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Commit 68743082 authored by Vu Pham's avatar Vu Pham Committed by Trond Myklebust
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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: default avatarVu Pham <vu@mellanox.com>
Signed-off-by: default avatarTom Talpey <tmtalpey@gmail.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent b18f1e21

net/sunrpc/xprtrdma/verbs.c

+2 −1
Original line number Diff line number Diff line
@@ -1495,7 +1495,8 @@ rpcrdma_register_frmr_external(struct rpcrdma_mr_seg *seg, 
	frmr_wr.wr.fast_reg.page_shift = PAGE_SHIFT;

	frmr_wr.wr.fast_reg.length = i << PAGE_SHIFT;

	frmr_wr.wr.fast_reg.access_flags = (writing ?

				IB_ACCESS_REMOTE_WRITE : IB_ACCESS_REMOTE_READ);

				IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE :

				IB_ACCESS_REMOTE_READ);

	frmr_wr.wr.fast_reg.rkey = seg1->mr_chunk.rl_mw->r.frmr.fr_mr->rkey;

	DECR_CQCOUNT(&r_xprt->rx_ep);