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>

diff --git a/os-linux.h b/os-linux.h
index 84919539e7a711e6c7d724705314a2c6e03d707b..d3b2e931e8b754eaecfd06af87748225d5e168b9 100644 (file)
--- a/os-linux.h
+++ b/os-linux.h
@@ -124,10 +124,7 @@ enum {
 
 static inline int blockdev_invalidate_cache(int fd)
 {
 
 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)
 }
 
 static inline int blockdev_size(int fd, unsigned long long *bytes)