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 D7B0FC38A02 for ; Fri, 28 Oct 2022 23:25:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229728AbiJ1XZ0 (ORCPT ); Fri, 28 Oct 2022 19:25:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38524 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229528AbiJ1XZU (ORCPT ); Fri, 28 Oct 2022 19:25:20 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F09C11114D for ; Fri, 28 Oct 2022 16:24:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1666999468; 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: in-reply-to:in-reply-to:references:references; bh=cRyNGp9vBF4GSRr09z30VvDe1naMezW0SypBh95qjuw=; b=cF8qylGnTTjOKG8iRmv8ZopDux5cJfOdhJyCDpvZuemjbRn7GZACpkbCwzUeRhcRrNlR5Q S8QMCQhiX04CLDqLev1lZYxOJbpXkdkv6NhHVvYm+uZHwLNxRamYheeuy1+bJaYyRbCv/U 8JMFpLmnqKQuRoLggjK4FEHa04tf3Dw= Received: from mail-qv1-f70.google.com (mail-qv1-f70.google.com [209.85.219.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-644-izWfKLZpNXeW91PiQm61JQ-1; Fri, 28 Oct 2022 19:24:21 -0400 X-MC-Unique: izWfKLZpNXeW91PiQm61JQ-1 Received: by mail-qv1-f70.google.com with SMTP id x2-20020a0cff22000000b004bb07bf7557so3695896qvt.11 for ; Fri, 28 Oct 2022 16:24:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=cRyNGp9vBF4GSRr09z30VvDe1naMezW0SypBh95qjuw=; b=nSOI2qaXwlLCR+dmSePcNLoGA+wo/gP9BnmDCeCdsBuZHYFzhTgm7HzfekOVW1b/wv PBcw/wxSw/CMuZK0kIrVrNja+SYPO1uq67OZ2m0TzNL95m+r6KzKr5edeWu5hRmC4t8v MfB8SMHwXfJ0WN/ahE7ozHFrvokS8MFxmXw1DZCr7kyuwfhPvJGvZxjCP5o0Z9d/MVkw TLZO2kntGL9hdqT6+TyqJzqZvI+gVbJjVZD8a9X5/DpIajTA1hFyFNejG1LVTxFdjpya w3m03cAjmdxjyui6XOq2jLIFZDCLFM8RMt/h/z923G/haBhIyiIqwpbLSCrA55xwJyYT AZXg== X-Gm-Message-State: ACrzQf0RleRa8seEhvqJjKMEIvMT4r5fUtdmgsnMla5U7RBaKBLAy92G 53CF3TkWj1FThPNjbaectD6bwNWKgqCf7KhpgLzpwICkdGDASrjMfY4GuKAR7UqhII2FkYtbEFT Hyu/Q95+XX9MUuMhNXP5oatOl X-Received: by 2002:ad4:4ea2:0:b0:4b7:e8a3:e043 with SMTP id ed2-20020ad44ea2000000b004b7e8a3e043mr1727882qvb.34.1666999460665; Fri, 28 Oct 2022 16:24:20 -0700 (PDT) X-Google-Smtp-Source: AMsMyM5O9D8mCa0VSNsJWqYFF4hzhXh38xZVkwpvXIFKcJlS4quyWCJ+vSPpcEiNhIciaQuZzCKa1g== X-Received: by 2002:ad4:4ea2:0:b0:4b7:e8a3:e043 with SMTP id ed2-20020ad44ea2000000b004b7e8a3e043mr1727871qvb.34.1666999460480; Fri, 28 Oct 2022 16:24:20 -0700 (PDT) Received: from x1n (bras-base-aurron9127w-grc-46-70-31-27-79.dsl.bell.ca. [70.31.27.79]) by smtp.gmail.com with ESMTPSA id d9-20020a05620a240900b006b8e8c657ccsm3976351qkn.117.2022.10.28.16.24.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Oct 2022 16:24:19 -0700 (PDT) Date: Fri, 28 Oct 2022 19:24:18 -0400 From: Peter Xu To: Mike Kravetz Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-ia64@vger.kernel.org, Baolin Wang , Christophe Leroy , David Hildenbrand , "Aneesh Kumar K . V" , Naoya Horiguchi , Michael Ellerman , Muchun Song , Andrew Morton Subject: Re: [PATCH v4] hugetlb: simplify hugetlb handling in follow_page_mask Message-ID: References: <20221028181108.119432-1-mike.kravetz@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20221028181108.119432-1-mike.kravetz@oracle.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Oct 28, 2022 at 11:11:08AM -0700, Mike Kravetz wrote: > v4 - Remove vma (pmd sharing) locking as this can be called with > FOLL_NOWAIT. Peter Thanks, Mike. For the gup safety on pmd unshare, I'll prepare a few small patches and post hopefully early next week (will be off-work on Mon & Tue, but maybe I'll still try). -- Peter Xu