dsl_pool.h revision 177698 
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 2006 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	"%Z%%M%	%I%	%E% 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
37extern "C" {
38#endif
39
40struct objset;
41struct dsl_dir;
42
43typedef 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_objsets;
54
55	/* Has its own locking */
56	tx_state_t dp_tx;
57	txg_list_t dp_dirty_datasets;
58	txg_list_t dp_dirty_dirs;
59	txg_list_t dp_sync_tasks;
60
61	/*
62	 * Protects administrative changes (properties, namespace)
63	 * It is only held for write in syncing context.  Therefore
64	 * syncing context does not need to ever have it for read, since
65	 * nobody else could possibly have it for write.
66	 */
67	krwlock_t dp_config_rwlock;
68} dsl_pool_t;
69
70int dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp);
71void dsl_pool_close(dsl_pool_t *dp);
72dsl_pool_t *dsl_pool_create(spa_t *spa, uint64_t txg);
73void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
74void dsl_pool_zil_clean(dsl_pool_t *dp);
75int dsl_pool_sync_context(dsl_pool_t *dp);
76uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);
77
78#ifdef	__cplusplus
79}
80#endif
81
82#endif /* _SYS_DSL_POOL_H */
83