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