Re: [PATCH V4] IB/uverbs: Fix race between uverbs_close and remove_one

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On Thu, Mar 17, 2016 at 09:38:30PM +0530, Devesh Sharma wrote:

> To my mind mutex is *not* solving the problem completely unless we
> make it a coarser grained lock. The possible deadlock problem still
> lingers around it.

Review the last version I sent, with this statement in mind:

> > The fundamental thing is that the ib_uverbs_free_hw_resources thread
> > must wait for ib_uverbs_close's ib_uverbs_cleanup_ucontext to finish,
> > if necessary, not the other way around.

It sure doesn't look like it can deadlock...

Jason
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