drivers/block: Use RCU_INIT_POINTER(x, NULL) in drbd/drbd_state.c

This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL)

The rcu_assign_pointer() ensures that the initialization of a structure
is carried out before storing a pointer to that structure.
And in the case of the NULL pointer, there is no structure to initialize.
So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL)

Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c
index a7772e2aba7e1a0383cbcf98360b50c532b5e596..4a75b7a03b9d713e2ad5104a55f0d25bba378633 100644 (file)
--- a/drivers/block/drbd/drbd_state.c
+++ b/drivers/block/drbd/drbd_state.c
@@ -1570,7 +1570,7 @@ static int w_after_conn_state_ch(struct drbd_work *w, int unused)
                old_conf = connection->net_conf;
                connection->my_addr_len = 0;
                connection->peer_addr_len = 0;
-               rcu_assign_pointer(connection->net_conf, NULL);
+               RCU_INIT_POINTER(connection->net_conf, NULL);
                conn_free_crypto(connection);
                mutex_unlock(&connection->resource->conf_update);