diff options
| author | Li RongQing <roy.qing.li@gmail.com> | 2012-09-11 21:59:01 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-09-13 16:53:46 -0400 |
| commit | 5744dd9b71c6b9df944c6a32a000d4a564a2abd7 (patch) | |
| tree | 5d40eb61a4152f32fa15afdfded741648cfc28c7 /net/ipv6/route.c | |
| parent | fb0af4c74f200e3c4846d91d8f2f8b265450bba7 (diff) | |
| download | talos-op-linux-5744dd9b71c6b9df944c6a32a000d4a564a2abd7.tar.gz talos-op-linux-5744dd9b71c6b9df944c6a32a000d4a564a2abd7.zip | |
ipv6: replace write lock with read lock when get route info
geting route info does not write rt->rt6i_table, so replace
write lock with read lock
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/route.c')
| -rw-r--r-- | net/ipv6/route.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c index f568ac697987..83dafa528936 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -1837,7 +1837,7 @@ static struct rt6_info *rt6_get_route_info(struct net *net, if (!table) return NULL; - write_lock_bh(&table->tb6_lock); + read_lock_bh(&table->tb6_lock); fn = fib6_locate(&table->tb6_root, prefix ,prefixlen, NULL, 0); if (!fn) goto out; @@ -1853,7 +1853,7 @@ static struct rt6_info *rt6_get_route_info(struct net *net, break; } out: - write_unlock_bh(&table->tb6_lock); + read_unlock_bh(&table->tb6_lock); return rt; } @@ -1896,7 +1896,7 @@ struct rt6_info *rt6_get_dflt_router(const struct in6_addr *addr, struct net_dev if (!table) return NULL; - write_lock_bh(&table->tb6_lock); + read_lock_bh(&table->tb6_lock); for (rt = table->tb6_root.leaf; rt; rt=rt->dst.rt6_next) { if (dev == rt->dst.dev && ((rt->rt6i_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) && @@ -1905,7 +1905,7 @@ struct rt6_info *rt6_get_dflt_router(const struct in6_addr *addr, struct net_dev } if (rt) dst_hold(&rt->dst); - write_unlock_bh(&table->tb6_lock); + read_unlock_bh(&table->tb6_lock); return rt; } |
