On Wed, Nov 21, 2012 at 12:07:22PM +0200, Metin Döşlü wrote:
> On Wed, Nov 21, 2012 at 12:00 PM, Jaegeuk Hanse <jaegeuk.ha...@gmail.com>
> wrote:
> >
> > On 11/21/2012 05:58 PM, metin d wrote:
> >
> > Hi Fengguang,
> >
> > I run tests and attached the results. The line below I guess shows the
> > data-1 page caches.
> >
> > 0x000000080000006c 6584051 25718
> > __RU_lA___________________P________
> > referenced,uptodate,lru,active,private
> >
> >
> > I thinks this is just one state of page cache pages.
>
> But why these page caches are in this state as opposed to other page
> caches. From the results I conclude that:
>
> data-1 pages are in state : referenced,uptodate,lru,active,private
I wonder if it's this code that stops data-1 pages from being
reclaimed:
shrink_page_list():
if (page_has_private(page)) {
if (!try_to_release_page(page, sc->gfp_mask))
goto activate_locked;
What's the filesystem used?
> data-2 pages are in state : referenced,uptodate,lru,mappedtodisk
Thanks,
Fengguang
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