diff options
| author | Taehee Yoo <ap420073@gmail.com> | 2021-03-25 19:16:55 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-27 01:14:56 +0300 |
| commit | 88e2ca3080947fe22eb520c1f8231e79a105d011 (patch) | |
| tree | 546cc57e9db1e1f5c09b951694a4213d1d725515 /net/ipv6/addrconf_core.c | |
| parent | 4b200e398953c237c86d32bf26d4cb2a96556a6f (diff) | |
| download | linux-88e2ca3080947fe22eb520c1f8231e79a105d011.tar.xz | |
mld: convert ifmcaddr6 to RCU
The ifmcaddr6 has been protected by inet6_dev->lock(rwlock) so that
the critical section is atomic context. In order to switch this context,
changing locking is needed. The ifmcaddr6 actually already protected by
RTNL So if it's converted to use RCU, its control path context can be
switched to sleepable.
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>
Diffstat (limited to 'net/ipv6/addrconf_core.c')
| -rw-r--r-- | net/ipv6/addrconf_core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c index c70c192bc91b..a36626afbc02 100644 --- a/net/ipv6/addrconf_core.c +++ b/net/ipv6/addrconf_core.c @@ -250,7 +250,7 @@ void in6_dev_finish_destroy(struct inet6_dev *idev) struct net_device *dev = idev->dev; WARN_ON(!list_empty(&idev->addr_list)); - WARN_ON(idev->mc_list); + WARN_ON(rcu_access_pointer(idev->mc_list)); WARN_ON(timer_pending(&idev->rs_timer)); #ifdef NET_REFCNT_DEBUG |