81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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*/
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#ifndef _SYS_METASLAB_H
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#define _SYS_METASLAB_H
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#include <sys/spa.h>
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#include <sys/space_map.h>
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#include <sys/txg.h>
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#include <sys/zio.h>
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#include <sys/avl.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern space_map_ops_t *zfs_metaslab_ops;
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extern metaslab_t *metaslab_init(metaslab_group_t *mg, space_map_obj_t *smo,
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uint64_t start, uint64_t size, uint64_t txg);
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extern void metaslab_fini(metaslab_t *msp);
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extern void metaslab_sync(metaslab_t *msp, uint64_t txg);
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extern void metaslab_sync_done(metaslab_t *msp, uint64_t txg);
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extern void metaslab_sync_reassess(metaslab_group_t *mg);
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#define METASLAB_HINTBP_FAVOR 0x0
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#define METASLAB_HINTBP_AVOID 0x1
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#define METASLAB_GANG_HEADER 0x2
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extern int metaslab_alloc(spa_t *spa, metaslab_class_t *mc, uint64_t psize,
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blkptr_t *bp, int ncopies, uint64_t txg, blkptr_t *hintbp, int flags);
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extern void metaslab_free(spa_t *spa, const blkptr_t *bp, uint64_t txg,
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boolean_t now);
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extern int metaslab_claim(spa_t *spa, const blkptr_t *bp, uint64_t txg);
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extern metaslab_class_t *metaslab_class_create(spa_t *spa,
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space_map_ops_t *ops);
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extern void metaslab_class_destroy(metaslab_class_t *mc);
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extern int metaslab_class_validate(metaslab_class_t *mc);
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extern void metaslab_class_space_update(metaslab_class_t *mc,
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int64_t alloc_delta, int64_t defer_delta,
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int64_t space_delta, int64_t dspace_delta);
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extern uint64_t metaslab_class_get_alloc(metaslab_class_t *mc);
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extern uint64_t metaslab_class_get_space(metaslab_class_t *mc);
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extern uint64_t metaslab_class_get_dspace(metaslab_class_t *mc);
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extern uint64_t metaslab_class_get_deferred(metaslab_class_t *mc);
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extern metaslab_group_t *metaslab_group_create(metaslab_class_t *mc,
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vdev_t *vd);
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extern void metaslab_group_destroy(metaslab_group_t *mg);
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extern void metaslab_group_activate(metaslab_group_t *mg);
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extern void metaslab_group_passivate(metaslab_group_t *mg);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_METASLAB_H */
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