Re: [VM PATCH] rotate_reclaimable_page fails frequently

[IWAMOTO Toshihiro <iwamoto@valinux.co.jp>]

At Mon, 6 Feb 2006 19:37:08 -0500 (EST),
Rik van Riel wrote:
> 
> On Sun, 5 Feb 2006, Shantanu Goel wrote:
> 
> > Ideally, for workloads that want to avoid paging as
> > much as possible, we should perhaps have a mode where
> > we never activate unmapped pages and let them all
> > reside on the inactive list.  mark_page_accessed()
> > would simply move an unmapped page to the head of the
> > inactive list on the 2nd reference.
> 
> Clock-pro (Peter's implementation, I still need to fix mine),
> should do the right thing automatically in situations like
> this...

Really?
IIRC, his patch used to have a logic to keep mapped pages hot, which
is similar to vanilla linux's reclaim_mapped thing, but it seems to be
commented out now.

--
IWAMOTO Toshihiro
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