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> |
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; | |
50953fe9 | 30 | if (flags & SLAB_CTOR_CONSTRUCTOR) { |
320dd101 | 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 | ||
e18b890b | 38 | static void gfs2_init_glock_once(void *foo, struct kmem_cache *cachep, unsigned long flags) |
ec45d9f5 SW |
39 | { |
40 | struct gfs2_glock *gl = foo; | |
50953fe9 | 41 | if (flags & SLAB_CTOR_CONSTRUCTOR) { |
b6397893 | 42 | INIT_HLIST_NODE(&gl->gl_list); |
ec45d9f5 SW |
43 | spin_lock_init(&gl->gl_spin); |
44 | INIT_LIST_HEAD(&gl->gl_holders); | |
45 | INIT_LIST_HEAD(&gl->gl_waiters1); | |
46 | INIT_LIST_HEAD(&gl->gl_waiters2); | |
47 | INIT_LIST_HEAD(&gl->gl_waiters3); | |
48 | gl->gl_lvb = NULL; | |
49 | atomic_set(&gl->gl_lvb_count, 0); | |
50 | INIT_LIST_HEAD(&gl->gl_reclaim); | |
51 | INIT_LIST_HEAD(&gl->gl_ail_list); | |
52 | atomic_set(&gl->gl_ail_count, 0); | |
53 | } | |
54 | } | |
55 | ||
b3b94faa DT |
56 | /** |
57 | * init_gfs2_fs - Register GFS2 as a filesystem | |
58 | * | |
59 | * Returns: 0 on success, error code on failure | |
60 | */ | |
61 | ||
62 | static int __init init_gfs2_fs(void) | |
63 | { | |
64 | int error; | |
65 | ||
b3b94faa DT |
66 | error = gfs2_sys_init(); |
67 | if (error) | |
68 | return error; | |
69 | ||
85d1da67 SW |
70 | error = gfs2_glock_init(); |
71 | if (error) | |
72 | goto fail; | |
b3b94faa | 73 | |
85d1da67 | 74 | error = -ENOMEM; |
b3b94faa DT |
75 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
76 | sizeof(struct gfs2_glock), | |
907b9bce | 77 | 0, 0, |
ec45d9f5 | 78 | gfs2_init_glock_once, NULL); |
b3b94faa DT |
79 | if (!gfs2_glock_cachep) |
80 | goto fail; | |
81 | ||
82 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", | |
83 | sizeof(struct gfs2_inode), | |
eb1dc33a AD |
84 | 0, SLAB_RECLAIM_ACCOUNT| |
85 | SLAB_MEM_SPREAD, | |
320dd101 | 86 | gfs2_init_inode_once, NULL); |
b3b94faa DT |
87 | if (!gfs2_inode_cachep) |
88 | goto fail; | |
89 | ||
90 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
91 | sizeof(struct gfs2_bufdata), | |
92 | 0, 0, NULL, NULL); | |
93 | if (!gfs2_bufdata_cachep) | |
94 | goto fail; | |
95 | ||
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 | ||
b3b94faa DT |
104 | printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__); |
105 | ||
106 | return 0; | |
107 | ||
419c93e0 SW |
108 | fail_unregister: |
109 | unregister_filesystem(&gfs2_fs_type); | |
110 | fail: | |
b3b94faa DT |
111 | if (gfs2_bufdata_cachep) |
112 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
113 | ||
114 | if (gfs2_inode_cachep) | |
115 | kmem_cache_destroy(gfs2_inode_cachep); | |
116 | ||
117 | if (gfs2_glock_cachep) | |
118 | kmem_cache_destroy(gfs2_glock_cachep); | |
119 | ||
120 | gfs2_sys_uninit(); | |
121 | return error; | |
122 | } | |
123 | ||
124 | /** | |
125 | * exit_gfs2_fs - Unregister the file system | |
126 | * | |
127 | */ | |
128 | ||
129 | static void __exit exit_gfs2_fs(void) | |
130 | { | |
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 |