jeff d673a48266 - Don't panic if we can't lock a child in lookup, return an error instead.
- Only unlock the directory if this is a DOTDOT lookup.  Previously this
   code could have deadlocked if there was a DOTDOT lookup with LOCKPARENT
   set and another thread was locking the other way up the tree.

Sponsored by:	Isilon Systems, Inc.
2005-03-28 13:39:16 +00:00
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