Re: [PATCH v2 04/16] overlayfs: Document critical override_creds() operations

[Miklos Szeredi]

On Thu, 22 Aug 2024 at 03:25, Vinicius Costa Gomes
<vinicius.gomes@xxxxxxxxx> wrote:
>
> Add a comment to these operations that cannot use the _light version
> of override_creds()/revert_creds(), because during the critical
> section the struct cred .usage counter might be modified.

Why is it a problem if the usage counter is modified?  Why is the
counter modified in each of these cases?

Thanks,
Miklos