Getting dirtied pages info

Prateek Sharma prateek3.14 at
Thu Sep 29 12:16:26 EDT 2011

Hi all,
     What would be a good way to get a list of all pages(lets say
pfns) dirtied in a particular time interval ?
I am reading about MMU_notifiers but i think a simpler, light-weight
solution might work.. I came across the page-dirtied bits...are those
saved somewhere by the kernel on context-switches?

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