[PATCH] lockdep: annotate nfs/nfsd in-kernel sockets

[h-e-n] / net / sunrpc / xprtsock.c

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index cfe3c15..2fc4a31 100644 (file)
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1058,6 +1058,35 @@ static int xs_bindresvport(struct rpc_xprt *xprt, struct socket *sock)
        return err;
 }
 
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+static struct lock_class_key xs_key[2];
+static struct lock_class_key xs_slock_key[2];
+
+static inline void xs_reclassify_socket(struct socket *sock)
+{
+       struct sock *sk = sock->sk;
+       BUG_ON(sk->sk_lock.owner != NULL);
+       switch (sk->sk_family) {
+       case AF_INET:
+               sock_lock_init_class_and_name(sk, "slock-AF_INET-NFS",
+                       &xs_slock_key[0], "sk_lock-AF_INET-NFS", &xs_key[0]);
+               break;
+
+       case AF_INET6:
+               sock_lock_init_class_and_name(sk, "slock-AF_INET6-NFS",
+                       &xs_slock_key[1], "sk_lock-AF_INET6-NFS", &xs_key[1]);
+               break;
+
+       default:
+               BUG();
+       }
+}
+#else
+static inline void xs_reclassify_socket(struct socket *sock)
+{
+}
+#endif
+
 /**
  * xs_udp_connect_worker - set up a UDP socket
  * @work: RPC transport to connect
@@ -1081,6 +1110,7 @@ static void xs_udp_connect_worker(struct work_struct *work)
                dprintk("RPC:      can't create UDP transport socket (%d).\n", -err);
                goto out;
        }
+       xs_reclassify_socket(sock);
 
        if (xprt->resvport && xs_bindresvport(xprt, sock) < 0) {
                sock_release(sock);
@@ -1165,6 +1195,7 @@ static void xs_tcp_connect_worker(struct work_struct *work)
                        dprintk("RPC:      can't create TCP transport socket (%d).\n", -err);
                        goto out;
                }
+               xs_reclassify_socket(sock);
 
                if (xprt->resvport && xs_bindresvport(xprt, sock) < 0) {
                        sock_release(sock);