From 22f4fbd9bd283ef85126e511171932a4af703776 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 24 Nov 2010 11:41:56 -0800 Subject: [PATCH] infiniband: remove dev_base_lock use dev_base_lock is the legacy way to lock the device list, and is planned to disappear. (writers hold RTNL, readers hold RCU lock) Convert rdma_translate_ip() and update_ipv6_gids() to RCU locking. Signed-off-by: Eric Dumazet Acked-by: Roland Dreier Signed-off-by: David S. Miller --- drivers/infiniband/core/addr.c | 6 +++--- drivers/infiniband/hw/mlx4/main.c | 6 +++--- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c index c15fd2e..8aba0ba 100644 --- a/drivers/infiniband/core/addr.c +++ b/drivers/infiniband/core/addr.c @@ -130,8 +130,8 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr) #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) case AF_INET6: - read_lock(&dev_base_lock); - for_each_netdev(&init_net, dev) { + rcu_read_lock(); + for_each_netdev_rcu(&init_net, dev) { if (ipv6_chk_addr(&init_net, &((struct sockaddr_in6 *) addr)->sin6_addr, dev, 1)) { @@ -139,7 +139,7 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr) break; } } - read_unlock(&dev_base_lock); + rcu_read_unlock(); break; #endif } diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index bf3e20c..4e55a28 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -848,8 +848,8 @@ static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear) goto out; } - read_lock(&dev_base_lock); - for_each_netdev(&init_net, tmp) { + rcu_read_lock(); + for_each_netdev_rcu(&init_net, tmp) { if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) { gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); vid = rdma_vlan_dev_vlan_id(tmp); @@ -884,7 +884,7 @@ static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear) } } } - read_unlock(&dev_base_lock); + rcu_read_unlock(); for (i = 0; i < 128; ++i) if (!hits[i]) { -- 2.7.4