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> |
ec45d9f5 | 17 | #include <asm/atomic.h> |
b3b94faa DT |
18 | |
19 | #include "gfs2.h" | |
5c676f6d | 20 | #include "incore.h" |
b2760583 | 21 | #include "super.h" |
b3b94faa | 22 | #include "sys.h" |
5c676f6d | 23 | #include "util.h" |
85d1da67 | 24 | #include "glock.h" |
0a7ab79c AD |
25 | #include "quota.h" |
26 | ||
27 | static struct shrinker qd_shrinker = { | |
28 | .shrink = gfs2_shrink_qd_memory, | |
29 | .seeks = DEFAULT_SEEKS, | |
30 | }; | |
b3b94faa | 31 | |
51cc5068 | 32 | static void gfs2_init_inode_once(void *foo) |
320dd101 SW |
33 | { |
34 | struct gfs2_inode *ip = foo; | |
a35afb83 CL |
35 | |
36 | inode_init_once(&ip->i_inode); | |
a35afb83 | 37 | init_rwsem(&ip->i_rw_mutex); |
813e0c46 | 38 | INIT_LIST_HEAD(&ip->i_trunc_list); |
6dbd8224 | 39 | ip->i_alloc = NULL; |
320dd101 SW |
40 | } |
41 | ||
51cc5068 | 42 | static void gfs2_init_glock_once(void *foo) |
ec45d9f5 SW |
43 | { |
44 | struct gfs2_glock *gl = foo; | |
a35afb83 CL |
45 | |
46 | INIT_HLIST_NODE(&gl->gl_list); | |
47 | spin_lock_init(&gl->gl_spin); | |
48 | INIT_LIST_HEAD(&gl->gl_holders); | |
97cc1025 | 49 | INIT_LIST_HEAD(&gl->gl_lru); |
a35afb83 CL |
50 | INIT_LIST_HEAD(&gl->gl_ail_list); |
51 | atomic_set(&gl->gl_ail_count, 0); | |
ec45d9f5 SW |
52 | } |
53 | ||
b3b94faa DT |
54 | /** |
55 | * init_gfs2_fs - Register GFS2 as a filesystem | |
56 | * | |
57 | * Returns: 0 on success, error code on failure | |
58 | */ | |
59 | ||
60 | static int __init init_gfs2_fs(void) | |
61 | { | |
62 | int error; | |
63 | ||
b3b94faa DT |
64 | error = gfs2_sys_init(); |
65 | if (error) | |
66 | return error; | |
67 | ||
85d1da67 SW |
68 | error = gfs2_glock_init(); |
69 | if (error) | |
70 | goto fail; | |
b3b94faa | 71 | |
85d1da67 | 72 | error = -ENOMEM; |
b3b94faa DT |
73 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
74 | sizeof(struct gfs2_glock), | |
907b9bce | 75 | 0, 0, |
20c2df83 | 76 | gfs2_init_glock_once); |
b3b94faa DT |
77 | if (!gfs2_glock_cachep) |
78 | goto fail; | |
79 | ||
80 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", | |
81 | sizeof(struct gfs2_inode), | |
eb1dc33a AD |
82 | 0, SLAB_RECLAIM_ACCOUNT| |
83 | SLAB_MEM_SPREAD, | |
20c2df83 | 84 | gfs2_init_inode_once); |
b3b94faa DT |
85 | if (!gfs2_inode_cachep) |
86 | goto fail; | |
87 | ||
88 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
89 | sizeof(struct gfs2_bufdata), | |
20c2df83 | 90 | 0, 0, NULL); |
b3b94faa DT |
91 | if (!gfs2_bufdata_cachep) |
92 | goto fail; | |
93 | ||
6bdd9be6 BP |
94 | gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd", |
95 | sizeof(struct gfs2_rgrpd), | |
96 | 0, 0, NULL); | |
97 | if (!gfs2_rgrpd_cachep) | |
98 | goto fail; | |
99 | ||
37b2c837 SW |
100 | gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad", |
101 | sizeof(struct gfs2_quota_data), | |
102 | 0, 0, NULL); | |
103 | if (!gfs2_quotad_cachep) | |
104 | goto fail; | |
105 | ||
0a7ab79c AD |
106 | register_shrinker(&qd_shrinker); |
107 | ||
b3b94faa DT |
108 | error = register_filesystem(&gfs2_fs_type); |
109 | if (error) | |
110 | goto fail; | |
111 | ||
419c93e0 SW |
112 | error = register_filesystem(&gfs2meta_fs_type); |
113 | if (error) | |
114 | goto fail_unregister; | |
115 | ||
7c52b166 RP |
116 | gfs2_register_debugfs(); |
117 | ||
b3b94faa DT |
118 | printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__); |
119 | ||
120 | return 0; | |
121 | ||
419c93e0 SW |
122 | fail_unregister: |
123 | unregister_filesystem(&gfs2_fs_type); | |
124 | fail: | |
0a7ab79c | 125 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 SW |
126 | gfs2_glock_exit(); |
127 | ||
37b2c837 SW |
128 | if (gfs2_quotad_cachep) |
129 | kmem_cache_destroy(gfs2_quotad_cachep); | |
130 | ||
6bdd9be6 BP |
131 | if (gfs2_rgrpd_cachep) |
132 | kmem_cache_destroy(gfs2_rgrpd_cachep); | |
133 | ||
b3b94faa DT |
134 | if (gfs2_bufdata_cachep) |
135 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
136 | ||
137 | if (gfs2_inode_cachep) | |
138 | kmem_cache_destroy(gfs2_inode_cachep); | |
139 | ||
140 | if (gfs2_glock_cachep) | |
141 | kmem_cache_destroy(gfs2_glock_cachep); | |
142 | ||
143 | gfs2_sys_uninit(); | |
144 | return error; | |
145 | } | |
146 | ||
147 | /** | |
148 | * exit_gfs2_fs - Unregister the file system | |
149 | * | |
150 | */ | |
151 | ||
152 | static void __exit exit_gfs2_fs(void) | |
153 | { | |
0a7ab79c | 154 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 | 155 | gfs2_glock_exit(); |
7c52b166 | 156 | gfs2_unregister_debugfs(); |
b3b94faa | 157 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 158 | unregister_filesystem(&gfs2meta_fs_type); |
b3b94faa | 159 | |
37b2c837 | 160 | kmem_cache_destroy(gfs2_quotad_cachep); |
6bdd9be6 | 161 | kmem_cache_destroy(gfs2_rgrpd_cachep); |
b3b94faa DT |
162 | kmem_cache_destroy(gfs2_bufdata_cachep); |
163 | kmem_cache_destroy(gfs2_inode_cachep); | |
164 | kmem_cache_destroy(gfs2_glock_cachep); | |
165 | ||
166 | gfs2_sys_uninit(); | |
167 | } | |
168 | ||
169 | MODULE_DESCRIPTION("Global File System"); | |
170 | MODULE_AUTHOR("Red Hat, Inc."); | |
171 | MODULE_LICENSE("GPL"); | |
172 | ||
173 | module_init(init_gfs2_fs); | |
174 | module_exit(exit_gfs2_fs); | |
175 |