X-Git-Url: http://ftp.safe.ca/?p=safe%2Fjmp%2Flinux-2.6;a=blobdiff_plain;f=fs%2Fnfsd%2Fnfs4callback.c;h=4788d09d9becbf3cd2549851e6101ce089553b5c;hp=3ddc9fb2e358c15de1d31a9336089f6d7dddb153;hb=e1cab5a5896e142190cd66a8287099b52e5855a7;hpb=e37da04ed145d45c2a698d7cb373a7e1191fbe86

diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 3ddc9fb..4788d09 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -358,19 +358,21 @@ static struct rpc_program cb_program = {
 		.pipe_dir_name  = "/nfsd4_cb",
 };
 
+static int max_cb_time(void)
+{
+	return max(NFSD_LEASE_TIME/10, (time_t)1) * HZ;
+}
+
 /* Reference counting, callback cleanup, etc., all look racy as heck.
  * And why is cb_set an atomic? */
 
-static int do_probe_callback(void *data)
+int setup_callback_client(struct nfs4_client *clp)
 {
-	struct nfs4_client *clp = data;
 	struct sockaddr_in	addr;
 	struct nfs4_callback    *cb = &clp->cl_callback;
 	struct rpc_timeout	timeparms = {
-		.to_initval	= (NFSD_LEASE_TIME/4) * HZ,
-		.to_retries	= 5,
-		.to_maxval	= (NFSD_LEASE_TIME/2) * HZ,
-		.to_exponential	= 1,
+		.to_initval	= max_cb_time(),
+		.to_retries	= 0,
 	};
 	struct rpc_create_args args = {
 		.protocol	= IPPROTO_TCP,
@@ -384,17 +386,10 @@ static int do_probe_callback(void *data)
 		.flags		= (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
 		.client_name    = clp->cl_principal,
 	};
-	struct rpc_message msg = {
-		.rpc_proc       = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
-		.rpc_argp       = clp,
-	};
 	struct rpc_clnt *client;
-	int status;
 
-	if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5)) {
-		status = nfserr_cb_path_down;
-		goto out_err;
-	}
+	if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
+		return -EINVAL;
 
 	/* Initialize address */
 	memset(&addr, 0, sizeof(addr));
@@ -405,27 +400,45 @@ static int do_probe_callback(void *data)
 	/* Create RPC client */
 	client = rpc_create(&args);
 	if (IS_ERR(client)) {
-		dprintk("NFSD: couldn't create callback client\n");
-		status = PTR_ERR(client);
-		goto out_err;
+		dprintk("NFSD: couldn't create callback client: %ld\n",
+			PTR_ERR(client));
+		return PTR_ERR(client);
 	}
+	cb->cb_client = client;
+	return 0;
 
-	status = rpc_call_sync(client, &msg, RPC_TASK_SOFT);
+}
+
+static int do_probe_callback(void *data)
+{
+	struct nfs4_client *clp = data;
+	struct nfs4_callback    *cb = &clp->cl_callback;
+	struct rpc_message msg = {
+		.rpc_proc       = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
+		.rpc_argp       = clp,
+	};
+	int status;
+
+	status = setup_callback_client(clp);
+	if (status)
+		goto out_err;
+
+	status = rpc_call_sync(cb->cb_client, &msg, RPC_TASK_SOFT);
 
 	if (status)
 		goto out_release_client;
 
-	cb->cb_client = client;
 	atomic_set(&cb->cb_set, 1);
 	put_nfs4_client(clp);
 	return 0;
 out_release_client:
-	rpc_shutdown_client(client);
+	rpc_shutdown_client(cb->cb_client);
+	cb->cb_client = NULL;
 out_err:
-	dprintk("NFSD: warning: no callback path to client %.*s\n",
-		(int)clp->cl_name.len, clp->cl_name.data);
+	dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
+		(int)clp->cl_name.len, clp->cl_name.data, status);
 	put_nfs4_client(clp);
-	return status;
+	return 0;
 }
 
 /*
@@ -490,9 +503,7 @@ out_put_cred:
 	 * Success or failure, now we're either waiting for lease expiration
 	 * or deleg_return.
 	 */
-	nfs4_lock_state();
 	put_nfs4_client(clp);
 	nfs4_put_delegation(dp);
-	nfs4_unlock_state();
 	return;
 }