dcec0a12c8
This patch is an async implementation of the existing sync zfs_unlinked_drain() function. This function is called at mount time and is responsible for freeing znodes that we didn't get to freeing before. We don't have to hold mounting of the dataset until the unlinked list is fully drained as is done now. Since we can process the unlinked set asynchronously this results in a better user experience when mounting a dataset with entries in the unlinked set. Reviewed by: Jorgen Lundman <lundman@lundman.net> Reviewed by: Tom Caputi <tcaputi@datto.com> Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Matt Ahrens <mahrens@delphix.com> Reviewed by: Paul Dagnelie <pcd@delphix.com> Signed-off-by: Alek Pinchuk <apinchuk@datto.com> Closes #8142
76 lines
2.3 KiB
C
76 lines
2.3 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) 2018 by Delphix. All rights reserved.
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* Copyright (c) 2018 Datto Inc.
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*/
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#ifndef _SYS_DATASET_KSTATS_H
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#define _SYS_DATASET_KSTATS_H
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#include <sys/aggsum.h>
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#include <sys/dmu.h>
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#include <sys/kstat.h>
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typedef struct dataset_aggsum_stats_t {
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aggsum_t das_writes;
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aggsum_t das_nwritten;
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aggsum_t das_reads;
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aggsum_t das_nread;
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aggsum_t das_nunlinks;
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aggsum_t das_nunlinked;
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} dataset_aggsum_stats_t;
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typedef struct dataset_kstat_values {
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kstat_named_t dkv_ds_name;
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kstat_named_t dkv_writes;
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kstat_named_t dkv_nwritten;
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kstat_named_t dkv_reads;
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kstat_named_t dkv_nread;
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/*
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* nunlinks is initialized to the unlinked set size on mount and
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* is incremented whenever a new entry is added to the unlinked set
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*/
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kstat_named_t dkv_nunlinks;
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/*
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* nunlinked is initialized to zero on mount and is incremented when an
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* entry is removed from the unlinked set
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*/
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kstat_named_t dkv_nunlinked;
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} dataset_kstat_values_t;
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typedef struct dataset_kstats {
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dataset_aggsum_stats_t dk_aggsums;
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kstat_t *dk_kstats;
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} dataset_kstats_t;
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void dataset_kstats_create(dataset_kstats_t *, objset_t *);
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void dataset_kstats_destroy(dataset_kstats_t *);
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void dataset_kstats_update_write_kstats(dataset_kstats_t *, int64_t);
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void dataset_kstats_update_read_kstats(dataset_kstats_t *, int64_t);
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void dataset_kstats_update_nunlinks_kstat(dataset_kstats_t *, int64_t);
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void dataset_kstats_update_nunlinked_kstat(dataset_kstats_t *, int64_t);
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#endif /* _SYS_DATASET_KSTATS_H */
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