Messages in this thread | | | Date | Thu, 22 Nov 2012 23:41:07 +0800 | From | Fengguang Wu <> | Subject | Re: Problem in Page Cache Replacement |
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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.hanse@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
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