From a16211bb932067978f74606eb5d3f92e5227eee2 Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Thu, 15 Mar 2007 11:35:33 +0100
Subject: [PATCH] blockdev_invalidate_cache(): return -1 for error

This follows the normal system calls, and makes fio pickup errno
appropriately.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
 os-linux.h | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/os-linux.h b/os-linux.h
index 84919539..d3b2e931 100644
--- a/os-linux.h
+++ b/os-linux.h
@@ -124,10 +124,7 @@ enum {
 
 static inline int blockdev_invalidate_cache(int fd)
 {
-	if (!ioctl(fd, BLKFLSBUF))
-		return 0;
-
-	return errno;
+	return ioctl(fd, BLKFLSBUF);
 }
 
 static inline int blockdev_size(int fd, unsigned long long *bytes)
-- 
2.25.1