[GFS2] The lock modules for GFS2

This patch contains the pluggable locking modules
for GFS2.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/fs/gfs2/locking/dlm/main.c b/fs/gfs2/locking/dlm/main.c
new file mode 100644
index 000000000000..3ced92ef1b19
--- /dev/null
+++ b/fs/gfs2/locking/dlm/main.c
@@ -0,0 +1,58 @@
+/******************************************************************************
+*******************************************************************************
+**
+**  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
+**  Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
+**
+**  This copyrighted material is made available to anyone wishing to use,
+**  modify, copy, or redistribute it subject to the terms and conditions
+**  of the GNU General Public License v.2.
+**
+*******************************************************************************
+******************************************************************************/
+
+#include <linux/init.h>
+
+#include "lock_dlm.h"
+
+extern int gdlm_drop_count;
+extern int gdlm_drop_period;
+
+extern struct lm_lockops gdlm_ops;
+
+int __init init_lock_dlm(void)
+{
+	int error;
+
+	error = lm_register_proto(&gdlm_ops);
+	if (error) {
+		printk("lock_dlm:  can't register protocol: %d\n", error);
+		return error;
+	}
+
+	error = gdlm_sysfs_init();
+	if (error) {
+		lm_unregister_proto(&gdlm_ops);
+		return error;
+	}
+
+	gdlm_drop_count = GDLM_DROP_COUNT;
+	gdlm_drop_period = GDLM_DROP_PERIOD;
+
+	printk("Lock_DLM (built %s %s) installed\n", __DATE__, __TIME__);
+	return 0;
+}
+
+void __exit exit_lock_dlm(void)
+{
+	lm_unregister_proto(&gdlm_ops);
+	gdlm_sysfs_exit();
+}
+
+module_init(init_lock_dlm);
+module_exit(exit_lock_dlm);
+
+MODULE_DESCRIPTION("GFS DLM Locking Module");
+MODULE_AUTHOR("Red Hat, Inc.");
+MODULE_LICENSE("GPL");
+