/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 * Common Development and Distribution License (the "License").

 * You may not use this file except in compliance with the License.

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*

 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.

 */

#ifndef	_SYS_DSL_POOL_H

#define	_SYS_DSL_POOL_H

#include <sys/spa.h>

#include <sys/txg.h>

#include <sys/txg_impl.h>

#include <sys/zfs_context.h>

#include <sys/zio.h>

#include <sys/dnode.h>

#include <sys/ddt.h>

#include <sys/arc.h>

#include <sys/bpobj.h>

#ifdef	__cplusplus

extern "C" {

#endif

struct objset;

struct dsl_dir;

struct dsl_dataset;

struct dsl_pool;

struct dmu_tx;

struct dsl_scan;

/* These macros are for indexing into the zfs_all_blkstats_t. */

#define	DMU_OT_DEFERRED	DMU_OT_NONE

typedef struct zfs_blkstat {

	uint64_t	zb_count;

	uint64_t	zb_asize;

	uint64_t	zb_lsize;

	uint64_t	zb_psize;

	uint64_t	zb_gangs;

	uint64_t	zb_ditto_2_of_2_samevdev;

	uint64_t	zb_ditto_2_of_3_samevdev;

	uint64_t	zb_ditto_3_of_3_samevdev;

} zfs_blkstat_t;

typedef struct zfs_all_blkstats {

	zfs_blkstat_t	zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1];

} zfs_all_blkstats_t;

typedef struct dsl_pool {

	/* Immutable */

	spa_t *dp_spa;

	struct objset *dp_meta_objset;

	struct dsl_dir *dp_root_dir;

	struct dsl_dir *dp_mos_dir;

	struct dsl_dir *dp_free_dir;

	struct dsl_dataset *dp_origin_snap;

	uint64_t dp_root_dir_obj;

	struct taskq *dp_vnrele_taskq;

	/* No lock needed - sync context only */

	blkptr_t dp_meta_rootbp;

	list_t dp_synced_datasets;

	hrtime_t dp_read_overhead;

	uint64_t dp_throughput; /* bytes per millisec */

	uint64_t dp_write_limit;

	uint64_t dp_tmp_userrefs_obj;

	bpobj_t dp_free_bpobj;

	struct dsl_scan *dp_scan;

	/* Uses dp_lock */

	kmutex_t dp_lock;

	uint64_t dp_space_towrite[TXG_SIZE];

	uint64_t dp_tempreserved[TXG_SIZE];

	/* Has its own locking */

	tx_state_t dp_tx;

	txg_list_t dp_dirty_datasets;

	txg_list_t dp_dirty_dirs;

	txg_list_t dp_sync_tasks;

	/*

	 * Protects administrative changes (properties, namespace)

	 * It is only held for write in syncing context.  Therefore

	 * syncing context does not need to ever have it for read, since

	 * nobody else could possibly have it for write.

	 */

	krwlock_t dp_config_rwlock;

	zfs_all_blkstats_t *dp_blkstats;

} dsl_pool_t;

void dsl_pool_close(dsl_pool_t *dp);

dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg);

void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);

void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg);

int dsl_pool_sync_context(dsl_pool_t *dp);

uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);

uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree);

int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx);

void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);

void dsl_pool_memory_pressure(dsl_pool_t *dp);

void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);

void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp);

void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg,

    const blkptr_t *bpp);

int dsl_read(zio_t *pio, spa_t *spa, const blkptr_t *bpp, arc_buf_t *pbuf,

    arc_done_func_t *done, void *private, int priority, int zio_flags,

    uint32_t *arc_flags, const zbookmark_t *zb);

int dsl_read_nolock(zio_t *pio, spa_t *spa, const blkptr_t *bpp,

    arc_done_func_t *done, void *private, int priority, int zio_flags,

    uint32_t *arc_flags, const zbookmark_t *zb);

void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx);

void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx);

void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx);

taskq_t *dsl_pool_vnrele_taskq(dsl_pool_t *dp);

extern int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj,

    const char *tag, uint64_t *now, dmu_tx_t *tx);

extern int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj,

    const char *tag, dmu_tx_t *tx);

extern void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp);

int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **);

#ifdef	__cplusplus

}

#endif

#endif /* _SYS_DSL_POOL_H */