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net: rtnetlink: convert rcu_assign_pointer to RCU_INIT_POINTER

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It no need barrier when assigning a NULL value to an RCU protected
pointer. So use RCU_INIT_POINTER() instead for more fast.

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yajun Deng 2021-09-18 14:36:07 +08:00 committed by David S. Miller
parent 9ce4e3d6d8
commit 4fc2998983
1 changed files with 2 additions and 2 deletions
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4
net/core/rtnetlink.c
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@ -301,7 +301,7 @@ int rtnl_unregister(int protocol, int msgtype)
}
link = rtnl_dereference(tab[msgindex]);
rcu_assign_pointer(tab[msgindex], NULL);
RCU_INIT_POINTER(tab[msgindex], NULL);
rtnl_unlock();
kfree_rcu(link, rcu);
@ -337,7 +337,7 @@ void rtnl_unregister_all(int protocol)
if (!link)
continue;
rcu_assign_pointer(tab[msgindex], NULL);
RCU_INIT_POINTER(tab[msgindex], NULL);
kfree_rcu(link, rcu);
}
rtnl_unlock();