From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-187.mta1.migadu.com (out-187.mta1.migadu.com [95.215.58.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 97B352DB794 for ; Sat, 18 Jul 2026 09:53:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.187 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784368437; cv=none; b=tw6cHVa5S7lvpPV4gl+Qyh4m9i0t/1vgyDk6BCh5xr7lc4pUsgccX0EvEfqR2rtC/dVbI25Di8FfJsExr+SVYk1VfoABWCfNeEKTM4wJMuOydwSgl7t+Qm7ze8p3RTgREZaXDqKnVRZ8yH4O0qGIAlClBuXuLqRu91V9v5ovpto= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784368437; c=relaxed/simple; bh=ErK0kKfqSXyWSoK2c37Wa/tAFpO7wuoRh3+eARrOzz8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Jx90JH4CxMeeV1s0NE9PVlTIM4LxsQbcPs4X5Dv05iCDyNOFU+OdkhYGL0XHQ1XoBj/X6TcMFOWc1oq5X+7cD/vkHSS2Nb1WL+gCCoxuotTFpZi3O9P+nrINxrAWZHzBPs7q7i0nm1rpS5luZE8n0B6WFOaGAHG5aYKKTjeU8gw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=OcCr8E5O; arc=none smtp.client-ip=95.215.58.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="OcCr8E5O" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1784368433; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=TU7mrx5DtF0KFJ2y4d8E6VS3OLaCQseBFQLZUn6IewI=; b=OcCr8E5O5Yj8NyB0vF7HPdl5tzPHgqk5VXyRrYP8LqqmyeAe0N2gQa7TTbgAAhyRFaMAn2 DkeqaV6cX6k34yet3dyMtXYOyVq93vqp1k/ivAlKbb5FhfKttPKA3A/gFsLWNEkVeFwL6t ErCkBHzOXkl8nyr8gQxJN6F7mtMqZ0w= From: Ridong Chen To: akpm@linux-foundation.org Cc: hannes@cmpxchg.org, david@kernel.org, mhocko@kernel.org, qi.zheng@linux.dev, shakeel.butt@linux.dev, ljs@kernel.org, kasong@tencent.com, baohua@kernel.org, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, hezhongkun.hzk@bytedance.com, muchun.song@linux.dev, dave@stgolabs.net, roman.gushchin@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, ridong.chen@linux.dev, Ridong Chen Subject: [PATCH v2 0/4] mm/vmscan: fix swappiness=max and clean up per-node proactive reclaim Date: Sat, 18 Jul 2026 17:52:47 +0800 Message-ID: <20260718095251.82937-1-ridong.chen@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT From: Ridong Chen 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. --- Changes since v1: - 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 | 43 +++++++++++++++++++++++++++++-------------- 1 file changed, 29 insertions(+), 14 deletions(-) -- 2.43.0