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 v.2.
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>
17 #include <linux/gfs2_ondisk.h>
20 #include "lm_interface.h"
22 #include "ops_fstype.h"
26 static void gfs2_init_inode_once(void *foo, kmem_cache_t *cachep, unsigned long flags)
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);
32 atomic_set(&ip->i_count, 0);
33 ip->i_vnode = &ip->i_inode;
34 spin_lock_init(&ip->i_spin);
35 init_rwsem(&ip->i_rw_mutex);
36 memset(ip->i_cache, 0, sizeof(ip->i_cache));
41 * init_gfs2_fs - Register GFS2 as a filesystem
43 * Returns: 0 on success, error code on failure
46 static int __init init_gfs2_fs(void)
52 error = gfs2_sys_init();
58 gfs2_glock_cachep = kmem_cache_create("gfs2_glock",
59 sizeof(struct gfs2_glock),
61 if (!gfs2_glock_cachep)
64 gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
65 sizeof(struct gfs2_inode),
66 0, (SLAB_RECLAIM_ACCOUNT|
67 SLAB_PANIC|SLAB_MEM_SPREAD),
68 gfs2_init_inode_once, NULL);
69 if (!gfs2_inode_cachep)
72 gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata",
73 sizeof(struct gfs2_bufdata),
75 if (!gfs2_bufdata_cachep)
78 error = register_filesystem(&gfs2_fs_type);
82 error = register_filesystem(&gfs2meta_fs_type);
86 printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__);
91 unregister_filesystem(&gfs2_fs_type);
93 if (gfs2_bufdata_cachep)
94 kmem_cache_destroy(gfs2_bufdata_cachep);
96 if (gfs2_inode_cachep)
97 kmem_cache_destroy(gfs2_inode_cachep);
99 if (gfs2_glock_cachep)
100 kmem_cache_destroy(gfs2_glock_cachep);
107 * exit_gfs2_fs - Unregister the file system
111 static void __exit exit_gfs2_fs(void)
113 unregister_filesystem(&gfs2_fs_type);
114 unregister_filesystem(&gfs2meta_fs_type);
116 kmem_cache_destroy(gfs2_bufdata_cachep);
117 kmem_cache_destroy(gfs2_inode_cachep);
118 kmem_cache_destroy(gfs2_glock_cachep);
123 MODULE_DESCRIPTION("Global File System");
124 MODULE_AUTHOR("Red Hat, Inc.");
125 MODULE_LICENSE("GPL");
127 module_init(init_gfs2_fs);
128 module_exit(exit_gfs2_fs);