Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 2 Feb 2002 10:40:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 2 Feb 2002 10:39:56 -0500 Received: from garrincha.netbank.com.br ([200.203.199.88]:12041 "HELO netbank.com.br") by vger.kernel.org with SMTP id ; Sat, 2 Feb 2002 10:39:52 -0500 Date: Sat, 2 Feb 2002 13:39:34 -0200 (BRST) From: Rik van Riel X-X-Sender: To: Jeff Garzik Cc: , Subject: Re: [PATCH] Radix-tree pagecache for 2.5 In-Reply-To: <20020201144751.A32553@havoc.gtf.org> Message-ID: X-spambait: aardvark@kernelnewbies.org X-spammeplease: aardvark@nl.linux.org MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 1 Feb 2002, Jeff Garzik wrote: > > the biggest reason for this is that we *suck* at readahead for mmap.... > > Is there not also fault overhead and similar issues related to mmap(2) > in general, that are not present with read(2)/write(2)? If a fault is more expensive than a system call, we're doing something wrong in the page fault path ;) Rik -- "Linux holds advantages over the single-vendor commercial OS" -- Microsoft's "Competing with Linux" document http://www.surriel.com/ http://distro.conectiva.com/ - 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/