On Sat, Jan 14, 2023 at 12:35:38AM +0800, Yin Fengwei wrote: > The page fault number can be reduced by batched PTEs population. > The batch size of PTEs population is not allowed to cross: > - page table boundaries > - vma range > - large folio size > - fault_around_bytes I find this patch very interesting. But is it really worth it? Most file-backed page faults are resolved through the ->map_pages() path which is almost always filemap_map_pages(), which does something fairly similar to this already. Do you have any performance numbers?
