Issue #12102: Document that buffered files must be flushed before being used
with mmap. Patch by Steffen Daode Nurpmeso.
diff --git a/Doc/ACKS.txt b/Doc/ACKS.txt
index 1ad18f1..c528247 100644
--- a/Doc/ACKS.txt
+++ b/Doc/ACKS.txt
@@ -144,6 +144,7 @@
    * Sjoerd Mullender
    * Dale Nagata
    * Michal Nowikowski
+   * Steffen Daode Nurpmeso
    * Ng Pheng Siong
    * Koray Oner
    * Tomas Oppelstrup