diff options
| author | Sachin Sant <sachinp@in.ibm.com> | 2010-11-26 02:41:17 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-11-28 18:13:16 -0800 |
| commit | f3aa3136d9c15ff693198eb34701a74bb0b6b969 (patch) | |
| tree | 47f26d5a3ee93d8139e6f4b6b336399dbd585d9b /drivers/s390/net/qeth_l3_main.c | |
| parent | 5e9559689735f760f3a1fb9b2aafeb4d8efbf8f5 (diff) | |
qeth lcs: convert mc rwlock to RCU
Commit 1d7138de878d1d4210727c1200193e69596f93b3
igmp: RCU conversion of in_dev->mc_list
converted rwlock to RCU.
Update the s390 network drivers(qeth & lcs) code to adapt to this change.
V2 : Changes based on suggestions given by Eric Dumazet
Signed-off-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390/net/qeth_l3_main.c')
| -rw-r--r-- | drivers/s390/net/qeth_l3_main.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 74d1401a5d5..65291db324f 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -1796,7 +1796,8 @@ static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev) char buf[MAX_ADDR_LEN]; QETH_CARD_TEXT(card, 4, "addmc"); - for (im4 = in4_dev->mc_list; im4; im4 = im4->next) { + for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL; + im4 = rcu_dereference(im4->next_rcu)) { qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev); ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); if (!ipm) @@ -1828,9 +1829,9 @@ static void qeth_l3_add_vlan_mc(struct qeth_card *card) in_dev = in_dev_get(netdev); if (!in_dev) continue; - read_lock(&in_dev->mc_list_lock); + rcu_read_lock(); qeth_l3_add_mc(card, in_dev); - read_unlock(&in_dev->mc_list_lock); + rcu_read_unlock(); in_dev_put(in_dev); } } @@ -1843,10 +1844,10 @@ static void qeth_l3_add_multicast_ipv4(struct qeth_card *card) in4_dev = in_dev_get(card->dev); if (in4_dev == NULL) return; - read_lock(&in4_dev->mc_list_lock); + rcu_read_lock(); qeth_l3_add_mc(card, in4_dev); qeth_l3_add_vlan_mc(card); - read_unlock(&in4_dev->mc_list_lock); + rcu_read_unlock(); in_dev_put(in4_dev); } |