Commit | Line | Data |
---|---|---|
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" |
0a7ab79c | 33 | |
e0c2a9aa DT |
34 | struct workqueue_struct *gfs2_control_wq; |
35 | ||
51cc5068 | 36 | static void gfs2_init_inode_once(void *foo) |
320dd101 SW |
37 | { |
38 | struct gfs2_inode *ip = foo; | |
a35afb83 CL |
39 | |
40 | inode_init_once(&ip->i_inode); | |
a35afb83 | 41 | init_rwsem(&ip->i_rw_mutex); |
813e0c46 | 42 | INIT_LIST_HEAD(&ip->i_trunc_list); |
564e12b1 | 43 | ip->i_res = NULL; |
17d539f0 | 44 | ip->i_hash_cache = NULL; |
320dd101 SW |
45 | } |
46 | ||
51cc5068 | 47 | static void gfs2_init_glock_once(void *foo) |
ec45d9f5 SW |
48 | { |
49 | struct gfs2_glock *gl = foo; | |
a35afb83 | 50 | |
bc015cb8 | 51 | INIT_HLIST_BL_NODE(&gl->gl_list); |
a35afb83 CL |
52 | spin_lock_init(&gl->gl_spin); |
53 | INIT_LIST_HEAD(&gl->gl_holders); | |
97cc1025 | 54 | INIT_LIST_HEAD(&gl->gl_lru); |
a35afb83 CL |
55 | INIT_LIST_HEAD(&gl->gl_ail_list); |
56 | atomic_set(&gl->gl_ail_count, 0); | |
f42ab085 | 57 | atomic_set(&gl->gl_revokes, 0); |
ec45d9f5 SW |
58 | } |
59 | ||
009d8518 SW |
60 | static 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); | |
2aa15890 | 66 | address_space_init_once(mapping); |
009d8518 SW |
67 | } |
68 | ||
b3b94faa DT |
69 | /** |
70 | * init_gfs2_fs - Register GFS2 as a filesystem | |
71 | * | |
72 | * Returns: 0 on success, error code on failure | |
73 | */ | |
74 | ||
75 | static int __init init_gfs2_fs(void) | |
76 | { | |
77 | int error; | |
78 | ||
8d123585 SW |
79 | gfs2_str2qstr(&gfs2_qdot, "."); |
80 | gfs2_str2qstr(&gfs2_qdotdot, ".."); | |
c754fbbb | 81 | gfs2_quota_hash_init(); |
8d123585 | 82 | |
b3b94faa DT |
83 | error = gfs2_sys_init(); |
84 | if (error) | |
85 | return error; | |
86 | ||
2147dbfd SW |
87 | error = list_lru_init(&gfs2_qd_lru); |
88 | if (error) | |
89 | goto fail_lru; | |
90 | ||
85d1da67 SW |
91 | error = gfs2_glock_init(); |
92 | if (error) | |
93 | goto fail; | |
b3b94faa | 94 | |
85d1da67 | 95 | error = -ENOMEM; |
b3b94faa DT |
96 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
97 | sizeof(struct gfs2_glock), | |
907b9bce | 98 | 0, 0, |
20c2df83 | 99 | gfs2_init_glock_once); |
b3b94faa DT |
100 | if (!gfs2_glock_cachep) |
101 | goto fail; | |
102 | ||
7c9a84a5 | 103 | gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)", |
009d8518 SW |
104 | sizeof(struct gfs2_glock) + |
105 | sizeof(struct address_space), | |
106 | 0, 0, gfs2_init_gl_aspace_once); | |
107 | ||
108 | if (!gfs2_glock_aspace_cachep) | |
109 | goto fail; | |
110 | ||
b3b94faa DT |
111 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", |
112 | sizeof(struct gfs2_inode), | |
eb1dc33a AD |
113 | 0, SLAB_RECLAIM_ACCOUNT| |
114 | SLAB_MEM_SPREAD, | |
20c2df83 | 115 | gfs2_init_inode_once); |
b3b94faa DT |
116 | if (!gfs2_inode_cachep) |
117 | goto fail; | |
118 | ||
119 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
120 | sizeof(struct gfs2_bufdata), | |
20c2df83 | 121 | 0, 0, NULL); |
b3b94faa DT |
122 | if (!gfs2_bufdata_cachep) |
123 | goto fail; | |
124 | ||
6bdd9be6 BP |
125 | gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd", |
126 | sizeof(struct gfs2_rgrpd), | |
127 | 0, 0, NULL); | |
128 | if (!gfs2_rgrpd_cachep) | |
129 | goto fail; | |
130 | ||
37b2c837 SW |
131 | gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad", |
132 | sizeof(struct gfs2_quota_data), | |
133 | 0, 0, NULL); | |
134 | if (!gfs2_quotad_cachep) | |
135 | goto fail; | |
136 | ||
36f5580b BP |
137 | gfs2_rsrv_cachep = kmem_cache_create("gfs2_mblk", |
138 | sizeof(struct gfs2_blkreserv), | |
139 | 0, 0, NULL); | |
140 | if (!gfs2_rsrv_cachep) | |
141 | goto fail; | |
142 | ||
2147dbfd | 143 | register_shrinker(&gfs2_qd_shrinker); |
0a7ab79c | 144 | |
b3b94faa DT |
145 | error = register_filesystem(&gfs2_fs_type); |
146 | if (error) | |
147 | goto fail; | |
148 | ||
419c93e0 SW |
149 | error = register_filesystem(&gfs2meta_fs_type); |
150 | if (error) | |
151 | goto fail_unregister; | |
152 | ||
6ecd7c2d TH |
153 | error = -ENOMEM; |
154 | gfs_recovery_wq = alloc_workqueue("gfs_recovery", | |
58a69cb4 | 155 | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0); |
6ecd7c2d TH |
156 | if (!gfs_recovery_wq) |
157 | goto fail_wq; | |
fe64d517 | 158 | |
e0c2a9aa | 159 | gfs2_control_wq = alloc_workqueue("gfs2_control", |
d08fa65a | 160 | WQ_UNBOUND | WQ_FREEZABLE, 0); |
e0c2a9aa | 161 | if (!gfs2_control_wq) |
75ca61c1 SW |
162 | goto fail_recovery; |
163 | ||
e8c92ed7 SW |
164 | gfs2_page_pool = mempool_create_page_pool(64, 0); |
165 | if (!gfs2_page_pool) | |
e0c2a9aa DT |
166 | goto fail_control; |
167 | ||
7c52b166 RP |
168 | gfs2_register_debugfs(); |
169 | ||
fc554ed3 | 170 | pr_info("GFS2 installed\n"); |
b3b94faa DT |
171 | |
172 | return 0; | |
173 | ||
e0c2a9aa | 174 | fail_control: |
75ca61c1 SW |
175 | destroy_workqueue(gfs2_control_wq); |
176 | fail_recovery: | |
e0c2a9aa | 177 | destroy_workqueue(gfs_recovery_wq); |
6ecd7c2d | 178 | fail_wq: |
fe64d517 | 179 | unregister_filesystem(&gfs2meta_fs_type); |
419c93e0 SW |
180 | fail_unregister: |
181 | unregister_filesystem(&gfs2_fs_type); | |
182 | fail: | |
2147dbfd SW |
183 | list_lru_destroy(&gfs2_qd_lru); |
184 | fail_lru: | |
185 | unregister_shrinker(&gfs2_qd_shrinker); | |
8fbbfd21 SW |
186 | gfs2_glock_exit(); |
187 | ||
36f5580b BP |
188 | if (gfs2_rsrv_cachep) |
189 | kmem_cache_destroy(gfs2_rsrv_cachep); | |
190 | ||
37b2c837 SW |
191 | if (gfs2_quotad_cachep) |
192 | kmem_cache_destroy(gfs2_quotad_cachep); | |
193 | ||
6bdd9be6 BP |
194 | if (gfs2_rgrpd_cachep) |
195 | kmem_cache_destroy(gfs2_rgrpd_cachep); | |
196 | ||
b3b94faa DT |
197 | if (gfs2_bufdata_cachep) |
198 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
199 | ||
200 | if (gfs2_inode_cachep) | |
201 | kmem_cache_destroy(gfs2_inode_cachep); | |
202 | ||
009d8518 SW |
203 | if (gfs2_glock_aspace_cachep) |
204 | kmem_cache_destroy(gfs2_glock_aspace_cachep); | |
205 | ||
b3b94faa DT |
206 | if (gfs2_glock_cachep) |
207 | kmem_cache_destroy(gfs2_glock_cachep); | |
208 | ||
209 | gfs2_sys_uninit(); | |
210 | return error; | |
211 | } | |
212 | ||
213 | /** | |
214 | * exit_gfs2_fs - Unregister the file system | |
215 | * | |
216 | */ | |
217 | ||
218 | static void __exit exit_gfs2_fs(void) | |
219 | { | |
2147dbfd | 220 | unregister_shrinker(&gfs2_qd_shrinker); |
8fbbfd21 | 221 | gfs2_glock_exit(); |
7c52b166 | 222 | gfs2_unregister_debugfs(); |
b3b94faa | 223 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 224 | unregister_filesystem(&gfs2meta_fs_type); |
6ecd7c2d | 225 | destroy_workqueue(gfs_recovery_wq); |
e0c2a9aa | 226 | destroy_workqueue(gfs2_control_wq); |
2147dbfd | 227 | list_lru_destroy(&gfs2_qd_lru); |
b3b94faa | 228 | |
bc015cb8 SW |
229 | rcu_barrier(); |
230 | ||
e8c92ed7 | 231 | mempool_destroy(gfs2_page_pool); |
36f5580b | 232 | kmem_cache_destroy(gfs2_rsrv_cachep); |
37b2c837 | 233 | kmem_cache_destroy(gfs2_quotad_cachep); |
6bdd9be6 | 234 | kmem_cache_destroy(gfs2_rgrpd_cachep); |
b3b94faa DT |
235 | kmem_cache_destroy(gfs2_bufdata_cachep); |
236 | kmem_cache_destroy(gfs2_inode_cachep); | |
009d8518 | 237 | kmem_cache_destroy(gfs2_glock_aspace_cachep); |
b3b94faa DT |
238 | kmem_cache_destroy(gfs2_glock_cachep); |
239 | ||
240 | gfs2_sys_uninit(); | |
241 | } | |
242 | ||
243 | MODULE_DESCRIPTION("Global File System"); | |
244 | MODULE_AUTHOR("Red Hat, Inc."); | |
245 | MODULE_LICENSE("GPL"); | |
246 | ||
247 | module_init(init_gfs2_fs); | |
248 | module_exit(exit_gfs2_fs); | |
249 |