[ofa-general] Re: [ewg] [PATCH] IB/ipoib: avoid WARN_ON on NULL path->ah

[Eli Cohen]

On Tue, Sep 23, 2008 at 02:15:47PM +0300, Moni Shoua wrote:
> I agree
> I gave a thought here.
> It's possible, when path_rec_completion() is called with nonzero status, to do nothing with ah.
> Only when path query finishes with success do the replacement.
> This is good for cases when old_ah is still good (no remote LID change happened).

But what you're saying is that even though no SM responded to a path
query, you still want to use the old ah which is an even stronger
request than what the original path did (which waited until the new
path resolution to complete before updating the ah). Can you think of
scenario that can cause this?