xprtrdma: Combine rpcrdma_mr_put and rpcrdma_mr_unmap_and_put

Clean up. There is only one remaining rpcrdma_mr_put call site, and
it can be directly replaced with unmap_and_put because mr->mr_dir is
set to DMA_NONE just before the call.

Now all the call sites do a DMA unmap, and we can just rename
mr_unmap_and_put to mr_put, which nicely matches mr_get.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c
index d7e763f..97e1804 100644 (file)
--- a/net/sunrpc/xprtrdma/frwr_ops.c
+++ b/net/sunrpc/xprtrdma/frwr_ops.c
@@ -129,7 +129,7 @@ void frwr_reset(struct rpcrdma_req *req)
        struct rpcrdma_mr *mr;
 
        while ((mr = rpcrdma_mr_pop(&req->rl_registered)))
-               rpcrdma_mr_unmap_and_put(mr);
+               rpcrdma_mr_put(mr);
 }
 
 /**
@@ -453,7 +453,7 @@ void frwr_reminv(struct rpcrdma_rep *rep, struct list_head *mrs)
                if (mr->mr_handle == rep->rr_inv_rkey) {
                        list_del_init(&mr->mr_list);
                        trace_xprtrdma_mr_remoteinv(mr);
-                       rpcrdma_mr_unmap_and_put(mr);
+                       rpcrdma_mr_put(mr);
                        break;  /* only one invalidated MR per RPC */
                }
 }
@@ -463,7 +463,7 @@ static void __frwr_release_mr(struct ib_wc *wc, struct rpcrdma_mr *mr)
        if (wc->status != IB_WC_SUCCESS)
                rpcrdma_mr_recycle(mr);
        else
-               rpcrdma_mr_unmap_and_put(mr);
+               rpcrdma_mr_put(mr);
 }
 
 /**

diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index ee6fcf1..5e0b774 100644 (file)
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -1233,34 +1233,15 @@ out_nomrs:
        return NULL;
 }
 
-static void
-__rpcrdma_mr_put(struct rpcrdma_buffer *buf, struct rpcrdma_mr *mr)
-{
-       spin_lock(&buf->rb_mrlock);
-       rpcrdma_mr_push(mr, &buf->rb_mrs);
-       spin_unlock(&buf->rb_mrlock);
-}
-
-/**
- * rpcrdma_mr_put - Release an rpcrdma_mr object
- * @mr: object to release
- *
- */
-void
-rpcrdma_mr_put(struct rpcrdma_mr *mr)
-{
-       __rpcrdma_mr_put(&mr->mr_xprt->rx_buf, mr);
-}
-
 /**
- * rpcrdma_mr_unmap_and_put - DMA unmap an MR and release it
- * @mr: object to release
+ * rpcrdma_mr_put - DMA unmap an MR and release it
+ * @mr: MR to release
  *
  */
-void
-rpcrdma_mr_unmap_and_put(struct rpcrdma_mr *mr)
+void rpcrdma_mr_put(struct rpcrdma_mr *mr)
 {
        struct rpcrdma_xprt *r_xprt = mr->mr_xprt;
+       struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
 
        if (mr->mr_dir != DMA_NONE) {
                trace_xprtrdma_mr_unmap(mr);
@@ -1268,7 +1249,10 @@ rpcrdma_mr_unmap_and_put(struct rpcrdma_mr *mr)
                                mr->mr_sg, mr->mr_nents, mr->mr_dir);
                mr->mr_dir = DMA_NONE;
        }
-       __rpcrdma_mr_put(&r_xprt->rx_buf, mr);
+
+       spin_lock(&buf->rb_mrlock);
+       rpcrdma_mr_push(mr, &buf->rb_mrs);
+       spin_unlock(&buf->rb_mrlock);
 }
 
 /**

diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 9663b8d..3e0839c 100644 (file)
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -485,7 +485,6 @@ struct rpcrdma_sendctx *rpcrdma_sendctx_get_locked(struct rpcrdma_xprt *r_xprt);
 
 struct rpcrdma_mr *rpcrdma_mr_get(struct rpcrdma_xprt *r_xprt);
 void rpcrdma_mr_put(struct rpcrdma_mr *mr);
-void rpcrdma_mr_unmap_and_put(struct rpcrdma_mr *mr);
 
 static inline void
 rpcrdma_mr_recycle(struct rpcrdma_mr *mr)