From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from pizda.ninka.net (pizda.ninka.net [216.101.162.242]) by dsl2.external.hp.com (Postfix) with ESMTP id 64870483E for ; Fri, 26 Sep 2003 08:18:18 -0600 (MDT) Date: Fri, 26 Sep 2003 07:04:50 -0700 From: "David S. Miller" To: Matthew Wilcox Cc: willy@debian.org, santosha@india.hp.com, sct@redhat.com, santosh.abraham@hp.com, randolph@tausq.org, parisc-linux@lists.parisc-linux.org Subject: Re: [parisc-linux] Fwd: Problems with raw interface. Message-Id: <20030926070450.603c5c33.davem@redhat.com> In-Reply-To: <20030926140948.GK24824@parcelfarce.linux.theplanet.co.uk> References: <20030926053805.63bda07a.davem@redhat.com> <200309261311.SAA27414@redsea.india.hp.com> <20030926055652.32ddbbc2.davem@redhat.com> <20030926132901.GJ24824@parcelfarce.linux.theplanet.co.uk> <20030926062143.20d85a72.davem@redhat.com> <20030926140948.GK24824@parcelfarce.linux.theplanet.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: parisc-linux-admin@lists.parisc-linux.org Errors-To: parisc-linux-admin@lists.parisc-linux.org List-Help: List-Post: List-Subscribe: , List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: On Fri, 26 Sep 2003 15:09:48 +0100 Matthew Wilcox wrote: > > You have to find a way to walk all the address spaces to figure out > > where the page is mapped. > > That's ridiculous. For a start, pages can't be mapped into multiple > address spaces without being in the page cache. How in the world can anonymous pages work then? Of course anonymous pages can be in multiple address spaces without being in the page cache.