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34dc7c2f BB |
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 | /* | |
428870ff | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
6d974228 | 23 | * Copyright (c) 2011 by Delphix. All rights reserved. |
34dc7c2f BB |
24 | */ |
25 | ||
26 | #ifndef _SYS_METASLAB_H | |
27 | #define _SYS_METASLAB_H | |
28 | ||
34dc7c2f BB |
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 | ||
9babb374 BB |
39 | extern space_map_ops_t *zfs_metaslab_ops; |
40 | ||
34dc7c2f BB |
41 | extern metaslab_t *metaslab_init(metaslab_group_t *mg, space_map_obj_t *smo, |
42 | uint64_t start, uint64_t size, uint64_t txg); | |
43 | extern void metaslab_fini(metaslab_t *msp); | |
44 | extern void metaslab_sync(metaslab_t *msp, uint64_t txg); | |
45 | extern void metaslab_sync_done(metaslab_t *msp, uint64_t txg); | |
428870ff | 46 | extern void metaslab_sync_reassess(metaslab_group_t *mg); |
34dc7c2f | 47 | |
b128c09f BB |
48 | #define METASLAB_HINTBP_FAVOR 0x0 |
49 | #define METASLAB_HINTBP_AVOID 0x1 | |
50 | #define METASLAB_GANG_HEADER 0x2 | |
6d974228 GW |
51 | #define METASLAB_GANG_CHILD 0x4 |
52 | #define METASLAB_GANG_AVOID 0x8 | |
920dd524 | 53 | #define METASLAB_FASTWRITE 0x10 |
b128c09f | 54 | |
34dc7c2f | 55 | extern int metaslab_alloc(spa_t *spa, metaslab_class_t *mc, uint64_t psize, |
b128c09f | 56 | blkptr_t *bp, int ncopies, uint64_t txg, blkptr_t *hintbp, int flags); |
34dc7c2f BB |
57 | extern void metaslab_free(spa_t *spa, const blkptr_t *bp, uint64_t txg, |
58 | boolean_t now); | |
59 | extern int metaslab_claim(spa_t *spa, const blkptr_t *bp, uint64_t txg); | |
920dd524 ED |
60 | extern void metaslab_fastwrite_mark(spa_t *spa, const blkptr_t *bp); |
61 | extern void metaslab_fastwrite_unmark(spa_t *spa, const blkptr_t *bp); | |
34dc7c2f | 62 | |
428870ff BB |
63 | extern metaslab_class_t *metaslab_class_create(spa_t *spa, |
64 | space_map_ops_t *ops); | |
34dc7c2f | 65 | extern void metaslab_class_destroy(metaslab_class_t *mc); |
428870ff BB |
66 | extern int metaslab_class_validate(metaslab_class_t *mc); |
67 | ||
68 | extern void metaslab_class_space_update(metaslab_class_t *mc, | |
69 | int64_t alloc_delta, int64_t defer_delta, | |
70 | int64_t space_delta, int64_t dspace_delta); | |
71 | extern uint64_t metaslab_class_get_alloc(metaslab_class_t *mc); | |
72 | extern uint64_t metaslab_class_get_space(metaslab_class_t *mc); | |
73 | extern uint64_t metaslab_class_get_dspace(metaslab_class_t *mc); | |
74 | extern uint64_t metaslab_class_get_deferred(metaslab_class_t *mc); | |
34dc7c2f BB |
75 | |
76 | extern metaslab_group_t *metaslab_group_create(metaslab_class_t *mc, | |
77 | vdev_t *vd); | |
78 | extern void metaslab_group_destroy(metaslab_group_t *mg); | |
428870ff BB |
79 | extern void metaslab_group_activate(metaslab_group_t *mg); |
80 | extern void metaslab_group_passivate(metaslab_group_t *mg); | |
34dc7c2f BB |
81 | |
82 | #ifdef __cplusplus | |
83 | } | |
84 | #endif | |
85 | ||
86 | #endif /* _SYS_METASLAB_H */ |