netdev - What is lock_sock() before skb_free

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Message-Id: <200904181704.FDC21361.FQLOFHOOSVFtMJ@I-love.SAKURA.ne.jp>
Date:	Sat, 18 Apr 2009 17:04:01 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	netdev@...r.kernel.org
Subject: What is lock_sock() before skb_free_datagram() for?

Hello.

udp_recvmsg() and udpv6_recvmsg() call skb_free_datagram() with 
lock_sock().
But raw_recvmsg() and rawv6_recvmsg() call skb_free_datagram() 
without
lock_sock().
Is it OK?
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