On Mon, Sep 06, 2021 at 08:59:17PM +0800, Yu Xu wrote:

Hi, we also reproduce such bug recently, and have sent out our patch[1].

In addition, another issue related with xfs and file THP is also
fixed[2].

Looking forward to reviews.

[1]https://patchwork.kernel.org/project/linux-mm/patch/20210906121200.57905-2-rongwei.wang@linux.alibaba.com/
[2]https://patchwork.kernel.org/project/linux-mm/patch/20210906121200.57905-3-rongwei.wang@linux.alibaba.com/

I had a quick look, and there are some problems with both patches.
I don't have time to do a detailed review; as I said I'm on holiday.
I'll be back in two weeks.