From: Eric Dumazet <dada1@cosmosbay.com>
Date: Thu, 20 Nov 2008 08:40:07 +0000 (-0800)
Subject: net: listening_hash get a spinlock per bucket
X-Git-Tag: v2.6.29-rc1~581^2~645
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5caea4ea7088e80ac5410d04660346094608b909;p=pandora-kernel.git

net: listening_hash get a spinlock per bucket

This patch prepares RCU migration of listening_hash table for
TCP/DCCP protocols.

listening_hash table being small (32 slots per protocol), we add
a spinlock for each slot, instead of a single rwlock for whole table.

This should reduce hold time of readers, and writers concurrency.

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