On Mon, Nov 14, 2005 at 04:52:52PM +0200, Michael S. Tsirkin wrote:
> Index: linux-2.6.14-dontcopy/mm/madvise.c
> ===================================================================
> --- linux-2.6.14-dontcopy.orig/mm/madvise.c 2005-10-28 02:02:08.000000000 +0200
> +++ linux-2.6.14-dontcopy/mm/madvise.c 2005-11-14 17:04:51.000000000 +0200
> @@ -22,14 +22,20 @@ static long madvise_behavior(struct vm_a
> struct mm_struct * mm = vma->vm_mm;
> int error = 0;
> pgoff_t pgoff;
> - int new_flags = vma->vm_flags & ~VM_READHINTMASK;
> + int new_flags = vma->vm_flags;
>
> switch (behavior) {
> case MADV_SEQUENTIAL:
> - new_flags |= VM_SEQ_READ;
> + new_flags = (new_flags & ~VM_RAND_READ) | VM_SEQ_READ;
> break;
> case MADV_RANDOM:
> - new_flags |= VM_RAND_READ;
> + new_flags = (new_flags & ~VM_SEQ_READ) | VM_RAND_READ;
> + break;
> + case MADV_DONTFORK:
> + new_flags |= VM_DONTFORK;
> + break;
> + case MADV_DOFORK:
> + new_flags &= ~VM_DONTFORK;
> break;
> default:
> break;
It seams now you broke MADV_NORMAL.
--
Gleb.
-
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