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41878d57ea
Implement BRT (Block Reference Table) prefetch functionality similar to existing DDT prefetch. This allows preloading BRT metadata into ARC to improve performance for block cloning operations and frees of earlier cloned blocks. Make -t parameter optional. When omitted, prefetch all supported metadata types (both DDT and BRT now). Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com> Closes #17890
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
// SPDX-License-Identifier: CDDL-1.0
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/*
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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 https://opensource.org/licenses/CDDL-1.0.
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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) 2020, 2021, 2022 by Pawel Jakub Dawidek
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*/
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#ifndef _SYS_BRT_H
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#define _SYS_BRT_H
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#include <sys/sysmacros.h>
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#include <sys/types.h>
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#include <sys/fs/zfs.h>
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#include <sys/zio.h>
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#include <sys/dmu.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern boolean_t brt_entry_decref(spa_t *spa, const blkptr_t *bp);
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extern uint64_t brt_entry_get_refcount(spa_t *spa, const blkptr_t *bp);
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extern uint64_t brt_get_dspace(spa_t *spa);
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extern uint64_t brt_get_used(spa_t *spa);
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extern uint64_t brt_get_saved(spa_t *spa);
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extern uint64_t brt_get_ratio(spa_t *spa);
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extern boolean_t brt_maybe_exists(spa_t *spa, const blkptr_t *bp);
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extern void brt_init(void);
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extern void brt_fini(void);
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extern void brt_pending_add(spa_t *spa, const blkptr_t *bp, dmu_tx_t *tx);
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extern void brt_pending_remove(spa_t *spa, const blkptr_t *bp, dmu_tx_t *tx);
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extern void brt_pending_apply(spa_t *spa, uint64_t txg);
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extern void brt_create(spa_t *spa);
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extern int brt_load(spa_t *spa);
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extern void brt_unload(spa_t *spa);
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extern void brt_sync(spa_t *spa, uint64_t txg);
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extern void brt_prefetch_all(spa_t *spa);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_BRT_H */
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