1/*
 2 * Copyright (C) 2011 Red Hat, Inc.
 3 *
 4 * This file is released under the GPL.
 5 */
 6
 7#ifndef _DM_PERSISTENT_DATA_INTERNAL_H
 8#define _DM_PERSISTENT_DATA_INTERNAL_H
 9
10#include "dm-block-manager.h"
11
12static inline unsigned dm_hash_block(dm_block_t b, unsigned hash_mask)
13{
14	const unsigned BIG_PRIME = 4294967291UL;
15
16	return (((unsigned) b) * BIG_PRIME) & hash_mask;
17}
18
19#endif	/* _PERSISTENT_DATA_INTERNAL_H */