On 3/7/26 7:20 AM, Andrew Morton wrote:

On Fri,  6 Mar 2026 14:43:36 +0800 Baolin Wang [off-list ref] wrote:

quoted

This is a follow-up to the previous work [1], to support batched checking
of the young flag for MGLRU.

Similarly, batched checking of young flag for large folios can improve
performance during large-folio reclamation when MGLRU is enabled. I
observed noticeable performance improvements (see patch 5) on an Arm64
machine that supports contiguous PTEs. All mm-selftests are passed.

Thanks, I updated mm-new with this.

quoted

Changes from v2:
v2: https://lore.kernel.org/all/cover.1772185080.git.baolin.wang@linux.alibaba.com/ (local)
  - Update the commit message of patch 5 (per David).
  - Fix some coding style issues (per David).
  - Remove 'cur_pte' variable in lru_gen_look_around() (per David).
  - Move 'ptes += nr;' to the suitable place in folio_referenced_one() (per David).
  - Add acked tag from David. Thanks.

Here's how v3 altered mm.git:

Thanks Andrew. LGTM.