From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx195.postini.com [74.125.245.195]) by kanga.kvack.org (Postfix) with SMTP id 069346B0044 for ; Sat, 24 Nov 2012 10:06:30 -0500 (EST) Received: by mail-qa0-f48.google.com with SMTP id s11so2295273qaa.14 for ; Sat, 24 Nov 2012 07:06:30 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20121122154107.GB11736@localhost> References: <1353433362.85184.YahooMailNeo@web141101.mail.bf1.yahoo.com> <20121120182500.GH1408@quack.suse.cz> <1353485020.53500.YahooMailNeo@web141104.mail.bf1.yahoo.com> <1353485630.17455.YahooMailNeo@web141106.mail.bf1.yahoo.com> <50AC9220.70202@gmail.com> <20121121090204.GA9064@localhost> <50ACA209.9000101@gmail.com> <1353491880.11679.YahooMailNeo@web141102.mail.bf1.yahoo.com> <50ACA634.5000007@gmail.com> <20121122154107.GB11736@localhost> From: =?UTF-8?B?TWV0aW4gRMO2xZ9sw7w=?= Date: Sat, 24 Nov 2012 17:06:09 +0200 Message-ID: Subject: Re: Problem in Page Cache Replacement Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Fengguang Wu Cc: Jaegeuk Hanse , Jan Kara , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" On Thu, Nov 22, 2012 at 5:41 PM, Fengguang Wu wrot= e: > On Wed, Nov 21, 2012 at 12:07:22PM +0200, Metin D=C3=B6=C5=9Fl=C3=BC wrot= e: >> On Wed, Nov 21, 2012 at 12:00 PM, Jaegeuk Hanse 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? It was ext3. >> data-2 pages are in state : referenced,uptodate,lru,mappedtodisk > > Thanks, > Fengguang --=20 Metin D=C3=B6=C5=9Fl=C3=BC -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org