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

The rcu callback xps_map_release() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(xps_map_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, 9 deletions

diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index c410f2854c89..48ffc216c86f 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -891,13 +891,6 @@ static ssize_t show_xps_map(struct netdev_queue *queue,
         return len;
 }
 
-static void xps_map_release(struct rcu_head *rcu)
-{
-        struct xps_map *map = container_of(rcu, struct xps_map, rcu);
-
-        kfree(map);
-}
-
 static void xps_dev_maps_release(struct rcu_head *rcu)
 {
         struct xps_dev_maps *dev_maps =
@@ -1002,7 +995,7 @@ static ssize_t store_xps_map(struct netdev_queue *queue,
                 map = dev_maps ?
                         xmap_dereference(dev_maps->cpu_map[cpu]) : NULL;
                 if (map && xmap_dereference(new_dev_maps->cpu_map[cpu]) != map)
-                        call_rcu(&map->rcu, xps_map_release);
+                        kfree_rcu(map, rcu);
                 if (new_dev_maps->cpu_map[cpu])
                         nonempty = 1;
         }
@@ -1077,7 +1070,7 @@ static void netdev_queue_release(struct kobject *kobj)
                                 else {
                                         RCU_INIT_POINTER(dev_maps->cpu_map[i],
                                             NULL);
-                                        call_rcu(&map->rcu, xps_map_release);
+                                        kfree_rcu(map, rcu);
                                         map = NULL;
                                 }
                         }