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Andrea Arcangeli
c1a4de99fa
This implements mcopy_atomic and mfill_zeropage that are the lowlevel VM methods that are invoked respectively by the UFFDIO_COPY and UFFDIO_ZEROPAGE userfaultfd commands. Signed-off-by: Andrea Arcangeli <[email protected]> Acked-by: Pavel Emelyanov <[email protected]> Cc: Sanidhya Kashyap <[email protected]> Cc: [email protected] Cc: "Kirill A. Shutemov" <[email protected]> Cc: Andres Lagar-Cavilla <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Paolo Bonzini <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Hugh Dickins <[email protected]> Cc: Peter Feiner <[email protected]> Cc: "Dr. David Alan Gilbert" <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: "Huangpeng (Peter)" <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>