Re: [PATCH v2 17/36] fs: add ksys_chroot() helper; remove-in kernel calls to sys_chroot()

[Christoph Hellwig]

> > +       ksys_chroot(".");
> >         complete(&setup_done);
> >         while (1) {
> >                 spin_lock(&req_lock);
> 
> Could this be done using kern_path()/set_fs_root() instead so we
> avoid the __user pointer?

Agreed.  Especially as we don't need any of the permission checks here.