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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]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
24 * Copyright (c) 2017, Intel Corporation.
27 #ifndef _SYS_METASLAB_H
28 #define _SYS_METASLAB_H
31 #include <sys/space_map.h>
41 typedef struct metaslab_ops
{
42 uint64_t (*msop_alloc
)(metaslab_t
*, uint64_t);
46 extern metaslab_ops_t
*zfs_metaslab_ops
;
48 int metaslab_init(metaslab_group_t
*, uint64_t, uint64_t, uint64_t,
50 void metaslab_fini(metaslab_t
*);
52 void metaslab_load_wait(metaslab_t
*);
53 int metaslab_load(metaslab_t
*);
54 void metaslab_unload(metaslab_t
*);
56 void metaslab_sync(metaslab_t
*, uint64_t);
57 void metaslab_sync_done(metaslab_t
*, uint64_t);
58 void metaslab_sync_reassess(metaslab_group_t
*);
59 uint64_t metaslab_block_maxsize(metaslab_t
*);
62 * metaslab alloc flags
64 #define METASLAB_HINTBP_FAVOR 0x0
65 #define METASLAB_HINTBP_AVOID 0x1
66 #define METASLAB_GANG_HEADER 0x2
67 #define METASLAB_GANG_CHILD 0x4
68 #define METASLAB_ASYNC_ALLOC 0x8
69 #define METASLAB_DONT_THROTTLE 0x10
70 #define METASLAB_MUST_RESERVE 0x20
71 #define METASLAB_FASTWRITE 0x40
73 int metaslab_alloc(spa_t
*, metaslab_class_t
*, uint64_t,
74 blkptr_t
*, int, uint64_t, blkptr_t
*, int, zio_alloc_list_t
*, zio_t
*,
76 int metaslab_alloc_dva(spa_t
*, metaslab_class_t
*, uint64_t,
77 dva_t
*, int, dva_t
*, uint64_t, int, zio_alloc_list_t
*, int);
78 void metaslab_free(spa_t
*, const blkptr_t
*, uint64_t, boolean_t
);
79 void metaslab_free_concrete(vdev_t
*, uint64_t, uint64_t, boolean_t
);
80 void metaslab_free_dva(spa_t
*, const dva_t
*, boolean_t
);
81 void metaslab_free_impl_cb(uint64_t, vdev_t
*, uint64_t, uint64_t, void *);
82 void metaslab_unalloc_dva(spa_t
*, const dva_t
*, uint64_t);
83 int metaslab_claim(spa_t
*, const blkptr_t
*, uint64_t);
84 int metaslab_claim_impl(vdev_t
*, uint64_t, uint64_t, uint64_t);
85 void metaslab_check_free(spa_t
*, const blkptr_t
*);
86 void metaslab_fastwrite_mark(spa_t
*, const blkptr_t
*);
87 void metaslab_fastwrite_unmark(spa_t
*, const blkptr_t
*);
89 void metaslab_alloc_trace_init(void);
90 void metaslab_alloc_trace_fini(void);
91 void metaslab_trace_init(zio_alloc_list_t
*);
92 void metaslab_trace_fini(zio_alloc_list_t
*);
94 metaslab_class_t
*metaslab_class_create(spa_t
*, metaslab_ops_t
*);
95 void metaslab_class_destroy(metaslab_class_t
*);
96 int metaslab_class_validate(metaslab_class_t
*);
97 void metaslab_class_histogram_verify(metaslab_class_t
*);
98 uint64_t metaslab_class_fragmentation(metaslab_class_t
*);
99 uint64_t metaslab_class_expandable_space(metaslab_class_t
*);
100 boolean_t
metaslab_class_throttle_reserve(metaslab_class_t
*, int, int,
102 void metaslab_class_throttle_unreserve(metaslab_class_t
*, int, int, zio_t
*);
104 uint64_t metaslab_class_get_alloc(metaslab_class_t
*);
105 uint64_t metaslab_class_get_space(metaslab_class_t
*);
106 uint64_t metaslab_class_get_dspace(metaslab_class_t
*);
107 uint64_t metaslab_class_get_deferred(metaslab_class_t
*);
109 metaslab_group_t
*metaslab_group_create(metaslab_class_t
*, vdev_t
*, int);
110 void metaslab_group_destroy(metaslab_group_t
*);
111 void metaslab_group_activate(metaslab_group_t
*);
112 void metaslab_group_passivate(metaslab_group_t
*);
113 boolean_t
metaslab_group_initialized(metaslab_group_t
*);
114 uint64_t metaslab_group_get_space(metaslab_group_t
*);
115 void metaslab_group_histogram_verify(metaslab_group_t
*);
116 uint64_t metaslab_group_fragmentation(metaslab_group_t
*);
117 void metaslab_group_histogram_remove(metaslab_group_t
*, metaslab_t
*);
118 void metaslab_group_alloc_decrement(spa_t
*, uint64_t, void *, int, int,
120 void metaslab_group_alloc_verify(spa_t
*, const blkptr_t
*, void *, int);
126 #endif /* _SYS_METASLAB_H */