On Mon, Jun 08, 2020 at 01:53:23PM +0200, David Hildenbrand wrote: > > @@ -131,6 +131,7 @@ struct page_ext *lookup_page_ext(const struct page *page) > > MAX_ORDER_NR_PAGES); > > return get_entry(base, index); > > } > > +EXPORT_SYMBOL_GPL(lookup_page_ext); > > > > static int __init alloc_node_page_ext(int nid) > > { > > > > I've been told to always smuggle new EXPORTs into the patch that > actually needs it (and cc relevant people on that patch instead). A separate patch for anything remotely controversial really helps it to stick out, so I think keeping it separate is a very good practice.