On Tue, Jan 17, 2023 at 8:13 PM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > On Tue, 17 Jan 2023 20:46:17 +0000 Pasha Tatashin <pasha.tatashin@xxxxxxxxxx> wrote: > > > page_ext must be initialized after all struct pages are initialized. > > Therefore, page_ext is initialized after page_alloc_init_late(), and > > can optionally be initialized earlier via early_page_ext kernel > > parameter which as a side effect also disables deferred struct pages. > > > > Allow to automatically init page_ext early when there are no deferred > > struct pages in order to be able to use page_ext during kernel boot > > and track for example page allocations early. > > Compilation blows up with CONFIG_PAGE_EXTENSION=n. I did Thanks, I will update the patch and send it soon. Pasha
