[-mm][PATCH][resend] split-lru-memcg page reclaim active anon fixv2

[KAMEZAWA Hiroyuki]

Under memcg, active anon tend not to go to inactive anon under split-lru vmscan.
Because this check was lacked in split-lru.
Without this, we see OOM under memcg too often.

This patch is a fix agaisnt
vmscan-second-chance-replacement-for-anonymous-pages.patch


Changelog: v1 -> v2:
 - clean up and avoid adding "else".

Signed-off-by:KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Acked-by: Rik van Riel <riel@xxxxxxxxxx>

 mm/vmscan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.26-rc8-mm1/mm/vmscan.c
===================================================================
--- linux-2.6.26-rc8-mm1.orig/mm/vmscan.c
+++ linux-2.6.26-rc8-mm1/mm/vmscan.c
@@ -1499,7 +1499,7 @@ static unsigned long shrink_zone(int pri
 	 * Even if we did not try to evict anon pages at all, we want to
 	 * rebalance the anon lru active/inactive ratio.
 	 */
-	if (scan_global_lru(sc) && inactive_anon_is_low(zone))
+	if (!scan_global_lru(sc) || inactive_anon_is_low(zone))
 		shrink_active_list(SWAP_CLUSTER_MAX, zone, sc, priority, 0);
 
 	throttle_vm_writeout(sc->gfp_mask);

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/