Re: [patch 17/20] non-reclaimable mlocked pages

[Christoph Lameter]

On Wed, 19 Dec 2007, Nick Piggin wrote:

> These mlocked pages don't need to be on a non-reclaimable list,
> because we can find them again via the ptes when they become
> unlocked, and there is no point background scanning them, because
> they're always going to be locked while they're mlocked.

But there is something to be said for having a consistent scheme. Here we 
already introduce address space flags for one kind of unreclaimability. 
Isnt it possible to come up with a way to categorize pages that works 
(mostly) the same way for all types of pages with reclaim issues?

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