rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER
When assigning a NULL value to an RCU protected pointer, no barrier
is needed. The rcu_assign_pointer, used to handle that but will soon
change to not handle the special case.
Convert all rcu_assign_pointer of NULL value.
//smpl
@@ expression P; @@
- rcu_assign_pointer(P, NULL)
+ RCU_INIT_POINTER(P, NULL)
// </smpl>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 1683e5d..b1ab887 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -987,10 +987,10 @@
}
if (nonempty)
- rcu_assign_pointer(dev->xps_maps, new_dev_maps);
+ RCU_INIT_POINTER(dev->xps_maps, new_dev_maps);
else {
kfree(new_dev_maps);
- rcu_assign_pointer(dev->xps_maps, NULL);
+ RCU_INIT_POINTER(dev->xps_maps, NULL);
}
if (dev_maps)