/* * 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) 2012 by Delphix. All rights reserved. */ #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 extern space_map_ops_t *zfs_metaslab_ops; extern metaslab_t *metaslab_init(metaslab_group_t *mg, space_map_obj_t *smo, uint64_t start, uint64_t size, uint64_t txg); extern void metaslab_fini(metaslab_t *msp); extern void metaslab_sync(metaslab_t *msp, uint64_t txg); extern void metaslab_sync_done(metaslab_t *msp, uint64_t txg); extern void metaslab_sync_reassess(metaslab_group_t *mg); #define METASLAB_HINTBP_FAVOR 0x0 #define METASLAB_HINTBP_AVOID 0x1 #define METASLAB_GANG_HEADER 0x2 #define METASLAB_GANG_CHILD 0x4 #define METASLAB_GANG_AVOID 0x8 #define METASLAB_FASTWRITE 0x10 extern int metaslab_alloc(spa_t *spa, metaslab_class_t *mc, uint64_t psize, blkptr_t *bp, int ncopies, uint64_t txg, blkptr_t *hintbp, int flags); extern void metaslab_free(spa_t *spa, const blkptr_t *bp, uint64_t txg, boolean_t now); extern int metaslab_claim(spa_t *spa, const blkptr_t *bp, uint64_t txg); extern void metaslab_check_free(spa_t *spa, const blkptr_t *bp); extern void metaslab_fastwrite_mark(spa_t *spa, const blkptr_t *bp); extern void metaslab_fastwrite_unmark(spa_t *spa, const blkptr_t *bp); extern metaslab_class_t *metaslab_class_create(spa_t *spa, space_map_ops_t *ops); extern void metaslab_class_destroy(metaslab_class_t *mc); extern int metaslab_class_validate(metaslab_class_t *mc); extern void metaslab_class_space_update(metaslab_class_t *mc, int64_t alloc_delta, int64_t defer_delta, int64_t space_delta, int64_t dspace_delta); extern uint64_t metaslab_class_get_alloc(metaslab_class_t *mc); extern uint64_t metaslab_class_get_space(metaslab_class_t *mc); extern uint64_t metaslab_class_get_dspace(metaslab_class_t *mc); extern uint64_t metaslab_class_get_deferred(metaslab_class_t *mc); extern metaslab_group_t *metaslab_group_create(metaslab_class_t *mc, vdev_t *vd); extern void metaslab_group_destroy(metaslab_group_t *mg); extern void metaslab_group_activate(metaslab_group_t *mg); extern void metaslab_group_passivate(metaslab_group_t *mg); #ifdef __cplusplus } #endif #endif /* _SYS_METASLAB_H */