projects / mirror_zfs.git / blame
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|---|---|---|
| 34dc7c2f BB |
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 2008 Sun Microsystems, Inc. All rights reserved. | |
| 23 | * Use is subject to license terms. | |
| 24 | */ | |
| 25 | ||
| 26 | #ifndef _SYS_DSL_POOL_H | |
| 27 | #define _SYS_DSL_POOL_H | |
| 28 | ||
| 29 | #pragma ident "@(#)dsl_pool.h 1.5 08/03/20 SMI" | |
| 30 | ||
| 31 | #include <sys/spa.h> | |
| 32 | #include <sys/txg.h> | |
| 33 | #include <sys/txg_impl.h> | |
| 34 | #include <sys/zfs_context.h> | |
| 35 | ||
| 36 | #ifdef __cplusplus | |
| 37 | extern "C" { | |
| 38 | #endif | |
| 39 | ||
| 40 | struct objset; | |
| 41 | struct dsl_dir; | |
| 42 | ||
| 43 | typedef struct dsl_pool { | |
| 44 | /* Immutable */ | |
| 45 | spa_t *dp_spa; | |
| 46 | struct objset *dp_meta_objset; | |
| 47 | struct dsl_dir *dp_root_dir; | |
| 48 | struct dsl_dir *dp_mos_dir; | |
| 49 | uint64_t dp_root_dir_obj; | |
| 50 | ||
| 51 | /* No lock needed - sync context only */ | |
| 52 | blkptr_t dp_meta_rootbp; | |
| 53 | list_t dp_synced_datasets; | |
| 54 | uint64_t dp_write_limit; | |
| 55 | ||
| 56 | /* Uses dp_lock */ | |
| 57 | kmutex_t dp_lock; | |
| 58 | uint64_t dp_space_towrite[TXG_SIZE]; | |
| 59 | uint64_t dp_tempreserved[TXG_SIZE]; | |
| 60 | ||
| 61 | /* Has its own locking */ | |
| 62 | tx_state_t dp_tx; | |
| 63 | txg_list_t dp_dirty_datasets; | |
| 64 | txg_list_t dp_dirty_dirs; | |
| 65 | txg_list_t dp_sync_tasks; | |
| 66 | ||
| 67 | /* | |
| 68 | * Protects administrative changes (properties, namespace) | |
| 69 | * It is only held for write in syncing context. Therefore | |
| 70 | * syncing context does not need to ever have it for read, since | |
| 71 | * nobody else could possibly have it for write. | |
| 72 | */ | |
| 73 | krwlock_t dp_config_rwlock; | |
| 74 | } dsl_pool_t; | |
| 75 | ||
| 76 | int dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp); | |
| 77 | void dsl_pool_close(dsl_pool_t *dp); | |
| 78 | dsl_pool_t *dsl_pool_create(spa_t *spa, uint64_t txg); | |
| 79 | void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg); | |
| 80 | void dsl_pool_zil_clean(dsl_pool_t *dp); | |
| 81 | int dsl_pool_sync_context(dsl_pool_t *dp); | |
| 82 | uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree); | |
| 83 | int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx); | |
| 84 | void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); | |
| 85 | void dsl_pool_memory_pressure(dsl_pool_t *dp); | |
| 86 | void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); | |
| 87 | ||
| 88 | #ifdef __cplusplus | |
| 89 | } | |
| 90 | #endif | |
| 91 | ||
| 92 | #endif /* _SYS_DSL_POOL_H */ |