1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * heartbeat.c
4 *
5 * Register ourselves with the heartbeat service, keep our node maps
6 * up to date, and fire off recovery when needed.
7 *
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
9 */
10
11 #include <linux/bitmap.h>
12 #include <linux/fs.h>
13 #include <linux/types.h>
14 #include <linux/highmem.h>
15
16 #include <cluster/masklog.h>
17
18 #include "ocfs2.h"
19
20 #include "alloc.h"
21 #include "heartbeat.h"
22 #include "inode.h"
23 #include "journal.h"
24 #include "ocfs2_trace.h"
25
26 #include "buffer_head_io.h"
27
28 /* special case -1 for now
29 * TODO: should *really* make sure the calling func never passes -1!! */
30 static void ocfs2_node_map_init(struct ocfs2_node_map *map)
31 {
32 map->num_nodes = OCFS2_NODE_MAP_MAX_NODES;
33 bitmap_zero(map->map, OCFS2_NODE_MAP_MAX_NODES);
34 }
35
36 void ocfs2_init_node_maps(struct ocfs2_super *osb)
37 {
38 spin_lock_init(&osb->node_map_lock);
39 ocfs2_node_map_init(&osb->osb_recovering_orphan_dirs);
40 }
41
42 void ocfs2_do_node_down(int node_num, void *data)
43 {
44 struct ocfs2_super *osb = data;
45
46 BUG_ON(osb->node_num == node_num);
47
48 trace_ocfs2_do_node_down(node_num);
49
50 if (!osb->cconn) {
51 /*
52 * No cluster connection means we're not even ready to
53 * participate yet. We check the slots after the cluster
54 * comes up, so we will notice the node death then. We
55 * can safely ignore it here.
56 */
57 return;
58 }
59
60 ocfs2_recovery_thread(osb, node_num);
61 }
62
63 void ocfs2_node_map_set_bit(struct ocfs2_super *osb,
64 struct ocfs2_node_map *map,
65 int bit)
66 {
67 if (bit==-1)
68 return;
69 BUG_ON(bit >= map->num_nodes);
70 spin_lock(&osb->node_map_lock);
71 set_bit(bit, map->map);
72 spin_unlock(&osb->node_map_lock);
73 }
74
75 void ocfs2_node_map_clear_bit(struct ocfs2_super *osb,
76 struct ocfs2_node_map *map,
77 int bit)
78 {
79 if (bit==-1)
80 return;
81 BUG_ON(bit >= map->num_nodes);
82 spin_lock(&osb->node_map_lock);
83 clear_bit(bit, map->map);
84 spin_unlock(&osb->node_map_lock);
85 }
86
87 int ocfs2_node_map_test_bit(struct ocfs2_super *osb,
88 struct ocfs2_node_map *map,
89 int bit)
90 {
91 int ret;
92 if (bit >= map->num_nodes) {
93 mlog(ML_ERROR, "bit=%d map->num_nodes=%d\n", bit, map->num_nodes);
94 BUG();
95 }
96 spin_lock(&osb->node_map_lock);
97 ret = test_bit(bit, map->map);
98 spin_unlock(&osb->node_map_lock);
99 return ret;
100 }
101
102
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