From: Ridong <ridong.chen@linux.dev>
To: Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>
Cc: David Hildenbrand <david@kernel.org>,
Michal Hocko <mhocko@kernel.org>, Qi Zheng <qi.zheng@linux.dev>,
Shakeel Butt <shakeel.butt@linux.dev>,
Lorenzo Stoakes <ljs@kernel.org>,
Kairui Song <kasong@tencent.com>, Barry Song <baohua@kernel.org>,
Axel Rasmussen <axelrasmussen@google.com>,
Yuanchu Xie <yuanchu@google.com>, Wei Xu <weixugc@google.com>,
Zhongkun He <hezhongkun.hzk@bytedance.com>,
Muchun Song <muchun.song@linux.dev>,
Davidlohr Bueso <dave@stgolabs.net>,
Roman Gushchin <roman.gushchin@linux.dev>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Ridong Chen <ridong.chen@linux.dev>,
Ridong Chen <chenridong@xiaomi.com>
Subject: [PATCH v3 0/4] mm/vmscan: fix swappiness=max and clean up per-node proactive reclaim
Date: Thu, 23 Jul 2026 12:57:14 +0800 [thread overview]
Message-ID: <20260723045718.2052070-1-ridong.chen@linux.dev> (raw)
From: Ridong Chen <chenridong@xiaomi.com>
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.
---
v2 -> v3:
- Update comments and commit message.
v1 -> v2:
- Collected review tags for patches 1-3
- Added patch 4 to fix the same issue in the MGLRU path.
Ridong Chen (4):
mm/vmscan: fix anon-only reclaim evicting file pages when
swappiness=max
mm: vmscan: propagate real error code from per-node proactive reclaim
mm: vmscan: drop unused gfp_mask parameter from __node_reclaim()
mm/mglru: fix anon-only reclaim evicting file pages when
swappiness=max
mm/vmscan.c | 54 +++++++++++++++++++++++++++++++++++++++--------------
1 file changed, 40 insertions(+), 14 deletions(-)
--
2.34.1
next reply other threads:[~2026-07-23 4:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-23 4:57 Ridong [this message]
2026-07-23 4:57 ` [PATCH v3 1/4] mm/vmscan: fix anon-only reclaim evicting file pages when swappiness=max Ridong
2026-07-23 4:57 ` [PATCH v3 2/4] mm: vmscan: propagate real error code from per-node proactive reclaim Ridong
2026-07-23 4:57 ` [PATCH v3 3/4] mm: vmscan: drop unused gfp_mask parameter from __node_reclaim() Ridong
2026-07-23 4:57 ` [PATCH v3 4/4] mm/mglru: fix anon-only reclaim evicting file pages when swappiness=max Ridong
2026-07-23 8:57 ` Barry Song
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