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Commit d1b88eb9 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcu: Remove return value from RCU_INIT_POINTER() 



The return value from RCU_INIT_POINTER() is not used, and using it
would be quite ugly, for example:

	q = RCU_INIT_POINTER(global_p, p);

To prevent this sort of ugliness from appearing, this commit wraps
RCU_INIT_POINTER() in a do-while loop.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
Acked-by: default avatarDavid Howells <dhowells@redhat.com>
parent d36cc701

include/linux/rcupdate.h

+3 −1
Original line number Original line Diff line number Diff line
@@ -903,7 +903,9 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) 
 * the reader-accessible portions of the linked structure.

 * the reader-accessible portions of the linked structure.

 */

 */

#define RCU_INIT_POINTER(p, v) \

#define RCU_INIT_POINTER(p, v) \

		p = (typeof(*v) __force __rcu *)(v)

	do { \

		p = (typeof(*v) __force __rcu *)(v); \

	} while (0)





/**

/**

 * RCU_POINTER_INITIALIZER() - statically initialize an RCU protected pointer

 * RCU_POINTER_INITIALIZER() - statically initialize an RCU protected pointer