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=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 657E6C43381 for ; Mon, 15 Mar 2021 12:23:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1B74864EB3 for ; Mon, 15 Mar 2021 12:23:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229684AbhCOMWi (ORCPT ); Mon, 15 Mar 2021 08:22:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230050AbhCOMWM (ORCPT ); Mon, 15 Mar 2021 08:22:12 -0400 Received: from mail-lj1-x232.google.com (mail-lj1-x232.google.com [IPv6:2a00:1450:4864:20::232]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8D8FBC061765 for ; Mon, 15 Mar 2021 05:22:11 -0700 (PDT) Received: by mail-lj1-x232.google.com with SMTP id a1so15928847ljp.2 for ; Mon, 15 Mar 2021 05:22:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=shutemov-name.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=NTc0pSC6ULv7Oqo3W3BMnNj1V6ogGKFoV43UcdG1gw0=; b=pj9oJ7H41ug5yJ5S6H0nmrDTorRFP5qpfgv8i0hsLgLSj6j5PjG4r6CtBYKYzFwGQ7 qUwbmG/8/o72CrhYOuy1punTJ8eK8uXtrdScLOXhZqHigyzjZUkihsGUq4xZefGGdJyJ 275Qs7hRExo2D1+cRyIGrQJ6i4ctnY1t01+0PJ6CKUa2AlaACxmAEx0k8rYtovkkg4lP l1xe1r6L8Z9HbZcmF3rYR+SPpPKz6i2+3Ny1STnPMThtmy5e0onayZVYWo+QbcgfkMHc xxoSTqoI9G0vymB+Dbv7E8Hbo2tjTUaTbVKY7ml8UnFXGPXy5tYMAX1HVhaerXR5DKSJ d5CQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=NTc0pSC6ULv7Oqo3W3BMnNj1V6ogGKFoV43UcdG1gw0=; b=PdM7uRK4742r4Cgz8Upm1BD/DPehxpVBCvqMPfufzAMCVpe2ffln0n+iKtXi6HISb9 tyviyxFcnXwL1TbNJHbkeky+hP3ImieP47gV7wv9upUEiqwFwwSf//NyMQMP2Te5MkDN d8XQc/U7bvUS5k131Ja81nKEmAXdzGMDNiQXKEZNHksRb4NDncYQy9hdQV1DMPkCpT+p +RQzOgsOQpI93zYPXRk91S2lGqAo1fB7B2Ii+TfaK2Y/SI8sUhGcwPERf5XXuKeNFfhY jBOB17va807RN8VlJAXadSQLNCe0Jphfyizm/GGLvpZwRy/gV6DWqPmIK9Mu0mShukcO ggyw== X-Gm-Message-State: AOAM530TBYMMVAmHLSvrFtzqmwU1vylA2VaH1zSbCTggQ/gueRR2phwN RETWwawl/wk65lK8T6tyqu2HpA== X-Google-Smtp-Source: ABdhPJzu4p8O5vMCnNYyq9XJrAyKlX9q99oPAsslS1Z6FvBBad1lCG5p6v0yCrHOhq3WAkMZ4COeEA== X-Received: by 2002:a2e:998d:: with SMTP id w13mr10078959lji.424.1615810929909; Mon, 15 Mar 2021 05:22:09 -0700 (PDT) Received: from box.localdomain ([86.57.175.117]) by smtp.gmail.com with ESMTPSA id f8sm2688995lfs.143.2021.03.15.05.22.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Mar 2021 05:22:09 -0700 (PDT) Received: by box.localdomain (Postfix, from userid 1000) id 9FE7010246E; Mon, 15 Mar 2021 15:22:13 +0300 (+03) Date: Mon, 15 Mar 2021 15:22:13 +0300 From: "Kirill A. Shutemov" To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , Arnd Bergmann , Michal Hocko , Oscar Salvador , Matthew Wilcox , Andrea Arcangeli , Minchan Kim , Jann Horn , Jason Gunthorpe , Dave Hansen , Hugh Dickins , Rik van Riel , "Michael S . Tsirkin" , "Kirill A . Shutemov" , Vlastimil Babka , Richard Henderson , Ivan Kokshaysky , Matt Turner , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Chris Zankel , Max Filippov , Mike Kravetz , Peter Xu , Rolf Eike Beer , linux-alpha@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux-arch@vger.kernel.org, Linux API Subject: Re: [PATCH RFCv2] mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault/prealloc memory Message-ID: <20210315122213.k52wtlbbhsw42pks@box> References: <20210308164520.18323-1-david@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210308164520.18323-1-david@redhat.com> Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org On Mon, Mar 08, 2021 at 05:45:20PM +0100, David Hildenbrand wrote: > + case -EHWPOISON: /* Skip over any poisoned pages. */ > + start += PAGE_SIZE; > + continue; Why is it good approach? It's not abvious to me. -- Kirill A. Shutemov