[folded-merged] mm-centralizefix-comments-about-compound_mapcount-in-new-sync_with_folio_pmd_zap-fix.patch removed from -mm tree

[folded-merged] mm-centralizefix-comments-about-compound_mapcount-in-new-sync_with_folio_pmd_zap-fix.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm-centralizefix-comments-about-compound_mapcount-in-new-sync_with_folio_pmd_zap-fix
has been removed from the -mm tree.  Its filename was
     mm-centralizefix-comments-about-compound_mapcount-in-new-sync_with_folio_pmd_zap-fix.patch

This patch was dropped because it was folded into mm-centralizefix-comments-about-compound_mapcount-in-new-sync_with_folio_pmd_zap.patch

------------------------------------------------------
From: Andrew Morton <akpm@linux-foundation.org>
Subject: mm-centralizefix-comments-about-compound_mapcount-in-new-sync_with_folio_pmd_zap-fix
Date: Mon Feb 23 12:09:18 PM PST 2026

update comment per Matthew and David

Cc: "David Hildenbrand (Arm)" <david@kernel.org>
Cc: Harry Yoo <harry.yoo@oracle.com>
Cc: Jann Horn <jannh@google.com>
Cc: Liam Howlett <Liam.Howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/internal.h |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/mm/internal.h~mm-centralizefix-comments-about-compound_mapcount-in-new-sync_with_folio_pmd_zap-fix
+++ a/mm/internal.h
@@ -521,10 +521,10 @@ void pmd_install(struct mm_struct *mm, p
  * @mm: The mm_struct.
  * @pmdp: Pointer to the pmd that was found to be pmd_none().
  *
- * When we stumble over a pmd_none() without holding the PTL while unmapping a
- * folio that could have been mapped at that PMD, it could be that concurrent
- * zapping of the PMD is not complete yet. While the PMD might be pmd_none()
- * already, the folio might still appear to be mapped (folio_mapped()).
+ * When we find a pmd_none() while unmapping a folio without holding the PTL,
+ * zap_huge_pmd() may have cleared the PMD but not yet modified the folio to
+ * indicate that it's unmapped. Skipping the PMD without synchronization could
+ * make folio unmapping code assume that unmapping failed.
  *
  * Wait for concurrent zapping to complete by grabbing the PTL.
  */
_

Patches currently in -mm which might be from akpm@linux-foundation.org are

mm-centralizefix-comments-about-compound_mapcount-in-new-sync_with_folio_pmd_zap.patch
mm-rename-zap_page_range_single-to-zap_vma_range-fix.patch
mm-memcontrol-convert-objcg-to-be-per-memcg-per-node-type-fix-fix.patch
mm-page_reporting-add-page_reporting_order_unspecified-fix.patch
mm-rename-zone-lock-to-zone-_lock-fix.patch
mm-switch-the-rmap-lock-held-option-off-in-compat-layer-fix.patch
selftests-mm-add-uffdio_move-huge-zeropage-pmd-regression-test-fix.patch
kernel-panic-increase-buffer-size-for-verbose-taint-logging-fix.patch
decode_stacktrace-decode-caller-address-checkpatch-fixes.patch
lib-list_sort-remove-dummy-cmp-calls-to-speed-up-merge_final-fix.patch