linux-kernel - Re: [PATCH net v3 2/2] ax25: Change kfree() in ax25_dev_free() to ax25_dev

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Date: Mon, 6 May 2024 17:50:19 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Dan Carpenter <dan.carpenter@...aro.org>,
 Duoming Zhou <duoming@....edu.cn>, linux-hams@...r.kernel.org,
 netdev@...r.kernel.org, kernel-janitors@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Jörg Reuter <jreuter@...na.de>,
 Paolo Abeni <pabeni@...hat.com>, LKML <linux-kernel@...r.kernel.org>,
 Lars Kellogg-Stedman <lars@...bit.com>, Simon Horman <horms@...nel.org>
Subject: Re: [PATCH net v3 2/2] ax25: Change kfree() in ax25_dev_free() to
 ax25_dev_put()

…
> Replace it with a ax25_dev_put() call instead.
…
> ---
> Changes in v3:
>   - Make commit messages more clearer.
…
> +++ b/net/ax25/ax25_dev.c
> @@ -188,16 +188,13 @@ struct net_device *ax25_fwd_dev(struct net_device *dev)
>   */
>  void __exit ax25_dev_free(void)
>  {
…
> -	ax25_dev = ax25_dev_list;
> -	while (ax25_dev != NULL) {
> -		s        = ax25_dev;
> -		netdev_put(ax25_dev->dev, &ax25_dev->dev_tracker);
> -		ax25_dev = ax25_dev->next;
> -		kfree(s);
> +	list_for_each_entry_safe(s, n, &ax25_dev_list, list) {
> +		netdev_put(s->dev, &s->dev_tracker);
> +		list_del(&s->list);
> +		ax25_dev_put(s);
>  	}
> -	ax25_dev_list = NULL;
…

Can the increased application of the Linux list API be offered as
a separate update step?
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.9-rc7#n81

Regards,
Markus