| 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 | |
| 21 | typedef dm_block_t __bitwise dm_oblock_t; |
| 22 | typedef uint32_t __bitwise dm_cblock_t; |
| 23 | typedef dm_block_t __bitwise dm_dblock_t; |
| 24 | |
| 25 | static inline dm_oblock_t to_oblock(dm_block_t b) |
| 26 | { |
| 27 | return (__force dm_oblock_t) b; |
| 28 | } |
| 29 | |
| 30 | static inline dm_block_t from_oblock(dm_oblock_t b) |
| 31 | { |
| 32 | return (__force dm_block_t) b; |
| 33 | } |
| 34 | |
| 35 | static inline dm_cblock_t to_cblock(uint32_t b) |
| 36 | { |
| 37 | return (__force dm_cblock_t) b; |
| 38 | } |
| 39 | |
| 40 | static inline uint32_t from_cblock(dm_cblock_t b) |
| 41 | { |
| 42 | return (__force uint32_t) b; |
| 43 | } |
| 44 | |
| 45 | static inline dm_dblock_t to_dblock(dm_block_t b) |
| 46 | { |
| 47 | return (__force dm_dblock_t) b; |
| 48 | } |
| 49 | |
| 50 | static 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 |