for external ioengines. ARRAY_SIZE is a very common
declaration - e.g. Ceph is using this as well.

Signed-off-by: Daniel Gollub <[email protected]>
---
 fio.h |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/fio.h b/fio.h
index ed034cb..4d4af0a 100644
--- a/fio.h
+++ b/fio.h
@@ -618,7 +618,9 @@ static inline void td_io_u_free_notify(struct thread_data 
*td)
 extern const char *fio_get_arch_string(int);
 extern const char *fio_get_os_string(int);
 
+#ifdef FIO_INTERNAL
 #define ARRAY_SIZE(x) (sizeof((x)) / (sizeof((x)[0])))
+#endif
 
 enum {
        FIO_OUTPUT_TERSE        = 0,
-- 
1.7.10.4

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