[patch 0/2] introduce /dev/hugetlb char device

[Ken Chen]

Introduce /dev/hugetlb device that behaves similar to /dev/zero for
allocating anonymous hugetlb page.  It is especially beneficial that
application developers can have an easy way to create MAP_PRIVATE
hugetlb mappings without all the fuss about the hugetlbfs filesystem.

Two follow on patches has more detail description for each changeset.

Signed-off-by: Ken Chen <kenchen@xxxxxxxxxx>
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