Re: [PATCH v8 4/9] sched: move no_new_privs into new atomic flags

From: Oleg Nesterov
Date: Wed Jun 25 2014 - 09:46:31 EST


On 06/24, Kees Cook wrote:
>
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -1307,8 +1307,7 @@ struct task_struct {
> * execve */
> unsigned in_iowait:1;
>
> - /* task may not gain privileges */
> - unsigned no_new_privs:1;
> + unsigned long atomic_flags; /* Flags needing atomic access. */
>
> /* Revert to default priority/policy when forking */
> unsigned sched_reset_on_fork:1;

Agreed, personally I like it more than seccomp->flags.

But probably it would be better to place the new member before/after
other bitfields to save the space?

Oleg.

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