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 370D9C433FE for ; Wed, 30 Nov 2022 16:13:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229521AbiK3QNJ (ORCPT ); Wed, 30 Nov 2022 11:13:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34028 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229627AbiK3QM4 (ORCPT ); Wed, 30 Nov 2022 11:12:56 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BAD5C2E9C5 for ; Wed, 30 Nov 2022 08:11:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1669824714; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+Vx3tqI0z8MBhtV+78AGz3/U6011aQy9sb2OvHcLUUU=; b=g4SCipabH4t36hip3HIx74z2802Zph1jvOxBrQDqpCcgBg+ZJ4pS6SFP4w5hvgIlWuIhjf 9drz6sZXKEYkpChw1eNZUU+5qoCTLBw4uexR173NTfuwOUbjdhpYNzDEu39mrt1PVIIjZP rwn1vflfEFA31whBOqmO6DuN3iQW/3w= Received: from mail-wr1-f69.google.com (mail-wr1-f69.google.com [209.85.221.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-121-2XXXOJsrNyqzFiKY5uJRtQ-1; Wed, 30 Nov 2022 11:11:53 -0500 X-MC-Unique: 2XXXOJsrNyqzFiKY5uJRtQ-1 Received: by mail-wr1-f69.google.com with SMTP id w11-20020adfbacb000000b002418a90da01so3711499wrg.16 for ; Wed, 30 Nov 2022 08:11:53 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:organization:from:references :cc:to:content-language:subject:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=+Vx3tqI0z8MBhtV+78AGz3/U6011aQy9sb2OvHcLUUU=; b=bVw3am/1W5skAp6pFoxOtOZtcifSb/AuLDRQKOjj/TBCHi6Os6xL72zEG1sAImyQHD SQFEe2XZpULw/dccZNdLlkMc6jAwbWCmwX45zwP6tMIRDly3ifceL1hLCspm+qVQo0xG Etr/UVMCsO2QTS9TjSsu0mpHGa2WMIerIv0Pnv52UG5AXWT98Vp5tjpnKmPdyPdt5y9f DEq7P9aplxPN1IP3bKPkoDHVDL/DcQIE+vPa25jjTEvkGYzANjmVtFI7JtaP0R3YsTtU BHKulxyNUOQEgZgBzGcqRmi9qwFS4Ae3ZY2ugZXFRWaiMg2oGyHr4YyrzvmdEh5SLU8A KHPQ== X-Gm-Message-State: ANoB5pkIboK8ciIYyGLU5jou3yrqi051/C2bpGuMfoCC9AwIjA61Zloq A5emoufNLo/w+nFU1UpRCqdDjs8UESs8jicdG+PPrHDytExncw1ZwENI7UuTHFWyLKa9rygj+gB rkrxCMFTRencjEqxkQH2PKgSM X-Received: by 2002:a5d:6347:0:b0:242:3343:c493 with SMTP id b7-20020a5d6347000000b002423343c493mr166929wrw.547.1669824712242; Wed, 30 Nov 2022 08:11:52 -0800 (PST) X-Google-Smtp-Source: AA0mqf7oggx+Ui4jdQZwKIfu/UGPFHzm3yZq3CUiGArNk9pBCItuYGJn7FEMtWThXOE4shyOjg5Yhw== X-Received: by 2002:a5d:6347:0:b0:242:3343:c493 with SMTP id b7-20020a5d6347000000b002423343c493mr166916wrw.547.1669824712005; Wed, 30 Nov 2022 08:11:52 -0800 (PST) Received: from ?IPV6:2003:cb:c703:7600:a8ea:29ce:7ee3:dd41? (p200300cbc7037600a8ea29ce7ee3dd41.dip0.t-ipconnect.de. [2003:cb:c703:7600:a8ea:29ce:7ee3:dd41]) by smtp.gmail.com with ESMTPSA id n14-20020a05600c4f8e00b003c6f3f6675bsm6803196wmq.26.2022.11.30.08.11.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 30 Nov 2022 08:11:51 -0800 (PST) Message-ID: <06f701fd-4e7a-cb8e-25bb-a39e22f5307d@redhat.com> Date: Wed, 30 Nov 2022 17:11:50 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.0 Subject: Re: [PATCH 08/10] mm/hugetlb: Make walk_hugetlb_range() safe to pmd unshare Content-Language: en-US To: Peter Xu , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: James Houghton , Jann Horn , Andrew Morton , Andrea Arcangeli , Rik van Riel , Nadav Amit , Miaohe Lin , Muchun Song , Mike Kravetz References: <20221129193526.3588187-1-peterx@redhat.com> <20221129193526.3588187-9-peterx@redhat.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20221129193526.3588187-9-peterx@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 29.11.22 20:35, Peter Xu wrote: > Since walk_hugetlb_range() walks the pgtable, it needs the vma lock > to make sure the pgtable page will not be freed concurrently. > > Signed-off-by: Peter Xu > --- Acked-by: David Hildenbrand -- Thanks, David / dhildenb