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| author |   Michal Kubeček <mkubecek@suse.cz> | 2016-03-08 14:44:45 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-03-08 15:16:51 -0500 |
| commit | 3dc94f93be161ec4203673de9a34b7362d8985b5 (patch) | |
| tree | b06f18cb9a5fdac6ab626dd9368361fe606a2874 /include/net | |
| parent | ipv6: per netns fib6 walkers (diff) | |
| download | linux-dev-3dc94f93be161ec4203673de9a34b7362d8985b5.tar.xz linux-dev-3dc94f93be161ec4203673de9a34b7362d8985b5.zip | |
ipv6: per netns FIB garbage collection
One of our customers observed issues with FIB6 garbage collectors
running in different network namespaces blocking each other, resulting
in soft lockups (fib6_run_gc() initiated from timer runs always in
forced mode).
Now that FIB6 walkers are separated per namespace, there is no more need
for instances of fib6_run_gc() in different namespaces blocking each
other. There is still a call to icmp6_dst_gc() which operates on shared
data but this function is protected by its own shared lock.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/netns/ipv6.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h index f0109b973648..10d0848f5b8a 100644 --- a/include/net/netns/ipv6.h +++ b/include/net/netns/ipv6.h @@ -61,6 +61,7 @@ struct netns_ipv6 { struct list_head fib6_walkers; struct dst_ops ip6_dst_ops; rwlock_t fib6_walker_lock; + spinlock_t fib6_gc_lock; unsigned int ip6_rt_gc_expire; unsigned long ip6_rt_last_gc; #ifdef CONFIG_IPV6_MULTIPLE_TABLES |