1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2011 Red Hat, Inc.
 4 *
 5 * This file is released under the GPL.
 6 */
 7
 8#ifndef _DM_PERSISTENT_DATA_INTERNAL_H
 9#define _DM_PERSISTENT_DATA_INTERNAL_H
10
11#include "dm-block-manager.h"
12
13static inline unsigned int dm_hash_block(dm_block_t b, unsigned int hash_mask)
14{
15	const unsigned int BIG_PRIME = 4294967291UL;
16
17	return (((unsigned int) b) * BIG_PRIME) & hash_mask;
18}
19
20#endif	/* _PERSISTENT_DATA_INTERNAL_H */