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mld: get rid of inet6_dev->mc_lock

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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>
This commit is contained in:
Taehee Yoo
2021-03-26 15:14:55 -07:00
committed by David S. Miller
parent 2d9a93b490
commit cf2ce339b4
2 changed files with 0 additions and 10 deletions
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include/net/if_inet6.h
-1
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@@ -167,7 +167,6 @@ struct inet6_dev {
struct ifmcaddr6 *mc_list;
struct ifmcaddr6 *mc_tomb;
spinlock_t mc_lock;
unsigned char mc_qrv; /* Query Robustness Variable */
unsigned char mc_gq_running;