Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966363AbcKAOTM (ORCPT ); Tue, 1 Nov 2016 10:19:12 -0400 Received: from verein.lst.de ([213.95.11.211]:53547 "EHLO newverein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966318AbcKAOTK (ORCPT ); Tue, 1 Nov 2016 10:19:10 -0400 Date: Tue, 1 Nov 2016 15:19:08 +0100 From: Christoph Hellwig To: Ming Lei Cc: Christoph Hellwig , Jens Axboe , linux-block , Linux Kernel Mailing List , Kent Overstreet Subject: Re: [PATCH 1/2] block: add bio_iov_iter_get_pages() Message-ID: <20161101141908.GB17142@lst.de> References: <1477936765-8828-1-git-send-email-hch@lst.de> <1477936765-8828-2-git-send-email-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 413 Lines: 8 On Tue, Nov 01, 2016 at 09:05:00AM +0800, Ming Lei wrote: > > + size = iov_iter_get_pages(iter, pages, LONG_MAX, nr_pages, &offset); > > BTW, if there is one multi-page version of get_user_pages_fast() and > iov_iter_get_pages(), size of page array can be reduced too. There isn't at the moment. I have some plans for it, but it will require lots of mm and arch changes, so I'd like to keep it separate.