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 | ||
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> | |
ec45d9f5 | 19 | #include <asm/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; |
320dd101 SW |
44 | } |
45 | ||
51cc5068 | 46 | static void gfs2_init_glock_once(void *foo) |
ec45d9f5 SW |
47 | { |
48 | struct gfs2_glock *gl = foo; | |
a35afb83 | 49 | |
bc015cb8 | 50 | INIT_HLIST_BL_NODE(&gl->gl_list); |
a35afb83 CL |
51 | spin_lock_init(&gl->gl_spin); |
52 | INIT_LIST_HEAD(&gl->gl_holders); | |
97cc1025 | 53 | INIT_LIST_HEAD(&gl->gl_lru); |
a35afb83 CL |
54 | INIT_LIST_HEAD(&gl->gl_ail_list); |
55 | atomic_set(&gl->gl_ail_count, 0); | |
f42ab085 | 56 | atomic_set(&gl->gl_revokes, 0); |
ec45d9f5 SW |
57 | } |
58 | ||
009d8518 SW |
59 | static void gfs2_init_gl_aspace_once(void *foo) |
60 | { | |
61 | struct gfs2_glock *gl = foo; | |
62 | struct address_space *mapping = (struct address_space *)(gl + 1); | |
63 | ||
64 | gfs2_init_glock_once(gl); | |
2aa15890 | 65 | address_space_init_once(mapping); |
009d8518 SW |
66 | } |
67 | ||
b3b94faa DT |
68 | /** |
69 | * init_gfs2_fs - Register GFS2 as a filesystem | |
70 | * | |
71 | * Returns: 0 on success, error code on failure | |
72 | */ | |
73 | ||
74 | static int __init init_gfs2_fs(void) | |
75 | { | |
76 | int error; | |
77 | ||
8d123585 SW |
78 | gfs2_str2qstr(&gfs2_qdot, "."); |
79 | gfs2_str2qstr(&gfs2_qdotdot, ".."); | |
80 | ||
b3b94faa DT |
81 | error = gfs2_sys_init(); |
82 | if (error) | |
83 | return error; | |
84 | ||
85d1da67 SW |
85 | error = gfs2_glock_init(); |
86 | if (error) | |
87 | goto fail; | |
b3b94faa | 88 | |
85d1da67 | 89 | error = -ENOMEM; |
b3b94faa DT |
90 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
91 | sizeof(struct gfs2_glock), | |
907b9bce | 92 | 0, 0, |
20c2df83 | 93 | gfs2_init_glock_once); |
b3b94faa DT |
94 | if (!gfs2_glock_cachep) |
95 | goto fail; | |
96 | ||
7c9a84a5 | 97 | gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)", |
009d8518 SW |
98 | sizeof(struct gfs2_glock) + |
99 | sizeof(struct address_space), | |
100 | 0, 0, gfs2_init_gl_aspace_once); | |
101 | ||
102 | if (!gfs2_glock_aspace_cachep) | |
103 | goto fail; | |
104 | ||
b3b94faa DT |
105 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", |
106 | sizeof(struct gfs2_inode), | |
eb1dc33a AD |
107 | 0, SLAB_RECLAIM_ACCOUNT| |
108 | SLAB_MEM_SPREAD, | |
20c2df83 | 109 | gfs2_init_inode_once); |
b3b94faa DT |
110 | if (!gfs2_inode_cachep) |
111 | goto fail; | |
112 | ||
113 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
114 | sizeof(struct gfs2_bufdata), | |
20c2df83 | 115 | 0, 0, NULL); |
b3b94faa DT |
116 | if (!gfs2_bufdata_cachep) |
117 | goto fail; | |
118 | ||
6bdd9be6 BP |
119 | gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd", |
120 | sizeof(struct gfs2_rgrpd), | |
121 | 0, 0, NULL); | |
122 | if (!gfs2_rgrpd_cachep) | |
123 | goto fail; | |
124 | ||
37b2c837 SW |
125 | gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad", |
126 | sizeof(struct gfs2_quota_data), | |
127 | 0, 0, NULL); | |
128 | if (!gfs2_quotad_cachep) | |
129 | goto fail; | |
130 | ||
0a7ab79c AD |
131 | register_shrinker(&qd_shrinker); |
132 | ||
b3b94faa DT |
133 | error = register_filesystem(&gfs2_fs_type); |
134 | if (error) | |
135 | goto fail; | |
136 | ||
419c93e0 SW |
137 | error = register_filesystem(&gfs2meta_fs_type); |
138 | if (error) | |
139 | goto fail_unregister; | |
140 | ||
6ecd7c2d TH |
141 | error = -ENOMEM; |
142 | gfs_recovery_wq = alloc_workqueue("gfs_recovery", | |
58a69cb4 | 143 | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0); |
6ecd7c2d TH |
144 | if (!gfs_recovery_wq) |
145 | goto fail_wq; | |
fe64d517 | 146 | |
7c52b166 RP |
147 | gfs2_register_debugfs(); |
148 | ||
8d2c50e3 | 149 | printk("GFS2 installed\n"); |
b3b94faa DT |
150 | |
151 | return 0; | |
152 | ||
6ecd7c2d | 153 | fail_wq: |
fe64d517 | 154 | unregister_filesystem(&gfs2meta_fs_type); |
419c93e0 SW |
155 | fail_unregister: |
156 | unregister_filesystem(&gfs2_fs_type); | |
157 | fail: | |
0a7ab79c | 158 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 SW |
159 | gfs2_glock_exit(); |
160 | ||
37b2c837 SW |
161 | if (gfs2_quotad_cachep) |
162 | kmem_cache_destroy(gfs2_quotad_cachep); | |
163 | ||
6bdd9be6 BP |
164 | if (gfs2_rgrpd_cachep) |
165 | kmem_cache_destroy(gfs2_rgrpd_cachep); | |
166 | ||
b3b94faa DT |
167 | if (gfs2_bufdata_cachep) |
168 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
169 | ||
170 | if (gfs2_inode_cachep) | |
171 | kmem_cache_destroy(gfs2_inode_cachep); | |
172 | ||
009d8518 SW |
173 | if (gfs2_glock_aspace_cachep) |
174 | kmem_cache_destroy(gfs2_glock_aspace_cachep); | |
175 | ||
b3b94faa DT |
176 | if (gfs2_glock_cachep) |
177 | kmem_cache_destroy(gfs2_glock_cachep); | |
178 | ||
179 | gfs2_sys_uninit(); | |
180 | return error; | |
181 | } | |
182 | ||
183 | /** | |
184 | * exit_gfs2_fs - Unregister the file system | |
185 | * | |
186 | */ | |
187 | ||
188 | static void __exit exit_gfs2_fs(void) | |
189 | { | |
0a7ab79c | 190 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 | 191 | gfs2_glock_exit(); |
7c52b166 | 192 | gfs2_unregister_debugfs(); |
b3b94faa | 193 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 194 | unregister_filesystem(&gfs2meta_fs_type); |
6ecd7c2d | 195 | destroy_workqueue(gfs_recovery_wq); |
b3b94faa | 196 | |
bc015cb8 SW |
197 | rcu_barrier(); |
198 | ||
37b2c837 | 199 | kmem_cache_destroy(gfs2_quotad_cachep); |
6bdd9be6 | 200 | kmem_cache_destroy(gfs2_rgrpd_cachep); |
b3b94faa DT |
201 | kmem_cache_destroy(gfs2_bufdata_cachep); |
202 | kmem_cache_destroy(gfs2_inode_cachep); | |
009d8518 | 203 | kmem_cache_destroy(gfs2_glock_aspace_cachep); |
b3b94faa DT |
204 | kmem_cache_destroy(gfs2_glock_cachep); |
205 | ||
206 | gfs2_sys_uninit(); | |
207 | } | |
208 | ||
209 | MODULE_DESCRIPTION("Global File System"); | |
210 | MODULE_AUTHOR("Red Hat, Inc."); | |
211 | MODULE_LICENSE("GPL"); | |
212 | ||
213 | module_init(init_gfs2_fs); | |
214 | module_exit(exit_gfs2_fs); | |
215 |