4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2013, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/ptlrpc/llog_net.c
34 * OST<->MDS recovery logging infrastructure.
36 * Invariants in implementation:
37 * - we do not share logs among different OST<->MDS connections, so that
38 * if an OST or MDS fails it need only look at log(s) relevant to itself
40 * Author: Andreas Dilger <adilger@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_LOG
45 #include <libcfs/libcfs.h>
46 #include <obd_class.h>
47 #include <lustre_log.h>
49 int llog_initiator_connect(struct llog_ctxt *ctxt)
51 struct obd_import *new_imp;
56 new_imp = ctxt->loc_obd->u.cli.cl_import;
57 LASSERTF(!ctxt->loc_imp || ctxt->loc_imp == new_imp,
58 "%p - %p\n", ctxt->loc_imp, new_imp);
59 mutex_lock(&ctxt->loc_mutex);
60 if (ctxt->loc_imp != new_imp) {
62 class_import_put(ctxt->loc_imp);
63 ctxt->loc_imp = class_import_get(new_imp);
65 mutex_unlock(&ctxt->loc_mutex);
68 EXPORT_SYMBOL(llog_initiator_connect);