This source file includes following definitions.
- dm_sm_destroy
- dm_sm_extend
- dm_sm_get_nr_blocks
- dm_sm_get_nr_free
- dm_sm_get_count
- dm_sm_count_is_more_than_one
- dm_sm_set_count
- dm_sm_commit
- dm_sm_inc_block
- dm_sm_dec_block
- dm_sm_new_block
- dm_sm_root_size
- dm_sm_copy_root
- dm_sm_register_threshold_callback
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7 #ifndef _LINUX_DM_SPACE_MAP_H
8 #define _LINUX_DM_SPACE_MAP_H
9
10 #include "dm-block-manager.h"
11
12 typedef void (*dm_sm_threshold_fn)(void *context);
13
14
15
16
17
18 struct dm_space_map {
19 void (*destroy)(struct dm_space_map *sm);
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21
22
23
24 int (*extend)(struct dm_space_map *sm, dm_block_t extra_blocks);
25
26
27
28
29
30 int (*get_nr_blocks)(struct dm_space_map *sm, dm_block_t *count);
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38
39
40 int (*get_nr_free)(struct dm_space_map *sm, dm_block_t *count);
41
42 int (*get_count)(struct dm_space_map *sm, dm_block_t b, uint32_t *result);
43 int (*count_is_more_than_one)(struct dm_space_map *sm, dm_block_t b,
44 int *result);
45 int (*set_count)(struct dm_space_map *sm, dm_block_t b, uint32_t count);
46
47 int (*commit)(struct dm_space_map *sm);
48
49 int (*inc_block)(struct dm_space_map *sm, dm_block_t b);
50 int (*dec_block)(struct dm_space_map *sm, dm_block_t b);
51
52
53
54
55 int (*new_block)(struct dm_space_map *sm, dm_block_t *b);
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60
61
62 int (*root_size)(struct dm_space_map *sm, size_t *result);
63 int (*copy_root)(struct dm_space_map *sm, void *copy_to_here_le, size_t len);
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65
66
67
68
69 int (*register_threshold_callback)(struct dm_space_map *sm,
70 dm_block_t threshold,
71 dm_sm_threshold_fn fn,
72 void *context);
73 };
74
75
76
77 static inline void dm_sm_destroy(struct dm_space_map *sm)
78 {
79 sm->destroy(sm);
80 }
81
82 static inline int dm_sm_extend(struct dm_space_map *sm, dm_block_t extra_blocks)
83 {
84 return sm->extend(sm, extra_blocks);
85 }
86
87 static inline int dm_sm_get_nr_blocks(struct dm_space_map *sm, dm_block_t *count)
88 {
89 return sm->get_nr_blocks(sm, count);
90 }
91
92 static inline int dm_sm_get_nr_free(struct dm_space_map *sm, dm_block_t *count)
93 {
94 return sm->get_nr_free(sm, count);
95 }
96
97 static inline int dm_sm_get_count(struct dm_space_map *sm, dm_block_t b,
98 uint32_t *result)
99 {
100 return sm->get_count(sm, b, result);
101 }
102
103 static inline int dm_sm_count_is_more_than_one(struct dm_space_map *sm,
104 dm_block_t b, int *result)
105 {
106 return sm->count_is_more_than_one(sm, b, result);
107 }
108
109 static inline int dm_sm_set_count(struct dm_space_map *sm, dm_block_t b,
110 uint32_t count)
111 {
112 return sm->set_count(sm, b, count);
113 }
114
115 static inline int dm_sm_commit(struct dm_space_map *sm)
116 {
117 return sm->commit(sm);
118 }
119
120 static inline int dm_sm_inc_block(struct dm_space_map *sm, dm_block_t b)
121 {
122 return sm->inc_block(sm, b);
123 }
124
125 static inline int dm_sm_dec_block(struct dm_space_map *sm, dm_block_t b)
126 {
127 return sm->dec_block(sm, b);
128 }
129
130 static inline int dm_sm_new_block(struct dm_space_map *sm, dm_block_t *b)
131 {
132 return sm->new_block(sm, b);
133 }
134
135 static inline int dm_sm_root_size(struct dm_space_map *sm, size_t *result)
136 {
137 return sm->root_size(sm, result);
138 }
139
140 static inline int dm_sm_copy_root(struct dm_space_map *sm, void *copy_to_here_le, size_t len)
141 {
142 return sm->copy_root(sm, copy_to_here_le, len);
143 }
144
145 static inline int dm_sm_register_threshold_callback(struct dm_space_map *sm,
146 dm_block_t threshold,
147 dm_sm_threshold_fn fn,
148 void *context)
149 {
150 if (sm->register_threshold_callback)
151 return sm->register_threshold_callback(sm, threshold, fn, context);
152
153 return -EINVAL;
154 }
155
156
157 #endif