ipv4: get rid of ip_ra_lock
authorWANG Cong <xiyou.wangcong@gmail.com>
Fri, 28 Apr 2017 17:04:29 +0000 (10:04 -0700)
committerDavid S. Miller <davem@davemloft.net>
Mon, 1 May 2017 02:44:04 +0000 (22:44 -0400)
commitba3f571d5dde27fc4ae83aabe2c06ff08087af49
tree27f69a0cce85e6e464684e0660809cf7fc4964be
parent5010e948420ea1cff85f6c2f64ec7a011aea3d07
ipv4: get rid of ip_ra_lock

After commit 1215e51edad1 ("ipv4: fix a deadlock in ip_ra_control")
we always take RTNL lock for ip_ra_control() which is the only place
we update the list ip_ra_chain, so the ip_ra_lock is no longer needed.

As Eric points out, BH does not need to disable either, RCU readers
don't care.

Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/ip_sockglue.c