lkml.org 
[lkml]   [2009]   [Apr]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] vmscan: evict use-once pages first (v2)
From
Hi

Looks good than previous version. but I have one question.

> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index eac9577..4471dcb 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -1489,6 +1489,18 @@ static void shrink_zone(int priority, struct zone *zone,
>                        nr[l] = scan;
>        }
>
> +       /*
> +        * 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.
> +        *
> +        * Once we get to that situation, protect the system's working
> +        * set from being evicted by disabling active file page aging.
> +        * The logic in get_scan_ratio protects anonymous pages.
> +        */
> +       if (nr[LRU_INACTIVE_FILE] > nr[LRU_ACTIVE_FILE])
> +               nr[LRU_ACTIVE_FILE] = 0;
> +
>        while (nr[LRU_INACTIVE_ANON] || nr[LRU_ACTIVE_FILE] ||
>                                        nr[LRU_INACTIVE_FILE]) {
>                for_each_evictable_lru(l) {

we handle active_anon vs inactive_anon ratio by shrink_list().
Why do you insert this logic insert shrink_zone() ?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2009-04-29 18:11    [W:0.380 / U:0.556 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site