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/*
* Copyright (C) 2012 Red Hat, Inc.
*
* This file is released under the GPL.
*/
#ifndef DM_CACHE_BLOCK_TYPES_H
#define DM_CACHE_BLOCK_TYPES_H
#include "persistent-data/dm-block-manager.h"
/*----------------------------------------------------------------*/
/*
* It's helpful to get sparse to differentiate between indexes into the
* origin device, indexes into the cache device, and indexes into the
* discard bitset.
*/
typedef dm_block_t __bitwise dm_oblock_t;
typedef uint32_t __bitwise dm_cblock_t;
typedef dm_block_t __bitwise dm_dblock_t;
static inline dm_oblock_t to_oblock(dm_block_t b)
{
return (__force dm_oblock_t) b;
}
static inline dm_block_t from_oblock(dm_oblock_t b)
{
return (__force dm_block_t) b;
}
static inline dm_cblock_t to_cblock(uint32_t b)
{
return (__force dm_cblock_t) b;
}
static inline uint32_t from_cblock(dm_cblock_t b)
{
return (__force uint32_t) b;
}
static inline dm_dblock_t to_dblock(dm_block_t b)
{
return (__force dm_dblock_t) b;
}
static inline dm_block_t from_dblock(dm_dblock_t b)
{
return (__force dm_block_t) b;
}
#endif /* DM_CACHE_BLOCK_TYPES_H */
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