On 2022/4/11 11:17, Matthew Wilcox wrote: > On Mon, Apr 11, 2022 at 09:53:15AM +0800, Miaohe Lin wrote: >> On 2022/4/9 21:44, Matthew Wilcox wrote: >>> On Sat, Apr 09, 2022 at 05:34:54PM +0800, Miaohe Lin wrote: >>>> + nr_reclaimed = shrink_page_list(page_list, pgdat, &sc, &dummy_stat, false); >>>> + while (!list_empty(page_list)) { >>>> + folio = lru_to_folio(page_list); >>>> + list_del(&folio->lru); >>>> + putback_lru_page(&folio->page); >>> >>> folio_putback_lru() >> >> I thought folio_putback_lru is deliberately not to use because there is no caller of folio_putback_lru now. >> But it seems I was wrong. Will do it in next version. > > Looks like all of the uses of it that I mooted during the last merge > window ended up going away. > > https://lore.kernel.org/all/20220204195852.1751729-47-willy@xxxxxxxxxxxxx/ > was obsoleted by commit b109b87050df > > https://lore.kernel.org/all/20220204195852.1751729-48-willy@xxxxxxxxxxxxx/ > and > https://lore.kernel.org/all/20220204195852.1751729-50-willy@xxxxxxxxxxxxx/ > were also obsoleted by Hugh's mlock changes > > I also sent > https://lore.kernel.org/all/YjJJIrENYb1qFHzl@xxxxxxxxxxxxxxxxxxxx/ > > but never quite got it up to submittable quality. I see. This is really a pity. Many thanks for clarifying. :) > > . >