Add explanatory comments to vm tests.

[pintos-anon] / src / tests / vm / mmap-shuffle.c

diff --git a/src/tests/vm/mmap-shuffle.c b/src/tests/vm/mmap-shuffle.c
index 8ba625f81a0d7d999a908deb076df251685835e8..29921ad2919e74257428efe628d344e954fdcde2 100644 (file)
--- a/src/tests/vm/mmap-shuffle.c
+++ b/src/tests/vm/mmap-shuffle.c
@@ -1,3 +1,6 @@
+/* Creates a 128 kB file and repeatedly shuffles data in it
+   through a memory mapping. */
+
 #include <stdio.h>
 #include <string.h>
 #include <syscall.h>