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SubjectRe: [PATCH] block: Fix LSF default inconsistency
On Sat, 13 Dec 2008, KOSAKI Motohiro wrote:
> >> Me neither, lets ask the originator of the patch. Rik, why is
> >> unevictable lru an option?
> >
> > I think we had some reasons to keep it as a separate config
> > option during development, but nowadays we might as well
> > put it all just under CONFIG_SWAP...
> I'm sad ;)
> To move mlocked file cache page to unevictable list is useful although
> swapless embedded device.

Yes, I don't understand why Rik suggested CONFIG_SWAP for it either.

> Actually, number of scanning pages of reclaim is calculated by number
> of pages in list.
> if unevictable page stay in evictable list a lot, reclaim logic can
> calculate wrong scanning number.

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