From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 16 Jun 2010 04:47:39 +0000 (-0700)
Subject: inetpeer: do not use zero refcnt for freed entries
X-Git-Tag: v2.6.36-rc1~571^2~562
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f2f89209500623ccb4713ec4af7de86fd30a9e4;p=pandora-kernel.git

inetpeer: do not use zero refcnt for freed entries

Followup of commit aa1039e73cc2 (inetpeer: RCU conversion)

Unused inet_peer entries have a null refcnt.

Using atomic_inc_not_zero() in rcu lookups is not going to work for
them, and slow path is taken.

Fix this using -1 marker instead of 0 for deleted entries.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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