1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ecc2d604Sbonwick * Common Development and Distribution License (the "License"). 6ecc2d604Sbonwick * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 223f9d6ad7SLin Ling * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 2302b647c5SGeorge Wilson * Copyright (c) 2011, 2014 by Delphix. All rights reserved. 24fa9e4066Sahrens */ 25fa9e4066Sahrens 26fa9e4066Sahrens #ifndef _SYS_METASLAB_H 27fa9e4066Sahrens #define _SYS_METASLAB_H 28fa9e4066Sahrens 29fa9e4066Sahrens #include <sys/spa.h> 30fa9e4066Sahrens #include <sys/space_map.h> 31fa9e4066Sahrens #include <sys/txg.h> 32fa9e4066Sahrens #include <sys/zio.h> 33fa9e4066Sahrens #include <sys/avl.h> 34fa9e4066Sahrens 35fa9e4066Sahrens #ifdef __cplusplus 36fa9e4066Sahrens extern "C" { 37fa9e4066Sahrens #endif 38fa9e4066Sahrens 390713e232SGeorge Wilson typedef struct metaslab_ops { 400713e232SGeorge Wilson uint64_t (*msop_alloc)(metaslab_t *msp, uint64_t size); 410713e232SGeorge Wilson } metaslab_ops_t; 42d6e555bdSGeorge Wilson 430713e232SGeorge Wilson extern metaslab_ops_t *zfs_metaslab_ops; 440713e232SGeorge Wilson 45*3ae46a84SPrakash Surya int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t, 46*3ae46a84SPrakash Surya metaslab_t **); 4702b647c5SGeorge Wilson void metaslab_fini(metaslab_t *); 480713e232SGeorge Wilson 4902b647c5SGeorge Wilson void metaslab_load_wait(metaslab_t *); 5002b647c5SGeorge Wilson int metaslab_load(metaslab_t *); 5102b647c5SGeorge Wilson void metaslab_unload(metaslab_t *); 520713e232SGeorge Wilson 5302b647c5SGeorge Wilson void metaslab_sync(metaslab_t *, uint64_t); 5402b647c5SGeorge Wilson void metaslab_sync_done(metaslab_t *, uint64_t); 5502b647c5SGeorge Wilson void metaslab_sync_reassess(metaslab_group_t *); 5602b647c5SGeorge Wilson uint64_t metaslab_block_maxsize(metaslab_t *); 57fa9e4066Sahrens 58e14bb325SJeff Bonwick #define METASLAB_HINTBP_FAVOR 0x0 59e14bb325SJeff Bonwick #define METASLAB_HINTBP_AVOID 0x1 60e14bb325SJeff Bonwick #define METASLAB_GANG_HEADER 0x2 6109c9d376SGeorge Wilson #define METASLAB_GANG_CHILD 0x4 6209c9d376SGeorge Wilson #define METASLAB_GANG_AVOID 0x8 63e14bb325SJeff Bonwick 6402b647c5SGeorge Wilson int metaslab_alloc(spa_t *, metaslab_class_t *, uint64_t, 6502b647c5SGeorge Wilson blkptr_t *, int, uint64_t, blkptr_t *, int); 6602b647c5SGeorge Wilson void metaslab_free(spa_t *, const blkptr_t *, uint64_t, boolean_t); 6702b647c5SGeorge Wilson int metaslab_claim(spa_t *, const blkptr_t *, uint64_t); 6802b647c5SGeorge Wilson void metaslab_check_free(spa_t *, const blkptr_t *); 69fa9e4066Sahrens 7002b647c5SGeorge Wilson metaslab_class_t *metaslab_class_create(spa_t *, metaslab_ops_t *); 7102b647c5SGeorge Wilson void metaslab_class_destroy(metaslab_class_t *); 7202b647c5SGeorge Wilson int metaslab_class_validate(metaslab_class_t *); 7302b647c5SGeorge Wilson void metaslab_class_histogram_verify(metaslab_class_t *); 7402b647c5SGeorge Wilson uint64_t metaslab_class_fragmentation(metaslab_class_t *); 7502b647c5SGeorge Wilson uint64_t metaslab_class_expandable_space(metaslab_class_t *); 76fa9e4066Sahrens 7702b647c5SGeorge Wilson void metaslab_class_space_update(metaslab_class_t *, int64_t, int64_t, 7802b647c5SGeorge Wilson int64_t, int64_t); 7902b647c5SGeorge Wilson uint64_t metaslab_class_get_alloc(metaslab_class_t *); 8002b647c5SGeorge Wilson uint64_t metaslab_class_get_space(metaslab_class_t *); 8102b647c5SGeorge Wilson uint64_t metaslab_class_get_dspace(metaslab_class_t *); 8202b647c5SGeorge Wilson uint64_t metaslab_class_get_deferred(metaslab_class_t *); 83b24ab676SJeff Bonwick 8402b647c5SGeorge Wilson metaslab_group_t *metaslab_group_create(metaslab_class_t *, vdev_t *); 8502b647c5SGeorge Wilson void metaslab_group_destroy(metaslab_group_t *); 8602b647c5SGeorge Wilson void metaslab_group_activate(metaslab_group_t *); 8702b647c5SGeorge Wilson void metaslab_group_passivate(metaslab_group_t *); 8802b647c5SGeorge Wilson uint64_t metaslab_group_get_space(metaslab_group_t *); 8902b647c5SGeorge Wilson void metaslab_group_histogram_verify(metaslab_group_t *); 9002b647c5SGeorge Wilson uint64_t metaslab_group_fragmentation(metaslab_group_t *); 9102b647c5SGeorge Wilson void metaslab_group_histogram_remove(metaslab_group_t *, metaslab_t *); 92fa9e4066Sahrens 93fa9e4066Sahrens #ifdef __cplusplus 94fa9e4066Sahrens } 95fa9e4066Sahrens #endif 96fa9e4066Sahrens 97fa9e4066Sahrens #endif /* _SYS_METASLAB_H */ 98