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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 | |
e18b890b | 27 | static void gfs2_init_inode_once(void *foo, struct kmem_cache *cachep, unsigned long flags) |
320dd101 SW |
28 | { |
29 | struct gfs2_inode *ip = foo; | |
a35afb83 CL |
30 | |
31 | inode_init_once(&ip->i_inode); | |
32 | spin_lock_init(&ip->i_spin); | |
33 | init_rwsem(&ip->i_rw_mutex); | |
34 | memset(ip->i_cache, 0, sizeof(ip->i_cache)); | |
320dd101 SW |
35 | } |
36 | ||
e18b890b | 37 | static void gfs2_init_glock_once(void *foo, struct kmem_cache *cachep, unsigned long flags) |
ec45d9f5 SW |
38 | { |
39 | struct gfs2_glock *gl = foo; | |
a35afb83 CL |
40 | |
41 | INIT_HLIST_NODE(&gl->gl_list); | |
42 | spin_lock_init(&gl->gl_spin); | |
43 | INIT_LIST_HEAD(&gl->gl_holders); | |
44 | INIT_LIST_HEAD(&gl->gl_waiters1); | |
45 | INIT_LIST_HEAD(&gl->gl_waiters3); | |
46 | gl->gl_lvb = NULL; | |
47 | atomic_set(&gl->gl_lvb_count, 0); | |
48 | INIT_LIST_HEAD(&gl->gl_reclaim); | |
49 | INIT_LIST_HEAD(&gl->gl_ail_list); | |
50 | atomic_set(&gl->gl_ail_count, 0); | |
ec45d9f5 SW |
51 | } |
52 | ||
b3b94faa DT |
53 | /** |
54 | * init_gfs2_fs - Register GFS2 as a filesystem | |
55 | * | |
56 | * Returns: 0 on success, error code on failure | |
57 | */ | |
58 | ||
59 | static int __init init_gfs2_fs(void) | |
60 | { | |
61 | int error; | |
62 | ||
b3b94faa DT |
63 | error = gfs2_sys_init(); |
64 | if (error) | |
65 | return error; | |
66 | ||
85d1da67 SW |
67 | error = gfs2_glock_init(); |
68 | if (error) | |
69 | goto fail; | |
b3b94faa | 70 | |
85d1da67 | 71 | error = -ENOMEM; |
b3b94faa DT |
72 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
73 | sizeof(struct gfs2_glock), | |
907b9bce | 74 | 0, 0, |
ec45d9f5 | 75 | gfs2_init_glock_once, NULL); |
b3b94faa DT |
76 | if (!gfs2_glock_cachep) |
77 | goto fail; | |
78 | ||
79 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", | |
80 | sizeof(struct gfs2_inode), | |
eb1dc33a AD |
81 | 0, SLAB_RECLAIM_ACCOUNT| |
82 | SLAB_MEM_SPREAD, | |
320dd101 | 83 | gfs2_init_inode_once, NULL); |
b3b94faa DT |
84 | if (!gfs2_inode_cachep) |
85 | goto fail; | |
86 | ||
87 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
88 | sizeof(struct gfs2_bufdata), | |
89 | 0, 0, NULL, NULL); | |
90 | if (!gfs2_bufdata_cachep) | |
91 | goto fail; | |
92 | ||
93 | error = register_filesystem(&gfs2_fs_type); | |
94 | if (error) | |
95 | goto fail; | |
96 | ||
419c93e0 SW |
97 | error = register_filesystem(&gfs2meta_fs_type); |
98 | if (error) | |
99 | goto fail_unregister; | |
100 | ||
7c52b166 RP |
101 | gfs2_register_debugfs(); |
102 | ||
b3b94faa DT |
103 | printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__); |
104 | ||
105 | return 0; | |
106 | ||
419c93e0 SW |
107 | fail_unregister: |
108 | unregister_filesystem(&gfs2_fs_type); | |
109 | fail: | |
b3b94faa DT |
110 | if (gfs2_bufdata_cachep) |
111 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
112 | ||
113 | if (gfs2_inode_cachep) | |
114 | kmem_cache_destroy(gfs2_inode_cachep); | |
115 | ||
116 | if (gfs2_glock_cachep) | |
117 | kmem_cache_destroy(gfs2_glock_cachep); | |
118 | ||
119 | gfs2_sys_uninit(); | |
120 | return error; | |
121 | } | |
122 | ||
123 | /** | |
124 | * exit_gfs2_fs - Unregister the file system | |
125 | * | |
126 | */ | |
127 | ||
128 | static void __exit exit_gfs2_fs(void) | |
129 | { | |
7c52b166 | 130 | gfs2_unregister_debugfs(); |
b3b94faa | 131 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 132 | unregister_filesystem(&gfs2meta_fs_type); |
b3b94faa DT |
133 | |
134 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
135 | kmem_cache_destroy(gfs2_inode_cachep); | |
136 | kmem_cache_destroy(gfs2_glock_cachep); | |
137 | ||
138 | gfs2_sys_uninit(); | |
139 | } | |
140 | ||
141 | MODULE_DESCRIPTION("Global File System"); | |
142 | MODULE_AUTHOR("Red Hat, Inc."); | |
143 | MODULE_LICENSE("GPL"); | |
144 | ||
145 | module_init(init_gfs2_fs); | |
146 | module_exit(exit_gfs2_fs); | |
147 |