[PATCH 3/9] oom: oom_kill_process() doesn't select kthread child

KOSAKI Motohiro
2010-06-16T11:32:13Z

Now, select_bad_process() have PF_KTHREAD check, but oom_kill_process
doesn't. It mean oom_kill_process() may choose wrong task, especially,
when the child are using use_mm().

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
---
mm/oom_kill.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 1969cc1..6ca6cb8 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -466,6 +466,8 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,

if (child->mm == p->mm)
continue;
+ if (child->flags & PF_KTHREAD)
+ continue;
if (mem && !task_in_mem_cgroup(child, mem))
continue;
if (!has_intersects_mems_allowed(child, nodemask))
--
1.6.5.2