Re: [PATCH 11/12] IB/core: add RW API support for signature MRs

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On Tue, Apr 19, 2016 at 05:20:09PM +0300, Sagi Grimberg wrote:

> In isert if the we have a single sg entry, we use the local_dma_lkey
> just so we can skip a registration (also for protection sg), perhaps
> rdma_rw_init_one_mr can do this optimization too?

Can't more than a single SG can be packed into a WR? Ideally this
common code should try and max out the SG entries before falling back
to using a WR?

There is probably an interesting performance trade off around making
the WR SG list bigger vs using the MR.

But that could be done as a follow up patch... This series is a big,
big improvement already.

Jason
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