95fd54a1c5
3740 Poor ZFS send / receive performance due to snapshot
hold / release processing
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Christopher Siden <christopher.siden@delphix.com>
References:
https://www.illumos.org/issues/3740
illumos/illumos-gate@a7a845e4bf
Ported-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #1775
Porting notes:
1. 13fe019870 introduced a merge conflict
in dsl_dataset_user_release_tmp where some variables were moved
outside of the preprocessor directive.
2. dea9dfefdd747534b3846845629d2200f0616dad made the previous merge
conflict worse by switching KM_SLEEP to KM_PUSHPAGE. This is notable
because this commit refactors the code, adding a new KM_SLEEP
allocation. It is not clear to me whether this should be converted
to KM_PUSHPAGE.
3. We had a merge conflict in libzfs_sendrecv.c because of copyright
notices.
4. Several small C99 compatibility fixed were made.
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
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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 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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* Copyright (c) 2012 by Delphix. All rights reserved.
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* Copyright (c) 2012, Joyent, Inc. All rights reserved.
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* Copyright (c) 2013 Steven Hartland. All rights reserved.
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*/
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#ifndef _SYS_DSL_USERHOLD_H
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#define _SYS_DSL_USERHOLD_H
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#include <sys/nvpair.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct dsl_pool;
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struct dsl_dataset;
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struct dmu_tx;
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int dsl_dataset_user_hold(nvlist_t *holds, minor_t cleanup_minor,
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nvlist_t *errlist);
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int dsl_dataset_user_release(nvlist_t *holds, nvlist_t *errlist);
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int dsl_dataset_get_holds(const char *dsname, nvlist_t *nvl);
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void dsl_dataset_user_release_tmp(struct dsl_pool *dp, nvlist_t *holds);
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int dsl_dataset_user_hold_check_one(struct dsl_dataset *ds, const char *htag,
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boolean_t temphold, struct dmu_tx *tx);
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void dsl_dataset_user_hold_sync_one(struct dsl_dataset *ds, const char *htag,
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minor_t minor, uint64_t now, struct dmu_tx *tx);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_DSL_USERHOLD_H */
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