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: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: David Howells <dhowells@redhat.com>
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index ffe24c0..abf44d8 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -903,7 +903,9 @@
* 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