I wonder this should go stable...
==
>From e2565de1c764057b75b4d9a1674d163b6c873cdd Mon Sep 17 00:00:00 2001
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Date: Thu, 9 Jun 2011 09:54:32 +0900
Subject: [PATCH 2/2] Fix softlimit wrong check of noswap
Now, hierarchical reclaim doesn't make swap if memory's limit is
equal to mem+swap limit. Because if reclaim does swap-out,
it still hits mem+swap limit and there will be no progress.
WHEN HITTING HARD LIMIT.
When it comes to softlimit, it works for kswapd. noswap is nonsense.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
---
mm/memcontrol.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 3baddcb..06825be 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1663,7 +1663,7 @@ static int mem_cgroup_hierarchical_reclaim(struct mem_cgroup *root_mem,
excess = res_counter_soft_limit_excess(&root_mem->res) >> PAGE_SHIFT;
/* If memsw_is_minimum==1, swap-out is of-no-use. */
- if (root_mem->memsw_is_minimum)
+ if (!check_soft && root_mem->memsw_is_minimum)
noswap = true;
while (1) {
--
1.7.4.1
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxxx For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>