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Tue, 24 Nov 2020 13:29:04 +0000 (UTC) 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=NQmGHAp8ccIKeWKzHSDEWMgq45K7twbBhC04AX3u2zo=; b=LD3aUh6zWx06zp1Z5Hd2CQ/dQG DfvGBwpoMcvO7Yz8mgjMzoezBV5tVQdN5HpA41kDsI15KL3v6qNkNWXDuxQX3QIXARr7UOFFet4ML 7s0d/Mewr7Aa6NcLrs5z4wtNOmHCSa4T8JZE1yYgO0sHZb7exqUu8c/bWLVQM+oiT8/2uMRSn07yp GBsPonmOh8TQgUX3qfkRgVQdWa/7j6CQ1OofbIBkl68FUN7k2RGQoRhOsk2OYb2KW7C8bXP9GwX/I Y5UgK6gcqHputfdO8FvgBOq1pLnrJAa+D8ZbFcDaPxXceBBrzkMPjCFAIwNFVOftQy/pkuYdClKgM JpNXfQvg==; Received: from [2001:4bb8:180:5443:c70:4a89:bc61:3] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1khYNI-0006fd-9V; Tue, 24 Nov 2020 13:28:52 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Tejun Heo , Josef Bacik , Konrad Rzeszutek Wilk , Coly Li , Mike Snitzer , Greg Kroah-Hartman , Jan Kara , Johannes Thumshirn , dm-devel@redhat.com, Richard Weinberger , Jan Kara , linux-block@vger.kernel.org, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 34/45] block: move holder_dir to struct block_device Date: Tue, 24 Nov 2020 14:27:40 +0100 Message-Id: <20201124132751.3747337-35-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201124132751.3747337-1-hch@lst.de> References: <20201124132751.3747337-1-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 Move the holder_dir field to struct block_device in preparation for kill struct hd_struct. Signed-off-by: Christoph Hellwig --- block/genhd.c | 5 +++-- block/partitions/core.c | 8 ++++---- fs/block_dev.c | 11 +++++------ include/linux/blk_types.h | 1 + include/linux/genhd.h | 1 - 5 files changed, 13 insertions(+), 13 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index 20c7bf6d091e94..a991f0122e53d8 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -671,7 +671,8 @@ static void register_disk(struct device *parent, struct gendisk *disk, */ pm_runtime_set_memalloc_noio(ddev, true); - disk->part0.holder_dir = kobject_create_and_add("holders", &ddev->kobj); + disk->part0.bdev->bd_holder_dir = + kobject_create_and_add("holders", &ddev->kobj); disk->slave_dir = kobject_create_and_add("slaves", &ddev->kobj); if (disk->flags & GENHD_FL_HIDDEN) { @@ -871,7 +872,7 @@ void del_gendisk(struct gendisk *disk) blk_unregister_queue(disk); - kobject_put(disk->part0.holder_dir); + kobject_put(disk->part0.bdev->bd_holder_dir); kobject_put(disk->slave_dir); part_stat_set_all(&disk->part0, 0); diff --git a/block/partitions/core.c b/block/partitions/core.c index e24673b4cba61f..ff60a14ed4dcdd 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -344,7 +344,7 @@ void delete_partition(struct hd_struct *part) */ get_device(disk_to_dev(disk)); rcu_assign_pointer(ptbl->part[part->partno], NULL); - kobject_put(part->holder_dir); + kobject_put(part->bdev->bd_holder_dir); device_del(part_to_dev(part)); /* @@ -452,8 +452,8 @@ static struct hd_struct *add_partition(struct gendisk *disk, int partno, goto out_put; err = -ENOMEM; - p->holder_dir = kobject_create_and_add("holders", &pdev->kobj); - if (!p->holder_dir) + bdev->bd_holder_dir = kobject_create_and_add("holders", &pdev->kobj); + if (!bdev->bd_holder_dir) goto out_del; dev_set_uevent_suppress(pdev, 0); @@ -487,7 +487,7 @@ static struct hd_struct *add_partition(struct gendisk *disk, int partno, out_remove_file: device_remove_file(pdev, &dev_attr_whole_disk); out_del: - kobject_put(p->holder_dir); + kobject_put(bdev->bd_holder_dir); device_del(pdev); out_put: put_device(pdev); diff --git a/fs/block_dev.c b/fs/block_dev.c index 2393395201aa6c..0b8d6009486643 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1137,7 +1137,7 @@ int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk) WARN_ON_ONCE(!bdev->bd_holder); /* FIXME: remove the following once add_disk() handles errors */ - if (WARN_ON(!disk->slave_dir || !bdev->bd_part->holder_dir)) + if (WARN_ON(!disk->slave_dir || !bdev->bd_holder_dir)) goto out_unlock; holder = bd_find_holder_disk(bdev, disk); @@ -1160,14 +1160,14 @@ int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk) if (ret) goto out_free; - ret = add_symlink(bdev->bd_part->holder_dir, &disk_to_dev(disk)->kobj); + ret = add_symlink(bdev->bd_holder_dir, &disk_to_dev(disk)->kobj); if (ret) goto out_del; /* * bdev could be deleted beneath us which would implicitly destroy * the holder directory. Hold on to it. */ - kobject_get(bdev->bd_part->holder_dir); + kobject_get(bdev->bd_holder_dir); list_add(&holder->list, &bdev->bd_holder_disks); goto out_unlock; @@ -1202,9 +1202,8 @@ void bd_unlink_disk_holder(struct block_device *bdev, struct gendisk *disk) if (!WARN_ON_ONCE(holder == NULL) && !--holder->refcnt) { del_symlink(disk->slave_dir, bdev_kobj(bdev)); - del_symlink(bdev->bd_part->holder_dir, - &disk_to_dev(disk)->kobj); - kobject_put(bdev->bd_part->holder_dir); + del_symlink(bdev->bd_holder_dir, &disk_to_dev(disk)->kobj); + kobject_put(bdev->bd_holder_dir); list_del_init(&holder->list); kfree(holder); } diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 2f8ede04e5a94c..c0591e52d7d7ce 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -35,6 +35,7 @@ struct block_device { #ifdef CONFIG_SYSFS struct list_head bd_holder_disks; #endif + struct kobject *bd_holder_dir; u8 bd_partno; struct hd_struct * bd_part; /* number of times partitions within this device have been opened. */ diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 1e52f38b719db3..c2a8cf12c5cab5 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -55,7 +55,6 @@ struct hd_struct { struct block_device *bdev; struct device __dev; - struct kobject *holder_dir; int policy, partno; #ifdef CONFIG_FAIL_MAKE_REQUEST int make_it_fail;