Re: [patch -mm 4/9 v2] oom: remove compulsory panic_on_oom mode

[KOSAKI Motohiro]

> +/*
> + * The pagefault handler calls here because it is out of memory, so kill a
> + * memory-hogging task.  If a populated zone has ZONE_OOM_LOCKED set, a parallel
> + * oom killing is already in progress so do nothing.  If a task is found with
> + * TIF_MEMDIE set, it has been killed so do nothing and allow it to exit.
> + */
> +void pagefault_out_of_memory(void)
> +{
> +	if (!try_set_system_oom())
> +		return;
> +	out_of_memory(NULL, 0, 0, NULL);
> +	clear_system_oom();
> +}

At least, I agree pagefault oom part. it need ZONE_OOM_LOCKED too.
if you make separated patch, I'll ack it. I don't know memcg part is 
correct or not.



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