| /* |
| * 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. |
| * Copyright (c) 2011, 2018 by Delphix. All rights reserved. |
| * Copyright (c) 2017, Intel Corporation. |
| */ |
| |
| #ifndef _SYS_METASLAB_H |
| #define _SYS_METASLAB_H |
| |
| #include <sys/spa.h> |
| #include <sys/space_map.h> |
| #include <sys/txg.h> |
| #include <sys/zio.h> |
| #include <sys/avl.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| |
| typedef struct metaslab_ops { |
| uint64_t (*msop_alloc)(metaslab_t *, uint64_t); |
| } metaslab_ops_t; |
| |
| |
| extern metaslab_ops_t *zfs_metaslab_ops; |
| |
| int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t, |
| metaslab_t **); |
| void metaslab_fini(metaslab_t *); |
| |
| int metaslab_load(metaslab_t *); |
| void metaslab_potentially_unload(metaslab_t *, uint64_t); |
| void metaslab_unload(metaslab_t *); |
| |
| uint64_t metaslab_allocated_space(metaslab_t *); |
| |
| void metaslab_sync(metaslab_t *, uint64_t); |
| void metaslab_sync_done(metaslab_t *, uint64_t); |
| void metaslab_sync_reassess(metaslab_group_t *); |
| uint64_t metaslab_block_maxsize(metaslab_t *); |
| |
| /* |
| * metaslab alloc flags |
| */ |
| #define METASLAB_HINTBP_FAVOR 0x0 |
| #define METASLAB_HINTBP_AVOID 0x1 |
| #define METASLAB_GANG_HEADER 0x2 |
| #define METASLAB_GANG_CHILD 0x4 |
| #define METASLAB_ASYNC_ALLOC 0x8 |
| #define METASLAB_DONT_THROTTLE 0x10 |
| #define METASLAB_MUST_RESERVE 0x20 |
| #define METASLAB_FASTWRITE 0x40 |
| |
| int metaslab_alloc(spa_t *, metaslab_class_t *, uint64_t, |
| blkptr_t *, int, uint64_t, blkptr_t *, int, zio_alloc_list_t *, zio_t *, |
| int); |
| int metaslab_alloc_dva(spa_t *, metaslab_class_t *, uint64_t, |
| dva_t *, int, dva_t *, uint64_t, int, zio_alloc_list_t *, int); |
| void metaslab_free(spa_t *, const blkptr_t *, uint64_t, boolean_t); |
| void metaslab_free_concrete(vdev_t *, uint64_t, uint64_t, boolean_t); |
| void metaslab_free_dva(spa_t *, const dva_t *, boolean_t); |
| void metaslab_free_impl_cb(uint64_t, vdev_t *, uint64_t, uint64_t, void *); |
| void metaslab_unalloc_dva(spa_t *, const dva_t *, uint64_t); |
| int metaslab_claim(spa_t *, const blkptr_t *, uint64_t); |
| int metaslab_claim_impl(vdev_t *, uint64_t, uint64_t, uint64_t); |
| void metaslab_check_free(spa_t *, const blkptr_t *); |
| void metaslab_fastwrite_mark(spa_t *, const blkptr_t *); |
| void metaslab_fastwrite_unmark(spa_t *, const blkptr_t *); |
| |
| void metaslab_alloc_trace_init(void); |
| void metaslab_alloc_trace_fini(void); |
| void metaslab_trace_init(zio_alloc_list_t *); |
| void metaslab_trace_fini(zio_alloc_list_t *); |
| |
| metaslab_class_t *metaslab_class_create(spa_t *, metaslab_ops_t *); |
| void metaslab_class_destroy(metaslab_class_t *); |
| int metaslab_class_validate(metaslab_class_t *); |
| void metaslab_class_histogram_verify(metaslab_class_t *); |
| uint64_t metaslab_class_fragmentation(metaslab_class_t *); |
| uint64_t metaslab_class_expandable_space(metaslab_class_t *); |
| boolean_t metaslab_class_throttle_reserve(metaslab_class_t *, int, int, |
| zio_t *, int); |
| void metaslab_class_throttle_unreserve(metaslab_class_t *, int, int, zio_t *); |
| |
| uint64_t metaslab_class_get_alloc(metaslab_class_t *); |
| uint64_t metaslab_class_get_space(metaslab_class_t *); |
| uint64_t metaslab_class_get_dspace(metaslab_class_t *); |
| uint64_t metaslab_class_get_deferred(metaslab_class_t *); |
| |
| metaslab_group_t *metaslab_group_create(metaslab_class_t *, vdev_t *, int); |
| void metaslab_group_destroy(metaslab_group_t *); |
| void metaslab_group_activate(metaslab_group_t *); |
| void metaslab_group_passivate(metaslab_group_t *); |
| boolean_t metaslab_group_initialized(metaslab_group_t *); |
| uint64_t metaslab_group_get_space(metaslab_group_t *); |
| void metaslab_group_histogram_verify(metaslab_group_t *); |
| uint64_t metaslab_group_fragmentation(metaslab_group_t *); |
| void metaslab_group_histogram_remove(metaslab_group_t *, metaslab_t *); |
| void metaslab_group_alloc_decrement(spa_t *, uint64_t, void *, int, int, |
| boolean_t); |
| void metaslab_group_alloc_verify(spa_t *, const blkptr_t *, void *, int); |
| void metaslab_recalculate_weight_and_sort(metaslab_t *); |
| void metaslab_disable(metaslab_t *); |
| void metaslab_enable(metaslab_t *, boolean_t); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _SYS_METASLAB_H */ |