linux-kernel - Re: [PATCH v2 1/3] list: Add hlist_count

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Message-ID: <65qcwqfaicc2wrhf5mjrj24j3kep7yv7ezvv22ctrbwyoag43h@tu26mhauwc2u>
Date: Fri, 5 Jan 2024 14:53:55 +0800
From: Coly Li <colyli@...e.de>
To: Pierre Gondois <pierre.gondois@....com>
Cc: linux-kernel@...r.kernel.org, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Arve Hjønnevåg <arve@...roid.com>, 
	Todd Kjos <tkjos@...roid.com>, Martijn Coenen <maco@...roid.com>, 
	Joel Fernandes <joel@...lfernandes.org>, Christian Brauner <brauner@...nel.org>, 
	Carlos Llamas <cmllamas@...gle.com>, Suren Baghdasaryan <surenb@...gle.com>, 
	Kent Overstreet <kent.overstreet@...il.com>, Marco Elver <elver@...gle.com>, 
	Kees Cook <keescook@...omium.org>, Jani Nikula <jani.nikula@...el.com>, 
	Lucas De Marchi <lucas.demarchi@...el.com>, Ingo Molnar <mingo@...nel.org>, 
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, linux-bcache@...r.kernel.org
Subject: Re: [PATCH v2 1/3] list: Add hlist_count_nodes()

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@....com>

Acked-by: Coly Li <colyli@...e.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