blob: f99f8e94de3f3a65ff53839a282a160fa2ac41b2 [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Steven Whitehouse3a8a9a12006-05-18 15:09:15 -04003 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +00004 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -04007 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +00008 */
9
Joe Perchesd77d1b52014-03-06 12:10:45 -080010#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11
David Teiglandb3b94fa2006-01-16 16:50:04 +000012#include <linux/slab.h>
13#include <linux/spinlock.h>
14#include <linux/completion.h>
15#include <linux/buffer_head.h>
16#include <linux/module.h>
17#include <linux/init.h>
Steven Whitehouse5c676f62006-02-27 17:23:27 -050018#include <linux/gfs2_ondisk.h>
Steven Whitehousebc015cb2011-01-19 09:30:01 +000019#include <linux/rcupdate.h>
20#include <linux/rculist_bl.h>
Arun Sharma600634972011-07-26 16:09:06 -070021#include <linux/atomic.h>
Steven Whitehouse75ca61c2012-03-08 12:10:23 +000022#include <linux/mempool.h>
David Teiglandb3b94fa2006-01-16 16:50:04 +000023
24#include "gfs2.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050025#include "incore.h"
Steven Whitehouseb2760582008-10-14 16:05:55 +010026#include "super.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000027#include "sys.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050028#include "util.h"
Steven Whitehouse85d1da62006-09-07 14:40:21 -040029#include "glock.h"
Abhijith Das0a7ab792009-01-07 16:03:37 -060030#include "quota.h"
Tejun Heo6ecd7c22010-07-20 22:09:02 +020031#include "recovery.h"
Steven Whitehouse8d123582010-09-17 12:30:23 +010032#include "dir.h"
Benjamin Marzinski2e60d762014-11-13 20:42:04 -060033#include "glops.h"
Abhijith Das0a7ab792009-01-07 16:03:37 -060034
David Teiglande0c2a9a2012-01-09 17:18:05 -050035struct workqueue_struct *gfs2_control_wq;
36
Alexey Dobriyan51cc5062008-07-25 19:45:34 -070037static void gfs2_init_inode_once(void *foo)
Steven Whitehouse320dd102006-05-18 16:25:27 -040038{
39 struct gfs2_inode *ip = foo;
Christoph Lametera35afb82007-05-16 22:10:57 -070040
41 inode_init_once(&ip->i_inode);
Christoph Lametera35afb82007-05-16 22:10:57 -070042 init_rwsem(&ip->i_rw_mutex);
Steven Whitehouse813e0c42008-11-18 13:38:48 +000043 INIT_LIST_HEAD(&ip->i_trunc_list);
Bob Petersonb54e9a02015-10-26 10:40:28 -050044 ip->i_qadata = NULL;
Bob Petersona097dc7e2015-07-16 08:28:04 -050045 memset(&ip->i_res, 0, sizeof(ip->i_res));
46 RB_CLEAR_NODE(&ip->i_res.rs_node);
Steven Whitehouse17d539f2011-06-15 10:29:37 +010047 ip->i_hash_cache = NULL;
Steven Whitehouse320dd102006-05-18 16:25:27 -040048}
49
Alexey Dobriyan51cc5062008-07-25 19:45:34 -070050static void gfs2_init_glock_once(void *foo)
Steven Whitehouseec45d9f2006-08-30 10:36:52 -040051{
52 struct gfs2_glock *gl = foo;
Christoph Lametera35afb82007-05-16 22:10:57 -070053
Steven Whitehousebc015cb2011-01-19 09:30:01 +000054 INIT_HLIST_BL_NODE(&gl->gl_list);
Andreas Gruenbacherf3dd1642015-10-29 10:58:09 -050055 spin_lock_init(&gl->gl_lockref.lock);
Christoph Lametera35afb82007-05-16 22:10:57 -070056 INIT_LIST_HEAD(&gl->gl_holders);
Steven Whitehouse97cc1022008-11-20 13:39:47 +000057 INIT_LIST_HEAD(&gl->gl_lru);
Christoph Lametera35afb82007-05-16 22:10:57 -070058 INIT_LIST_HEAD(&gl->gl_ail_list);
59 atomic_set(&gl->gl_ail_count, 0);
Steven Whitehousef42ab082011-04-14 16:50:31 +010060 atomic_set(&gl->gl_revokes, 0);
Steven Whitehouseec45d9f2006-08-30 10:36:52 -040061}
62
Steven Whitehouse009d8512009-12-08 12:12:13 +000063static void gfs2_init_gl_aspace_once(void *foo)
64{
65 struct gfs2_glock *gl = foo;
66 struct address_space *mapping = (struct address_space *)(gl + 1);
67
68 gfs2_init_glock_once(gl);
Miklos Szeredi2aa15892011-02-23 13:49:47 +010069 address_space_init_once(mapping);
Steven Whitehouse009d8512009-12-08 12:12:13 +000070}
71
David Teiglandb3b94fa2006-01-16 16:50:04 +000072/**
73 * init_gfs2_fs - Register GFS2 as a filesystem
74 *
75 * Returns: 0 on success, error code on failure
76 */
77
78static int __init init_gfs2_fs(void)
79{
80 int error;
81
Steven Whitehouse8d123582010-09-17 12:30:23 +010082 gfs2_str2qstr(&gfs2_qdot, ".");
83 gfs2_str2qstr(&gfs2_qdotdot, "..");
Steven Whitehousec754fbb2013-12-12 10:47:59 +000084 gfs2_quota_hash_init();
Steven Whitehouse8d123582010-09-17 12:30:23 +010085
David Teiglandb3b94fa2006-01-16 16:50:04 +000086 error = gfs2_sys_init();
87 if (error)
88 return error;
89
Steven Whitehouse2147dbf2013-11-04 10:15:08 +000090 error = list_lru_init(&gfs2_qd_lru);
91 if (error)
92 goto fail_lru;
93
Steven Whitehouse85d1da62006-09-07 14:40:21 -040094 error = gfs2_glock_init();
95 if (error)
96 goto fail;
David Teiglandb3b94fa2006-01-16 16:50:04 +000097
Steven Whitehouse85d1da62006-09-07 14:40:21 -040098 error = -ENOMEM;
David Teiglandb3b94fa2006-01-16 16:50:04 +000099 gfs2_glock_cachep = kmem_cache_create("gfs2_glock",
100 sizeof(struct gfs2_glock),
Steven Whitehouse907b9bc2006-09-25 09:26:04 -0400101 0, 0,
Paul Mundt20c2df82007-07-20 10:11:58 +0900102 gfs2_init_glock_once);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000103 if (!gfs2_glock_cachep)
104 goto fail;
105
Steven Whitehouse7c9a84a2010-03-12 17:05:31 +0000106 gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)",
Steven Whitehouse009d8512009-12-08 12:12:13 +0000107 sizeof(struct gfs2_glock) +
108 sizeof(struct address_space),
109 0, 0, gfs2_init_gl_aspace_once);
110
111 if (!gfs2_glock_aspace_cachep)
112 goto fail;
113
David Teiglandb3b94fa2006-01-16 16:50:04 +0000114 gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
115 sizeof(struct gfs2_inode),
Alexey Dobriyaneb1dc332006-10-28 03:03:48 +0400116 0, SLAB_RECLAIM_ACCOUNT|
Vladimir Davydov5d097052016-01-14 15:18:21 -0800117 SLAB_MEM_SPREAD|
118 SLAB_ACCOUNT,
Paul Mundt20c2df82007-07-20 10:11:58 +0900119 gfs2_init_inode_once);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000120 if (!gfs2_inode_cachep)
121 goto fail;
122
123 gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata",
124 sizeof(struct gfs2_bufdata),
Paul Mundt20c2df82007-07-20 10:11:58 +0900125 0, 0, NULL);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000126 if (!gfs2_bufdata_cachep)
127 goto fail;
128
Bob Peterson6bdd9be2008-01-28 17:20:26 -0600129 gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd",
130 sizeof(struct gfs2_rgrpd),
131 0, 0, NULL);
132 if (!gfs2_rgrpd_cachep)
133 goto fail;
134
Steven Whitehouse37b2c832008-11-17 14:25:37 +0000135 gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad",
136 sizeof(struct gfs2_quota_data),
137 0, 0, NULL);
138 if (!gfs2_quotad_cachep)
139 goto fail;
140
Bob Petersonb54e9a02015-10-26 10:40:28 -0500141 gfs2_qadata_cachep = kmem_cache_create("gfs2_qadata",
142 sizeof(struct gfs2_qadata),
143 0, 0, NULL);
144 if (!gfs2_qadata_cachep)
145 goto fail;
146
Steven Whitehouse2147dbf2013-11-04 10:15:08 +0000147 register_shrinker(&gfs2_qd_shrinker);
Abhijith Das0a7ab792009-01-07 16:03:37 -0600148
David Teiglandb3b94fa2006-01-16 16:50:04 +0000149 error = register_filesystem(&gfs2_fs_type);
150 if (error)
151 goto fail;
152
Steven Whitehouse419c93e2006-03-02 16:33:41 -0500153 error = register_filesystem(&gfs2meta_fs_type);
154 if (error)
155 goto fail_unregister;
156
Tejun Heo6ecd7c22010-07-20 22:09:02 +0200157 error = -ENOMEM;
158 gfs_recovery_wq = alloc_workqueue("gfs_recovery",
Tejun Heo58a69cb2011-02-16 09:25:31 +0100159 WQ_MEM_RECLAIM | WQ_FREEZABLE, 0);
Tejun Heo6ecd7c22010-07-20 22:09:02 +0200160 if (!gfs_recovery_wq)
161 goto fail_wq;
Steven Whitehousefe64d512009-05-19 10:01:18 +0100162
David Teiglande0c2a9a2012-01-09 17:18:05 -0500163 gfs2_control_wq = alloc_workqueue("gfs2_control",
Tejun Heod08fa652013-07-30 08:40:25 -0400164 WQ_UNBOUND | WQ_FREEZABLE, 0);
David Teiglande0c2a9a2012-01-09 17:18:05 -0500165 if (!gfs2_control_wq)
Steven Whitehouse75ca61c2012-03-08 12:10:23 +0000166 goto fail_recovery;
167
Benjamin Marzinski2e60d762014-11-13 20:42:04 -0600168 gfs2_freeze_wq = alloc_workqueue("freeze_workqueue", 0, 0);
169
170 if (!gfs2_freeze_wq)
171 goto fail_control;
172
Steven Whitehousee8c92ed2012-04-16 09:28:31 +0100173 gfs2_page_pool = mempool_create_page_pool(64, 0);
174 if (!gfs2_page_pool)
Benjamin Marzinski2e60d762014-11-13 20:42:04 -0600175 goto fail_freeze;
David Teiglande0c2a9a2012-01-09 17:18:05 -0500176
Robert Peterson7c52b162007-03-16 10:26:37 +0000177 gfs2_register_debugfs();
178
Fabian Frederickfc554ed2014-03-05 22:06:42 +0800179 pr_info("GFS2 installed\n");
David Teiglandb3b94fa2006-01-16 16:50:04 +0000180
181 return 0;
182
Benjamin Marzinski2e60d762014-11-13 20:42:04 -0600183fail_freeze:
184 destroy_workqueue(gfs2_freeze_wq);
David Teiglande0c2a9a2012-01-09 17:18:05 -0500185fail_control:
Steven Whitehouse75ca61c2012-03-08 12:10:23 +0000186 destroy_workqueue(gfs2_control_wq);
187fail_recovery:
David Teiglande0c2a9a2012-01-09 17:18:05 -0500188 destroy_workqueue(gfs_recovery_wq);
Tejun Heo6ecd7c22010-07-20 22:09:02 +0200189fail_wq:
Steven Whitehousefe64d512009-05-19 10:01:18 +0100190 unregister_filesystem(&gfs2meta_fs_type);
Steven Whitehouse419c93e2006-03-02 16:33:41 -0500191fail_unregister:
192 unregister_filesystem(&gfs2_fs_type);
193fail:
Steven Whitehouse2147dbf2013-11-04 10:15:08 +0000194 list_lru_destroy(&gfs2_qd_lru);
195fail_lru:
196 unregister_shrinker(&gfs2_qd_shrinker);
Steven Whitehouse8fbbfd22007-08-01 13:57:10 +0100197 gfs2_glock_exit();
198
Bob Petersonb54e9a02015-10-26 10:40:28 -0500199 if (gfs2_qadata_cachep)
200 kmem_cache_destroy(gfs2_qadata_cachep);
201
Steven Whitehouse37b2c832008-11-17 14:25:37 +0000202 if (gfs2_quotad_cachep)
203 kmem_cache_destroy(gfs2_quotad_cachep);
204
Bob Peterson6bdd9be2008-01-28 17:20:26 -0600205 if (gfs2_rgrpd_cachep)
206 kmem_cache_destroy(gfs2_rgrpd_cachep);
207
David Teiglandb3b94fa2006-01-16 16:50:04 +0000208 if (gfs2_bufdata_cachep)
209 kmem_cache_destroy(gfs2_bufdata_cachep);
210
211 if (gfs2_inode_cachep)
212 kmem_cache_destroy(gfs2_inode_cachep);
213
Steven Whitehouse009d8512009-12-08 12:12:13 +0000214 if (gfs2_glock_aspace_cachep)
215 kmem_cache_destroy(gfs2_glock_aspace_cachep);
216
David Teiglandb3b94fa2006-01-16 16:50:04 +0000217 if (gfs2_glock_cachep)
218 kmem_cache_destroy(gfs2_glock_cachep);
219
220 gfs2_sys_uninit();
221 return error;
222}
223
224/**
225 * exit_gfs2_fs - Unregister the file system
226 *
227 */
228
229static void __exit exit_gfs2_fs(void)
230{
Steven Whitehouse2147dbf2013-11-04 10:15:08 +0000231 unregister_shrinker(&gfs2_qd_shrinker);
Steven Whitehouse8fbbfd22007-08-01 13:57:10 +0100232 gfs2_glock_exit();
Robert Peterson7c52b162007-03-16 10:26:37 +0000233 gfs2_unregister_debugfs();
David Teiglandb3b94fa2006-01-16 16:50:04 +0000234 unregister_filesystem(&gfs2_fs_type);
Steven Whitehouse419c93e2006-03-02 16:33:41 -0500235 unregister_filesystem(&gfs2meta_fs_type);
Tejun Heo6ecd7c22010-07-20 22:09:02 +0200236 destroy_workqueue(gfs_recovery_wq);
David Teiglande0c2a9a2012-01-09 17:18:05 -0500237 destroy_workqueue(gfs2_control_wq);
Benjamin Marzinski2e60d762014-11-13 20:42:04 -0600238 destroy_workqueue(gfs2_freeze_wq);
Steven Whitehouse2147dbf2013-11-04 10:15:08 +0000239 list_lru_destroy(&gfs2_qd_lru);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000240
Steven Whitehousebc015cb2011-01-19 09:30:01 +0000241 rcu_barrier();
242
Steven Whitehousee8c92ed2012-04-16 09:28:31 +0100243 mempool_destroy(gfs2_page_pool);
Bob Petersonb54e9a02015-10-26 10:40:28 -0500244 kmem_cache_destroy(gfs2_qadata_cachep);
Steven Whitehouse37b2c832008-11-17 14:25:37 +0000245 kmem_cache_destroy(gfs2_quotad_cachep);
Bob Peterson6bdd9be2008-01-28 17:20:26 -0600246 kmem_cache_destroy(gfs2_rgrpd_cachep);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000247 kmem_cache_destroy(gfs2_bufdata_cachep);
248 kmem_cache_destroy(gfs2_inode_cachep);
Steven Whitehouse009d8512009-12-08 12:12:13 +0000249 kmem_cache_destroy(gfs2_glock_aspace_cachep);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000250 kmem_cache_destroy(gfs2_glock_cachep);
251
252 gfs2_sys_uninit();
253}
254
255MODULE_DESCRIPTION("Global File System");
256MODULE_AUTHOR("Red Hat, Inc.");
257MODULE_LICENSE("GPL");
258
259module_init(init_gfs2_fs);
260module_exit(exit_gfs2_fs);
261