diff options
| author | WANG Cong <xiyou.wangcong@gmail.com> | 2016-12-09 21:10:59 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-12-10 17:25:58 -0500 |
| commit | efa172f42836477bf1ac3c9a3053140df764699c (patch) | |
| tree | 88160db9443b8a36e94c65f5fc5325c4b4be77e6 | |
| parent | 821781a9f40673c2aa0f29d9d8226ec320dff20c (diff) | |
| download | linux-efa172f42836477bf1ac3c9a3053140df764699c.tar.gz linux-efa172f42836477bf1ac3c9a3053140df764699c.tar.bz2 linux-efa172f42836477bf1ac3c9a3053140df764699c.zip | |
netlink: use blocking notifier
netlink_chain is called in ->release(), which is apparently
a process context, so we don't have to use an atomic notifier
here.
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/netlink/af_netlink.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 246f29d365c0..801d474de75b 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -113,7 +113,7 @@ static atomic_t nl_table_users = ATOMIC_INIT(0); #define nl_deref_protected(X) rcu_dereference_protected(X, lockdep_is_held(&nl_table_lock)); -static ATOMIC_NOTIFIER_HEAD(netlink_chain); +static BLOCKING_NOTIFIER_HEAD(netlink_chain); static DEFINE_SPINLOCK(netlink_tap_lock); static struct list_head netlink_tap_all __read_mostly; @@ -711,7 +711,7 @@ static int netlink_release(struct socket *sock) .protocol = sk->sk_protocol, .portid = nlk->portid, }; - atomic_notifier_call_chain(&netlink_chain, + blocking_notifier_call_chain(&netlink_chain, NETLINK_URELEASE, &n); } @@ -2504,13 +2504,13 @@ static const struct file_operations netlink_seq_fops = { int netlink_register_notifier(struct notifier_block *nb) { - return atomic_notifier_chain_register(&netlink_chain, nb); + return blocking_notifier_chain_register(&netlink_chain, nb); } EXPORT_SYMBOL(netlink_register_notifier); int netlink_unregister_notifier(struct notifier_block *nb) { - return atomic_notifier_chain_unregister(&netlink_chain, nb); + return blocking_notifier_chain_unregister(&netlink_chain, nb); } EXPORT_SYMBOL(netlink_unregister_notifier); |