[PATCH 2/9] oom: oom_kill_process() doesn't select kthread child

[KOSAKI Motohiro]

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@xxxxxxxxxxxxxx>
---
 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 0aeacb2..dc8589e 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -467,6 +467,8 @@ 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



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