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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2010-08-10 00:19:34 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-10 03:45:01 (GMT)
commit2c5ea53ce46ebb232e0d9a475fdd2b166d2a516b (patch)
tree0dc0883ee29201600ec3950142d69f9860af2527
parent7c59aec830c7ed6c745bd513982cee3563ed20c1 (diff)
downloadlinux-2c5ea53ce46ebb232e0d9a475fdd2b166d2a516b.tar.xz
oom: oom_kill_process() doesn't select kthread child
Presently select_bad_process() has a 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> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Cc: David Rientjes <rientjes@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/oom_kill.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 6e9f16a..b9816ea 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))