Re: [PATCH] vmap: add flag to allow lazy unmap to be disabled at runtime

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

On Tue, Jul 27, 2010 at 06:24:39PM +1000, Nick Piggin wrote:
> On Mon, Jul 26, 2010 at 01:24:51PM -0700, Jeremy Fitzhardinge wrote:
> > 
> > 
> > [ Nick, I forget if I sent this to you before.  Could you Ack it if it looks OK? Thanks, J ]
> > 
> > Add a flag to force lazy_max_pages() to zero to prevent any outstanding
> > mapped pages.  We'll need this for Xen.
> 
> You have sent this to me before, probably several times, and I always
> forget about it right as you send it again.
> 
> It's no problem merging something like this for Xen, although as you
> know I would love to see an approach where Xen would benefit from
> delayed flushing as well :)

Hey Nick,

So I've posted the patch with your Ack, in this thread
http://lkml.org/lkml/2010/7/27/246. I hope that is OK?

I think that using the delayed flushing is appropiate long-term.
I don't know that much about it but I will put it on the list of todo.
Fortunatly that list is actually shrinking (amazing!).