[RFC][PATCH -mmotm 1/4] memcg: don't trigger oom at page migration

From: Daisuke Nishimura
Date: Fri Dec 05 2008 - 07:31:25 EST

I think triggering OOM at mem_cgroup_prepare_migration would be just a bit
Returning -ENOMEM would be enough for mem_cgroup_prepare_migration.
The caller would handle the case anyway.

Signed-off-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx>
mm/memcontrol.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 4dbce1d..50ee1be 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1330,7 +1330,7 @@ int mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr)

if (mem) {
- ret = mem_cgroup_try_charge(NULL, GFP_KERNEL, &mem);
+ ret = __mem_cgroup_try_charge(NULL, GFP_KERNEL, &mem, false);
*ptr = mem;
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