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Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
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 | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
d77d1b58 JP |
10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
11 | ||
b3b94faa DT |
12 | #include <linux/slab.h> |
13 | #include <linux/spinlock.h> | |
14 | #include <linux/completion.h> | |
15 | #include <linux/buffer_head.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/init.h> | |
5c676f6d | 18 | #include <linux/gfs2_ondisk.h> |
bc015cb8 SW |
19 | #include <linux/rcupdate.h> |
20 | #include <linux/rculist_bl.h> | |
60063497 | 21 | #include <linux/atomic.h> |
75ca61c1 | 22 | #include <linux/mempool.h> |
b3b94faa DT |
23 | |
24 | #include "gfs2.h" | |
5c676f6d | 25 | #include "incore.h" |
b2760583 | 26 | #include "super.h" |
b3b94faa | 27 | #include "sys.h" |
5c676f6d | 28 | #include "util.h" |
85d1da67 | 29 | #include "glock.h" |
0a7ab79c | 30 | #include "quota.h" |
6ecd7c2d | 31 | #include "recovery.h" |
8d123585 | 32 | #include "dir.h" |
2e60d768 | 33 | #include "glops.h" |
0a7ab79c | 34 | |
e0c2a9aa DT |
35 | struct workqueue_struct *gfs2_control_wq; |
36 | ||
51cc5068 | 37 | static void gfs2_init_inode_once(void *foo) |
320dd101 SW |
38 | { |
39 | struct gfs2_inode *ip = foo; | |
a35afb83 CL |
40 | |
41 | inode_init_once(&ip->i_inode); | |
a35afb83 | 42 | init_rwsem(&ip->i_rw_mutex); |
813e0c46 | 43 | INIT_LIST_HEAD(&ip->i_trunc_list); |
564e12b1 | 44 | ip->i_res = NULL; |
17d539f0 | 45 | ip->i_hash_cache = NULL; |
320dd101 SW |
46 | } |
47 | ||
51cc5068 | 48 | static void gfs2_init_glock_once(void *foo) |
ec45d9f5 SW |
49 | { |
50 | struct gfs2_glock *gl = foo; | |
a35afb83 | 51 | |
bc015cb8 | 52 | INIT_HLIST_BL_NODE(&gl->gl_list); |
a35afb83 CL |
53 | spin_lock_init(&gl->gl_spin); |
54 | INIT_LIST_HEAD(&gl->gl_holders); | |
97cc1025 | 55 | INIT_LIST_HEAD(&gl->gl_lru); |
a35afb83 CL |
56 | INIT_LIST_HEAD(&gl->gl_ail_list); |
57 | atomic_set(&gl->gl_ail_count, 0); | |
f42ab085 | 58 | atomic_set(&gl->gl_revokes, 0); |
ec45d9f5 SW |
59 | } |
60 | ||
009d8518 SW |
61 | static void gfs2_init_gl_aspace_once(void *foo) |
62 | { | |
63 | struct gfs2_glock *gl = foo; | |
64 | struct address_space *mapping = (struct address_space *)(gl + 1); | |
65 | ||
66 | gfs2_init_glock_once(gl); | |
2aa15890 | 67 | address_space_init_once(mapping); |
009d8518 SW |
68 | } |
69 | ||
b3b94faa DT |
70 | /** |
71 | * init_gfs2_fs - Register GFS2 as a filesystem | |
72 | * | |
73 | * Returns: 0 on success, error code on failure | |
74 | */ | |
75 | ||
76 | static int __init init_gfs2_fs(void) | |
77 | { | |
78 | int error; | |
79 | ||
8d123585 SW |
80 | gfs2_str2qstr(&gfs2_qdot, "."); |
81 | gfs2_str2qstr(&gfs2_qdotdot, ".."); | |
c754fbbb | 82 | gfs2_quota_hash_init(); |
8d123585 | 83 | |
b3b94faa DT |
84 | error = gfs2_sys_init(); |
85 | if (error) | |
86 | return error; | |
87 | ||
2147dbfd SW |
88 | error = list_lru_init(&gfs2_qd_lru); |
89 | if (error) | |
90 | goto fail_lru; | |
91 | ||
85d1da67 SW |
92 | error = gfs2_glock_init(); |
93 | if (error) | |
94 | goto fail; | |
b3b94faa | 95 | |
85d1da67 | 96 | error = -ENOMEM; |
b3b94faa DT |
97 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
98 | sizeof(struct gfs2_glock), | |
907b9bce | 99 | 0, 0, |
20c2df83 | 100 | gfs2_init_glock_once); |
b3b94faa DT |
101 | if (!gfs2_glock_cachep) |
102 | goto fail; | |
103 | ||
7c9a84a5 | 104 | gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)", |
009d8518 SW |
105 | sizeof(struct gfs2_glock) + |
106 | sizeof(struct address_space), | |
107 | 0, 0, gfs2_init_gl_aspace_once); | |
108 | ||
109 | if (!gfs2_glock_aspace_cachep) | |
110 | goto fail; | |
111 | ||
b3b94faa DT |
112 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", |
113 | sizeof(struct gfs2_inode), | |
eb1dc33a AD |
114 | 0, SLAB_RECLAIM_ACCOUNT| |
115 | SLAB_MEM_SPREAD, | |
20c2df83 | 116 | gfs2_init_inode_once); |
b3b94faa DT |
117 | if (!gfs2_inode_cachep) |
118 | goto fail; | |
119 | ||
120 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
121 | sizeof(struct gfs2_bufdata), | |
20c2df83 | 122 | 0, 0, NULL); |
b3b94faa DT |
123 | if (!gfs2_bufdata_cachep) |
124 | goto fail; | |
125 | ||
6bdd9be6 BP |
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; | |
131 | ||
37b2c837 SW |
132 | gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad", |
133 | sizeof(struct gfs2_quota_data), | |
134 | 0, 0, NULL); | |
135 | if (!gfs2_quotad_cachep) | |
136 | goto fail; | |
137 | ||
36f5580b BP |
138 | gfs2_rsrv_cachep = kmem_cache_create("gfs2_mblk", |
139 | sizeof(struct gfs2_blkreserv), | |
140 | 0, 0, NULL); | |
141 | if (!gfs2_rsrv_cachep) | |
142 | goto fail; | |
143 | ||
2147dbfd | 144 | register_shrinker(&gfs2_qd_shrinker); |
0a7ab79c | 145 | |
b3b94faa DT |
146 | error = register_filesystem(&gfs2_fs_type); |
147 | if (error) | |
148 | goto fail; | |
149 | ||
419c93e0 SW |
150 | error = register_filesystem(&gfs2meta_fs_type); |
151 | if (error) | |
152 | goto fail_unregister; | |
153 | ||
6ecd7c2d TH |
154 | error = -ENOMEM; |
155 | gfs_recovery_wq = alloc_workqueue("gfs_recovery", | |
58a69cb4 | 156 | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0); |
6ecd7c2d TH |
157 | if (!gfs_recovery_wq) |
158 | goto fail_wq; | |
fe64d517 | 159 | |
e0c2a9aa | 160 | gfs2_control_wq = alloc_workqueue("gfs2_control", |
d08fa65a | 161 | WQ_UNBOUND | WQ_FREEZABLE, 0); |
e0c2a9aa | 162 | if (!gfs2_control_wq) |
75ca61c1 SW |
163 | goto fail_recovery; |
164 | ||
2e60d768 BM |
165 | gfs2_freeze_wq = alloc_workqueue("freeze_workqueue", 0, 0); |
166 | ||
167 | if (!gfs2_freeze_wq) | |
168 | goto fail_control; | |
169 | ||
e8c92ed7 SW |
170 | gfs2_page_pool = mempool_create_page_pool(64, 0); |
171 | if (!gfs2_page_pool) | |
2e60d768 | 172 | goto fail_freeze; |
e0c2a9aa | 173 | |
7c52b166 RP |
174 | gfs2_register_debugfs(); |
175 | ||
fc554ed3 | 176 | pr_info("GFS2 installed\n"); |
b3b94faa DT |
177 | |
178 | return 0; | |
179 | ||
2e60d768 BM |
180 | fail_freeze: |
181 | destroy_workqueue(gfs2_freeze_wq); | |
e0c2a9aa | 182 | fail_control: |
75ca61c1 SW |
183 | destroy_workqueue(gfs2_control_wq); |
184 | fail_recovery: | |
e0c2a9aa | 185 | destroy_workqueue(gfs_recovery_wq); |
6ecd7c2d | 186 | fail_wq: |
fe64d517 | 187 | unregister_filesystem(&gfs2meta_fs_type); |
419c93e0 SW |
188 | fail_unregister: |
189 | unregister_filesystem(&gfs2_fs_type); | |
190 | fail: | |
2147dbfd SW |
191 | list_lru_destroy(&gfs2_qd_lru); |
192 | fail_lru: | |
193 | unregister_shrinker(&gfs2_qd_shrinker); | |
8fbbfd21 SW |
194 | gfs2_glock_exit(); |
195 | ||
36f5580b BP |
196 | if (gfs2_rsrv_cachep) |
197 | kmem_cache_destroy(gfs2_rsrv_cachep); | |
198 | ||
37b2c837 SW |
199 | if (gfs2_quotad_cachep) |
200 | kmem_cache_destroy(gfs2_quotad_cachep); | |
201 | ||
6bdd9be6 BP |
202 | if (gfs2_rgrpd_cachep) |
203 | kmem_cache_destroy(gfs2_rgrpd_cachep); | |
204 | ||
b3b94faa DT |
205 | if (gfs2_bufdata_cachep) |
206 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
207 | ||
208 | if (gfs2_inode_cachep) | |
209 | kmem_cache_destroy(gfs2_inode_cachep); | |
210 | ||
009d8518 SW |
211 | if (gfs2_glock_aspace_cachep) |
212 | kmem_cache_destroy(gfs2_glock_aspace_cachep); | |
213 | ||
b3b94faa DT |
214 | if (gfs2_glock_cachep) |
215 | kmem_cache_destroy(gfs2_glock_cachep); | |
216 | ||
217 | gfs2_sys_uninit(); | |
218 | return error; | |
219 | } | |
220 | ||
221 | /** | |
222 | * exit_gfs2_fs - Unregister the file system | |
223 | * | |
224 | */ | |
225 | ||
226 | static void __exit exit_gfs2_fs(void) | |
227 | { | |
2147dbfd | 228 | unregister_shrinker(&gfs2_qd_shrinker); |
8fbbfd21 | 229 | gfs2_glock_exit(); |
7c52b166 | 230 | gfs2_unregister_debugfs(); |
b3b94faa | 231 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 232 | unregister_filesystem(&gfs2meta_fs_type); |
6ecd7c2d | 233 | destroy_workqueue(gfs_recovery_wq); |
e0c2a9aa | 234 | destroy_workqueue(gfs2_control_wq); |
2e60d768 | 235 | destroy_workqueue(gfs2_freeze_wq); |
2147dbfd | 236 | list_lru_destroy(&gfs2_qd_lru); |
b3b94faa | 237 | |
bc015cb8 SW |
238 | rcu_barrier(); |
239 | ||
e8c92ed7 | 240 | mempool_destroy(gfs2_page_pool); |
36f5580b | 241 | kmem_cache_destroy(gfs2_rsrv_cachep); |
37b2c837 | 242 | kmem_cache_destroy(gfs2_quotad_cachep); |
6bdd9be6 | 243 | kmem_cache_destroy(gfs2_rgrpd_cachep); |
b3b94faa DT |
244 | kmem_cache_destroy(gfs2_bufdata_cachep); |
245 | kmem_cache_destroy(gfs2_inode_cachep); | |
009d8518 | 246 | kmem_cache_destroy(gfs2_glock_aspace_cachep); |
b3b94faa DT |
247 | kmem_cache_destroy(gfs2_glock_cachep); |
248 | ||
249 | gfs2_sys_uninit(); | |
250 | } | |
251 | ||
252 | MODULE_DESCRIPTION("Global File System"); | |
253 | MODULE_AUTHOR("Red Hat, Inc."); | |
254 | MODULE_LICENSE("GPL"); | |
255 | ||
256 | module_init(init_gfs2_fs); | |
257 | module_exit(exit_gfs2_fs); | |
258 |