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[IPV6]: Fix again the fl6_sock_lookup() fixed locking

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YOSHIFUJI fairly pointed out, that the users increment should
be done under the ip6_sk_fl_lock not to give IPV6_FL_A_PUT a
chance to put this count to zero and release the flowlabel.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2007-10-18 05:38:48 -07:00 committed by David S. Miller
parent bc34b84155
commit 52f095ee88
1 changed files with 1 additions and 1 deletions
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2
net/ipv6/ip6_flowlabel.c
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@ -210,9 +210,9 @@ struct ip6_flowlabel * fl6_sock_lookup(struct sock *sk, __be32 label)
for (sfl=np->ipv6_fl_list; sfl; sfl = sfl->next) { for (sfl=np->ipv6_fl_list; sfl; sfl = sfl->next) {
struct ip6_flowlabel *fl = sfl->fl; struct ip6_flowlabel *fl = sfl->fl;
if (fl->label == label) { if (fl->label == label) {
read_unlock_bh(&ip6_sk_fl_lock);
fl->lastuse = jiffies; fl->lastuse = jiffies;
atomic_inc(&fl->users); atomic_inc(&fl->users);
read_unlock_bh(&ip6_sk_fl_lock);
return fl; return fl;
} }
} }