Hi,
On 2016-02-11 15:34:04 -0500, Rik van Riel wrote:
> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index eb3dd37ccd7c..0a316c41bf80 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -1928,13 +1928,14 @@ static inline bool inactive_anon_is_low(struct lruvec
> *lruvec)
> */
> static bool inactive_file_is_low(struct lruvec *lruvec)
> {
> + struct zone *zone = lruvec_zone(lruvec);
> unsigned long inactive;
> unsigned long active;
>
> inactive = get_lru_size(lruvec, LRU_INACTIVE_FILE);
> active = get_lru_size(lruvec, LRU_ACTIVE_FILE);
>
> - return active > inactive;
> + return inactive * zone->inactive_ratio < active;
> }
Oh, it looks to me like pat of inactive_file_is_low()'s description:
*
* When the system is doing streaming IO, memory pressure here
* ensures that active file pages get deactivated, until more
* than half of the file pages are on the inactive list.
*
Would need updating with this patch.
Regards,
Andres Freund
