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