From patchwork Mon Jan 11 20:21:04 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Christie X-Patchwork-Id: 8011141 Return-Path: X-Original-To: patchwork-linux-block@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 37445BEEE5 for ; Mon, 11 Jan 2016 20:42:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3215F20166 for ; Mon, 11 Jan 2016 20:42:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 11D25201D3 for ; Mon, 11 Jan 2016 20:42:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933278AbcAKUmP (ORCPT ); Mon, 11 Jan 2016 15:42:15 -0500 Received: from mx1.redhat.com ([209.132.183.28]:48570 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964910AbcAKUVz (ORCPT ); Mon, 11 Jan 2016 15:21:55 -0500 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by mx1.redhat.com (Postfix) with ESMTPS id 6D628744; Mon, 11 Jan 2016 20:21:55 +0000 (UTC) Received: from rh2.redhat.com (unused [10.10.50.149] (may be forged)) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u0BKLZEZ008385; Mon, 11 Jan 2016 15:21:53 -0500 From: mchristi@redhat.com To: linux-f2fs-devel@lists.sourceforge.net, linux-ext4@vger.kernel.org, konrad.wilk@oracle.com, drbd-dev@lists.linbit.com, philipp.reisner@linbit.com, lars.ellenberg@linbit.com, linux-raid@vger.kernel.org, dm-devel@redhat.com, linux-fsdevel@vger.kernel.org, linux-bcache@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-mtd@lists.infradead.org, target-devel@vger.kernel.org, linux-btrfs@vger.kernel.org, osd-dev@open-osd.org, xfs@oss.sgi.com, ocfs2-devel@oss.oracle.com Cc: Mike Christie Subject: [PATCH 06/35] direct-io: set bi_op to REQ_OP Date: Mon, 11 Jan 2016 14:21:04 -0600 Message-Id: <1452543693-4440-7-git-send-email-mchristi@redhat.com> In-Reply-To: <1452543693-4440-1-git-send-email-mchristi@redhat.com> References: <1452543693-4440-1-git-send-email-mchristi@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Mike Christie This patch has the dio code set the bio bi_op to a REQ_OP. It also begins to convert btrfs's dio_submit_t related code, because of the submit_io callout use. In the btrfs_submit_direct change, I OR'd the op and flag back together. It is only temporary. The next patch will completely convert all the btrfs code paths. Signed-off-by: Mike Christie --- fs/btrfs/inode.c | 9 +++++---- fs/direct-io.c | 35 +++++++++++++++++++++-------------- include/linux/fs.h | 2 +- 3 files changed, 27 insertions(+), 19 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 00f27eb..06f88bf 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -8300,14 +8300,14 @@ out_err: return 0; } -static void btrfs_submit_direct(int rw, struct bio *dio_bio, - struct inode *inode, loff_t file_offset) +static void btrfs_submit_direct(struct bio *dio_bio, struct inode *inode, + loff_t file_offset) { struct btrfs_dio_private *dip = NULL; struct bio *io_bio = NULL; struct btrfs_io_bio *btrfs_bio; int skip_sum; - int write = rw & REQ_WRITE; + bool write = (dio_bio->bi_op == REQ_OP_WRITE); int ret = 0; skip_sum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM; @@ -8358,7 +8358,8 @@ static void btrfs_submit_direct(int rw, struct bio *dio_bio, dio_data->unsubmitted_oe_range_end; } - ret = btrfs_submit_direct_hook(rw, dip, skip_sum); + ret = btrfs_submit_direct_hook(dio_bio->bi_op | dio_bio->bi_rw, dip, + skip_sum); if (!ret) return; diff --git a/fs/direct-io.c b/fs/direct-io.c index 4400836..52134ba 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -108,7 +108,8 @@ struct dio_submit { /* dio_state communicated between submission path and end_io */ struct dio { int flags; /* doesn't change */ - int rw; + int op; + int op_flags; blk_qc_t bio_cookie; struct block_device *bio_bdev; struct inode *inode; @@ -163,7 +164,7 @@ static inline int dio_refill_pages(struct dio *dio, struct dio_submit *sdio) ret = iov_iter_get_pages(sdio->iter, dio->pages, LONG_MAX, DIO_PAGES, &sdio->from); - if (ret < 0 && sdio->blocks_available && (dio->rw & WRITE)) { + if (ret < 0 && sdio->blocks_available && (dio->op == REQ_OP_WRITE)) { struct page *page = ZERO_PAGE(0); /* * A memory fault, but the filesystem has some outstanding @@ -242,7 +243,8 @@ static ssize_t dio_complete(struct dio *dio, loff_t offset, ssize_t ret, transferred = dio->result; /* Check for short read case */ - if ((dio->rw == READ) && ((offset + transferred) > dio->i_size)) + if ((dio->op == REQ_OP_READ) && + ((offset + transferred) > dio->i_size)) transferred = dio->i_size - offset; } @@ -260,7 +262,7 @@ static ssize_t dio_complete(struct dio *dio, loff_t offset, ssize_t ret, inode_dio_end(dio->inode); if (is_async) { - if (dio->rw & WRITE) { + if (dio->op == REQ_OP_WRITE) { int err; err = generic_write_sync(dio->iocb->ki_filp, offset, @@ -369,7 +371,8 @@ dio_bio_alloc(struct dio *dio, struct dio_submit *sdio, bio->bi_bdev = bdev; bio->bi_iter.bi_sector = first_sector; - bio->bi_rw = dio->rw; + bio->bi_op = dio->op; + bio->bi_rw = dio->op_flags; if (dio->is_async) bio->bi_end_io = dio_bio_end_aio; else @@ -397,14 +400,13 @@ static inline void dio_bio_submit(struct dio *dio, struct dio_submit *sdio) dio->refcount++; spin_unlock_irqrestore(&dio->bio_lock, flags); - if (dio->is_async && dio->rw == READ && dio->should_dirty) + if (dio->is_async && dio->op == REQ_OP_READ && dio->should_dirty) bio_set_pages_dirty(bio); dio->bio_bdev = bio->bi_bdev; if (sdio->submit_io) { - sdio->submit_io(dio->rw, bio, dio->inode, - sdio->logical_offset_in_bio); + sdio->submit_io(bio, dio->inode, sdio->logical_offset_in_bio); dio->bio_cookie = BLK_QC_T_NONE; } else dio->bio_cookie = submit_bio(bio); @@ -472,14 +474,14 @@ static int dio_bio_complete(struct dio *dio, struct bio *bio) if (bio->bi_error) dio->io_error = -EIO; - if (dio->is_async && dio->rw == READ && dio->should_dirty) { + if (dio->is_async && dio->op == REQ_OP_READ && dio->should_dirty) { bio_check_pages_dirty(bio); /* transfers ownership */ err = bio->bi_error; } else { bio_for_each_segment_all(bvec, bio, i) { struct page *page = bvec->bv_page; - if (dio->rw == READ && !PageCompound(page) && + if (dio->op == REQ_OP_READ && !PageCompound(page) && dio->should_dirty) set_page_dirty_lock(page); page_cache_release(page); @@ -632,7 +634,7 @@ static int get_more_blocks(struct dio *dio, struct dio_submit *sdio, * which may decide to handle it or also return an unmapped * buffer head. */ - create = dio->rw & WRITE; + create = dio->op == REQ_OP_WRITE; if (dio->flags & DIO_SKIP_HOLES) { if (sdio->block_in_file < (i_size_read(dio->inode) >> sdio->blkbits)) @@ -782,7 +784,7 @@ submit_page_section(struct dio *dio, struct dio_submit *sdio, struct page *page, { int ret = 0; - if (dio->rw & WRITE) { + if (dio->op == REQ_OP_WRITE) { /* * Read accounting is performed in submit_bio() */ @@ -982,7 +984,7 @@ do_holes: loff_t i_size_aligned; /* AKPM: eargh, -ENOTBLK is a hack */ - if (dio->rw & WRITE) { + if (dio->op == REQ_OP_WRITE) { page_cache_release(page); return -ENOTBLK; } @@ -1195,7 +1197,12 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, dio->is_async = true; dio->inode = inode; - dio->rw = iov_iter_rw(iter) == WRITE ? WRITE_ODIRECT : READ; + if (iov_iter_rw(iter) == WRITE) { + dio->op = REQ_OP_WRITE; + dio->op_flags = WRITE_ODIRECT; + } else { + dio->op = REQ_OP_READ; + } /* * For AIO O_(D)SYNC writes we need to defer completions to a workqueue diff --git a/include/linux/fs.h b/include/linux/fs.h index afca758..204ea4c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2732,7 +2732,7 @@ extern int generic_file_open(struct inode * inode, struct file * filp); extern int nonseekable_open(struct inode * inode, struct file * filp); #ifdef CONFIG_BLOCK -typedef void (dio_submit_t)(int rw, struct bio *bio, struct inode *inode, +typedef void (dio_submit_t)(struct bio *bio, struct inode *inode, loff_t file_offset); enum {