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