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Illumos 6681 - zfs list burning lots of time in dodefault() via dsl_prop_*

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6681 zfs list burning lots of time in dodefault() via dsl_prop_*
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Approved by: Matthew Ahrens <mahrens@delphix.com>

References:
  https://www.illumos.org/issues/6681
  https://github.com/illumos/illumos-gate/commit/d09e447

Ported-by: kernelOfTruth kerneloftruth@gmail.com
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #4406
This commit is contained in:
Alex Wilson 2016-03-12 00:25:32 +01:00 committed by Brian Behlendorf
parent d76d9c696a
commit 887d1e60ef
1 changed files with 6 additions and 7 deletions
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13
module/zfs/dsl_prop.c
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@ -22,6 +22,7 @@
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
* Copyright (c) 2013 Martin Matuska. All rights reserved.
* Copyright 2015, Joyent, Inc.
*/
#include <sys/zfs_context.h>
@ -42,16 +43,14 @@
#define ZPROP_RECVD_SUFFIX "$recvd"
static int
dodefault(const char *propname, int intsz, int numints, void *buf)
dodefault(zfs_prop_t prop, int intsz, int numints, void *buf)
{
zfs_prop_t prop;
/*
* The setonce properties are read-only, BUT they still
* have a default value that can be used as the initial
* value.
*/
if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL ||
if (prop == ZPROP_INVAL ||
(zfs_prop_readonly(prop) && !zfs_prop_setonce(prop)))
return (SET_ERROR(ENOENT));
@ -149,7 +148,7 @@ dsl_prop_get_dd(dsl_dir_t *dd, const char *propname,
}
if (err == ENOENT)
err = dodefault(propname, intsz, numints, buf);
err = dodefault(prop, intsz, numints, buf);
strfree(inheritstr);
strfree(recvdstr);
@ -660,7 +659,7 @@ dsl_prop_set_sync_impl(dsl_dataset_t *ds, const char *propname,
int err;
uint64_t version = spa_version(ds->ds_dir->dd_pool->dp_spa);
isint = (dodefault(propname, 8, 1, &intval) == 0);
isint = (dodefault(zfs_name_to_prop(propname), 8, 1, &intval) == 0);
if (ds->ds_is_snapshot) {
ASSERT(version >= SPA_VERSION_SNAP_PROPS);
@ -1218,7 +1217,7 @@ dsl_prop_nvlist_add_uint64(nvlist_t *nv, zfs_prop_t prop, uint64_t value)
VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0);
VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, value) == 0);
/* Indicate the default source if we can. */
if (dodefault(propname, 8, 1, &default_value) == 0 &&
if (dodefault(prop, 8, 1, &default_value) == 0 &&
value == default_value) {
VERIFY(nvlist_add_string(propval, ZPROP_SOURCE, "") == 0);
}