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(parent: 2d9a93b) | patch
mld: get rid of inet6_dev->mc_lock
authorTaehee Yoo <ap420073@gmail.com>
Thu, 25 Mar 2021 16:16:52 +0000 (16:16 +0000)
committerDavid S. Miller <davem@davemloft.net>
Fri, 26 Mar 2021 22:14:55 +0000 (15:14 -0700)
commitcf2ce339b401bc53ee131f0ce38bae32a949925e
tree7f7528820bbb5ce295f1d085d8cc327afe669eb0tree | snapshot
parent2d9a93b4902be6a5504b5941dd15e9cd776aadcacommit | diff
mld: get rid of inet6_dev->mc_lock

The purpose of mc_lock is to protect inet6_dev->mc_tomb.
But mc_tomb is already protected by RTNL and all functions,
which manipulate mc_tomb are called under RTNL.
So, mc_lock is not needed.
Furthermore, it is spinlock so the critical section is atomic.
In order to reduce atomic context, it should be removed.

Suggested-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/if_inet6.h diff | blob | history
net/ipv6/mcast.c diff | blob | history
Domain: System / Kernel;