Re: [PATCH 1/2] percpu_ref: add percpu_ref_atomic_count()

[Bart Van Assche <bvanassche@acm.org>]

On 4/15/21 5:22 PM, Pavel Begunkov wrote:
> diff --git a/lib/percpu-refcount.c b/lib/percpu-refcount.c
> index a1071cdefb5a..56286995e2b8 100644
> --- a/lib/percpu-refcount.c
> +++ b/lib/percpu-refcount.c
> @@ -425,6 +425,32 @@ bool percpu_ref_is_zero(struct percpu_ref *ref)
>  }
>  EXPORT_SYMBOL_GPL(percpu_ref_is_zero);
>  
> +/**
> + * percpu_ref_atomic_count - returns number of left references
> + * @ref: percpu_ref to test
> + *
> + * This function is safe to call as long as @ref is switch into atomic mode,
> + * and is between init and exit.
> + */

How about using the name percpu_ref_read() instead of
percpu_ref_atomic_count()?

Thanks,

Bart.