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d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
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. | |
9 | * | |
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). | |
15 | * | |
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.sun.com/software/products/lustre/docs/GPLv2.pdf | |
19 | * | |
20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 | * have any questions. | |
23 | * | |
24 | * GPL HEADER END | |
25 | */ | |
26 | /* | |
27 | * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
30 | * Copyright (c) 2012, Intel Corporation. | |
31 | */ | |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | * | |
36 | * lustre/ptlrpc/llog_net.c | |
37 | * | |
38 | * OST<->MDS recovery logging infrastructure. | |
39 | * | |
40 | * Invariants in implementation: | |
41 | * - we do not share logs among different OST<->MDS connections, so that | |
42 | * if an OST or MDS fails it need only look at log(s) relevant to itself | |
43 | * | |
44 | * Author: Andreas Dilger <adilger@clusterfs.com> | |
45 | */ | |
46 | ||
47 | #define DEBUG_SUBSYSTEM S_LOG | |
48 | ||
49 | #include <linux/libcfs/libcfs.h> | |
50 | ||
51 | #include <obd_class.h> | |
52 | #include <lustre_log.h> | |
53 | #include <linux/list.h> | |
54 | #include <lvfs.h> | |
55 | #include <lustre_fsfilt.h> | |
56 | ||
57 | int llog_initiator_connect(struct llog_ctxt *ctxt) | |
58 | { | |
59 | struct obd_import *new_imp; | |
d7e09d03 PT |
60 | |
61 | LASSERT(ctxt); | |
62 | new_imp = ctxt->loc_obd->u.cli.cl_import; | |
63 | LASSERTF(ctxt->loc_imp == NULL || ctxt->loc_imp == new_imp, | |
64 | "%p - %p\n", ctxt->loc_imp, new_imp); | |
65 | mutex_lock(&ctxt->loc_mutex); | |
66 | if (ctxt->loc_imp != new_imp) { | |
67 | if (ctxt->loc_imp) | |
68 | class_import_put(ctxt->loc_imp); | |
69 | ctxt->loc_imp = class_import_get(new_imp); | |
70 | } | |
71 | mutex_unlock(&ctxt->loc_mutex); | |
0a3bdb00 | 72 | return 0; |
d7e09d03 PT |
73 | } |
74 | EXPORT_SYMBOL(llog_initiator_connect); |