e7fd41792f
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>
90 lines
2.0 KiB
C
90 lines
2.0 KiB
C
/******************************************************************************
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*******************************************************************************
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**
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** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
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**
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** This copyrighted material is made available to anyone wishing to use,
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** modify, copy, or redistribute it subject to the terms and conditions
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** of the GNU General Public License v.2.
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**
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*******************************************************************************
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******************************************************************************/
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#include "dlm_internal.h"
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#include "lockspace.h"
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#include "lock.h"
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#include "memory.h"
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#include "lowcomms.h"
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#include "config.h"
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#ifdef CONFIG_DLM_DEBUG
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int dlm_register_debugfs(void);
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void dlm_unregister_debugfs(void);
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#else
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static inline int dlm_register_debugfs(void) { return 0; }
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static inline void dlm_unregister_debugfs(void) { }
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#endif
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static int __init init_dlm(void)
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{
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int error;
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error = dlm_memory_init();
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if (error)
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goto out;
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error = dlm_lockspace_init();
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if (error)
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goto out_mem;
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error = dlm_config_init();
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if (error)
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goto out_lockspace;
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error = dlm_register_debugfs();
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if (error)
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goto out_config;
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error = dlm_lowcomms_init();
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if (error)
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goto out_debug;
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printk("DLM (built %s %s) installed\n", __DATE__, __TIME__);
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return 0;
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out_debug:
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dlm_unregister_debugfs();
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out_config:
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dlm_config_exit();
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out_lockspace:
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dlm_lockspace_exit();
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out_mem:
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dlm_memory_exit();
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out:
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return error;
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}
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static void __exit exit_dlm(void)
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{
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dlm_lowcomms_exit();
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dlm_config_exit();
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dlm_memory_exit();
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dlm_lockspace_exit();
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dlm_unregister_debugfs();
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}
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module_init(init_dlm);
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module_exit(exit_dlm);
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MODULE_DESCRIPTION("Distributed Lock Manager");
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MODULE_AUTHOR("Red Hat, Inc.");
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MODULE_LICENSE("GPL");
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EXPORT_SYMBOL_GPL(dlm_new_lockspace);
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EXPORT_SYMBOL_GPL(dlm_release_lockspace);
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EXPORT_SYMBOL_GPL(dlm_lock);
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EXPORT_SYMBOL_GPL(dlm_unlock);
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