blob: 1b666c84a1935d5f3c14578b43b47bf7e517e6cf (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2023 Red Hat
*/
#ifndef VDO_LOGICAL_ZONE_H
#define VDO_LOGICAL_ZONE_H
#include <linux/list.h>
#include "admin-state.h"
#include "int-map.h"
#include "types.h"
struct physical_zone;
struct logical_zone {
/* The completion for flush notifications */
struct vdo_completion completion;
/* The owner of this zone */
struct logical_zones *zones;
/* Which logical zone this is */
zone_count_t zone_number;
/* The thread id for this zone */
thread_id_t thread_id;
/* In progress operations keyed by LBN */
struct int_map *lbn_operations;
/* The logical to physical map */
struct block_map_zone *block_map_zone;
/* The current flush generation */
sequence_number_t flush_generation;
/*
* The oldest active generation in this zone. This is mutated only on the logical zone
* thread but is queried from the flusher thread.
*/
sequence_number_t oldest_active_generation;
/* The number of IOs in the current flush generation */
block_count_t ios_in_flush_generation;
/* The youngest generation of the current notification */
sequence_number_t notification_generation;
/* Whether a notification is in progress */
bool notifying;
/* The queue of active data write VIOs */
struct list_head write_vios;
/* The administrative state of the zone */
struct admin_state state;
/* The physical zone from which to allocate */
struct physical_zone *allocation_zone;
/* The number of allocations done from the current allocation_zone */
block_count_t allocation_count;
/* The next zone */
struct logical_zone *next;
};
struct logical_zones {
/* The vdo whose zones these are */
struct vdo *vdo;
/* The manager for administrative actions */
struct action_manager *manager;
/* The number of zones */
zone_count_t zone_count;
/* The logical zones themselves */
struct logical_zone zones[];
};
int __must_check vdo_make_logical_zones(struct vdo *vdo,
struct logical_zones **zones_ptr);
void vdo_free_logical_zones(struct logical_zones *zones);
void vdo_drain_logical_zones(struct logical_zones *zones,
const struct admin_state_code *operation,
struct vdo_completion *completion);
void vdo_resume_logical_zones(struct logical_zones *zones,
struct vdo_completion *parent);
void vdo_increment_logical_zone_flush_generation(struct logical_zone *zone,
sequence_number_t expected_generation);
void vdo_acquire_flush_generation_lock(struct data_vio *data_vio);
void vdo_release_flush_generation_lock(struct data_vio *data_vio);
struct physical_zone * __must_check vdo_get_next_allocation_zone(struct logical_zone *zone);
void vdo_dump_logical_zone(const struct logical_zone *zone);
#endif /* VDO_LOGICAL_ZONE_H */
|
