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 <asm/atomic.h>
27 static struct shrinker qd_shrinker
= {
28 .shrink
= gfs2_shrink_qd_memory
,
29 .seeks
= DEFAULT_SEEKS
,
32 static void gfs2_init_inode_once(void *foo
)
34 struct gfs2_inode
*ip
= foo
;
36 inode_init_once(&ip
->i_inode
);
37 init_rwsem(&ip
->i_rw_mutex
);
38 INIT_LIST_HEAD(&ip
->i_trunc_list
);
42 static void gfs2_init_glock_once(void *foo
)
44 struct gfs2_glock
*gl
= foo
;
46 INIT_HLIST_NODE(&gl
->gl_list
);
47 spin_lock_init(&gl
->gl_spin
);
48 INIT_LIST_HEAD(&gl
->gl_holders
);
49 INIT_LIST_HEAD(&gl
->gl_lru
);
50 INIT_LIST_HEAD(&gl
->gl_ail_list
);
51 atomic_set(&gl
->gl_ail_count
, 0);
55 * init_gfs2_fs - Register GFS2 as a filesystem
57 * Returns: 0 on success, error code on failure
60 static int __init
init_gfs2_fs(void)
64 error
= gfs2_sys_init();
68 error
= gfs2_glock_init();
73 gfs2_glock_cachep
= kmem_cache_create("gfs2_glock",
74 sizeof(struct gfs2_glock
),
76 gfs2_init_glock_once
);
77 if (!gfs2_glock_cachep
)
80 gfs2_inode_cachep
= kmem_cache_create("gfs2_inode",
81 sizeof(struct gfs2_inode
),
82 0, SLAB_RECLAIM_ACCOUNT
|
84 gfs2_init_inode_once
);
85 if (!gfs2_inode_cachep
)
88 gfs2_bufdata_cachep
= kmem_cache_create("gfs2_bufdata",
89 sizeof(struct gfs2_bufdata
),
91 if (!gfs2_bufdata_cachep
)
94 gfs2_rgrpd_cachep
= kmem_cache_create("gfs2_rgrpd",
95 sizeof(struct gfs2_rgrpd
),
97 if (!gfs2_rgrpd_cachep
)
100 gfs2_quotad_cachep
= kmem_cache_create("gfs2_quotad",
101 sizeof(struct gfs2_quota_data
),
103 if (!gfs2_quotad_cachep
)
106 register_shrinker(&qd_shrinker
);
108 error
= register_filesystem(&gfs2_fs_type
);
112 error
= register_filesystem(&gfs2meta_fs_type
);
114 goto fail_unregister
;
116 gfs2_register_debugfs();
118 printk("GFS2 (built %s %s) installed\n", __DATE__
, __TIME__
);
123 unregister_filesystem(&gfs2_fs_type
);
125 unregister_shrinker(&qd_shrinker
);
128 if (gfs2_quotad_cachep
)
129 kmem_cache_destroy(gfs2_quotad_cachep
);
131 if (gfs2_rgrpd_cachep
)
132 kmem_cache_destroy(gfs2_rgrpd_cachep
);
134 if (gfs2_bufdata_cachep
)
135 kmem_cache_destroy(gfs2_bufdata_cachep
);
137 if (gfs2_inode_cachep
)
138 kmem_cache_destroy(gfs2_inode_cachep
);
140 if (gfs2_glock_cachep
)
141 kmem_cache_destroy(gfs2_glock_cachep
);
148 * exit_gfs2_fs - Unregister the file system
152 static void __exit
exit_gfs2_fs(void)
154 unregister_shrinker(&qd_shrinker
);
156 gfs2_unregister_debugfs();
157 unregister_filesystem(&gfs2_fs_type
);
158 unregister_filesystem(&gfs2meta_fs_type
);
160 kmem_cache_destroy(gfs2_quotad_cachep
);
161 kmem_cache_destroy(gfs2_rgrpd_cachep
);
162 kmem_cache_destroy(gfs2_bufdata_cachep
);
163 kmem_cache_destroy(gfs2_inode_cachep
);
164 kmem_cache_destroy(gfs2_glock_cachep
);
169 MODULE_DESCRIPTION("Global File System");
170 MODULE_AUTHOR("Red Hat, Inc.");
171 MODULE_LICENSE("GPL");
173 module_init(init_gfs2_fs
);
174 module_exit(exit_gfs2_fs
);
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