IPv6: convert mc_lock to spinlock
Only used for writing, so convert to spinlock
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h
index e9d69d1..545d8b0 100644
--- a/include/net/if_inet6.h
+++ b/include/net/if_inet6.h
@@ -157,7 +157,7 @@
struct ifmcaddr6 *mc_list;
struct ifmcaddr6 *mc_tomb;
- rwlock_t mc_lock;
+ spinlock_t mc_lock;
unsigned char mc_qrv;
unsigned char mc_gq_running;
unsigned char mc_ifc_count;