Re: [RFC] page fault retry with NOPAGE_RETRY

Andrew Morton
2006-09-21T22:41:05Z

On Fri, 22 Sep 2006 08:05:04 +1000
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> > So I think there's a nasty DoS here if we permit infinite retries. But
> > it's not just that - there might be other situations under really heavy
> > memory pressure where livelocks like this can occur. It's just a general
> > robustness-of-implementation issue.
>
> Got it. Now, changing args to no_page() will be a pretty big task....
>

Not as big as removing the pt_regs arg from every interrupt handler ;)

But pretty mechanical. Problem is, I don't think we have our mechanic.