The patch titled
Subject: mm/vmscan.c:3498: undefined reference to `pmdp_test_and_clear_young'
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-multi-gen-lru-use-pteppmdp_clear_young_notify-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-multi-gen-lru-use-pteppmdp_clear_young_notify-fix.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: James Houghton <jthoughton@xxxxxxxxxx>
Subject: mm/vmscan.c:3498: undefined reference to `pmdp_test_and_clear_young'
Date: Fri, 25 Oct 2024 19:21:06 +0000
fix link-time error
ld: mm/vmscan.o: in function `walk_pmd_range_locked':
>> mm/vmscan.c:3498: undefined reference to `pmdp_test_and_clear_young'
Link: https://lore.kernel.org/linux-mm/20241019012940.3656292-3-jthoughton@xxxxxxxxxx/
Link: https://lkml.kernel.org/r/20241025192106.957236-1-jthoughton@xxxxxxxxxx
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202410252141.djLwbAYF-lkp@xxxxxxxxx/
Signed-off-by: James Houghton <jthoughton@xxxxxxxxxx>
Cc: Axel Rasmussen <axelrasmussen@xxxxxxxxxx>
Cc: David Matlack <dmatlack@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: David Stevens <stevensd@xxxxxxxxxx>
Cc: Oliver Upton <oliver.upton@xxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Sean Christopherson <seanjc@xxxxxxxxxx>
Cc: Wei Xu <weixugc@xxxxxxxxxx>
Cc: Yu Zhao <yuzhao@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmscan.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/mm/vmscan.c~mm-multi-gen-lru-use-pteppmdp_clear_young_notify-fix
+++ a/mm/vmscan.c
@@ -3480,7 +3480,10 @@ static void walk_pmd_range_locked(pud_t
/* don't round down the first address */
addr = i ? (*first & PMD_MASK) + i * PMD_SIZE : *first;
- if (pmd_present(pmd[i]) && !pmd_trans_huge(pmd[i])) {
+ if (!pmd_present(pmd[i]))
+ goto next;
+
+ if (!pmd_trans_huge(pmd[i])) {
if (!walk->force_scan && should_clear_pmd_young() &&
!mm_has_notifiers(args->mm))
pmdp_test_and_clear_young(vma, addr, pmd + i);
_
Patches currently in -mm which might be from jthoughton@xxxxxxxxxx are
mm-multi-gen-lru-use-pteppmdp_clear_young_notify-fix.patch
mm-add-missing-mmu_notifier_clear_young-for-mmu_notifier.patch
