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