Re: [PATCH] dax: Fix missed PMD wakeups

[Matthew Wilcox]

On Wed, Jul 03, 2019 at 12:24:54AM -0700, Dan Williams wrote:
> This fix may increase waitqueue contention, but a fix for that is saved
> for a larger rework. In the meantime this fix is suitable for -stable
> backports.

I think this is too big for what it is; just the two-line patch to stop
incorporating the low bits of the PTE would be more appropriate.