simplify

Cc: Amerigo Wang <amwang@redhat.com>
Cc: Ben Woodard <bwoodard@llnl.gov>
Cc: Brian Behlendorf <behlendorf1@llnl.gov>
Cc: David Howells <dhowells@redhat.com>
Cc: WANG Cong <amwang@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

include/linux/rwsem-spinlock.h

@@ -68,9 +68,7 @@ extern int __down_write_trylock(struct rw_semaphore *sem);
 extern void __up_read(struct rw_semaphore *sem);
 extern void __up_write(struct rw_semaphore *sem);
 extern void __downgrade_write(struct rw_semaphore *sem);
-extern int __rwsem_is_locked(struct rw_semaphore *sem);
-
-#define rwsem_is_locked(sem) __rwsem_is_locked(sem)
+extern int rwsem_is_locked(struct rw_semaphore *sem);
 
 #endif /* __KERNEL__ */
 #endif /* _LINUX_RWSEM_SPINLOCK_H */

lib/rwsem-spinlock.c

@@ -17,7 +17,7 @@ struct rwsem_waiter {
 #define RWSEM_WAITING_FOR_WRITE	0x00000002
 };
 
-int __rwsem_is_locked(struct rw_semaphore *sem)
+int rwsem_is_locked(struct rw_semaphore *sem)
 {
 	int ret = 1;
 	unsigned long flags;
@@ -28,7 +28,7 @@ int __rwsem_is_locked(struct rw_semaphore *sem)
 	}
 	return ret;
 }
-EXPORT_SYMBOL(__rwsem_is_locked);
+EXPORT_SYMBOL(rwsem_is_locked);
 
 /*
  * initialise the semaphore