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um: Mark stub pages mapping with VM_PFNMAP
authorRichard Weinberger <richard@nod.at>
Sun, 12 May 2013 21:26:03 +0000 (23:26 +0200)
committerRichard Weinberger <richard@nod.at>
Fri, 19 Jul 2013 08:45:17 +0000 (10:45 +0200)
Ensure that a process cannot destroy his stub pages with
using MADV_DONTNEED and friends.

Reported-by: toralf.foerster@gmx.de
Signed-off-by: Richard Weinberger <richard@nod.at>

No differences found
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