From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 BF834C56202 for ; Wed, 18 Nov 2020 08:52:31 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1B1F720719 for ; Wed, 18 Nov 2020 08:52:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1B1F720719 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=tempfail smtp.mailfrom=dm-devel-bounces@redhat.com Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-132-dVGhRhlIMHS8OWydyDISrQ-1; Wed, 18 Nov 2020 03:52:28 -0500 X-MC-Unique: dVGhRhlIMHS8OWydyDISrQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 222891882FBB; Wed, 18 Nov 2020 08:52:23 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id F39326EF52; Wed, 18 Nov 2020 08:52:22 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id C3D6986C0B; Wed, 18 Nov 2020 08:52:22 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 0AI8qFUZ019233 for ; Wed, 18 Nov 2020 03:52:15 -0500 Received: by smtp.corp.redhat.com (Postfix) id 63B431111A47; Wed, 18 Nov 2020 08:52:15 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast02.extmail.prod.ext.rdu2.redhat.com [10.11.55.18]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 601AC1130512 for ; Wed, 18 Nov 2020 08:52:15 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-2.mimecast.com [205.139.110.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 497258007D9 for ; Wed, 18 Nov 2020 08:52:15 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-594-3lj9PXJEMoOPpDEfKRNQOg-1; Wed, 18 Nov 2020 03:52:12 -0500 X-MC-Unique: 3lj9PXJEMoOPpDEfKRNQOg-1 Received: from [2001:4bb8:18c:31ba:32b1:ec66:5459:36a] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kfJ8f-0007o7-Ef; Wed, 18 Nov 2020 08:48:30 +0000 From: Christoph Hellwig To: Jens Axboe Date: Wed, 18 Nov 2020 09:47:56 +0100 Message-Id: <20201118084800.2339180-17-hch@lst.de> In-Reply-To: <20201118084800.2339180-1-hch@lst.de> References: <20201118084800.2339180-1-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 X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Mimecast-Bulk-Signature: yes X-Mimecast-Spam-Signature: bulk X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-loop: dm-devel@redhat.com Cc: linux-bcache@vger.kernel.org, Mike Snitzer , Konrad Rzeszutek Wilk , Richard Weinberger , Josef Bacik , Coly Li , linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, dm-devel@redhat.com, linux-mtd@lists.infradead.org, Jan Kara , Tejun Heo , xen-devel@lists.xenproject.org, linux-mm@kvack.org Subject: [dm-devel] [PATCH 16/20] block: stop using bdget_disk for partition 0 X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit We can just dereference the point in struct gendisk instead. Also remove the now unused export. Signed-off-by: Christoph Hellwig --- block/genhd.c | 1 - drivers/block/nbd.c | 4 +--- drivers/block/xen-blkfront.c | 20 +++++--------------- drivers/block/zram/zram_drv.c | 18 +++--------------- drivers/md/dm.c | 8 +------- drivers/s390/block/dasd_ioctl.c | 5 ++--- 6 files changed, 12 insertions(+), 44 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index a14e2408e3d4e8..ec41d0f18f5ce1 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -907,7 +907,6 @@ struct block_device *bdget_disk(struct gendisk *disk, int partno) return bdev; } -EXPORT_SYMBOL(bdget_disk); /* * print a full list of all partitions - intended for places where the root diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 014683968ce174..92f84ed0ba9eb6 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -1488,12 +1488,10 @@ static int nbd_open(struct block_device *bdev, fmode_t mode) static void nbd_release(struct gendisk *disk, fmode_t mode) { struct nbd_device *nbd = disk->private_data; - struct block_device *bdev = bdget_disk(disk, 0); if (test_bit(NBD_RT_DISCONNECT_ON_CLOSE, &nbd->config->runtime_flags) && - bdev->bd_openers == 0) + disk->part0->bd_openers == 0) nbd_disconnect_and_put(nbd); - bdput(bdev); nbd_config_put(nbd); nbd_put(nbd); diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 79521e33d30ed5..188e0b47534bcf 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -2153,7 +2153,7 @@ static void blkfront_closing(struct blkfront_info *info) } if (info->gd) - bdev = bdget_disk(info->gd, 0); + bdev = bdgrab(info->gd->part0); mutex_unlock(&info->mutex); @@ -2518,7 +2518,7 @@ static int blkfront_remove(struct xenbus_device *xbdev) disk = info->gd; if (disk) - bdev = bdget_disk(disk, 0); + bdev = bdgrab(disk->part0); info->xbdev = NULL; mutex_unlock(&info->mutex); @@ -2595,19 +2595,11 @@ static int blkif_open(struct block_device *bdev, fmode_t mode) static void blkif_release(struct gendisk *disk, fmode_t mode) { struct blkfront_info *info = disk->private_data; - struct block_device *bdev; struct xenbus_device *xbdev; mutex_lock(&blkfront_mutex); - - bdev = bdget_disk(disk, 0); - - if (!bdev) { - WARN(1, "Block device %s yanked out from us!\n", disk->disk_name); + if (disk->part0->bd_openers) goto out_mutex; - } - if (bdev->bd_openers) - goto out; /* * Check if we have been instructed to close. We will have @@ -2619,7 +2611,7 @@ static void blkif_release(struct gendisk *disk, fmode_t mode) if (xbdev && xbdev->state == XenbusStateClosing) { /* pending switch to state closed */ - dev_info(disk_to_dev(bdev->bd_disk), "releasing disk\n"); + dev_info(disk_to_dev(disk), "releasing disk\n"); xlvbd_release_gendisk(info); xenbus_frontend_closed(info->xbdev); } @@ -2628,14 +2620,12 @@ static void blkif_release(struct gendisk *disk, fmode_t mode) if (!xbdev) { /* sudden device removal */ - dev_info(disk_to_dev(bdev->bd_disk), "releasing disk\n"); + dev_info(disk_to_dev(disk), "releasing disk\n"); xlvbd_release_gendisk(info); disk->private_data = NULL; free_info(info); } -out: - bdput(bdev); out_mutex: mutex_unlock(&blkfront_mutex); } diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 01757f9578dcb8..56024905bd242c 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1748,7 +1748,7 @@ static ssize_t reset_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { struct zram *zram = dev_to_zram(dev); - struct block_device *bdev; + struct block_device *bdev = zram->disk->part0; unsigned short do_reset; int ret = 0; @@ -1758,17 +1758,12 @@ static ssize_t reset_store(struct device *dev, if (!do_reset) return -EINVAL; - bdev = bdget_disk(zram->disk, 0); - if (!bdev) - return -ENOMEM; - mutex_lock(&bdev->bd_mutex); if (bdev->bd_openers) ret = -EBUSY; else zram_reset_device(zram); mutex_unlock(&bdev->bd_mutex); - bdput(bdev); return ret ? ret : len; } @@ -1933,15 +1928,8 @@ static int zram_add(void) static int zram_remove(struct zram *zram) { - struct block_device *bdev = bdget_disk(zram->disk, 0); - - if (bdev) { - if (bdev->bd_openers) { - bdput(bdev); - return -EBUSY; - } - bdput(bdev); - } + if (zram->disk->part0->bd_openers) + return -EBUSY; del_gendisk(zram->disk); zram_debugfs_unregister(zram); diff --git a/drivers/md/dm.c b/drivers/md/dm.c index c9438feefe55a3..ec48ccae50dd53 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2375,17 +2375,12 @@ struct dm_table *dm_swap_table(struct mapped_device *md, struct dm_table *table) */ static int lock_fs(struct mapped_device *md) { - struct block_device *bdev; int r; WARN_ON(md->frozen_sb); - bdev = bdget_disk(md->disk, 0); - if (!bdev) - return -ENOMEM; - md->frozen_sb = freeze_bdev(bdev); + md->frozen_sb = freeze_bdev(md->disk->part0); if (IS_ERR(md->frozen_sb)) { - bdput(bdev); r = PTR_ERR(md->frozen_sb); md->frozen_sb = NULL; return r; @@ -2402,7 +2397,6 @@ static void unlock_fs(struct mapped_device *md) return; thaw_bdev(md->frozen_sb->s_bdev, md->frozen_sb); - bdput(md->frozen_sb->s_bdev); md->frozen_sb = NULL; clear_bit(DMF_FROZEN, &md->flags); } diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c index 304eba1acf163c..9f642440894655 100644 --- a/drivers/s390/block/dasd_ioctl.c +++ b/drivers/s390/block/dasd_ioctl.c @@ -220,9 +220,8 @@ dasd_format(struct dasd_block *block, struct format_data_t *fdata) * enabling the device later. */ if (fdata->start_unit == 0) { - struct block_device *bdev = bdget_disk(block->gdp, 0); - bdev->bd_inode->i_blkbits = blksize_bits(fdata->blksize); - bdput(bdev); + block->gdp->part0->bd_inode->i_blkbits = + blksize_bits(fdata->blksize); } rc = base->discipline->format_device(base, fdata, 1); -- 2.29.2 -- dm-devel mailing list dm-devel@redhat.com https://www.redhat.com/mailman/listinfo/dm-devel