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 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
38 extern struct address_space_operations ll_aops;
39 extern struct address_space_operations ll_dir_aops;
41 static struct super_block *ll_read_super(struct super_block *sb,
42 void *data, int silent)
46 err = ll_fill_super(sb, data, silent);
52 static struct super_block *lustre_read_super(struct super_block *sb,
53 void *data, int silent)
57 err = lustre_fill_super(sb, data, silent);
63 /* exported operations */
64 struct super_operations ll_super_operations =
66 read_inode2: ll_read_inode2,
67 clear_inode: ll_clear_inode,
68 // delete_inode: ll_delete_inode,
69 put_super: ll_put_super,
71 umount_begin: ll_umount_begin,
72 fh_to_dentry: ll_fh_to_dentry,
73 dentry_to_fh: ll_dentry_to_fh
76 static struct file_system_type lustre_lite_fs_type = {
78 fs_flags: FS_NFSEXP_FSID,
79 read_super: ll_read_super,
83 /* exported operations */
84 struct super_operations lustre_super_operations =
86 read_inode2: ll_read_inode2,
87 clear_inode: ll_clear_inode,
88 // delete_inode: ll_delete_inode,
89 put_super: lustre_put_super,
91 umount_begin: ll_umount_begin,
92 fh_to_dentry: ll_fh_to_dentry,
93 dentry_to_fh: ll_dentry_to_fh
96 static struct file_system_type lustre_fs_type = {
98 fs_flags: FS_NFSEXP_FSID,
99 read_super: lustre_read_super,
103 static int __init init_lustre_lite(void)
107 printk(KERN_INFO "Lustre: Lustre Lite Client File System; "
108 "info@clusterfs.com\n");
109 ll_file_data_slab = kmem_cache_create("ll_file_data",
110 sizeof(struct ll_file_data), 0,
111 SLAB_HWCACHE_ALIGN, NULL, NULL);
112 if (ll_file_data_slab == NULL)
115 proc_lustre_fs_root = proc_lustre_root ? proc_mkdir("llite", proc_lustre_root) : NULL;
117 rc = register_filesystem(&lustre_lite_fs_type);
119 rc = register_filesystem(&lustre_fs_type);
121 unregister_filesystem(&lustre_lite_fs_type);
125 static void __exit exit_lustre_lite(void)
127 unregister_filesystem(&lustre_lite_fs_type);
128 unregister_filesystem(&lustre_fs_type);
130 kmem_cache_destroy(ll_file_data_slab);
132 if (proc_lustre_fs_root) {
133 lprocfs_remove(proc_lustre_fs_root);
134 proc_lustre_fs_root = NULL;
138 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
139 MODULE_DESCRIPTION("Lustre Lite Client File System");
140 MODULE_LICENSE("GPL");
142 module_init(init_lustre_lite);
143 module_exit(exit_lustre_lite);