From patchwork Sun Jan 24 10:02:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12042195 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_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 2B68DC433DB for ; Sun, 24 Jan 2021 10:07:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F0165225A9 for ; Sun, 24 Jan 2021 10:07:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726733AbhAXKGL (ORCPT ); Sun, 24 Jan 2021 05:06:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47618 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726482AbhAXKGJ (ORCPT ); Sun, 24 Jan 2021 05:06:09 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F0363C061574; Sun, 24 Jan 2021 02:05:28 -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: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=n2FZZN/iZm8LkwwLhaIyNJDcvAI4swAjjubRXsJSSw4=; b=iceyPcvqE+sR6/qCgeNY/bf/gz eG0a62Zz5YkiqIRfNnlqDcWvkc6nlQuWboPHrV+wIRuCYtaSu1QC3J4LmlB1nZrD5ksyCq4LKdbP7 FdAG2vSUk3oGDisDCLjOP1OSjloCuFKxn9lxzrPrKd8m7OFO2fUjNJ9cAxTi/U2YkkPcd9Ct2OJKg 0KD1wWIT4zwVkxd7I9PQ0+gAkqRvt4+GhNrYMaNVXtGx27dtjej4m9GUio4OsJWXWDmFZ+es+zruJ sbJnrmXfqt71VXvP06eLA4fsrlq9pDVd9ORrpelhsIhcz6AUNBb7BW6khQTxFzk8G5LXwJwMSHBDD X0za6teg==; Received: from [2001:4bb8:188:1954:a3b3:627f:702b:2136] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1l3cGU-002q7U-2G; Sun, 24 Jan 2021 10:05:04 +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: [PATCH 01/10] brd: remove the end of device check in brd_do_bvec Date: Sun, 24 Jan 2021 11:02:32 +0100 Message-Id: <20210124100241.1167849-2-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210124100241.1167849-1-hch@lst.de> References: <20210124100241.1167849-1-hch@lst.de> MIME-Version: 1.0 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-block@vger.kernel.org The block layer already checks for this conditions in bio_check_eod before calling the driver. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo Reviewed-by: Johannes Thumshirn --- drivers/block/brd.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/block/brd.c b/drivers/block/brd.c index c43a6ab4b1f39f..c7c8214190795c 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -285,14 +285,10 @@ static int brd_do_bvec(struct brd_device *brd, struct page *page, static blk_qc_t brd_submit_bio(struct bio *bio) { struct brd_device *brd = bio->bi_disk->private_data; + sector_t sector = bio->bi_iter.bi_sector; struct bio_vec bvec; - sector_t sector; struct bvec_iter iter; - sector = bio->bi_iter.bi_sector; - if (bio_end_sector(bio) > get_capacity(bio->bi_disk)) - goto io_error; - bio_for_each_segment(bvec, bio, iter) { unsigned int len = bvec.bv_len; int err; From patchwork Sun Jan 24 10:02:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12042197 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_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 6880DC433E6 for ; Sun, 24 Jan 2021 10:07:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 363C6225A9 for ; Sun, 24 Jan 2021 10:07:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726731AbhAXKGT (ORCPT ); Sun, 24 Jan 2021 05:06:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726739AbhAXKGR (ORCPT ); Sun, 24 Jan 2021 05:06:17 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 68779C06174A; Sun, 24 Jan 2021 02:05:37 -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: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=K6diAuI1dykKiPdXMiX1y5sNzP8n09/HziOZ9JOHixw=; b=HAB7DU15HlXBk7fo4pm48eAnnz y3wRNIuPlc+uEmBp3NuG0/4Q/71LYmoelCczGo35ecJTUghzhrxKV7xqTNkdxYhXmJkIx3OsJeLGq HCBVcZl3uCkltVbHMCmNLAc0kOD98ymy61AGyCAG7JEvKJBOhfy+I2wTZNiW3TX27FAZa/DA1atYn zfJKLIm0nnkVeMi/GHo0vD7xjQlBViMwlNR2ZeQr9FLAR7sPWXd9Cxgt3+u4UYbWygazIXbZ1uoxL ZgqpuTt+UDnH6qNK95eTlqfkeSt7KOPj7nqmvJbDDsn9bQmLYdAec9ZWMTOagQBAIPI46RmjzFFKi ERsd1Vmg==; Received: from [2001:4bb8:188:1954:a3b3:627f:702b:2136] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1l3cGh-002q98-LP; Sun, 24 Jan 2021 10:05:26 +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: [PATCH 02/10] dcssblk: remove the end of device check in dcssblk_submit_bio Date: Sun, 24 Jan 2021 11:02:33 +0100 Message-Id: <20210124100241.1167849-3-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210124100241.1167849-1-hch@lst.de> References: <20210124100241.1167849-1-hch@lst.de> MIME-Version: 1.0 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-block@vger.kernel.org The block layer already checks for this conditions in bio_check_eod before calling the driver. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo Reviewed-by: Johannes Thumshirn --- drivers/s390/block/dcssblk.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 299e77ec2c4163..5c5cff3f237452 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -886,10 +886,6 @@ dcssblk_submit_bio(struct bio *bio) (bio->bi_iter.bi_size & 4095) != 0) /* Request is not page-aligned. */ goto fail; - if (bio_end_sector(bio) > get_capacity(bio->bi_disk)) { - /* Request beyond end of DCSS segment. */ - goto fail; - } /* verify data transfer direction */ if (dev_info->is_shared) { switch (dev_info->segment_type) { From patchwork Sun Jan 24 10:02:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12042201 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_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 8CE7FC433E9 for ; Sun, 24 Jan 2021 10:07:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5601522AAA for ; Sun, 24 Jan 2021 10:07:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726779AbhAXKGq (ORCPT ); Sun, 24 Jan 2021 05:06:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726757AbhAXKGS (ORCPT ); Sun, 24 Jan 2021 05:06:18 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0F223C061756; Sun, 24 Jan 2021 02:05:38 -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: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=XCxfIT7qTn5T/iVGL210jWjc1DxwJQHJ40wG8+3eTXs=; b=MzZJ3MTmxcb0+ifa5ArXzt+/JO s6R9FXv8kCgcSzoR43hzGNFOov4G60YBmSGyML7HJdvH6/HWXUMiytCaRXlcEHgnEWhDvVrDJhEVM w2gskpwbp3GEb4LrOA2wbxud1zK6Zi8VN7IJVNU3pV85a0dHNsCAfxRNy8NWB1GxtftH/4uKbdGKZ /Tuc1cZvlESE0P9V5afbmUGd7DLGvPTRIrCjsKhn4HlFmUefm2/yott/TDMRG1TIV1zJvQjshhL3S RnYlDWRwEZbSylk+ZCS1fWbbzv4QVjtt5aiiPx2CaJ0EmEtiHES5AR1UvH3iWcME+ZNo8hQMjq0WH c3XwB7+A==; Received: from [2001:4bb8:188:1954:a3b3:627f:702b:2136] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1l3cGw-002q9W-2f; Sun, 24 Jan 2021 10:05:32 +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: [PATCH 03/10] block: store a block_device pointer in struct bio Date: Sun, 24 Jan 2021 11:02:34 +0100 Message-Id: <20210124100241.1167849-4-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210124100241.1167849-1-hch@lst.de> References: <20210124100241.1167849-1-hch@lst.de> MIME-Version: 1.0 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-block@vger.kernel.org Replace the gendisk pointer in struct bio with a pointer to the newly improved struct block device. From that the gendisk can be trivially accessed with an extra indirection, but it also allows to directly look up all information related to partition remapping. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo --- 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 | 37 +++++++++++++---------------- block/blk-crypto-fallback.c | 2 +- block/blk-crypto.c | 2 +- block/blk-merge.c | 17 +++++++------ block/blk-mq.c | 2 +- block/blk-throttle.c | 2 +- block/blk.h | 2 -- block/bounce.c | 2 +- block/genhd.c | 2 +- drivers/block/brd.c | 2 +- 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 | 7 +++--- 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 | 2 +- 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/dcssblk.c | 2 +- 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 | 18 +++++++------- include/linux/blk-mq.h | 4 ++-- include/linux/blk_types.h | 3 +-- include/linux/blkdev.h | 5 ++-- kernel/trace/blktrace.c | 16 +++++++------ mm/page_io.c | 2 +- 55 files changed, 154 insertions(+), 184 deletions(-) diff --git a/arch/m68k/emu/nfblock.c b/arch/m68k/emu/nfblock.c index 92d26c81244134..ba808543161a02 100644 --- a/arch/m68k/emu/nfblock.c +++ b/arch/m68k/emu/nfblock.c @@ -61,7 +61,7 @@ struct nfhd_device { static blk_qc_t nfhd_submit_bio(struct bio *bio) { - struct nfhd_device *dev = bio->bi_disk->private_data; + struct nfhd_device *dev = bio->bi_bdev->bd_disk->private_data; struct bio_vec bvec; struct bvec_iter iter; int dir, len, shift; diff --git a/arch/xtensa/platforms/iss/simdisk.c b/arch/xtensa/platforms/iss/simdisk.c index 3447556d276d32..fc09be7b13479c 100644 --- a/arch/xtensa/platforms/iss/simdisk.c +++ b/arch/xtensa/platforms/iss/simdisk.c @@ -103,7 +103,7 @@ static void simdisk_transfer(struct simdisk *dev, unsigned long sector, static blk_qc_t simdisk_submit_bio(struct bio *bio) { - struct simdisk *dev = bio->bi_disk->private_data; + struct simdisk *dev = bio->bi_bdev->bd_disk->private_data; struct bio_vec bvec; struct bvec_iter iter; sector_t sector = bio->bi_iter.bi_sector; diff --git a/block/bio-integrity.c b/block/bio-integrity.c index 9ffd7e28955476..c3e5abcfdc98c3 100644 --- a/block/bio-integrity.c +++ b/block/bio-integrity.c @@ -140,7 +140,7 @@ int bio_integrity_add_page(struct bio *bio, struct page *page, iv = bip->bip_vec + bip->bip_vcnt; if (bip->bip_vcnt && - bvec_gap_to_prev(bio->bi_disk->queue, + bvec_gap_to_prev(bio->bi_bdev->bd_disk->queue, &bip->bip_vec[bip->bip_vcnt - 1], offset)) return 0; @@ -162,7 +162,7 @@ EXPORT_SYMBOL(bio_integrity_add_page); static blk_status_t bio_integrity_process(struct bio *bio, struct bvec_iter *proc_iter, integrity_processing_fn *proc_fn) { - struct blk_integrity *bi = blk_get_integrity(bio->bi_disk); + struct blk_integrity *bi = blk_get_integrity(bio->bi_bdev->bd_disk); struct blk_integrity_iter iter; struct bvec_iter bviter; struct bio_vec bv; @@ -171,7 +171,7 @@ static blk_status_t bio_integrity_process(struct bio *bio, void *prot_buf = page_address(bip->bip_vec->bv_page) + bip->bip_vec->bv_offset; - iter.disk_name = bio->bi_disk->disk_name; + iter.disk_name = bio->bi_bdev->bd_disk->disk_name; iter.interval = 1 << bi->interval_exp; iter.seed = proc_iter->bi_sector; iter.prot_buf = prot_buf; @@ -208,8 +208,8 @@ static blk_status_t bio_integrity_process(struct bio *bio, bool bio_integrity_prep(struct bio *bio) { struct bio_integrity_payload *bip; - struct blk_integrity *bi = blk_get_integrity(bio->bi_disk); - struct request_queue *q = bio->bi_disk->queue; + struct blk_integrity *bi = blk_get_integrity(bio->bi_bdev->bd_disk); + struct request_queue *q = bio->bi_bdev->bd_disk->queue; void *buf; unsigned long start, end; unsigned int len, nr_pages; @@ -329,7 +329,7 @@ static void bio_integrity_verify_fn(struct work_struct *work) struct bio_integrity_payload *bip = container_of(work, struct bio_integrity_payload, bip_work); struct bio *bio = bip->bip_bio; - struct blk_integrity *bi = blk_get_integrity(bio->bi_disk); + struct blk_integrity *bi = blk_get_integrity(bio->bi_bdev->bd_disk); /* * At the moment verify is called bio's iterator was advanced @@ -355,7 +355,7 @@ static void bio_integrity_verify_fn(struct work_struct *work) */ bool __bio_integrity_endio(struct bio *bio) { - struct blk_integrity *bi = blk_get_integrity(bio->bi_disk); + struct blk_integrity *bi = blk_get_integrity(bio->bi_bdev->bd_disk); struct bio_integrity_payload *bip = bio_integrity(bio); if (bio_op(bio) == REQ_OP_READ && !bio->bi_status && @@ -381,7 +381,7 @@ bool __bio_integrity_endio(struct bio *bio) void bio_integrity_advance(struct bio *bio, unsigned int bytes_done) { struct bio_integrity_payload *bip = bio_integrity(bio); - struct blk_integrity *bi = blk_get_integrity(bio->bi_disk); + struct blk_integrity *bi = blk_get_integrity(bio->bi_bdev->bd_disk); unsigned bytes = bio_integrity_bytes(bi, bytes_done >> 9); bip->bip_iter.bi_sector += bytes_done >> 9; @@ -397,7 +397,7 @@ void bio_integrity_advance(struct bio *bio, unsigned int bytes_done) void bio_integrity_trim(struct bio *bio) { struct bio_integrity_payload *bip = bio_integrity(bio); - struct blk_integrity *bi = blk_get_integrity(bio->bi_disk); + struct blk_integrity *bi = blk_get_integrity(bio->bi_bdev->bd_disk); bip->bip_iter.bi_size = bio_integrity_bytes(bi, bio_sectors(bio)); } diff --git a/block/bio.c b/block/bio.c index 1f2cc1fbe283a1..0b70ade17da637 100644 --- a/block/bio.c +++ b/block/bio.c @@ -607,16 +607,7 @@ void bio_truncate(struct bio *bio, unsigned new_size) */ void guard_bio_eod(struct bio *bio) { - sector_t maxsector; - struct block_device *part; - - rcu_read_lock(); - part = __disk_get_part(bio->bi_disk, bio->bi_partno); - if (part) - maxsector = bdev_nr_sectors(part); - else - maxsector = get_capacity(bio->bi_disk); - rcu_read_unlock(); + sector_t maxsector = bdev_nr_sectors(bio->bi_bdev); if (!maxsector) return; @@ -676,11 +667,10 @@ void __bio_clone_fast(struct bio *bio, struct bio *bio_src) BUG_ON(bio->bi_pool && BVEC_POOL_IDX(bio)); /* - * most users will be overriding ->bi_disk with a new target, + * most users will be overriding ->bi_bdev with a new target, * so we don't set nor calculate new physical/hw segment counts here */ - bio->bi_disk = bio_src->bi_disk; - bio->bi_partno = bio_src->bi_partno; + bio->bi_bdev = bio_src->bi_bdev; bio_set_flag(bio, BIO_CLONED); if (bio_flagged(bio_src, BIO_THROTTLED)) bio_set_flag(bio, BIO_THROTTLED); @@ -730,7 +720,7 @@ EXPORT_SYMBOL(bio_clone_fast); const char *bio_devname(struct bio *bio, char *buf) { - return disk_name(bio->bi_disk, bio->bi_partno, buf); + return bdevname(bio->bi_bdev, buf); } EXPORT_SYMBOL(bio_devname); @@ -1037,7 +1027,7 @@ static int __bio_iov_append_get_pages(struct bio *bio, struct iov_iter *iter) { unsigned short nr_pages = bio->bi_max_vecs - bio->bi_vcnt; unsigned short entries_left = bio->bi_max_vecs - bio->bi_vcnt; - struct request_queue *q = bio->bi_disk->queue; + struct request_queue *q = bio->bi_bdev->bd_disk->queue; unsigned int max_append_sectors = queue_max_zone_append_sectors(q); struct bio_vec *bv = bio->bi_io_vec + bio->bi_vcnt; struct page **pages = (struct page **)bv; @@ -1145,7 +1135,8 @@ static void submit_bio_wait_endio(struct bio *bio) */ int submit_bio_wait(struct bio *bio) { - DECLARE_COMPLETION_ONSTACK_MAP(done, bio->bi_disk->lockdep_map); + DECLARE_COMPLETION_ONSTACK_MAP(done, + bio->bi_bdev->bd_disk->lockdep_map); unsigned long hang_check; bio->bi_private = &done; @@ -1422,8 +1413,8 @@ void bio_endio(struct bio *bio) if (!bio_integrity_endio(bio)) return; - if (bio->bi_disk) - rq_qos_done_bio(bio->bi_disk->queue, bio); + if (bio->bi_bdev) + rq_qos_done_bio(bio->bi_bdev->bd_disk->queue, bio); /* * Need to have a real endio function for chained bios, otherwise @@ -1438,8 +1429,8 @@ void bio_endio(struct bio *bio) goto again; } - if (bio->bi_disk && bio_flagged(bio, BIO_TRACE_COMPLETION)) { - trace_block_bio_complete(bio->bi_disk->queue, bio); + if (bio->bi_bdev && bio_flagged(bio, BIO_TRACE_COMPLETION)) { + trace_block_bio_complete(bio->bi_bdev->bd_disk->queue, bio); bio_clear_flag(bio, BIO_TRACE_COMPLETION); } diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 031114d454a604..3465d6ee708edf 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1800,7 +1800,8 @@ static inline struct blkcg_gq *blkg_tryget_closest(struct bio *bio, struct blkcg_gq *blkg, *ret_blkg = NULL; rcu_read_lock(); - blkg = blkg_lookup_create(css_to_blkcg(css), bio->bi_disk->queue); + blkg = blkg_lookup_create(css_to_blkcg(css), + bio->bi_bdev->bd_disk->queue); while (blkg) { if (blkg_tryget(blkg)) { ret_blkg = blkg; @@ -1836,8 +1837,8 @@ void bio_associate_blkg_from_css(struct bio *bio, if (css && css->parent) { bio->bi_blkg = blkg_tryget_closest(bio, css); } else { - blkg_get(bio->bi_disk->queue->root_blkg); - bio->bi_blkg = bio->bi_disk->queue->root_blkg; + blkg_get(bio->bi_bdev->bd_disk->queue->root_blkg); + bio->bi_blkg = bio->bi_bdev->bd_disk->queue->root_blkg; } } EXPORT_SYMBOL_GPL(bio_associate_blkg_from_css); diff --git a/block/blk-core.c b/block/blk-core.c index 08ff8ca325296e..a3a54cd86c9c00 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -476,7 +476,7 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags) static inline int bio_queue_enter(struct bio *bio) { - struct request_queue *q = bio->bi_disk->queue; + struct request_queue *q = bio->bi_bdev->bd_disk->queue; bool nowait = bio->bi_opf & REQ_NOWAIT; int ret; @@ -712,7 +712,7 @@ static inline bool bio_check_ro(struct bio *bio, struct block_device *part) static noinline int should_fail_bio(struct bio *bio) { - if (should_fail_request(bio->bi_disk->part0, bio->bi_iter.bi_size)) + if (should_fail_request(bdev_whole(bio->bi_bdev), bio->bi_iter.bi_size)) return -EIO; return 0; } @@ -741,13 +741,9 @@ static inline int bio_check_eod(struct bio *bio, sector_t maxsector) */ static inline int blk_partition_remap(struct bio *bio) { - struct block_device *p; + struct block_device *p = bio->bi_bdev; int ret = -EIO; - rcu_read_lock(); - p = __disk_get_part(bio->bi_disk, bio->bi_partno); - if (unlikely(!p)) - goto out; if (unlikely(should_fail_request(p, bio->bi_iter.bi_size))) goto out; if (unlikely(bio_check_ro(bio, p))) @@ -761,10 +757,9 @@ static inline int blk_partition_remap(struct bio *bio) bio->bi_iter.bi_sector - p->bd_start_sect); } - bio->bi_partno = 0; + bio->bi_bdev = bdev_whole(p); ret = 0; out: - rcu_read_unlock(); return ret; } @@ -805,7 +800,8 @@ static inline blk_status_t blk_check_zone_append(struct request_queue *q, static noinline_for_stack bool submit_bio_checks(struct bio *bio) { - struct request_queue *q = bio->bi_disk->queue; + struct block_device *bdev = bio->bi_bdev; + struct request_queue *q = bdev->bd_disk->queue; blk_status_t status = BLK_STS_IOERR; struct blk_plug *plug; @@ -825,13 +821,13 @@ static noinline_for_stack bool submit_bio_checks(struct bio *bio) if (should_fail_bio(bio)) goto end_io; - if (bio->bi_partno) { + if (bio->bi_bdev->bd_partno) { if (unlikely(blk_partition_remap(bio))) goto end_io; } else { - if (unlikely(bio_check_ro(bio, bio->bi_disk->part0))) + if (unlikely(bio_check_ro(bio, bdev_whole(bdev)))) goto end_io; - if (unlikely(bio_check_eod(bio, get_capacity(bio->bi_disk)))) + if (unlikely(bio_check_eod(bio, get_capacity(bdev->bd_disk)))) goto end_io; } @@ -924,7 +920,7 @@ static noinline_for_stack bool submit_bio_checks(struct bio *bio) static blk_qc_t __submit_bio(struct bio *bio) { - struct gendisk *disk = bio->bi_disk; + struct gendisk *disk = bio->bi_bdev->bd_disk; blk_qc_t ret = BLK_QC_T_NONE; if (blk_crypto_bio_prep(&bio)) { @@ -966,7 +962,7 @@ static blk_qc_t __submit_bio_noacct(struct bio *bio) current->bio_list = bio_list_on_stack; do { - struct request_queue *q = bio->bi_disk->queue; + struct request_queue *q = bio->bi_bdev->bd_disk->queue; struct bio_list lower, same; if (unlikely(bio_queue_enter(bio) != 0)) @@ -987,7 +983,7 @@ static blk_qc_t __submit_bio_noacct(struct bio *bio) bio_list_init(&lower); bio_list_init(&same); while ((bio = bio_list_pop(&bio_list_on_stack[0])) != NULL) - if (q == bio->bi_disk->queue) + if (q == bio->bi_bdev->bd_disk->queue) bio_list_add(&same, bio); else bio_list_add(&lower, bio); @@ -1012,7 +1008,7 @@ static blk_qc_t __submit_bio_noacct_mq(struct bio *bio) current->bio_list = bio_list; do { - struct gendisk *disk = bio->bi_disk; + struct gendisk *disk = bio->bi_bdev->bd_disk; if (unlikely(bio_queue_enter(bio) != 0)) continue; @@ -1055,7 +1051,7 @@ blk_qc_t submit_bio_noacct(struct bio *bio) return BLK_QC_T_NONE; } - if (!bio->bi_disk->fops->submit_bio) + if (!bio->bi_bdev->bd_disk->fops->submit_bio) return __submit_bio_noacct_mq(bio); return __submit_bio_noacct(bio); } @@ -1067,7 +1063,7 @@ EXPORT_SYMBOL(submit_bio_noacct); * * submit_bio() is used to submit I/O requests to block devices. It is passed a * fully set up &struct bio that describes the I/O that needs to be done. The - * bio will be send to the device described by the bi_disk and bi_partno fields. + * bio will be send to the device described by the bi_bdev field. * * The success/failure status of the request, along with notification of * completion, is delivered asynchronously through the ->bi_end_io() callback @@ -1087,7 +1083,8 @@ blk_qc_t submit_bio(struct bio *bio) unsigned int count; if (unlikely(bio_op(bio) == REQ_OP_WRITE_SAME)) - count = queue_logical_block_size(bio->bi_disk->queue) >> 9; + count = queue_logical_block_size( + bio->bi_bdev->bd_disk->queue) >> 9; else count = bio_sectors(bio); diff --git a/block/blk-crypto-fallback.c b/block/blk-crypto-fallback.c index c162b754efbd6a..8f1e1817673115 100644 --- a/block/blk-crypto-fallback.c +++ b/block/blk-crypto-fallback.c @@ -167,7 +167,7 @@ static struct bio *blk_crypto_clone_bio(struct bio *bio_src) bio = bio_alloc_bioset(GFP_NOIO, bio_segments(bio_src), NULL); if (!bio) return NULL; - bio->bi_disk = bio_src->bi_disk; + bio->bi_bdev = bio_src->bi_bdev; bio->bi_opf = bio_src->bi_opf; bio->bi_ioprio = bio_src->bi_ioprio; bio->bi_write_hint = bio_src->bi_write_hint; diff --git a/block/blk-crypto.c b/block/blk-crypto.c index 5da43f0973b46b..09fcb18fa778fa 100644 --- a/block/blk-crypto.c +++ b/block/blk-crypto.c @@ -280,7 +280,7 @@ bool __blk_crypto_bio_prep(struct bio **bio_ptr) * Success if device supports the encryption context, or if we succeeded * in falling back to the crypto API. */ - if (blk_ksm_crypto_cfg_supported(bio->bi_disk->queue->ksm, + if (blk_ksm_crypto_cfg_supported(bio->bi_bdev->bd_disk->queue->ksm, &bc_key->crypto_cfg)) return true; diff --git a/block/blk-merge.c b/block/blk-merge.c index 808768f6b174cc..ffb4aa0ea68b09 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -298,14 +298,13 @@ static struct bio *blk_bio_segment_split(struct request_queue *q, * Split a bio into two bios, chain the two bios, submit the second half and * store a pointer to the first half in *@bio. If the second bio is still too * big it will be split by a recursive call to this function. Since this - * function may allocate a new bio from @bio->bi_disk->queue->bio_split, it is - * the responsibility of the caller to ensure that - * @bio->bi_disk->queue->bio_split is only released after processing of the - * split bio has finished. + * function may allocate a new bio from q->bio_split, it is the responsibility + * of the caller to ensure that q->bio_split is only released after processing + * of the split bio has finished. */ void __blk_queue_split(struct bio **bio, unsigned int *nr_segs) { - struct request_queue *q = (*bio)->bi_disk->queue; + struct request_queue *q = (*bio)->bi_bdev->bd_disk->queue; struct bio *split = NULL; switch (bio_op(*bio)) { @@ -358,9 +357,9 @@ void __blk_queue_split(struct bio **bio, unsigned int *nr_segs) * * Split a bio into two bios, chains the two bios, submit the second half and * store a pointer to the first half in *@bio. Since this function may allocate - * a new bio from @bio->bi_disk->queue->bio_split, it is the responsibility of - * the caller to ensure that @bio->bi_disk->queue->bio_split is only released - * after processing of the split bio has finished. + * a new bio from q->bio_split, it is the responsibility of the caller to ensure + * that q->bio_split is only released after processing of the split bio has + * finished. */ void blk_queue_split(struct bio **bio) { @@ -866,7 +865,7 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio) return false; /* must be same device */ - if (rq->rq_disk != bio->bi_disk) + if (rq->rq_disk != bio->bi_bdev->bd_disk) return false; /* only merge integrity protected bio into ditto rq */ diff --git a/block/blk-mq.c b/block/blk-mq.c index f285a9123a8b08..74b17b396f4c54 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2128,7 +2128,7 @@ static void blk_add_rq_to_plug(struct blk_plug *plug, struct request *rq) */ blk_qc_t blk_mq_submit_bio(struct bio *bio) { - struct request_queue *q = bio->bi_disk->queue; + struct request_queue *q = bio->bi_bdev->bd_disk->queue; const int is_sync = op_is_sync(bio->bi_opf); const int is_flush_fua = op_is_flush(bio->bi_opf); struct blk_mq_alloc_data data = { diff --git a/block/blk-throttle.c b/block/blk-throttle.c index d52cac9f3a7c23..b1b22d863bdf89 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -2178,7 +2178,7 @@ static inline void throtl_update_latency_buckets(struct throtl_data *td) bool blk_throtl_bio(struct bio *bio) { - struct request_queue *q = bio->bi_disk->queue; + struct request_queue *q = bio->bi_bdev->bd_disk->queue; struct blkcg_gq *blkg = bio->bi_blkg; struct throtl_qnode *qn = NULL; struct throtl_grp *tg = blkg_to_tg(blkg); diff --git a/block/blk.h b/block/blk.h index 7550364c326c36..10ab7c0d0766f0 100644 --- a/block/blk.h +++ b/block/blk.h @@ -202,8 +202,6 @@ static inline void elevator_exit(struct request_queue *q, __elevator_exit(q, e); } -struct block_device *__disk_get_part(struct gendisk *disk, int partno); - ssize_t part_size_show(struct device *dev, struct device_attribute *attr, char *buf); ssize_t part_stat_show(struct device *dev, struct device_attribute *attr, diff --git a/block/bounce.c b/block/bounce.c index d3f51acd6e3b51..a22a8a1942b24f 100644 --- a/block/bounce.c +++ b/block/bounce.c @@ -246,7 +246,7 @@ static struct bio *bounce_clone_bio(struct bio *bio_src, gfp_t gfp_mask, bio = bio_alloc_bioset(gfp_mask, bio_segments(bio_src), bs); if (!bio) return NULL; - bio->bi_disk = bio_src->bi_disk; + bio->bi_bdev = bio_src->bi_bdev; bio->bi_opf = bio_src->bi_opf; bio->bi_ioprio = bio_src->bi_ioprio; bio->bi_write_hint = bio_src->bi_write_hint; diff --git a/block/genhd.c b/block/genhd.c index ca5d880af51274..e536d0b4bbae34 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -161,7 +161,7 @@ static void part_in_flight_rw(struct block_device *part, inflight[1] = 0; } -struct block_device *__disk_get_part(struct gendisk *disk, int partno) +static struct block_device *__disk_get_part(struct gendisk *disk, int partno) { struct disk_part_tbl *ptbl = rcu_dereference(disk->part_tbl); diff --git a/drivers/block/brd.c b/drivers/block/brd.c index c7c8214190795c..18bf9990666207 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -284,7 +284,7 @@ static int brd_do_bvec(struct brd_device *brd, struct page *page, static blk_qc_t brd_submit_bio(struct bio *bio) { - struct brd_device *brd = bio->bi_disk->private_data; + struct brd_device *brd = bio->bi_bdev->bd_disk->private_data; sector_t sector = bio->bi_iter.bi_sector; struct bio_vec bvec; struct bvec_iter iter; diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 8f879e5c2f6706..b2c93a29c251fd 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -1579,8 +1579,8 @@ static inline void drbd_submit_bio_noacct(struct drbd_device *device, int fault_type, struct bio *bio) { __release(local); - if (!bio->bi_disk) { - drbd_err(device, "drbd_submit_bio_noacct: bio->bi_disk == NULL\n"); + if (!bio->bi_bdev) { + drbd_err(device, "drbd_submit_bio_noacct: bio->bi_bdev == NULL\n"); bio->bi_status = BLK_STS_IOERR; bio_endio(bio); return; diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index 330f851cb8f0b0..ea0f31ab334361 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -1595,7 +1595,7 @@ void do_submit(struct work_struct *ws) blk_qc_t drbd_submit_bio(struct bio *bio) { - struct drbd_device *device = bio->bi_disk->private_data; + struct drbd_device *device = bio->bi_bdev->bd_disk->private_data; unsigned long start_jif; blk_queue_split(&bio); diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c index 5357c3a4a36fc3..d6c821d48090a3 100644 --- a/drivers/block/null_blk/main.c +++ b/drivers/block/null_blk/main.c @@ -1420,7 +1420,7 @@ static blk_qc_t null_submit_bio(struct bio *bio) { sector_t sector = bio->bi_iter.bi_sector; sector_t nr_sectors = bio_sectors(bio); - struct nullb *nullb = bio->bi_disk->private_data; + struct nullb *nullb = bio->bi_bdev->bd_disk->private_data; struct nullb_queue *nq = nullb_to_queue(nullb); struct nullb_cmd *cmd; diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index b8bb8ec7538d9b..658a0981cb5471 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -2374,7 +2374,7 @@ static blk_qc_t pkt_submit_bio(struct bio *bio) blk_queue_split(&bio); - pd = bio->bi_disk->queue->queuedata; + pd = bio->bi_bdev->bd_disk->queue->queuedata; if (!pd) { pr_err("%s incorrect request queue\n", bio_devname(bio, b)); goto end_io; @@ -2418,7 +2418,7 @@ static blk_qc_t pkt_submit_bio(struct bio *bio) split = bio; } - pkt_make_request_write(bio->bi_disk->queue, split); + pkt_make_request_write(bio->bi_bdev->bd_disk->queue, split); } while (split != bio); return BLK_QC_T_NONE; diff --git a/drivers/block/ps3vram.c b/drivers/block/ps3vram.c index b71d28372ef3c8..1d738999fb69a0 100644 --- a/drivers/block/ps3vram.c +++ b/drivers/block/ps3vram.c @@ -581,7 +581,7 @@ static struct bio *ps3vram_do_bio(struct ps3_system_bus_device *dev, static blk_qc_t ps3vram_submit_bio(struct bio *bio) { - struct ps3_system_bus_device *dev = bio->bi_disk->private_data; + struct ps3_system_bus_device *dev = bio->bi_bdev->bd_disk->private_data; struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); int busy; diff --git a/drivers/block/rsxx/dev.c b/drivers/block/rsxx/dev.c index edacefff6e355b..9a28322a8cd893 100644 --- a/drivers/block/rsxx/dev.c +++ b/drivers/block/rsxx/dev.c @@ -122,7 +122,7 @@ static void bio_dma_done_cb(struct rsxx_cardinfo *card, static blk_qc_t rsxx_submit_bio(struct bio *bio) { - struct rsxx_cardinfo *card = bio->bi_disk->private_data; + struct rsxx_cardinfo *card = bio->bi_bdev->bd_disk->private_data; struct rsxx_bio_meta *bio_meta; blk_status_t st = BLK_STS_IOERR; diff --git a/drivers/block/umem.c b/drivers/block/umem.c index 2b95d7b33b9186..982732dbe82e69 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -521,7 +521,7 @@ static int mm_check_plugged(struct cardinfo *card) static blk_qc_t mm_submit_bio(struct bio *bio) { - struct cardinfo *card = bio->bi_disk->private_data; + struct cardinfo *card = bio->bi_bdev->bd_disk->private_data; pr_debug("mm_make_request %llu %u\n", (unsigned long long)bio->bi_iter.bi_sector, diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index e2933cb7a82a33..d6243dbc53cc53 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1596,7 +1596,7 @@ static void __zram_make_request(struct zram *zram, struct bio *bio) */ static blk_qc_t zram_submit_bio(struct bio *bio) { - struct zram *zram = bio->bi_disk->private_data; + struct zram *zram = bio->bi_bdev->bd_disk->private_data; if (!valid_io_request(zram, bio->bi_iter.bi_sector, bio->bi_iter.bi_size)) { diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c index b6246f73895cf8..5924f09c217b62 100644 --- a/drivers/lightnvm/pblk-init.c +++ b/drivers/lightnvm/pblk-init.c @@ -49,7 +49,7 @@ struct bio_set pblk_bio_set; static blk_qc_t pblk_submit_bio(struct bio *bio) { - struct pblk *pblk = bio->bi_disk->queue->queuedata; + struct pblk *pblk = bio->bi_bdev->bd_disk->queue->queuedata; if (bio_op(bio) == REQ_OP_DISCARD) { pblk_discard(pblk, bio); diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c index b00fd08d696b5f..058dd80144281e 100644 --- a/drivers/md/bcache/debug.c +++ b/drivers/md/bcache/debug.c @@ -114,7 +114,7 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio) check = bio_kmalloc(GFP_NOIO, bio_segments(bio)); if (!check) return; - check->bi_disk = bio->bi_disk; + check->bi_bdev = bio->bi_bdev; check->bi_opf = REQ_OP_READ; check->bi_iter.bi_sector = bio->bi_iter.bi_sector; check->bi_iter.bi_size = bio->bi_iter.bi_size; diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index 85b1f2a9b72d68..dfc35d6d05ed1c 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -894,7 +894,8 @@ static int cached_dev_cache_miss(struct btree *b, struct search *s, !(bio->bi_opf & (REQ_META|REQ_PRIO)) && s->iop.c->gc_stats.in_use < CUTOFF_CACHE_READA) reada = min_t(sector_t, dc->readahead >> 9, - get_capacity(bio->bi_disk) - bio_end_sector(bio)); + get_capacity(bio->bi_bdev->bd_disk) - + bio_end_sector(bio)); s->insert_bio_sectors = min(sectors, bio_sectors(bio) + reada); @@ -1167,7 +1168,7 @@ static void quit_max_writeback_rate(struct cache_set *c, blk_qc_t cached_dev_submit_bio(struct bio *bio) { struct search *s; - struct bcache_device *d = bio->bi_disk->private_data; + struct bcache_device *d = bio->bi_bdev->bd_disk->private_data; struct cached_dev *dc = container_of(d, struct cached_dev, disk); int rw = bio_data_dir(bio); @@ -1274,7 +1275,7 @@ blk_qc_t flash_dev_submit_bio(struct bio *bio) { struct search *s; struct closure *cl; - struct bcache_device *d = bio->bi_disk->private_data; + struct bcache_device *d = bio->bi_bdev->bd_disk->private_data; if (unlikely(d->c && test_bit(CACHE_SET_IO_DISABLE, &d->c->flags))) { bio->bi_status = BLK_STS_IOERR; diff --git a/drivers/md/dm-bio-record.h b/drivers/md/dm-bio-record.h index 2ea0360108e1d4..a3b71350eec84e 100644 --- a/drivers/md/dm-bio-record.h +++ b/drivers/md/dm-bio-record.h @@ -18,8 +18,7 @@ */ struct dm_bio_details { - struct gendisk *bi_disk; - u8 bi_partno; + struct block_device *bi_bdev; int __bi_remaining; unsigned long bi_flags; struct bvec_iter bi_iter; @@ -31,8 +30,7 @@ struct dm_bio_details { static inline void dm_bio_record(struct dm_bio_details *bd, struct bio *bio) { - bd->bi_disk = bio->bi_disk; - bd->bi_partno = bio->bi_partno; + bd->bi_bdev = bio->bi_bdev; bd->bi_flags = bio->bi_flags; bd->bi_iter = bio->bi_iter; bd->__bi_remaining = atomic_read(&bio->__bi_remaining); @@ -44,8 +42,7 @@ static inline void dm_bio_record(struct dm_bio_details *bd, struct bio *bio) static inline void dm_bio_restore(struct dm_bio_details *bd, struct bio *bio) { - bio->bi_disk = bd->bi_disk; - bio->bi_partno = bd->bi_partno; + bio->bi_bdev = bd->bi_bdev; bio->bi_flags = bd->bi_flags; bio->bi_iter = bd->bi_iter; atomic_set(&bio->__bi_remaining, bd->__bi_remaining); diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index fa09bc4e4c54a1..b0a82f29a2e451 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -145,7 +145,7 @@ static void dispatch_bios(void *context, struct bio_list *bio_list) struct dm_raid1_bio_record { struct mirror *m; - /* if details->bi_disk == NULL, details were not saved */ + /* if details->bi_bdev == NULL, details were not saved */ struct dm_bio_details details; region_t write_region; }; @@ -1190,7 +1190,7 @@ static int mirror_map(struct dm_target *ti, struct bio *bio) struct dm_raid1_bio_record *bio_record = dm_per_bio_data(bio, sizeof(struct dm_raid1_bio_record)); - bio_record->details.bi_disk = NULL; + bio_record->details.bi_bdev = NULL; if (rw == WRITE) { /* Save region for mirror_end_io() handler */ @@ -1257,7 +1257,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio, goto out; if (unlikely(*error)) { - if (!bio_record->details.bi_disk) { + if (!bio_record->details.bi_bdev) { /* * There wasn't enough memory to record necessary * information for a retry or there was no other @@ -1282,7 +1282,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio, bd = &bio_record->details; dm_bio_restore(bd, bio); - bio_record->details.bi_disk = NULL; + bio_record->details.bi_bdev = NULL; bio->bi_status = 0; queue_bio(ms, bio, rw); @@ -1292,7 +1292,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio, } out: - bio_record->details.bi_disk = NULL; + bio_record->details.bi_bdev = NULL; return DM_ENDIO_DONE; } diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 7bac564f3faa6e..479ec5bea09e2e 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -977,16 +977,17 @@ static void clone_endio(struct bio *bio) struct mapped_device *md = tio->io->md; dm_endio_fn endio = tio->ti->type->end_io; struct bio *orig_bio = io->orig_bio; + struct request_queue *q = bio->bi_bdev->bd_disk->queue; if (unlikely(error == BLK_STS_TARGET)) { if (bio_op(bio) == REQ_OP_DISCARD && - !bio->bi_disk->queue->limits.max_discard_sectors) + !q->limits.max_discard_sectors) disable_discard(md); else if (bio_op(bio) == REQ_OP_WRITE_SAME && - !bio->bi_disk->queue->limits.max_write_same_sectors) + !q->limits.max_write_same_sectors) disable_write_same(md); else if (bio_op(bio) == REQ_OP_WRITE_ZEROES && - !bio->bi_disk->queue->limits.max_write_zeroes_sectors) + !q->limits.max_write_zeroes_sectors) disable_write_zeroes(md); } @@ -996,7 +997,7 @@ static void clone_endio(struct bio *bio) */ if (bio_op(orig_bio) == REQ_OP_ZONE_APPEND) { sector_t written_sector = bio->bi_iter.bi_sector; - struct request_queue *q = orig_bio->bi_disk->queue; + struct request_queue *q = orig_bio->bi_bdev->bd_disk->queue; u64 mask = (u64)blk_queue_zone_sectors(q) - 1; orig_bio->bi_iter.bi_sector += written_sector & mask; @@ -1422,8 +1423,7 @@ static int __send_empty_flush(struct clone_info *ci) */ bio_init(&flush_bio, NULL, 0); flush_bio.bi_opf = REQ_OP_WRITE | REQ_PREFLUSH | REQ_SYNC; - flush_bio.bi_disk = ci->io->md->disk; - bio_associate_blkg(&flush_bio); + bio_set_dev(&flush_bio, ci->io->md->disk->part0); ci->bio = &flush_bio; ci->sector_count = 0; @@ -1626,7 +1626,7 @@ static blk_qc_t __split_and_process_bio(struct mapped_device *md, static blk_qc_t dm_submit_bio(struct bio *bio) { - struct mapped_device *md = bio->bi_disk->private_data; + struct mapped_device *md = bio->bi_bdev->bd_disk->private_data; blk_qc_t ret = BLK_QC_T_NONE; int srcu_idx; struct dm_table *map; diff --git a/drivers/md/md-linear.c b/drivers/md/md-linear.c index 68cac7d1927823..63ed8329a98d01 100644 --- a/drivers/md/md-linear.c +++ b/drivers/md/md-linear.c @@ -252,7 +252,7 @@ static bool linear_make_request(struct mddev *mddev, struct bio *bio) start_sector + data_offset; if (unlikely((bio_op(bio) == REQ_OP_DISCARD) && - !blk_queue_discard(bio->bi_disk->queue))) { + !blk_queue_discard(bio->bi_bdev->bd_disk->queue))) { /* Just ignore it */ bio_endio(bio); } else { diff --git a/drivers/md/md.c b/drivers/md/md.c index ca409428b4fcb9..ade2b99c51d390 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -486,7 +486,7 @@ static void md_end_io(struct bio *bio) static blk_qc_t md_submit_bio(struct bio *bio) { const int rw = bio_data_dir(bio); - struct mddev *mddev = bio->bi_disk->private_data; + struct mddev *mddev = bio->bi_bdev->bd_disk->private_data; if (mddev == NULL || mddev->pers == NULL) { bio_io_error(bio); diff --git a/drivers/md/md.h b/drivers/md/md.h index 34070ab30a8ae2..f13290ccc1c248 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -556,7 +556,7 @@ static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sect static inline void md_sync_acct_bio(struct bio *bio, unsigned long nr_sectors) { - atomic_add(nr_sectors, &bio->bi_disk->sync_io); + md_sync_acct(bio->bi_bdev, nr_sectors); } struct md_personality @@ -793,14 +793,14 @@ static inline void mddev_clear_unsupported_flags(struct mddev *mddev, static inline void mddev_check_writesame(struct mddev *mddev, struct bio *bio) { if (bio_op(bio) == REQ_OP_WRITE_SAME && - !bio->bi_disk->queue->limits.max_write_same_sectors) + !bio->bi_bdev->bd_disk->queue->limits.max_write_same_sectors) mddev->queue->limits.max_write_same_sectors = 0; } static inline void mddev_check_write_zeroes(struct mddev *mddev, struct bio *bio) { if (bio_op(bio) == REQ_OP_WRITE_ZEROES && - !bio->bi_disk->queue->limits.max_write_zeroes_sectors) + !bio->bi_bdev->bd_disk->queue->limits.max_write_zeroes_sectors) mddev->queue->limits.max_write_zeroes_sectors = 0; } diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index c0347997f6ff73..3b19141cdb4bc2 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -794,13 +794,13 @@ static void flush_bio_list(struct r1conf *conf, struct bio *bio) while (bio) { /* submit pending writes */ struct bio *next = bio->bi_next; - struct md_rdev *rdev = (void *)bio->bi_disk; + struct md_rdev *rdev = (void *)bio->bi_bdev; bio->bi_next = NULL; bio_set_dev(bio, rdev->bdev); if (test_bit(Faulty, &rdev->flags)) { bio_io_error(bio); } else if (unlikely((bio_op(bio) == REQ_OP_DISCARD) && - !blk_queue_discard(bio->bi_disk->queue))) + !blk_queue_discard(bio->bi_bdev->bd_disk->queue))) /* Just ignore it */ bio_endio(bio); else @@ -1520,7 +1520,7 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio, trace_block_bio_remap(mbio, disk_devt(mddev->gendisk), r1_bio->sector); /* flush_pending_writes() needs access to the rdev so...*/ - mbio->bi_disk = (void *)conf->mirrors[i].rdev; + mbio->bi_bdev = (void *)conf->mirrors[i].rdev; cb = blk_check_plugged(raid1_unplug, mddev, sizeof(*plug)); if (cb) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index c5d88ef6a45c75..be8f14afb6d143 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -882,13 +882,13 @@ static void flush_pending_writes(struct r10conf *conf) while (bio) { /* submit pending writes */ struct bio *next = bio->bi_next; - struct md_rdev *rdev = (void*)bio->bi_disk; + struct md_rdev *rdev = (void*)bio->bi_bdev; bio->bi_next = NULL; bio_set_dev(bio, rdev->bdev); if (test_bit(Faulty, &rdev->flags)) { bio_io_error(bio); } else if (unlikely((bio_op(bio) == REQ_OP_DISCARD) && - !blk_queue_discard(bio->bi_disk->queue))) + !blk_queue_discard(bio->bi_bdev->bd_disk->queue))) /* Just ignore it */ bio_endio(bio); else @@ -1075,13 +1075,13 @@ static void raid10_unplug(struct blk_plug_cb *cb, bool from_schedule) while (bio) { /* submit pending writes */ struct bio *next = bio->bi_next; - struct md_rdev *rdev = (void*)bio->bi_disk; + struct md_rdev *rdev = (void*)bio->bi_bdev; bio->bi_next = NULL; bio_set_dev(bio, rdev->bdev); if (test_bit(Faulty, &rdev->flags)) { bio_io_error(bio); } else if (unlikely((bio_op(bio) == REQ_OP_DISCARD) && - !blk_queue_discard(bio->bi_disk->queue))) + !blk_queue_discard(bio->bi_bdev->bd_disk->queue))) /* Just ignore it */ bio_endio(bio); else @@ -1253,7 +1253,7 @@ static void raid10_write_one_disk(struct mddev *mddev, struct r10bio *r10_bio, trace_block_bio_remap(mbio, disk_devt(conf->mddev->gendisk), r10_bio->sector); /* flush_pending_writes() needs access to the rdev so...*/ - mbio->bi_disk = (void *)rdev; + mbio->bi_bdev = (void *)rdev; atomic_inc(&r10_bio->remaining); @@ -3003,7 +3003,7 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr, /* Again, very different code for resync and recovery. * Both must result in an r10bio with a list of bios that - * have bi_end_io, bi_sector, bi_disk set, + * have bi_end_io, bi_sector, bi_bdev set, * and bi_private set to the r10bio. * For recovery, we may actually create several r10bios * with 2 bios in each, that correspond to the bios in the main one. diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 3a90cc0e43ca8e..f411b9e5c332f4 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5310,7 +5310,7 @@ static int in_chunk_boundary(struct mddev *mddev, struct bio *bio) unsigned int chunk_sectors; unsigned int bio_sectors = bio_sectors(bio); - WARN_ON_ONCE(bio->bi_partno); + WARN_ON_ONCE(bio->bi_bdev->bd_partno); chunk_sectors = min(conf->chunk_sectors, conf->prev_chunk_sectors); return chunk_sectors >= diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c index 22e5617b2cea14..e03a1f38d75040 100644 --- a/drivers/nvdimm/blk.c +++ b/drivers/nvdimm/blk.c @@ -165,7 +165,7 @@ static int nsblk_do_bvec(struct nd_namespace_blk *nsblk, static blk_qc_t nd_blk_submit_bio(struct bio *bio) { struct bio_integrity_payload *bip; - struct nd_namespace_blk *nsblk = bio->bi_disk->private_data; + struct nd_namespace_blk *nsblk = bio->bi_bdev->bd_disk->private_data; struct bvec_iter iter; unsigned long start; struct bio_vec bvec; @@ -177,7 +177,7 @@ static blk_qc_t nd_blk_submit_bio(struct bio *bio) bip = bio_integrity(bio); rw = bio_data_dir(bio); - do_acct = blk_queue_io_stat(bio->bi_disk->queue); + do_acct = blk_queue_io_stat(bio->bi_bdev->bd_disk->queue); if (do_acct) start = bio_start_io_acct(bio); bio_for_each_segment(bvec, bio, iter) { diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 12ff6f8784ac11..41aa1f01fc0752 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -1442,7 +1442,7 @@ static int btt_do_bvec(struct btt *btt, struct bio_integrity_payload *bip, static blk_qc_t btt_submit_bio(struct bio *bio) { struct bio_integrity_payload *bip = bio_integrity(bio); - struct btt *btt = bio->bi_disk->private_data; + struct btt *btt = bio->bi_bdev->bd_disk->private_data; struct bvec_iter iter; unsigned long start; struct bio_vec bvec; @@ -1452,7 +1452,7 @@ static blk_qc_t btt_submit_bio(struct bio *bio) if (!bio_integrity_prep(bio)) return BLK_QC_T_NONE; - do_acct = blk_queue_io_stat(bio->bi_disk->queue); + do_acct = blk_queue_io_stat(bio->bi_bdev->bd_disk->queue); if (do_acct) start = bio_start_io_acct(bio); bio_for_each_segment(bvec, bio, iter) { diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 875076b0ea6c13..72740835c85c9b 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -197,13 +197,13 @@ static blk_qc_t pmem_submit_bio(struct bio *bio) unsigned long start; struct bio_vec bvec; struct bvec_iter iter; - struct pmem_device *pmem = bio->bi_disk->private_data; + struct pmem_device *pmem = bio->bi_bdev->bd_disk->private_data; struct nd_region *nd_region = to_region(pmem); if (bio->bi_opf & REQ_PREFLUSH) ret = nvdimm_flush(nd_region, bio); - do_acct = blk_queue_io_stat(bio->bi_disk->queue); + do_acct = blk_queue_io_stat(bio->bi_bdev->bd_disk->queue); if (do_acct) start = bio_start_io_acct(bio); bio_for_each_segment(bvec, bio, iter) { diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 42d50c8243458b..ae3ec261de60e2 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1113,7 +1113,7 @@ static int nvme_submit_user_cmd(struct request_queue *q, { bool write = nvme_is_write(cmd); struct nvme_ns *ns = q->queuedata; - struct gendisk *disk = ns ? ns->disk : NULL; + struct block_device *bdev = ns ? ns->disk->part0 : NULL; struct request *req; struct bio *bio = NULL; void *meta = NULL; @@ -1133,8 +1133,8 @@ static int nvme_submit_user_cmd(struct request_queue *q, if (ret) goto out; bio = req->bio; - bio->bi_disk = disk; - if (disk && meta_buffer && meta_len) { + bio->bi_bdev = bdev; + if (bdev && meta_buffer && meta_len) { meta = nvme_add_user_metadata(bio, meta_buffer, meta_len, meta_seed, write); if (IS_ERR(meta)) { diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c index 470cef3abec3db..6c8eab8de28821 100644 --- a/drivers/nvme/host/lightnvm.c +++ b/drivers/nvme/host/lightnvm.c @@ -757,7 +757,6 @@ static int nvme_nvm_submit_user_cmd(struct request_queue *q, { bool write = nvme_is_write((struct nvme_command *)vcmd); struct nvm_dev *dev = ns->ndev; - struct gendisk *disk = ns->disk; struct request *rq; struct bio *bio = NULL; __le64 *ppa_list = NULL; @@ -817,7 +816,7 @@ static int nvme_nvm_submit_user_cmd(struct request_queue *q, vcmd->ph_rw.metadata = cpu_to_le64(metadata_dma); } - bio->bi_disk = disk; + bio->bi_bdev = ns->disk->part0; } blk_execute_rq(q, NULL, rq, 0); diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index 9ac762b2881129..a6d44e7a775f54 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -296,7 +296,7 @@ static bool nvme_available_path(struct nvme_ns_head *head) blk_qc_t nvme_ns_head_submit_bio(struct bio *bio) { - struct nvme_ns_head *head = bio->bi_disk->private_data; + struct nvme_ns_head *head = bio->bi_bdev->bd_disk->private_data; struct device *dev = disk_to_dev(head->disk); struct nvme_ns *ns; blk_qc_t ret = BLK_QC_T_NONE; @@ -312,7 +312,7 @@ blk_qc_t nvme_ns_head_submit_bio(struct bio *bio) srcu_idx = srcu_read_lock(&head->srcu); ns = nvme_find_path(head); if (likely(ns)) { - bio->bi_disk = ns->disk; + bio->bi_bdev = ns->disk->part0; bio->bi_opf |= REQ_NVME_MPATH; trace_block_bio_remap(bio, disk_devt(ns->head->disk), bio->bi_iter.bi_sector); @@ -352,7 +352,7 @@ static void nvme_requeue_work(struct work_struct *work) * Reset disk to the mpath node and resubmit to select a new * path. */ - bio->bi_disk = head->disk; + bio->bi_bdev = head->disk->part0; submit_bio_noacct(bio); } } diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index cf6c49d09c820a..0bd7abf5194ec6 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -1461,7 +1461,7 @@ static int nvme_rdma_map_sg_pi(struct nvme_rdma_queue *queue, if (unlikely(nr)) goto mr_put; - nvme_rdma_set_sig_attrs(blk_get_integrity(bio->bi_disk), c, + nvme_rdma_set_sig_attrs(blk_get_integrity(bio->bi_bdev->bd_disk), c, req->mr->sig_attrs, ns->pi_type); nvme_rdma_set_prot_checks(c, &req->mr->sig_attrs->check_mask); diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 5c5cff3f237452..da33cb4cba28eb 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -879,7 +879,7 @@ dcssblk_submit_bio(struct bio *bio) blk_queue_split(&bio); bytes_done = 0; - dev_info = bio->bi_disk->private_data; + dev_info = bio->bi_bdev->bd_disk->private_data; if (dev_info == NULL) goto fail; if ((bio->bi_iter.bi_sector & 7) != 0 || diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c index c2536f7767b366..d1ed39162943d5 100644 --- a/drivers/s390/block/xpram.c +++ b/drivers/s390/block/xpram.c @@ -184,7 +184,7 @@ static unsigned long xpram_highest_page_index(void) */ static blk_qc_t xpram_submit_bio(struct bio *bio) { - xpram_device_t *xdev = bio->bi_disk->private_data; + xpram_device_t *xdev = bio->bi_bdev->bd_disk->private_data; struct bio_vec bvec; struct bvec_iter iter; unsigned int index; diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index 6ff44e53814c6f..113cb85c1fd448 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -2674,7 +2674,7 @@ static void __btrfsic_submit_bio(struct bio *bio) mutex_lock(&btrfsic_mutex); /* since btrfsic_submit_bio() is also called before * btrfsic_mount(), this might return NULL */ - dev_state = btrfsic_dev_state_lookup(bio_dev(bio) + bio->bi_partno); + dev_state = btrfsic_dev_state_lookup(bio->bi_bdev->bd_dev); if (NULL != dev_state && (bio_op(bio) == REQ_OP_WRITE) && bio_has_data(bio)) { unsigned int i = 0; @@ -2690,9 +2690,9 @@ static void __btrfsic_submit_bio(struct bio *bio) bio_is_patched = 0; if (dev_state->state->print_mask & BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH) - pr_info("submit_bio(rw=%d,0x%x, bi_vcnt=%u, bi_sector=%llu (bytenr %llu), bi_disk=%p)\n", + pr_info("submit_bio(rw=%d,0x%x, bi_vcnt=%u, bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n", bio_op(bio), bio->bi_opf, segs, - bio->bi_iter.bi_sector, dev_bytenr, bio->bi_disk); + bio->bi_iter.bi_sector, dev_bytenr, bio->bi_bdev); mapped_datav = kmalloc_array(segs, sizeof(*mapped_datav), GFP_NOFS); @@ -2721,8 +2721,8 @@ static void __btrfsic_submit_bio(struct bio *bio) } else if (NULL != dev_state && (bio->bi_opf & REQ_PREFLUSH)) { if (dev_state->state->print_mask & BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH) - pr_info("submit_bio(rw=%d,0x%x FLUSH, disk=%p)\n", - bio_op(bio), bio->bi_opf, bio->bi_disk); + pr_info("submit_bio(rw=%d,0x%x FLUSH, bdev=%p)\n", + bio_op(bio), bio->bi_opf, bio->bi_bdev); if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) { if ((dev_state->state->print_mask & (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH | diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c index 93fbf87bdc8d3b..b2204a2942cb9d 100644 --- a/fs/btrfs/raid56.c +++ b/fs/btrfs/raid56.c @@ -1105,8 +1105,7 @@ static int rbio_add_io_page(struct btrfs_raid_bio *rbio, * devices or if they are not contiguous */ if (last_end == disk_start && !last->bi_status && - last->bi_disk == stripe->dev->bdev->bd_disk && - last->bi_partno == stripe->dev->bdev->bd_partno) { + last->bi_bdev == stripe->dev->bdev) { ret = bio_add_page(last, page, PAGE_SIZE, 0); if (ret == PAGE_SIZE) return 0; @@ -1357,9 +1356,7 @@ static int find_bio_stripe(struct btrfs_raid_bio *rbio, for (i = 0; i < rbio->bbio->num_stripes; i++) { stripe = &rbio->bbio->stripes[i]; if (in_range(physical, stripe->physical, rbio->stripe_len) && - stripe->dev->bdev && - bio->bi_disk == stripe->dev->bdev->bd_disk && - bio->bi_partno == stripe->dev->bdev->bd_partno) { + stripe->dev->bdev && bio->bi_bdev == stripe->dev->bdev) { return i; } } diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 5f4f88a4d2c8a2..33f8f0f108bfcb 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -1695,7 +1695,7 @@ static void scrub_wr_submit(struct scrub_ctx *sctx) sbio = sctx->wr_curr_bio; sctx->wr_curr_bio = NULL; - WARN_ON(!sbio->bio->bi_disk); + WARN_ON(!sbio->bio->bi_bdev); scrub_pending_bio_inc(sctx); /* process all writes in a single worker thread. Then the block layer * orders the requests before sending them to the driver which diff --git a/fs/direct-io.c b/fs/direct-io.c index d53fa92a1ab656..2660e744da2d81 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -434,7 +434,7 @@ static inline void dio_bio_submit(struct dio *dio, struct dio_submit *sdio) if (dio->is_async && dio->op == REQ_OP_READ && dio->should_dirty) bio_set_pages_dirty(bio); - dio->bio_disk = bio->bi_disk; + dio->bio_disk = bio->bi_bdev->bd_disk; if (sdio->submit_io) { sdio->submit_io(bio, dio->inode, sdio->logical_offset_in_bio); diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index aa34d620bec982..8cbf0315975228 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -427,16 +427,6 @@ int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) return 0; } -/* - * Return true, if pre_bio's bdev is same as its target device. - */ -static bool __same_bdev(struct f2fs_sb_info *sbi, - block_t blk_addr, struct bio *bio) -{ - struct block_device *b = f2fs_target_device(sbi, blk_addr, NULL); - return bio->bi_disk == b->bd_disk && bio->bi_partno == b->bd_partno; -} - static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages) { struct f2fs_sb_info *sbi = fio->sbi; @@ -741,7 +731,7 @@ static bool page_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, return false; if (last_blkaddr + 1 != cur_blkaddr) return false; - return __same_bdev(sbi, cur_blkaddr, bio); + return bio->bi_bdev == f2fs_target_device(sbi, cur_blkaddr, NULL); } static bool io_type_is_mergeable(struct f2fs_bio_info *io, diff --git a/include/linux/bio.h b/include/linux/bio.h index 1edda614f7ce2b..12af7aa5db3778 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -483,24 +483,22 @@ extern void bvec_free(mempool_t *, struct bio_vec *, unsigned int); extern unsigned int bvec_nr_vecs(unsigned short idx); extern const char *bio_devname(struct bio *bio, char *buffer); -#define bio_set_dev(bio, bdev) \ -do { \ - if ((bio)->bi_disk != (bdev)->bd_disk) \ - bio_clear_flag(bio, BIO_THROTTLED);\ - (bio)->bi_disk = (bdev)->bd_disk; \ - (bio)->bi_partno = (bdev)->bd_partno; \ - bio_associate_blkg(bio); \ +#define bio_set_dev(bio, bdev) \ +do { \ + if ((bio)->bi_bdev != (bdev)) \ + bio_clear_flag(bio, BIO_THROTTLED); \ + (bio)->bi_bdev = (bdev); \ + bio_associate_blkg(bio); \ } while (0) #define bio_copy_dev(dst, src) \ do { \ - (dst)->bi_disk = (src)->bi_disk; \ - (dst)->bi_partno = (src)->bi_partno; \ + (dst)->bi_bdev = (src)->bi_bdev; \ bio_clone_blkg_association(dst, src); \ } while (0) #define bio_dev(bio) \ - disk_devt((bio)->bi_disk) + disk_devt((bio)->bi_bdev->bd_disk) #ifdef CONFIG_BLK_CGROUP void bio_associate_blkg(struct bio *bio); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index d705b174d346ac..6b410dab48eed4 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -602,8 +602,8 @@ static inline void blk_rq_bio_prep(struct request *rq, struct bio *bio, rq->bio = rq->biotail = bio; rq->ioprio = bio_prio(bio); - if (bio->bi_disk) - rq->rq_disk = bio->bi_disk; + if (bio->bi_bdev) + rq->rq_disk = bio->bi_bdev->bd_disk; } blk_qc_t blk_mq_submit_bio(struct bio *bio); diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 866f74261b3ba8..8ebd8be3e05082 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -222,7 +222,7 @@ static inline void bio_issue_init(struct bio_issue *issue, */ struct bio { struct bio *bi_next; /* request queue link */ - struct gendisk *bi_disk; + struct block_device *bi_bdev; unsigned int bi_opf; /* bottom bits req flags, * top bits REQ_OP. Use * accessors. @@ -231,7 +231,6 @@ struct bio { unsigned short bi_ioprio; unsigned short bi_write_hint; blk_status_t bi_status; - u8 bi_partno; atomic_t __bi_remaining; struct bvec_iter bi_iter; diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f94ee3089e015e..b55bd534b2e1e2 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1967,7 +1967,8 @@ void part_end_io_acct(struct block_device *part, struct bio *bio, */ static inline unsigned long bio_start_io_acct(struct bio *bio) { - return disk_start_io_acct(bio->bi_disk, bio_sectors(bio), bio_op(bio)); + return disk_start_io_acct(bio->bi_bdev->bd_disk, bio_sectors(bio), + bio_op(bio)); } /** @@ -1977,7 +1978,7 @@ static inline unsigned long bio_start_io_acct(struct bio *bio) */ static inline void bio_end_io_acct(struct bio *bio, unsigned long start_time) { - return disk_end_io_acct(bio->bi_disk, bio_op(bio), start_time); + return disk_end_io_acct(bio->bi_bdev->bd_disk, bio_op(bio), start_time); } int bdev_read_only(struct block_device *bdev); diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index fb0fe4c66b84a1..9e9ee494504355 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -903,7 +903,7 @@ static void blk_add_trace_bio(struct request_queue *q, struct bio *bio, static void blk_add_trace_bio_bounce(void *ignore, struct bio *bio) { - blk_add_trace_bio(bio->bi_disk->queue, bio, BLK_TA_BOUNCE, 0); + blk_add_trace_bio(bio->bi_bdev->bd_disk->queue, bio, BLK_TA_BOUNCE, 0); } static void blk_add_trace_bio_complete(void *ignore, @@ -915,22 +915,24 @@ static void blk_add_trace_bio_complete(void *ignore, static void blk_add_trace_bio_backmerge(void *ignore, struct bio *bio) { - blk_add_trace_bio(bio->bi_disk->queue, bio, BLK_TA_BACKMERGE, 0); + blk_add_trace_bio(bio->bi_bdev->bd_disk->queue, bio, BLK_TA_BACKMERGE, + 0); } static void blk_add_trace_bio_frontmerge(void *ignore, struct bio *bio) { - blk_add_trace_bio(bio->bi_disk->queue, bio, BLK_TA_FRONTMERGE, 0); + blk_add_trace_bio(bio->bi_bdev->bd_disk->queue, bio, BLK_TA_FRONTMERGE, + 0); } static void blk_add_trace_bio_queue(void *ignore, struct bio *bio) { - blk_add_trace_bio(bio->bi_disk->queue, bio, BLK_TA_QUEUE, 0); + blk_add_trace_bio(bio->bi_bdev->bd_disk->queue, bio, BLK_TA_QUEUE, 0); } static void blk_add_trace_getrq(void *ignore, struct bio *bio) { - blk_add_trace_bio(bio->bi_disk->queue, bio, BLK_TA_GETRQ, 0); + blk_add_trace_bio(bio->bi_bdev->bd_disk->queue, bio, BLK_TA_GETRQ, 0); } static void blk_add_trace_plug(void *ignore, struct request_queue *q) @@ -967,7 +969,7 @@ static void blk_add_trace_unplug(void *ignore, struct request_queue *q, static void blk_add_trace_split(void *ignore, struct bio *bio, unsigned int pdu) { - struct request_queue *q = bio->bi_disk->queue; + struct request_queue *q = bio->bi_bdev->bd_disk->queue; struct blk_trace *bt; rcu_read_lock(); @@ -997,7 +999,7 @@ static void blk_add_trace_split(void *ignore, struct bio *bio, unsigned int pdu) static void blk_add_trace_bio_remap(void *ignore, struct bio *bio, dev_t dev, sector_t from) { - struct request_queue *q = bio->bi_disk->queue; + struct request_queue *q = bio->bi_bdev->bd_disk->queue; struct blk_trace *bt; struct blk_io_trace_remap r; diff --git a/mm/page_io.c b/mm/page_io.c index 9bca17ecc4df1d..a75f35464a4e73 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -433,7 +433,7 @@ int swap_readpage(struct page *page, bool synchronous) ret = -ENOMEM; goto out; } - disk = bio->bi_disk; + disk = bio->bi_bdev->bd_disk; /* * Keep this task valid during swap readpage because the oom killer may * attempt to access it in the page fault retry time check. From patchwork Sun Jan 24 10:02:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12042199 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_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 0EAFFC4332B for ; Sun, 24 Jan 2021 10:07:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E736F22AAA for ; Sun, 24 Jan 2021 10:07:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726787AbhAXKG5 (ORCPT ); Sun, 24 Jan 2021 05:06:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47670 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726763AbhAXKGW (ORCPT ); Sun, 24 Jan 2021 05:06:22 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DF416C0613D6; Sun, 24 Jan 2021 02:05:41 -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: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=RH7TZ8ohyvTJp8lOk7BA/IzeBrwlWUPu3Ldc5wD6RPE=; b=Ww77yYmRbbYO5F8pNI5JlZ6xNf 87JiKeVqpbxgr9hctK44GbBQodFqgMFf2KEhxkQbPGgUHnG6jH8jTJIHnoPku1MzguoRAj1qUQ6Mq 8l9YWtAXk5ht/svGWUeg7vKz25IOw5l0igtbY+ZEJ1Hsd6rot+oCLK+8lLowt+lzAQBBwSvSU/d6M Zb2ATnBqKCcF8o2auBY2slWqA/FNeYkhFPPGaImZtI9/1PIEXWSOsqwRDT5VE/lxHSiz6wUP+T/xj LeqSGj52RiV0YKqoqe5XtAOVhATSTWLufsneg+KNU1JqvJIiCjHeXd6MYeLA2Wp674LGpKpUlqNU4 dHgRUl6Q==; Received: from [2001:4bb8:188:1954:a3b3:627f:702b:2136] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1l3cGz-002q9c-LX; Sun, 24 Jan 2021 10:05:35 +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: [PATCH 04/10] block: simplify submit_bio_checks a bit Date: Sun, 24 Jan 2021 11:02:35 +0100 Message-Id: <20210124100241.1167849-5-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210124100241.1167849-1-hch@lst.de> References: <20210124100241.1167849-1-hch@lst.de> MIME-Version: 1.0 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-block@vger.kernel.org Merge a few checks for whole devices vs partitions to streamline the sanity checks. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo Reviewed-by: Johannes Thumshirn --- block/blk-core.c | 39 ++++++++++++++------------------------- 1 file changed, 14 insertions(+), 25 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index a3a54cd86c9c00..64f69022de9627 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -692,9 +692,9 @@ static inline bool should_fail_request(struct block_device *part, #endif /* CONFIG_FAIL_MAKE_REQUEST */ -static inline bool bio_check_ro(struct bio *bio, struct block_device *part) +static inline bool bio_check_ro(struct bio *bio) { - if (op_is_write(bio_op(bio)) && bdev_read_only(part)) { + if (op_is_write(bio_op(bio)) && bdev_read_only(bio->bi_bdev)) { char b[BDEVNAME_SIZE]; if (op_is_flush(bio->bi_opf) && !bio_sectors(bio)) @@ -702,7 +702,7 @@ static inline bool bio_check_ro(struct bio *bio, struct block_device *part) WARN_ONCE(1, "Trying to write to read-only block-device %s (partno %d)\n", - bio_devname(bio, b), part->bd_partno); + bio_devname(bio, b), bio->bi_bdev->bd_partno); /* Older lvm-tools actually trigger this */ return false; } @@ -723,8 +723,9 @@ ALLOW_ERROR_INJECTION(should_fail_bio, ERRNO); * This may well happen - the kernel calls bread() without checking the size of * the device, e.g., when mounting a file system. */ -static inline int bio_check_eod(struct bio *bio, sector_t maxsector) +static inline int bio_check_eod(struct bio *bio) { + sector_t maxsector = bdev_nr_sectors(bio->bi_bdev); unsigned int nr_sectors = bio_sectors(bio); if (nr_sectors && maxsector && @@ -739,28 +740,20 @@ static inline int bio_check_eod(struct bio *bio, sector_t maxsector) /* * Remap block n of partition p to block n+start(p) of the disk. */ -static inline int blk_partition_remap(struct bio *bio) +static int blk_partition_remap(struct bio *bio) { struct block_device *p = bio->bi_bdev; - int ret = -EIO; if (unlikely(should_fail_request(p, bio->bi_iter.bi_size))) - goto out; - if (unlikely(bio_check_ro(bio, p))) - goto out; - + return -EIO; if (bio_sectors(bio)) { - if (bio_check_eod(bio, bdev_nr_sectors(p))) - goto out; bio->bi_iter.bi_sector += p->bd_start_sect; trace_block_bio_remap(bio, p->bd_dev, bio->bi_iter.bi_sector - p->bd_start_sect); } bio->bi_bdev = bdev_whole(p); - ret = 0; -out: - return ret; + return 0; } /* @@ -820,16 +813,12 @@ static noinline_for_stack bool submit_bio_checks(struct bio *bio) if (should_fail_bio(bio)) goto end_io; - - if (bio->bi_bdev->bd_partno) { - if (unlikely(blk_partition_remap(bio))) - goto end_io; - } else { - if (unlikely(bio_check_ro(bio, bdev_whole(bdev)))) - goto end_io; - if (unlikely(bio_check_eod(bio, get_capacity(bdev->bd_disk)))) - goto end_io; - } + if (unlikely(bio_check_ro(bio))) + goto end_io; + if (unlikely(bio_check_eod(bio))) + goto end_io; + if (bio->bi_bdev->bd_partno && unlikely(blk_partition_remap(bio))) + goto end_io; /* * Filter flush bio's early so that bio based drivers without flush From patchwork Sun Jan 24 10:02:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12042203 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_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 BE353C433E6 for ; Sun, 24 Jan 2021 10:07:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9611B22AAA for ; Sun, 24 Jan 2021 10:07:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726795AbhAXKHA (ORCPT ); Sun, 24 Jan 2021 05:07:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47746 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726765AbhAXKGo (ORCPT ); Sun, 24 Jan 2021 05:06:44 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6563AC0613ED; Sun, 24 Jan 2021 02:05:46 -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: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=+C1WbEDt8bDZJfBsa8pBygC2sdTHVEwbwKUtsHvNJpI=; b=jJL+eqGysGfOJp3LpA1p82bAph SQz7HMhZIvq1kGR1dnYAWjgLLpnUFnN6u4r0BEYxabwZszZ5rYSu0gXqxPAy9eJw3kntHBqpLXUEc 04FBvuqefx01gQQUAFuIGuKs2PupMo11uCl1aj9Lxe/qAz/WQPDCGkCG/ThzyTXc+xPGSHco/Kl8f 2wK/ydFfvgMXGA8VeWrZzEmfD0sxNeTuRh5AfmqavYFP+lYOmn1EYtqFGcP2JV33T6zldthwYU3s5 B8Ql0stlBvT7m85ra3JC8vcEXBW9ZLL2J9ZgIYQ2jIhf+ItuDY76DOdIfz+BhMBd/hcQv5CEUZXzH LEwSIfBg==; Received: from [2001:4bb8:188:1954:a3b3:627f:702b:2136] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1l3cH5-002q9k-0b; Sun, 24 Jan 2021 10:05:40 +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: [PATCH 05/10] block: do not reassig ->bi_bdev when partition remapping Date: Sun, 24 Jan 2021 11:02:36 +0100 Message-Id: <20210124100241.1167849-6-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210124100241.1167849-1-hch@lst.de> References: <20210124100241.1167849-1-hch@lst.de> MIME-Version: 1.0 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-block@vger.kernel.org There is no good reason to reassign ->bi_bdev when remapping the partition-relative block number to the device wide one, as all the information required by the drivers comes from the gendisk anyway. Keeping the original ->bi_bdev alive will allow to greatly simplify the partition-away I/O accounting. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo --- block/blk-core.c | 5 +++-- include/linux/bio.h | 2 ++ include/linux/blk_types.h | 1 + 3 files changed, 6 insertions(+), 2 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 64f69022de9627..1c1b97a82caa2e 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -752,7 +752,7 @@ static int blk_partition_remap(struct bio *bio) bio->bi_iter.bi_sector - p->bd_start_sect); } - bio->bi_bdev = bdev_whole(p); + bio_set_flag(bio, BIO_REMAPPED); return 0; } @@ -817,7 +817,8 @@ static noinline_for_stack bool submit_bio_checks(struct bio *bio) goto end_io; if (unlikely(bio_check_eod(bio))) goto end_io; - if (bio->bi_bdev->bd_partno && unlikely(blk_partition_remap(bio))) + if (bio->bi_bdev->bd_partno && !bio_flagged(bio, BIO_REMAPPED) && + unlikely(blk_partition_remap(bio))) goto end_io; /* diff --git a/include/linux/bio.h b/include/linux/bio.h index 12af7aa5db3778..2f1155eabaff29 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -485,6 +485,7 @@ extern const char *bio_devname(struct bio *bio, char *buffer); #define bio_set_dev(bio, bdev) \ do { \ + bio_clear_flag(bio, BIO_REMAPPED); \ if ((bio)->bi_bdev != (bdev)) \ bio_clear_flag(bio, BIO_THROTTLED); \ (bio)->bi_bdev = (bdev); \ @@ -493,6 +494,7 @@ do { \ #define bio_copy_dev(dst, src) \ do { \ + bio_clear_flag(dst, BIO_REMAPPED); \ (dst)->bi_bdev = (src)->bi_bdev; \ bio_clone_blkg_association(dst, src); \ } while (0) diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 8ebd8be3e05082..1bc6f6a01070fc 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -303,6 +303,7 @@ enum { * of this bio. */ BIO_CGROUP_ACCT, /* has been accounted to a cgroup */ BIO_TRACKED, /* set if bio goes through the rq_qos path */ + BIO_REMAPPED, BIO_FLAG_LAST }; From patchwork Sun Jan 24 10:02:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12042205 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_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 6E120C433E9 for ; Sun, 24 Jan 2021 10:07:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 49B7F22AAA for ; Sun, 24 Jan 2021 10:07:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726810AbhAXKHS (ORCPT ); Sun, 24 Jan 2021 05:07:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47750 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726769AbhAXKGo (ORCPT ); Sun, 24 Jan 2021 05:06:44 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8558AC061786; Sun, 24 Jan 2021 02:05:52 -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: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=fF4LgAuflzfSMa50jca4zVDBd+HGbIj8VQMctaD18uc=; b=BhwQ082TMQWiz+W8M52gH6BEC8 sfE2G4ff1OWTxmzOtIlmLujHJI/+6FJ54iE4eNYeirGTi+8C3V3piNpLbRDiLBtIcW8MivwB4n/9d fyiWqAd/Zo6wFv8AD6IOd+mRcagmYQOqExnbHfxoGyBLIqMGne4W1JB5xszq5ynI2I34LAeWIR6jV qMkATDdmFjS8epQvGFumUJo/iVoeeHhhBTF/ZuEKw8xPvq6n3cqYHSjcRlhKOTX6CNn4zL92PHogX eaEzCxvfv3NC2FFqSlJhPXgwZ8akSGF+VRsDBuAaKlcD8Zc6pxXWagFyZncX3oU+Pkc4/pLc2sf83 EHBqnyzg==; Received: from [2001:4bb8:188:1954:a3b3:627f:702b:2136] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1l3cH7-002q9r-Ll; Sun, 24 Jan 2021 10:05:44 +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: [PATCH 06/10] block: use ->bi_bdev for bio based I/O accounting Date: Sun, 24 Jan 2021 11:02:37 +0100 Message-Id: <20210124100241.1167849-7-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210124100241.1167849-1-hch@lst.de> References: <20210124100241.1167849-1-hch@lst.de> MIME-Version: 1.0 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-block@vger.kernel.org Rework the I/O accounting for bio based drivers to use ->bi_bdev. This means all drivers can now simply use bio_start_io_acct to start accounting, and it will take partitions into account automatically. To end I/O account either bio_end_io_acct can be used if the driver never remaps I/O to a different device, or bio_end_io_acct_remapped if the driver did remap the I/O. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo --- block/blk-core.c | 23 +++++++++++++---------- drivers/md/bcache/request.c | 34 +++++++++++++++++++++------------- drivers/md/md.c | 8 ++++---- include/linux/blkdev.h | 21 ++++----------------- 4 files changed, 42 insertions(+), 44 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 1c1b97a82caa2e..9315311c27a913 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1321,14 +1321,17 @@ static unsigned long __part_start_io_acct(struct block_device *part, return now; } -unsigned long part_start_io_acct(struct gendisk *disk, struct block_device **part, - struct bio *bio) +/** + * bio_start_io_acct - start I/O accounting for bio based drivers + * @bio: bio to start account for + * + * Returns the start time that should be passed back to bio_end_io_acct(). + */ +unsigned long bio_start_io_acct(struct bio *bio) { - *part = disk_map_sector_rcu(disk, bio->bi_iter.bi_sector); - - return __part_start_io_acct(*part, bio_sectors(bio), bio_op(bio)); + return __part_start_io_acct(bio->bi_bdev, bio_sectors(bio), bio_op(bio)); } -EXPORT_SYMBOL_GPL(part_start_io_acct); +EXPORT_SYMBOL_GPL(bio_start_io_acct); unsigned long disk_start_io_acct(struct gendisk *disk, unsigned int sectors, unsigned int op) @@ -1351,12 +1354,12 @@ static void __part_end_io_acct(struct block_device *part, unsigned int op, part_stat_unlock(); } -void part_end_io_acct(struct block_device *part, struct bio *bio, - unsigned long start_time) +void bio_end_io_acct_remapped(struct bio *bio, unsigned long start_time, + struct block_device *orig_bdev) { - __part_end_io_acct(part, bio_op(bio), start_time); + __part_end_io_acct(orig_bdev, bio_op(bio), start_time); } -EXPORT_SYMBOL_GPL(part_end_io_acct); +EXPORT_SYMBOL_GPL(bio_end_io_acct_remapped); void disk_end_io_acct(struct gendisk *disk, unsigned int op, unsigned long start_time) diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index dfc35d6d05ed1c..29c231758293e2 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -475,7 +475,7 @@ struct search { unsigned int read_dirty_data:1; unsigned int cache_missed:1; - struct block_device *part; + struct block_device *orig_bdev; unsigned long start_time; struct btree_op op; @@ -670,8 +670,8 @@ static void bio_complete(struct search *s) { if (s->orig_bio) { /* Count on bcache device */ - part_end_io_acct(s->part, s->orig_bio, s->start_time); - + bio_end_io_acct_remapped(s->orig_bio, s->start_time, + s->orig_bdev); trace_bcache_request_end(s->d, s->orig_bio); s->orig_bio->bi_status = s->iop.status; bio_endio(s->orig_bio); @@ -714,7 +714,8 @@ static void search_free(struct closure *cl) } static inline struct search *search_alloc(struct bio *bio, - struct bcache_device *d) + struct bcache_device *d, struct block_device *orig_bdev, + unsigned long start_time) { struct search *s; @@ -732,7 +733,8 @@ static inline struct search *search_alloc(struct bio *bio, s->write = op_is_write(bio_op(bio)); s->read_dirty_data = 0; /* Count on the bcache device */ - s->start_time = part_start_io_acct(d->disk, &s->part, bio); + s->orig_bdev = orig_bdev; + s->start_time = start_time; s->iop.c = d->c; s->iop.bio = NULL; s->iop.inode = d->id; @@ -1074,7 +1076,7 @@ struct detached_dev_io_private { unsigned long start_time; bio_end_io_t *bi_end_io; void *bi_private; - struct block_device *part; + struct block_device *orig_bdev; }; static void detached_dev_end_io(struct bio *bio) @@ -1086,7 +1088,7 @@ static void detached_dev_end_io(struct bio *bio) bio->bi_private = ddip->bi_private; /* Count on the bcache device */ - part_end_io_acct(ddip->part, bio, ddip->start_time); + bio_end_io_acct_remapped(bio, ddip->start_time, ddip->orig_bdev); if (bio->bi_status) { struct cached_dev *dc = container_of(ddip->d, @@ -1099,7 +1101,8 @@ static void detached_dev_end_io(struct bio *bio) bio->bi_end_io(bio); } -static void detached_dev_do_request(struct bcache_device *d, struct bio *bio) +static void detached_dev_do_request(struct bcache_device *d, struct bio *bio, + struct block_device *orig_bdev, unsigned long start_time) { struct detached_dev_io_private *ddip; struct cached_dev *dc = container_of(d, struct cached_dev, disk); @@ -1112,7 +1115,8 @@ static void detached_dev_do_request(struct bcache_device *d, struct bio *bio) ddip = kzalloc(sizeof(struct detached_dev_io_private), GFP_NOIO); ddip->d = d; /* Count on the bcache device */ - ddip->start_time = part_start_io_acct(d->disk, &ddip->part, bio); + ddip->orig_bdev = orig_bdev; + ddip->start_time = start_time; ddip->bi_end_io = bio->bi_end_io; ddip->bi_private = bio->bi_private; bio->bi_end_io = detached_dev_end_io; @@ -1168,8 +1172,10 @@ static void quit_max_writeback_rate(struct cache_set *c, blk_qc_t cached_dev_submit_bio(struct bio *bio) { struct search *s; - struct bcache_device *d = bio->bi_bdev->bd_disk->private_data; + struct block_device *orig_bdev = bio->bi_bdev; + struct bcache_device *d = orig_bdev->bd_disk->private_data; struct cached_dev *dc = container_of(d, struct cached_dev, disk); + unsigned long start_time; int rw = bio_data_dir(bio); if (unlikely((d->c && test_bit(CACHE_SET_IO_DISABLE, &d->c->flags)) || @@ -1194,11 +1200,13 @@ blk_qc_t cached_dev_submit_bio(struct bio *bio) } } + start_time = bio_start_io_acct(bio); + bio_set_dev(bio, dc->bdev); bio->bi_iter.bi_sector += dc->sb.data_offset; if (cached_dev_get(dc)) { - s = search_alloc(bio, d); + s = search_alloc(bio, d, orig_bdev, start_time); trace_bcache_request_start(s->d, bio); if (!bio->bi_iter.bi_size) { @@ -1219,7 +1227,7 @@ blk_qc_t cached_dev_submit_bio(struct bio *bio) } } else /* I/O request sent to backing device */ - detached_dev_do_request(d, bio); + detached_dev_do_request(d, bio, orig_bdev, start_time); return BLK_QC_T_NONE; } @@ -1283,7 +1291,7 @@ blk_qc_t flash_dev_submit_bio(struct bio *bio) return BLK_QC_T_NONE; } - s = search_alloc(bio, d); + s = search_alloc(bio, d, bio->bi_bdev, bio_start_io_acct(bio)); cl = &s->cl; bio = &s->bio.bio; diff --git a/drivers/md/md.c b/drivers/md/md.c index ade2b99c51d390..5dd0c5e4c7632b 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -463,8 +463,8 @@ struct md_io { struct mddev *mddev; bio_end_io_t *orig_bi_end_io; void *orig_bi_private; + struct block_device *orig_bi_bdev; unsigned long start_time; - struct block_device *part; }; static void md_end_io(struct bio *bio) @@ -472,7 +472,7 @@ static void md_end_io(struct bio *bio) struct md_io *md_io = bio->bi_private; struct mddev *mddev = md_io->mddev; - part_end_io_acct(md_io->part, bio, md_io->start_time); + bio_end_io_acct_remapped(bio, md_io->start_time, md_io->orig_bi_bdev); bio->bi_end_io = md_io->orig_bi_end_io; bio->bi_private = md_io->orig_bi_private; @@ -514,12 +514,12 @@ static blk_qc_t md_submit_bio(struct bio *bio) md_io->mddev = mddev; md_io->orig_bi_end_io = bio->bi_end_io; md_io->orig_bi_private = bio->bi_private; + md_io->orig_bi_bdev = bio->bi_bdev; bio->bi_end_io = md_end_io; bio->bi_private = md_io; - md_io->start_time = part_start_io_acct(mddev->gendisk, - &md_io->part, bio); + md_io->start_time = bio_start_io_acct(bio); } /* bio could be mergeable after passing to underlayer */ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index b55bd534b2e1e2..4526b9ef8edbe3 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1954,22 +1954,9 @@ unsigned long disk_start_io_acct(struct gendisk *disk, unsigned int sectors, void disk_end_io_acct(struct gendisk *disk, unsigned int op, unsigned long start_time); -unsigned long part_start_io_acct(struct gendisk *disk, - struct block_device **part, struct bio *bio); -void part_end_io_acct(struct block_device *part, struct bio *bio, - unsigned long start_time); - -/** - * bio_start_io_acct - start I/O accounting for bio based drivers - * @bio: bio to start account for - * - * Returns the start time that should be passed back to bio_end_io_acct(). - */ -static inline unsigned long bio_start_io_acct(struct bio *bio) -{ - return disk_start_io_acct(bio->bi_bdev->bd_disk, bio_sectors(bio), - bio_op(bio)); -} +unsigned long bio_start_io_acct(struct bio *bio); +void bio_end_io_acct_remapped(struct bio *bio, unsigned long start_time, + struct block_device *orig_bdev); /** * bio_end_io_acct - end I/O accounting for bio based drivers @@ -1978,7 +1965,7 @@ static inline unsigned long bio_start_io_acct(struct bio *bio) */ static inline void bio_end_io_acct(struct bio *bio, unsigned long start_time) { - return disk_end_io_acct(bio->bi_bdev->bd_disk, bio_op(bio), start_time); + return bio_end_io_acct_remapped(bio, start_time, bio->bi_bdev); } int bdev_read_only(struct block_device *bdev); From patchwork Sun Jan 24 10:02:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12042207 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_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 76D50C433E0 for ; Sun, 24 Jan 2021 10:07:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4C21422AAA for ; Sun, 24 Jan 2021 10:07:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726820AbhAXKH1 (ORCPT ); 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Received: from [2001:4bb8:188:1954:a3b3:627f:702b:2136] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1l3cHD-002qA0-TP; Sun, 24 Jan 2021 10:05:49 +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: [PATCH 07/10] blk-mq: use ->bi_bdev for I/O accounting Date: Sun, 24 Jan 2021 11:02:38 +0100 Message-Id: <20210124100241.1167849-8-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210124100241.1167849-1-hch@lst.de> References: <20210124100241.1167849-1-hch@lst.de> MIME-Version: 1.0 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-block@vger.kernel.org Remove the reverse map from a sector to a partition for I/O accounting by simply using ->bi_bdev. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo --- block/blk-core.c | 6 +++++- block/blk.h | 2 -- block/genhd.c | 48 ------------------------------------------------ 3 files changed, 5 insertions(+), 51 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 9315311c27a913..6dfbdde6b9ff84 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1298,7 +1298,11 @@ void blk_account_io_start(struct request *rq) if (!blk_do_io_stat(rq)) return; - rq->part = disk_map_sector_rcu(rq->rq_disk, blk_rq_pos(rq)); + /* passthrough requests can hold bios that do not have ->bi_bdev set */ + if (rq->bio && rq->bio->bi_bdev) + rq->part = rq->bio->bi_bdev; + else + rq->part = rq->rq_disk->part0; part_stat_lock(); update_io_ticks(rq->part, jiffies, false); diff --git a/block/blk.h b/block/blk.h index 10ab7c0d0766f0..d965cacc5bdaa1 100644 --- a/block/blk.h +++ b/block/blk.h @@ -333,8 +333,6 @@ void blk_queue_free_zone_bitmaps(struct request_queue *q); static inline void blk_queue_free_zone_bitmaps(struct request_queue *q) {} #endif -struct block_device *disk_map_sector_rcu(struct gendisk *disk, sector_t sector); - int blk_alloc_devt(struct block_device *part, dev_t *devt); void blk_free_devt(dev_t devt); char *disk_name(struct gendisk *hd, int partno, char *buf); diff --git a/block/genhd.c b/block/genhd.c index e536d0b4bbae34..e46de616a19e59 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -285,54 +285,6 @@ void disk_part_iter_exit(struct disk_part_iter *piter) } EXPORT_SYMBOL_GPL(disk_part_iter_exit); -static inline int sector_in_part(struct block_device *part, sector_t sector) -{ - return part->bd_start_sect <= sector && - sector < part->bd_start_sect + bdev_nr_sectors(part); -} - -/** - * disk_map_sector_rcu - map sector to partition - * @disk: gendisk of interest - * @sector: sector to map - * - * Find out which partition @sector maps to on @disk. This is - * primarily used for stats accounting. - * - * CONTEXT: - * RCU read locked. - * - * RETURNS: - * Found partition on success, part0 is returned if no partition matches - * or the matched partition is being deleted. - */ -struct block_device *disk_map_sector_rcu(struct gendisk *disk, sector_t sector) -{ - struct disk_part_tbl *ptbl; - struct block_device *part; - int i; - - rcu_read_lock(); - ptbl = rcu_dereference(disk->part_tbl); - - part = rcu_dereference(ptbl->last_lookup); - if (part && sector_in_part(part, sector)) - goto out_unlock; - - for (i = 1; i < ptbl->len; i++) { - part = rcu_dereference(ptbl->part[i]); - if (part && sector_in_part(part, sector)) { - rcu_assign_pointer(ptbl->last_lookup, part); - goto out_unlock; - } - } - - part = disk->part0; -out_unlock: - rcu_read_unlock(); - return part; -} - /** * disk_has_partitions * @disk: gendisk of interest From patchwork Sun Jan 24 10:02:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12042209 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_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 8DC90C433DB for ; Sun, 24 Jan 2021 10:07:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5E09922AAA for ; Sun, 24 Jan 2021 10:07:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726780AbhAXKHd (ORCPT ); Sun, 24 Jan 2021 05:07:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47776 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726781AbhAXKGu (ORCPT ); Sun, 24 Jan 2021 05:06:50 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0DC0FC06178A; Sun, 24 Jan 2021 02:05:58 -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: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=9dvHhrrno1DX55m574Oz4o3Hcha8MLLAL2ubC+yKuJ4=; b=PWPcZ0yPsTcGtoe0lFSHoF+YWQ XojI6QaEJk1cpNtrN661jXr42nmqh83efiIVhP0o/PF9e0fbd8151qw59YHqB95YU6oNEUnsmfkGD HAMJfyJpfPwY8TRCe4mk4rQxHSwMsWleX4bBqJqP6C09Cmbt7VHWDZHLNAXmPacpKCLyAaPKV/3TQ AL0ae4WRbeNzllRAs4+u7EPw0jYbfJjaDkp0zH/8+CfyL9ExYIJl+d1SnZdMelnWOktIj8O6oQQxa 9Ou2ITda+N3mAhMi/rkM7n1hoQqMW7RxrcqklOpp9TI8zSQvbc/b8LODT49rI1YrKnr4ndP3gEDsR VLX2HQtg==; Received: from [2001:4bb8:188:1954:a3b3:627f:702b:2136] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1l3cHI-002qAG-D5; Sun, 24 Jan 2021 10:05:53 +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: [PATCH 08/10] block: add a disk_uevent helper Date: Sun, 24 Jan 2021 11:02:39 +0100 Message-Id: <20210124100241.1167849-9-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210124100241.1167849-1-hch@lst.de> References: <20210124100241.1167849-1-hch@lst.de> MIME-Version: 1.0 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-block@vger.kernel.org Add a helper to call kobject_uevent for the disk and all partitions, and unexport the disk_part_iter_* helpers that are now only used in the core block code. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo Reviewed-by: Johannes Thumshirn --- block/genhd.c | 27 ++++++++++++++------------- drivers/s390/block/dasd.c | 26 +++++--------------------- include/linux/genhd.h | 2 ++ 3 files changed, 21 insertions(+), 34 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index e46de616a19e59..7094612c7510a8 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -203,7 +203,6 @@ void disk_part_iter_init(struct disk_part_iter *piter, struct gendisk *disk, rcu_read_unlock(); } -EXPORT_SYMBOL_GPL(disk_part_iter_init); /** * disk_part_iter_next - proceed iterator to the next partition and return it @@ -266,7 +265,6 @@ struct block_device *disk_part_iter_next(struct disk_part_iter *piter) return piter->part; } -EXPORT_SYMBOL_GPL(disk_part_iter_next); /** * disk_part_iter_exit - finish up partition iteration @@ -283,7 +281,6 @@ void disk_part_iter_exit(struct disk_part_iter *piter) bdput(piter->part); piter->part = NULL; } -EXPORT_SYMBOL_GPL(disk_part_iter_exit); /** * disk_has_partitions @@ -555,6 +552,18 @@ static char *bdevt_str(dev_t devt, char *buf) return buf; } +void disk_uevent(struct gendisk *disk, enum kobject_action action) +{ + struct disk_part_iter piter; + struct block_device *part; + + disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0); + while ((part = disk_part_iter_next(&piter))) + kobject_uevent(bdev_kobj(part), action); + disk_part_iter_exit(&piter); +} +EXPORT_SYMBOL_GPL(disk_uevent); + static void disk_scan_partitions(struct gendisk *disk) { struct block_device *bdev; @@ -572,8 +581,6 @@ static void register_disk(struct device *parent, struct gendisk *disk, const struct attribute_group **groups) { struct device *ddev = disk_to_dev(disk); - struct disk_part_iter piter; - struct block_device *part; int err; ddev->parent = parent; @@ -616,15 +623,9 @@ static void register_disk(struct device *parent, struct gendisk *disk, disk_scan_partitions(disk); - /* announce disk after possible partitions are created */ + /* announce the disk and partitions after all partitions are created */ dev_set_uevent_suppress(ddev, 0); - kobject_uevent(&ddev->kobj, KOBJ_ADD); - - /* announce possible partitions */ - disk_part_iter_init(&piter, disk, 0); - while ((part = disk_part_iter_next(&piter))) - kobject_uevent(bdev_kobj(part), KOBJ_ADD); - disk_part_iter_exit(&piter); + disk_uevent(disk, KOBJ_ADD); if (disk->queue->backing_dev_info->dev) { err = sysfs_create_link(&ddev->kobj, diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index c7eb9a10c680d2..28c04a4efa66f2 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -428,23 +428,15 @@ static int dasd_state_unfmt_to_basic(struct dasd_device *device) static int dasd_state_ready_to_online(struct dasd_device * device) { - struct gendisk *disk; - struct disk_part_iter piter; - struct block_device *part; - device->state = DASD_STATE_ONLINE; if (device->block) { dasd_schedule_block_bh(device->block); if ((device->features & DASD_FEATURE_USERAW)) { - disk = device->block->gdp; - kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE); + kobject_uevent(&disk_to_dev(device->block->gdp)->kobj, + KOBJ_CHANGE); return 0; } - disk = device->block->bdev->bd_disk; - disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0); - while ((part = disk_part_iter_next(&piter))) - kobject_uevent(bdev_kobj(part), KOBJ_CHANGE); - disk_part_iter_exit(&piter); + disk_uevent(device->block->bdev->bd_disk, KOBJ_CHANGE); } return 0; } @@ -455,9 +447,6 @@ dasd_state_ready_to_online(struct dasd_device * device) static int dasd_state_online_to_ready(struct dasd_device *device) { int rc; - struct gendisk *disk; - struct disk_part_iter piter; - struct block_device *part; if (device->discipline->online_to_ready) { rc = device->discipline->online_to_ready(device); @@ -466,13 +455,8 @@ static int dasd_state_online_to_ready(struct dasd_device *device) } device->state = DASD_STATE_READY; - if (device->block && !(device->features & DASD_FEATURE_USERAW)) { - disk = device->block->bdev->bd_disk; - disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0); - while ((part = disk_part_iter_next(&piter))) - kobject_uevent(bdev_kobj(part), KOBJ_CHANGE); - disk_part_iter_exit(&piter); - } + if (device->block && !(device->features & DASD_FEATURE_USERAW)) + disk_uevent(device->block->bdev->bd_disk, KOBJ_CHANGE); return 0; } diff --git a/include/linux/genhd.h b/include/linux/genhd.h index a62ccbfac54b48..670eaef0e87622 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -213,6 +213,8 @@ static inline dev_t disk_devt(struct gendisk *disk) return MKDEV(disk->major, disk->first_minor); } +void disk_uevent(struct gendisk *disk, enum kobject_action action); + /* * Smarter partition iterator without context limits. */ From patchwork Sun Jan 24 10:02:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12042211 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_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 8FEDAC433DB for ; Sun, 24 Jan 2021 10:08:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 63613225A9 for ; Sun, 24 Jan 2021 10:08:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726841AbhAXKH5 (ORCPT ); Sun, 24 Jan 2021 05:07:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726793AbhAXKG6 (ORCPT ); Sun, 24 Jan 2021 05:06:58 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 08E61C061573; Sun, 24 Jan 2021 02:06:05 -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: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=/EYk+0P96lR/mC5Sas0GCCBCqytAW3UF4FS5EfHCsd8=; b=tHgzV1Qgpoq+wIM+i7/OFCqeVb AMG4zclGEMAKTAHZY3WwOem5zSbUy6r3io0PIIqV4pb4b4Lo+9XtQFTv2WL8EZhU6W+AtW7XunQab l1IAC7bUoJJqeEZBZQekM8VGbfJKeNhM8bMHuUxBjrudTqDcsW9CATlcTX3nFWiVAPdVZ6UR5ugni +tmAjPT0SMOUEF9vlGJkCPwIQMq3GuZd7b8oUSF2x0H3iNAUXswl9+lb8OspDSXu/+FWJfikFVpsG 7ko98GKzvF/nHFIgPr1x8xai6rjCkr7xoEFF++ACCF8G/XPAaiT+F0QGvj+5bA929d1Z7O0AeuNU4 NzwXF9Ow==; Received: from [2001:4bb8:188:1954:a3b3:627f:702b:2136] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1l3cHK-002qAP-RM; Sun, 24 Jan 2021 10:05:56 +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: [PATCH 09/10] block: remove DISK_PITER_REVERSE Date: Sun, 24 Jan 2021 11:02:40 +0100 Message-Id: <20210124100241.1167849-10-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210124100241.1167849-1-hch@lst.de> References: <20210124100241.1167849-1-hch@lst.de> MIME-Version: 1.0 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-block@vger.kernel.org There is good reason to iterate backwards when deleting all partitions in del_gendisk, just like we don't in blk_drop_partitions. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo --- block/genhd.c | 37 +++++++------------------------------ include/linux/genhd.h | 1 - 2 files changed, 7 insertions(+), 31 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index 7094612c7510a8..1832add5c73849 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -184,24 +184,13 @@ static struct block_device *__disk_get_part(struct gendisk *disk, int partno) void disk_part_iter_init(struct disk_part_iter *piter, struct gendisk *disk, unsigned int flags) { - struct disk_part_tbl *ptbl; - - rcu_read_lock(); - ptbl = rcu_dereference(disk->part_tbl); - piter->disk = disk; piter->part = NULL; - - if (flags & DISK_PITER_REVERSE) - piter->idx = ptbl->len - 1; - else if (flags & (DISK_PITER_INCL_PART0 | DISK_PITER_INCL_EMPTY_PART0)) + if (flags & (DISK_PITER_INCL_PART0 | DISK_PITER_INCL_EMPTY_PART0)) piter->idx = 0; else piter->idx = 1; - piter->flags = flags; - - rcu_read_unlock(); } /** @@ -216,7 +205,6 @@ void disk_part_iter_init(struct disk_part_iter *piter, struct gendisk *disk, struct block_device *disk_part_iter_next(struct disk_part_iter *piter) { struct disk_part_tbl *ptbl; - int inc, end; /* put the last partition */ disk_part_iter_exit(piter); @@ -225,21 +213,8 @@ struct block_device *disk_part_iter_next(struct disk_part_iter *piter) rcu_read_lock(); ptbl = rcu_dereference(piter->disk->part_tbl); - /* determine iteration parameters */ - if (piter->flags & DISK_PITER_REVERSE) { - inc = -1; - if (piter->flags & (DISK_PITER_INCL_PART0 | - DISK_PITER_INCL_EMPTY_PART0)) - end = -1; - else - end = 0; - } else { - inc = 1; - end = ptbl->len; - } - /* iterate to the next partition */ - for (; piter->idx != end; piter->idx += inc) { + for (; piter->idx != ptbl->len; piter->idx += 1) { struct block_device *part; part = rcu_dereference(ptbl->part[piter->idx]); @@ -257,7 +232,10 @@ struct block_device *disk_part_iter_next(struct disk_part_iter *piter) continue; } - piter->idx += inc; + piter->part = bdgrab(part); + if (!piter->part) + continue; + piter->idx += 1; break; } @@ -781,8 +759,7 @@ void del_gendisk(struct gendisk *disk) down_write(&bdev_lookup_sem); /* invalidate stuff */ - disk_part_iter_init(&piter, disk, - DISK_PITER_INCL_EMPTY | DISK_PITER_REVERSE); + disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY); while ((part = disk_part_iter_next(&piter))) { invalidate_partition(part); delete_partition(part); diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 670eaef0e87622..51609133c9a347 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -218,7 +218,6 @@ void disk_uevent(struct gendisk *disk, enum kobject_action action); /* * Smarter partition iterator without context limits. */ -#define DISK_PITER_REVERSE (1 << 0) /* iterate in the reverse direction */ #define DISK_PITER_INCL_EMPTY (1 << 1) /* include 0-sized parts */ #define DISK_PITER_INCL_PART0 (1 << 2) /* include partition 0 */ #define DISK_PITER_INCL_EMPTY_PART0 (1 << 3) /* include empty partition 0 */ From patchwork Sun Jan 24 10:02:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12042213 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_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 19EE3C433E6 for ; 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See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Now that no fast path lookups in the partition table are left, there is no point in micro-optimizing the data structure for it. Just use a bog standard xarray. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo --- block/blk-settings.c | 2 +- block/blk.h | 1 - block/genhd.c | 163 +++------------------------------------- block/partitions/core.c | 31 ++------ include/linux/genhd.h | 18 +---- 5 files changed, 22 insertions(+), 193 deletions(-) diff --git a/block/blk-settings.c b/block/blk-settings.c index 43990b1d148b87..4c974340f1a992 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -865,7 +865,7 @@ void blk_queue_set_zoned(struct gendisk *disk, enum blk_zoned_model model) * we do nothing special as far as the block layer is concerned. */ if (!IS_ENABLED(CONFIG_BLK_DEV_ZONED) || - disk_has_partitions(disk)) + !xa_empty(&disk->part_tbl)) model = BLK_ZONED_NONE; break; case BLK_ZONED_NONE: diff --git a/block/blk.h b/block/blk.h index d965cacc5bdaa1..ab0aaf958553bc 100644 --- a/block/blk.h +++ b/block/blk.h @@ -345,7 +345,6 @@ int bdev_add_partition(struct block_device *bdev, int partno, int bdev_del_partition(struct block_device *bdev, int partno); int bdev_resize_partition(struct block_device *bdev, int partno, sector_t start, sector_t length); -int disk_expand_part_tbl(struct gendisk *disk, int target); int bio_add_hw_page(struct request_queue *q, struct bio *bio, struct page *page, unsigned int len, unsigned int offset, diff --git a/block/genhd.c b/block/genhd.c index 1832add5c73849..d3ef29fbc53639 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -161,15 +161,6 @@ static void part_in_flight_rw(struct block_device *part, inflight[1] = 0; } -static struct block_device *__disk_get_part(struct gendisk *disk, int partno) -{ - struct disk_part_tbl *ptbl = rcu_dereference(disk->part_tbl); - - if (unlikely(partno < 0 || partno >= ptbl->len)) - return NULL; - return rcu_dereference(ptbl->part[partno]); -} - /** * disk_part_iter_init - initialize partition iterator * @piter: iterator to initialize @@ -204,41 +195,26 @@ void disk_part_iter_init(struct disk_part_iter *piter, struct gendisk *disk, */ struct block_device *disk_part_iter_next(struct disk_part_iter *piter) { - struct disk_part_tbl *ptbl; + struct block_device *part; + unsigned long idx; /* put the last partition */ disk_part_iter_exit(piter); - /* get part_tbl */ rcu_read_lock(); - ptbl = rcu_dereference(piter->disk->part_tbl); - - /* iterate to the next partition */ - for (; piter->idx != ptbl->len; piter->idx += 1) { - struct block_device *part; - - part = rcu_dereference(ptbl->part[piter->idx]); - if (!part) - continue; - piter->part = bdgrab(part); - if (!piter->part) - continue; + xa_for_each_start(&piter->disk->part_tbl, idx, part, piter->idx) { if (!bdev_nr_sectors(part) && !(piter->flags & DISK_PITER_INCL_EMPTY) && !(piter->flags & DISK_PITER_INCL_EMPTY_PART0 && - piter->idx == 0)) { - bdput(piter->part); - piter->part = NULL; + piter->idx == 0)) continue; - } piter->part = bdgrab(part); if (!piter->part) continue; - piter->idx += 1; + piter->idx = idx + 1; break; } - rcu_read_unlock(); return piter->part; @@ -260,42 +236,6 @@ void disk_part_iter_exit(struct disk_part_iter *piter) piter->part = NULL; } -/** - * disk_has_partitions - * @disk: gendisk of interest - * - * Walk through the partition table and check if valid partition exists. - * - * CONTEXT: - * Don't care. - * - * RETURNS: - * True if the gendisk has at least one valid non-zero size partition. - * Otherwise false. - */ -bool disk_has_partitions(struct gendisk *disk) -{ - struct disk_part_tbl *ptbl; - int i; - bool ret = false; - - rcu_read_lock(); - ptbl = rcu_dereference(disk->part_tbl); - - /* Iterate partitions skipping the whole device at index 0 */ - for (i = 1; i < ptbl->len; i++) { - if (rcu_dereference(ptbl->part[i])) { - ret = true; - break; - } - } - - rcu_read_unlock(); - - return ret; -} -EXPORT_SYMBOL_GPL(disk_has_partitions); - /* * Can be deleted altogether. Later. * @@ -858,7 +798,7 @@ struct block_device *bdget_disk(struct gendisk *disk, int partno) struct block_device *bdev = NULL; rcu_read_lock(); - bdev = __disk_get_part(disk, partno); + bdev = xa_load(&disk->part_tbl, partno); if (bdev && !bdgrab(bdev)) bdev = NULL; rcu_read_unlock(); @@ -1248,83 +1188,6 @@ static const struct attribute_group *disk_attr_groups[] = { NULL }; -/** - * disk_replace_part_tbl - replace disk->part_tbl in RCU-safe way - * @disk: disk to replace part_tbl for - * @new_ptbl: new part_tbl to install - * - * Replace disk->part_tbl with @new_ptbl in RCU-safe way. The - * original ptbl is freed using RCU callback. - * - * LOCKING: - * Matching bd_mutex locked or the caller is the only user of @disk. - */ -static void disk_replace_part_tbl(struct gendisk *disk, - struct disk_part_tbl *new_ptbl) -{ - struct disk_part_tbl *old_ptbl = - rcu_dereference_protected(disk->part_tbl, 1); - - rcu_assign_pointer(disk->part_tbl, new_ptbl); - - if (old_ptbl) { - rcu_assign_pointer(old_ptbl->last_lookup, NULL); - kfree_rcu(old_ptbl, rcu_head); - } -} - -/** - * disk_expand_part_tbl - expand disk->part_tbl - * @disk: disk to expand part_tbl for - * @partno: expand such that this partno can fit in - * - * Expand disk->part_tbl such that @partno can fit in. disk->part_tbl - * uses RCU to allow unlocked dereferencing for stats and other stuff. - * - * LOCKING: - * Matching bd_mutex locked or the caller is the only user of @disk. - * Might sleep. - * - * RETURNS: - * 0 on success, -errno on failure. - */ -int disk_expand_part_tbl(struct gendisk *disk, int partno) -{ - struct disk_part_tbl *old_ptbl = - rcu_dereference_protected(disk->part_tbl, 1); - struct disk_part_tbl *new_ptbl; - int len = old_ptbl ? old_ptbl->len : 0; - int i, target; - - /* - * check for int overflow, since we can get here from blkpg_ioctl() - * with a user passed 'partno'. - */ - target = partno + 1; - if (target < 0) - return -EINVAL; - - /* disk_max_parts() is zero during initialization, ignore if so */ - if (disk_max_parts(disk) && target > disk_max_parts(disk)) - return -EINVAL; - - if (target <= len) - return 0; - - new_ptbl = kzalloc_node(struct_size(new_ptbl, part, target), GFP_KERNEL, - disk->node_id); - if (!new_ptbl) - return -ENOMEM; - - new_ptbl->len = target; - - for (i = 0; i < len; i++) - rcu_assign_pointer(new_ptbl->part[i], old_ptbl->part[i]); - - disk_replace_part_tbl(disk, new_ptbl); - return 0; -} - /** * disk_release - releases all allocated resources of the gendisk * @dev: the device representing this disk @@ -1348,7 +1211,7 @@ static void disk_release(struct device *dev) blk_free_devt(dev->devt); disk_release_events(disk); kfree(disk->random); - disk_replace_part_tbl(disk, NULL); + xa_destroy(&disk->part_tbl); bdput(disk->part0); if (disk->queue) blk_put_queue(disk->queue); @@ -1501,7 +1364,6 @@ dev_t blk_lookup_devt(const char *name, int partno) struct gendisk *__alloc_disk_node(int minors, int node_id) { struct gendisk *disk; - struct disk_part_tbl *ptbl; if (minors > DISK_MAX_PARTS) { printk(KERN_ERR @@ -1519,11 +1381,9 @@ struct gendisk *__alloc_disk_node(int minors, int node_id) goto out_free_disk; disk->node_id = node_id; - if (disk_expand_part_tbl(disk, 0)) - goto out_bdput; - - ptbl = rcu_dereference_protected(disk->part_tbl, 1); - rcu_assign_pointer(ptbl->part[0], disk->part0); + xa_init(&disk->part_tbl); + if (xa_insert(&disk->part_tbl, 0, disk->part0, GFP_KERNEL)) + goto out_destroy_part_tbl; disk->minors = minors; rand_initialize_disk(disk); @@ -1532,7 +1392,8 @@ struct gendisk *__alloc_disk_node(int minors, int node_id) device_initialize(disk_to_dev(disk)); return disk; -out_bdput: +out_destroy_part_tbl: + xa_destroy(&disk->part_tbl); bdput(disk->part0); out_free_disk: kfree(disk); diff --git a/block/partitions/core.c b/block/partitions/core.c index 168d5906077cfd..b1cdf88f96e236 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -287,13 +287,7 @@ struct device_type part_type = { */ void delete_partition(struct block_device *part) { - struct gendisk *disk = part->bd_disk; - struct disk_part_tbl *ptbl = - rcu_dereference_protected(disk->part_tbl, 1); - - rcu_assign_pointer(ptbl->part[part->bd_partno], NULL); - rcu_assign_pointer(ptbl->last_lookup, NULL); - + xa_erase(&part->bd_disk->part_tbl, part->bd_partno); kobject_put(part->bd_holder_dir); device_del(&part->bd_device); @@ -325,7 +319,6 @@ static struct block_device *add_partition(struct gendisk *disk, int partno, struct device *ddev = disk_to_dev(disk); struct device *pdev; struct block_device *bdev; - struct disk_part_tbl *ptbl; const char *dname; int err; @@ -347,12 +340,7 @@ static struct block_device *add_partition(struct gendisk *disk, int partno, break; } - err = disk_expand_part_tbl(disk, partno); - if (err) - return ERR_PTR(err); - ptbl = rcu_dereference_protected(disk->part_tbl, 1); - - if (ptbl->part[partno]) + if (xa_load(&disk->part_tbl, partno)) return ERR_PTR(-EBUSY); bdev = bdev_alloc(disk, partno); @@ -405,8 +393,10 @@ static struct block_device *add_partition(struct gendisk *disk, int partno, } /* everything is up and running, commence */ + err = xa_insert(&disk->part_tbl, partno, bdev, GFP_KERNEL); + if (err) + goto out_del; bdev_add(bdev, devt); - rcu_assign_pointer(ptbl->part[partno], bdev); /* suppress uevent if the disk suppresses it */ if (!dev_get_uevent_suppress(ddev)) @@ -612,7 +602,7 @@ static bool blk_add_partition(struct gendisk *disk, struct block_device *bdev, int blk_add_partitions(struct gendisk *disk, struct block_device *bdev) { struct parsed_partitions *state; - int ret = -EAGAIN, p, highest; + int ret = -EAGAIN, p; if (!disk_part_scan_enabled(disk)) return 0; @@ -660,15 +650,6 @@ int blk_add_partitions(struct gendisk *disk, struct block_device *bdev) /* tell userspace that the media / partition table may have changed */ kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE); - /* - * Detect the highest partition number and preallocate disk->part_tbl. - * This is an optimization and not strictly necessary. - */ - for (p = 1, highest = 0; p < state->limit; p++) - if (state->parts[p].size) - highest = p; - disk_expand_part_tbl(disk, highest); - for (p = 1; p < state->limit; p++) if (!blk_add_partition(disk, bdev, state, p)) goto out_free_state; diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 51609133c9a347..f364619092cca0 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -32,6 +32,7 @@ extern struct class block_class; #include #include #include +#include #define PARTITION_META_INFO_VOLNAMELTH 64 /* @@ -116,13 +117,6 @@ enum { DISK_EVENT_FLAG_UEVENT = 1 << 1, }; -struct disk_part_tbl { - struct rcu_head rcu_head; - int len; - struct block_device __rcu *last_lookup; - struct block_device __rcu *part[]; -}; - struct disk_events; struct badblocks; @@ -148,12 +142,7 @@ struct gendisk { unsigned short events; /* supported events */ unsigned short event_flags; /* flags related to event processing */ - /* Array of pointers to partitions indexed by partno. - * Protected with matching bdev lock but stat and other - * non-critical accesses use RCU. Always access through - * helpers. - */ - struct disk_part_tbl __rcu *part_tbl; + struct xarray part_tbl; struct block_device *part0; const struct block_device_operations *fops; @@ -225,7 +214,7 @@ void disk_uevent(struct gendisk *disk, enum kobject_action action); struct disk_part_iter { struct gendisk *disk; struct block_device *part; - int idx; + unsigned long idx; unsigned int flags; }; @@ -233,7 +222,6 @@ extern void disk_part_iter_init(struct disk_part_iter *piter, struct gendisk *disk, unsigned int flags); struct block_device *disk_part_iter_next(struct disk_part_iter *piter); extern void disk_part_iter_exit(struct disk_part_iter *piter); -extern bool disk_has_partitions(struct gendisk *disk); /* block/genhd.c */ extern void device_add_disk(struct device *parent, struct gendisk *disk,