fs/gfs2/locking/dlm/main.c

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
   4  *
   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/init.h>
  11
  12 #include "lock_dlm.h"
  13
  14 extern int gdlm_drop_count;
  15 extern int gdlm_drop_period;
  16
  17 extern struct lm_lockops gdlm_ops;
  18
  19 static int __init init_lock_dlm(void)
  20 {
  21         int error;
  22
  23         error = gfs_register_lockproto(&gdlm_ops);
  24         if (error) {
  25                 printk(KERN_WARNING "lock_dlm:  can't register protocol: %d\n",
  26                        error);
  27                 return error;
  28         }
  29
  30         error = gdlm_sysfs_init();
  31         if (error) {
  32                 gfs_unregister_lockproto(&gdlm_ops);
  33                 return error;
  34         }
  35
  36         error = gdlm_plock_init();
  37         if (error) {
  38                 gdlm_sysfs_exit();
  39                 gfs_unregister_lockproto(&gdlm_ops);
  40                 return error;
  41         }
  42
  43         gdlm_drop_count = GDLM_DROP_COUNT;
  44         gdlm_drop_period = GDLM_DROP_PERIOD;
  45
  46         printk(KERN_INFO
  47                "Lock_DLM (built %s %s) installed\n", __DATE__, __TIME__);
  48         return 0;
  49 }
  50
  51 static void __exit exit_lock_dlm(void)
  52 {
  53         gdlm_plock_exit();
  54         gdlm_sysfs_exit();
  55         gfs_unregister_lockproto(&gdlm_ops);
  56 }
  57
  58 module_init(init_lock_dlm);
  59 module_exit(exit_lock_dlm);
  60
  61 MODULE_DESCRIPTION("GFS DLM Locking Module");
  62 MODULE_AUTHOR("Red Hat, Inc.");
  63 MODULE_LICENSE("GPL");
  64