On 1/14/2023 2:13 AM, Matthew Wilcox wrote: > 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? Yes. The real benefit this patch brings could be very minor. I will try to get some performance data against this patch. Thanks. Regards Yin, Fengwei