Fix assertion.

diff --git a/src/userprog/pagedir.c b/src/userprog/pagedir.c
index c5c2e5dc44690804c84ebb9f436211fb0e909bc3..7d1018eadde49f68711ccfbd69e6060553804352 100644 (file)
--- a/src/userprog/pagedir.c
+++ b/src/userprog/pagedir.c
@@ -99,7 +99,7 @@ pagedir_set_page (uint32_t *pd, void *upage, void *kpage,
   ASSERT (pg_ofs (upage) == 0);
   ASSERT (pg_ofs (kpage) == 0);
   ASSERT (upage < PHYS_BASE);
-  ASSERT (lookup_page (pd, upage, false) == NULL);
+  ASSERT (pagedir_get_page (pd, upage) == NULL);
 
   pte = lookup_page (pd, upage, true);
   if (pte != NULL)