svcrdma: Fence LOCAL_INV work requests

Fencing forces the invalidate to only happen after all prior send
work requests have been completed.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Reported by : Devesh Sharma <Devesh.Sharma@Emulex.Com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
index 52d9f2ce20b0..8f92a61ee2df 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
@@ -338,7 +338,7 @@ static int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt,
                 memset(&inv_wr, 0, sizeof(inv_wr));
                 inv_wr.wr_id = (unsigned long)ctxt;
                 inv_wr.opcode = IB_WR_LOCAL_INV;
-                inv_wr.send_flags = IB_SEND_SIGNALED;
+                inv_wr.send_flags = IB_SEND_SIGNALED | IB_SEND_FENCE;
                 inv_wr.ex.invalidate_rkey = frmr->mr->lkey;
         }
         ctxt->wr_op = read_wr.opcode;