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Fix race between dmu_objset_prefetch() invoked from

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zfs_ioc_dataset_list_next() and dsl_dir_destroy_check() indirectly
invoked from dmu_recv_existing_end() via dsl_dataset_destroy() by not
prefetching temporary clones, as these count as always inconsistent.
In addition, do not prefetch hidden datasets at all as we are not
going to process these later.

Filed as Illumos Bug #1346

PR:		kern/157728
Tested by:	Borja Marcos <borjam@sarenet.es>, mm
Reviewed by:	pjd
Approved by:	re (kib)
MFC after:	1 week
This commit is contained in:
Martin Matuska 2011-08-13 10:58:53 +00:00
parent bc69c09054
commit cc82ff1c96
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=224814
1 changed files with 2 additions and 1 deletions
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3
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c
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@ -1964,7 +1964,8 @@ zfs_ioc_dataset_list_next(zfs_cmd_t *zc)
int len = sizeof (zc->zc_name) - (p - zc->zc_name);
while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0)
(void) dmu_objset_prefetch(zc->zc_name, NULL);
if (dataset_name_hidden(zc->zc_name) == B_FALSE)
(void) dmu_objset_prefetch(zc->zc_name, NULL);
}
do {