diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/080-wireguard-0077-wireguard-allowedips-use-kfree_rcu-instead-of-call_r.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/080-wireguard-0077-wireguard-allowedips-use-kfree_rcu-instead-of-call_r.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0077-wireguard-allowedips-use-kfree_rcu-instead-of-call_r.patch b/target/linux/generic/backport-5.4/080-wireguard-0077-wireguard-allowedips-use-kfree_rcu-instead-of-call_r.patch new file mode 100644 index 0000000000..edd90484dd --- /dev/null +++ b/target/linux/generic/backport-5.4/080-wireguard-0077-wireguard-allowedips-use-kfree_rcu-instead-of-call_r.patch @@ -0,0 +1,41 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Wei Yongjun <weiyongjun1@huawei.com> +Date: Sun, 15 Dec 2019 22:08:04 +0100 +Subject: [PATCH] wireguard: allowedips: use kfree_rcu() instead of call_rcu() + +commit d89ee7d5c73af15c1c6f12b016cdf469742b5726 upstream. + +The callback function of call_rcu() just calls a kfree(), so we +can use kfree_rcu() instead of call_rcu() + callback function. + +Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> +Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> +--- + drivers/net/wireguard/allowedips.c | 7 +------ + 1 file changed, 1 insertion(+), 6 deletions(-) + +--- a/drivers/net/wireguard/allowedips.c ++++ b/drivers/net/wireguard/allowedips.c +@@ -31,11 +31,6 @@ static void copy_and_assign_cidr(struct + #define CHOOSE_NODE(parent, key) \ + parent->bit[(key[parent->bit_at_a] >> parent->bit_at_b) & 1] + +-static void node_free_rcu(struct rcu_head *rcu) +-{ +- kfree(container_of(rcu, struct allowedips_node, rcu)); +-} +- + static void push_rcu(struct allowedips_node **stack, + struct allowedips_node __rcu *p, unsigned int *len) + { +@@ -112,7 +107,7 @@ static void walk_remove_by_peer(struct a + if (!node->bit[0] || !node->bit[1]) { + rcu_assign_pointer(*nptr, DEREF( + &node->bit[!REF(node->bit[0])])); +- call_rcu(&node->rcu, node_free_rcu); ++ kfree_rcu(node, rcu); + node = DEREF(nptr); + } + } |