Re: [PATCH v3 0/4] mm/vmscan: fix swappiness=max and clean up per-node proactive reclaim

From: Ridong Chen

Date: Thu Jul 23 2026 - 22:28:58 EST




On 7/24/2026 8:18 AM, Andrew Morton wrote:
On Thu, 23 Jul 2026 12:57:14 +0800 Ridong <ridong.chen@xxxxxxxxx> wrote:

Fixes and one cleanup.

Patch 1 fixes "swappiness=max": the anon-only test in get_scan_count()
sat after the "cannot reclaim anon" check, so when no anon was
reclaimable the request fell back to SCAN_FILE and evicted page cache
instead.

Patch 2 fixes reclaim_store() collapsing every error into -EAGAIN, so
callers can no longer tell an invalid argument from a busy interface;
propagate the real error code, matching the memcg path.

Patch 3 drops the now-unused gfp_mask parameter from __node_reclaim().

Patch 4 fixes the same "swappiness=max" issue for MGLRU.

Thanks. AI review might have found several pre-existing issues which
might interest the maintainers. Also a suggestion against your [4/4]:

https://sashiko.dev/#/patchset/20260723045718.2052070-1-ridong.chen@xxxxxxxxx


Thanks. I will update patch 4/4 as suggested.

--
Best regards
Ridong