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1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
22 | * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. | |
23 | * Copyright (c) 2012, 2014 by Delphix. All rights reserved. | |
24 | */ | |
25 | ||
26 | #ifndef _SYS_BPOBJ_H | |
27 | #define _SYS_BPOBJ_H | |
28 | ||
29 | #include <sys/dmu.h> | |
30 | #include <sys/spa.h> | |
31 | #include <sys/txg.h> | |
32 | #include <sys/zio.h> | |
33 | #include <sys/zfs_context.h> | |
34 | ||
35 | #ifdef __cplusplus | |
36 | extern "C" { | |
37 | #endif | |
38 | ||
39 | typedef struct bpobj_phys { | |
40 | /* | |
41 | * This is the bonus buffer for the dead lists. The object's | |
42 | * contents is an array of bpo_entries blkptr_t's, representing | |
43 | * a total of bpo_bytes physical space. | |
44 | */ | |
45 | uint64_t bpo_num_blkptrs; | |
46 | uint64_t bpo_bytes; | |
47 | uint64_t bpo_comp; | |
48 | uint64_t bpo_uncomp; | |
49 | uint64_t bpo_subobjs; | |
50 | uint64_t bpo_num_subobjs; | |
51 | } bpobj_phys_t; | |
52 | ||
53 | #define BPOBJ_SIZE_V0 (2 * sizeof (uint64_t)) | |
54 | #define BPOBJ_SIZE_V1 (4 * sizeof (uint64_t)) | |
55 | ||
56 | typedef struct bpobj { | |
57 | kmutex_t bpo_lock; | |
58 | objset_t *bpo_os; | |
59 | uint64_t bpo_object; | |
60 | int bpo_epb; | |
61 | uint8_t bpo_havecomp; | |
62 | uint8_t bpo_havesubobj; | |
63 | bpobj_phys_t *bpo_phys; | |
64 | dmu_buf_t *bpo_dbuf; | |
65 | dmu_buf_t *bpo_cached_dbuf; | |
66 | } bpobj_t; | |
67 | ||
68 | typedef int bpobj_itor_t(void *arg, const blkptr_t *bp, dmu_tx_t *tx); | |
69 | ||
70 | uint64_t bpobj_alloc(objset_t *mos, int blocksize, dmu_tx_t *tx); | |
71 | uint64_t bpobj_alloc_empty(objset_t *os, int blocksize, dmu_tx_t *tx); | |
72 | void bpobj_free(objset_t *os, uint64_t obj, dmu_tx_t *tx); | |
73 | void bpobj_decr_empty(objset_t *os, dmu_tx_t *tx); | |
74 | ||
75 | int bpobj_open(bpobj_t *bpo, objset_t *mos, uint64_t object); | |
76 | void bpobj_close(bpobj_t *bpo); | |
77 | ||
78 | int bpobj_iterate(bpobj_t *bpo, bpobj_itor_t func, void *arg, dmu_tx_t *tx); | |
79 | int bpobj_iterate_nofree(bpobj_t *bpo, bpobj_itor_t func, void *, dmu_tx_t *); | |
80 | ||
81 | void bpobj_enqueue_subobj(bpobj_t *bpo, uint64_t subobj, dmu_tx_t *tx); | |
82 | void bpobj_enqueue(bpobj_t *bpo, const blkptr_t *bp, dmu_tx_t *tx); | |
83 | ||
84 | int bpobj_space(bpobj_t *bpo, | |
85 | uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); | |
86 | int bpobj_space_range(bpobj_t *bpo, uint64_t mintxg, uint64_t maxtxg, | |
87 | uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); | |
88 | ||
89 | #ifdef __cplusplus | |
90 | } | |
91 | #endif | |
92 | ||
93 | #endif /* _SYS_BPOBJ_H */ |