m32r: invoke oom-killer from page fault
Nick Piggin [Fri, 4 Jun 2010 21:14:49 +0000 (14:14 -0700)]
As explained in commit 1c0fe6e3bd ("mm: invoke oom-killer from page
fault") , we want to call the architecture independent oom killer when
getting an unexplained OOM from handle_mm_fault, rather than simply
killing current.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/m32r/mm/fault.c

index 28ee389..b8ec002 100644 (file)
@@ -188,7 +188,6 @@ good_area:
        if ((error_code & ACE_INSTRUCTION) && !(vma->vm_flags & VM_EXEC))
          goto bad_area;
 
-survive:
        /*
         * If for any reason at all we couldn't handle the fault,
         * make sure we exit gracefully rather than endlessly redo
@@ -271,15 +270,10 @@ no_context:
  */
 out_of_memory:
        up_read(&mm->mmap_sem);
-       if (is_global_init(tsk)) {
-               yield();
-               down_read(&mm->mmap_sem);
-               goto survive;
-       }
-       printk("VM: killing process %s\n", tsk->comm);
-       if (error_code & ACE_USERMODE)
-               do_group_exit(SIGKILL);
-       goto no_context;
+       if (!(error_code & ACE_USERMODE))
+               goto no_context;
+       pagefault_out_of_memory();
+       return;
 
 do_sigbus:
        up_read(&mm->mmap_sem);