On Wed, Jul 3, 2019 at 5:17 AM Matthew Wilcox willy@infradead.org wrote:
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.
Sufficient, yes, "appropriate", not so sure. All those comments about pmd entry size are stale after this change.