John Baldwin 645f1f4ea3 Push down Giant in the vlnru kproc main loop so that it is only acquired
around calls to vlrureclaim() on non-MPSAFE filesystems.  Specifically,
vnlru no longer needs Giant for the common case of waking up and deciding
there is nothing for it to do.

MFC after:	2 weeks
2009-01-23 22:08:54 +00:00
..
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