On Tue, 10 Sep 2024 17:08:30 -0600 Jens Axboe <axboe@xxxxxxxxx> wrote: > > Fixes are in git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-stable > > > > c2a967f6ab0e mm/hugetlb_vmemmap: don't synchronize_rcu() without HVO > > c0f398c3b2cf mm/hugetlb_vmemmap: batch HVO work when demoting > > > > Additional improvements from mm-stable that may or may not help your test case: > > > > e98337d11bbd mm/contig_alloc: support __GFP_COMP > > 463586e9ff39 mm/cma: add cma_{alloc,free}_folio() > > cf54f310d0d3 mm/hugetlb: use __GFP_COMP for gigantic folios > > I didn't pick patches, just pulled all of mm-stable - yep that fixes it > for me, no longer spending 60+% of the runtime during exit. I trust > these are heading to stable? None of these are tagged for -stable backporting. We can later request a backport without the cc:stable tag, although narrowing down the required patches would be good.