netdev - Re: [RFC PATCH 7/9] ipv4: ipmr: convert struct mfc_cache to struct list

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Date:	Tue, 13 Apr 2010 04:15:06 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	kaber@...sh.net
Cc:	netdev@...r.kernel.org
Subject: Re: [RFC PATCH 7/9] ipv4: ipmr: convert struct mfc_cache to struct
 list_head

From: kaber@...sh.net
Date: Sun, 11 Apr 2010 19:37:13 +0200

> From: Patrick McHardy <kaber@...sh.net>
> 
> Signed-off-by: Patrick McHardy <kaber@...sh.net>

Great, it looks like you didn't fall into most of the
traps that usually occur during a list_head conversion :-)

But:

> -		c->next = net->ipv4.mfc_unres_queue;
> -		net->ipv4.mfc_unres_queue = c;
> +		list_add_tail(&c->list, &net->ipv4.mfc_unres_queue);
 ...
>  	write_lock_bh(&mrt_lock);
> -	c->next = net->ipv4.mfc_cache_array[line];
> -	net->ipv4.mfc_cache_array[line] = c;
> +	list_add_tail(&c->list, &net->ipv4.mfc_cache_array[line]);
>  	write_unlock_bh(&mrt_lock);

Are you sure we mean to insert to the tail here?  It looks like a head
insertion to me beforehand, and the fact that the previous list
iterators start at the list head pointer seem to confirm this.
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