Re: [PATCH 3/3] Provide control over unmapped pages

Minchan Kim
2010-12-01T08:18:54Z

On Wed, Dec 1, 2010 at 2:22 PM, Balbir Singh <balbir@linux.vnet.ibm.com> wrote:
> * Balbir Singh <balbir@linux.vnet.ibm.com> [2010-12-01 10:24:21]:
>
>> * Andrew Morton <akpm@linux-foundation.org> [2010-11-30 14:25:09]:
>> > So you're OK with shoving all this flotsam into 100,000,000 cellphones?
>> > This was a pretty outrageous patchset!
>>
>> I'll do a better one, BTW, a lot of embedded folks are interested in
>> page cache control outside of cgroup behaviour.

Yes. Embedded people(at least, me) want it. That's because they don't
have any swap device so they could reclaim only page cache page.
And many page cache pages are mapped at address space of
application(ex, android uses java model so many pages are mapped by
application's address space). It means it's hard to reclaim them
without lagging.
So I have a interest in this patch.

--
Kind regards,
Minchan Kim