On Thu, Feb 9, 2012 at 7:36 PM, Johannes Stezenbach <js@xxxxxxxxx> wrote:
> On Wed, Feb 08, 2012 at 08:34:14PM +0800, Hillf Danton wrote:
>> And I want to ask kswapd to do less work, the attached diff is
>> based on 3.2.5, mind to test it with CONFIG_DEBUG_OBJECTS enabled?
>
> Sorry, for slow reply. The patch does not apply to 3.2.4
> (3.2.5 only has the ASPM change which I don't want to
> try atm). Is the patch below correct?
>
It is fine;)
Thanks
Hillf
> I'll let this run for a while and will report back.
>
> Thanks
> Johannes
>
>
> --- mm/vmscan.c.orig 2012-02-03 21:39:51.000000000 +0100
> +++ mm/vmscan.c 2012-02-09 12:30:42.000000000 +0100
> @@ -2067,8 +2067,11 @@ restart:
> * with multiple processes reclaiming pages, the total
> * freeing target can get unreasonably large.
> */
> - if (nr_reclaimed >= nr_to_reclaim && priority < DEF_PRIORITY)
> + if (nr_reclaimed >= nr_to_reclaim) {
> + nr_to_reclaim = 0;
> break;
> + }
> + nr_to_reclaim -= nr_reclaimed;
> }
> blk_finish_plug(&plug);
> sc->nr_reclaimed += nr_reclaimed;
> @@ -2535,12 +2538,12 @@ static unsigned long balance_pgdat(pg_da
> * we want to put equal scanning pressure on each zone.
> */
> .nr_to_reclaim = ULONG_MAX,
> - .order = order,
> .mem_cgroup = NULL,
> };
> struct shrink_control shrink = {
> .gfp_mask = sc.gfp_mask,
> };
> + sc.order = order = 0;
> loop_again:
> total_scanned = 0;
> sc.nr_reclaimed = 0;
--
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