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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, 2014 by Delphix. All rights reserved.
26 #ifndef _SYS_METASLAB_H
27 #define _SYS_METASLAB_H
30 #include <sys/space_map.h>
39 typedef struct metaslab_ops
{
40 uint64_t (*msop_alloc
)(metaslab_t
*msp
, uint64_t size
);
43 extern metaslab_ops_t
*zfs_metaslab_ops
;
45 int metaslab_init(metaslab_group_t
*, uint64_t, uint64_t, uint64_t,
47 void metaslab_fini(metaslab_t
*);
49 void metaslab_load_wait(metaslab_t
*);
50 int metaslab_load(metaslab_t
*);
51 void metaslab_unload(metaslab_t
*);
53 void metaslab_sync(metaslab_t
*, uint64_t);
54 void metaslab_sync_done(metaslab_t
*, uint64_t);
55 void metaslab_sync_reassess(metaslab_group_t
*);
56 uint64_t metaslab_block_maxsize(metaslab_t
*);
58 #define METASLAB_HINTBP_FAVOR 0x0
59 #define METASLAB_HINTBP_AVOID 0x1
60 #define METASLAB_GANG_HEADER 0x2
61 #define METASLAB_GANG_CHILD 0x4
62 #define METASLAB_GANG_AVOID 0x8
63 #define METASLAB_FASTWRITE 0x10
65 int metaslab_alloc(spa_t
*, metaslab_class_t
*, uint64_t,
66 blkptr_t
*, int, uint64_t, blkptr_t
*, int);
67 void metaslab_free(spa_t
*, const blkptr_t
*, uint64_t, boolean_t
);
68 int metaslab_claim(spa_t
*, const blkptr_t
*, uint64_t);
69 void metaslab_check_free(spa_t
*, const blkptr_t
*);
70 void metaslab_fastwrite_mark(spa_t
*, const blkptr_t
*);
71 void metaslab_fastwrite_unmark(spa_t
*, const blkptr_t
*);
73 metaslab_class_t
*metaslab_class_create(spa_t
*, metaslab_ops_t
*);
74 void metaslab_class_destroy(metaslab_class_t
*);
75 int metaslab_class_validate(metaslab_class_t
*);
76 void metaslab_class_histogram_verify(metaslab_class_t
*);
77 uint64_t metaslab_class_fragmentation(metaslab_class_t
*);
78 uint64_t metaslab_class_expandable_space(metaslab_class_t
*);
80 void metaslab_class_space_update(metaslab_class_t
*, int64_t, int64_t,
82 uint64_t metaslab_class_get_alloc(metaslab_class_t
*);
83 uint64_t metaslab_class_get_space(metaslab_class_t
*);
84 uint64_t metaslab_class_get_dspace(metaslab_class_t
*);
85 uint64_t metaslab_class_get_deferred(metaslab_class_t
*);
87 metaslab_group_t
*metaslab_group_create(metaslab_class_t
*, vdev_t
*);
88 void metaslab_group_destroy(metaslab_group_t
*);
89 void metaslab_group_activate(metaslab_group_t
*);
90 void metaslab_group_passivate(metaslab_group_t
*);
91 uint64_t metaslab_group_get_space(metaslab_group_t
*);
92 void metaslab_group_histogram_verify(metaslab_group_t
*);
93 uint64_t metaslab_group_fragmentation(metaslab_group_t
*);
94 void metaslab_group_histogram_remove(metaslab_group_t
*, metaslab_t
*);
100 #endif /* _SYS_METASLAB_H */