Re: [PATCH 11/12] closures: closure_wait_event()

[Coly Li]

On 2019/6/11 3:14 äå, Kent Overstreet wrote:
> Signed-off-by: Kent Overstreet <kent.overstreet@xxxxxxxxx>

Acked-by: Coly Li <colyli@xxxxxxx>

Thanks.

Coly Li

> ---
>  include/linux/closure.h | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
> 
> diff --git a/include/linux/closure.h b/include/linux/closure.h
> index 308e38028c..abacb91c35 100644
> --- a/include/linux/closure.h
> +++ b/include/linux/closure.h
> @@ -379,4 +379,26 @@ static inline void closure_call(struct closure *cl, closure_fn fn,
>  	continue_at_nobarrier(cl, fn, wq);
>  }
>  
> +#define __closure_wait_event(waitlist, _cond)				\
> +do {									\
> +	struct closure cl;						\
> +									\
> +	closure_init_stack(&cl);					\
> +									\
> +	while (1) {							\
> +		closure_wait(waitlist, &cl);				\
> +		if (_cond)						\
> +			break;						\
> +		closure_sync(&cl);					\
> +	}								\
> +	closure_wake_up(waitlist);					\
> +	closure_sync(&cl);						\
> +} while (0)
> +
> +#define closure_wait_event(waitlist, _cond)				\
> +do {									\
> +	if (!(_cond))							\
> +		__closure_wait_event(waitlist, _cond);			\
> +} while (0)
> +
>  #endif /* _LINUX_CLOSURE_H */
> 


-- 

Coly Li