K 10
svn:author
V 2
mm
K 8
svn:date
V 27
2011-10-18T13:58:22.712764Z
K 7
svn:log
V 368
Import fix for Illumos bug #1475 to reduce diff against upstream.

Panic caused by this bug was already partially fixed by pjd@
in p4 CH 185940 and 185942.

Reference:
1475 zfs spill block hold can access invalid spill blkptr
https://www.illumos.org/issues/1475

Reviewed by:	delphij
Obtained from:	Illumos (issue 1475, changeset 13469:b8e89e5c4167)
MFC after:	1 week

END