rcu: Add an RCU_INITIALIZER for global RCU-protected pointers

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There is currently no way to initialize a global RCU-protected pointer
without either putting up with sparse complaints or open-coding an
obscure cast.  This commit therefore creates RCU_INITIALIZER(), which
is intended to be used as follows:

	struct foo __rcu *p = RCU_INITIALIZER(&my_rcu_structure);

This commit also applies RCU_INITIALIZER() to eliminate repeated
open-coded obscure casts in __rcu_assign_pointer(), RCU_INIT_POINTER(),
and RCU_POINTER_INITIALIZER().  This commit also inlines
__rcu_assign_pointer() into its only caller, rcu_assign_pointer().

Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

...

This commit is contained in:

Paul E. McKenney 2013-11-11 09:59:34 -08:00

parent 9d162cd063

commit 462225ae47

1 changed files with 42 additions and 38 deletions

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include/linux/rcupdate.h

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