On Wed, 14 Aug 2024 17:18:25 +0800 liuye <liuye@xxxxxxxxxx> wrote:
> @@ -1669,10 +1670,12 @@ static unsigned long isolate_lru_folios(unsigned long nr_to_scan,
> nr_pages = folio_nr_pages(folio);
> total_scan += nr_pages;
>
> - if (folio_zonenum(folio) > sc->reclaim_idx ||
> - skip_cma(folio, sc)) {
> + /* Using max_nr_skipped to prevent hard LOCKUP*/
> + if ((max_nr_skipped < SWAP_CLUSTER_MAX_SKIPPED) &&
> + (folio_zonenum(folio) > sc->reclaim_idx || skip_cma(folio, sc))) {
> nr_skipped[folio_zonenum(folio)] += nr_pages;
> move_to = &folios_skipped;
> + max_nr_skipped++;
> goto move;
This hunk is not applicable to current mainline.
