[ofa-general] [PATCH] IB/core: handle race between elements in qork queues after event

[Moni Shoua]

Roland Dreier wrote:
>  > OK. Here is an example that was viewed in our tests.
>  > One IPoIB host (client) sends a stream of multicast packets to another IPoIB host (server).
>  > SM takeover event takes place during traffic and as a result multicast info is flushed
>  > and there is a need to rejoin by hosts. Without the patch there is a chance (which according to our experience
>  > is a very big chance) that the request to rejoin will be to the old  SM and only after a retry join completes successfully.
>  > This takes too long and the patch solves it.
> 
> OK, that is fairly convincing (and it would be nice to include when
> sending the original patch).
> 
> Please resend a version that fixes the races in the patch and we can
> probably add this for 2.6.27.
> 
>  - R.
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Thanks. I will resend this patch in a series of 2 (in a different thread)
The other patch in the series is related to the one above but was sent by me earlier
in a different thread without justification.