sys/metaslab_impl.h

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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 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 * Copyright (c) 2011 by Delphix. All rights reserved.
 */

#ifndef _SYS_METASLAB_IMPL_H
#define _SYS_METASLAB_IMPL_H

#include <sys/metaslab.h>
#include <sys/space_map.h>
#include <sys/vdev.h>
#include <sys/txg.h>
#include <sys/avl.h>

#ifdef  __cplusplus
extern "C" {
#endif

struct metaslab_class {
        spa_t                   *mc_spa;
        metaslab_group_t        *mc_rotor;
        space_map_ops_t         *mc_ops;
        uint64_t                mc_aliquot;
        uint64_t                mc_alloc;       
        uint64_t                mc_deferred;    
        uint64_t                mc_space;       
        uint64_t                mc_dspace;      
};

struct metaslab_group {
        kmutex_t                mg_lock;
        avl_tree_t              mg_metaslab_tree;
        uint64_t                mg_aliquot;
        uint64_t                mg_bonus_area;
        uint64_t                mg_alloc_failures;
        int64_t                 mg_bias;
        int64_t                 mg_activation_count;
        metaslab_class_t        *mg_class;
        vdev_t                  *mg_vd;
        metaslab_group_t        *mg_prev;
        metaslab_group_t        *mg_next;
};

struct metaslab {
        kmutex_t        ms_lock;        
        space_map_obj_t ms_smo;         
        space_map_obj_t ms_smo_syncing; 
        space_map_t     ms_allocmap[TXG_SIZE];  
        space_map_t     ms_freemap[TXG_SIZE];   
        space_map_t     ms_defermap[TXG_DEFER_SIZE]; 
        space_map_t     ms_map;         
        int64_t         ms_deferspace;  
        uint64_t        ms_weight;      
        metaslab_group_t *ms_group;     
        avl_node_t      ms_group_node;  
        txg_node_t      ms_txg_node;    
};

#ifdef  __cplusplus
}
#endif

#endif  /* _SYS_METASLAB_IMPL_H */