Tor Egge e7673b8424 Fix locking violations during page wiring:
- vm map entries are not valid after the map has been unlocked.

 - An exclusive lock on the map is needed before calling
   vm_map_simplify_entry().

Fix cleanup after page wiring failure to unwire all pages that had been
successfully wired before the failure was detected.

Reviewed by:	dillon
2001-10-14 20:47:08 +00:00
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