blob: c112943ee8c1930a8a5e0ce11ecc3a34fd64dc87 [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
7 * of the GNU General Public License v.2.
8 */
9
10#include <linux/sched.h>
11#include <linux/slab.h>
12#include <linux/spinlock.h>
13#include <linux/completion.h>
14#include <linux/buffer_head.h>
15#include <linux/module.h>
16#include <linux/init.h>
Steven Whitehouse5c676f62006-02-27 17:23:27 -050017#include <linux/gfs2_ondisk.h>
David Teiglandb3b94fa2006-01-16 16:50:04 +000018
19#include "gfs2.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050020#include "lm_interface.h"
21#include "incore.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000022#include "ops_fstype.h"
23#include "sys.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050024#include "util.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000025
Steven Whitehouse320dd102006-05-18 16:25:27 -040026static void gfs2_init_inode_once(void *foo, kmem_cache_t *cachep, unsigned long flags)
27{
28 struct gfs2_inode *ip = foo;
29 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
30 SLAB_CTOR_CONSTRUCTOR) {
31 inode_init_once(&ip->i_inode);
Steven Whitehouse320dd102006-05-18 16:25:27 -040032 spin_lock_init(&ip->i_spin);
33 init_rwsem(&ip->i_rw_mutex);
34 memset(ip->i_cache, 0, sizeof(ip->i_cache));
35 }
36}
37
David Teiglandb3b94fa2006-01-16 16:50:04 +000038/**
39 * init_gfs2_fs - Register GFS2 as a filesystem
40 *
41 * Returns: 0 on success, error code on failure
42 */
43
44static int __init init_gfs2_fs(void)
45{
46 int error;
47
48 gfs2_init_lmh();
49
50 error = gfs2_sys_init();
51 if (error)
52 return error;
53
54 error = -ENOMEM;
55
56 gfs2_glock_cachep = kmem_cache_create("gfs2_glock",
57 sizeof(struct gfs2_glock),
58 0, 0, NULL, NULL);
59 if (!gfs2_glock_cachep)
60 goto fail;
61
62 gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
63 sizeof(struct gfs2_inode),
Steven Whitehouse320dd102006-05-18 16:25:27 -040064 0, (SLAB_RECLAIM_ACCOUNT|
65 SLAB_PANIC|SLAB_MEM_SPREAD),
66 gfs2_init_inode_once, NULL);
David Teiglandb3b94fa2006-01-16 16:50:04 +000067 if (!gfs2_inode_cachep)
68 goto fail;
69
70 gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata",
71 sizeof(struct gfs2_bufdata),
72 0, 0, NULL, NULL);
73 if (!gfs2_bufdata_cachep)
74 goto fail;
75
76 error = register_filesystem(&gfs2_fs_type);
77 if (error)
78 goto fail;
79
Steven Whitehouse419c93e2006-03-02 16:33:41 -050080 error = register_filesystem(&gfs2meta_fs_type);
81 if (error)
82 goto fail_unregister;
83
David Teiglandb3b94fa2006-01-16 16:50:04 +000084 printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__);
85
86 return 0;
87
Steven Whitehouse419c93e2006-03-02 16:33:41 -050088fail_unregister:
89 unregister_filesystem(&gfs2_fs_type);
90fail:
David Teiglandb3b94fa2006-01-16 16:50:04 +000091 if (gfs2_bufdata_cachep)
92 kmem_cache_destroy(gfs2_bufdata_cachep);
93
94 if (gfs2_inode_cachep)
95 kmem_cache_destroy(gfs2_inode_cachep);
96
97 if (gfs2_glock_cachep)
98 kmem_cache_destroy(gfs2_glock_cachep);
99
100 gfs2_sys_uninit();
101 return error;
102}
103
104/**
105 * exit_gfs2_fs - Unregister the file system
106 *
107 */
108
109static void __exit exit_gfs2_fs(void)
110{
111 unregister_filesystem(&gfs2_fs_type);
Steven Whitehouse419c93e2006-03-02 16:33:41 -0500112 unregister_filesystem(&gfs2meta_fs_type);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000113
114 kmem_cache_destroy(gfs2_bufdata_cachep);
115 kmem_cache_destroy(gfs2_inode_cachep);
116 kmem_cache_destroy(gfs2_glock_cachep);
117
118 gfs2_sys_uninit();
119}
120
121MODULE_DESCRIPTION("Global File System");
122MODULE_AUTHOR("Red Hat, Inc.");
123MODULE_LICENSE("GPL");
124
125module_init(init_gfs2_fs);
126module_exit(exit_gfs2_fs);
127