On Tue, Aug 27, 2013 at 12:37:18PM +0400, Cyrill Gorcunov wrote:
> On Mon, Aug 26, 2013 at 06:28:33PM -0400, Dave Jones wrote:
> > >
> > > I've not tried matching up bits with Dave's reports, and just going
> > > into a meeting now, but this patch looks worth a try: probably Cyrill
> > > can improve it meanwhile to what he actually wants there (I'm
> > > surprised anything special is needed for just moving a pte).
> > >
> > > Hugh
> > >
> > > --- 3.11-rc7/mm/mremap.c 2013-07-14 17:10:16.640003652 -0700
> > > +++ linux/mm/mremap.c 2013-08-26 14:46:14.460027627 -0700
> > > @@ -126,7 +126,7 @@ static void move_ptes(struct vm_area_str
> > > continue;
> > > pte = ptep_get_and_clear(mm, old_addr, old_pte);
> > > pte = move_pte(pte, new_vma->vm_page_prot, old_addr,
> > new_addr);
> > > - set_pte_at(mm, new_addr, new_pte,
> > pte_mksoft_dirty(pte));
> > > + set_pte_at(mm, new_addr, new_pte, pte);
> > > }
> >
> > I'll give this a shot once I'm done with the bisect.
>
> I managed to trigger the issue as well. The patch below fixes it.
> Dave, could you please give it a shot once time permit?
Seems to do the trick.
Tested-by: Dave Jones <da...@fedoraproject.org>
Dave
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