Re: [PATCH v2 1/3] list: Add hlist_count_nodes()

From: Coly Li <colyli@suse.de>
To: Pierre Gondois <pierre.gondois@arm.com>
Cc: linux-kernel@vger.kernel.org,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Arve Hjønnevåg" <arve@android.com>,
	"Todd Kjos" <tkjos@android.com>,
	"Martijn Coenen" <maco@android.com>,
	"Joel Fernandes" <joel@joelfernandes.org>,
	"Christian Brauner" <brauner@kernel.org>,
	"Carlos Llamas" <cmllamas@google.com>,
	"Suren Baghdasaryan" <surenb@google.com>,
	"Kent Overstreet" <kent.overstreet@gmail.com>,
	"Marco Elver" <elver@google.com>,
	"Kees Cook" <keescook@chromium.org>,
	"Jani Nikula" <jani.nikula@intel.com>,
	"Lucas De Marchi" <lucas.demarchi@intel.com>,
	"Ingo Molnar" <mingo@kernel.org>,
	"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	linux-bcache@vger.kernel.org
Subject: Re: [PATCH v2 1/3] list: Add hlist_count_nodes()
Date: Fri, 5 Jan 2024 14:53:55 +0800	[thread overview]
Message-ID: <65qcwqfaicc2wrhf5mjrj24j3kep7yv7ezvv22ctrbwyoag43h@tu26mhauwc2u> (raw)
In-Reply-To: <20240104164937.424320-2-pierre.gondois@arm.com>

On Thu, Jan 04, 2024 at 05:49:33PM +0100, Pierre Gondois wrote:
> Add a function to count nodes in a hlist. hlist_count_nodes()
> is similar to list_count_nodes().
> 
> Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>

Acked-by: Coly Li <colyli@suse.de>

Thanks.

> ---
>  include/linux/list.h | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/include/linux/list.h b/include/linux/list.h
> index 1837caedf723..0f1b1d4a2e2e 100644
> --- a/include/linux/list.h
> +++ b/include/linux/list.h
> @@ -1175,4 +1175,19 @@ static inline void hlist_move_list(struct hlist_head *old,
>  	     pos && ({ n = pos->member.next; 1; });			\
>  	     pos = hlist_entry_safe(n, typeof(*pos), member))
>  
> +/**
> + * hlist_count_nodes - count nodes in the hlist
> + * @head:	the head for your hlist.
> + */
> +static inline size_t hlist_count_nodes(struct hlist_head *head)
> +{
> +	struct hlist_node *pos;
> +	size_t count = 0;
> +
> +	hlist_for_each(pos, head)
> +		count++;
> +
> +	return count;
> +}
> +
>  #endif
> -- 
> 2.25.1
> 
> 

-- 
Coly Li