From: Minchan Kim <minchan.kim@gmail.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Ying Han <yinghan@google.com>, Rik van Riel <riel@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Venkatesh Pallipadi <venki@google.com>,
Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH] vmscan: prevent background aging of anon page in no swap system
Date: Tue, 31 Aug 2010 10:10:17 +0900 [thread overview]
Message-ID: <AANLkTi=NsY9T19rXuBWmeZ3Z2ayA=tHZ1+e=cEXuKVAt@mail.gmail.com> (raw)
In-Reply-To: <20100831095542.87CA.A69D9226@jp.fujitsu.com>
Hi, KOSAKI.
On Tue, Aug 31, 2010 at 9:56 AM, KOSAKI Motohiro
<kosaki.motohiro@jp.fujitsu.com> wrote:
>> diff --git a/mm/vmscan.c b/mm/vmscan.c
>> index 1b145e6..0b8a3ce 100644
>> --- a/mm/vmscan.c
>> +++ b/mm/vmscan.c
>> @@ -1747,7 +1747,7 @@ static void shrink_zone(int priority, struct zone *zone,
>> * Even if we did not try to evict anon pages at all, we want to
>> * rebalance the anon lru active/inactive ratio.
>> */
>> - if (inactive_anon_is_low(zone, sc) && nr_swap_pages > 0)
>> + if (nr_swap_pges > 0 && inactive_anon_is_low(zone, sc))
>
> Sorry, I don't find any difference. What is your intention?
>
My intention is that smart gcc can compile out inactive_anon_is_low
call in case of non swap configurable system.
--
Kind regards,
Minchan Kim
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next prev parent reply other threads:[~2010-08-31 1:10 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-29 15:43 Minchan Kim
2010-08-29 15:49 ` Rik van Riel
2010-08-29 17:45 ` Ying Han
2010-08-29 20:03 ` Rik van Riel
2010-08-29 20:56 ` Ying Han
2010-08-29 21:23 ` Ying Han
2010-08-29 22:26 ` Rik van Riel
2010-08-30 0:18 ` Minchan Kim
2010-08-30 5:40 ` Ying Han
2010-08-30 6:16 ` Minchan Kim
2010-08-31 0:56 ` KOSAKI Motohiro
2010-08-31 1:10 ` Minchan Kim [this message]
2010-08-31 1:18 ` KOSAKI Motohiro
2010-08-31 1:36 ` Minchan Kim
2010-08-31 1:41 ` KOSAKI Motohiro
2010-08-31 0:56 ` KOSAKI Motohiro
2010-08-31 1:23 ` Minchan Kim
2010-08-31 1:38 ` KOSAKI Motohiro
2010-08-31 2:02 ` Minchan Kim
2010-08-31 2:09 ` KOSAKI Motohiro
2010-08-31 3:47 ` Minchan Kim
2010-08-31 2:30 ` Rik van Riel
2010-08-31 3:46 ` Minchan Kim
2010-09-03 21:06 ` Andrew Morton
2010-09-03 21:23 ` Rik van Riel
2010-09-03 21:45 ` Ying Han
2010-09-03 21:47 ` Ying Han
2010-09-03 21:56 ` Andrew Morton
2010-09-04 1:12 ` Venkatesh Pallipadi
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