Re: [PATCH RFC 1/3] IB/core: Expose a device attribute for rdma_read access flags

[Sagi Grimberg <sagig-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>]

On 11/11/2015 10:08, Christoph Hellwig wrote:
> On Tue, Nov 10, 2015 at 11:01:56AM -0700, Jason Gunthorpe wrote:
>> No need to change every driver.
>>
>> I'd suggest something like
>>
>>    unsigned int rdma_cap_rdma_read_mr_flags(const struct ib_pd *pd)
>>    {
>>       if (rdma_protocol_iwarp(pd->device, rdma_start_port(pd->device)))
>>             return IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE;
>>       return IB_ACCESS_LOCAL_WRITE;
>>    }
>
> Yes, this looks good!

It does, but it doesn't look like something we'd want to check for each
IO...
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