From 71deafc693ad77947f5c3f72e7247eefcb97bd63 Mon Sep 17 00:00:00 2001
From: Roman Pen <r.peniaev@gmail.com>
Date: Wed, 19 Aug 2015 12:33:10 +0200
Subject: [PATCH] add FIELD_SIZE macro to calculate the size of the specified
 field

Will use this stuff later.

Signed-off-by: Roman Pen <r.peniaev@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---
 fio.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fio.h b/fio.h
index 53d82560..a00e8f23 100644
--- a/fio.h
+++ b/fio.h
@@ -668,7 +668,8 @@ 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])))
+#define ARRAY_SIZE(x)    (sizeof((x)) / (sizeof((x)[0])))
+#define FIELD_SIZE(s, f) (sizeof(((typeof(s))0)->f))
 #endif
 
 enum {
-- 
2.25.1