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ti7HDxXArlfu/ShuLL3UmpokPYA48+4dLFXP579zi6jMQgFYHrszLzVAmpsG4lCxq/D+19a3VY+8yHco5JyizQiOD/GAXc6+T+2pCWR8hEQelahnWR/s7y/t3NZx2TpoTB9f4lpLzsd2uZzAkidYVXKIiPn0IG6hUo6egoGGFCsaGowhJ0K+tGoPwNIUNx6d Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue Sep 8, 2026 at 12:59 PM EDT, David Hildenbrand (Arm) wrote: > On 9/8/26 04:56, Zi Yan wrote: >> folio_test_fs_private() wraps folio->private !=3D NULL check and exclude= s >> swapcache and hugetlb folios, since swapcache uses swp_entry_t overlappi= ng >> with folio->private and hugetlb sets its own flags in folio->private. >> Replace open code with the helper, since core MM does this check >> frequently. >>=20 >> No functional change intended. >>=20 >> Assisted-by: Claude:claude-opus-4-8 >> Assisted-by: Codex:gpt-5 >> Signed-off-by: Zi Yan >> To: Andrew Morton >> To: David Hildenbrand >> To: Steven Rostedt >> To: Masami Hiramatsu >> To: Lorenzo Stoakes >> Cc: "Liam R. Howlett" >> Cc: Vlastimil Babka >> Cc: Mike Rapoport >> Cc: Suren Baghdasaryan >> Cc: Michal Hocko >> Cc: Mathieu Desnoyers >> Cc: Zi Yan >> Cc: Baolin Wang >> Cc: Nico Pache >> Cc: Ryan Roberts >> Cc: Dev Jain >> Cc: Barry Song >> Cc: Lance Yang >> Cc: Usama Arif >> Cc: Matthew Brost >> Cc: Joshua Hahn >> Cc: Rakie Kim >> Cc: Byungchul Park >> Cc: Gregory Price >> Cc: Ying Huang >> Cc: Alistair Popple >> Cc: linux-kernel@vger.kernel.org >> Cc: linux-fsdevel@vger.kernel.org >> Cc: linux-mm@kvack.org >> Cc: linux-trace-kernel@vger.kernel.org >> --- >> include/linux/mm.h | 4 +--- >> include/linux/page-flags.h | 26 +++++++++++++++++++++++--- >> include/trace/events/pagemap.h | 4 +--- >> mm/huge_memory.c | 4 +--- >> mm/migrate.c | 3 +-- >> mm/page-writeback.c | 5 +---- >> mm/vmscan.c | 3 +-- >> 7 files changed, 29 insertions(+), 20 deletions(-) >>=20 >> diff --git a/include/linux/mm.h b/include/linux/mm.h >> index 5eb8a62fafb56..c861525cda83f 100644 >> --- a/include/linux/mm.h >> +++ b/include/linux/mm.h >> @@ -3053,9 +3053,7 @@ static inline int folio_expected_ref_count(const s= truct folio *folio) >> * One reference from filesystem private data. >> * Use data_race() since folio might not be locked. >> */ >> - ref_count +=3D data_race(folio_test_private(folio)) && >> - !folio_test_hugetlb(folio) && >> - !folio_test_swapbacked(folio); >> + ref_count +=3D data_race(folio_test_fs_private(folio)); >> } > > Lol :) That's what I meant with folio_has_attached_private() > > (I think I prefer that name as it matches folio_attach_private(), but I m= ight be > biased ;) ) I can rename it, since it sounds more generic than "fs private". > > > This really should be sqashed into the previous patch, OR, have a prep pa= tch > that only replaces these instances and uses folio_test_private() until yo= u > convert it to folio->private in the second patch. > > In short: touch these call sites only once, not twice in a row. Will squash it to the prior patch. --=20 Best Regards, Yan, Zi