tree 1c2949b2f2bf0fcc03aeb559fa01e15f3831346c
parent e6a2b429ba6c502abd2a89a43be27035de0eb172
author Andrea Arcangeli <aarcange@redhat.com> 1431624678 +0200
committer Sasha Levin <sasha.levin@oracle.com> 1431944940 -0400

userfaultfd: mcopy_atomic|mfill_zeropage: UFFDIO_COPY|UFFDIO_ZEROPAGE preparation

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 <aarcange@redhat.com>