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    Subject[PATCH 7/9] net/core: Switch to kvfree_rcu() API
    Date
    Instead of invoking a synchronize_rcu() to free a pointer
    after a grace period we can directly make use of new API
    that does the same but in more efficient way.

    CC: "David S. Miller" <davem@davemloft.net>
    Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
    ---
    net/core/sysctl_net_core.c | 3 +--
    1 file changed, 1 insertion(+), 2 deletions(-)

    diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
    index 5f88526ad61c..8b4ab9a6e2d7 100644
    --- a/net/core/sysctl_net_core.c
    +++ b/net/core/sysctl_net_core.c
    @@ -141,8 +141,7 @@ static int flow_limit_cpu_sysctl(struct ctl_table *table, int write,
    lockdep_is_held(&flow_limit_update_mutex));
    if (cur && !cpumask_test_cpu(i, mask)) {
    RCU_INIT_POINTER(sd->flow_limit, NULL);
    - synchronize_rcu();
    - kfree(cur);
    + kvfree_rcu(cur);
    } else if (!cur && cpumask_test_cpu(i, mask)) {
    cur = kzalloc_node(len, GFP_KERNEL,
    cpu_to_node(i));
    --
    2.30.2
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