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From: Christoph Hellwig <hch@lst.de>
To: Christian Brauner <brauner@kernel.org>
Cc: Zizhi Wo <wozizhi@huawei.com>,
	hch@lst.de, jack@suse.com, axboe@kernel.dk,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	yukuai3@huawei.com, yangerkun@huawei.com
Subject: Re: [bug report] A filesystem abnormal mount issue
Date: Thu, 17 Jul 2025 13:04:10 +0200	[thread overview]
Message-ID: <20250717110410.GA15870@lst.de> (raw)
In-Reply-To: <20250717-friseur-aufrollen-60e89dbd9c89@brauner>

On Thu, Jul 17, 2025 at 11:39:01AM +0200, Christian Brauner wrote:
> As long as you use the new mount api you should pass
> FSCONFIG_CMD_CREATE_EXCL which will refuse to mount if a superblock for
> the device already exists. IOW, it ensure that you cannot silently reuse
> a superblock.
> 
> Other than that I think a blkdev_get_no_open(dev, false) after
> lookup_bdev() should sort the issue out. Christoph?

Or just check for GD_DEAD before the mount proceeds?

  reply	other threads:[~2025-07-17 11:04 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-17  9:11 [bug report] A filesystem abnormal mount issue Zizhi Wo
2025-07-17  9:39 ` Christian Brauner
2025-07-17 11:04   ` Christoph Hellwig [this message]
2025-07-17 11:49     ` Zizhi Wo
2025-07-17 11:48   ` Zizhi Wo

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