/*
   * 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 */