md/persistent-data/dm-persistent-data-internal.h

0001 /*
0002  * Copyright (C) 2011 Red Hat, Inc.
0003  *
0004  * This file is released under the GPL.
0005  */
0006
0007 #ifndef _DM_PERSISTENT_DATA_INTERNAL_H
0008 #define _DM_PERSISTENT_DATA_INTERNAL_H
0009
0010 #include "dm-block-manager.h"
0011
0012 static inline unsigned dm_hash_block(dm_block_t b, unsigned hash_mask)
0013 {
0014     const unsigned BIG_PRIME = 4294967291UL;
0015
0016     return (((unsigned) b) * BIG_PRIME) & hash_mask;
0017 }
0018
0019 #endif  /* _PERSISTENT_DATA_INTERNAL_H */