sunrpc: Factor out rpc_xprt freeing

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

include/linux/sunrpc/xprt.h

@@ -281,6 +281,7 @@ void			xprt_release(struct rpc_task *task);
 struct rpc_xprt *	xprt_get(struct rpc_xprt *xprt);
 void			xprt_put(struct rpc_xprt *xprt);
 struct rpc_xprt *	xprt_alloc(int size, int max_req);
+void			xprt_free(struct rpc_xprt *);
 
 static inline __be32 *xprt_skip_transport_header(struct rpc_xprt *xprt, __be32 *p)
 {

net/sunrpc/xprt.c

@@ -984,6 +984,13 @@ out:
 }
 EXPORT_SYMBOL_GPL(xprt_alloc);
 
+void xprt_free(struct rpc_xprt *xprt)
+{
+	kfree(xprt->slot);
+	kfree(xprt);
+}
+EXPORT_SYMBOL_GPL(xprt_free);
+
 /**
  * xprt_reserve - allocate an RPC request slot
  * @task: RPC task requesting a slot allocation

net/sunrpc/xprtrdma/transport.c

@@ -251,9 +251,7 @@ xprt_rdma_destroy(struct rpc_xprt *xprt)
 
 	xprt_rdma_free_addresses(xprt);
 
-	kfree(xprt->slot);
-	xprt->slot = NULL;
-	kfree(xprt);
+	xprt_free(xprt);
 
 	dprintk("RPC:       %s: returning\n", __func__);
 
@@ -401,8 +399,7 @@ out3:
 out2:
 	rpcrdma_ia_close(&new_xprt->rx_ia);
 out1:
-	kfree(xprt->slot);
-	kfree(xprt);
+	xprt_free(xprt);
 	return ERR_PTR(rc);
 }
 

net/sunrpc/xprtsock.c

@@ -774,8 +774,7 @@ static void xs_destroy(struct rpc_xprt *xprt)
 
 	xs_close(xprt);
 	xs_free_peer_addresses(xprt);
-	kfree(xprt->slot);
-	kfree(xprt);
+	xprt_free(xprt);
 	module_put(THIS_MODULE);
 }
 
@@ -2362,8 +2361,7 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
 		return xprt;
 	ret = ERR_PTR(-EINVAL);
 out_err:
-	kfree(xprt->slot);
-	kfree(xprt);
+	xprt_free(xprt);
 	return ret;
 }
 
@@ -2438,8 +2436,7 @@ static struct rpc_xprt *xs_setup_tcp(struct xprt_create *args)
 		return xprt;
 	ret = ERR_PTR(-EINVAL);
 out_err:
-	kfree(xprt->slot);
-	kfree(xprt);
+	xprt_free(xprt);
 	return ret;
 }
 
@@ -2519,8 +2516,7 @@ static struct rpc_xprt *xs_setup_bc_tcp(struct xprt_create *args)
 		return xprt;
 	ret = ERR_PTR(-EINVAL);
 out_err:
-	kfree(xprt->slot);
-	kfree(xprt);
+	xprt_free(xprt);
 	return ret;
 }