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userfaultfd: non-cooperative: add madvise() event for MADV_DONTNEED r…
…equest If the page is punched out of the address space the uffd reader should know this and zeromap the respective area in case of the #PF event. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Pavel Emelyanov <[email protected]> Signed-off-by: Mike Rapoport <[email protected]> Signed-off-by: Andrea Arcangeli <[email protected]> Cc: "Dr. David Alan Gilbert" <[email protected]> Cc: Hillf Danton <[email protected]> Cc: Michael Rapoport <[email protected]> Cc: Mike Kravetz <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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