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Commit 8518e9bb authored Mar 27, 2018 by Kirill Tkhai Committed by David S. Miller Mar 27, 2018

net: Add more comments



This adds comments to different places to improve
readability.

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

parent 4420bf21

include/net/net_namespace.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -323,6 +323,10 @@ struct pernet_operations {
		* have to keep in mind all other pernet_operations and
		* to introduce a locking, if they share common resources.
		*
		* The only time they are called with exclusive lock is
		* from register_pernet_subsys(), unregister_pernet_subsys()
		* register_pernet_device() and unregister_pernet_device().
		*
		* Exit methods using blocking RCU primitives, such as
		* synchronize_rcu(), should be implemented via exit_batch.
		* Then, destruction of a group of net requires single

net/core/net_namespace.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -43,6 +43,8 @@ static bool init_net_initialized;
		/*
		* pernet_ops_rwsem: protects: pernet_list, net_generic_ids,
		* init_net_initialized and first_device pointer.
		* This is internal net namespace object. Please, don't use it
		* outside.
		*/
		DECLARE_RWSEM(pernet_ops_rwsem);

net/core/rtnetlink.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -459,7 +459,7 @@ static void rtnl_lock_unregistering_all(void)
		*/
		void rtnl_link_unregister(struct rtnl_link_ops *ops)
		{
		/* Close the race with cleanup_net() */
		/* Close the race with setup_net() and cleanup_net() */
		down_write(&pernet_ops_rwsem);
		rtnl_lock_unregistering_all();
		__rtnl_link_unregister(ops);