linux-kernel - Re: [PATCH 1/3] net: introduce a list of device addresses dev_addr

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Message-ID: <49E59A1C.9030108@cn.fujitsu.com>
Date:	Wed, 15 Apr 2009 16:26:04 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Jiri Pirko <jpirko@...hat.com>
CC:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	jgarzik@...ox.com, davem@...emloft.net,
	shemminger@...ux-foundation.org, bridge@...ts.linux-foundation.org,
	fubar@...ibm.com, bonding-devel@...ts.sourceforge.net,
	kaber@...sh.net, mschmidt@...hat.com, dada1@...mosbay.com,
	ivecera@...hat.com
Subject: Re: [PATCH 1/3] net: introduce a list of device addresses dev_addr_list

> +static int __hw_addr_add_ii(struct list_head *list, unsigned char *addr,
> +			    int addr_len, int ignore_index)
> +{
> +	struct netdev_hw_addr *ha;
> +	int i = 0;
> +
> +	if (addr_len > MAX_ADDR_LEN)
> +		return -EINVAL;
> +
> +	rcu_read_lock();
> +	list_for_each_entry_rcu(ha, list, list) {
> +		if (i++ != ignore_index &&
> +		    !memcmp(ha->addr, addr, addr_len)) {
> +			ha->refcount++;
> +			return 0;

missing rcu_read_unlock() ?

> +		}
> +	}
> +	rcu_read_unlock();
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