xv6

commit cf7b6702934018bfbf6955c3d413ac43024a96ad
parent 82bb0b56c62b3595d04e6224a67397f221298166
Author: Austin Clements <amdragon@mit.edu>
Date:   Fri,  2 Sep 2011 14:11:16 -0400

Make mappages fit on the page

Diffstat:
M
vm.c
 | 
3
+--

1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/vm.c b/vm.c
@@ -77,8 +77,7 @@ mappages(pde_t *pgdir, void *va, uint size, uint pa,
   a = (char *) PGROUNDDOWN((uint) va);
   last = (char *) PGROUNDDOWN(((uint) va) + size - 1);
   for(;;){
-    pte = walkpgdir(pgdir, a, alloc);
-    if(pte == 0)
+    if((pte = walkpgdir(pgdir, a, alloc) == 0)
       return -1;
     if(*pte & PTE_P)
       panic("remap");