netdev - Re: [PATCH net-next 8/9] sock_diag: remove sock_diag

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Message-ID: <20240122225532.21262-1-kuniyu@amazon.com>
Date: Mon, 22 Jan 2024 14:55:32 -0800
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: <edumazet@...gle.com>
CC: <davem@...emloft.net>, <dsahern@...nel.org>, <eric.dumazet@...il.com>,
	<gnault@...hat.com>, <kafai@...com>, <kuba@...nel.org>, <kuniyu@...zon.com>,
	<netdev@...r.kernel.org>, <pabeni@...hat.com>
Subject: Re: [PATCH net-next 8/9] sock_diag: remove sock_diag_mutex

From: Eric Dumazet <edumazet@...gle.com>
Date: Mon, 22 Jan 2024 11:26:02 +0000
> sock_diag_rcv() is still serializing its operations using
> a mutex, for no good reason.
> 
> This came with commit 0a9c73014415 ("[INET_DIAG]: Fix oops
> in netlink_rcv_skb"), but the root cause has been fixed
> with commit cd40b7d3983c ("[NET]: make netlink user -> kernel
> interface synchronious")
> 
> Remove this mutex to let multiple threads run concurrently.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

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