Branch HEAD

[fs/lustre-release.git] / lustre / include / lustre_ucache.h

diff --git a/lustre/include/lustre_ucache.h b/lustre/include/lustre_ucache.h
index ecfdab8..1eca99d 100644 (file)
--- a/lustre/include/lustre_ucache.h
+++ b/lustre/include/lustre_ucache.h
@@ -1,5 +1,37 @@
 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
  * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
  */
 
 #ifndef _UPCALL_CACHE_H
@@ -81,6 +113,7 @@ struct upcall_cache_ops {
 struct upcall_cache {
         struct list_head        uc_hashtable[UC_CACHE_HASH_SIZE];
         spinlock_t              uc_lock;
+        rwlock_t                uc_upcall_rwlock;
 
         char                    uc_name[40];            /* for upcall */
         char                    uc_upcall[UC_CACHE_UPCALL_MAXPATH];