o Relax locking assertions for pmap_enter_object() and add them also to architectures that currently don't have any o Introduce VM_OBJECT_LOCK_DOWNGRADE() which is basically a downgrade operation on the per-object rwlock o Use all the mechanisms above to make vm_map_pmap_enter() to work mostl of the times only with readlocks. Sponsored by: EMC / Isilon storage division Reviewed by: alc |
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