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 37 extern "C" { 38 #endif 39 40 41 typedef struct metaslab_ops { 42 const char *msop_name; 43 uint64_t (*msop_alloc)(metaslab_t *, uint64_t); 44 } metaslab_ops_t; 45 46 47 extern const metaslab_ops_t zfs_metaslab_ops; 48 49 int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t, 50 metaslab_t **); 51 void metaslab_fini(metaslab_t *); 52 53 void metaslab_set_unflushed_dirty(metaslab_t *, boolean_t); 54 void metaslab_set_unflushed_txg(metaslab_t *, uint64_t, dmu_tx_t *); 55 void metaslab_set_estimated_condensed_size(metaslab_t *, uint64_t, dmu_tx_t *); 56 boolean_t metaslab_unflushed_dirty(metaslab_t *); 57 uint64_t metaslab_unflushed_txg(metaslab_t *); 58 uint64_t metaslab_estimated_condensed_size(metaslab_t *); 59 int metaslab_sort_by_flushed(const void *, const void *); 60 void metaslab_unflushed_bump(metaslab_t *, dmu_tx_t *, boolean_t); 61 uint64_t metaslab_unflushed_changes_memused(metaslab_t *); 62 63 int metaslab_load(metaslab_t *); 64 void metaslab_unload(metaslab_t *); 65 boolean_t metaslab_flush(metaslab_t *, dmu_tx_t *); 66 67 uint64_t metaslab_allocated_space(metaslab_t *); 68 69 void metaslab_sync(metaslab_t *, uint64_t); 70 void metaslab_sync_done(metaslab_t *, uint64_t); 71 void metaslab_sync_reassess(metaslab_group_t *); 72 uint64_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 86 int 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); 89 int metaslab_alloc_dva(spa_t *, metaslab_class_t *, uint64_t, 90 dva_t *, int, dva_t *, uint64_t, int, zio_alloc_list_t *, int); 91 void metaslab_free(spa_t *, const blkptr_t *, uint64_t, boolean_t); 92 void metaslab_free_concrete(vdev_t *, uint64_t, uint64_t, boolean_t); 93 void metaslab_free_dva(spa_t *, const dva_t *, boolean_t); 94 void metaslab_free_impl_cb(uint64_t, vdev_t *, uint64_t, uint64_t, void *); 95 void metaslab_unalloc_dva(spa_t *, const dva_t *, uint64_t); 96 int metaslab_claim(spa_t *, const blkptr_t *, uint64_t); 97 int metaslab_claim_impl(vdev_t *, uint64_t, uint64_t, uint64_t); 98 void metaslab_check_free(spa_t *, const blkptr_t *); 99 100 void metaslab_stat_init(void); 101 void metaslab_stat_fini(void); 102 void metaslab_trace_init(zio_alloc_list_t *); 103 void metaslab_trace_fini(zio_alloc_list_t *); 104 105 metaslab_class_t *metaslab_class_create(spa_t *, const metaslab_ops_t *); 106 void metaslab_class_destroy(metaslab_class_t *); 107 int metaslab_class_validate(metaslab_class_t *); 108 void metaslab_class_histogram_verify(metaslab_class_t *); 109 uint64_t metaslab_class_fragmentation(metaslab_class_t *); 110 uint64_t metaslab_class_expandable_space(metaslab_class_t *); 111 boolean_t metaslab_class_throttle_reserve(metaslab_class_t *, int, int, 112 zio_t *, int); 113 void metaslab_class_throttle_unreserve(metaslab_class_t *, int, int, zio_t *); 114 void metaslab_class_evict_old(metaslab_class_t *, uint64_t); 115 uint64_t metaslab_class_get_alloc(metaslab_class_t *); 116 uint64_t metaslab_class_get_space(metaslab_class_t *); 117 uint64_t metaslab_class_get_dspace(metaslab_class_t *); 118 uint64_t metaslab_class_get_deferred(metaslab_class_t *); 119 120 void metaslab_space_update(vdev_t *, metaslab_class_t *, 121 int64_t, int64_t, int64_t); 122 123 metaslab_group_t *metaslab_group_create(metaslab_class_t *, vdev_t *, int); 124 void metaslab_group_destroy(metaslab_group_t *); 125 void metaslab_group_activate(metaslab_group_t *); 126 void metaslab_group_passivate(metaslab_group_t *); 127 boolean_t metaslab_group_initialized(metaslab_group_t *); 128 uint64_t metaslab_group_get_space(metaslab_group_t *); 129 void metaslab_group_histogram_verify(metaslab_group_t *); 130 uint64_t metaslab_group_fragmentation(metaslab_group_t *); 131 void metaslab_group_histogram_remove(metaslab_group_t *, metaslab_t *); 132 void metaslab_group_alloc_decrement(spa_t *, uint64_t, const void *, int, int, 133 boolean_t); 134 void metaslab_group_alloc_verify(spa_t *, const blkptr_t *, const void *, int); 135 void metaslab_recalculate_weight_and_sort(metaslab_t *); 136 void metaslab_disable(metaslab_t *); 137 void metaslab_enable(metaslab_t *, boolean_t, boolean_t); 138 void metaslab_set_selected_txg(metaslab_t *, uint64_t); 139 140 extern int metaslab_debug_load; 141 142 range_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