From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6AA15C433EF for ; Fri, 10 Jun 2022 13:52:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349087AbiFJNww (ORCPT ); Fri, 10 Jun 2022 09:52:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39700 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348944AbiFJNwT (ORCPT ); Fri, 10 Jun 2022 09:52:19 -0400 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 10ED3DEA7 for ; Fri, 10 Jun 2022 06:52:13 -0700 (PDT) Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 25ADgfkE000541; Fri, 10 Jun 2022 13:51:13 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=yPR26Ihb5In/eBRJL5MvPvXGtjwasSeSjglyfb726gs=; b=in5N8kr8AGgz/T9k30XV7pxXCfgjVsr01UdIEQVHOguc6hP8roOPPCeDQ+mcGicvmYe/ u8kO19ZCy4e0nwmebIFpnAVepFVdf/Z+dERicbVlvURaOs4E24D/Eb3z4Sx90bbzrVAw odYhcaTU078VkbwnaT9BAUsXRFwYYq+OkZc+ttlDufYGM22sWXMYLkMgPfTC9e/heC5X Azi2517R9ilUanjl9RS+C8DPV+GsnHEpfxddcGvmJMMRyPQtXZx74VHIqzxR2qUpzqgF PzFEN1g8c+8kBN86py2a+LtGdVDl9ioRiEO7fdh+xhQEZ0e1fCzVHP+qT5GIdhg6+Ajt iQ== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3gm72vr517-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 10 Jun 2022 13:51:13 +0000 Received: from m0098393.ppops.net (m0098393.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 25ADhK9S001912; Fri, 10 Jun 2022 13:51:12 GMT Received: from ppma04wdc.us.ibm.com (1a.90.2fa9.ip4.static.sl-reverse.com [169.47.144.26]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3gm72vr50m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 10 Jun 2022 13:51:12 +0000 Received: from pps.filterd (ppma04wdc.us.ibm.com [127.0.0.1]) by ppma04wdc.us.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 25ADZYfO004860; Fri, 10 Jun 2022 13:51:10 GMT Received: from b03cxnp07028.gho.boulder.ibm.com (b03cxnp07028.gho.boulder.ibm.com [9.17.130.15]) by ppma04wdc.us.ibm.com with ESMTP id 3gfy1a91m2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 10 Jun 2022 13:51:10 +0000 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 25ADp9Pb33161638 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 10 Jun 2022 13:51:09 GMT Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C0A256A04F; Fri, 10 Jun 2022 13:51:09 +0000 (GMT) Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D70816A047; Fri, 10 Jun 2022 13:51:00 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.43.90.151]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 10 Jun 2022 13:51:00 +0000 (GMT) From: "Aneesh Kumar K.V" To: linux-mm@kvack.org, akpm@linux-foundation.org Cc: Wei Xu , Huang Ying , Greg Thelen , Yang Shi , Davidlohr Bueso , Tim C Chen , Brice Goglin , Michal Hocko , Linux Kernel Mailing List , Hesham Almatary , Dave Hansen , Jonathan Cameron , Alistair Popple , Dan Williams , Feng Tang , Jagdish Gediya , Baolin Wang , David Rientjes , "Aneesh Kumar K.V" Subject: [PATCH v6 03/13] mm/demotion: Return error on write to numa_demotion sysfs Date: Fri, 10 Jun 2022 19:19:56 +0530 Message-Id: <20220610135006.182507-4-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220610135006.182507-1-aneesh.kumar@linux.ibm.com> References: <20220610135006.182507-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: wsOflKyuQQ6kerx4rvuXMyB2h2OdWTpT X-Proofpoint-GUID: 1jmwotiMe_9hcyx1m5R317l0TvWtzFV6 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.874,Hydra:6.0.517,FMLib:17.11.64.514 definitions=2022-06-10_06,2022-06-09_02,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 spamscore=0 malwarescore=0 bulkscore=0 impostorscore=0 clxscore=1015 priorityscore=1501 mlxlogscore=999 mlxscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2204290000 definitions=main-2206100052 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org With CONFIG_MIGRATION disabled return EINVAL on write. Signed-off-by: Aneesh Kumar K.V --- mm/memory-tiers.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c index 9c6b40d7e0bf..c3123a457d90 100644 --- a/mm/memory-tiers.c +++ b/mm/memory-tiers.c @@ -105,6 +105,9 @@ static ssize_t numa_demotion_enabled_store(struct kobject *kobj, { ssize_t ret; + if (!IS_ENABLED(CONFIG_MIGRATION)) + return -EINVAL; + ret = kstrtobool(buf, &numa_demotion_enabled); if (ret) return ret; -- 2.36.1