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SubjectRe: [RFC 6/8] In order putback lru core
On 04/26/2011 12:25 PM, Minchan Kim wrote:

> But this approach has a problem on contiguous pages.
> In this case, my idea can not work since friend pages are isolated, too.
> It means prev_page->next == next_page always is false and both pages are not
> LRU any more at that time. It's pointed out by Rik at LSF/MM summit.
> So for solving the problem, I can change the idea.
> I think we don't need both friend(prev, next) pages relation but
> just consider either prev or next page that it is still same LRU.

> Any comment?

If the friend pages are isolated too, then your condition
"either prev or next page that it is still same LRU" is
likely to be false, no?


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