[External] [PATCH] erofs: check the uniqueness of fsid in shared domain in advance

[Gao Xiang]

Hi Tao,

On Fri, Nov 25, 2022 at 04:39:47PM +0800, Hou Tao wrote:
> Hi,
> 
> On 11/25/2022 4:25 PM, Jia Zhu wrote:
> > Hi Tao,
> > We've noticed this warning during development. It seems not a bug, so
> > I ignored that.
> > Many thanks for cacthing and clearing up the annoying warning.
> Yes, it is not a bug. The duplicated mount will fail with -EEXIST even without
> the patch. But it is a bit scary to see such warning in dmesg, so just fix it.

Thanks for the catch.

IMO, a WARN is indeed a bug, we cannot rely on this.

Overall the patch itself looks good to me as well, please help Cc LKML
mailing list as well in v2...

Thanks,
Gao Xiang