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authorDavid Teigland <teigland@redhat.com>2006-01-18 09:30:29 +0000
committerSteven Whitehouse <swhiteho@redhat.com>2006-01-18 09:30:29 +0000
commite7fd41792fc0ee52a05fcaac87511f118328d147 (patch)
treeeee5227088ba97daef795e385b7548d2a1cc4cb6 /fs/dlm/main.c
parente47314207032cfd1157b8c377df162839b32ea6f (diff)
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[DLM] The core of the DLM for GFS2/CLVM
This is the core of the distributed lock manager which is required to use GFS2 as a cluster filesystem. It is also used by CLVM and can be used as a standalone lock manager independantly of either of these two projects. It implements VAX-style locking modes. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steve Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/dlm/main.c')
-rw-r--r--fs/dlm/main.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/fs/dlm/main.c b/fs/dlm/main.c
new file mode 100644
index 0000000..81bf4cb
--- /dev/null
+++ b/fs/dlm/main.c
@@ -0,0 +1,89 @@
+/******************************************************************************
+*******************************************************************************
+**
+** 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 "dlm_internal.h"
+#include "lockspace.h"
+#include "lock.h"
+#include "memory.h"
+#include "lowcomms.h"
+#include "config.h"
+
+#ifdef CONFIG_DLM_DEBUG
+int dlm_register_debugfs(void);
+void dlm_unregister_debugfs(void);
+#else
+static inline int dlm_register_debugfs(void) { return 0; }
+static inline void dlm_unregister_debugfs(void) { }
+#endif
+
+static int __init init_dlm(void)
+{
+ int error;
+
+ error = dlm_memory_init();
+ if (error)
+ goto out;
+
+ error = dlm_lockspace_init();
+ if (error)
+ goto out_mem;
+
+ error = dlm_config_init();
+ if (error)
+ goto out_lockspace;
+
+ error = dlm_register_debugfs();
+ if (error)
+ goto out_config;
+
+ error = dlm_lowcomms_init();
+ if (error)
+ goto out_debug;
+
+ printk("DLM (built %s %s) installed\n", __DATE__, __TIME__);
+
+ return 0;
+
+ out_debug:
+ dlm_unregister_debugfs();
+ out_config:
+ dlm_config_exit();
+ out_lockspace:
+ dlm_lockspace_exit();
+ out_mem:
+ dlm_memory_exit();
+ out:
+ return error;
+}
+
+static void __exit exit_dlm(void)
+{
+ dlm_lowcomms_exit();
+ dlm_config_exit();
+ dlm_memory_exit();
+ dlm_lockspace_exit();
+ dlm_unregister_debugfs();
+}
+
+module_init(init_dlm);
+module_exit(exit_dlm);
+
+MODULE_DESCRIPTION("Distributed Lock Manager");
+MODULE_AUTHOR("Red Hat, Inc.");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL_GPL(dlm_new_lockspace);
+EXPORT_SYMBOL_GPL(dlm_release_lockspace);
+EXPORT_SYMBOL_GPL(dlm_lock);
+EXPORT_SYMBOL_GPL(dlm_unlock);
+