On Tue, 30 Sep 2025 12:30:03 +0200
Boris Brezillon <[email protected]> wrote:
> > +unsigned long drm_gem_get_unmapped_area(struct file *filp, unsigned long
> > uaddr,
> > + unsigned long len, unsigned long pgoff,
> > + unsigned long flags)
> > +{
> > +#ifdef CONFIG_TRANSPARENT_HUGEPAGE
> > + struct drm_gem_object *obj;
> > + unsigned long ret;
> > +
> > + obj = drm_gem_object_lookup_from_offset(filp, pgoff, len >> PAGE_SHIFT);
> > + if (IS_ERR(obj))
>
> Is this supposed to happen? If not, I'd be tempted to add a
> WARN_ON_ONCE().
Taking that back. I think you need it for non-GEM backed mappings, like
userland IOMEM mappings.
>
> > + return mm_get_unmapped_area(current->mm, filp, uaddr, len, 0,
> > + flags);
> > +
