fib_trie: remove duplicated rcu lock

fib_table_lookup has included the rcu lock protection.

Signed-off-by: baker.zhang <baker.kernel@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index b3f627ac4ed8ae5031d559a5648612b46f015e25..d846304b7b89d619d53609c5e435b3ddcc3e2d84 100644 (file)
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -933,7 +933,6 @@ static void nl_fib_lookup(struct fib_result_nl *frn, struct fib_table *tb)
                local_bh_disable();
 
                frn->tb_id = tb->tb_id;
-               rcu_read_lock();
                frn->err = fib_table_lookup(tb, &fl4, &res, FIB_LOOKUP_NOREF);
 
                if (!frn->err) {
@@ -942,7 +941,6 @@ static void nl_fib_lookup(struct fib_result_nl *frn, struct fib_table *tb)
                        frn->type = res.type;
                        frn->scope = res.scope;
                }
-               rcu_read_unlock();
                local_bh_enable();
        }
 }