diff options
| author | Martin KaFai Lau <kafai@fb.com> | 2015-09-15 23:30:09 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-09-15 23:53:05 +0200 |
| commit | 70da5b5c532f0ec8aa76b4f46158da5f010f34b3 (patch) | |
| tree | 11b8e0054461b9788d669215416655f112545670 /include | |
| parent | ipv6: Avoid double dst_free (diff) | |
| download | linux-70da5b5c532f0ec8aa76b4f46158da5f010f34b3.tar.xz linux-70da5b5c532f0ec8aa76b4f46158da5f010f34b3.zip | |
ipv6: Replace spinlock with seqlock and rcu in ip6_tunnel
This patch uses a seqlock to ensure consistency between idst->dst and
idst->cookie. It also makes dst freeing from fib tree to undergo a
rcu grace period.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/ip6_tunnel.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/net/ip6_tunnel.h b/include/net/ip6_tunnel.h index 60b4f402f78c..65c2a9397b3c 100644 --- a/include/net/ip6_tunnel.h +++ b/include/net/ip6_tunnel.h @@ -33,8 +33,8 @@ struct __ip6_tnl_parm { }; struct ip6_tnl_dst { - spinlock_t lock; - struct dst_entry *dst; + seqlock_t lock; + struct dst_entry __rcu *dst; u32 cookie; }; |