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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 | ||
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> |
b3b94faa DT |
20 | |
21 | #include "gfs2.h" | |
5c676f6d | 22 | #include "incore.h" |
b2760583 | 23 | #include "super.h" |
b3b94faa | 24 | #include "sys.h" |
5c676f6d | 25 | #include "util.h" |
85d1da67 | 26 | #include "glock.h" |
0a7ab79c | 27 | #include "quota.h" |
6ecd7c2d | 28 | #include "recovery.h" |
8d123585 | 29 | #include "dir.h" |
0a7ab79c AD |
30 | |
31 | static struct shrinker qd_shrinker = { | |
32 | .shrink = gfs2_shrink_qd_memory, | |
33 | .seeks = DEFAULT_SEEKS, | |
34 | }; | |
b3b94faa | 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); |
6dbd8224 | 43 | ip->i_alloc = 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, ".."); | |
81 | ||
b3b94faa DT |
82 | error = gfs2_sys_init(); |
83 | if (error) | |
84 | return error; | |
85 | ||
85d1da67 SW |
86 | error = gfs2_glock_init(); |
87 | if (error) | |
88 | goto fail; | |
b3b94faa | 89 | |
85d1da67 | 90 | error = -ENOMEM; |
b3b94faa DT |
91 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
92 | sizeof(struct gfs2_glock), | |
907b9bce | 93 | 0, 0, |
20c2df83 | 94 | gfs2_init_glock_once); |
b3b94faa DT |
95 | if (!gfs2_glock_cachep) |
96 | goto fail; | |
97 | ||
7c9a84a5 | 98 | gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)", |
009d8518 SW |
99 | sizeof(struct gfs2_glock) + |
100 | sizeof(struct address_space), | |
101 | 0, 0, gfs2_init_gl_aspace_once); | |
102 | ||
103 | if (!gfs2_glock_aspace_cachep) | |
104 | goto fail; | |
105 | ||
b3b94faa DT |
106 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", |
107 | sizeof(struct gfs2_inode), | |
eb1dc33a AD |
108 | 0, SLAB_RECLAIM_ACCOUNT| |
109 | SLAB_MEM_SPREAD, | |
20c2df83 | 110 | gfs2_init_inode_once); |
b3b94faa DT |
111 | if (!gfs2_inode_cachep) |
112 | goto fail; | |
113 | ||
114 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
115 | sizeof(struct gfs2_bufdata), | |
20c2df83 | 116 | 0, 0, NULL); |
b3b94faa DT |
117 | if (!gfs2_bufdata_cachep) |
118 | goto fail; | |
119 | ||
6bdd9be6 BP |
120 | gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd", |
121 | sizeof(struct gfs2_rgrpd), | |
122 | 0, 0, NULL); | |
123 | if (!gfs2_rgrpd_cachep) | |
124 | goto fail; | |
125 | ||
37b2c837 SW |
126 | gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad", |
127 | sizeof(struct gfs2_quota_data), | |
128 | 0, 0, NULL); | |
129 | if (!gfs2_quotad_cachep) | |
130 | goto fail; | |
131 | ||
0a7ab79c AD |
132 | register_shrinker(&qd_shrinker); |
133 | ||
b3b94faa DT |
134 | error = register_filesystem(&gfs2_fs_type); |
135 | if (error) | |
136 | goto fail; | |
137 | ||
419c93e0 SW |
138 | error = register_filesystem(&gfs2meta_fs_type); |
139 | if (error) | |
140 | goto fail_unregister; | |
141 | ||
6ecd7c2d TH |
142 | error = -ENOMEM; |
143 | gfs_recovery_wq = alloc_workqueue("gfs_recovery", | |
58a69cb4 | 144 | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0); |
6ecd7c2d TH |
145 | if (!gfs_recovery_wq) |
146 | goto fail_wq; | |
fe64d517 | 147 | |
7c52b166 RP |
148 | gfs2_register_debugfs(); |
149 | ||
8d2c50e3 | 150 | printk("GFS2 installed\n"); |
b3b94faa DT |
151 | |
152 | return 0; | |
153 | ||
6ecd7c2d | 154 | fail_wq: |
fe64d517 | 155 | unregister_filesystem(&gfs2meta_fs_type); |
419c93e0 SW |
156 | fail_unregister: |
157 | unregister_filesystem(&gfs2_fs_type); | |
158 | fail: | |
0a7ab79c | 159 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 SW |
160 | gfs2_glock_exit(); |
161 | ||
37b2c837 SW |
162 | if (gfs2_quotad_cachep) |
163 | kmem_cache_destroy(gfs2_quotad_cachep); | |
164 | ||
6bdd9be6 BP |
165 | if (gfs2_rgrpd_cachep) |
166 | kmem_cache_destroy(gfs2_rgrpd_cachep); | |
167 | ||
b3b94faa DT |
168 | if (gfs2_bufdata_cachep) |
169 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
170 | ||
171 | if (gfs2_inode_cachep) | |
172 | kmem_cache_destroy(gfs2_inode_cachep); | |
173 | ||
009d8518 SW |
174 | if (gfs2_glock_aspace_cachep) |
175 | kmem_cache_destroy(gfs2_glock_aspace_cachep); | |
176 | ||
b3b94faa DT |
177 | if (gfs2_glock_cachep) |
178 | kmem_cache_destroy(gfs2_glock_cachep); | |
179 | ||
180 | gfs2_sys_uninit(); | |
181 | return error; | |
182 | } | |
183 | ||
184 | /** | |
185 | * exit_gfs2_fs - Unregister the file system | |
186 | * | |
187 | */ | |
188 | ||
189 | static void __exit exit_gfs2_fs(void) | |
190 | { | |
0a7ab79c | 191 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 | 192 | gfs2_glock_exit(); |
7c52b166 | 193 | gfs2_unregister_debugfs(); |
b3b94faa | 194 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 195 | unregister_filesystem(&gfs2meta_fs_type); |
6ecd7c2d | 196 | destroy_workqueue(gfs_recovery_wq); |
b3b94faa | 197 | |
bc015cb8 SW |
198 | rcu_barrier(); |
199 | ||
37b2c837 | 200 | kmem_cache_destroy(gfs2_quotad_cachep); |
6bdd9be6 | 201 | kmem_cache_destroy(gfs2_rgrpd_cachep); |
b3b94faa DT |
202 | kmem_cache_destroy(gfs2_bufdata_cachep); |
203 | kmem_cache_destroy(gfs2_inode_cachep); | |
009d8518 | 204 | kmem_cache_destroy(gfs2_glock_aspace_cachep); |
b3b94faa DT |
205 | kmem_cache_destroy(gfs2_glock_cachep); |
206 | ||
207 | gfs2_sys_uninit(); | |
208 | } | |
209 | ||
210 | MODULE_DESCRIPTION("Global File System"); | |
211 | MODULE_AUTHOR("Red Hat, Inc."); | |
212 | MODULE_LICENSE("GPL"); | |
213 | ||
214 | module_init(init_gfs2_fs); | |
215 | module_exit(exit_gfs2_fs); | |
216 |