Commit | Line | Data |
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7336d0e6 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b3b94faa DT |
2 | /* |
3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 4 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
5 | */ |
6 | ||
d77d1b58 JP |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
8 | ||
b3b94faa DT |
9 | #include <linux/slab.h> |
10 | #include <linux/spinlock.h> | |
11 | #include <linux/completion.h> | |
12 | #include <linux/buffer_head.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
5c676f6d | 15 | #include <linux/gfs2_ondisk.h> |
bc015cb8 SW |
16 | #include <linux/rcupdate.h> |
17 | #include <linux/rculist_bl.h> | |
60063497 | 18 | #include <linux/atomic.h> |
75ca61c1 | 19 | #include <linux/mempool.h> |
b3b94faa DT |
20 | |
21 | #include "gfs2.h" | |
5c676f6d | 22 | #include "incore.h" |
b2760583 | 23 | #include "super.h" |
b3b94faa | 24 | #include "sys.h" |
5c676f6d | 25 | #include "util.h" |
85d1da67 | 26 | #include "glock.h" |
0a7ab79c | 27 | #include "quota.h" |
6ecd7c2d | 28 | #include "recovery.h" |
8d123585 | 29 | #include "dir.h" |
2e60d768 | 30 | #include "glops.h" |
0a7ab79c | 31 | |
e0c2a9aa DT |
32 | struct workqueue_struct *gfs2_control_wq; |
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); | |
21f09c43 | 39 | atomic_set(&ip->i_sizehint, 0); |
a35afb83 | 40 | init_rwsem(&ip->i_rw_mutex); |
813e0c46 | 41 | INIT_LIST_HEAD(&ip->i_trunc_list); |
b54e9a0b | 42 | ip->i_qadata = NULL; |
21f09c43 | 43 | gfs2_holder_mark_uninitialized(&ip->i_rgd_gh); |
a097dc7e BP |
44 | memset(&ip->i_res, 0, sizeof(ip->i_res)); |
45 | RB_CLEAR_NODE(&ip->i_res.rs_node); | |
17d539f0 | 46 | ip->i_hash_cache = NULL; |
6df9f9a2 | 47 | gfs2_holder_mark_uninitialized(&ip->i_iopen_gh); |
320dd101 SW |
48 | } |
49 | ||
51cc5068 | 50 | static void gfs2_init_glock_once(void *foo) |
ec45d9f5 SW |
51 | { |
52 | struct gfs2_glock *gl = foo; | |
a35afb83 | 53 | |
f3dd1649 | 54 | spin_lock_init(&gl->gl_lockref.lock); |
a35afb83 | 55 | INIT_LIST_HEAD(&gl->gl_holders); |
97cc1025 | 56 | INIT_LIST_HEAD(&gl->gl_lru); |
a35afb83 CL |
57 | INIT_LIST_HEAD(&gl->gl_ail_list); |
58 | atomic_set(&gl->gl_ail_count, 0); | |
638803d4 | 59 | atomic_set(&gl->gl_revokes, 0); |
ec45d9f5 SW |
60 | } |
61 | ||
009d8518 SW |
62 | static void gfs2_init_gl_aspace_once(void *foo) |
63 | { | |
64 | struct gfs2_glock *gl = foo; | |
65 | struct address_space *mapping = (struct address_space *)(gl + 1); | |
66 | ||
67 | gfs2_init_glock_once(gl); | |
2aa15890 | 68 | address_space_init_once(mapping); |
009d8518 SW |
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 | ||
8d123585 SW |
81 | gfs2_str2qstr(&gfs2_qdot, "."); |
82 | gfs2_str2qstr(&gfs2_qdotdot, ".."); | |
c754fbbb | 83 | gfs2_quota_hash_init(); |
8d123585 | 84 | |
b3b94faa DT |
85 | error = gfs2_sys_init(); |
86 | if (error) | |
87 | return error; | |
88 | ||
2147dbfd SW |
89 | error = list_lru_init(&gfs2_qd_lru); |
90 | if (error) | |
91 | goto fail_lru; | |
92 | ||
85d1da67 SW |
93 | error = gfs2_glock_init(); |
94 | if (error) | |
8b0d7f56 | 95 | goto fail_glock; |
b3b94faa | 96 | |
85d1da67 | 97 | error = -ENOMEM; |
b3b94faa DT |
98 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
99 | sizeof(struct gfs2_glock), | |
907b9bce | 100 | 0, 0, |
20c2df83 | 101 | gfs2_init_glock_once); |
b3b94faa | 102 | if (!gfs2_glock_cachep) |
8b0d7f56 | 103 | goto fail_cachep1; |
b3b94faa | 104 | |
7c9a84a5 | 105 | gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)", |
009d8518 SW |
106 | sizeof(struct gfs2_glock) + |
107 | sizeof(struct address_space), | |
108 | 0, 0, gfs2_init_gl_aspace_once); | |
109 | ||
110 | if (!gfs2_glock_aspace_cachep) | |
8b0d7f56 | 111 | goto fail_cachep2; |
009d8518 | 112 | |
b3b94faa DT |
113 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", |
114 | sizeof(struct gfs2_inode), | |
eb1dc33a | 115 | 0, SLAB_RECLAIM_ACCOUNT| |
5d097056 VD |
116 | SLAB_MEM_SPREAD| |
117 | SLAB_ACCOUNT, | |
20c2df83 | 118 | gfs2_init_inode_once); |
b3b94faa | 119 | if (!gfs2_inode_cachep) |
8b0d7f56 | 120 | goto fail_cachep3; |
b3b94faa DT |
121 | |
122 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", | |
123 | sizeof(struct gfs2_bufdata), | |
20c2df83 | 124 | 0, 0, NULL); |
b3b94faa | 125 | if (!gfs2_bufdata_cachep) |
8b0d7f56 | 126 | goto fail_cachep4; |
b3b94faa | 127 | |
6bdd9be6 BP |
128 | gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd", |
129 | sizeof(struct gfs2_rgrpd), | |
130 | 0, 0, NULL); | |
131 | if (!gfs2_rgrpd_cachep) | |
8b0d7f56 | 132 | goto fail_cachep5; |
6bdd9be6 | 133 | |
37b2c837 SW |
134 | gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad", |
135 | sizeof(struct gfs2_quota_data), | |
136 | 0, 0, NULL); | |
137 | if (!gfs2_quotad_cachep) | |
8b0d7f56 | 138 | goto fail_cachep6; |
37b2c837 | 139 | |
b54e9a0b BP |
140 | gfs2_qadata_cachep = kmem_cache_create("gfs2_qadata", |
141 | sizeof(struct gfs2_qadata), | |
142 | 0, 0, NULL); | |
143 | if (!gfs2_qadata_cachep) | |
8b0d7f56 | 144 | goto fail_cachep7; |
b54e9a0b | 145 | |
e0d735c1 CY |
146 | error = register_shrinker(&gfs2_qd_shrinker); |
147 | if (error) | |
8b0d7f56 | 148 | goto fail_shrinker; |
0a7ab79c | 149 | |
b3b94faa DT |
150 | error = register_filesystem(&gfs2_fs_type); |
151 | if (error) | |
8b0d7f56 | 152 | goto fail_fs1; |
b3b94faa | 153 | |
419c93e0 SW |
154 | error = register_filesystem(&gfs2meta_fs_type); |
155 | if (error) | |
8b0d7f56 | 156 | goto fail_fs2; |
419c93e0 | 157 | |
6ecd7c2d TH |
158 | error = -ENOMEM; |
159 | gfs_recovery_wq = alloc_workqueue("gfs_recovery", | |
58a69cb4 | 160 | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0); |
6ecd7c2d | 161 | if (!gfs_recovery_wq) |
8b0d7f56 | 162 | goto fail_wq1; |
fe64d517 | 163 | |
e0c2a9aa | 164 | gfs2_control_wq = alloc_workqueue("gfs2_control", |
d08fa65a | 165 | WQ_UNBOUND | WQ_FREEZABLE, 0); |
e0c2a9aa | 166 | if (!gfs2_control_wq) |
8b0d7f56 | 167 | goto fail_wq2; |
75ca61c1 | 168 | |
2e60d768 BM |
169 | gfs2_freeze_wq = alloc_workqueue("freeze_workqueue", 0, 0); |
170 | ||
171 | if (!gfs2_freeze_wq) | |
8b0d7f56 | 172 | goto fail_wq3; |
2e60d768 | 173 | |
e8c92ed7 SW |
174 | gfs2_page_pool = mempool_create_page_pool(64, 0); |
175 | if (!gfs2_page_pool) | |
8b0d7f56 | 176 | goto fail_mempool; |
e0c2a9aa | 177 | |
2abbf9a4 | 178 | gfs2_register_debugfs(); |
7c52b166 | 179 | |
fc554ed3 | 180 | pr_info("GFS2 installed\n"); |
b3b94faa DT |
181 | |
182 | return 0; | |
183 | ||
8b0d7f56 | 184 | fail_mempool: |
2e60d768 | 185 | destroy_workqueue(gfs2_freeze_wq); |
8b0d7f56 | 186 | fail_wq3: |
75ca61c1 | 187 | destroy_workqueue(gfs2_control_wq); |
8b0d7f56 | 188 | fail_wq2: |
e0c2a9aa | 189 | destroy_workqueue(gfs_recovery_wq); |
8b0d7f56 | 190 | fail_wq1: |
fe64d517 | 191 | unregister_filesystem(&gfs2meta_fs_type); |
8b0d7f56 | 192 | fail_fs2: |
419c93e0 | 193 | unregister_filesystem(&gfs2_fs_type); |
8b0d7f56 | 194 | fail_fs1: |
2147dbfd | 195 | unregister_shrinker(&gfs2_qd_shrinker); |
8b0d7f56 TH |
196 | fail_shrinker: |
197 | kmem_cache_destroy(gfs2_qadata_cachep); | |
198 | fail_cachep7: | |
199 | kmem_cache_destroy(gfs2_quotad_cachep); | |
200 | fail_cachep6: | |
201 | kmem_cache_destroy(gfs2_rgrpd_cachep); | |
202 | fail_cachep5: | |
203 | kmem_cache_destroy(gfs2_bufdata_cachep); | |
204 | fail_cachep4: | |
205 | kmem_cache_destroy(gfs2_inode_cachep); | |
206 | fail_cachep3: | |
207 | kmem_cache_destroy(gfs2_glock_aspace_cachep); | |
208 | fail_cachep2: | |
209 | kmem_cache_destroy(gfs2_glock_cachep); | |
210 | fail_cachep1: | |
8fbbfd21 | 211 | gfs2_glock_exit(); |
8b0d7f56 TH |
212 | fail_glock: |
213 | list_lru_destroy(&gfs2_qd_lru); | |
214 | fail_lru: | |
b3b94faa DT |
215 | gfs2_sys_uninit(); |
216 | return error; | |
217 | } | |
218 | ||
219 | /** | |
220 | * exit_gfs2_fs - Unregister the file system | |
221 | * | |
222 | */ | |
223 | ||
224 | static void __exit exit_gfs2_fs(void) | |
225 | { | |
2147dbfd | 226 | unregister_shrinker(&gfs2_qd_shrinker); |
8fbbfd21 | 227 | gfs2_glock_exit(); |
7c52b166 | 228 | gfs2_unregister_debugfs(); |
b3b94faa | 229 | unregister_filesystem(&gfs2_fs_type); |
419c93e0 | 230 | unregister_filesystem(&gfs2meta_fs_type); |
6ecd7c2d | 231 | destroy_workqueue(gfs_recovery_wq); |
e0c2a9aa | 232 | destroy_workqueue(gfs2_control_wq); |
2e60d768 | 233 | destroy_workqueue(gfs2_freeze_wq); |
2147dbfd | 234 | list_lru_destroy(&gfs2_qd_lru); |
b3b94faa | 235 | |
bc015cb8 SW |
236 | rcu_barrier(); |
237 | ||
e8c92ed7 | 238 | mempool_destroy(gfs2_page_pool); |
b54e9a0b | 239 | kmem_cache_destroy(gfs2_qadata_cachep); |
37b2c837 | 240 | kmem_cache_destroy(gfs2_quotad_cachep); |
6bdd9be6 | 241 | kmem_cache_destroy(gfs2_rgrpd_cachep); |
b3b94faa DT |
242 | kmem_cache_destroy(gfs2_bufdata_cachep); |
243 | kmem_cache_destroy(gfs2_inode_cachep); | |
009d8518 | 244 | kmem_cache_destroy(gfs2_glock_aspace_cachep); |
b3b94faa DT |
245 | kmem_cache_destroy(gfs2_glock_cachep); |
246 | ||
247 | gfs2_sys_uninit(); | |
248 | } | |
249 | ||
250 | MODULE_DESCRIPTION("Global File System"); | |
251 | MODULE_AUTHOR("Red Hat, Inc."); | |
252 | MODULE_LICENSE("GPL"); | |
253 | ||
254 | module_init(init_gfs2_fs); | |
255 | module_exit(exit_gfs2_fs); | |
256 |