Add explanatory comments to vm tests.

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

diff --git a/src/tests/vm/mmap-write.c b/src/tests/vm/mmap-write.c
index b231282f96e4b1dc3c485d14b5a4e0aa168bf9ac..46e804349367aab3c0259bdf1f5ff87dddc1d2be 100644 (file)
--- a/src/tests/vm/mmap-write.c
+++ b/src/tests/vm/mmap-write.c
@@ -1,3 +1,7 @@
+/* Writes to a file through a mapping, and unmaps the file,
+   then reads the data in the file back using the read system
+   call to verify. */
+
 #include <string.h>
 #include <syscall.h>
 #include "tests/vm/sample.inc"