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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> |
ec45d9f5 | 17 | #include <asm/atomic.h> |
fe64d517 | 18 | #include <linux/slow-work.h> |
b3b94faa DT |
19 | |
20 | #include "gfs2.h" | |
5c676f6d | 21 | #include "incore.h" |
b2760583 | 22 | #include "super.h" |
b3b94faa | 23 | #include "sys.h" |
5c676f6d | 24 | #include "util.h" |
85d1da67 | 25 | #include "glock.h" |
0a7ab79c AD |
26 | #include "quota.h" |
27 | ||
28 | static struct shrinker qd_shrinker = { | |
29 | .shrink = gfs2_shrink_qd_memory, | |
30 | .seeks = DEFAULT_SEEKS, | |
31 | }; | |
b3b94faa | 32 | |
51cc5068 | 33 | static void gfs2_init_inode_once(void *foo) |
320dd101 SW |
34 | { |
35 | struct gfs2_inode *ip = foo; | |
a35afb83 CL |
36 | |
37 | inode_init_once(&ip->i_inode); | |
a35afb83 | 38 | init_rwsem(&ip->i_rw_mutex); |
813e0c46 | 39 | INIT_LIST_HEAD(&ip->i_trunc_list); |
6dbd8224 | 40 | ip->i_alloc = NULL; |
320dd101 SW |
41 | } |
42 | ||
51cc5068 | 43 | static void gfs2_init_glock_once(void *foo) |
ec45d9f5 SW |
44 | { |
45 | struct gfs2_glock *gl = foo; | |
a35afb83 CL |
46 | |
47 | INIT_HLIST_NODE(&gl->gl_list); | |
48 | spin_lock_init(&gl->gl_spin); | |
49 | INIT_LIST_HEAD(&gl->gl_holders); | |
97cc1025 | 50 | INIT_LIST_HEAD(&gl->gl_lru); |
a35afb83 CL |
51 | INIT_LIST_HEAD(&gl->gl_ail_list); |
52 | atomic_set(&gl->gl_ail_count, 0); | |
ec45d9f5 SW |
53 | } |
54 | ||
009d8518 SW |
55 | static void gfs2_init_gl_aspace_once(void *foo) |
56 | { | |
57 | struct gfs2_glock *gl = foo; | |
58 | struct address_space *mapping = (struct address_space *)(gl + 1); | |
59 | ||
60 | gfs2_init_glock_once(gl); | |
61 | memset(mapping, 0, sizeof(*mapping)); | |
62 | INIT_RADIX_TREE(&mapping->page_tree, GFP_ATOMIC); | |
63 | spin_lock_init(&mapping->tree_lock); | |
64 | spin_lock_init(&mapping->i_mmap_lock); | |
65 | INIT_LIST_HEAD(&mapping->private_list); | |
66 | spin_lock_init(&mapping->private_lock); | |
67 | INIT_RAW_PRIO_TREE_ROOT(&mapping->i_mmap); | |
68 | INIT_LIST_HEAD(&mapping->i_mmap_nonlinear); | |
69 | } | |
70 | ||
b3b94faa DT |
71 | /** |
72 | * init_gfs2_fs - Register GFS2 as a filesystem | |
73 | * | |
74 | * Returns: 0 on success, error code on failure | |
75 | */ | |
76 | ||
77 | static int __init init_gfs2_fs(void) | |
78 | { | |
79 | int error; | |
80 | ||
b3b94faa DT |
81 | error = gfs2_sys_init(); |
82 | if (error) | |
83 | return error; | |
84 | ||
85d1da67 SW |
85 | error = gfs2_glock_init(); |
86 | if (error) | |
87 | goto fail; | |
b3b94faa | 88 | |
85d1da67 | 89 | error = -ENOMEM; |
b3b94faa DT |
90 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
91 | sizeof(struct gfs2_glock), | |
907b9bce | 92 | 0, 0, |
20c2df83 | 93 | gfs2_init_glock_once); |
b3b94faa DT |
94 | if (!gfs2_glock_cachep) |
95 | goto fail; | |
96 | ||
7c9a84a5 | 97 | gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)", |
009d8518 SW |
98 | sizeof(struct gfs2_glock) + |
99 | sizeof(struct address_space), | |
100 | 0, 0, gfs2_init_gl_aspace_once); | |
101 | ||
102 | if (!gfs2_glock_aspace_cachep) | |
103 | goto fail; | |
104 | ||
b3b94faa DT |
105 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", |
106 | sizeof(struct gfs2_inode), | |
eb1dc33a AD |
107 | 0, SLAB_RECLAIM_ACCOUNT| |
108 | SLAB_MEM_SPREAD, | |
20c2df83 | 109 | gfs2_init_inode_once); |
b3b94faa DT |
110 | if (!gfs2_inode_cachep) |
111 | goto fail; | |
112 | ||
113 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
114 | sizeof(struct gfs2_bufdata), | |
20c2df83 | 115 | 0, 0, NULL); |
b3b94faa DT |
116 | if (!gfs2_bufdata_cachep) |
117 | goto fail; | |
118 | ||
6bdd9be6 BP |
119 | gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd", |
120 | sizeof(struct gfs2_rgrpd), | |
121 | 0, 0, NULL); | |
122 | if (!gfs2_rgrpd_cachep) | |
123 | goto fail; | |
124 | ||
37b2c837 SW |
125 | gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad", |
126 | sizeof(struct gfs2_quota_data), | |
127 | 0, 0, NULL); | |
128 | if (!gfs2_quotad_cachep) | |
129 | goto fail; | |
130 | ||
0a7ab79c AD |
131 | register_shrinker(&qd_shrinker); |
132 | ||
b3b94faa DT |
133 | error = register_filesystem(&gfs2_fs_type); |
134 | if (error) | |
135 | goto fail; | |
136 | ||
419c93e0 SW |
137 | error = register_filesystem(&gfs2meta_fs_type); |
138 | if (error) | |
139 | goto fail_unregister; | |
140 | ||
3d7a641e | 141 | error = slow_work_register_user(THIS_MODULE); |
fe64d517 SW |
142 | if (error) |
143 | goto fail_slow; | |
144 | ||
7c52b166 RP |
145 | gfs2_register_debugfs(); |
146 | ||
b3b94faa DT |
147 | printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__); |
148 | ||
149 | return 0; | |
150 | ||
fe64d517 SW |
151 | fail_slow: |
152 | unregister_filesystem(&gfs2meta_fs_type); | |
419c93e0 SW |
153 | fail_unregister: |
154 | unregister_filesystem(&gfs2_fs_type); | |
155 | fail: | |
0a7ab79c | 156 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 SW |
157 | gfs2_glock_exit(); |
158 | ||
37b2c837 SW |
159 | if (gfs2_quotad_cachep) |
160 | kmem_cache_destroy(gfs2_quotad_cachep); | |
161 | ||
6bdd9be6 BP |
162 | if (gfs2_rgrpd_cachep) |
163 | kmem_cache_destroy(gfs2_rgrpd_cachep); | |
164 | ||
b3b94faa DT |
165 | if (gfs2_bufdata_cachep) |
166 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
167 | ||
168 | if (gfs2_inode_cachep) | |
169 | kmem_cache_destroy(gfs2_inode_cachep); | |
170 | ||
009d8518 SW |
171 | if (gfs2_glock_aspace_cachep) |
172 | kmem_cache_destroy(gfs2_glock_aspace_cachep); | |
173 | ||
b3b94faa DT |
174 | if (gfs2_glock_cachep) |
175 | kmem_cache_destroy(gfs2_glock_cachep); | |
176 | ||
177 | gfs2_sys_uninit(); | |
178 | return error; | |
179 | } | |
180 | ||
181 | /** | |
182 | * exit_gfs2_fs - Unregister the file system | |
183 | * | |
184 | */ | |
185 | ||
186 | static void __exit exit_gfs2_fs(void) | |
187 | { | |
0a7ab79c | 188 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 | 189 | gfs2_glock_exit(); |
7c52b166 | 190 | gfs2_unregister_debugfs(); |
b3b94faa | 191 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 192 | unregister_filesystem(&gfs2meta_fs_type); |
3d7a641e | 193 | slow_work_unregister_user(THIS_MODULE); |
b3b94faa | 194 | |
37b2c837 | 195 | kmem_cache_destroy(gfs2_quotad_cachep); |
6bdd9be6 | 196 | kmem_cache_destroy(gfs2_rgrpd_cachep); |
b3b94faa DT |
197 | kmem_cache_destroy(gfs2_bufdata_cachep); |
198 | kmem_cache_destroy(gfs2_inode_cachep); | |
009d8518 | 199 | kmem_cache_destroy(gfs2_glock_aspace_cachep); |
b3b94faa DT |
200 | kmem_cache_destroy(gfs2_glock_cachep); |
201 | ||
202 | gfs2_sys_uninit(); | |
203 | } | |
204 | ||
205 | MODULE_DESCRIPTION("Global File System"); | |
206 | MODULE_AUTHOR("Red Hat, Inc."); | |
207 | MODULE_LICENSE("GPL"); | |
208 | ||
209 | module_init(init_gfs2_fs); | |
210 | module_exit(exit_gfs2_fs); | |
211 |