Joe Thornber | c6b4fcb | 2013-03-01 22:45:51 +0000 | [diff] [blame] | 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; |
Joe Thornber | c6b4fcb | 2013-03-01 22:45:51 +0000 | [diff] [blame] | 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 | |
Joe Thornber | c6b4fcb | 2013-03-01 22:45:51 +0000 | [diff] [blame] | 43 | #endif /* DM_CACHE_BLOCK_TYPES_H */ |