Messages in this thread | | | Date | Mon, 16 Jan 2006 16:24:02 -0800 | From | Suleiman Souhlal <> | Subject | Re: differences between MADV_FREE and MADV_DONTNEED |
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Eric W. Biederman wrote: > As I recall the logic with DONTNEED was to mark the mapping of > the page clean so the page didn't need to be swapped out, it could > just be dropped. > > That is why they anonymous and the file backed cases differ. > > Part of the point is to avoid the case of swapping the pages out if > the application doesn't care what is on them anymore.
Well, imho, MADV_DONTNEED should mean "I won't need this anytime soon", and MADV_FREE "I will never need this again".
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