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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> |
7d308590 | 17 | #include <linux/lm_interface.h> |
ec45d9f5 | 18 | #include <asm/atomic.h> |
b3b94faa DT |
19 | |
20 | #include "gfs2.h" | |
5c676f6d | 21 | #include "incore.h" |
b3b94faa DT |
22 | #include "ops_fstype.h" |
23 | #include "sys.h" | |
5c676f6d | 24 | #include "util.h" |
85d1da67 | 25 | #include "glock.h" |
b3b94faa | 26 | |
51cc5068 | 27 | static void gfs2_init_inode_once(void *foo) |
320dd101 SW |
28 | { |
29 | struct gfs2_inode *ip = foo; | |
a35afb83 CL |
30 | |
31 | inode_init_once(&ip->i_inode); | |
a35afb83 | 32 | init_rwsem(&ip->i_rw_mutex); |
6dbd8224 | 33 | ip->i_alloc = NULL; |
320dd101 SW |
34 | } |
35 | ||
51cc5068 | 36 | static void gfs2_init_glock_once(void *foo) |
ec45d9f5 SW |
37 | { |
38 | struct gfs2_glock *gl = foo; | |
a35afb83 CL |
39 | |
40 | INIT_HLIST_NODE(&gl->gl_list); | |
41 | spin_lock_init(&gl->gl_spin); | |
42 | INIT_LIST_HEAD(&gl->gl_holders); | |
a35afb83 CL |
43 | gl->gl_lvb = NULL; |
44 | atomic_set(&gl->gl_lvb_count, 0); | |
45 | INIT_LIST_HEAD(&gl->gl_reclaim); | |
46 | INIT_LIST_HEAD(&gl->gl_ail_list); | |
47 | atomic_set(&gl->gl_ail_count, 0); | |
ec45d9f5 SW |
48 | } |
49 | ||
b3b94faa DT |
50 | /** |
51 | * init_gfs2_fs - Register GFS2 as a filesystem | |
52 | * | |
53 | * Returns: 0 on success, error code on failure | |
54 | */ | |
55 | ||
56 | static int __init init_gfs2_fs(void) | |
57 | { | |
58 | int error; | |
59 | ||
b3b94faa DT |
60 | error = gfs2_sys_init(); |
61 | if (error) | |
62 | return error; | |
63 | ||
85d1da67 SW |
64 | error = gfs2_glock_init(); |
65 | if (error) | |
66 | goto fail; | |
b3b94faa | 67 | |
85d1da67 | 68 | error = -ENOMEM; |
b3b94faa DT |
69 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
70 | sizeof(struct gfs2_glock), | |
907b9bce | 71 | 0, 0, |
20c2df83 | 72 | gfs2_init_glock_once); |
b3b94faa DT |
73 | if (!gfs2_glock_cachep) |
74 | goto fail; | |
75 | ||
76 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", | |
77 | sizeof(struct gfs2_inode), | |
eb1dc33a AD |
78 | 0, SLAB_RECLAIM_ACCOUNT| |
79 | SLAB_MEM_SPREAD, | |
20c2df83 | 80 | gfs2_init_inode_once); |
b3b94faa DT |
81 | if (!gfs2_inode_cachep) |
82 | goto fail; | |
83 | ||
84 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
85 | sizeof(struct gfs2_bufdata), | |
20c2df83 | 86 | 0, 0, NULL); |
b3b94faa DT |
87 | if (!gfs2_bufdata_cachep) |
88 | goto fail; | |
89 | ||
6bdd9be6 BP |
90 | gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd", |
91 | sizeof(struct gfs2_rgrpd), | |
92 | 0, 0, NULL); | |
93 | if (!gfs2_rgrpd_cachep) | |
94 | goto fail; | |
95 | ||
b3b94faa DT |
96 | error = register_filesystem(&gfs2_fs_type); |
97 | if (error) | |
98 | goto fail; | |
99 | ||
419c93e0 SW |
100 | error = register_filesystem(&gfs2meta_fs_type); |
101 | if (error) | |
102 | goto fail_unregister; | |
103 | ||
7c52b166 RP |
104 | gfs2_register_debugfs(); |
105 | ||
b3b94faa DT |
106 | printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__); |
107 | ||
108 | return 0; | |
109 | ||
419c93e0 SW |
110 | fail_unregister: |
111 | unregister_filesystem(&gfs2_fs_type); | |
112 | fail: | |
8fbbfd21 SW |
113 | gfs2_glock_exit(); |
114 | ||
6bdd9be6 BP |
115 | if (gfs2_rgrpd_cachep) |
116 | kmem_cache_destroy(gfs2_rgrpd_cachep); | |
117 | ||
b3b94faa DT |
118 | if (gfs2_bufdata_cachep) |
119 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
120 | ||
121 | if (gfs2_inode_cachep) | |
122 | kmem_cache_destroy(gfs2_inode_cachep); | |
123 | ||
124 | if (gfs2_glock_cachep) | |
125 | kmem_cache_destroy(gfs2_glock_cachep); | |
126 | ||
127 | gfs2_sys_uninit(); | |
128 | return error; | |
129 | } | |
130 | ||
131 | /** | |
132 | * exit_gfs2_fs - Unregister the file system | |
133 | * | |
134 | */ | |
135 | ||
136 | static void __exit exit_gfs2_fs(void) | |
137 | { | |
8fbbfd21 | 138 | gfs2_glock_exit(); |
7c52b166 | 139 | gfs2_unregister_debugfs(); |
b3b94faa | 140 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 141 | unregister_filesystem(&gfs2meta_fs_type); |
b3b94faa | 142 | |
6bdd9be6 | 143 | kmem_cache_destroy(gfs2_rgrpd_cachep); |
b3b94faa DT |
144 | kmem_cache_destroy(gfs2_bufdata_cachep); |
145 | kmem_cache_destroy(gfs2_inode_cachep); | |
146 | kmem_cache_destroy(gfs2_glock_cachep); | |
147 | ||
148 | gfs2_sys_uninit(); | |
149 | } | |
150 | ||
151 | MODULE_DESCRIPTION("Global File System"); | |
152 | MODULE_AUTHOR("Red Hat, Inc."); | |
153 | MODULE_LICENSE("GPL"); | |
154 | ||
155 | module_init(init_gfs2_fs); | |
156 | module_exit(exit_gfs2_fs); | |
157 |