Re: [PATCH 1/2] oom: don't ignore rss in nascent mm

[Oleg Nesterov]

On 09/09, KOSAKI Motohiro wrote:
>
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -1226,6 +1226,7 @@ struct task_struct {
>  	int pdeath_signal;  /*  The signal sent when the parent dies  */
>  	/* ??? */
>  	unsigned int personality;
> +	struct mm_struct *in_exec_mm;

Oh, yes, this has to be per-thread (unlike ->mm, btw).

I wonder if it makes sense to move ->cred_guard_mutex from task_struct
to signal_struct and thus make multiple-threads-inside-exec impossible.
Only one thread can win anyway.

Oleg.

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