Add --readonly option

[fio.git] / os / os.h

diff --git a/os/os.h b/os/os.h
index 660dcc5202dc948e430224bdc33591dda9591dbf..42cd63d020aedf28e91114ef171697e4f393b6e1 100644 (file)
--- a/os/os.h
+++ b/os/os.h
@@ -27,9 +27,11 @@
 #ifndef FIO_HAVE_FADVISE
 #define fadvise(fd, off, len, advice)  (0)
 
+#ifndef POSIX_FADV_DONTNEED
 #define POSIX_FADV_DONTNEED    (0)
 #define POSIX_FADV_SEQUENTIAL  (0)
 #define POSIX_FADV_RANDOM      (0)
+#endif
 #endif /* FIO_HAVE_FADVISE */
 
 #ifndef FIO_HAVE_CPU_AFFINITY
@@ -49,7 +51,9 @@
 
 #ifndef FIO_HAVE_HUGETLB
 #define SHM_HUGETLB                    0
+#ifndef FIO_HUGE_PAGE
 #define FIO_HUGE_PAGE                  0
+#endif
 #else
 #ifndef FIO_HUGE_PAGE
 #define FIO_HUGE_PAGE                  4194304