On Fri, Jul 21, 2023 at 3:41 AM Yin Fengwei <fengwei.yin@xxxxxxxxx> wrote: > > Current madvise_cold_or_pageout_pte_range() always tries to split > large folio. > > Avoid trying to split large folio always by: > - if large folio is in the request range, don't split it. Leave > to page reclaim to decide whether the large folio needs be > split. > - if large folio crosses boundaries of request range, skip it if > it's page cache. Try to split it if it's anonymous large folio. > If failed to split it, just skip it. > > Invoke folio_referenced() to clear the A bit for large folio. As it > will acquire pte lock, just do it after release pte lock. > > Signed-off-by: Yin Fengwei <fengwei.yin@xxxxxxxxx> I currently don't have the bandwidth to look at this one. Minchan, can you please take a look? Thanks.
