net: Drop pernet_operations::async

Synchronous pernet_operations are not allowed anymore.
All are asynchronous. So, drop the structure member.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 6 deletions

diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 09e30bdc7876..37bcf8382b61 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -333,12 +333,6 @@ struct pernet_operations {
         void (*exit_batch)(struct list_head *net_exit_list);
         unsigned int *id;
         size_t size;
-        /*
-         * Indicates above methods are allowed to be executed in parallel
-         * with methods of any other pernet_operations, i.e. they are not
-         * need write locked net_sem.
-         */
-        bool async;
 };
 
 /*