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) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
23 | * Copyright (c) 2011, 2016 by Delphix. All rights reserved. |
24 | */ |
25 | |
26 | #ifndef _SYS_METASLAB_H |
27 | #define _SYS_METASLAB_H |
28 | |
29 | #include <sys/spa.h> |
30 | #include <sys/space_map.h> |
31 | #include <sys/txg.h> |
32 | #include <sys/zio.h> |
33 | #include <sys/avl.h> |
34 | |
35 | #ifdef __cplusplus |
36 | extern "C" { |
37 | #endif |
38 | |
39 | |
40 | typedef struct metaslab_ops { |
41 | uint64_t (*msop_alloc)(metaslab_t *, uint64_t); |
42 | } metaslab_ops_t; |
43 | |
44 | |
45 | extern metaslab_ops_t *zfs_metaslab_ops; |
46 | |
47 | int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t, |
48 | metaslab_t **); |
49 | void metaslab_fini(metaslab_t *); |
50 | |
51 | void metaslab_load_wait(metaslab_t *); |
52 | int metaslab_load(metaslab_t *); |
53 | void metaslab_unload(metaslab_t *); |
54 | |
55 | void metaslab_sync(metaslab_t *, uint64_t); |
56 | void metaslab_sync_done(metaslab_t *, uint64_t); |
57 | void metaslab_sync_reassess(metaslab_group_t *); |
58 | uint64_t metaslab_block_maxsize(metaslab_t *); |
59 | |
60 | #define METASLAB_HINTBP_FAVOR 0x0 |
61 | #define METASLAB_HINTBP_AVOID 0x1 |
62 | #define 0x2 |
63 | #define METASLAB_GANG_CHILD 0x4 |
64 | #define METASLAB_ASYNC_ALLOC 0x8 |
65 | #define METASLAB_DONT_THROTTLE 0x10 |
66 | |
67 | int metaslab_alloc(spa_t *, metaslab_class_t *, uint64_t, |
68 | blkptr_t *, int, uint64_t, blkptr_t *, int, zio_alloc_list_t *, zio_t *); |
69 | void metaslab_free(spa_t *, const blkptr_t *, uint64_t, boolean_t); |
70 | int metaslab_claim(spa_t *, const blkptr_t *, uint64_t); |
71 | void metaslab_check_free(spa_t *, const blkptr_t *); |
72 | |
73 | void metaslab_alloc_trace_init(void); |
74 | void metaslab_alloc_trace_fini(void); |
75 | void metaslab_trace_init(zio_alloc_list_t *); |
76 | void metaslab_trace_fini(zio_alloc_list_t *); |
77 | |
78 | metaslab_class_t *metaslab_class_create(spa_t *, metaslab_ops_t *); |
79 | void metaslab_class_destroy(metaslab_class_t *); |
80 | int metaslab_class_validate(metaslab_class_t *); |
81 | void metaslab_class_histogram_verify(metaslab_class_t *); |
82 | uint64_t metaslab_class_fragmentation(metaslab_class_t *); |
83 | uint64_t metaslab_class_expandable_space(metaslab_class_t *); |
84 | boolean_t metaslab_class_throttle_reserve(metaslab_class_t *, int, |
85 | zio_t *, int); |
86 | void metaslab_class_throttle_unreserve(metaslab_class_t *, int, zio_t *); |
87 | |
88 | void metaslab_class_space_update(metaslab_class_t *, int64_t, int64_t, |
89 | int64_t, int64_t); |
90 | uint64_t metaslab_class_get_alloc(metaslab_class_t *); |
91 | uint64_t metaslab_class_get_space(metaslab_class_t *); |
92 | uint64_t metaslab_class_get_dspace(metaslab_class_t *); |
93 | uint64_t metaslab_class_get_deferred(metaslab_class_t *); |
94 | uint64_t metaslab_class_get_minblocksize(metaslab_class_t *mc); |
95 | |
96 | metaslab_group_t *metaslab_group_create(metaslab_class_t *, vdev_t *); |
97 | void metaslab_group_destroy(metaslab_group_t *); |
98 | void metaslab_group_activate(metaslab_group_t *); |
99 | void metaslab_group_passivate(metaslab_group_t *); |
100 | boolean_t metaslab_group_initialized(metaslab_group_t *); |
101 | uint64_t metaslab_group_get_space(metaslab_group_t *); |
102 | void metaslab_group_histogram_verify(metaslab_group_t *); |
103 | uint64_t metaslab_group_fragmentation(metaslab_group_t *); |
104 | void metaslab_group_histogram_remove(metaslab_group_t *, metaslab_t *); |
105 | void metaslab_group_alloc_decrement(spa_t *, uint64_t, void *, int); |
106 | void metaslab_group_alloc_verify(spa_t *, const blkptr_t *, void *); |
107 | |
108 | #ifdef __cplusplus |
109 | } |
110 | #endif |
111 | |
112 | #endif /* _SYS_METASLAB_H */ |
113 | |