[PATCH 5/8] xprtrdma: Simplify rpcrdma_deregister_external() synopsis

[Chuck Lever]

Clean up: All remaining callers of rpcrdma_deregister_external()
pass NULL as the last argument, so remove that argument.

Signed-off-by: Chuck Lever <chuck.le...@oracle.com>
---

 net/sunrpc/xprtrdma/rpc_rdma.c  |    2 +-
 net/sunrpc/xprtrdma/transport.c |    2 +-
 net/sunrpc/xprtrdma/verbs.c     |    8 +-------
 net/sunrpc/xprtrdma/xprt_rdma.h |    2 +-
 4 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c
index e4af26a..aac6adb 100644
--- a/net/sunrpc/xprtrdma/rpc_rdma.c
+++ b/net/sunrpc/xprtrdma/rpc_rdma.c
@@ -273,7 +273,7 @@ rpcrdma_create_chunks(struct rpc_rqst *rqst, struct xdr_buf 
*target,
 out:
        for (pos = 0; nchunks--;)
                pos += rpcrdma_deregister_external(
-                               &req->rl_segments[pos], r_xprt, NULL);
+                               &req->rl_segments[pos], r_xprt);
        return 0;
 }
 
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index c23b0c1..430cabb 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -575,7 +575,7 @@ xprt_rdma_free(void *buffer)
        for (i = 0; req->rl_nchunks;) {
                --req->rl_nchunks;
                i += rpcrdma_deregister_external(
-                       &req->rl_segments[i], r_xprt, NULL);
+                       &req->rl_segments[i], r_xprt);
        }
 
        if (req->rl_iov.length == 0) {  /* see allocate above */
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 35c6699..2b763a2 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -1697,7 +1697,7 @@ rpcrdma_register_external(struct rpcrdma_mr_seg *seg,
 
 int
 rpcrdma_deregister_external(struct rpcrdma_mr_seg *seg,
-               struct rpcrdma_xprt *r_xprt, void *r)
+               struct rpcrdma_xprt *r_xprt)
 {
        struct rpcrdma_ia *ia = &r_xprt->rx_ia;
        int nsegs = seg->mr_nsegs, rc;
@@ -1724,12 +1724,6 @@ rpcrdma_deregister_external(struct rpcrdma_mr_seg *seg,
                rc = rpcrdma_deregister_default_external(seg, ia);
                break;
        }
-       if (r) {
-               struct rpcrdma_rep *rep = r;
-               void (*func)(struct rpcrdma_rep *) = rep->rr_func;
-               rep->rr_func = NULL;
-               func(rep);      /* dereg done, callback now */
-       }
        return nsegs;
 }
 
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index bf08ee0..3f44d6a 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -331,7 +331,7 @@ int rpcrdma_deregister_internal(struct rpcrdma_ia *,
 int rpcrdma_register_external(struct rpcrdma_mr_seg *,
                                int, int, struct rpcrdma_xprt *);
 int rpcrdma_deregister_external(struct rpcrdma_mr_seg *,
-                               struct rpcrdma_xprt *, void *);
+                               struct rpcrdma_xprt *);
 
 /*
  * RPC/RDMA connection management calls - xprtrdma/rpc_rdma.c

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