Re: [PATCH v3 04/15] xprtrdma: Don't fall back to PHYSICAL memory registration

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On Mon, Jul 20, 2015 at 03:03:02PM -0400, Chuck Lever wrote:
> PHYSICAL memory registration uses a single rkey for all of the
> client's memory, thus is insecure. It is still useful in some cases
> for testing.
> 
> Retain the ability to select PHYSICAL memory registration capability
> via /proc/sys/sunrpc/rdma_memreg_strategy, but don't fall back to it
> if the HCA does not support FRWR or FMR.
> 
> This means amso1100 no longer works out of the box with NFS/RDMA.
> When using amso1100 HCAs, set the memreg_strategy sysctl to 6 before
> performing NFS/RDMA mounts.

Looks good,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>
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