Author: mm
Date: Sat Jun 12 11:24:10 2010
New Revision: 209098
URL: http://svn.freebsd.org/changeset/base/209098
Log:
Fix zpool resilver stalls with spa_scrub_thread in a 3 way deadlock
OpenSolaris onnv-revision: 9997:174d75a29a1c
Obtained from: OpenSolaris (Bug ID 6843235)
Approved by: pjd, delphij (mentor)
MFC after: 3 days
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scrub.c
Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scrub.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scrub.c Sat Jun
12 11:22:45 2010 (r209097)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scrub.c Sat Jun
12 11:24:10 2010 (r209098)
@@ -1008,6 +1008,8 @@ dsl_pool_scrub_clean_cb(dsl_pool_t *dp,
int
dsl_pool_scrub_clean(dsl_pool_t *dp)
{
+ spa_t *spa = dp->dp_spa;
+
/*
* Purge all vdev caches. We do this here rather than in sync
* context because this requires a writer lock on the spa_config
@@ -1015,11 +1017,11 @@ dsl_pool_scrub_clean(dsl_pool_t *dp)
* spa_scrub_reopen flag indicates that vdev_open() should not
* attempt to start another scrub.
*/
- spa_config_enter(dp->dp_spa, SCL_ALL, FTAG, RW_WRITER);
- dp->dp_spa->spa_scrub_reopen = B_TRUE;
- vdev_reopen(dp->dp_spa->spa_root_vdev);
- dp->dp_spa->spa_scrub_reopen = B_FALSE;
- spa_config_exit(dp->dp_spa, SCL_ALL, FTAG);
+ spa_vdev_state_enter(spa);
+ spa->spa_scrub_reopen = B_TRUE;
+ vdev_reopen(spa->spa_root_vdev);
+ spa->spa_scrub_reopen = B_FALSE;
+ (void) spa_vdev_state_exit(spa, NULL, 0);
return (dsl_pool_scrub_setup(dp, SCRUB_FUNC_CLEAN));
}
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