On Tue, Aug 20, 2019 at 05:48:37PM +0800, Alex Shi wrote:
> @@ -159,7 +159,7 @@ static inline bool free_area_empty(struct free_area *area, int migratetype)
> struct pglist_data;
>
> /*
> - * zone->lock and the zone lru_lock are two of the hottest locks in the kernel.
> + * zone->lock and the lru_lock are two of the hottest locks in the kernel.
> * So add a wild amount of padding here to ensure that they fall into separate
> * cachelines. There are very few zone structures in the machine, so space
> * consumption is not a concern here.
But after this patch series, the lru lock is no longer stored in the zone.
So this comment makes no sense.
> @@ -295,7 +295,7 @@ struct zone_reclaim_stat {
>
> struct lruvec {
> struct list_head lists[NR_LRU_LISTS];
> - /* move lru_lock to per lruvec for memcg */
> + /* perf lruvec lru_lock for memcg */
What does the word 'perf' mean here?
