From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754161AbcDCQbW (ORCPT ); Sun, 3 Apr 2016 12:31:22 -0400 Received: from mail-pa0-f50.google.com ([209.85.220.50]:32839 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752584AbcDCQbU (ORCPT ); Sun, 3 Apr 2016 12:31:20 -0400 From: Ming Lei To: Jens Axboe , linux-kernel@vger.kernel.org Cc: linux-block@vger.kernel.org, Christoph Hellwig , Al Viro , Anton Altaparmakov , xfs@oss.sgi.com, Dave Chinner , drbd-dev@lists.linbit.com, Philipp Reisner , Lars Ellenberg , Boaz Harrosh Subject: [PATCH v2 0/8] block: prepare for multipage bvecs Date: Mon, 4 Apr 2016 00:31:01 +0800 Message-Id: <1459701069-31406-1-git-send-email-ming.lei@canonical.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Interests[1] have been shown in multipage bvecs, so this patchset try to prepare for the support and do two things: 1) the 1st 4 patches use bvec iterator to implement iterate_bvec(), then we can drop the non-standard way for iterating bvec, which can be thought as a good cleanup for lib/iov_iter.c 2) remove BIO_MAX_SECTORS & BIO_MAX_SIZE, and now there is only one user for each. Once multipage bvecs is introduced, one bio may hold lots of sectors, and we should always use sort of BIO_MAX_VECS which should be introduced in future and is similiar with current BIO_MAX_PAGES. xfstests(-a auto) have been run and no regression found by this patchset against linus v4.6-rc1-next-20160329. V2: - rename bvec_iter.h as bvec.h - always include bvec.h into blk_types.h as suggested by Christoph V1: - don't move BIO_MAX_* to bvec_iter.h as pointed out by Christoph - run xfstests against v4.6-rc1-next-20160329 - add Reviewed-by - for 1,4 and 5, Reviewd-by not added, Christoph still expressed 'this looks fine to me.' drivers/block/drbd/drbd_int.h | 4 +-- fs/xfs/xfs_buf.c | 4 +-- include/linux/bio.h | 52 -------------------------------- include/linux/blk_types.h | 22 +------------- include/linux/bvec.h | 93 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ lib/iov_iter.c | 30 +++++++------------ 6 files changed, 107 insertions(+), 98 deletions(-) Thanks, Ming