Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756532AbYGNDUo (ORCPT ); Sun, 13 Jul 2008 23:20:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754454AbYGNDUg (ORCPT ); Sun, 13 Jul 2008 23:20:36 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:44334 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752613AbYGNDUf (ORCPT ); Sun, 13 Jul 2008 23:20:35 -0400 Date: Sun, 13 Jul 2008 20:20:35 -0700 (PDT) Message-Id: <20080713.202035.172246136.davem@davemloft.net> To: fujita.tomonori@lab.ntt.co.jp Cc: andi@firstfloor.org, mpatocka@redhat.com, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, jens.axboe@oracle.com Subject: Re: [SUGGESTION]: drop virtual merge accounting in I/O requests From: David Miller In-Reply-To: <20080714111917S.fujita.tomonori@lab.ntt.co.jp> References: <487A61DD.6090304@firstfloor.org> <20080713.174119.71992292.davem@davemloft.net> <20080714111917S.fujita.tomonori@lab.ntt.co.jp> X-Mailer: Mew version 5.2 on Emacs 22.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 535 Lines: 13 From: FUJITA Tomonori Date: Mon, 14 Jul 2008 11:19:02 +0900 > Now IOMMUs don't ignore the max_segment_size. We hit this problem. It seems simply that max_segment_size needs to propagate down into the block layer VMERGE code so that it can act accordingly. -- 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/