziporet Koren]

Eli Cohen wrote:
> On Mon, 2007-05-07 at 15:04 +0300, Michael S. Tsirkin wrote:
>   
>> How likely is this to help in practice?
>>
>>     
> Like I said, when the system is very busy. In this case the command may
> actually complete very soon but wait_for_completion_timeout() will
> nevertheless return zero since the task did not get CPU time before the
> specified timeout expired. In this case we would like to check if done
> is signaled and thus not fail the command.
>   
This is not a theoretical issue - we actually saw this problem here with 
some tests.

Tziporet