1 files changed, 1 insertions, 0 deletions

diff --git a/threads/thread.h b/threads/thread.h
index 8cfafe6..fd4f8a6 100644
--- a/threads/thread.h
+++ b/threads/thread.h
@@ -111,6 +111,7 @@ struct thread
     int is_donated;                     /* flag if threads priority has been donated by another thread */
     int saved_priority;                 /* saved base priority in case of priority dontation */
     struct list locks;                  /* list of locks the thread currently holds */
+    struct lock *blocked_lock;          /* lock the thread currently trys to accquire (but hasn't yet) */
   };
 
 /* If false (default), use round-robin scheduler.