dm-persistent-data-internal.h 467 B

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * Copyright (C) 2011 Red Hat, Inc.
  4. *
  5. * This file is released under the GPL.
  6. */
  7. #ifndef _DM_PERSISTENT_DATA_INTERNAL_H
  8. #define _DM_PERSISTENT_DATA_INTERNAL_H
  9. #include "dm-block-manager.h"
  10. static inline unsigned int dm_hash_block(dm_block_t b, unsigned int hash_mask)
  11. {
  12. const unsigned int BIG_PRIME = 4294967291UL;
  13. return (((unsigned int) b) * BIG_PRIME) & hash_mask;
  14. }
  15. #endif /* _PERSISTENT_DATA_INTERNAL_H */