Re: [PATCH -mm] vmscan: make mapped executable pages the first classcitizen

[Rik van Riel]

Christoph Lameter wrote:
> On Thu, 7 May 2009, Peter Zijlstra wrote:
>
>   
> > It re-instates the young bit for PROT_EXEC pages, so that they will only
> > be paged when they are really cold, or there is severe pressure.
> >     
>
> But they are rescanned until then. Really cold means what exactly? I do a
> back up of a few hundred gigabytes and do not use firefox while the backup
> is ongoing. Will the firefox pages still be in memory or not?
>   
The patch with the subject "[PATCH] vmscan: evict use-once pages first (v3)"
together with this patch should make sure that it stays in memory.
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