From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 9 May 2001 11:05:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 9 May 2001 11:05:11 -0400 Received: from penguin.e-mind.com ([195.223.140.120]:44906 "EHLO penguin.e-mind.com") by vger.kernel.org with ESMTP id ; Wed, 9 May 2001 11:04:52 -0400 Date: Wed, 9 May 2001 17:04:16 +0200 From: Andrea Arcangeli To: Reto Baettig Cc: Jeff Garzik , Martin Dalecki , linux-kernel@vger.kernel.org, "Stephen C. Tweedie" , Linus Torvalds , Alexander Viro , Jens Axboe Subject: Re: blkdev in pagecache Message-ID: <20010509170416.U2506@athlon.random> In-Reply-To: <20010509043456.A2506@athlon.random> <3AF90A3D.7DD7A605@evision-ventures.com> <3AF93CA2.F2E8C5DB@mandrakesoft.com> <3AF95C2A.1765681E@scs.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3AF95C2A.1765681E@scs.ch>; from baettig@scs.ch on Wed, May 09, 2001 at 05:03:06PM +0200 X-GnuPG-Key-URL: http://e-mind.com/~andrea/aa.gnupg.asc X-PGP-Key-URL: http://e-mind.com/~andrea/aa.asc Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 09, 2001 at 05:03:06PM +0200, Reto Baettig wrote: > Jeff Garzik schrieb: > > > > Martin Dalecki wrote: > > > > - I force the virtual blocksize for all the blkdev I/O > > > > (buffered and direct) to work with a 4096 bytes granularity instead of > > > > > > You mean PAGE_SIZE :-). > > Or maybe 8192 bytes on alphas ?!? ;-) Again, see my argument with Jens, if we make it 8k we risk triggering lowlevel driver assumption about b_size being <= 4k. At least on my alpha the fs has a 4k blocksize and I think I never tested myself using a b_size of 8k yet and so I didn't wanted to put too many unknown variables into the first equation ;). Andrea