Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/sys/metaslab.h
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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 uint64_t (*msop_alloc)(metaslab_t *, uint64_t); 43 } metaslab_ops_t; 44 45 46 extern const metaslab_ops_t zfs_metaslab_ops; 47 48 int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t, 49 metaslab_t **); 50 void metaslab_fini(metaslab_t *); 51 52 void metaslab_set_unflushed_dirty(metaslab_t *, boolean_t); 53 void metaslab_set_unflushed_txg(metaslab_t *, uint64_t, dmu_tx_t *); 54 void metaslab_set_estimated_condensed_size(metaslab_t *, uint64_t, dmu_tx_t *); 55 boolean_t metaslab_unflushed_dirty(metaslab_t *); 56 uint64_t metaslab_unflushed_txg(metaslab_t *); 57 uint64_t metaslab_estimated_condensed_size(metaslab_t *); 58 int metaslab_sort_by_flushed(const void *, const void *); 59 void metaslab_unflushed_bump(metaslab_t *, dmu_tx_t *, boolean_t); 60 uint64_t metaslab_unflushed_changes_memused(metaslab_t *); 61 62 int metaslab_load(metaslab_t *); 63 void metaslab_unload(metaslab_t *); 64 boolean_t metaslab_flush(metaslab_t *, dmu_tx_t *); 65 66 uint64_t metaslab_allocated_space(metaslab_t *); 67 68 void metaslab_sync(metaslab_t *, uint64_t); 69 void metaslab_sync_done(metaslab_t *, uint64_t); 70 void metaslab_sync_reassess(metaslab_group_t *); 71 uint64_t metaslab_largest_allocatable(metaslab_t *); 72 73 /* 74 * metaslab alloc flags 75 */ 76 #define METASLAB_HINTBP_FAVOR 0x0 77 #define METASLAB_HINTBP_AVOID 0x1 78 #define METASLAB_GANG_HEADER 0x2 79 #define METASLAB_GANG_CHILD 0x4 80 #define METASLAB_ASYNC_ALLOC 0x8 81 #define METASLAB_DONT_THROTTLE 0x10 82 #define METASLAB_MUST_RESERVE 0x20 83 #define METASLAB_FASTWRITE 0x40 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 void metaslab_fastwrite_mark(spa_t *, const blkptr_t *); 100 void metaslab_fastwrite_unmark(spa_t *, const blkptr_t *); 101 102 void metaslab_stat_init(void); 103 void metaslab_stat_fini(void); 104 void metaslab_trace_init(zio_alloc_list_t *); 105 void metaslab_trace_fini(zio_alloc_list_t *); 106 107 metaslab_class_t *metaslab_class_create(spa_t *, const metaslab_ops_t *); 108 void metaslab_class_destroy(metaslab_class_t *); 109 int metaslab_class_validate(metaslab_class_t *); 110 void metaslab_class_histogram_verify(metaslab_class_t *); 111 uint64_t metaslab_class_fragmentation(metaslab_class_t *); 112 uint64_t metaslab_class_expandable_space(metaslab_class_t *); 113 boolean_t metaslab_class_throttle_reserve(metaslab_class_t *, int, int, 114 zio_t *, int); 115 void metaslab_class_throttle_unreserve(metaslab_class_t *, int, int, zio_t *); 116 void metaslab_class_evict_old(metaslab_class_t *, uint64_t); 117 uint64_t metaslab_class_get_alloc(metaslab_class_t *); 118 uint64_t metaslab_class_get_space(metaslab_class_t *); 119 uint64_t metaslab_class_get_dspace(metaslab_class_t *); 120 uint64_t metaslab_class_get_deferred(metaslab_class_t *); 121 122 void metaslab_space_update(vdev_t *, metaslab_class_t *, 123 int64_t, int64_t, int64_t); 124 125 metaslab_group_t *metaslab_group_create(metaslab_class_t *, vdev_t *, int); 126 void metaslab_group_destroy(metaslab_group_t *); 127 void metaslab_group_activate(metaslab_group_t *); 128 void metaslab_group_passivate(metaslab_group_t *); 129 boolean_t metaslab_group_initialized(metaslab_group_t *); 130 uint64_t metaslab_group_get_space(metaslab_group_t *); 131 void metaslab_group_histogram_verify(metaslab_group_t *); 132 uint64_t metaslab_group_fragmentation(metaslab_group_t *); 133 void metaslab_group_histogram_remove(metaslab_group_t *, metaslab_t *); 134 void metaslab_group_alloc_decrement(spa_t *, uint64_t, const void *, int, int, 135 boolean_t); 136 void metaslab_group_alloc_verify(spa_t *, const blkptr_t *, const void *, int); 137 void metaslab_recalculate_weight_and_sort(metaslab_t *); 138 void metaslab_disable(metaslab_t *); 139 void metaslab_enable(metaslab_t *, boolean_t, boolean_t); 140 void metaslab_set_selected_txg(metaslab_t *, uint64_t); 141 142 extern int metaslab_debug_load; 143 144 range_seg_type_t metaslab_calculate_range_tree_type(vdev_t *vdev, 145 metaslab_t *msp, uint64_t *start, uint64_t *shift); 146 147 #ifdef __cplusplus 148 } 149 #endif 150 151 #endif /* _SYS_METASLAB_H */
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