From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932236AbVHKDIW (ORCPT ); Wed, 10 Aug 2005 23:08:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932238AbVHKDIW (ORCPT ); Wed, 10 Aug 2005 23:08:22 -0400 Received: from zproxy.gmail.com ([64.233.162.204]:55499 "EHLO zproxy.gmail.com") by vger.kernel.org with ESMTP id S932236AbVHKDIW convert rfc822-to-8bit (ORCPT ); Wed, 10 Aug 2005 23:08:22 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=LnBN+b9mmNFsWqvfTyxczXQzBW9MF8B3skL5KgSoJ0bynjNeea43dZ++UCnr5Ba2VmApNWaf7e3MInifwQdGv+rpy5hMXTykpvvsdFXL3G/oMAFFMTMcoa1+T04l+INXdWjTLnAob5j7lcxtRRl+uT0ByHpZS7BjNa74vzyQvzo= Message-ID: Date: Thu, 11 Aug 2005 12:08:19 +0900 From: Magnus Damm To: Andrew Morton Subject: Re: How to reclaim inode pages on demand Cc: Mel Gorman , linux-kernel@vger.kernel.org In-Reply-To: <20050810101714.147e1333.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <20050808160844.04d1f7ac.akpm@osdl.org> <20050810101714.147e1333.akpm@osdl.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 8/11/05, Andrew Morton wrote: > Mel Gorman wrote: > > The majority of pages I am seeing no longer have page->mapping set. Does > > this mean they are in the process of being cleared up? > > They're just anonymous pages, aren't they? But you said "pages that are > being used for inodes". Confused. I thought page->mapping was used by rmap for both inode-backed and anonymous pages. And the PAGE_MAPPING_ANON bit was used to determine that page->mapping points to struct anon_vma instead of struct address_space. When is page->mapping NULL? / magnus