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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) 2018, 2019 by Delphix. All rights reserved.
*/
#ifndef _SYS_SPA_LOG_SPACEMAP_H
#define _SYS_SPA_LOG_SPACEMAP_H
#include <sys/avl.h>
typedef struct log_summary_entry {
uint64_t lse_start; /* start TXG */
uint64_t lse_mscount; /* # of metaslabs needed to be flushed */
uint64_t lse_blkcount; /* blocks held by this entry */
list_node_t lse_node;
} log_summary_entry_t;
typedef struct spa_unflushed_stats {
/* used for memory heuristic */
uint64_t sus_memused; /* current memory used for unflushed trees */
/* used for block heuristic */
uint64_t sus_blocklimit; /* max # of log blocks allowed */
uint64_t sus_nblocks; /* # of blocks in log space maps currently */
} spa_unflushed_stats_t;
typedef struct spa_log_sm {
uint64_t sls_sm_obj; /* space map object ID */
uint64_t sls_txg; /* txg logged on the space map */
uint64_t sls_nblocks; /* number of blocks in this log */
uint64_t sls_mscount; /* # of metaslabs flushed in the log's txg */
avl_node_t sls_node; /* node in spa_sm_logs_by_txg */
} spa_log_sm_t;
int spa_ld_log_spacemaps(spa_t *);
void spa_generate_syncing_log_sm(spa_t *, dmu_tx_t *);
void spa_flush_metaslabs(spa_t *, dmu_tx_t *);
void spa_sync_close_syncing_log_sm(spa_t *);
void spa_cleanup_old_sm_logs(spa_t *, dmu_tx_t *);
uint64_t spa_log_sm_blocklimit(spa_t *);
void spa_log_sm_set_blocklimit(spa_t *);
uint64_t spa_log_sm_nblocks(spa_t *);
uint64_t spa_log_sm_memused(spa_t *);
void spa_log_sm_decrement_mscount(spa_t *, uint64_t);
void spa_log_sm_increment_current_mscount(spa_t *);
void spa_log_summary_add_flushed_metaslab(spa_t *);
void spa_log_summary_decrement_mscount(spa_t *, uint64_t);
void spa_log_summary_decrement_blkcount(spa_t *, uint64_t);
boolean_t spa_flush_all_logs_requested(spa_t *);
extern int zfs_keep_log_spacemaps_at_export;
#endif /* _SYS_SPA_LOG_SPACEMAP_H */
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