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/*
* 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.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* Implementation of cl_lock for LOVSUB layer.
*
* Author: Nikita Danilov <nikita.danilov@sun.com>
*/
#define DEBUG_SUBSYSTEM S_LOV
#include "lov_cl_internal.h"
/** \addtogroup lov
* @{
*/
/*****************************************************************************
*
* Lovsub lock operations.
*
*/
static void lovsub_lock_fini(const struct lu_env *env,
struct cl_lock_slice *slice)
{
struct lovsub_lock *lsl;
lsl = cl2lovsub_lock(slice);
kmem_cache_free(lovsub_lock_kmem, lsl);
}
static const struct cl_lock_operations lovsub_lock_ops = {
.clo_fini = lovsub_lock_fini,
};
int lovsub_lock_init(const struct lu_env *env, struct cl_object *obj,
struct cl_lock *lock, const struct cl_io *io)
{
struct lovsub_lock *lsk;
int result;
lsk = kmem_cache_zalloc(lovsub_lock_kmem, GFP_NOFS);
if (lsk) {
cl_lock_slice_add(lock, &lsk->lss_cl, obj, &lovsub_lock_ops);
result = 0;
} else {
result = -ENOMEM;
}
return result;
}
/** @} lov */
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