1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Lustre Light Super operations
6 * Copyright (c) 2002, 2003 Cluster File Systems, Inc.
8 * This file is part of Lustre, http://www.lustre.org.
10 * Lustre is free software; you can redistribute it and/or
11 * modify it under the terms of version 2 of the GNU General Public
12 * License as published by the Free Software Foundation.
14 * Lustre is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with Lustre; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #define DEBUG_SUBSYSTEM S_LLITE
26 #include <linux/module.h>
27 #include <linux/random.h>
28 #include <linux/version.h>
29 #include <linux/lustre_lite.h>
30 #include <linux/lustre_ha.h>
31 #include <linux/lustre_dlm.h>
32 #include <linux/init.h>
34 #include <linux/lprocfs_status.h>
35 #include "llite_internal.h"
37 extern struct address_space_operations ll_aops;
38 extern struct address_space_operations ll_dir_aops;
40 static struct super_block *ll_read_super(struct super_block *sb,
41 void *data, int silent)
45 err = ll_fill_super(sb, data, silent);
51 static struct super_block *lustre_read_super(struct super_block *sb,
52 void *data, int silent)
56 err = lustre_fill_super(sb, data, silent);
62 /* exported operations */
63 struct super_operations ll_super_operations =
65 read_inode2: ll_read_inode2,
66 clear_inode: ll_clear_inode,
67 // delete_inode: ll_delete_inode,
68 put_super: ll_put_super,
70 umount_begin: ll_umount_begin,
71 fh_to_dentry: ll_fh_to_dentry,
72 dentry_to_fh: ll_dentry_to_fh
75 static struct file_system_type lustre_lite_fs_type = {
77 fs_flags: FS_NFSEXP_FSID,
78 read_super: ll_read_super,
82 /* exported operations */
83 struct super_operations lustre_super_operations =
85 read_inode2: ll_read_inode2,
86 clear_inode: ll_clear_inode,
87 // delete_inode: ll_delete_inode,
88 put_super: lustre_put_super,
90 umount_begin: ll_umount_begin,
91 fh_to_dentry: ll_fh_to_dentry,
92 dentry_to_fh: ll_dentry_to_fh
95 static struct file_system_type lustre_fs_type = {
97 fs_flags: FS_NFSEXP_FSID,
98 read_super: lustre_read_super,
102 static int __init init_lustre_lite(void)
106 printk(KERN_INFO "Lustre: Lustre Lite Client File System; "
107 "info@clusterfs.com\n");
108 ll_file_data_slab = kmem_cache_create("ll_file_data",
109 sizeof(struct ll_file_data), 0,
110 SLAB_HWCACHE_ALIGN, NULL, NULL);
111 if (ll_file_data_slab == NULL)
114 proc_lustre_fs_root = proc_lustre_root ? proc_mkdir("llite", proc_lustre_root) : NULL;
116 rc = register_filesystem(&lustre_lite_fs_type);
118 rc = register_filesystem(&lustre_fs_type);
120 unregister_filesystem(&lustre_lite_fs_type);
124 static void __exit exit_lustre_lite(void)
126 unregister_filesystem(&lustre_lite_fs_type);
127 unregister_filesystem(&lustre_fs_type);
129 kmem_cache_destroy(ll_file_data_slab);
131 if (proc_lustre_fs_root) {
132 lprocfs_remove(proc_lustre_fs_root);
133 proc_lustre_fs_root = NULL;
137 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
138 MODULE_DESCRIPTION("Lustre Lite Client File System");
139 MODULE_LICENSE("GPL");
141 module_init(init_lustre_lite);
142 module_exit(exit_lustre_lite);