Linux 3.12.39
[linux/fpc-iii.git] / drivers / md / persistent-data / dm-persistent-data-internal.h
blobc49e26fff36c85fc87f7b898d91a23be0923d6a8
1 /*
2 * Copyright (C) 2011 Red Hat, Inc.
4 * This file is released under the GPL.
5 */
7 #ifndef _DM_PERSISTENT_DATA_INTERNAL_H
8 #define _DM_PERSISTENT_DATA_INTERNAL_H
10 #include "dm-block-manager.h"
12 static inline unsigned dm_hash_block(dm_block_t b, unsigned hash_mask)
14 const unsigned BIG_PRIME = 4294967291UL;
16 return (((unsigned) b) * BIG_PRIME) & hash_mask;
19 #endif /* _PERSISTENT_DATA_INTERNAL_H */