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=-18.6 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_IN_DEF_DKIM_WL 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 75CBBC07E95 for ; Wed, 7 Jul 2021 20:54:21 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 1257E61CD2 for ; Wed, 7 Jul 2021 20:54:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1257E61CD2 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id BAC386B0011; Wed, 7 Jul 2021 16:54:20 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B84566B0070; Wed, 7 Jul 2021 16:54:20 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A255A6B0073; Wed, 7 Jul 2021 16:54:20 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0122.hostedemail.com [216.40.44.122]) by kanga.kvack.org (Postfix) with ESMTP id 7F7EC6B0011 for ; Wed, 7 Jul 2021 16:54:20 -0400 (EDT) Received: from smtpin24.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id CA9BA276F1 for ; Wed, 7 Jul 2021 20:54:19 +0000 (UTC) X-FDA: 78336994638.24.ADCCB0E Received: from mail-lf1-f42.google.com (mail-lf1-f42.google.com [209.85.167.42]) by imf09.hostedemail.com (Postfix) with ESMTP id 7138B3000101 for ; Wed, 7 Jul 2021 20:54:19 +0000 (UTC) Received: by mail-lf1-f42.google.com with SMTP id a18so7678702lfs.10 for ; Wed, 07 Jul 2021 13:54:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=x/kA3SD9saboQz8UvpjlwI7yeO7q8qZF3XCWfCyb1yI=; b=eLE4MbwO2HgXGT8xqVoMOkh5dGvG0jeKB8XEZ2bhl0bnZdEB/0Q0qc0EpfRElV5zZL QNHGKphh+Cs783oNn7iOkqrwqzROHwgZo+pt0RUdaSmjUvsiI3XYR60axeHk0xJJbWr4 LkFoqO8bJs9AudkKwHCRyJ9pA5khR+IVXVWs4pXkZUC8x2egqqFENY26RyfHkWV6kC2v NXrDIhvObFvxrqaVqU6w1z9mPt/hZQSBjP5H2NIlDwPD60Ca8eGQWCrIfIyirdFSkadJ vVvuzlYT+I1Od2SPKG9FESJVhtA+aw7+HceuZ2lTR1pz+dzcOWwXR5TX++9CDN8sUGCo y1FQ== 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=x/kA3SD9saboQz8UvpjlwI7yeO7q8qZF3XCWfCyb1yI=; b=Xjm4/o1ovfwvDsnx2cozpzzZN+TYkaauPKJMIqG+qQhp5R6ehhte2dVoR7OTyuuw6h Tf9/CealFGES8wk7Nw7ILxW8ouqyhd5VWFSuqKSJv9MI/Y89VZy2e1os3oMTW0cw/nuu Qn+cHiA5kX7DXPiHu0wswP4/ERokgoZdV4ayhsrMjcEjsnXlETXCGaq81sOyRF9qsGne PocWkxzS+U+kvJYbBs2anTNr+i7H2jL+yi8lH1kaRs/ZzvIEy4GwC7y5OITslDk3l6L+ oysanteGvSHdFwFuZUP+t9kydxdje+RoqammpWZEd8pCJm3S+CJJH+c9Q/JEqXhVZosx w75w== X-Gm-Message-State: AOAM531mAFOU2XgYO9tyGQjGLQ1mRUXxWZNUu8LmG6d523y0jTcDKove shBFWDZ897ZibViNkQhonc8hZ+CVmDfK93cjhPdkkw== X-Google-Smtp-Source: ABdhPJz5xj35JumH1kEcELdwoB5hFtDmYMLlMrm0Tb0UawhOMwPwqmdX0dRgvIilBmJaMPCqJsoKpvPPJ4mKbEtVlCM= X-Received: by 2002:a19:7418:: with SMTP id v24mr20805735lfe.117.1625691257942; Wed, 07 Jul 2021 13:54:17 -0700 (PDT) MIME-Version: 1.0 References: <563ce5b2-7a44-5b4d-1dfd-59a0e65932a9@google.com> <1241d356-8ec9-f47b-a5ec-9b2bf66d242@google.com> In-Reply-To: <1241d356-8ec9-f47b-a5ec-9b2bf66d242@google.com> From: Shakeel Butt Date: Wed, 7 Jul 2021 13:54:07 -0700 Message-ID: Subject: Re: [PATCH 4/4] mm/rmap: try_to_migrate() skip zone_device !device_private To: Hugh Dickins Cc: Andrew Morton , Alistair Popple , Jason Gunthorpe , Ralph Campbell , Christoph Hellwig , Yang Shi , "Kirill A. Shutemov" , LKML , Linux MM Content-Type: text/plain; charset="UTF-8" Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=google.com header.s=20161025 header.b=eLE4MbwO; spf=pass (imf09.hostedemail.com: domain of shakeelb@google.com designates 209.85.167.42 as permitted sender) smtp.mailfrom=shakeelb@google.com; dmarc=pass (policy=reject) header.from=google.com X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 7138B3000101 X-Rspam-User: nil X-Stat-Signature: bjbtsb5gzxce78x8uf4c7ifheg6onmyb X-HE-Tag: 1625691259-894772 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Jul 7, 2021 at 1:13 PM Hugh Dickins wrote: > > I know nothing about zone_device pages and !device_private pages; but > if try_to_migrate_one() will do nothing for them, then it's better that > try_to_migrate() filter them first, than trawl through all their vmas. > > Signed-off-by: Hugh Dickins Reviewed-by: Shakeel Butt