在 2020/6/4 上午7:03, Andrew Morton 写道: > > + /* XXX: Move to lru_cache_add() when it supports new vs putback */ Hi Hannes, Sorry for a bit lost, would you like to explain a bit more of your idea here? > + spin_lock_irq(&page_pgdat(page)->lru_lock); > + lru_note_cost(page); > + spin_unlock_irq(&page_pgdat(page)->lru_lock); > + What could we see here w/o the lru_lock? Thanks Alex
