diff --git a/kernel/buf.h b/kernel/buf.h
index 4a3a39d..4616e9e 100644
--- a/kernel/buf.h
+++ b/kernel/buf.h
@@ -7,7 +7,6 @@ struct buf {
   uint refcnt;
   struct buf *prev; // LRU cache list
   struct buf *next;
-  struct buf *qnext; // disk queue
   uchar data[BSIZE];
 };