From: qinyu <qin.yuA@h3c.com>
Date: Tue, 3 Feb 2026 10:26:49 +0000 (+0800)
Subject: mm/page_idle.c: remove redundant mmu notifier in aging code
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1c7b8d8a51cc1022bcf6604adf3f1963f8162f3f;p=thirdparty%2Fkernel%2Fstable.git

mm/page_idle.c: remove redundant mmu notifier in aging code

Now we have mmu_notifier_clear_young immediately follows
pmdp_clear_young_notify which internally calls mmu_notifier_clear_young,
this is redundant.  change it with non-notify variant and keep consistent
with ptep aging code.

Link: https://lkml.kernel.org/r/20260203102649.2486836-1-qin.yuA@h3c.com
Signed-off-by: qinyu <qin.yuA@h3c.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Acked-by: David Hildenbrand (arm) <david@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/page_idle.c b/mm/page_idle.c
index 96bb94c7b6c3..9c67cbac2965 100644
--- a/mm/page_idle.c
+++ b/mm/page_idle.c
@@ -74,7 +74,7 @@ static bool page_idle_clear_pte_refs_one(struct folio *folio,
 			pmd_t pmdval = pmdp_get(pvmw.pmd);
 
 			if (likely(pmd_present(pmdval)))
-				referenced |= pmdp_clear_young_notify(vma, addr, pvmw.pmd);
+				referenced |= pmdp_test_and_clear_young(vma, addr, pvmw.pmd);
 			referenced |= mmu_notifier_clear_young(vma->vm_mm, addr, addr + PMD_SIZE);
 		} else {
 			/* unexpected pmd-mapped page? */