From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751258AbdAQIOU (ORCPT ); Tue, 17 Jan 2017 03:14:20 -0500 Received: from mail-lf0-f67.google.com ([209.85.215.67]:35506 "EHLO mail-lf0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751012AbdAQINn (ORCPT ); Tue, 17 Jan 2017 03:13:43 -0500 MIME-Version: 1.0 In-Reply-To: <20170117075011.GA9732@infradead.org> References: <1482854250-13481-1-git-send-email-tom.leiming@gmail.com> <20170116151813.GA28410@infradead.org> <20170117075011.GA9732@infradead.org> From: Ming Lei Date: Tue, 17 Jan 2017 16:13:39 +0800 Message-ID: Subject: Re: [PATCH v1 00/54] block: support multipage bvec To: Christoph Hellwig Cc: Jens Axboe , Linux Kernel Mailing List , linux-block , Al Viro , Andrew Morton , Kent Overstreet Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 17, 2017 at 3:50 PM, Christoph Hellwig wrote: > On Tue, Jan 17, 2017 at 10:40:36AM +0800, Ming Lei wrote: >> IMO, the only one left is raid(1/5/10) which can be dealt with by the >> "NO_MP" flag. > > No, they can't in the long run. They need to handle the bvecs just > like everyone else. OK, looks raid(1/5/10) becomes blocker for multipage bvec now. I will study it a bit, and maybe need help from raid guys. Thanks, Ming Lei