On Mon, Jun 27, 2022 at 1:52 PM Mike Kravetz <mike.kravetz@xxxxxxxxxx> wrote: > > On 06/24/22 17:36, James Houghton wrote: > > This is needed to handle PTL locking with high-granularity mapping. We > > won't always be using the PMD-level PTL even if we're using the 2M > > hugepage hstate. It's possible that we're dealing with 4K PTEs, in which > > case, we need to lock the PTL for the 4K PTE. > > I'm not really sure why this would be required. > Why not use the PMD level lock for 4K PTEs? Seems that would scale better > with less contention than using the more coarse mm lock. I should be using the PMD level lock for 4K PTEs, yeah. I'll work this into the next version of the series. Thanks both. > > -- > Mike Kravetz
