Can the dirtiness of pages of a mmap be found from userspace?

Question

Can dirtiness of pages of a (non-shared) mmap be accessed from userspace under linux 2.6.30+? Platform-specific hacks and kludges welcome.

Ideally, I\'m looking for

Answer 1

If your array of bits is small enough, perhaps you can use the debug registers on Intel (though I am not sure on how it is done on linux).