From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5041BC433DB for ; Sun, 24 Jan 2021 10:06:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1B490225A9 for ; Sun, 24 Jan 2021 10:06:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726716AbhAXKGE (ORCPT ); Sun, 24 Jan 2021 05:06:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47570 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726482AbhAXKF4 (ORCPT ); Sun, 24 Jan 2021 05:05:56 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C035C061573; Sun, 24 Jan 2021 02:05:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:In-Reply-To:References; bh=TvDyKhz7ulAHBtG2FFhYq5BP/15LHCtoLOOoolMNz4I=; b=HUFYKHB/XNVoXfOKSNWlp2Lk3P 6hG277ofN9oRneNTdG82/P4N5jHzEIWZw7Y2yNc4U0YFmhPtxEOVss/hE6ZMuhO6iEOl1uoBQUvyC SfKUg/qgyzHD96TJxq1ozjRxYqeA6RHXmgARaWeOEUpIpYiqnOTer+DfUk5FwNEhqdakStkWj0Yj2 nucorlBDow281qe8G+B36Gd7ZYjURUT4eCjnucXc0AJKnnnNYnmcyMT+IBldK1pkOZcZ4tAdg7Odz opTS3zlVtyn7N8CI3iMBx6Uhyx0o7LevaBBcA79j6jcvyA54K8Wpihxc2vBvRZ94HqKW7Zqw/R5X1 kx9BpSKg==; Received: from 089144206130.atnat0015.highway.bob.at ([89.144.206.130] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1l3cGJ-002q3S-S7; Sun, 24 Jan 2021 10:04:55 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Tejun Heo , Coly Li , Song Liu , dm-devel@redhat.com, linux-bcache@vger.kernel.org, linux-raid@vger.kernel.org, linux-s390@vger.kernel.org, linux-block@vger.kernel.org Subject: store a pointer to the block_device in struct bio (again) v2 Date: Sun, 24 Jan 2021 11:02:31 +0100 Message-Id: <20210124100241.1167849-1-hch@lst.de> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-bcache@vger.kernel.org Hi Jens, this series switches back from storing the gendisk + partno to storing a block_device pointer in struct bio. The reason is two fold: for one the new struct block_device actually is always available, removing the need to avoid originally. Second the merge struct block_device is much more useful than the old one, as storing it avoids the need for looking up what used to be hd_struct during partition remapping and I/O accounting. Note that this series depends on the posted but not merged "split hard read-only vs read-only policy" series. A git tree is also available: git://git.infradead.org/users/hch/block.git bi_bdev Gitweb: http://git.infradead.org/users/hch/block.git/shortlog/refs/heads/bi_bdev Changes since v1: - protect against double remapping I/O to partitions Diffstat: arch/m68k/emu/nfblock.c | 2 arch/xtensa/platforms/iss/simdisk.c | 2 block/bio-integrity.c | 18 +- block/bio.c | 31 +--- block/blk-cgroup.c | 7 block/blk-core.c | 100 ++++++------- block/blk-crypto-fallback.c | 2 block/blk-crypto.c | 2 block/blk-merge.c | 17 +- block/blk-mq.c | 2 block/blk-settings.c | 2 block/blk-throttle.c | 2 block/blk.h | 5 block/bounce.c | 2 block/genhd.c | 271 ++++-------------------------------- block/partitions/core.c | 31 ---- drivers/block/brd.c | 8 - drivers/block/drbd/drbd_int.h | 4 drivers/block/drbd/drbd_req.c | 2 drivers/block/null_blk/main.c | 2 drivers/block/pktcdvd.c | 4 drivers/block/ps3vram.c | 2 drivers/block/rsxx/dev.c | 2 drivers/block/umem.c | 2 drivers/block/zram/zram_drv.c | 2 drivers/lightnvm/pblk-init.c | 2 drivers/md/bcache/debug.c | 2 drivers/md/bcache/request.c | 39 +++-- drivers/md/dm-bio-record.h | 9 - drivers/md/dm-raid1.c | 10 - drivers/md/dm.c | 14 - drivers/md/md-linear.c | 2 drivers/md/md.c | 10 - drivers/md/md.h | 6 drivers/md/raid1.c | 6 drivers/md/raid10.c | 12 - drivers/md/raid5.c | 2 drivers/nvdimm/blk.c | 4 drivers/nvdimm/btt.c | 4 drivers/nvdimm/pmem.c | 4 drivers/nvme/host/core.c | 6 drivers/nvme/host/lightnvm.c | 3 drivers/nvme/host/multipath.c | 6 drivers/nvme/host/rdma.c | 2 drivers/s390/block/dasd.c | 26 --- drivers/s390/block/dcssblk.c | 6 drivers/s390/block/xpram.c | 2 fs/btrfs/check-integrity.c | 10 - fs/btrfs/raid56.c | 7 fs/btrfs/scrub.c | 2 fs/direct-io.c | 2 fs/f2fs/data.c | 12 - include/linux/bio.h | 20 +- include/linux/blk-mq.h | 4 include/linux/blk_types.h | 4 include/linux/blkdev.h | 20 -- include/linux/genhd.h | 21 -- kernel/trace/blktrace.c | 16 +- mm/page_io.c | 2 59 files changed, 260 insertions(+), 561 deletions(-)