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1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
8 */
9
10#include <linux/slab.h>
11#include <linux/spinlock.h>
12#include <linux/completion.h>
13#include <linux/buffer_head.h>
14#include <linux/module.h>
15#include <linux/init.h>
16#include <linux/gfs2_ondisk.h>
17#include <linux/rcupdate.h>
18#include <linux/rculist_bl.h>
19#include <linux/atomic.h>
20
21#include "gfs2.h"
22#include "incore.h"
23#include "super.h"
24#include "sys.h"
25#include "util.h"
26#include "glock.h"
27#include "quota.h"
28#include "recovery.h"
29#include "dir.h"
30
31static struct shrinker qd_shrinker = {
32 .shrink = gfs2_shrink_qd_memory,
33 .seeks = DEFAULT_SEEKS,
34};
35
36static void gfs2_init_inode_once(void *foo)
37{
38 struct gfs2_inode *ip = foo;
39
40 inode_init_once(&ip->i_inode);
41 init_rwsem(&ip->i_rw_mutex);
42 INIT_LIST_HEAD(&ip->i_trunc_list);
43 ip->i_alloc = NULL;
44 ip->i_hash_cache = NULL;
45}
46
47static void gfs2_init_glock_once(void *foo)
48{
49 struct gfs2_glock *gl = foo;
50
51 INIT_HLIST_BL_NODE(&gl->gl_list);
52 spin_lock_init(&gl->gl_spin);
53 INIT_LIST_HEAD(&gl->gl_holders);
54 INIT_LIST_HEAD(&gl->gl_lru);
55 INIT_LIST_HEAD(&gl->gl_ail_list);
56 atomic_set(&gl->gl_ail_count, 0);
57 atomic_set(&gl->gl_revokes, 0);
58}
59
60static void gfs2_init_gl_aspace_once(void *foo)
61{
62 struct gfs2_glock *gl = foo;
63 struct address_space *mapping = (struct address_space *)(gl + 1);
64
65 gfs2_init_glock_once(gl);
66 address_space_init_once(mapping);
67}
68
69/**
70 * init_gfs2_fs - Register GFS2 as a filesystem
71 *
72 * Returns: 0 on success, error code on failure
73 */
74
75static int __init init_gfs2_fs(void)
76{
77 int error;
78
79 gfs2_str2qstr(&gfs2_qdot, ".");
80 gfs2_str2qstr(&gfs2_qdotdot, "..");
81
82 error = gfs2_sys_init();
83 if (error)
84 return error;
85
86 error = gfs2_glock_init();
87 if (error)
88 goto fail;
89
90 error = -ENOMEM;
91 gfs2_glock_cachep = kmem_cache_create("gfs2_glock",
92 sizeof(struct gfs2_glock),
93 0, 0,
94 gfs2_init_glock_once);
95 if (!gfs2_glock_cachep)
96 goto fail;
97
98 gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)",
99 sizeof(struct gfs2_glock) +
100 sizeof(struct address_space),
101 0, 0, gfs2_init_gl_aspace_once);
102
103 if (!gfs2_glock_aspace_cachep)
104 goto fail;
105
106 gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
107 sizeof(struct gfs2_inode),
108 0, SLAB_RECLAIM_ACCOUNT|
109 SLAB_MEM_SPREAD,
110 gfs2_init_inode_once);
111 if (!gfs2_inode_cachep)
112 goto fail;
113
114 gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata",
115 sizeof(struct gfs2_bufdata),
116 0, 0, NULL);
117 if (!gfs2_bufdata_cachep)
118 goto fail;
119
120 gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd",
121 sizeof(struct gfs2_rgrpd),
122 0, 0, NULL);
123 if (!gfs2_rgrpd_cachep)
124 goto fail;
125
126 gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad",
127 sizeof(struct gfs2_quota_data),
128 0, 0, NULL);
129 if (!gfs2_quotad_cachep)
130 goto fail;
131
132 register_shrinker(&qd_shrinker);
133
134 error = register_filesystem(&gfs2_fs_type);
135 if (error)
136 goto fail;
137
138 error = register_filesystem(&gfs2meta_fs_type);
139 if (error)
140 goto fail_unregister;
141
142 error = -ENOMEM;
143 gfs_recovery_wq = alloc_workqueue("gfs_recovery",
144 WQ_MEM_RECLAIM | WQ_FREEZABLE, 0);
145 if (!gfs_recovery_wq)
146 goto fail_wq;
147
148 gfs2_register_debugfs();
149
150 printk("GFS2 installed\n");
151
152 return 0;
153
154fail_wq:
155 unregister_filesystem(&gfs2meta_fs_type);
156fail_unregister:
157 unregister_filesystem(&gfs2_fs_type);
158fail:
159 unregister_shrinker(&qd_shrinker);
160 gfs2_glock_exit();
161
162 if (gfs2_quotad_cachep)
163 kmem_cache_destroy(gfs2_quotad_cachep);
164
165 if (gfs2_rgrpd_cachep)
166 kmem_cache_destroy(gfs2_rgrpd_cachep);
167
168 if (gfs2_bufdata_cachep)
169 kmem_cache_destroy(gfs2_bufdata_cachep);
170
171 if (gfs2_inode_cachep)
172 kmem_cache_destroy(gfs2_inode_cachep);
173
174 if (gfs2_glock_aspace_cachep)
175 kmem_cache_destroy(gfs2_glock_aspace_cachep);
176
177 if (gfs2_glock_cachep)
178 kmem_cache_destroy(gfs2_glock_cachep);
179
180 gfs2_sys_uninit();
181 return error;
182}
183
184/**
185 * exit_gfs2_fs - Unregister the file system
186 *
187 */
188
189static void __exit exit_gfs2_fs(void)
190{
191 unregister_shrinker(&qd_shrinker);
192 gfs2_glock_exit();
193 gfs2_unregister_debugfs();
194 unregister_filesystem(&gfs2_fs_type);
195 unregister_filesystem(&gfs2meta_fs_type);
196 destroy_workqueue(gfs_recovery_wq);
197
198 rcu_barrier();
199
200 kmem_cache_destroy(gfs2_quotad_cachep);
201 kmem_cache_destroy(gfs2_rgrpd_cachep);
202 kmem_cache_destroy(gfs2_bufdata_cachep);
203 kmem_cache_destroy(gfs2_inode_cachep);
204 kmem_cache_destroy(gfs2_glock_aspace_cachep);
205 kmem_cache_destroy(gfs2_glock_cachep);
206
207 gfs2_sys_uninit();
208}
209
210MODULE_DESCRIPTION("Global File System");
211MODULE_AUTHOR("Red Hat, Inc.");
212MODULE_LICENSE("GPL");
213
214module_init(init_gfs2_fs);
215module_exit(exit_gfs2_fs);
216
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 */
6
7#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8
9#include <linux/slab.h>
10#include <linux/spinlock.h>
11#include <linux/completion.h>
12#include <linux/buffer_head.h>
13#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/gfs2_ondisk.h>
16#include <linux/rcupdate.h>
17#include <linux/rculist_bl.h>
18#include <linux/atomic.h>
19#include <linux/mempool.h>
20
21#include "gfs2.h"
22#include "incore.h"
23#include "super.h"
24#include "sys.h"
25#include "util.h"
26#include "glock.h"
27#include "quota.h"
28#include "recovery.h"
29#include "dir.h"
30#include "glops.h"
31
32struct workqueue_struct *gfs2_control_wq;
33
34static void gfs2_init_inode_once(void *foo)
35{
36 struct gfs2_inode *ip = foo;
37
38 inode_init_once(&ip->i_inode);
39 atomic_set(&ip->i_sizehint, 0);
40 init_rwsem(&ip->i_rw_mutex);
41 INIT_LIST_HEAD(&ip->i_ordered);
42 ip->i_qadata = NULL;
43 gfs2_holder_mark_uninitialized(&ip->i_rgd_gh);
44 memset(&ip->i_res, 0, sizeof(ip->i_res));
45 RB_CLEAR_NODE(&ip->i_res.rs_node);
46 ip->i_hash_cache = NULL;
47 gfs2_holder_mark_uninitialized(&ip->i_iopen_gh);
48}
49
50static void gfs2_init_glock_once(void *foo)
51{
52 struct gfs2_glock *gl = foo;
53
54 spin_lock_init(&gl->gl_lockref.lock);
55 INIT_LIST_HEAD(&gl->gl_holders);
56 INIT_LIST_HEAD(&gl->gl_lru);
57 INIT_LIST_HEAD(&gl->gl_ail_list);
58 atomic_set(&gl->gl_ail_count, 0);
59 atomic_set(&gl->gl_revokes, 0);
60}
61
62static void gfs2_init_gl_aspace_once(void *foo)
63{
64 struct gfs2_glock_aspace *gla = foo;
65
66 gfs2_init_glock_once(&gla->glock);
67 address_space_init_once(&gla->mapping);
68}
69
70/**
71 * init_gfs2_fs - Register GFS2 as a filesystem
72 *
73 * Returns: 0 on success, error code on failure
74 */
75
76static int __init init_gfs2_fs(void)
77{
78 int error;
79
80 gfs2_str2qstr(&gfs2_qdot, ".");
81 gfs2_str2qstr(&gfs2_qdotdot, "..");
82 gfs2_quota_hash_init();
83
84 error = gfs2_sys_init();
85 if (error)
86 return error;
87
88 error = list_lru_init(&gfs2_qd_lru);
89 if (error)
90 goto fail_lru;
91
92 error = gfs2_glock_init();
93 if (error)
94 goto fail_glock;
95
96 error = -ENOMEM;
97 gfs2_glock_cachep = kmem_cache_create("gfs2_glock",
98 sizeof(struct gfs2_glock),
99 0, SLAB_RECLAIM_ACCOUNT,
100 gfs2_init_glock_once);
101 if (!gfs2_glock_cachep)
102 goto fail_cachep1;
103
104 gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)",
105 sizeof(struct gfs2_glock_aspace),
106 0, 0, gfs2_init_gl_aspace_once);
107
108 if (!gfs2_glock_aspace_cachep)
109 goto fail_cachep2;
110
111 gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
112 sizeof(struct gfs2_inode),
113 0, SLAB_RECLAIM_ACCOUNT|
114 SLAB_MEM_SPREAD|
115 SLAB_ACCOUNT,
116 gfs2_init_inode_once);
117 if (!gfs2_inode_cachep)
118 goto fail_cachep3;
119
120 gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata",
121 sizeof(struct gfs2_bufdata),
122 0, 0, NULL);
123 if (!gfs2_bufdata_cachep)
124 goto fail_cachep4;
125
126 gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd",
127 sizeof(struct gfs2_rgrpd),
128 0, 0, NULL);
129 if (!gfs2_rgrpd_cachep)
130 goto fail_cachep5;
131
132 gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad",
133 sizeof(struct gfs2_quota_data),
134 0, SLAB_RECLAIM_ACCOUNT, NULL);
135 if (!gfs2_quotad_cachep)
136 goto fail_cachep6;
137
138 gfs2_qadata_cachep = kmem_cache_create("gfs2_qadata",
139 sizeof(struct gfs2_qadata),
140 0, 0, NULL);
141 if (!gfs2_qadata_cachep)
142 goto fail_cachep7;
143
144 gfs2_trans_cachep = kmem_cache_create("gfs2_trans",
145 sizeof(struct gfs2_trans),
146 0, 0, NULL);
147 if (!gfs2_trans_cachep)
148 goto fail_cachep8;
149
150 error = register_shrinker(&gfs2_qd_shrinker, "gfs2-qd");
151 if (error)
152 goto fail_shrinker;
153
154 error = -ENOMEM;
155 gfs_recovery_wq = alloc_workqueue("gfs_recovery",
156 WQ_MEM_RECLAIM | WQ_FREEZABLE, 0);
157 if (!gfs_recovery_wq)
158 goto fail_wq1;
159
160 gfs2_control_wq = alloc_workqueue("gfs2_control",
161 WQ_UNBOUND | WQ_FREEZABLE, 0);
162 if (!gfs2_control_wq)
163 goto fail_wq2;
164
165 gfs2_freeze_wq = alloc_workqueue("freeze_workqueue", 0, 0);
166
167 if (!gfs2_freeze_wq)
168 goto fail_wq3;
169
170 gfs2_page_pool = mempool_create_page_pool(64, 0);
171 if (!gfs2_page_pool)
172 goto fail_mempool;
173
174 gfs2_register_debugfs();
175 error = register_filesystem(&gfs2_fs_type);
176 if (error)
177 goto fail_fs1;
178
179 error = register_filesystem(&gfs2meta_fs_type);
180 if (error)
181 goto fail_fs2;
182
183
184 pr_info("GFS2 installed\n");
185
186 return 0;
187
188fail_fs2:
189 unregister_filesystem(&gfs2_fs_type);
190fail_fs1:
191 mempool_destroy(gfs2_page_pool);
192fail_mempool:
193 destroy_workqueue(gfs2_freeze_wq);
194fail_wq3:
195 destroy_workqueue(gfs2_control_wq);
196fail_wq2:
197 destroy_workqueue(gfs_recovery_wq);
198fail_wq1:
199 unregister_shrinker(&gfs2_qd_shrinker);
200fail_shrinker:
201 kmem_cache_destroy(gfs2_trans_cachep);
202fail_cachep8:
203 kmem_cache_destroy(gfs2_qadata_cachep);
204fail_cachep7:
205 kmem_cache_destroy(gfs2_quotad_cachep);
206fail_cachep6:
207 kmem_cache_destroy(gfs2_rgrpd_cachep);
208fail_cachep5:
209 kmem_cache_destroy(gfs2_bufdata_cachep);
210fail_cachep4:
211 kmem_cache_destroy(gfs2_inode_cachep);
212fail_cachep3:
213 kmem_cache_destroy(gfs2_glock_aspace_cachep);
214fail_cachep2:
215 kmem_cache_destroy(gfs2_glock_cachep);
216fail_cachep1:
217 gfs2_glock_exit();
218fail_glock:
219 list_lru_destroy(&gfs2_qd_lru);
220fail_lru:
221 gfs2_sys_uninit();
222 return error;
223}
224
225/**
226 * exit_gfs2_fs - Unregister the file system
227 *
228 */
229
230static void __exit exit_gfs2_fs(void)
231{
232 unregister_shrinker(&gfs2_qd_shrinker);
233 gfs2_glock_exit();
234 gfs2_unregister_debugfs();
235 unregister_filesystem(&gfs2_fs_type);
236 unregister_filesystem(&gfs2meta_fs_type);
237 destroy_workqueue(gfs_recovery_wq);
238 destroy_workqueue(gfs2_control_wq);
239 destroy_workqueue(gfs2_freeze_wq);
240 list_lru_destroy(&gfs2_qd_lru);
241
242 rcu_barrier();
243
244 mempool_destroy(gfs2_page_pool);
245 kmem_cache_destroy(gfs2_trans_cachep);
246 kmem_cache_destroy(gfs2_qadata_cachep);
247 kmem_cache_destroy(gfs2_quotad_cachep);
248 kmem_cache_destroy(gfs2_rgrpd_cachep);
249 kmem_cache_destroy(gfs2_bufdata_cachep);
250 kmem_cache_destroy(gfs2_inode_cachep);
251 kmem_cache_destroy(gfs2_glock_aspace_cachep);
252 kmem_cache_destroy(gfs2_glock_cachep);
253
254 gfs2_sys_uninit();
255}
256
257MODULE_DESCRIPTION("Global File System");
258MODULE_AUTHOR("Red Hat, Inc.");
259MODULE_LICENSE("GPL");
260
261module_init(init_gfs2_fs);
262module_exit(exit_gfs2_fs);
263