Re: [PATCH v2 07/22] mm: Provide a means of invalidation without using launder_folio

[Christoph Hellwig]

> +     unmap_mapping_pages(mapping, first, nr, false);

> +}
> +EXPORT_SYMBOL(filemap_invalidate_inode);

unmap_mapping_pages is an EXPORT_SYMBOL_GPL, pleas keep that in
this in thin wrapper.