在 2019/11/19 上午10:10, Daniel Jordan 写道: >> - if (pgdat) >> - spin_unlock_irqrestore(&pgdat->lru_lock, flags); >> + >> release_pages(pvec->pages, pvec->nr); >> pagevec_reinit(pvec); >> } > Why can't you keep the locking pattern where we only drop and reacquire if the > lruvec changes? It'd save a lot of locks and unlocks if most pages were from > the same memcg and node, or the memory controller were unused. > Good catching! This issue will be fixed in the next patch which introduce relock_ function. Thanks!
