From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 25 Jan 2001 13:19:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 25 Jan 2001 13:19:05 -0500 Received: from zeus.kernel.org ([209.10.41.242]:50648 "EHLO zeus.kernel.org") by vger.kernel.org with ESMTP id ; Thu, 25 Jan 2001 13:18:43 -0500 Date: Thu, 25 Jan 2001 18:16:21 +0000 From: "Stephen C. Tweedie" To: David Wragg Cc: "Eric W. Biederman" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Stephen Tweedie Subject: Re: limit on number of kmapped pages Message-ID: <20010125181621.W11607@redhat.com> In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2i In-Reply-To: ; from dpw@doc.ic.ac.uk on Wed, Jan 24, 2001 at 12:35:12AM +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Wed, Jan 24, 2001 at 12:35:12AM +0000, David Wragg wrote: > > > And why do the pages need to be kmapped? > > They only need to be kmapped while data is being copied into them. But you only need to kmap one page at a time during the copy. There is absolutely no need to copy the whole chunk at once. --Stephen - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/