diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/ldlm/ldlm_plain.c')
-rw-r--r-- | drivers/staging/lustre/lustre/ldlm/ldlm_plain.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_plain.c b/drivers/staging/lustre/lustre/ldlm/ldlm_plain.c new file mode 100644 index 0000000..ec29e28 --- /dev/null +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_plain.c @@ -0,0 +1,72 @@ +/* + * 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 (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2011, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + * + * lustre/ldlm/ldlm_plain.c + * + * Author: Peter Braam <braam@clusterfs.com> + * Author: Phil Schwan <phil@clusterfs.com> + */ + +/** + * This file contains implementation of PLAIN lock type. + * + * PLAIN locks are the simplest form of LDLM locking, and are used when + * there only needs to be a single lock on a resource. This avoids some + * of the complexity of EXTENT and IBITS lock types, but doesn't allow + * different "parts" of a resource to be locked concurrently. Example + * use cases for PLAIN locks include locking of MGS configuration logs + * and (as of Lustre 2.4) quota records. + */ + +#define DEBUG_SUBSYSTEM S_LDLM + +#include <lustre_dlm.h> +#include <obd_support.h> +#include <lustre_lib.h> + +#include "ldlm_internal.h" + + +void ldlm_plain_policy_wire_to_local(const ldlm_wire_policy_data_t *wpolicy, + ldlm_policy_data_t *lpolicy) +{ + /* No policy for plain locks */ +} + +void ldlm_plain_policy_local_to_wire(const ldlm_policy_data_t *lpolicy, + ldlm_wire_policy_data_t *wpolicy) +{ + /* No policy for plain locks */ +} |