netdev - Re: [PATCH net-next 2/5] ipv4: use READ_ONCE()/WRITE_ONCE() on net->ipv4.fib

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Message-ID: <20241009235317.60726-1-kuniyu@amazon.com>
Date: Wed, 9 Oct 2024 16:53:17 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: <edumazet@...gle.com>
CC: <davem@...emloft.net>, <dsahern@...nel.org>, <eric.dumazet@...il.com>,
	<jiri@...nulli.us>, <kuba@...nel.org>, <kuniyu@...zon.com>,
	<netdev@...r.kernel.org>, <pabeni@...hat.com>
Subject: Re: [PATCH net-next 2/5] ipv4: use READ_ONCE()/WRITE_ONCE() on net->ipv4.fib_seq

From: Eric Dumazet <edumazet@...gle.com>
Date: Wed,  9 Oct 2024 18:44:02 +0000
> Using RTNL to protect ops->fib_rules_seq reads seems a big hammer.
> 
> Writes are protected by RTNL.
> We can use READ_ONCE() when reading it.
> 
> Constify 'struct net' argument of fib4_rules_seq_read()
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Reviewed-by: Kuniyuki Iwashima <kuniyu@...zon.com>