[ewg] [GIT PULL ofed-1.4.1] xprtrdma: The frmr iova_start values are truncated by the nfs rdma client.

[Vu Pham]

Steve,

You should have the same fix for the server side as well
Here is the patch

-vu

>
>
>
> A bad cast causes the iova_start, which in this case is a DMA bus 
> address,
> to be truncated on 32b systems.  No cast is needed.
>
> Signed-off-by: Steve Wise <swise at opengridcomputing.com>
> ---
>
> net/sunrpc/xprtrdma/verbs.c |    2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
> index 3b21e0c..3a374f5 100644
> --- a/net/sunrpc/xprtrdma/verbs.c
> +++ b/net/sunrpc/xprtrdma/verbs.c
> @@ -1489,7 +1489,7 @@ rpcrdma_register_frmr_external(struct 
> rpcrdma_mr_seg *seg,
>     memset(&frmr_wr, 0, sizeof frmr_wr);
>     frmr_wr.opcode = IB_WR_FAST_REG_MR;
>     frmr_wr.send_flags = 0;            /* unsignaled */
> -    frmr_wr.wr.fast_reg.iova_start = (unsigned long)seg1->mr_dma;
> +    frmr_wr.wr.fast_reg.iova_start = seg1->mr_dma;
>     frmr_wr.wr.fast_reg.page_list = seg1->mr_chunk.rl_mw->r.frmr.fr_pgl;
>     frmr_wr.wr.fast_reg.page_list_len = i;
>     frmr_wr.wr.fast_reg.page_shift = PAGE_SHIFT;
>
>
>
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