net,rcu: convert call_rcu(xps_dev_maps_release) to kfree_rcu()

The rcu callback xps_dev_maps_release() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(xps_dev_maps_release).

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

1 files changed, 2 insertions, 10 deletions

diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 48ffc216c86f..80b2aad3b73d 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -891,14 +891,6 @@ static ssize_t show_xps_map(struct netdev_queue *queue,
         return len;
 }
 
-static void xps_dev_maps_release(struct rcu_head *rcu)
-{
-        struct xps_dev_maps *dev_maps =
-            container_of(rcu, struct xps_dev_maps, rcu);
-
-        kfree(dev_maps);
-}
-
 static DEFINE_MUTEX(xps_map_mutex);
 #define xmap_dereference(P)             \
         rcu_dereference_protected((P), lockdep_is_held(&xps_map_mutex))
@@ -1008,7 +1000,7 @@ static ssize_t store_xps_map(struct netdev_queue *queue,
         }
 
         if (dev_maps)
-                call_rcu(&dev_maps->rcu, xps_dev_maps_release);
+                kfree_rcu(dev_maps, rcu);
 
         netdev_queue_numa_node_write(queue, (numa_node >= 0) ? numa_node :
                                             NUMA_NO_NODE);
@@ -1080,7 +1072,7 @@ static void netdev_queue_release(struct kobject *kobj)
 
                 if (!nonempty) {
                         RCU_INIT_POINTER(dev->xps_maps, NULL);
-                        call_rcu(&dev_maps->rcu, xps_dev_maps_release);
+                        kfree_rcu(dev_maps, rcu);
                 }
         }