On Tue, Nov 08, 2005 at 11:34:07PM +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 2005-11-08 23:28:56.000000000 +0200
> @@ -31,6 +31,12 @@ static long madvise_behavior(struct vm_a
> case MADV_RANDOM:
> new_flags |= VM_RAND_READ;
> break;
> + case MADV_DONTCOPY:
> + new_flags |= VM_UDONTCOPY;
> + break;
> + case MADV_DOCOPY:
> + new_flags &= ~VM_UDONTCOPY;
> + break;
> default:
> break;
> }
I think you are removing VM_RAND_READ/VM_SEQ_READ here.
Also perhapse we should skip VM_SHARED VMAs?
--
Gleb.
-
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