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