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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 | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
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] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. | |
23 | */ | |
24 | ||
25 | #ifndef _SYS_DSL_POOL_H | |
26 | #define _SYS_DSL_POOL_H | |
27 | ||
28 | #include <sys/spa.h> | |
29 | #include <sys/txg.h> | |
30 | #include <sys/txg_impl.h> | |
31 | #include <sys/zfs_context.h> | |
32 | #include <sys/zio.h> | |
33 | #include <sys/dnode.h> | |
34 | #include <sys/ddt.h> | |
35 | #include <sys/arc.h> | |
36 | #include <sys/bpobj.h> | |
37 | ||
38 | #ifdef __cplusplus | |
39 | extern "C" { | |
40 | #endif | |
41 | ||
42 | struct objset; | |
43 | struct dsl_dir; | |
44 | struct dsl_dataset; | |
45 | struct dsl_pool; | |
46 | struct dmu_tx; | |
47 | struct dsl_scan; | |
48 | ||
49 | /* These macros are for indexing into the zfs_all_blkstats_t. */ | |
50 | #define DMU_OT_DEFERRED DMU_OT_NONE | |
51 | #define DMU_OT_TOTAL DMU_OT_NUMTYPES | |
52 | ||
53 | typedef struct zfs_blkstat { | |
54 | uint64_t zb_count; | |
55 | uint64_t zb_asize; | |
56 | uint64_t zb_lsize; | |
57 | uint64_t zb_psize; | |
58 | uint64_t zb_gangs; | |
59 | uint64_t zb_ditto_2_of_2_samevdev; | |
60 | uint64_t zb_ditto_2_of_3_samevdev; | |
61 | uint64_t zb_ditto_3_of_3_samevdev; | |
62 | } zfs_blkstat_t; | |
63 | ||
64 | typedef struct zfs_all_blkstats { | |
65 | zfs_blkstat_t zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1]; | |
66 | } zfs_all_blkstats_t; | |
67 | ||
68 | ||
69 | typedef struct dsl_pool { | |
70 | /* Immutable */ | |
71 | spa_t *dp_spa; | |
72 | struct objset *dp_meta_objset; | |
73 | struct dsl_dir *dp_root_dir; | |
74 | struct dsl_dir *dp_mos_dir; | |
75 | struct dsl_dir *dp_free_dir; | |
76 | struct dsl_dataset *dp_origin_snap; | |
77 | uint64_t dp_root_dir_obj; | |
78 | struct taskq *dp_vnrele_taskq; | |
79 | ||
80 | /* No lock needed - sync context only */ | |
81 | blkptr_t dp_meta_rootbp; | |
82 | list_t dp_synced_datasets; | |
83 | hrtime_t dp_read_overhead; | |
84 | uint64_t dp_throughput; /* bytes per millisec */ | |
85 | uint64_t dp_write_limit; | |
86 | uint64_t dp_tmp_userrefs_obj; | |
87 | bpobj_t dp_free_bpobj; | |
88 | ||
89 | struct dsl_scan *dp_scan; | |
90 | ||
91 | /* Uses dp_lock */ | |
92 | kmutex_t dp_lock; | |
93 | uint64_t dp_space_towrite[TXG_SIZE]; | |
94 | uint64_t dp_tempreserved[TXG_SIZE]; | |
95 | ||
96 | /* Has its own locking */ | |
97 | tx_state_t dp_tx; | |
98 | txg_list_t dp_dirty_datasets; | |
99 | txg_list_t dp_dirty_dirs; | |
100 | txg_list_t dp_sync_tasks; | |
101 | ||
102 | /* | |
103 | * Protects administrative changes (properties, namespace) | |
104 | * It is only held for write in syncing context. Therefore | |
105 | * syncing context does not need to ever have it for read, since | |
106 | * nobody else could possibly have it for write. | |
107 | */ | |
108 | krwlock_t dp_config_rwlock; | |
109 | ||
110 | zfs_all_blkstats_t *dp_blkstats; | |
111 | } dsl_pool_t; | |
112 | ||
113 | int dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp); | |
114 | void dsl_pool_close(dsl_pool_t *dp); | |
115 | dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg); | |
116 | void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg); | |
117 | void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg); | |
118 | int dsl_pool_sync_context(dsl_pool_t *dp); | |
119 | uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree); | |
120 | uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree); | |
121 | int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx); | |
122 | void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); | |
123 | void dsl_pool_memory_pressure(dsl_pool_t *dp); | |
124 | void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); | |
125 | void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp); | |
126 | void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg, | |
127 | const blkptr_t *bpp); | |
128 | int dsl_read(zio_t *pio, spa_t *spa, const blkptr_t *bpp, arc_buf_t *pbuf, | |
129 | arc_done_func_t *done, void *private, int priority, int zio_flags, | |
130 | uint32_t *arc_flags, const zbookmark_t *zb); | |
131 | int dsl_read_nolock(zio_t *pio, spa_t *spa, const blkptr_t *bpp, | |
132 | arc_done_func_t *done, void *private, int priority, int zio_flags, | |
133 | uint32_t *arc_flags, const zbookmark_t *zb); | |
134 | void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx); | |
135 | void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx); | |
136 | void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx); | |
137 | ||
138 | taskq_t *dsl_pool_vnrele_taskq(dsl_pool_t *dp); | |
139 | ||
140 | extern int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj, | |
141 | const char *tag, uint64_t *now, dmu_tx_t *tx); | |
142 | extern int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj, | |
143 | const char *tag, dmu_tx_t *tx); | |
144 | extern void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp); | |
145 | int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **); | |
146 | ||
147 | #ifdef __cplusplus | |
148 | } | |
149 | #endif | |
150 | ||
151 | #endif /* _SYS_DSL_POOL_H */ |