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oom: oom_kill_process() doesn't select kthread child

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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>
This commit is contained in:
KOSAKI Motohiro 2010-08-09 17:19:34 -07:00 committed by Linus Torvalds
parent 7c59aec830
commit 2c5ea53ce4
1 changed files with 2 additions and 0 deletions
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2
mm/oom_kill.c
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@ -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))