b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick/*
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * CDDL HEADER START
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick *
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * The contents of this file are subject to the terms of the
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * Common Development and Distribution License (the "License").
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * You may not use this file except in compliance with the License.
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick *
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * or http://www.opensolaris.org/os/licensing.
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * See the License for the specific language governing permissions
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * and limitations under the License.
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick *
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * When distributing Covered Code, include this CDDL HEADER in each
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * If applicable, add the following below this CDDL HEADER, with the
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * fields enclosed by brackets "[]" replaced with your own identifying
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * information: Portions Copyright [yyyy] [name of copyright owner]
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick *
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * CDDL HEADER END
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick/*
3f9d6ad73e45c6823b409f93b0c8d4f62861d2d5Lin Ling * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#ifndef _SYS_DDT_H
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define _SYS_DDT_H
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#include <sys/sysmacros.h>
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#include <sys/types.h>
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#include <sys/fs/zfs.h>
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#include <sys/zio.h>
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#include <sys/dmu.h>
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#ifdef __cplusplus
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern "C" {
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#endif
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick/*
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * On-disk DDT formats, in the desired search order (newest version first).
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickenum ddt_type {
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick DDT_TYPE_ZAP = 0,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick DDT_TYPES
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick};
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick/*
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * DDT classes, in the desired search order (highest replication level first).
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickenum ddt_class {
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick DDT_CLASS_DITTO = 0,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick DDT_CLASS_DUPLICATE,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick DDT_CLASS_UNIQUE,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick DDT_CLASSES
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick};
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define DDT_TYPE_CURRENT 0
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define DDT_COMPRESS_BYTEORDER_MASK 0x80
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define DDT_COMPRESS_FUNCTION_MASK 0x7f
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick/*
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * On-disk ddt entry: key (name) and physical storage (value).
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwicktypedef struct ddt_key {
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick zio_cksum_t ddk_cksum; /* 256-bit block checksum */
f7170741490edba9d1d9c697c177c887172bc741Will Andrews /*
f7170741490edba9d1d9c697c177c887172bc741Will Andrews * Encoded with logical & physical size, and compression, as follows:
f7170741490edba9d1d9c697c177c887172bc741Will Andrews * +-------+-------+-------+-------+-------+-------+-------+-------+
f7170741490edba9d1d9c697c177c887172bc741Will Andrews * | 0 | 0 | 0 | comp | PSIZE | LSIZE |
f7170741490edba9d1d9c697c177c887172bc741Will Andrews * +-------+-------+-------+-------+-------+-------+-------+-------+
f7170741490edba9d1d9c697c177c887172bc741Will Andrews */
f7170741490edba9d1d9c697c177c887172bc741Will Andrews uint64_t ddk_prop;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick} ddt_key_t;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define DDK_GET_LSIZE(ddk) \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick BF64_GET_SB((ddk)->ddk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define DDK_SET_LSIZE(ddk, x) \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick BF64_SET_SB((ddk)->ddk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define DDK_GET_PSIZE(ddk) \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick BF64_GET_SB((ddk)->ddk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define DDK_SET_PSIZE(ddk, x) \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick BF64_SET_SB((ddk)->ddk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1, x)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define DDK_GET_COMPRESS(ddk) BF64_GET((ddk)->ddk_prop, 32, 8)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define DDK_SET_COMPRESS(ddk, x) BF64_SET((ddk)->ddk_prop, 32, 8, x)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define DDT_KEY_WORDS (sizeof (ddt_key_t) / sizeof (uint64_t))
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwicktypedef struct ddt_phys {
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick dva_t ddp_dva[SPA_DVAS_PER_BP];
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick uint64_t ddp_refcnt;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick uint64_t ddp_phys_birth;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick} ddt_phys_t;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickenum ddt_phys_type {
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick DDT_PHYS_DITTO = 0,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick DDT_PHYS_SINGLE = 1,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick DDT_PHYS_DOUBLE = 2,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick DDT_PHYS_TRIPLE = 3,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick DDT_PHYS_TYPES
30f608a433ef7b19cb4981bba0a0f7ccd7c92d03George Wilson};
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick/*
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * In-core ddt entry
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickstruct ddt_entry {
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ddt_key_t dde_key;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ddt_phys_t dde_phys[DDT_PHYS_TYPES];
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick zio_t *dde_lead_zio[DDT_PHYS_TYPES];
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick void *dde_repair_data;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick enum ddt_type dde_type;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick enum ddt_class dde_class;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick uint8_t dde_loading;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick uint8_t dde_loaded;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick kcondvar_t dde_cv;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick avl_node_t dde_node;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick};
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick/*
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * In-core ddt
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickstruct ddt {
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick kmutex_t ddt_lock;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick avl_tree_t ddt_tree;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick avl_tree_t ddt_repair_tree;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick enum zio_checksum ddt_checksum;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick spa_t *ddt_spa;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick objset_t *ddt_os;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick uint64_t ddt_stat_object;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick uint64_t ddt_object[DDT_TYPES][DDT_CLASSES];
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ddt_histogram_t ddt_histogram[DDT_TYPES][DDT_CLASSES];
30f608a433ef7b19cb4981bba0a0f7ccd7c92d03George Wilson ddt_histogram_t ddt_histogram_cache[DDT_TYPES][DDT_CLASSES];
30f608a433ef7b19cb4981bba0a0f7ccd7c92d03George Wilson ddt_object_t ddt_object_stats[DDT_TYPES][DDT_CLASSES];
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick avl_node_t ddt_node;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick};
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick/*
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick * In-core and on-disk bookmark for DDT walks
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick */
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwicktypedef struct ddt_bookmark {
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick uint64_t ddb_class;
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick uint64_t ddb_type;
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick uint64_t ddb_checksum;
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick uint64_t ddb_cursor;
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick} ddt_bookmark_t;
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick/*
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick * Ops vector to access a specific DDT object type.
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwicktypedef struct ddt_ops {
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick char ddt_op_name[32];
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick int (*ddt_op_create)(objset_t *os, uint64_t *object, dmu_tx_t *tx,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick boolean_t prehash);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick int (*ddt_op_destroy)(objset_t *os, uint64_t object, dmu_tx_t *tx);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick int (*ddt_op_lookup)(objset_t *os, uint64_t object, ddt_entry_t *dde);
c7cd242109c82107ec2e50013369e92be9d77702George Wilson void (*ddt_op_prefetch)(objset_t *os, uint64_t object,
c7cd242109c82107ec2e50013369e92be9d77702George Wilson ddt_entry_t *dde);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick int (*ddt_op_update)(objset_t *os, uint64_t object, ddt_entry_t *dde,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick dmu_tx_t *tx);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick int (*ddt_op_remove)(objset_t *os, uint64_t object, ddt_entry_t *dde,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick dmu_tx_t *tx);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick int (*ddt_op_walk)(objset_t *os, uint64_t object, ddt_entry_t *dde,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick uint64_t *walk);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick uint64_t (*ddt_op_count)(objset_t *os, uint64_t object);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick} ddt_ops_t;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define DDT_NAMELEN 80
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_object_name(ddt_t *ddt, enum ddt_type type,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick enum ddt_class class, char *name);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern int ddt_object_walk(ddt_t *ddt, enum ddt_type type,
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick enum ddt_class class, uint64_t *walk, ddt_entry_t *dde);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern uint64_t ddt_object_count(ddt_t *ddt, enum ddt_type type,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick enum ddt_class class);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern int ddt_object_info(ddt_t *ddt, enum ddt_type type,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick enum ddt_class class, dmu_object_info_t *);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern boolean_t ddt_object_exists(ddt_t *ddt, enum ddt_type type,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick enum ddt_class class);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_bp_fill(const ddt_phys_t *ddp, blkptr_t *bp,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick uint64_t txg);
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwickextern void ddt_bp_create(enum zio_checksum checksum, const ddt_key_t *ddk,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick const ddt_phys_t *ddp, blkptr_t *bp);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_key_fill(ddt_key_t *ddk, const blkptr_t *bp);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_phys_fill(ddt_phys_t *ddp, const blkptr_t *bp);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_phys_clear(ddt_phys_t *ddp);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_phys_addref(ddt_phys_t *ddp);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_phys_decref(ddt_phys_t *ddp);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_phys_free(ddt_t *ddt, ddt_key_t *ddk, ddt_phys_t *ddp,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick uint64_t txg);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern ddt_phys_t *ddt_phys_select(const ddt_entry_t *dde, const blkptr_t *bp);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern uint64_t ddt_phys_total_refcnt(const ddt_entry_t *dde);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_stat_add(ddt_stat_t *dst, const ddt_stat_t *src, uint64_t neg);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_histogram_add(ddt_histogram_t *dst, const ddt_histogram_t *src);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_histogram_stat(ddt_stat_t *dds, const ddt_histogram_t *ddh);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern boolean_t ddt_histogram_empty(const ddt_histogram_t *ddh);
9eb19f4d61679ca0382def038665019234458eddGeorge Wilsonextern void ddt_get_dedup_object_stats(spa_t *spa, ddt_object_t *ddo);
9eb19f4d61679ca0382def038665019234458eddGeorge Wilsonextern void ddt_get_dedup_histogram(spa_t *spa, ddt_histogram_t *ddh);
9eb19f4d61679ca0382def038665019234458eddGeorge Wilsonextern void ddt_get_dedup_stats(spa_t *spa, ddt_stat_t *dds_total);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
485bbbf5450c6645352388d798251c1a89ef4c9cGeorge Wilsonextern uint64_t ddt_get_dedup_dspace(spa_t *spa);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern uint64_t ddt_get_pool_dedup_ratio(spa_t *spa);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern int ddt_ditto_copies_needed(ddt_t *ddt, ddt_entry_t *dde,
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ddt_phys_t *ddp_willref);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern int ddt_ditto_copies_present(ddt_entry_t *dde);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern size_t ddt_compress(void *src, uchar_t *dst, size_t s_len, size_t d_len);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_decompress(uchar_t *src, void *dst, size_t s_len, size_t d_len);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern ddt_t *ddt_select(spa_t *spa, const blkptr_t *bp);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_enter(ddt_t *ddt);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_exit(ddt_t *ddt);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern ddt_entry_t *ddt_lookup(ddt_t *ddt, const blkptr_t *bp, boolean_t add);
c7cd242109c82107ec2e50013369e92be9d77702George Wilsonextern void ddt_prefetch(spa_t *spa, const blkptr_t *bp);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_remove(ddt_t *ddt, ddt_entry_t *dde);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwickextern boolean_t ddt_class_contains(spa_t *spa, enum ddt_class max_class,
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick const blkptr_t *bp);
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern ddt_entry_t *ddt_repair_start(ddt_t *ddt, const blkptr_t *bp);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_repair_done(ddt_t *ddt, ddt_entry_t *dde);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern int ddt_entry_compare(const void *x1, const void *x2);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_create(spa_t *spa);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern int ddt_load(spa_t *spa);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_unload(spa_t *spa);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern void ddt_sync(spa_t *spa, uint64_t txg);
bbfd46c40e81c7d954cec28db66453ec5ab44613Jeff Bonwickextern int ddt_walk(spa_t *spa, ddt_bookmark_t *ddb, ddt_entry_t *dde);
3f9d6ad73e45c6823b409f93b0c8d4f62861d2d5Lin Lingextern int ddt_object_update(ddt_t *ddt, enum ddt_type type,
3f9d6ad73e45c6823b409f93b0c8d4f62861d2d5Lin Ling enum ddt_class class, ddt_entry_t *dde, dmu_tx_t *tx);
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickextern const ddt_ops_t ddt_zap_ops;
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#ifdef __cplusplus
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick}
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#endif
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#endif /* _SYS_DDT_H */