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Message-Id: <20091103001211.8866.A69D9226@jp.fujitsu.com>
Date: Tue, 3 Nov 2009 00:35:30 +0900 (JST)
From: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To: Minchan Kim <minchan.kim@...il.com>
Cc: kosaki.motohiro@...fujitsu.com, "Rafael J. Wysocki" <rjw@...k.pl>,
Rik van Riel <riel@...hat.com>,
LKML <linux-kernel@...r.kernel.org>,
linux-mm <linux-mm@...ck.org>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCHv2 1/5] vmscan: separate sc.swap_cluster_max and sc.nr_max_reclaim
Hi
> > @@ -1932,6 +1938,7 @@ static unsigned long balance_pgdat(pg_data_t *pgdat, int order)
> > .may_unmap = 1,
> > .may_swap = 1,
> >
> .swap_cluster_max = SWAP_CLUSTER_MAX,
> Or add comment in here.
>
> 'kswapd doesn't want to be bailed out while reclaim.'
OK, reasonable.
How about this?
---
mm/vmscan.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 7fb3435..84e4da0 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1930,6 +1930,10 @@ static unsigned long balance_pgdat(pg_data_t *pgdat, int order)
.gfp_mask = GFP_KERNEL,
.may_unmap = 1,
.may_swap = 1,
+ /*
+ * kswapd doesn't want to be bailed out while reclaim. because
+ * we want to put equal scanning pressure on each zone.
+ */
.nr_to_reclaim = ULONG_MAX,
.swappiness = vm_swappiness,
.order = order,
--
1.6.2.5
--
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