[PATCH 19/19] TuxOnIce: Don't try to wake kswapd if the freezer is on.

[Nigel Cunningham]

If a process gets into wakeup_kswapd while other processes are frozen,
we don't want it to actually wake kswapd (memory pressure may be caused
by TuxOnIce trying to free memory).

Signed-off-by: Nigel Cunningham <nigel@xxxxxxxxxxxx>
---
 mm/vmscan.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 5fa3eda..ae44189 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2034,6 +2034,9 @@ void wakeup_kswapd(struct zone *zone, int order)
 	if (!populated_zone(zone))
 		return;
 
+	if (freezer_is_on())
+		return;
+
 	pgdat = zone->zone_pgdat;
 	if (zone_watermark_ok(zone, order, zone->pages_low, 0, 0))
 		return;
-- 
1.5.6.3

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