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authorHerbert Xu <herbert@gondor.apana.org.au>2005-10-03 17:35:55 -0400
committerDavid S. Miller <davem@davemloft.net>2005-10-03 17:35:55 -0400
commite5ed639913eea3e4783a550291775ab78dd84966 (patch)
treee6e915aa686d2a7125181fc83a847e1955a8ba46 /net/sctp/protocol.c
parenta5e7c210fefd2454c757a3542e41063407ca7108 (diff)
[IPV4]: Replace __in_dev_get with __in_dev_get_rcu/rtnl
The following patch renames __in_dev_get() to __in_dev_get_rtnl() and introduces __in_dev_get_rcu() to cover the second case. 1) RCU with refcnt should use in_dev_get(). 2) RCU without refcnt should use __in_dev_get_rcu(). 3) All others must hold RTNL and use __in_dev_get_rtnl(). There is one exception in net/ipv4/route.c which is in fact a pre-existing race condition. I've marked it as such so that we remember to fix it. This patch is based on suggestions and prior work by Suzanne Wood and Paul McKenney. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/protocol.c')
-rw-r--r--net/sctp/protocol.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index e7025be77691..f01d1c9002a1 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -147,7 +147,7 @@ static void sctp_v4_copy_addrlist(struct list_head *addrlist,
147 struct sctp_sockaddr_entry *addr; 147 struct sctp_sockaddr_entry *addr;
148 148
149 rcu_read_lock(); 149 rcu_read_lock();
150 if ((in_dev = __in_dev_get(dev)) == NULL) { 150 if ((in_dev = __in_dev_get_rcu(dev)) == NULL) {
151 rcu_read_unlock(); 151 rcu_read_unlock();
152 return; 152 return;
153 } 153 }