From: Baolin Wang <baolin.wang@linux.alibaba.com>
To: akpm@linux-foundation.org, david@kernel.org, hannes@cmpxchg.org,
kasong@tencent.com
Cc: baohua@kernel.org, axelrasmussen@google.com, yuanchu@google.com,
weixugc@google.com, baoquan.he@linux.dev, qi.zheng@linux.dev,
shakeel.butt@linux.dev, mhocko@kernel.org,
baolin.wang@linux.alibaba.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] mm: mglru: use pte_table_clamped_end() helper to calculate the end
Date: Thu, 12 Nov 2026 19:12:39 +0800 [thread overview]
Message-ID: <b2386c5da61f9a15e60daa421b033bc1e0bcdd41.1794481498.git.baolin.wang@linux.alibaba.com> (raw)
Use pte_table_clamped_end() to clamp the range to the PTE table and VMA
boundaries when batch-checking young flags, making the code more readable.
No functional changes intended.
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
---
Based on mm/core.git for-next branch.
Note that this was found while reviewing David's series:
https://lore.kernel.org/all/c31cc8a0-c098-4784-a843-f13f51914094@linux.alibaba.com/
---
mm/vmscan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 5495d9be90e8..804d4188e7b4 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4470,7 +4470,7 @@ bool lru_gen_look_around(struct page_vma_mapped_walk *pvmw, unsigned int nr)
walk = current->reclaim_state ? current->reclaim_state->mm_walk : NULL;
start = max(addr & PMD_MASK, vma->vm_start);
- end = min(addr | ~PMD_MASK, vma->vm_end - 1) + 1;
+ end = pte_table_clamped_end(addr, vma->vm_end);
if (end - start == PAGE_SIZE)
return true;
--
2.47.3
reply other threads:[~2026-11-12 11:13 UTC|newest]
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