From patchwork Mon Sep 21 07:19:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 1368092 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-ide-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=casper.20170209 header.b=fSYHFcPs; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BvwnR0ww7z9sTW for ; Mon, 21 Sep 2020 17:20:11 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726495AbgIUHUJ (ORCPT ); Mon, 21 Sep 2020 03:20:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59338 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726297AbgIUHUD (ORCPT ); Mon, 21 Sep 2020 03:20:03 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 57681C0613CE; Mon, 21 Sep 2020 00:20:03 -0700 (PDT) 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=ezfq9/HhvT27qSext7o43eb8FqswuribWTEc7lyTkRU=; b=fSYHFcPs1xBTx6DlCTN+c0UOeW 9H7k/RWEK8Imd0eiA48EYchqL7yNYPMiHKCsGVCNike9dWCd8Trtri0xrUaSxBkBVyR91kWkFBMJP SslT8GEhgCitfbLj8S1wkOXVSko+xuILWy+zENOdi8z7ABVwnxZyBztMC+Vh7nXE/Ovsa2kK5eTbW rcgqLt/aebYwHsQLXZXX4nqeYcNLJ3CudJnCesUM6qNboCepBAZZdf90bSJd4700MmetfjtIQpqzc F6HDqTV+dK3ORWhs3RoEfO2rxovqjq44xjGAS/hsB6GuhKXHtLZb7HEpdZHOmvEWet+2+9N+qm9yy HCVlLMNA==; Received: from p4fdb0c34.dip0.t-ipconnect.de ([79.219.12.52] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKG74-0003EH-OZ; Mon, 21 Sep 2020 07:19:50 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Josef Bacik , Minchan Kim , Stefan Haberland , Jan Hoeppner , Joseph Qi , "Rafael J. Wysocki" , Pavel Machek , Len Brown , Andrew Morton , linux-kernel@vger.kernel.org, nbd@other.debian.org, linux-ide@vger.kernel.org, linux-s390@vger.kernel.org, linux-fsdevel@vger.kernel.org, ocfs2-devel@oss.oracle.com, linux-pm@vger.kernel.org, linux-mm@kvack.org, linux-block@vger.kernel.org Subject: [PATCH 01/14] block: move the NEED_PART_SCAN flag to struct gendisk Date: Mon, 21 Sep 2020 09:19:45 +0200 Message-Id: <20200921071958.307589-2-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200921071958.307589-1-hch@lst.de> References: <20200921071958.307589-1-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-ide@vger.kernel.org We can only scan for partitions on the whole disk, so move the flag from struct block_device to struct gendisk. Signed-off-by: Christoph Hellwig --- block/genhd.c | 4 ++-- drivers/block/nbd.c | 8 ++++---- drivers/ide/ide-gd.c | 2 +- fs/block_dev.c | 7 +++---- include/linux/blk_types.h | 4 +--- include/linux/genhd.h | 2 ++ 6 files changed, 13 insertions(+), 14 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index 9d060e79eb31d8..7b56203c90a303 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -731,7 +731,7 @@ static void register_disk(struct device *parent, struct gendisk *disk, if (!bdev) goto exit; - set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); + set_bit(GD_NEED_PART_SCAN, &disk->state); err = blkdev_get(bdev, FMODE_READ, NULL); if (err < 0) goto exit; @@ -2112,7 +2112,7 @@ bool bdev_check_media_change(struct block_device *bdev) if (__invalidate_device(bdev, true)) pr_warn("VFS: busy inodes on changed media %s\n", bdev->bd_disk->disk_name); - set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); + set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state); return true; } EXPORT_SYMBOL(bdev_check_media_change); diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 15eed210feeff4..2dca0aab0a9a25 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -315,7 +315,7 @@ static void nbd_size_update(struct nbd_device *nbd) bd_set_nr_sectors(bdev, nr_sectors); set_blocksize(bdev, config->blksize); } else - set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); + set_bit(GD_NEED_PART_SCAN, &nbd->disk->state); bdput(bdev); } kobject_uevent(&nbd_to_dev(nbd)->kobj, KOBJ_CHANGE); @@ -1322,7 +1322,7 @@ static int nbd_start_device_ioctl(struct nbd_device *nbd, struct block_device *b return ret; if (max_part) - set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); + set_bit(GD_NEED_PART_SCAN, &nbd->disk->state); mutex_unlock(&nbd->config_lock); ret = wait_event_interruptible(config->recv_wq, atomic_read(&config->recv_threads) == 0); @@ -1500,9 +1500,9 @@ static int nbd_open(struct block_device *bdev, fmode_t mode) refcount_set(&nbd->config_refs, 1); refcount_inc(&nbd->refs); mutex_unlock(&nbd->config_lock); - set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); + set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state); } else if (nbd_disconnected(nbd->config)) { - set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); + set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state); } out: mutex_unlock(&nbd_index_mutex); diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c index 661e2aa9c96784..e2b6c82586ce8b 100644 --- a/drivers/ide/ide-gd.c +++ b/drivers/ide/ide-gd.c @@ -230,7 +230,7 @@ static int ide_gd_open(struct block_device *bdev, fmode_t mode) bdev->bd_disk->disk_name); drive->disk_ops->get_capacity(drive); set_capacity(disk, ide_gd_capacity(drive)); - set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); + set_bit(GD_NEED_PART_SCAN, &disk->state); } else if (drive->dev_flags & IDE_DFLAG_FORMAT_IN_PROGRESS) { ret = -EBUSY; goto out_put_idkp; diff --git a/fs/block_dev.c b/fs/block_dev.c index 0b34955b9e360f..1a9325f4315769 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -910,7 +910,6 @@ struct block_device *bdget(dev_t dev) bdev->bd_super = NULL; bdev->bd_inode = inode; bdev->bd_part_count = 0; - bdev->bd_flags = 0; inode->i_mode = S_IFBLK; inode->i_rdev = dev; inode->i_bdev = bdev; @@ -1385,7 +1384,7 @@ int bdev_disk_changed(struct block_device *bdev, bool invalidate) lockdep_assert_held(&bdev->bd_mutex); - clear_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); + clear_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state); rescan: ret = blk_drop_partitions(bdev); @@ -1509,7 +1508,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder, * The latter is necessary to prevent ghost * partitions on a removed medium. */ - if (test_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags) && + if (test_bit(GD_NEED_PART_SCAN, &disk->state) && (!ret || ret == -ENOMEDIUM)) bdev_disk_changed(bdev, ret == -ENOMEDIUM); @@ -1539,7 +1538,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder, if (bdev->bd_disk->fops->open) ret = bdev->bd_disk->fops->open(bdev, mode); /* the same as first opener case, read comment there */ - if (test_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags) && + if (test_bit(GD_NEED_PART_SCAN, &disk->state) && (!ret || ret == -ENOMEDIUM)) bdev_disk_changed(bdev, ret == -ENOMEDIUM); if (ret) diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 6ffa783e16335e..eb20e28184ab19 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -19,8 +19,6 @@ struct cgroup_subsys_state; typedef void (bio_end_io_t) (struct bio *); struct bio_crypt_ctx; -#define BDEV_NEED_PART_SCAN 0 - struct block_device { dev_t bd_dev; int bd_openers; @@ -39,7 +37,7 @@ struct block_device { struct hd_struct * bd_part; /* number of times partitions within this device have been opened. */ unsigned bd_part_count; - unsigned long bd_flags; + spinlock_t bd_size_lock; /* for bd_inode->i_size updates */ struct gendisk * bd_disk; struct backing_dev_info *bd_bdi; diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 1c97cf84f011a7..38f23d75701379 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -191,6 +191,8 @@ struct gendisk { void *private_data; int flags; + unsigned long state; +#define GD_NEED_PART_SCAN 0 struct rw_semaphore lookup_sem; struct kobject *slave_dir;