Re: [PATCH vfs.all 15/26] s390/dasd: use bdev api in dasd_format()

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To: Stefan Haberland <sth@xxxxxxxxxxxxx>
Subject: Re: [PATCH vfs.all 15/26] s390/dasd: use bdev api in dasd_format()
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Tue, 30 Apr 2024 01:30:36 +0100
Cc: linux-s390@xxxxxxxxxxxxxxx, jack@xxxxxxx, hch@xxxxxx, brauner@xxxxxxxxxx, axboe@xxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, yi.zhang@xxxxxxxxxx, yangerkun@xxxxxxxxxx, yukuai3@xxxxxxxxxx, Yu Kuai <yukuai1@xxxxxxxxxxxxxxx>, Eduard Shishkin <edward6@xxxxxxxxxxxxx>, Alexander Gordeev <agordeev@xxxxxxxxxxxxx>, Jan Hoeppner <hoeppner@xxxxxxxxxxxxx>
In-reply-to: <dc4325fb-d723-4d9f-adb7-7ee65a195231@linux.ibm.com>

On Mon, Apr 29, 2024 at 04:41:19PM +0200, Stefan Haberland wrote:

> The dasdfmt tool checks if the disk is actually in use and refuses to
> work on an 'in use' DASD.
> So for example a partition that was in use has to be unmounted first.

Hmm...  How is that check done?  Does it open device exclusive?

Follow-Ups:
- Re: [PATCH vfs.all 15/26] s390/dasd: use bdev api in dasd_format()
  - From: Stefan Haberland

References:
- [PATCH vfs.all 00/26] fs & block: remove bdev->bd_inode
  - From: Yu Kuai
- [PATCH vfs.all 15/26] s390/dasd: use bdev api in dasd_format()
  - From: Yu Kuai
- Re: [PATCH vfs.all 15/26] s390/dasd: use bdev api in dasd_format()
  - From: Al Viro
- Re: [PATCH vfs.all 15/26] s390/dasd: use bdev api in dasd_format()
  - From: Alexander Gordeev
- Re: [PATCH vfs.all 15/26] s390/dasd: use bdev api in dasd_format()
  - From: Stefan Haberland
- Re: [PATCH vfs.all 15/26] s390/dasd: use bdev api in dasd_format()
  - From: Al Viro
- Re: [PATCH vfs.all 15/26] s390/dasd: use bdev api in dasd_format()
  - From: Al Viro
- Re: [PATCH vfs.all 15/26] s390/dasd: use bdev api in dasd_format()
  - From: Stefan Haberland

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