Merge commit '7e3488dc6cdcb0c04e1ce167a1a3bfef83b5f2e0'
[unleashed.git] / kernel / fs / zfs / sys / metaslab.h
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1 /*
2 * CDDL HEADER START
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.
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.
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]
19 * CDDL HEADER END
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
26 #ifndef _SYS_METASLAB_H
27 #define _SYS_METASLAB_H
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>
35 #ifdef __cplusplus
36 extern "C" {
37 #endif
40 typedef struct metaslab_ops {
41 uint64_t (*msop_alloc)(metaslab_t *, uint64_t);
42 } metaslab_ops_t;
45 extern metaslab_ops_t *zfs_metaslab_ops;
47 int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t,
48 metaslab_t **);
49 void metaslab_fini(metaslab_t *);
51 void metaslab_load_wait(metaslab_t *);
52 int metaslab_load(metaslab_t *);
53 void metaslab_unload(metaslab_t *);
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 *);
60 #define METASLAB_HINTBP_FAVOR 0x0
61 #define METASLAB_HINTBP_AVOID 0x1
62 #define METASLAB_GANG_HEADER 0x2
63 #define METASLAB_GANG_CHILD 0x4
64 #define METASLAB_ASYNC_ALLOC 0x8
65 #define METASLAB_DONT_THROTTLE 0x10
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 int);
70 int metaslab_alloc_dva(spa_t *, metaslab_class_t *, uint64_t,
71 dva_t *, int, dva_t *, uint64_t, int, zio_alloc_list_t *, int);
72 void metaslab_free(spa_t *, const blkptr_t *, uint64_t, boolean_t);
73 void metaslab_free_concrete(vdev_t *, uint64_t, uint64_t, boolean_t);
74 void metaslab_free_dva(spa_t *, const dva_t *, boolean_t);
75 void metaslab_free_impl_cb(uint64_t, vdev_t *, uint64_t, uint64_t, void *);
76 void metaslab_unalloc_dva(spa_t *, const dva_t *, uint64_t);
77 int metaslab_claim(spa_t *, const blkptr_t *, uint64_t);
78 int metaslab_claim_impl(vdev_t *, uint64_t, uint64_t, uint64_t);
79 void metaslab_check_free(spa_t *, const blkptr_t *);
81 void metaslab_alloc_trace_init(void);
82 void metaslab_alloc_trace_fini(void);
83 void metaslab_trace_init(zio_alloc_list_t *);
84 void metaslab_trace_fini(zio_alloc_list_t *);
86 metaslab_class_t *metaslab_class_create(spa_t *, metaslab_ops_t *);
87 void metaslab_class_destroy(metaslab_class_t *);
88 int metaslab_class_validate(metaslab_class_t *);
89 void metaslab_class_histogram_verify(metaslab_class_t *);
90 uint64_t metaslab_class_fragmentation(metaslab_class_t *);
91 uint64_t metaslab_class_expandable_space(metaslab_class_t *);
92 boolean_t metaslab_class_throttle_reserve(metaslab_class_t *, int, int,
93 zio_t *, int);
94 void metaslab_class_throttle_unreserve(metaslab_class_t *, int, int, zio_t *);
96 void metaslab_class_space_update(metaslab_class_t *, int64_t, int64_t,
97 int64_t, int64_t);
98 uint64_t metaslab_class_get_alloc(metaslab_class_t *);
99 uint64_t metaslab_class_get_space(metaslab_class_t *);
100 uint64_t metaslab_class_get_dspace(metaslab_class_t *);
101 uint64_t metaslab_class_get_deferred(metaslab_class_t *);
103 metaslab_group_t *metaslab_group_create(metaslab_class_t *, vdev_t *, int);
104 void metaslab_group_destroy(metaslab_group_t *);
105 void metaslab_group_activate(metaslab_group_t *);
106 void metaslab_group_passivate(metaslab_group_t *);
107 boolean_t metaslab_group_initialized(metaslab_group_t *);
108 uint64_t metaslab_group_get_space(metaslab_group_t *);
109 void metaslab_group_histogram_verify(metaslab_group_t *);
110 uint64_t metaslab_group_fragmentation(metaslab_group_t *);
111 void metaslab_group_histogram_remove(metaslab_group_t *, metaslab_t *);
112 void metaslab_group_alloc_decrement(spa_t *, uint64_t, void *, int, int,
113 boolean_t);
114 void metaslab_group_alloc_verify(spa_t *, const blkptr_t *, void *, int);
116 #ifdef __cplusplus
118 #endif
120 #endif /* _SYS_METASLAB_H */