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 https://opensource.org/licenses/CDDL-1.0. 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 * Copyright (c) 2011, 2018 by Delphix. All rights reserved. 24 * Copyright (c) 2017, Intel Corporation. 25 */ 26 27#ifndef _SYS_METASLAB_H 28#define _SYS_METASLAB_H 29 30#include <sys/spa.h> 31#include <sys/space_map.h> 32#include <sys/txg.h> 33#include <sys/zio.h> 34#include <sys/avl.h> 35 36#ifdef __cplusplus 37extern "C" { 38#endif 39 40 41typedef struct metaslab_ops { 42 const char *msop_name; 43 uint64_t (*msop_alloc)(metaslab_t *, uint64_t); 44} metaslab_ops_t; 45 46 47extern const metaslab_ops_t zfs_metaslab_ops; 48 49int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t, 50 metaslab_t **); 51void metaslab_fini(metaslab_t *); 52 53void metaslab_set_unflushed_dirty(metaslab_t *, boolean_t); 54void metaslab_set_unflushed_txg(metaslab_t *, uint64_t, dmu_tx_t *); 55void metaslab_set_estimated_condensed_size(metaslab_t *, uint64_t, dmu_tx_t *); 56boolean_t metaslab_unflushed_dirty(metaslab_t *); 57uint64_t metaslab_unflushed_txg(metaslab_t *); 58uint64_t metaslab_estimated_condensed_size(metaslab_t *); 59int metaslab_sort_by_flushed(const void *, const void *); 60void metaslab_unflushed_bump(metaslab_t *, dmu_tx_t *, boolean_t); 61uint64_t metaslab_unflushed_changes_memused(metaslab_t *); 62 63int metaslab_load(metaslab_t *); 64void metaslab_unload(metaslab_t *); 65boolean_t metaslab_flush(metaslab_t *, dmu_tx_t *); 66 67uint64_t metaslab_allocated_space(metaslab_t *); 68 69void metaslab_sync(metaslab_t *, uint64_t); 70void metaslab_sync_done(metaslab_t *, uint64_t); 71void metaslab_sync_reassess(metaslab_group_t *); 72uint64_t metaslab_largest_allocatable(metaslab_t *); 73 74/* 75 * metaslab alloc flags 76 */ 77#define METASLAB_HINTBP_FAVOR 0x0 78#define METASLAB_HINTBP_AVOID 0x1 79#define METASLAB_GANG_HEADER 0x2 80#define METASLAB_GANG_CHILD 0x4 81#define METASLAB_ASYNC_ALLOC 0x8 82#define METASLAB_DONT_THROTTLE 0x10 83#define METASLAB_MUST_RESERVE 0x20 84#define METASLAB_ZIL 0x80 85 86int metaslab_alloc(spa_t *, metaslab_class_t *, uint64_t, 87 blkptr_t *, int, uint64_t, blkptr_t *, int, zio_alloc_list_t *, zio_t *, 88 int); 89int metaslab_alloc_dva(spa_t *, metaslab_class_t *, uint64_t, 90 dva_t *, int, dva_t *, uint64_t, int, zio_alloc_list_t *, int); 91void metaslab_free(spa_t *, const blkptr_t *, uint64_t, boolean_t); 92void metaslab_free_concrete(vdev_t *, uint64_t, uint64_t, boolean_t); 93void metaslab_free_dva(spa_t *, const dva_t *, boolean_t); 94void metaslab_free_impl_cb(uint64_t, vdev_t *, uint64_t, uint64_t, void *); 95void metaslab_unalloc_dva(spa_t *, const dva_t *, uint64_t); 96int metaslab_claim(spa_t *, const blkptr_t *, uint64_t); 97int metaslab_claim_impl(vdev_t *, uint64_t, uint64_t, uint64_t); 98void metaslab_check_free(spa_t *, const blkptr_t *); 99 100void metaslab_stat_init(void); 101void metaslab_stat_fini(void); 102void metaslab_trace_init(zio_alloc_list_t *); 103void metaslab_trace_fini(zio_alloc_list_t *); 104 105metaslab_class_t *metaslab_class_create(spa_t *, const metaslab_ops_t *); 106void metaslab_class_destroy(metaslab_class_t *); 107int metaslab_class_validate(metaslab_class_t *); 108void metaslab_class_histogram_verify(metaslab_class_t *); 109uint64_t metaslab_class_fragmentation(metaslab_class_t *); 110uint64_t metaslab_class_expandable_space(metaslab_class_t *); 111boolean_t metaslab_class_throttle_reserve(metaslab_class_t *, int, int, 112 zio_t *, int); 113void metaslab_class_throttle_unreserve(metaslab_class_t *, int, int, zio_t *); 114void metaslab_class_evict_old(metaslab_class_t *, uint64_t); 115uint64_t metaslab_class_get_alloc(metaslab_class_t *); 116uint64_t metaslab_class_get_space(metaslab_class_t *); 117uint64_t metaslab_class_get_dspace(metaslab_class_t *); 118uint64_t metaslab_class_get_deferred(metaslab_class_t *); 119 120void metaslab_space_update(vdev_t *, metaslab_class_t *, 121 int64_t, int64_t, int64_t); 122 123metaslab_group_t *metaslab_group_create(metaslab_class_t *, vdev_t *, int); 124void metaslab_group_destroy(metaslab_group_t *); 125void metaslab_group_activate(metaslab_group_t *); 126void metaslab_group_passivate(metaslab_group_t *); 127boolean_t metaslab_group_initialized(metaslab_group_t *); 128uint64_t metaslab_group_get_space(metaslab_group_t *); 129void metaslab_group_histogram_verify(metaslab_group_t *); 130uint64_t metaslab_group_fragmentation(metaslab_group_t *); 131void metaslab_group_histogram_remove(metaslab_group_t *, metaslab_t *); 132void metaslab_group_alloc_decrement(spa_t *, uint64_t, const void *, int, int, 133 boolean_t); 134void metaslab_group_alloc_verify(spa_t *, const blkptr_t *, const void *, int); 135void metaslab_recalculate_weight_and_sort(metaslab_t *); 136void metaslab_disable(metaslab_t *); 137void metaslab_enable(metaslab_t *, boolean_t, boolean_t); 138void metaslab_set_selected_txg(metaslab_t *, uint64_t); 139 140extern int metaslab_debug_load; 141 142range_seg_type_t metaslab_calculate_range_tree_type(vdev_t *vdev, 143 metaslab_t *msp, uint64_t *start, uint64_t *shift); 144 145#ifdef __cplusplus 146} 147#endif 148 149#endif /* _SYS_METASLAB_H */ 150