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 96116C4338F for ; Tue, 27 Jul 2021 23:23:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7D19A60F59 for ; Tue, 27 Jul 2021 23:23:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232198AbhG0XXp (ORCPT ); Tue, 27 Jul 2021 19:23:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59080 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234083AbhG0XXl (ORCPT ); Tue, 27 Jul 2021 19:23:41 -0400 Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC54BC06179C for ; Tue, 27 Jul 2021 16:23:25 -0700 (PDT) Received: by mail-pj1-x1029.google.com with SMTP id mz5-20020a17090b3785b0290176ecf64922so7135695pjb.3 for ; Tue, 27 Jul 2021 16:23:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=intel-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=xJppDtDekYuL4cldpvhWyZyRjcblITCSsPeqIjft4RM=; b=yr6kw4zf3gIwms/Q88NRoMz75sAKL02QThM0wQN+UqNWENuFrKmN+BaWXb7ywu+cYJ fU3LyjFZwemn2aKXNQl2EhOw1XmpolDFwb/6zlB8ROPTufuWXtwoD0Uxaut87feMA1q2 jqgz7QMHLSk1uGXvOkPQ03plMlEQntwl/QOf7opT3eOBuODi/Iji1fjDl0nGXCjm9/gJ XZODtSaFfxiDXJB9BdfFmnGZk9BxuwqtZ54ym5WAC/vzHSxuCIXkw0Yk+YzRB8QQkhzL LuArIRpDS18WAYJWDMr8TDCFmRWjxSN2zfBSw6d28X6uRedeXFM2OgYDReK89s1M2P+w G+Iw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=xJppDtDekYuL4cldpvhWyZyRjcblITCSsPeqIjft4RM=; b=kfIJuXliKkYgxFJ8EpTaPNI8bhkI1L5y13D5WRwQ3Vrdyiv/71GciXZGJ3NXx9hYtS fRVnrh7lbppGs/z2Rf2QHnGZthFWKaQqlhItIzV9MLCLWS+M4vgy90ylUIpJWB1+nNnz HHPvgBi4or+jvQeUQyEQYcZB/lhLffFuck8LQXp+DLP5tAkGAssHLUcR0MHo3aoj05LH euj5PBaAtxXoMXcRb3HVum4gHP3DitJGybkSXZu3bHwvxiX4RrKiECmQuBYnhNb9fitn aCrBX8mG5HaRUViouz8ahB32iQsPalMqBLe6ujKi7yjMkos331ri7qsmuFg8ddgFc0f/ D2Uw== X-Gm-Message-State: AOAM5318/b6jtOWMhGDlM4Xf2/uJ2jl1vtw4hekd17YVejgZ5O9JtB6D /8GI9rIk+OYzMapd7ig7qpPi7HGts62uHT6cFqFZmw== X-Google-Smtp-Source: ABdhPJwLO7kXi5PzPgZkkGTm9QpggNSyfhWzfbITFv6b2qe0ZlE5ljlM6M13ncXAS3Z4qLENhnEhhA+Yvdr6t8zRaqU= X-Received: by 2002:a65:5544:: with SMTP id t4mr25771932pgr.240.1627428205422; Tue, 27 Jul 2021 16:23:25 -0700 (PDT) MIME-Version: 1.0 References: <20210714193542.21857-1-joao.m.martins@oracle.com> <20210714144830.29f9584878b04903079ef7eb@linux-foundation.org> <5642c8c3-cf13-33dc-c617-9d1becfba1b1@oracle.com> In-Reply-To: <5642c8c3-cf13-33dc-c617-9d1becfba1b1@oracle.com> From: Dan Williams Date: Tue, 27 Jul 2021 16:23:14 -0700 Message-ID: Subject: Re: [PATCH v3 00/14] mm, sparse-vmemmap: Introduce compound pagemaps To: Joao Martins Cc: Matthew Wilcox , Andrew Morton , Linux MM , Vishal Verma , Dave Jiang , Naoya Horiguchi , Jason Gunthorpe , John Hubbard , Jane Chu , Muchun Song , Mike Kravetz , Jonathan Corbet , Linux NVDIMM , Linux Doc Mailing List Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Thu, Jul 22, 2021 at 3:54 AM Joao Martins wrote: [..] > > The folio work really touches the page > > cache for now, and this seems mostly to touch the devmap paths. > > > /me nods -- it really is about devmap infra for usage in device-dax for persistent memory. > > Perhaps I should do s/pagemaps/devmap/ throughout the series to avoid confusion. I also like "devmap" as a more accurate name. It matches the PFN_DEV and PFN_MAP flags that decorate DAX capable pfn_t instances. It also happens to match a recommendation I gave to Ira for his support for supervisor protection keys with devmap pfns.