I decided to leave that out of today's talk (in this timeslot; it was
briefly discussed in Christoph & Mike's hugepage slot during the
performance miniconf).

I should have patches soon to implement that -- the problem is not on the
XArray side, but on the page cache side. Unless there's a bug, of course,
and DAX is the canary in the coal-mine here.

On Wed., Nov. 14, 2018, 15:46 William Kucharski <
william.kucharski@oracle.com wrote:

>
>
> > On Nov 13, 2018, at 11:02 AM, Matthew Wilcox <willy6545@gmail.com>
> wrote:
> >
> > Now that the XArray is in, it's time to make use of it. I've got a git
> tree which converts every current user of the radix tree to the XArray as
> well as converting some users of the IDA to the XArray.
> >
> > The XArray may also be a great replacement for a list_head in your data
> structure.
> >
> > I can also talk about currently inappropriate uses for the XArray and
> what I might do in future to make the XArray useful for more users.
>
> I hope you'll also cover multi-order usage, e.g. for huge page size
> support in the page cache.
>
> Thanks!
>     -- Bill