From b0a898fec2cfa59feae5bdbcbf472080acfa7e14 Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Date: Mon, 10 Apr 2017 17:29:48 -0500
Subject: [PATCH] libxfs: fix xfs_extent_busy_flush macro definition

xfs_extent_busy_flush is a void function, so don't reduce it to zero.
This shuts up gcc warnings about do-nothing statements.

[sandeen: switch to more common ((void)0) paradigm]

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
---
 libxfs/libxfs_priv.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libxfs/libxfs_priv.h b/libxfs/libxfs_priv.h
index c2d4494b6..23875e5d5 100644
--- a/libxfs/libxfs_priv.h
+++ b/libxfs/libxfs_priv.h
@@ -419,7 +419,7 @@ roundup_64(__uint64_t x, __uint32_t y)
 	*(busy_gen) = __foo;					\
 	false;							\
 })
-#define xfs_extent_busy_flush(mp,pag,busy_gen)		(0)
+#define xfs_extent_busy_flush(mp,pag,busy_gen)		((void)(0))
 
 /* avoid unused variable warning */
 #define xfs_alloc_busy_insert(tp,ag,b,len)	({	\
-- 
2.47.2