Both send and recv completed only ever go from not set to set on a live
requests, so that's easy. need_inval only goes from set to cleared
so I'm not too worried about it either, but due to the lack of atomic
bitops there it will need better memory barries, or just a switch
to bitops..
But looking at this in a little more detail I wonder if we just want
a recount on the nvme_rdma_request, untested patch below.
I'll give it a shot.
Btw, in our brave new world that should probably be a refcnt_t instead
of an atomic_t, but that's a trivial search and replace.
Works like a charm :)
Sending a newer v3 soon.
Thanks Christoph!
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