Messages in this thread Patch in this message | | | From | Yajun Deng <> | Subject | [PATCH net-next] net: rtnetlink: convert rcu_assign_pointer to RCU_INIT_POINTER | Date | Sat, 18 Sep 2021 14:36:07 +0800 |
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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> --- net/core/rtnetlink.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 972c8cb303a5..327ca6bc6e6d 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -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(); -- 2.32.0
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