Thanks to Jeehoon Kang <jeehoon.kang@sf.snu.ac.kr>

906610ef · Frans Kaashoek · 8d1f9963 · 906610ef
--- a/memide.c
+++ b/memide.c
@@ -9,6 +9,7 @@
 #include "x86.h"
 #include "traps.h"
 #include "spinlock.h"
+#include "sleeplock.h"
 #include "fs.h"
 #include "buf.h"