netdev - [2.6.25-rc1] Locks in udp

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Message-Id: <200802111120.GFD39029.SOQLtFOMJFHFVO@I-love.SAKURA.ne.jp>
Date:	Mon, 11 Feb 2008 11:20:37 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	netdev@...r.kernel.org
Subject: [2.6.25-rc1] Locks in udp_recvmsg()?

Hello.

I found that udp_recvmsg() in net/ipv4/udp.c for 2.6.25-rc1 calls
lock_sock() only when it releases the datagram (i.e. out_free: and csum_copy_err:).
Is it correct to call __skb_recv_datagram() without calling lock_sock()
when it acquires the datagram (i.e. try_again:)?

Regards.
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