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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2010-02-22 12:44:14 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-02-22 19:50:34 -0800 |
| commit | 5a2d41961dd6815b874b5c0afec0ac96cd90eea4 (patch) | |
| tree | af3d153f9615d9c11feb378f7821c0f280012b52 | |
| parent | bee415ce427d1eab6cfb30221461c7d20cbf1903 (diff) | |
| download | lwn-5a2d41961dd6815b874b5c0afec0ac96cd90eea4.tar.gz lwn-5a2d41961dd6815b874b5c0afec0ac96cd90eea4.zip | |
memcg: fix oom killing a child process in an other cgroup
Presently the oom-killer is memcg aware and it finds the worst process
from processes under memcg(s) in oom. Then, it kills victim's child
first.
It may kill a child in another cgroup and may not be any help for
recovery. And it will break the assumption users have.
This patch fixes it.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -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 f52481b1c1e5..237050478f28 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -459,6 +459,8 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order, list_for_each_entry(c, &p->children, sibling) { if (c->mm == p->mm) continue; + if (mem && !task_in_mem_cgroup(c, mem)) + continue; if (!oom_kill_task(c)) return 0; } |