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SubjectRe: [patch 1/4] mempolicy: convert MPOL constants to enum
On Mon, 11 Feb 2008, David Rientjes wrote:

> The mempolicy mode constants, MPOL_DEFAULT, MPOL_PREFERRED, MPOL_BIND,
> and MPOL_INTERLEAVE, are better declared as part of an enum for type
> checking.
> The policy member of struct mempolicy is also converted from type short
> to type unsigned short. A negative policy does not have any legitimate
> meaning, so it is possible to change its type in preparation for adding
> optional mode flags later.

The second paragraphs seems to indicate that such an approach does not
work since we also use MPOL_xx constants to set flags in the memory

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