On Tue, Jul 14, 2020 at 7:50 AM Tetsuo Handa
<penguin-kernel@xxxxxxxxxxxxxxxxxxx> wrote:
>
> On 2020/07/11 12:18, Yafang Shao wrote:
> > If the current's MMF_OOM_SKIP is set, it means that the current is exiting
> > or dying and likely to realease its address space. So we don't need to
> > invoke the oom killer again. Otherwise that may cause some unexpected
> > issues, for example, bellow is the issue found in our production
> > environment.
>
> What kernel version are you using?
>
The kernel version is 4.18.
> Commit 7775face207922ea ("memcg: killed threads should not invoke memcg OOM killer")
> should solve this problem.
Yes, this commit should fix this issue. Thanks for the information.
But it seems the proposal that using trylock in
mem_cgroup_out_of_memory() should be better?
The trylock could also solve the problem that different processes are
doing oom at the same time.
--
Thanks
Yafang
