[PATCH] mm/memcg: swappiness should between 0 and 100

Wanpeng Li
2012-07-06T04:52:30Z

From: Wanpeng Li <liwp@linux.vnet.ibm.com>

Signed-off-by: Wanpeng Li <liwp.linux@gmail.com>
---
mm/memcontrol.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 5e4d1ab..69a7d45 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4176,7 +4176,7 @@ static int mem_cgroup_swappiness_write(struct cgroup *cgrp, struct cftype *cft,
struct mem_cgroup *memcg = mem_cgroup_from_cont(cgrp);
struct mem_cgroup *parent;

- if (val > 100)
+ if (val > 100 || val < 0)
return -EINVAL;

if (cgrp->parent == NULL)
--
1.7.5.4