Add explanatory comments to vm tests.

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

diff --git a/src/tests/vm/mmap-twice.c b/src/tests/vm/mmap-twice.c
index 1eca7a47b4a98cb1b6ed5f0c7fe90861298c0d33..d277a37272fa61bfce5b60f72d50909612084be1 100644 (file)
--- a/src/tests/vm/mmap-twice.c
+++ b/src/tests/vm/mmap-twice.c
@@ -1,3 +1,6 @@
+/* Maps the same file into memory twice and verifies that the
+   same data is readable in both. */
+
 #include <string.h>
 #include <syscall.h>
 #include "tests/vm/sample.inc"