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rcu: Remove return value from RCU_INIT_POINTER()

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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: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: David Howells <dhowells@redhat.com>
This commit is contained in:
Paul E. McKenney 2012-05-16 15:42:30 -07:00
parent d36cc701b2
commit d1b88eb9e3
1 changed files with 3 additions and 1 deletions
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4
include/linux/rcupdate.h
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@ -903,7 +903,9 @@ static inline notrace void rcu_read_unlock_sched_notrace(void)
* the reader-accessible portions of the linked structure.
*/
#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