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From: Zizhi Wo <wozizhi@huawei.com>
To: Christoph Hellwig <hch@lst.de>, Christian Brauner <brauner@kernel.org>
Cc: <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 19:49:54 +0800	[thread overview]
Message-ID: <7337feb6-73ac-47b8-9a74-d579167ba438@huawei.com> (raw)
In-Reply-To: <20250717110410.GA15870@lst.de>



在 2025/7/17 19:04, Christoph Hellwig 写道:
> 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?


This is indeed concise and effective enough. Thank you for your
suggestion.

Thanks,
Zizhi Wo

  reply	other threads:[~2025-07-17 11:50 UTC|newest]

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

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