On Thu, 29 Aug 2024 18:25:43 +0800 Jingxiang Zeng <jingxiangzeng.cas@xxxxxxxxx> wrote: > > @@ -4919,6 +4920,14 @@ static void lru_gen_shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc > if (try_to_shrink_lruvec(lruvec, sc)) > lru_gen_rotate_memcg(lruvec, MEMCG_LRU_YOUNG); > > + /* > + * If too many pages failed to evict due to page being dirty, > + * memory pressure have pushed dirty pages to oldest gen, > + * wake up flusher. > + */ > + if (sc->nr.unqueued_dirty >= sc->nr.taken) > + wakeup_flusher_threads(WB_REASON_VMSCAN); > + Because a) the right domain to processe dirty pages is writeback and b) flusher runs independent of page reclaimer that has nothing to do with WB_REASON_SYNC, feel free to erase WB_REASON_VMSCAN instead of adding it once more.
