[PATCH] IB/core: Protect against self-requeue of a cq work item

[Doug Ledford]

On Wed, 2017-03-08 at 22:00 +0200, Sagi Grimberg wrote:
> We need to make sure that the cq work item does not
> run when we are destroying the cq. Unlike flush_work,
> cancel_work_sync protects against self-requeue of the
> work item (which we can do in ib_cq_poll_work).
> 
> Signed-off-by: Sagi Grimberg <sagi at grimberg.me>

Hi Sagi, I didn't know if this was a theoretical or you actually hit
this in practice, so I pulled it for -rc in case it was actually being
hit in the wild.  Thanks.

-- 
Doug Ledford <dledford at redhat.com>
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