Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6.git] / arch / m68k / mm / fault.c
index ac48b6d2aff6049143546277a191d798005d7c73..d0e35cf99fc69a531cb0239277c3351525c13773 100644 (file)
@@ -99,7 +99,7 @@ int do_page_fault(struct pt_regs *regs, unsigned long address,
         * If we're in an interrupt or have no user
         * context, we must not take the fault..
         */
-       if (in_interrupt() || !mm)
+       if (in_atomic() || !mm)
                goto no_context;
 
        down_read(&mm->mmap_sem);
@@ -144,7 +144,7 @@ good_area:
                case 1:         /* read, present */
                        goto acc_err;
                case 0:         /* read, not present */
-                       if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
+                       if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE)))
                                goto acc_err;
        }
 
@@ -155,22 +155,21 @@ good_area:
         */
 
  survive:
-       fault = handle_mm_fault(mm, vma, address, write);
+       fault = handle_mm_fault(mm, vma, address, write ? FAULT_FLAG_WRITE : 0);
 #ifdef DEBUG
        printk("handle_mm_fault returns %d\n",fault);
 #endif
-       switch (fault) {
-       case 1:
-               current->min_flt++;
-               break;
-       case 2:
-               current->maj_flt++;
-               break;
-       case 0:
-               goto bus_err;
-       default:
-               goto out_of_memory;
+       if (unlikely(fault & VM_FAULT_ERROR)) {
+               if (fault & VM_FAULT_OOM)
+                       goto out_of_memory;
+               else if (fault & VM_FAULT_SIGBUS)
+                       goto bus_err;
+               BUG();
        }
+       if (fault & VM_FAULT_MAJOR)
+               current->maj_flt++;
+       else
+               current->min_flt++;
 
        up_read(&mm->mmap_sem);
        return 0;
@@ -181,7 +180,7 @@ good_area:
  */
 out_of_memory:
        up_read(&mm->mmap_sem);
-       if (current->pid == 1) {
+       if (is_global_init(current)) {
                yield();
                down_read(&mm->mmap_sem);
                goto survive;
@@ -189,7 +188,7 @@ out_of_memory:
 
        printk("VM: killing process %s\n", current->comm);
        if (user_mode(regs))
-               do_exit(SIGKILL);
+               do_group_exit(SIGKILL);
 
 no_context:
        current->thread.signo = SIGBUS;