kern/157728: commit references a PR

[dfilter service]

The following reply was made to PR kern/157728; it has been noted by GNATS.

From: dfilter at FreeBSD.ORG (dfilter service)
To: bug-followup at FreeBSD.org
Cc:  
Subject: Re: kern/157728: commit references a PR
Date: Sat, 13 Aug 2011 10:59:07 +0000 (UTC)

 Author: mm
 Date: Sat Aug 13 10:58:53 2011
 New Revision: 224814
 URL: http://svn.freebsd.org/changeset/base/224814
 
 Log:
   Fix race between dmu_objset_prefetch() invoked from
   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 at sarenet.es>, mm
   Reviewed by:	pjd
   Approved by:	re (kib)
   MFC after:	1 week
 
 Modified:
   head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c
 
 Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c
 ==============================================================================
 --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c	Sat Aug 13 10:43:56 2011	(r224813)
 +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c	Sat Aug 13 10:58:53 2011	(r224814)
 @@ -1964,7 +1964,8 @@ top:
  		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 {
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