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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); |
b54e9a0b | 44 | ip->i_qadata = NULL; |
a097dc7e BP |
45 | memset(&ip->i_res, 0, sizeof(ip->i_res)); |
46 | RB_CLEAR_NODE(&ip->i_res.rs_node); | |
17d539f0 | 47 | ip->i_hash_cache = NULL; |
6df9f9a2 | 48 | gfs2_holder_mark_uninitialized(&ip->i_iopen_gh); |
320dd101 SW |
49 | } |
50 | ||
51cc5068 | 51 | static void gfs2_init_glock_once(void *foo) |
ec45d9f5 SW |
52 | { |
53 | struct gfs2_glock *gl = foo; | |
a35afb83 | 54 | |
f3dd1649 | 55 | spin_lock_init(&gl->gl_lockref.lock); |
a35afb83 | 56 | INIT_LIST_HEAD(&gl->gl_holders); |
97cc1025 | 57 | INIT_LIST_HEAD(&gl->gl_lru); |
a35afb83 CL |
58 | INIT_LIST_HEAD(&gl->gl_ail_list); |
59 | atomic_set(&gl->gl_ail_count, 0); | |
f42ab085 | 60 | atomic_set(&gl->gl_revokes, 0); |
ec45d9f5 SW |
61 | } |
62 | ||
009d8518 SW |
63 | static void gfs2_init_gl_aspace_once(void *foo) |
64 | { | |
65 | struct gfs2_glock *gl = foo; | |
66 | struct address_space *mapping = (struct address_space *)(gl + 1); | |
67 | ||
68 | gfs2_init_glock_once(gl); | |
2aa15890 | 69 | address_space_init_once(mapping); |
009d8518 SW |
70 | } |
71 | ||
b3b94faa DT |
72 | /** |
73 | * init_gfs2_fs - Register GFS2 as a filesystem | |
74 | * | |
75 | * Returns: 0 on success, error code on failure | |
76 | */ | |
77 | ||
78 | static int __init init_gfs2_fs(void) | |
79 | { | |
80 | int error; | |
81 | ||
8d123585 SW |
82 | gfs2_str2qstr(&gfs2_qdot, "."); |
83 | gfs2_str2qstr(&gfs2_qdotdot, ".."); | |
c754fbbb | 84 | gfs2_quota_hash_init(); |
8d123585 | 85 | |
b3b94faa DT |
86 | error = gfs2_sys_init(); |
87 | if (error) | |
88 | return error; | |
89 | ||
2147dbfd SW |
90 | error = list_lru_init(&gfs2_qd_lru); |
91 | if (error) | |
92 | goto fail_lru; | |
93 | ||
85d1da67 SW |
94 | error = gfs2_glock_init(); |
95 | if (error) | |
96 | goto fail; | |
b3b94faa | 97 | |
85d1da67 | 98 | error = -ENOMEM; |
b3b94faa DT |
99 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
100 | sizeof(struct gfs2_glock), | |
907b9bce | 101 | 0, 0, |
20c2df83 | 102 | gfs2_init_glock_once); |
b3b94faa DT |
103 | if (!gfs2_glock_cachep) |
104 | goto fail; | |
105 | ||
7c9a84a5 | 106 | gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)", |
009d8518 SW |
107 | sizeof(struct gfs2_glock) + |
108 | sizeof(struct address_space), | |
109 | 0, 0, gfs2_init_gl_aspace_once); | |
110 | ||
111 | if (!gfs2_glock_aspace_cachep) | |
112 | goto fail; | |
113 | ||
b3b94faa DT |
114 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", |
115 | sizeof(struct gfs2_inode), | |
eb1dc33a | 116 | 0, SLAB_RECLAIM_ACCOUNT| |
5d097056 VD |
117 | SLAB_MEM_SPREAD| |
118 | SLAB_ACCOUNT, | |
20c2df83 | 119 | gfs2_init_inode_once); |
b3b94faa DT |
120 | if (!gfs2_inode_cachep) |
121 | goto fail; | |
122 | ||
123 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
124 | sizeof(struct gfs2_bufdata), | |
20c2df83 | 125 | 0, 0, NULL); |
b3b94faa DT |
126 | if (!gfs2_bufdata_cachep) |
127 | goto fail; | |
128 | ||
6bdd9be6 BP |
129 | gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd", |
130 | sizeof(struct gfs2_rgrpd), | |
131 | 0, 0, NULL); | |
132 | if (!gfs2_rgrpd_cachep) | |
133 | goto fail; | |
134 | ||
37b2c837 SW |
135 | gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad", |
136 | sizeof(struct gfs2_quota_data), | |
137 | 0, 0, NULL); | |
138 | if (!gfs2_quotad_cachep) | |
139 | goto fail; | |
140 | ||
b54e9a0b BP |
141 | gfs2_qadata_cachep = kmem_cache_create("gfs2_qadata", |
142 | sizeof(struct gfs2_qadata), | |
143 | 0, 0, NULL); | |
144 | if (!gfs2_qadata_cachep) | |
145 | goto fail; | |
146 | ||
e0d735c1 CY |
147 | error = register_shrinker(&gfs2_qd_shrinker); |
148 | if (error) | |
149 | goto fail; | |
0a7ab79c | 150 | |
b3b94faa DT |
151 | error = register_filesystem(&gfs2_fs_type); |
152 | if (error) | |
153 | goto fail; | |
154 | ||
419c93e0 SW |
155 | error = register_filesystem(&gfs2meta_fs_type); |
156 | if (error) | |
157 | goto fail_unregister; | |
158 | ||
6ecd7c2d TH |
159 | error = -ENOMEM; |
160 | gfs_recovery_wq = alloc_workqueue("gfs_recovery", | |
58a69cb4 | 161 | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0); |
6ecd7c2d TH |
162 | if (!gfs_recovery_wq) |
163 | goto fail_wq; | |
fe64d517 | 164 | |
e0c2a9aa | 165 | gfs2_control_wq = alloc_workqueue("gfs2_control", |
d08fa65a | 166 | WQ_UNBOUND | WQ_FREEZABLE, 0); |
e0c2a9aa | 167 | if (!gfs2_control_wq) |
75ca61c1 SW |
168 | goto fail_recovery; |
169 | ||
2e60d768 BM |
170 | gfs2_freeze_wq = alloc_workqueue("freeze_workqueue", 0, 0); |
171 | ||
172 | if (!gfs2_freeze_wq) | |
173 | goto fail_control; | |
174 | ||
e8c92ed7 SW |
175 | gfs2_page_pool = mempool_create_page_pool(64, 0); |
176 | if (!gfs2_page_pool) | |
2e60d768 | 177 | goto fail_freeze; |
e0c2a9aa | 178 | |
7c52b166 RP |
179 | gfs2_register_debugfs(); |
180 | ||
fc554ed3 | 181 | pr_info("GFS2 installed\n"); |
b3b94faa DT |
182 | |
183 | return 0; | |
184 | ||
2e60d768 BM |
185 | fail_freeze: |
186 | destroy_workqueue(gfs2_freeze_wq); | |
e0c2a9aa | 187 | fail_control: |
75ca61c1 SW |
188 | destroy_workqueue(gfs2_control_wq); |
189 | fail_recovery: | |
e0c2a9aa | 190 | destroy_workqueue(gfs_recovery_wq); |
6ecd7c2d | 191 | fail_wq: |
fe64d517 | 192 | unregister_filesystem(&gfs2meta_fs_type); |
419c93e0 SW |
193 | fail_unregister: |
194 | unregister_filesystem(&gfs2_fs_type); | |
195 | fail: | |
2147dbfd SW |
196 | list_lru_destroy(&gfs2_qd_lru); |
197 | fail_lru: | |
198 | unregister_shrinker(&gfs2_qd_shrinker); | |
8fbbfd21 SW |
199 | gfs2_glock_exit(); |
200 | ||
b54e9a0b BP |
201 | if (gfs2_qadata_cachep) |
202 | kmem_cache_destroy(gfs2_qadata_cachep); | |
203 | ||
37b2c837 SW |
204 | if (gfs2_quotad_cachep) |
205 | kmem_cache_destroy(gfs2_quotad_cachep); | |
206 | ||
6bdd9be6 BP |
207 | if (gfs2_rgrpd_cachep) |
208 | kmem_cache_destroy(gfs2_rgrpd_cachep); | |
209 | ||
b3b94faa DT |
210 | if (gfs2_bufdata_cachep) |
211 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
212 | ||
213 | if (gfs2_inode_cachep) | |
214 | kmem_cache_destroy(gfs2_inode_cachep); | |
215 | ||
009d8518 SW |
216 | if (gfs2_glock_aspace_cachep) |
217 | kmem_cache_destroy(gfs2_glock_aspace_cachep); | |
218 | ||
b3b94faa DT |
219 | if (gfs2_glock_cachep) |
220 | kmem_cache_destroy(gfs2_glock_cachep); | |
221 | ||
222 | gfs2_sys_uninit(); | |
223 | return error; | |
224 | } | |
225 | ||
226 | /** | |
227 | * exit_gfs2_fs - Unregister the file system | |
228 | * | |
229 | */ | |
230 | ||
231 | static void __exit exit_gfs2_fs(void) | |
232 | { | |
2147dbfd | 233 | unregister_shrinker(&gfs2_qd_shrinker); |
8fbbfd21 | 234 | gfs2_glock_exit(); |
7c52b166 | 235 | gfs2_unregister_debugfs(); |
b3b94faa | 236 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 237 | unregister_filesystem(&gfs2meta_fs_type); |
6ecd7c2d | 238 | destroy_workqueue(gfs_recovery_wq); |
e0c2a9aa | 239 | destroy_workqueue(gfs2_control_wq); |
2e60d768 | 240 | destroy_workqueue(gfs2_freeze_wq); |
2147dbfd | 241 | list_lru_destroy(&gfs2_qd_lru); |
b3b94faa | 242 | |
bc015cb8 SW |
243 | rcu_barrier(); |
244 | ||
e8c92ed7 | 245 | mempool_destroy(gfs2_page_pool); |
b54e9a0b | 246 | kmem_cache_destroy(gfs2_qadata_cachep); |
37b2c837 | 247 | kmem_cache_destroy(gfs2_quotad_cachep); |
6bdd9be6 | 248 | kmem_cache_destroy(gfs2_rgrpd_cachep); |
b3b94faa DT |
249 | kmem_cache_destroy(gfs2_bufdata_cachep); |
250 | kmem_cache_destroy(gfs2_inode_cachep); | |
009d8518 | 251 | kmem_cache_destroy(gfs2_glock_aspace_cachep); |
b3b94faa DT |
252 | kmem_cache_destroy(gfs2_glock_cachep); |
253 | ||
254 | gfs2_sys_uninit(); | |
255 | } | |
256 | ||
257 | MODULE_DESCRIPTION("Global File System"); | |
258 | MODULE_AUTHOR("Red Hat, Inc."); | |
259 | MODULE_LICENSE("GPL"); | |
260 | ||
261 | module_init(init_gfs2_fs); | |
262 | module_exit(exit_gfs2_fs); | |
263 |