On Thu, Jun 11, 2026 at 10:24 AM David Hildenbrand (Arm) <[email protected]> wrote: > > On 6/11/26 18:09, David Hildenbrand (Arm) wrote: > > On 6/11/26 17:58, Nico Pache wrote: > >> Hi, > >> > >> While testing my mTHP code I noticed that mm selftests caused an > >> accounting error in > >> /sys/kernel/mm/transparent_hugepage/hugepages-2048kB/stats/nr_anon > >> > >> At first I thought I might have caused a regression, but when retesting > >> with 7.1-rc5 (without my code), the issue was still present. > >> > >> This issue occurs in two mm selftests: > >> 1) hmm test > >> 2) migration - private_anon_htlb test > >> > >> I spoke to David about this and he suggested the following diff which > >> seems to have solved both issues. > >> > >> David would you like to send a formal patch or patches? > >> > >> Cheers, > >> -- Nico > >> > >> Diff for (1) > >> > >> diff --git a/mm/memremap.c b/mm/memremap.c > >> index 053842d45cb1..683a77dd679d 100644 > >> --- a/mm/memremap.c > >> +++ b/mm/memremap.c > >> @@ -425,6 +425,7 @@ void free_zone_device_folio(struct folio *folio) > >> mem_cgroup_uncharge(folio); > >> > >> if (folio_test_anon(folio)) { > >> + mod_mthp_stat(folio_order(folio), MTHP_STAT_NR_ANON, -1); > >> for (i = 0; i < nr; i++) > >> __ClearPageAnonExclusive(folio_page(folio, i)); > >> } > > > > Wasn't there another issue with hugetlb? > > Just realized that you sent this, but somehow my mail client got confused and > hid it.
Yeah, sorry. Thanks for the message about the email client setting I'm probably missing. Thunderbird may actually work for me now :) Cheers, -- Nico > > -- > Cheers, > > David >
