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Subject[PATCH tip/core/rcu 7/9] net/core: Replace rcu_swap_protected() with rcu_replace()
Date
From: "Paul E. McKenney" <paulmck@kernel.org>

This commit replaces the use of rcu_swap_protected() with the more
intuitively appealing rcu_replace() as a step towards removing
rcu_swap_protected().

Link: https://lore.kernel.org/lkml/CAHk-=wiAsJLw1egFEE=Z7-GGtM6wcvtyytXZA1+BHqta4gg6Hw@mail.gmail.com/
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Ido Schimmel <idosch@mellanox.com>
Cc: Petr Machata <petrm@mellanox.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: <netdev@vger.kernel.org>
---
net/core/dev.c | 4 ++--
net/core/sock_reuseport.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index bf3ed41..41f6936 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1288,8 +1288,8 @@ int dev_set_alias(struct net_device *dev, const char *alias, size_t len)
}

mutex_lock(&ifalias_mutex);
- rcu_swap_protected(dev->ifalias, new_alias,
- mutex_is_locked(&ifalias_mutex));
+ new_alias = rcu_replace(dev->ifalias, new_alias,
+ mutex_is_locked(&ifalias_mutex));
mutex_unlock(&ifalias_mutex);

if (new_alias)
diff --git a/net/core/sock_reuseport.c b/net/core/sock_reuseport.c
index f3ceec9..805287b 100644
--- a/net/core/sock_reuseport.c
+++ b/net/core/sock_reuseport.c
@@ -356,8 +356,8 @@ int reuseport_detach_prog(struct sock *sk)
spin_lock_bh(&reuseport_lock);
reuse = rcu_dereference_protected(sk->sk_reuseport_cb,
lockdep_is_held(&reuseport_lock));
- rcu_swap_protected(reuse->prog, old_prog,
- lockdep_is_held(&reuseport_lock));
+ old_prog = rcu_replace(reuse->prog, old_prog,
+ lockdep_is_held(&reuseport_lock));
spin_unlock_bh(&reuseport_lock);

if (!old_prog)
--
2.9.5
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