From d90a2f5b8998f9063ff8aa7ae0fb301e3933f709 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Fri, 25 Mar 2011 11:10:29 +0100 Subject: References are protected by rwlock instead of mutex The timeout variant of the list:set type must reference the member sets. However, its garbage collector runs at timer interrupt so the mutex protection of the references is a no go. Therefore the reference protection is converted to rwlock. --- kernel/net/netfilter/ipset/ip_set_list_set.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'kernel/net/netfilter/ipset/ip_set_list_set.c') diff --git a/kernel/net/netfilter/ipset/ip_set_list_set.c b/kernel/net/netfilter/ipset/ip_set_list_set.c index f4a46c0..e9159e9 100644 --- a/kernel/net/netfilter/ipset/ip_set_list_set.c +++ b/kernel/net/netfilter/ipset/ip_set_list_set.c @@ -366,8 +366,7 @@ list_set_head(struct ip_set *set, struct sk_buff *skb) NLA_PUT_NET32(skb, IPSET_ATTR_SIZE, htonl(map->size)); if (with_timeout(map->timeout)) NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, htonl(map->timeout)); - NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES, - htonl(atomic_read(&set->ref) - 1)); + NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref - 1)); NLA_PUT_NET32(skb, IPSET_ATTR_MEMSIZE, htonl(sizeof(*map) + map->size * map->dsize)); ipset_nest_end(skb, nested); @@ -457,8 +456,7 @@ list_set_gc(unsigned long ul_set) struct list_set *map = set->data; struct set_telem *e; u32 i; - - /* nfnl_lock should be called */ + write_lock_bh(&set->lock); for (i = 0; i < map->size; i++) { e = list_set_telem(map, i); -- cgit v1.2.3