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(parent: d5f31fb) | patch
inetpeer: do not use zero refcnt for freed entries
authorEric Dumazet <eric.dumazet@gmail.com>
Wed, 16 Jun 2010 04:47:39 +0000 (21:47 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 16 Jun 2010 04:47:39 +0000 (21:47 -0700)
commit5f2f89209500623ccb4713ec4af7de86fd30a9e4
tree6a48b8183ac6d60d8ce6a9c907de1ea35c1ca918tree | snapshot (tar.gz zip)
parentd5f31fbfd8fa3836a918592032853c41d1797c3dcommit | diff
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>
net/ipv4/inetpeer.c diff | blob | blame | history