Merge branch 'scale-amd64' of git+ssh://pdos.csail.mit.edu/home/am0/6.828/xv6 into scale-amd64

d7defe8f · Nickolai Zeldovich · 89f56ca2 · 1788d6c6 · d7defe8f
--- a/kernel/fs.cc
+++ b/kernel/fs.cc
@@ -666,6 +666,10 @@ dir_flush(struct inode *dp)
      off += sizeof(de);
      return false;
    });
+  if (dp->size != off) {
+    dp->size = off;
+    iupdate(dp);
+  }
 }
 // Look for a directory entry in a directory.