On Fri, 8 Jun 2012 15:15:50 -0500 (CDT)
Christoph Lameter <cl@xxxxxxxxx> wrote:
> On Fri, 8 Jun 2012, Andrew Morton wrote:
>
> > OK. I assume this bug has been there for quite some time.
>
> Well the huge pages refcount tricks caused the issue.
>
> > How serious is it? Have people been reporting it in real workloads?
> > How to trigger it? IOW, does this need -stable backporting?
>
> Possibly.
that was all admirably indecisive.
> > Also, someone forgot to document these:
> >
> > struct {
> > unsigned inuse:16;
> > unsigned objects:15;
> > unsigned frozen:1;
> > };
>
> So far I thouight that the field names are pretty clear on their own.
Kidding? I had to grep the tree just to find out which subsystem owns
these.
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