sunrpc: Tag rpc_xprt with net

The net is known from the xprt_create and this tagging will also
give un the context in the conntection workers where real sockets
are created.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 0637340..953206d 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -962,7 +962,7 @@
 	spin_unlock(&xprt->reserve_lock);
 }
 
-struct rpc_xprt *xprt_alloc(int size, int max_req)
+struct rpc_xprt *xprt_alloc(struct net *net, int size, int max_req)
 {
 	struct rpc_xprt *xprt;
 
@@ -975,6 +975,7 @@
 	if (xprt->slot == NULL)
 		goto out_free;
 
+	xprt->xprt_net = get_net(net);
 	return xprt;
 
 out_free:
@@ -986,6 +987,7 @@
 
 void xprt_free(struct rpc_xprt *xprt)
 {
+	put_net(xprt->xprt_net);
 	kfree(xprt->slot);
 	kfree(xprt);
 }
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index 0f7a1b9..2da32b4 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -283,7 +283,7 @@
 		return ERR_PTR(-EBADF);
 	}
 
-	xprt = xprt_alloc(sizeof(struct rpcrdma_xprt),
+	xprt = xprt_alloc(args->net, sizeof(struct rpcrdma_xprt),
 			xprt_rdma_slot_table_entries);
 	if (xprt == NULL) {
 		dprintk("RPC:       %s: couldn't allocate rpcrdma_xprt\n",
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index b1e36ec..4ef3a6a 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2272,7 +2272,7 @@
 		return ERR_PTR(-EBADF);
 	}
 
-	xprt = xprt_alloc(sizeof(*new), slot_table_size);
+	xprt = xprt_alloc(args->net, sizeof(*new), slot_table_size);
 	if (xprt == NULL) {
 		dprintk("RPC:       xs_setup_xprt: couldn't allocate "
 				"rpc_xprt\n");