2026-01-29 22:25:33 +08:00
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/* SPDX-License-Identifier: GPL-2.0-only */
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2026-01-21 18:59:54 +08:00
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/*
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* Copyright (C) 2011 Red Hat, Inc.
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*
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* This file is released under the GPL.
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*/
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#ifndef _DM_PERSISTENT_DATA_INTERNAL_H
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#define _DM_PERSISTENT_DATA_INTERNAL_H
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#include "dm-block-manager.h"
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2026-01-29 22:25:33 +08:00
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static inline unsigned int dm_hash_block(dm_block_t b, unsigned int hash_mask)
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2026-01-21 18:59:54 +08:00
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{
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2026-01-29 22:25:33 +08:00
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const unsigned int BIG_PRIME = 4294967291UL;
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2026-01-21 18:59:54 +08:00
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2026-01-29 22:25:33 +08:00
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return (((unsigned int) b) * BIG_PRIME) & hash_mask;
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2026-01-21 18:59:54 +08:00
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}
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#endif /* _PERSISTENT_DATA_INTERNAL_H */
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