Advanced Operating Systems   COMP9242 2002/S2

UNSW

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Revoke Mappings: fpage_unmap System Call Unmaps pages directly or indirectly mapped from caller's address space. Unmapping may be: partial (revert to read-only, ``remap''), or complete (pages vanish from other address spaces, ``flush''). The fpage argument defines a region in the caller's address space. All pages within that region which are mapped into other address spaces will be remapped or flushed. Mappings in the caller's address space are unaffected (``other''), or also unmapped (``all'').