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| author | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2010-08-09 17:19:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-09 20:45:01 -0700 |
| commit | 2c5ea53ce46ebb232e0d9a475fdd2b166d2a516b (patch) | |
| tree | 0dc0883ee29201600ec3950142d69f9860af2527 /mm | |
| parent | 7c59aec830c7ed6c745bd513982cee3563ed20c1 (diff) | |
| download | lwn-2c5ea53ce46ebb232e0d9a475fdd2b166d2a516b.tar.gz lwn-2c5ea53ce46ebb232e0d9a475fdd2b166d2a516b.zip | |
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>
Diffstat (limited to 'mm')
| -rw-r--r-- | 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 6e9f16a910e0..b9816ea2eb8f 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)) |