From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) (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 BCCED226863; Sat, 2 May 2026 02:47:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777690036; cv=none; b=LCwEemynOMfdsx97dZvnXBAswqw3nvXoQMCxxp5GTojrdFQG6e9nedz9BhqI/1YU/Dk+Ym6nms5NUsQI2G1AlztL8rl02bO0GKVSa8tJ3K6ZdbBsQY7Cs8FeKRLnRC+81/GgJSQDJksGY9oKpRd7NmvnHeCtnzJ+m0IMzATGs0o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777690036; c=relaxed/simple; bh=BEVICxriND/4ZEHjdaZWgt3YWFVaCsGLptcR9kyxMRA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=fqq7kC4pv2rtceBYziPNuURtKxo+KjY0/gU0Qp9QsBlbjKnAXRdipwdYWP1v0I1jA40UPVRD5P35uLZiph4yeXsMBLcedjdIwwAI3il9cJydjs5K8Y6knMtRKzURca1sZu5p3wEZRaQQ9d3AKopL+gwzPvbiHWrlezw3wMNWAOY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=VdmfSk9F; arc=none smtp.client-ip=198.175.65.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="VdmfSk9F" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1777690035; x=1809226035; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=BEVICxriND/4ZEHjdaZWgt3YWFVaCsGLptcR9kyxMRA=; b=VdmfSk9F2c4sSaTRyn91YMyT7xVqTmJUPAssBYqGsnzSyk1a5nIEd1qp vAUztELbo31CCa814o0lycuMY6zducbYirfXsNO61sIsTO5m3ExgYWIgj F29dxo3XV6ubmzc1+lBXVTN7CjixeIpDjcaSiw9wjCs5xkKJvneeKvS88 B3GNmHxTr8oSb0U7/dy89+B7lHtt3ligcmiG7Sslj9i7tsUbcYPVTHhfj +VFravXUXbhchvqMVlkT6gYufKrmoihsO8N0MqYxlnLI0XGfHV2POlF/U TM/Nas0n/W9WgmGQe48oLAJMk8mkmif7KvRk7IgDzFwttT8z7v7Jl1h43 w==; X-CSE-ConnectionGUID: tTmJJjm/RlyjVDAwwkEiEg== X-CSE-MsgGUID: N/WjGsTiSy+DkCHnQ9ALRg== X-IronPort-AV: E=McAfee;i="6800,10657,11773"; a="78673067" X-IronPort-AV: E=Sophos;i="6.23,211,1770624000"; d="scan'208";a="78673067" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 May 2026 19:47:15 -0700 X-CSE-ConnectionGUID: VgKbe9uJR/SqBJSEqxxWXQ== X-CSE-MsgGUID: nmZvDmbLQNCH3vpAuWGAWw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,211,1770624000"; d="scan'208";a="234154052" Received: from lkp-server01.sh.intel.com (HELO 781826d00641) ([10.239.97.150]) by orviesa010.jf.intel.com with ESMTP; 01 May 2026 19:47:13 -0700 Received: from kbuild by 781826d00641 with local (Exim 4.98.2) (envelope-from ) id 1wJ0Nq-00000000165-3Ve1; Sat, 02 May 2026 02:47:10 +0000 Date: Sat, 2 May 2026 10:46:54 +0800 From: kernel test robot To: Thomas =?iso-8859-1?Q?Hellstr=F6m?= Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev Subject: Re: [RFC PATCH 1/1] mm: vmscan: keep anon scanning enabled when swapcache folios are present Message-ID: <202605021047.kY1JeLwn-lkp@intel.com> References: <20260427103532.5623-2-thomas.hellstrom@linux.intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260427103532.5623-2-thomas.hellstrom@linux.intel.com> Hi Thomas, [This is a private test report for your RFC patch.] kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on linus/master v7.1-rc1 next-20260430] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Thomas-Hellstr-m/mm-vmscan-keep-anon-scanning-enabled-when-swapcache-folios-are-present/20260428-183540 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20260427103532.5623-2-thomas.hellstrom%40linux.intel.com patch subject: [RFC PATCH 1/1] mm: vmscan: keep anon scanning enabled when swapcache folios are present config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20260502/202605021047.kY1JeLwn-lkp@intel.com/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260502/202605021047.kY1JeLwn-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202605021047.kY1JeLwn-lkp@intel.com/ All errors (new ones prefixed by >>): >> mm/vmscan.c:365:38: error: use of undeclared identifier 'NR_SWAPCACHE' 365 | if (node_page_state(NODE_DATA(nid), NR_SWAPCACHE) > 0) | ^~~~~~~~~~~~ 1 error generated. vim +/NR_SWAPCACHE +365 mm/vmscan.c 341 342 static inline bool can_reclaim_anon_pages(struct mem_cgroup *memcg, 343 int nid, 344 struct scan_control *sc) 345 { 346 if (memcg == NULL) { 347 /* 348 * For non-memcg reclaim, is there 349 * space in any swap device? 350 */ 351 if (get_nr_swap_pages() > 0) 352 return true; 353 } else { 354 /* Is the memcg below its swap limit? */ 355 if (mem_cgroup_get_nr_swap_pages(memcg) > 0) 356 return true; 357 } 358 359 /* 360 * Even with no free swap slots, anon folios already in the swap cache 361 * carry a pre-allocated slot and can be written back and freed from RAM 362 * without consuming a new one. Do not suppress anon scanning when such 363 * folios are present on this node. 364 */ > 365 if (node_page_state(NODE_DATA(nid), NR_SWAPCACHE) > 0) 366 return true; 367 368 /* 369 * The page can not be swapped. 370 * 371 * Can it be reclaimed from this node via demotion? 372 */ 373 return can_demote(nid, sc, memcg); 374 } 375 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki