delphij 3af844143a Add locking around access to parent node, and bail out when the parent
node is already freed rather than panicking the system.

PR:		kern/122038
Submitted by:	gk
Tested by:	pho
MFC after:	1 week
2009-10-11 07:03:56 +00:00
..
2009-10-05 20:21:41 +00:00
2009-09-21 08:37:57 +00:00
2009-10-11 01:54:00 +00:00
2009-06-25 16:48:13 +00:00
2009-10-01 10:46:22 +00:00