XPRTRDMA: fix client rpcrdma FRMR registration on mlx4 devices
mlx4/connectX FRMR requires local write enable together with remote rdma write enable. This fixes NFS/RDMA operation over the ConnectX Infiniband HCA in the default memreg mode. Signed-off-by: Vu Pham <vu@mellanox.com> Signed-off-by: Tom Talpey <tmtalpey@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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