don't use fadvise if we have mmap

diff --git a/src/rrd_open.c b/src/rrd_open.c
index 6838b99c3c805d35584aab2741869e76500ae8d7..af875ccea8229f6ad002196b40ed8c49e5d6d4c2 100644 (file)
--- a/src/rrd_open.c
+++ b/src/rrd_open.c
@@ -236,7 +236,7 @@ rrd_file_t *rrd_open(
         lseek(rrd_simple_file->fd, 0, SEEK_SET);
     }
     no_lseek_necessary:
-#ifdef HAVE_POSIX_FADVISE
+#if !defined(HAVE_MMAP) && defined(HAVE_POSIX_FADVISE)
     /* In general we need no read-ahead when dealing with rrd_files.
        When we stop reading, it is highly unlikely that we start up again.
        In this manner we actually save time and diskaccess (and buffer cache).