1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Copyright (C) 2012 Red Hat, Inc. 4 * 5 * This file is released under the GPL. 6 */ 7 8#ifndef DM_CACHE_BLOCK_TYPES_H 9#define DM_CACHE_BLOCK_TYPES_H 10 11#include "persistent-data/dm-block-manager.h" 12 13/*----------------------------------------------------------------*/ 14 15/* 16 * It's helpful to get sparse to differentiate between indexes into the 17 * origin device, indexes into the cache device, and indexes into the 18 * discard bitset. 19 */ 20 21typedef dm_block_t __bitwise dm_oblock_t; 22typedef uint32_t __bitwise dm_cblock_t; 23typedef dm_block_t __bitwise dm_dblock_t; 24 25static inline dm_oblock_t to_oblock(dm_block_t b) 26{ 27 return (__force dm_oblock_t) b; 28} 29 30static inline dm_block_t from_oblock(dm_oblock_t b) 31{ 32 return (__force dm_block_t) b; 33} 34 35static inline dm_cblock_t to_cblock(uint32_t b) 36{ 37 return (__force dm_cblock_t) b; 38} 39 40static inline uint32_t from_cblock(dm_cblock_t b) 41{ 42 return (__force uint32_t) b; 43} 44 45static inline dm_dblock_t to_dblock(dm_block_t b) 46{ 47 return (__force dm_dblock_t) b; 48} 49 50static inline dm_block_t from_dblock(dm_dblock_t b) 51{ 52 return (__force dm_block_t) b; 53} 54 55#endif /* DM_CACHE_BLOCK_TYPES_H */ 56