On Tue, Aug 13, 2013 at 4:10 PM, Nathan Zimmer [off-list ref] wrote:

The only mm structure we are adding to is a new flag in page->flags.
That didn't seem too much.

I don't agree.

I see only downsides, and no upsides. Doing the same thing *without*
the downsides seems straightforward, so I simply see no reason for any
extra flags or tests at runtime.

               Linus

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