]>
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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) 2012 by Delphix. All rights reserved.
26 #ifndef _SYS_METASLAB_H
27 #define _SYS_METASLAB_H
30 #include <sys/space_map.h>
39 extern space_map_ops_t
*zfs_metaslab_ops
;
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
);
46 extern void metaslab_sync_reassess(metaslab_group_t
*mg
);
48 #define METASLAB_HINTBP_FAVOR 0x0
49 #define METASLAB_HINTBP_AVOID 0x1
50 #define METASLAB_GANG_HEADER 0x2
51 #define METASLAB_GANG_CHILD 0x4
52 #define METASLAB_GANG_AVOID 0x8
53 #define METASLAB_FASTWRITE 0x10
55 extern int metaslab_alloc(spa_t
*spa
, metaslab_class_t
*mc
, uint64_t psize
,
56 blkptr_t
*bp
, int ncopies
, uint64_t txg
, blkptr_t
*hintbp
, int flags
);
57 extern void metaslab_free(spa_t
*spa
, const blkptr_t
*bp
, uint64_t txg
,
59 extern int metaslab_claim(spa_t
*spa
, const blkptr_t
*bp
, uint64_t txg
);
60 extern void metaslab_check_free(spa_t
*spa
, const blkptr_t
*bp
);
61 extern void metaslab_fastwrite_mark(spa_t
*spa
, const blkptr_t
*bp
);
62 extern void metaslab_fastwrite_unmark(spa_t
*spa
, const blkptr_t
*bp
);
64 extern metaslab_class_t
*metaslab_class_create(spa_t
*spa
,
65 space_map_ops_t
*ops
);
66 extern void metaslab_class_destroy(metaslab_class_t
*mc
);
67 extern int metaslab_class_validate(metaslab_class_t
*mc
);
69 extern void metaslab_class_space_update(metaslab_class_t
*mc
,
70 int64_t alloc_delta
, int64_t defer_delta
,
71 int64_t space_delta
, int64_t dspace_delta
);
72 extern uint64_t metaslab_class_get_alloc(metaslab_class_t
*mc
);
73 extern uint64_t metaslab_class_get_space(metaslab_class_t
*mc
);
74 extern uint64_t metaslab_class_get_dspace(metaslab_class_t
*mc
);
75 extern uint64_t metaslab_class_get_deferred(metaslab_class_t
*mc
);
77 extern metaslab_group_t
*metaslab_group_create(metaslab_class_t
*mc
,
79 extern void metaslab_group_destroy(metaslab_group_t
*mg
);
80 extern void metaslab_group_activate(metaslab_group_t
*mg
);
81 extern void metaslab_group_passivate(metaslab_group_t
*mg
);
87 #endif /* _SYS_METASLAB_H */