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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6072DC433F5 for ; Thu, 6 Sep 2018 04:03:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 115542075E for ; Thu, 6 Sep 2018 04:03:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 115542075E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726161AbeIFIhT (ORCPT ); Thu, 6 Sep 2018 04:37:19 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:55290 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725885AbeIFIhT (ORCPT ); Thu, 6 Sep 2018 04:37:19 -0400 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w863sPTW046790 for ; Thu, 6 Sep 2018 00:03:54 -0400 Received: from e32.co.us.ibm.com (e32.co.us.ibm.com [32.97.110.150]) by mx0a-001b2d01.pphosted.com with ESMTP id 2mauu3t0af-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 06 Sep 2018 00:03:54 -0400 Received: from localhost by e32.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 5 Sep 2018 22:03:50 -0600 Received: from b03ledav004.gho.boulder.ibm.com (b03ledav004.gho.boulder.ibm.com [9.17.130.235]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w8643ntP20512844 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 5 Sep 2018 21:03:49 -0700 Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 198E178063; Wed, 5 Sep 2018 22:03:49 -0600 (MDT) Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 29E8878060; Wed, 5 Sep 2018 22:03:47 -0600 (MDT) Received: from [9.102.0.183] (unknown [9.102.0.183]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP; Wed, 5 Sep 2018 22:03:46 -0600 (MDT) Subject: Re: [RFC PATCH] mm/hugetlb: make hugetlb_lock irq safe To: Mike Kravetz , Matthew Wilcox , Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20180905112341.21355-1-aneesh.kumar@linux.ibm.com> <20180905130440.GA3729@bombadil.infradead.org> <20180905134848.GB3729@bombadil.infradead.org> <20180905125846.eb0a9ed907b293c1b4c23c23@linux-foundation.org> <78b08258-14c8-0e90-97c7-d647a11acb30@oracle.com> <20180905150008.59d477c1f78f966a8f9c3cc8@linux-foundation.org> <20180905230737.GA14977@bombadil.infradead.org> From: "Aneesh Kumar K.V" Date: Thu, 6 Sep 2018 09:33:45 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 18090604-0004-0000-0000-00001484D3D0 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009676; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01084193; UDB=6.00559576; IPR=6.00864193; MB=3.00023137; MTD=3.00000008; XFM=3.00000015; UTC=2018-09-06 04:03:51 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18090604-0005-0000-0000-000088B6E302 Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-09-06_01:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=684 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1809060041 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/06/2018 05:21 AM, Mike Kravetz wrote: > > BTW, free_huge_page called by put_page for hugetlbfs pages may also take > a subpool specific lock via spin_lock(). See hugepage_subpool_put_pages. > So, this would also need to take irq context into account. > I missed that. I can take care of that in next patch update based on what we decide w.r.t this patch. -aneesh