From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 11 May 2002 14:37:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 11 May 2002 14:37:12 -0400 Received: from bitmover.com ([192.132.92.2]:31398 "EHLO bitmover.com") by vger.kernel.org with ESMTP id ; Sat, 11 May 2002 14:37:10 -0400 Date: Sat, 11 May 2002 11:37:10 -0700 From: Larry McVoy To: Linus Torvalds Cc: Larry McVoy , Gerrit Huizenga , Lincoln Dale , Andrew Morton , Alan Cox , Martin Dalecki , Padraig Brady , Anton Altaparmakov , Kernel Mailing List Subject: Re: O_DIRECT performance impact on 2.4.18 (was: Re: [PATCH] 2.5.14 IDE 56) Message-ID: <20020511113710.C30126@work.bitmover.com> Mail-Followup-To: Larry McVoy , Linus Torvalds , Larry McVoy , Gerrit Huizenga , Lincoln Dale , Andrew Morton , Alan Cox , Martin Dalecki , Padraig Brady , Anton Altaparmakov , Kernel Mailing List In-Reply-To: <20020511111935.B30126@work.bitmover.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, May 11, 2002 at 11:35:21AM -0700, Linus Torvalds wrote: > See my details on doing the perfect zero-copy copy thing. > > The mmap doesn't actually touch the page tables - it ends up being nothing > but a "placeholder". Huh, I must have missed something, does the mmap() not create any page tables at all? -- --- Larry McVoy lm at bitmover.com http://www.bitmover.com/lm