[PATCH] nvmet-rdma: Don't use the inline buffer in order to avoid allocation for small reads

[Christoph Hellwig]

On Mon, Aug 01, 2016 at 11:36:39AM +0300, Sagi Grimberg wrote:
> Under extreme conditions this might cause data corruptions. By doing that
> we we repost the buffer and then post this buffer for the device to send.
> If we happen to use shared receive queues the device might write to the
> buffer before it sends it (there is no ordering between send and recv
> queues). Without SRQs we probably won't get that if the host doesn't
> mis-behave and send more than we allowed it, but relying on that is not
> really a good idea.

Pitty - it seems so wasteful not being able to use these buffers for
anything that isn't an inline write.  I fully agree on the SRQ case,
but I think we should offer it for the non-SRP case.