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space_map.h (177698) space_map.h (209962)
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

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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/*
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

--- 5 unchanged lines hidden (view full) ---

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/*
22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef _SYS_SPACE_MAP_H
27#define _SYS_SPACE_MAP_H
28
23 * Use is subject to license terms.
24 */
25
26#ifndef _SYS_SPACE_MAP_H
27#define _SYS_SPACE_MAP_H
28
29#pragma ident "%Z%%M% %I% %E% SMI"
30
31#include <sys/avl.h>
32#include <sys/dmu.h>
33
34#ifdef __cplusplus
35extern "C" {
36#endif
37
38typedef struct space_map_ops space_map_ops_t;

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43 uint64_t sm_start; /* start of map */
44 uint64_t sm_size; /* size of map */
45 uint8_t sm_shift; /* unit shift */
46 uint8_t sm_pad[3]; /* unused */
47 uint8_t sm_loaded; /* map loaded? */
48 uint8_t sm_loading; /* map loading? */
49 kcondvar_t sm_load_cv; /* map load completion */
50 space_map_ops_t *sm_ops; /* space map block picker ops vector */
29#include <sys/avl.h>
30#include <sys/dmu.h>
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
36typedef struct space_map_ops space_map_ops_t;

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41 uint64_t sm_start; /* start of map */
42 uint64_t sm_size; /* size of map */
43 uint8_t sm_shift; /* unit shift */
44 uint8_t sm_pad[3]; /* unused */
45 uint8_t sm_loaded; /* map loaded? */
46 uint8_t sm_loading; /* map loading? */
47 kcondvar_t sm_load_cv; /* map load completion */
48 space_map_ops_t *sm_ops; /* space map block picker ops vector */
49 avl_tree_t *sm_pp_root; /* picker-private AVL tree */
51 void *sm_ppd; /* picker-private data */
52 kmutex_t *sm_lock; /* pointer to lock that protects map */
53} space_map_t;
54
55typedef struct space_seg {
56 avl_node_t ss_node; /* AVL node */
50 void *sm_ppd; /* picker-private data */
51 kmutex_t *sm_lock; /* pointer to lock that protects map */
52} space_map_t;
53
54typedef struct space_seg {
55 avl_node_t ss_node; /* AVL node */
56 avl_node_t ss_pp_node; /* AVL picker-private node */
57 uint64_t ss_start; /* starting offset of this segment */
58 uint64_t ss_end; /* ending offset (non-inclusive) */
59} space_seg_t;
60
57 uint64_t ss_start; /* starting offset of this segment */
58 uint64_t ss_end; /* ending offset (non-inclusive) */
59} space_seg_t;
60
61typedef struct space_ref {
62 avl_node_t sr_node; /* AVL node */
63 uint64_t sr_offset; /* offset (start or end) */
64 int64_t sr_refcnt; /* associated reference count */
65} space_ref_t;
66
61typedef struct space_map_obj {
62 uint64_t smo_object; /* on-disk space map object */
63 uint64_t smo_objsize; /* size of the object */
64 uint64_t smo_alloc; /* space allocated from the map */
65} space_map_obj_t;
66
67struct space_map_ops {
68 void (*smop_load)(space_map_t *sm);
69 void (*smop_unload)(space_map_t *sm);
70 uint64_t (*smop_alloc)(space_map_t *sm, uint64_t size);
71 void (*smop_claim)(space_map_t *sm, uint64_t start, uint64_t size);
72 void (*smop_free)(space_map_t *sm, uint64_t start, uint64_t size);
67typedef struct space_map_obj {
68 uint64_t smo_object; /* on-disk space map object */
69 uint64_t smo_objsize; /* size of the object */
70 uint64_t smo_alloc; /* space allocated from the map */
71} space_map_obj_t;
72
73struct space_map_ops {
74 void (*smop_load)(space_map_t *sm);
75 void (*smop_unload)(space_map_t *sm);
76 uint64_t (*smop_alloc)(space_map_t *sm, uint64_t size);
77 void (*smop_claim)(space_map_t *sm, uint64_t start, uint64_t size);
78 void (*smop_free)(space_map_t *sm, uint64_t start, uint64_t size);
79 uint64_t (*smop_max)(space_map_t *sm);
73};
74
75/*
76 * debug entry
77 *
78 * 1 3 10 50
79 * ,---+--------+------------+---------------------------------.
80 * | 1 | action | syncpass | txg (lower bits) |

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128
129typedef void space_map_func_t(space_map_t *sm, uint64_t start, uint64_t size);
130
131extern void space_map_create(space_map_t *sm, uint64_t start, uint64_t size,
132 uint8_t shift, kmutex_t *lp);
133extern void space_map_destroy(space_map_t *sm);
134extern void space_map_add(space_map_t *sm, uint64_t start, uint64_t size);
135extern void space_map_remove(space_map_t *sm, uint64_t start, uint64_t size);
80};
81
82/*
83 * debug entry
84 *
85 * 1 3 10 50
86 * ,---+--------+------------+---------------------------------.
87 * | 1 | action | syncpass | txg (lower bits) |

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135
136typedef void space_map_func_t(space_map_t *sm, uint64_t start, uint64_t size);
137
138extern void space_map_create(space_map_t *sm, uint64_t start, uint64_t size,
139 uint8_t shift, kmutex_t *lp);
140extern void space_map_destroy(space_map_t *sm);
141extern void space_map_add(space_map_t *sm, uint64_t start, uint64_t size);
142extern void space_map_remove(space_map_t *sm, uint64_t start, uint64_t size);
136extern int space_map_contains(space_map_t *sm, uint64_t start, uint64_t size);
143extern boolean_t space_map_contains(space_map_t *sm,
144 uint64_t start, uint64_t size);
137extern void space_map_vacate(space_map_t *sm,
138 space_map_func_t *func, space_map_t *mdest);
139extern void space_map_walk(space_map_t *sm,
140 space_map_func_t *func, space_map_t *mdest);
145extern void space_map_vacate(space_map_t *sm,
146 space_map_func_t *func, space_map_t *mdest);
147extern void space_map_walk(space_map_t *sm,
148 space_map_func_t *func, space_map_t *mdest);
141extern void space_map_excise(space_map_t *sm, uint64_t start, uint64_t size);
142extern void space_map_union(space_map_t *smd, space_map_t *sms);
143
144extern void space_map_load_wait(space_map_t *sm);
145extern int space_map_load(space_map_t *sm, space_map_ops_t *ops,
146 uint8_t maptype, space_map_obj_t *smo, objset_t *os);
147extern void space_map_unload(space_map_t *sm);
148
149extern uint64_t space_map_alloc(space_map_t *sm, uint64_t size);
150extern void space_map_claim(space_map_t *sm, uint64_t start, uint64_t size);
151extern void space_map_free(space_map_t *sm, uint64_t start, uint64_t size);
149
150extern void space_map_load_wait(space_map_t *sm);
151extern int space_map_load(space_map_t *sm, space_map_ops_t *ops,
152 uint8_t maptype, space_map_obj_t *smo, objset_t *os);
153extern void space_map_unload(space_map_t *sm);
154
155extern uint64_t space_map_alloc(space_map_t *sm, uint64_t size);
156extern void space_map_claim(space_map_t *sm, uint64_t start, uint64_t size);
157extern void space_map_free(space_map_t *sm, uint64_t start, uint64_t size);
158extern uint64_t space_map_maxsize(space_map_t *sm);
152
153extern void space_map_sync(space_map_t *sm, uint8_t maptype,
154 space_map_obj_t *smo, objset_t *os, dmu_tx_t *tx);
155extern void space_map_truncate(space_map_obj_t *smo,
156 objset_t *os, dmu_tx_t *tx);
157
159
160extern void space_map_sync(space_map_t *sm, uint8_t maptype,
161 space_map_obj_t *smo, objset_t *os, dmu_tx_t *tx);
162extern void space_map_truncate(space_map_obj_t *smo,
163 objset_t *os, dmu_tx_t *tx);
164
165extern void space_map_ref_create(avl_tree_t *t);
166extern void space_map_ref_destroy(avl_tree_t *t);
167extern void space_map_ref_add_seg(avl_tree_t *t,
168 uint64_t start, uint64_t end, int64_t refcnt);
169extern void space_map_ref_add_map(avl_tree_t *t,
170 space_map_t *sm, int64_t refcnt);
171extern void space_map_ref_generate_map(avl_tree_t *t,
172 space_map_t *sm, int64_t minref);
173
158#ifdef __cplusplus
159}
160#endif
161
162#endif /* _SYS_SPACE_MAP_H */
174#ifdef __cplusplus
175}
176#endif
177
178#endif /* _SYS_SPACE_MAP_H */