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 | ||
b3b94faa DT |
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> | |
5c676f6d | 16 | #include <linux/gfs2_ondisk.h> |
bc015cb8 SW |
17 | #include <linux/rcupdate.h> |
18 | #include <linux/rculist_bl.h> | |
60063497 | 19 | #include <linux/atomic.h> |
75ca61c1 | 20 | #include <linux/mempool.h> |
b3b94faa DT |
21 | |
22 | #include "gfs2.h" | |
5c676f6d | 23 | #include "incore.h" |
b2760583 | 24 | #include "super.h" |
b3b94faa | 25 | #include "sys.h" |
5c676f6d | 26 | #include "util.h" |
85d1da67 | 27 | #include "glock.h" |
0a7ab79c | 28 | #include "quota.h" |
6ecd7c2d | 29 | #include "recovery.h" |
8d123585 | 30 | #include "dir.h" |
0a7ab79c | 31 | |
e0c2a9aa DT |
32 | struct workqueue_struct *gfs2_control_wq; |
33 | ||
0a7ab79c | 34 | static struct shrinker qd_shrinker = { |
1ab6c499 DC |
35 | .count_objects = gfs2_qd_shrink_count, |
36 | .scan_objects = gfs2_qd_shrink_scan, | |
0a7ab79c AD |
37 | .seeks = DEFAULT_SEEKS, |
38 | }; | |
b3b94faa | 39 | |
51cc5068 | 40 | static void gfs2_init_inode_once(void *foo) |
320dd101 SW |
41 | { |
42 | struct gfs2_inode *ip = foo; | |
a35afb83 CL |
43 | |
44 | inode_init_once(&ip->i_inode); | |
a35afb83 | 45 | init_rwsem(&ip->i_rw_mutex); |
813e0c46 | 46 | INIT_LIST_HEAD(&ip->i_trunc_list); |
564e12b1 | 47 | ip->i_res = NULL; |
17d539f0 | 48 | ip->i_hash_cache = NULL; |
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); |
a35afb83 CL |
56 | spin_lock_init(&gl->gl_spin); |
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, ".."); | |
85 | ||
b3b94faa DT |
86 | error = gfs2_sys_init(); |
87 | if (error) | |
88 | return error; | |
89 | ||
85d1da67 SW |
90 | error = gfs2_glock_init(); |
91 | if (error) | |
92 | goto fail; | |
b3b94faa | 93 | |
85d1da67 | 94 | error = -ENOMEM; |
b3b94faa DT |
95 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
96 | sizeof(struct gfs2_glock), | |
907b9bce | 97 | 0, 0, |
20c2df83 | 98 | gfs2_init_glock_once); |
b3b94faa DT |
99 | if (!gfs2_glock_cachep) |
100 | goto fail; | |
101 | ||
7c9a84a5 | 102 | gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)", |
009d8518 SW |
103 | sizeof(struct gfs2_glock) + |
104 | sizeof(struct address_space), | |
105 | 0, 0, gfs2_init_gl_aspace_once); | |
106 | ||
107 | if (!gfs2_glock_aspace_cachep) | |
108 | goto fail; | |
109 | ||
b3b94faa DT |
110 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", |
111 | sizeof(struct gfs2_inode), | |
eb1dc33a AD |
112 | 0, SLAB_RECLAIM_ACCOUNT| |
113 | SLAB_MEM_SPREAD, | |
20c2df83 | 114 | gfs2_init_inode_once); |
b3b94faa DT |
115 | if (!gfs2_inode_cachep) |
116 | goto fail; | |
117 | ||
118 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
119 | sizeof(struct gfs2_bufdata), | |
20c2df83 | 120 | 0, 0, NULL); |
b3b94faa DT |
121 | if (!gfs2_bufdata_cachep) |
122 | goto fail; | |
123 | ||
6bdd9be6 BP |
124 | gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd", |
125 | sizeof(struct gfs2_rgrpd), | |
126 | 0, 0, NULL); | |
127 | if (!gfs2_rgrpd_cachep) | |
128 | goto fail; | |
129 | ||
37b2c837 SW |
130 | gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad", |
131 | sizeof(struct gfs2_quota_data), | |
132 | 0, 0, NULL); | |
133 | if (!gfs2_quotad_cachep) | |
134 | goto fail; | |
135 | ||
36f5580b BP |
136 | gfs2_rsrv_cachep = kmem_cache_create("gfs2_mblk", |
137 | sizeof(struct gfs2_blkreserv), | |
138 | 0, 0, NULL); | |
139 | if (!gfs2_rsrv_cachep) | |
140 | goto fail; | |
141 | ||
0a7ab79c AD |
142 | register_shrinker(&qd_shrinker); |
143 | ||
b3b94faa DT |
144 | error = register_filesystem(&gfs2_fs_type); |
145 | if (error) | |
146 | goto fail; | |
147 | ||
419c93e0 SW |
148 | error = register_filesystem(&gfs2meta_fs_type); |
149 | if (error) | |
150 | goto fail_unregister; | |
151 | ||
6ecd7c2d TH |
152 | error = -ENOMEM; |
153 | gfs_recovery_wq = alloc_workqueue("gfs_recovery", | |
58a69cb4 | 154 | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0); |
6ecd7c2d TH |
155 | if (!gfs_recovery_wq) |
156 | goto fail_wq; | |
fe64d517 | 157 | |
e0c2a9aa | 158 | gfs2_control_wq = alloc_workqueue("gfs2_control", |
d08fa65a | 159 | WQ_UNBOUND | WQ_FREEZABLE, 0); |
e0c2a9aa | 160 | if (!gfs2_control_wq) |
75ca61c1 SW |
161 | goto fail_recovery; |
162 | ||
e8c92ed7 SW |
163 | gfs2_page_pool = mempool_create_page_pool(64, 0); |
164 | if (!gfs2_page_pool) | |
e0c2a9aa DT |
165 | goto fail_control; |
166 | ||
7c52b166 RP |
167 | gfs2_register_debugfs(); |
168 | ||
8d2c50e3 | 169 | printk("GFS2 installed\n"); |
b3b94faa DT |
170 | |
171 | return 0; | |
172 | ||
e0c2a9aa | 173 | fail_control: |
75ca61c1 SW |
174 | destroy_workqueue(gfs2_control_wq); |
175 | fail_recovery: | |
e0c2a9aa | 176 | destroy_workqueue(gfs_recovery_wq); |
6ecd7c2d | 177 | fail_wq: |
fe64d517 | 178 | unregister_filesystem(&gfs2meta_fs_type); |
419c93e0 SW |
179 | fail_unregister: |
180 | unregister_filesystem(&gfs2_fs_type); | |
181 | fail: | |
0a7ab79c | 182 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 SW |
183 | gfs2_glock_exit(); |
184 | ||
36f5580b BP |
185 | if (gfs2_rsrv_cachep) |
186 | kmem_cache_destroy(gfs2_rsrv_cachep); | |
187 | ||
37b2c837 SW |
188 | if (gfs2_quotad_cachep) |
189 | kmem_cache_destroy(gfs2_quotad_cachep); | |
190 | ||
6bdd9be6 BP |
191 | if (gfs2_rgrpd_cachep) |
192 | kmem_cache_destroy(gfs2_rgrpd_cachep); | |
193 | ||
b3b94faa DT |
194 | if (gfs2_bufdata_cachep) |
195 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
196 | ||
197 | if (gfs2_inode_cachep) | |
198 | kmem_cache_destroy(gfs2_inode_cachep); | |
199 | ||
009d8518 SW |
200 | if (gfs2_glock_aspace_cachep) |
201 | kmem_cache_destroy(gfs2_glock_aspace_cachep); | |
202 | ||
b3b94faa DT |
203 | if (gfs2_glock_cachep) |
204 | kmem_cache_destroy(gfs2_glock_cachep); | |
205 | ||
206 | gfs2_sys_uninit(); | |
207 | return error; | |
208 | } | |
209 | ||
210 | /** | |
211 | * exit_gfs2_fs - Unregister the file system | |
212 | * | |
213 | */ | |
214 | ||
215 | static void __exit exit_gfs2_fs(void) | |
216 | { | |
0a7ab79c | 217 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 | 218 | gfs2_glock_exit(); |
7c52b166 | 219 | gfs2_unregister_debugfs(); |
b3b94faa | 220 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 221 | unregister_filesystem(&gfs2meta_fs_type); |
6ecd7c2d | 222 | destroy_workqueue(gfs_recovery_wq); |
e0c2a9aa | 223 | destroy_workqueue(gfs2_control_wq); |
b3b94faa | 224 | |
bc015cb8 SW |
225 | rcu_barrier(); |
226 | ||
e8c92ed7 | 227 | mempool_destroy(gfs2_page_pool); |
36f5580b | 228 | kmem_cache_destroy(gfs2_rsrv_cachep); |
37b2c837 | 229 | kmem_cache_destroy(gfs2_quotad_cachep); |
6bdd9be6 | 230 | kmem_cache_destroy(gfs2_rgrpd_cachep); |
b3b94faa DT |
231 | kmem_cache_destroy(gfs2_bufdata_cachep); |
232 | kmem_cache_destroy(gfs2_inode_cachep); | |
009d8518 | 233 | kmem_cache_destroy(gfs2_glock_aspace_cachep); |
b3b94faa DT |
234 | kmem_cache_destroy(gfs2_glock_cachep); |
235 | ||
236 | gfs2_sys_uninit(); | |
237 | } | |
238 | ||
239 | MODULE_DESCRIPTION("Global File System"); | |
240 | MODULE_AUTHOR("Red Hat, Inc."); | |
241 | MODULE_LICENSE("GPL"); | |
242 | ||
243 | module_init(init_gfs2_fs); | |
244 | module_exit(exit_gfs2_fs); | |
245 |