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> |
ec45d9f5 | 17 | #include <asm/atomic.h> |
b3b94faa DT |
18 | |
19 | #include "gfs2.h" | |
5c676f6d | 20 | #include "incore.h" |
b2760583 | 21 | #include "super.h" |
b3b94faa | 22 | #include "sys.h" |
5c676f6d | 23 | #include "util.h" |
85d1da67 | 24 | #include "glock.h" |
0a7ab79c | 25 | #include "quota.h" |
6ecd7c2d | 26 | #include "recovery.h" |
8d123585 | 27 | #include "dir.h" |
0a7ab79c AD |
28 | |
29 | static struct shrinker qd_shrinker = { | |
30 | .shrink = gfs2_shrink_qd_memory, | |
31 | .seeks = DEFAULT_SEEKS, | |
32 | }; | |
b3b94faa | 33 | |
51cc5068 | 34 | static void gfs2_init_inode_once(void *foo) |
320dd101 SW |
35 | { |
36 | struct gfs2_inode *ip = foo; | |
a35afb83 CL |
37 | |
38 | inode_init_once(&ip->i_inode); | |
a35afb83 | 39 | init_rwsem(&ip->i_rw_mutex); |
813e0c46 | 40 | INIT_LIST_HEAD(&ip->i_trunc_list); |
6dbd8224 | 41 | ip->i_alloc = NULL; |
320dd101 SW |
42 | } |
43 | ||
51cc5068 | 44 | static void gfs2_init_glock_once(void *foo) |
ec45d9f5 SW |
45 | { |
46 | struct gfs2_glock *gl = foo; | |
a35afb83 CL |
47 | |
48 | INIT_HLIST_NODE(&gl->gl_list); | |
49 | spin_lock_init(&gl->gl_spin); | |
50 | INIT_LIST_HEAD(&gl->gl_holders); | |
97cc1025 | 51 | INIT_LIST_HEAD(&gl->gl_lru); |
a35afb83 CL |
52 | INIT_LIST_HEAD(&gl->gl_ail_list); |
53 | atomic_set(&gl->gl_ail_count, 0); | |
ec45d9f5 SW |
54 | } |
55 | ||
009d8518 SW |
56 | static void gfs2_init_gl_aspace_once(void *foo) |
57 | { | |
58 | struct gfs2_glock *gl = foo; | |
59 | struct address_space *mapping = (struct address_space *)(gl + 1); | |
60 | ||
61 | gfs2_init_glock_once(gl); | |
62 | memset(mapping, 0, sizeof(*mapping)); | |
63 | INIT_RADIX_TREE(&mapping->page_tree, GFP_ATOMIC); | |
64 | spin_lock_init(&mapping->tree_lock); | |
65 | spin_lock_init(&mapping->i_mmap_lock); | |
66 | INIT_LIST_HEAD(&mapping->private_list); | |
67 | spin_lock_init(&mapping->private_lock); | |
68 | INIT_RAW_PRIO_TREE_ROOT(&mapping->i_mmap); | |
69 | INIT_LIST_HEAD(&mapping->i_mmap_nonlinear); | |
70 | } | |
71 | ||
b3b94faa DT |
72 | /** |
73 | * init_gfs2_fs - Register GFS2 as a filesystem | |
74 | * | |
75 | * Returns: 0 on success, error code on failure | |
76 | */ | |
77 | ||
78 | static int __init init_gfs2_fs(void) | |
79 | { | |
80 | int error; | |
81 | ||
8d123585 SW |
82 | gfs2_str2qstr(&gfs2_qdot, "."); |
83 | gfs2_str2qstr(&gfs2_qdotdot, ".."); | |
84 | ||
b3b94faa DT |
85 | error = gfs2_sys_init(); |
86 | if (error) | |
87 | return error; | |
88 | ||
85d1da67 SW |
89 | error = gfs2_glock_init(); |
90 | if (error) | |
91 | goto fail; | |
b3b94faa | 92 | |
85d1da67 | 93 | error = -ENOMEM; |
b3b94faa DT |
94 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
95 | sizeof(struct gfs2_glock), | |
907b9bce | 96 | 0, 0, |
20c2df83 | 97 | gfs2_init_glock_once); |
b3b94faa DT |
98 | if (!gfs2_glock_cachep) |
99 | goto fail; | |
100 | ||
7c9a84a5 | 101 | gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)", |
009d8518 SW |
102 | sizeof(struct gfs2_glock) + |
103 | sizeof(struct address_space), | |
104 | 0, 0, gfs2_init_gl_aspace_once); | |
105 | ||
106 | if (!gfs2_glock_aspace_cachep) | |
107 | goto fail; | |
108 | ||
b3b94faa DT |
109 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", |
110 | sizeof(struct gfs2_inode), | |
eb1dc33a AD |
111 | 0, SLAB_RECLAIM_ACCOUNT| |
112 | SLAB_MEM_SPREAD, | |
20c2df83 | 113 | gfs2_init_inode_once); |
b3b94faa DT |
114 | if (!gfs2_inode_cachep) |
115 | goto fail; | |
116 | ||
117 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
118 | sizeof(struct gfs2_bufdata), | |
20c2df83 | 119 | 0, 0, NULL); |
b3b94faa DT |
120 | if (!gfs2_bufdata_cachep) |
121 | goto fail; | |
122 | ||
6bdd9be6 BP |
123 | gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd", |
124 | sizeof(struct gfs2_rgrpd), | |
125 | 0, 0, NULL); | |
126 | if (!gfs2_rgrpd_cachep) | |
127 | goto fail; | |
128 | ||
37b2c837 SW |
129 | gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad", |
130 | sizeof(struct gfs2_quota_data), | |
131 | 0, 0, NULL); | |
132 | if (!gfs2_quotad_cachep) | |
133 | goto fail; | |
134 | ||
0a7ab79c AD |
135 | register_shrinker(&qd_shrinker); |
136 | ||
b3b94faa DT |
137 | error = register_filesystem(&gfs2_fs_type); |
138 | if (error) | |
139 | goto fail; | |
140 | ||
419c93e0 SW |
141 | error = register_filesystem(&gfs2meta_fs_type); |
142 | if (error) | |
143 | goto fail_unregister; | |
144 | ||
6ecd7c2d TH |
145 | error = -ENOMEM; |
146 | gfs_recovery_wq = alloc_workqueue("gfs_recovery", | |
9fa0ea9f | 147 | WQ_RESCUER | WQ_FREEZEABLE, 0); |
6ecd7c2d TH |
148 | if (!gfs_recovery_wq) |
149 | goto fail_wq; | |
fe64d517 | 150 | |
7c52b166 RP |
151 | gfs2_register_debugfs(); |
152 | ||
b3b94faa DT |
153 | printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__); |
154 | ||
155 | return 0; | |
156 | ||
6ecd7c2d | 157 | fail_wq: |
fe64d517 | 158 | unregister_filesystem(&gfs2meta_fs_type); |
419c93e0 SW |
159 | fail_unregister: |
160 | unregister_filesystem(&gfs2_fs_type); | |
161 | fail: | |
0a7ab79c | 162 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 SW |
163 | gfs2_glock_exit(); |
164 | ||
37b2c837 SW |
165 | if (gfs2_quotad_cachep) |
166 | kmem_cache_destroy(gfs2_quotad_cachep); | |
167 | ||
6bdd9be6 BP |
168 | if (gfs2_rgrpd_cachep) |
169 | kmem_cache_destroy(gfs2_rgrpd_cachep); | |
170 | ||
b3b94faa DT |
171 | if (gfs2_bufdata_cachep) |
172 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
173 | ||
174 | if (gfs2_inode_cachep) | |
175 | kmem_cache_destroy(gfs2_inode_cachep); | |
176 | ||
009d8518 SW |
177 | if (gfs2_glock_aspace_cachep) |
178 | kmem_cache_destroy(gfs2_glock_aspace_cachep); | |
179 | ||
b3b94faa DT |
180 | if (gfs2_glock_cachep) |
181 | kmem_cache_destroy(gfs2_glock_cachep); | |
182 | ||
183 | gfs2_sys_uninit(); | |
184 | return error; | |
185 | } | |
186 | ||
187 | /** | |
188 | * exit_gfs2_fs - Unregister the file system | |
189 | * | |
190 | */ | |
191 | ||
192 | static void __exit exit_gfs2_fs(void) | |
193 | { | |
0a7ab79c | 194 | unregister_shrinker(&qd_shrinker); |
8fbbfd21 | 195 | gfs2_glock_exit(); |
7c52b166 | 196 | gfs2_unregister_debugfs(); |
b3b94faa | 197 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 198 | unregister_filesystem(&gfs2meta_fs_type); |
6ecd7c2d | 199 | destroy_workqueue(gfs_recovery_wq); |
b3b94faa | 200 | |
37b2c837 | 201 | kmem_cache_destroy(gfs2_quotad_cachep); |
6bdd9be6 | 202 | kmem_cache_destroy(gfs2_rgrpd_cachep); |
b3b94faa DT |
203 | kmem_cache_destroy(gfs2_bufdata_cachep); |
204 | kmem_cache_destroy(gfs2_inode_cachep); | |
009d8518 | 205 | kmem_cache_destroy(gfs2_glock_aspace_cachep); |
b3b94faa DT |
206 | kmem_cache_destroy(gfs2_glock_cachep); |
207 | ||
208 | gfs2_sys_uninit(); | |
209 | } | |
210 | ||
211 | MODULE_DESCRIPTION("Global File System"); | |
212 | MODULE_AUTHOR("Red Hat, Inc."); | |
213 | MODULE_LICENSE("GPL"); | |
214 | ||
215 | module_init(init_gfs2_fs); | |
216 | module_exit(exit_gfs2_fs); | |
217 |