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 |