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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 | |
7 | * of the GNU General Public License v.2. | |
8 | */ | |
9 | ||
10 | #include <linux/sched.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/init.h> | |
5c676f6d | 17 | #include <linux/gfs2_ondisk.h> |
b3b94faa DT |
18 | |
19 | #include "gfs2.h" | |
5c676f6d SW |
20 | #include "lm_interface.h" |
21 | #include "incore.h" | |
b3b94faa DT |
22 | #include "ops_fstype.h" |
23 | #include "sys.h" | |
5c676f6d | 24 | #include "util.h" |
b3b94faa | 25 | |
320dd101 SW |
26 | static void gfs2_init_inode_once(void *foo, kmem_cache_t *cachep, unsigned long flags) |
27 | { | |
28 | struct gfs2_inode *ip = foo; | |
29 | if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == | |
30 | SLAB_CTOR_CONSTRUCTOR) { | |
31 | inode_init_once(&ip->i_inode); | |
320dd101 SW |
32 | spin_lock_init(&ip->i_spin); |
33 | init_rwsem(&ip->i_rw_mutex); | |
34 | memset(ip->i_cache, 0, sizeof(ip->i_cache)); | |
35 | } | |
36 | } | |
37 | ||
b3b94faa DT |
38 | /** |
39 | * init_gfs2_fs - Register GFS2 as a filesystem | |
40 | * | |
41 | * Returns: 0 on success, error code on failure | |
42 | */ | |
43 | ||
44 | static int __init init_gfs2_fs(void) | |
45 | { | |
46 | int error; | |
47 | ||
48 | gfs2_init_lmh(); | |
49 | ||
50 | error = gfs2_sys_init(); | |
51 | if (error) | |
52 | return error; | |
53 | ||
54 | error = -ENOMEM; | |
55 | ||
56 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", | |
57 | sizeof(struct gfs2_glock), | |
58 | 0, 0, NULL, NULL); | |
59 | if (!gfs2_glock_cachep) | |
60 | goto fail; | |
61 | ||
62 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", | |
63 | sizeof(struct gfs2_inode), | |
320dd101 SW |
64 | 0, (SLAB_RECLAIM_ACCOUNT| |
65 | SLAB_PANIC|SLAB_MEM_SPREAD), | |
66 | gfs2_init_inode_once, NULL); | |
b3b94faa DT |
67 | if (!gfs2_inode_cachep) |
68 | goto fail; | |
69 | ||
70 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
71 | sizeof(struct gfs2_bufdata), | |
72 | 0, 0, NULL, NULL); | |
73 | if (!gfs2_bufdata_cachep) | |
74 | goto fail; | |
75 | ||
76 | error = register_filesystem(&gfs2_fs_type); | |
77 | if (error) | |
78 | goto fail; | |
79 | ||
419c93e0 SW |
80 | error = register_filesystem(&gfs2meta_fs_type); |
81 | if (error) | |
82 | goto fail_unregister; | |
83 | ||
b3b94faa DT |
84 | printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__); |
85 | ||
86 | return 0; | |
87 | ||
419c93e0 SW |
88 | fail_unregister: |
89 | unregister_filesystem(&gfs2_fs_type); | |
90 | fail: | |
b3b94faa DT |
91 | if (gfs2_bufdata_cachep) |
92 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
93 | ||
94 | if (gfs2_inode_cachep) | |
95 | kmem_cache_destroy(gfs2_inode_cachep); | |
96 | ||
97 | if (gfs2_glock_cachep) | |
98 | kmem_cache_destroy(gfs2_glock_cachep); | |
99 | ||
100 | gfs2_sys_uninit(); | |
101 | return error; | |
102 | } | |
103 | ||
104 | /** | |
105 | * exit_gfs2_fs - Unregister the file system | |
106 | * | |
107 | */ | |
108 | ||
109 | static void __exit exit_gfs2_fs(void) | |
110 | { | |
111 | unregister_filesystem(&gfs2_fs_type); | |
419c93e0 | 112 | unregister_filesystem(&gfs2meta_fs_type); |
b3b94faa DT |
113 | |
114 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
115 | kmem_cache_destroy(gfs2_inode_cachep); | |
116 | kmem_cache_destroy(gfs2_glock_cachep); | |
117 | ||
118 | gfs2_sys_uninit(); | |
119 | } | |
120 | ||
121 | MODULE_DESCRIPTION("Global File System"); | |
122 | MODULE_AUTHOR("Red Hat, Inc."); | |
123 | MODULE_LICENSE("GPL"); | |
124 | ||
125 | module_init(init_gfs2_fs); | |
126 | module_exit(exit_gfs2_fs); | |
127 |