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SubjectRe: 2.4.19pre1aa1
On Tue, Mar 05, 2002 at 07:26:04PM +0100, Andrea Arcangeli wrote:

> Another approch would be to add the pages backing the bh into the lru
> too, but then we'd need to mess with the slab and new bitflags, new
> methods and so I don't think it's the best solution. The only good
> reason for putting new kind of entries in the lru would be to age them
> too the same way as the other pages, but we don't need that with the bh
> (they're just in, and we mostly care only about the page age, not the bh
> age).

For 2.5 I kind of like this idea. There is one issue though: to make
this work really well we'd probably need a ->prepareforfreepage()
or similar page op (which for page cache pages can be equal to writepage()
) which the vm can use to prepare this page for freeing.
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