requestqueue.c (75bf465f0bc33e9b776a46d6a1b9b990f5fb7c37) requestqueue.c (164d88abd7608e869b7617d5ff8893344fdda759)
1// SPDX-License-Identifier: GPL-2.0-only
2/******************************************************************************
3*******************************************************************************
4**
5** Copyright (C) 2005-2007 Red Hat, Inc. All rights reserved.
6**
7**
8*******************************************************************************

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39 log_print("dlm_add_requestqueue: out of memory len %d", length);
40 return;
41 }
42
43 e->recover_seq = ls->ls_recover_seq & 0xFFFFFFFF;
44 e->nodeid = nodeid;
45 memcpy(&e->request, ms, ms->m_header.h_length);
46
1// SPDX-License-Identifier: GPL-2.0-only
2/******************************************************************************
3*******************************************************************************
4**
5** Copyright (C) 2005-2007 Red Hat, Inc. All rights reserved.
6**
7**
8*******************************************************************************

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39 log_print("dlm_add_requestqueue: out of memory len %d", length);
40 return;
41 }
42
43 e->recover_seq = ls->ls_recover_seq & 0xFFFFFFFF;
44 e->nodeid = nodeid;
45 memcpy(&e->request, ms, ms->m_header.h_length);
46
47 atomic_inc(&ls->ls_requestqueue_cnt);
47 mutex_lock(&ls->ls_requestqueue_mutex);
48 list_add_tail(&e->list, &ls->ls_requestqueue);
49 mutex_unlock(&ls->ls_requestqueue_mutex);
50}
51
52/*
53 * Called by dlm_recoverd to process normal messages saved while recovery was
54 * happening. Normal locking has been enabled before this is called. dlm_recv

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84 ms->m_type, ms->m_header.h_nodeid,
85 ms->m_lkid, ms->m_remid, ms->m_result,
86 e->recover_seq);
87
88 dlm_receive_message_saved(ls, &e->request, e->recover_seq);
89
90 mutex_lock(&ls->ls_requestqueue_mutex);
91 list_del(&e->list);
48 mutex_lock(&ls->ls_requestqueue_mutex);
49 list_add_tail(&e->list, &ls->ls_requestqueue);
50 mutex_unlock(&ls->ls_requestqueue_mutex);
51}
52
53/*
54 * Called by dlm_recoverd to process normal messages saved while recovery was
55 * happening. Normal locking has been enabled before this is called. dlm_recv

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85 ms->m_type, ms->m_header.h_nodeid,
86 ms->m_lkid, ms->m_remid, ms->m_result,
87 e->recover_seq);
88
89 dlm_receive_message_saved(ls, &e->request, e->recover_seq);
90
91 mutex_lock(&ls->ls_requestqueue_mutex);
92 list_del(&e->list);
93 if (atomic_dec_and_test(&ls->ls_requestqueue_cnt))
94 wake_up(&ls->ls_requestqueue_wait);
92 kfree(e);
93
94 if (dlm_locking_stopped(ls)) {
95 log_debug(ls, "process_requestqueue abort running");
96 mutex_unlock(&ls->ls_requestqueue_mutex);
97 error = -EINTR;
98 break;
99 }

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110 * We want to delay dlm_recv processing new requests until dlm_recoverd has
111 * finished processing the old saved requests. We don't check for locking
112 * stopped here because dlm_ls_stop won't stop locking until it's suspended us
113 * (dlm_recv).
114 */
115
116void dlm_wait_requestqueue(struct dlm_ls *ls)
117{
95 kfree(e);
96
97 if (dlm_locking_stopped(ls)) {
98 log_debug(ls, "process_requestqueue abort running");
99 mutex_unlock(&ls->ls_requestqueue_mutex);
100 error = -EINTR;
101 break;
102 }

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113 * We want to delay dlm_recv processing new requests until dlm_recoverd has
114 * finished processing the old saved requests. We don't check for locking
115 * stopped here because dlm_ls_stop won't stop locking until it's suspended us
116 * (dlm_recv).
117 */
118
119void dlm_wait_requestqueue(struct dlm_ls *ls)
120{
118 for (;;) {
119 mutex_lock(&ls->ls_requestqueue_mutex);
120 if (list_empty(&ls->ls_requestqueue))
121 break;
122 mutex_unlock(&ls->ls_requestqueue_mutex);
123 schedule();
124 }
125 mutex_unlock(&ls->ls_requestqueue_mutex);
121 wait_event(ls->ls_requestqueue_wait,
122 atomic_read(&ls->ls_requestqueue_cnt) == 0);
126}
127
128static int purge_request(struct dlm_ls *ls, struct dlm_message *ms, int nodeid)
129{
130 uint32_t type = ms->m_type;
131
132 /* the ls is being cleaned up and freed by release_lockspace */
133 if (!ls->ls_count)

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156 struct rq_entry *e, *safe;
157
158 mutex_lock(&ls->ls_requestqueue_mutex);
159 list_for_each_entry_safe(e, safe, &ls->ls_requestqueue, list) {
160 ms = &e->request;
161
162 if (purge_request(ls, ms, e->nodeid)) {
163 list_del(&e->list);
123}
124
125static int purge_request(struct dlm_ls *ls, struct dlm_message *ms, int nodeid)
126{
127 uint32_t type = ms->m_type;
128
129 /* the ls is being cleaned up and freed by release_lockspace */
130 if (!ls->ls_count)

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153 struct rq_entry *e, *safe;
154
155 mutex_lock(&ls->ls_requestqueue_mutex);
156 list_for_each_entry_safe(e, safe, &ls->ls_requestqueue, list) {
157 ms = &e->request;
158
159 if (purge_request(ls, ms, e->nodeid)) {
160 list_del(&e->list);
161 if (atomic_dec_and_test(&ls->ls_requestqueue_cnt))
162 wake_up(&ls->ls_requestqueue_wait);
164 kfree(e);
165 }
166 }
167 mutex_unlock(&ls->ls_requestqueue_mutex);
168}
169
163 kfree(e);
164 }
165 }
166 mutex_unlock(&ls->ls_requestqueue_mutex);
167}
168