On 13 Apr 2026, at 16:41, Matthew Wilcox wrote: > On Mon, Apr 13, 2026 at 03:20:26PM -0400, Zi Yan wrote: >> + /* order-1 is not supported for anonymous THP. */ > > It's also not supported for file folios, right? Or do we just skip > adding order-1 file folios to the deferred split list? Either way,
order <= 1 folios are not added to deferred split list. See deferred_split_folio(). IIUC, we have order-1 file folios but not order-1 anon folios. > we need to correct _something_, whether it's the code or the comment. > >> + if (folio_test_anon(folio) && new_order == 1) >> + return -EINVAL; Best Regards, Yan, Zi
