Re: [PATCH] fs: fix possible inconsistent mount device

[Christoph Hellwig]

On Sat, Aug 13, 2022 at 02:08:48PM +0800, Yu Kuai wrote:
> From: Yu Kuai <yukuai3@xxxxxxxxxx>
> 
> If device support rename, for example dm, following concurrent scenario
> is possible:

The fix is easy:  don't rename mounted block device, and even
bettersimply don't rename them at all, which is just causing huge
amounts of pain.