dsl_synctask.c revision 18b4d8bec079b75ad50fe9aff3e8299cd9c10190
/*
* 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
* 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 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/dsl_pool.h>
#include <sys/dsl_synctask.h>
#include <sys/metaslab.h>
#define DST_AVG_BLKSHIFT 14
/* ARGSUSED */
static int
{
return (0);
}
{
return (dstg);
}
void
{
}
int
{
top:
/* Do a preliminary error check. */
#ifdef ZFS_DEBUG
/*
* Only check half the time, otherwise, the sync-context
* check will almost never fail.
*/
if (spa_get_random(2) == 0)
continue;
#endif
}
}
/*
* We don't generally have many sync tasks, so pay the price of
* add_tail to get the tasks executed in the right order.
*/
goto top;
}
}
void
{
/*
* We don't generally have many sync tasks, so pay the price of
* add_tail to get the tasks executed in the right order.
*/
}
void
{
}
}
void
{
/*
* Check for sufficient space. We just check against what's
* on-disk; we don't wany any in-flight accounting to get in our
* way, because open context may have already used up various
* in-core limits (arc_tempreserve, dsl_pool_tempreserve).
*/
/* MOS space is triple-dittoed, so we multiply by 3. */
return;
}
/*
* Check for errors by calling checkfuncs.
*/
}
/*
* Execute sync tasks.
*/
}
}
if (dstg->dstg_nowaiter)
}
int
{
int err;
return (err);
}
void
{
}