From: Jesper Dangaard Brouer <bro...@redhat.com> > The page_pool_request_shutdown() API return indication if there are any > in-flight frames/pages, to know when it is safe to call > page_pool_free(), which you are also missing a call to. > > This page_pool_request_shutdown() is only intended to be called from > xdp_rxq_info_unreg() code, that handles and schedule a work queue if it > need to wait for in-flight frames/pages.
So you mean I can't call it or I should implement the same deferred work ? Notice that in stmmac case there will be no in-flight frames/pages because we free them all before calling this ...