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Heinz Mauelshagen
83ee6b2729
[ Upstream commit86a3238c7b] Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> Stable-dep-of:f7b58a69fa("dm: fix improper splitting for abnormal bios") Signed-off-by: Sasha Levin <sashal@kernel.org>
20 lines
423 B
C
20 lines
423 B
C
/*
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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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static inline unsigned int dm_hash_block(dm_block_t b, unsigned int hash_mask)
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{
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const unsigned int BIG_PRIME = 4294967291UL;
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return (((unsigned int) b) * BIG_PRIME) & hash_mask;
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}
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#endif /* _PERSISTENT_DATA_INTERNAL_H */
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