Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261265AbTIKObT (ORCPT ); Thu, 11 Sep 2003 10:31:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261271AbTIKObS (ORCPT ); Thu, 11 Sep 2003 10:31:18 -0400 Received: from sphere.barak.net.il ([212.150.48.98]:6089 "EHLO sphere.barak.net.il") by vger.kernel.org with ESMTP id S261265AbTIKObP convert rfc822-to-8bit (ORCPT ); Thu, 11 Sep 2003 10:31:15 -0400 From: "Amir Hermelin" To: Subject: page cache and buffer cache in 2.4.18 and up Date: Thu, 11 Sep 2003 17:30:05 +0200 Organization: Montilio Message-ID: <003301c37879$938fda00$0601a8c0@CARTMAN> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 566 Lines: 15 Hi, Since the change in kernel 2.4, read and writes go both through the page and buffer cache. Is the cached data held twice (i.e. uses twice the memory)? I noticed that the struct page holds a pointer to a buffer-head list; does that list contain actual data, or just pointers into the cached page data? Thanks, Amir. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/