No need to do fadvise() on O_DIRECT/raw IO

[fio.git] / os.h

diff --git a/os.h b/os.h
index b5f43e593e6251efb179dc2dd22ca1ecdb59e3e3..da80fbd4f7207e66a0cbb9821bdfabcf389f6ebf 100644 (file)
--- a/os.h
+++ b/os.h
@@ -51,7 +51,13 @@
 #define SHM_HUGETLB                    0
 #define FIO_HUGE_PAGE                  0
 #else
-#define FIO_HUGE_PAGE                  (2048 * 1024)
+#define FIO_HUGE_PAGE                  (4096 * 1024)
+#endif
+
+#if __GNUC__ < 3
+#define __must_check
+#else
+#define __must_check                   __attribute__((warn_unused_result))
 #endif
 
 #endif