Re: [PATCH 06/13] blkcg: add generic throttling mechanism

[Johannes Weiner]

On Tue, May 29, 2018 at 05:17:17PM -0400, Josef Bacik wrote:
> @@ -1099,6 +1099,11 @@ struct task_struct {
>  	unsigned int			memcg_nr_pages_over_high;
>  #endif
>  
> +#ifdef CONFIG_BLK_CGROUP
> +	struct request_queue		*throttle_queue;
> +	bool				use_memdelay;
> +#endif

Since you only touch use_memdelay from current, you can make this a
single bit and pack it with the other task flags farther up;
memcg_may_oom, no_cgroup_migration and friends.