2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
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>
16 #include <linux/gfs2_ondisk.h>
17 #include <linux/lm_interface.h>
18 #include <asm/atomic.h>
28 static struct shrinker qd_shrinker = {
29 .shrink = gfs2_shrink_qd_memory,
30 .seeks = DEFAULT_SEEKS,
33 static void gfs2_init_inode_once(void *foo)
35 struct gfs2_inode *ip = foo;
37 inode_init_once(&ip->i_inode);
38 init_rwsem(&ip->i_rw_mutex);
39 INIT_LIST_HEAD(&ip->i_trunc_list);
43 static void gfs2_init_glock_once(void *foo)
45 struct gfs2_glock *gl = foo;
47 INIT_HLIST_NODE(&gl->gl_list);
48 spin_lock_init(&gl->gl_spin);
49 INIT_LIST_HEAD(&gl->gl_holders);
51 atomic_set(&gl->gl_lvb_count, 0);
52 INIT_LIST_HEAD(&gl->gl_lru);
53 INIT_LIST_HEAD(&gl->gl_ail_list);
54 atomic_set(&gl->gl_ail_count, 0);
58 * init_gfs2_fs - Register GFS2 as a filesystem
60 * Returns: 0 on success, error code on failure
63 static int __init init_gfs2_fs(void)
67 error = gfs2_sys_init();
71 error = gfs2_glock_init();
76 gfs2_glock_cachep = kmem_cache_create("gfs2_glock",
77 sizeof(struct gfs2_glock),
79 gfs2_init_glock_once);
80 if (!gfs2_glock_cachep)
83 gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
84 sizeof(struct gfs2_inode),
85 0, SLAB_RECLAIM_ACCOUNT|
87 gfs2_init_inode_once);
88 if (!gfs2_inode_cachep)
91 gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata",
92 sizeof(struct gfs2_bufdata),
94 if (!gfs2_bufdata_cachep)
97 gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd",
98 sizeof(struct gfs2_rgrpd),
100 if (!gfs2_rgrpd_cachep)
103 gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad",
104 sizeof(struct gfs2_quota_data),
106 if (!gfs2_quotad_cachep)
109 register_shrinker(&qd_shrinker);
111 error = register_filesystem(&gfs2_fs_type);
115 error = register_filesystem(&gfs2meta_fs_type);
117 goto fail_unregister;
119 gfs2_register_debugfs();
121 printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__);
126 unregister_filesystem(&gfs2_fs_type);
128 unregister_shrinker(&qd_shrinker);
131 if (gfs2_quotad_cachep)
132 kmem_cache_destroy(gfs2_quotad_cachep);
134 if (gfs2_rgrpd_cachep)
135 kmem_cache_destroy(gfs2_rgrpd_cachep);
137 if (gfs2_bufdata_cachep)
138 kmem_cache_destroy(gfs2_bufdata_cachep);
140 if (gfs2_inode_cachep)
141 kmem_cache_destroy(gfs2_inode_cachep);
143 if (gfs2_glock_cachep)
144 kmem_cache_destroy(gfs2_glock_cachep);
151 * exit_gfs2_fs - Unregister the file system
155 static void __exit exit_gfs2_fs(void)
157 unregister_shrinker(&qd_shrinker);
159 gfs2_unregister_debugfs();
160 unregister_filesystem(&gfs2_fs_type);
161 unregister_filesystem(&gfs2meta_fs_type);
163 kmem_cache_destroy(gfs2_quotad_cachep);
164 kmem_cache_destroy(gfs2_rgrpd_cachep);
165 kmem_cache_destroy(gfs2_bufdata_cachep);
166 kmem_cache_destroy(gfs2_inode_cachep);
167 kmem_cache_destroy(gfs2_glock_cachep);
172 MODULE_DESCRIPTION("Global File System");
173 MODULE_AUTHOR("Red Hat, Inc.");
174 MODULE_LICENSE("GPL");
176 module_init(init_gfs2_fs);
177 module_exit(exit_gfs2_fs);