From: Johannes Weiner <hannes@cmpxchg.org>
To: Ridong <ridong.chen@linux.dev>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Kairui Song <kasong@tencent.com>, Qi Zheng <qi.zheng@linux.dev>,
Shakeel Butt <shakeel.butt@linux.dev>,
Barry Song <baohua@kernel.org>,
Axel Rasmussen <axelrasmussen@google.com>,
Yuanchu Xie <yuanchu@google.com>, Wei Xu <weixugc@google.com>,
David Hildenbrand <david@kernel.org>,
Michal Hocko <mhocko@kernel.org>,
Lorenzo Stoakes <ljs@kernel.org>,
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 <chenridong@xiaomi.com>
Subject: Re: [PATCH 2/3] mm: vmscan: propagate real error code from per-node proactive reclaim
Date: Fri, 17 Jul 2026 14:16:45 +0200 [thread overview]
Message-ID: <20260717121645.GD6843@cmpxchg.org> (raw)
In-Reply-To: <20260717113300.214717-3-ridong.chen@linux.dev>
On Fri, Jul 17, 2026 at 07:32:59PM +0800, Ridong wrote:
> From: Ridong Chen <chenridong@xiaomi.com>
>
> It has been observed that per-node proactive reclaim always returns
> -EAGAIN when any error occurs. As discussed in the mailing list [1],
> the interface should distinguish between cases where no reclaimable
> memory is left and where another entity is concurrently using the
> same interface. Propagate the real error code, consistent with how
> memcg proactive reclaim handles errors.
>
> [1] https://lore.kernel.org/all/20250717235604.2atyx2aobwowpge3@offworld/T/#m3514718be82a31b05726a49da9b61fbfc69a589e
>
> Fixes: b980077899ea ("mm: introduce per-node proactive reclaim interface")
> Signed-off-by: Ridong Chen <chenridong@xiaomi.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
next prev parent reply other threads:[~2026-07-17 12:16 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-17 11:32 [PATCH 0/3] mm/vmscan: fix swappiness=max and clean up per-node proactive reclaim Ridong
2026-07-17 11:32 ` [PATCH 1/3] mm/vmscan: fix anon-only reclaim evicting file pages when swappiness=max Ridong
2026-07-17 12:04 ` Johannes Weiner
2026-07-17 12:57 ` Muchun Song
2026-07-17 16:37 ` Shakeel Butt
2026-07-17 11:32 ` [PATCH 2/3] mm: vmscan: propagate real error code from per-node proactive reclaim Ridong
2026-07-17 12:16 ` Johannes Weiner [this message]
2026-07-17 13:00 ` Muchun Song
2026-07-17 16:38 ` Shakeel Butt
2026-07-17 11:33 ` [PATCH 3/3] mm: vmscan: drop unused gfp_mask parameter from __node_reclaim() Ridong
2026-07-17 12:17 ` Johannes Weiner
2026-07-17 13:02 ` Muchun Song
2026-07-17 16:39 ` Shakeel Butt
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