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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or https://opensource.org/licenses/CDDL-1.0.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 2019 by Delphix. All rights reserved.
*/
#ifndef _SYS_BPOBJ_H
#define _SYS_BPOBJ_H
#include <sys/dmu.h>
#include <sys/spa.h>
#include <sys/txg.h>
#include <sys/zio.h>
#include <sys/zfs_context.h>
#include <sys/bplist.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct bpobj_phys {
/*
* This is the bonus buffer for the dead lists. The object's
* contents is an array of bpo_entries blkptr_t's, representing
* a total of bpo_bytes physical space.
*/
uint64_t bpo_num_blkptrs;
uint64_t bpo_bytes;
uint64_t bpo_comp;
uint64_t bpo_uncomp;
uint64_t bpo_subobjs;
uint64_t bpo_num_subobjs;
uint64_t bpo_num_freed;
} bpobj_phys_t;
#define BPOBJ_SIZE_V0 (2 * sizeof (uint64_t))
#define BPOBJ_SIZE_V1 (4 * sizeof (uint64_t))
#define BPOBJ_SIZE_V2 (6 * sizeof (uint64_t))
typedef struct bpobj {
kmutex_t bpo_lock;
objset_t *bpo_os;
uint64_t bpo_object;
uint32_t bpo_epb;
uint8_t bpo_havecomp;
uint8_t bpo_havesubobj;
uint8_t bpo_havefreed;
bpobj_phys_t *bpo_phys;
dmu_buf_t *bpo_dbuf;
dmu_buf_t *bpo_cached_dbuf;
} bpobj_t;
typedef int bpobj_itor_t(void *arg, const blkptr_t *bp, boolean_t bp_freed,
dmu_tx_t *tx);
uint64_t bpobj_alloc(objset_t *mos, int blocksize, dmu_tx_t *tx);
uint64_t bpobj_alloc_empty(objset_t *os, int blocksize, dmu_tx_t *tx);
void bpobj_free(objset_t *os, uint64_t obj, dmu_tx_t *tx);
void bpobj_decr_empty(objset_t *os, dmu_tx_t *tx);
int bpobj_open(bpobj_t *bpo, objset_t *mos, uint64_t object);
void bpobj_close(bpobj_t *bpo);
boolean_t bpobj_is_open(const bpobj_t *bpo);
int bpobj_iterate(bpobj_t *bpo, bpobj_itor_t func, void *arg, dmu_tx_t *tx);
int bpobj_iterate_nofree(bpobj_t *bpo, bpobj_itor_t func, void *, uint64_t *);
int livelist_bpobj_iterate_from_nofree(bpobj_t *bpo, bpobj_itor_t func,
void *arg, int64_t start);
void bpobj_enqueue_subobj(bpobj_t *bpo, uint64_t subobj, dmu_tx_t *tx);
void bpobj_prefetch_subobj(bpobj_t *bpo, uint64_t subobj);
void bpobj_enqueue(bpobj_t *bpo, const blkptr_t *bp, boolean_t bp_freed,
dmu_tx_t *tx);
int bpobj_space(bpobj_t *bpo,
uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
int bpobj_space_range(bpobj_t *bpo, uint64_t mintxg, uint64_t maxtxg,
uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
boolean_t bpobj_is_empty(bpobj_t *bpo);
int bplist_append_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed,
dmu_tx_t *tx);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_BPOBJ_H */
|
