From: Eric Dumazet <dada1@cosmosbay.com>
Date: Tue, 25 Nov 2008 21:55:15 +0000 (-0800)
Subject: net: udp_unhash() can test if sk is hashed
X-Git-Tag: v2.6.29-rc1~581^2~486
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=723b46108f8ee75b61ce703d0c9225e4f537bc46;p=pandora-kernel.git

net: udp_unhash() can test if sk is hashed

Impact: Optimization

Like done in inet_unhash(), we can avoid taking a chain lock if
socket is not hashed in udp_unhash()

Triggered by close(socket(AF_INET, SOCK_DGRAM, 0));

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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