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/*
* Copyright (C) 2006-2008 Red Hat, Inc. All rights reserved.
*
* Module Author: Heinz Mauelshagen (Mauelshagen@RedHat.com)
*
* Locking definitions for the device-mapper RAID45 target.
*
* This file is released under the GPL.
*
*/
#ifndef _DM_RAID45_H
#define _DM_RAID45_H
/* Factor out to dm.h! */
#define STR_LEN(ptr, str) (ptr), (str), strlen((ptr))
enum dm_lock_type { DM_RAID45_EX, DM_RAID45_SHARED };
struct dm_raid45_locking_type {
/* Request a lock on a stripe. */
void* (*lock)(sector_t key, enum dm_lock_type type);
/* Release a lock on a stripe. */
void (*unlock)(void *lock_handle);
};
#endif
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