Type in SPLICE_F_UNMAP ifdef

Should be an ifndef obviously, not ifdef.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/os/os-linux.h b/os/os-linux.h
index 1bf7e62a42ca8840fcfeef4ef7bc668476084948..dd783be3a61e63ee5955ffa121a5831c2413fe07 100644 (file)
--- a/os/os-linux.h
+++ b/os/os-linux.h
@@ -98,7 +98,7 @@ static inline int vmsplice(int fd, const struct iovec *iov,
 }
 #endif
 
 }
 #endif
 

-#ifdef SPLICE_F_UNMAP
+#ifndef SPLICE_F_UNMAP

 #define SPLICE_F_UNMAP (0x10)
 #endif
 
 #define SPLICE_F_UNMAP (0x10)
 #endif