Alan Cox b10ed4a911 Replace all uses of the vm page queues lock by a r/w lock that is private ... to this pmap.c. This new r/w lock is used primarily to synchronize access to the TTE lists. However, it will be used in a somewhat unconventional way. As finer-grained TTE list locking is added to each of the pmap functions that acquire this r/w lock, its acquisition will be changed from write to read, enabling concurrent execution of the pmap functions with finer-grained locking. Reviewed by: attilio Tested by: flo MFC after: 10 days		2012-05-29 01:52:38 +00:00
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