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/*
* 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.
*/
#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
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 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 */
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