linux-sg2042/drivers/md/persistent-data/dm-persistent-data-internal.h

20 lines
407 B
C

/*
* Copyright (C) 2011 Red Hat, Inc.
*
* This file is released under the GPL.
*/
#ifndef _DM_PERSISTENT_DATA_INTERNAL_H
#define _DM_PERSISTENT_DATA_INTERNAL_H
#include "dm-block-manager.h"
static inline unsigned dm_hash_block(dm_block_t b, unsigned hash_mask)
{
const unsigned BIG_PRIME = 4294967291UL;
return (((unsigned) b) * BIG_PRIME) & hash_mask;
}
#endif /* _PERSISTENT_DATA_INTERNAL_H */