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=-6.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 139CEC43461 for ; Wed, 9 Sep 2020 14:47:16 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6B1E222252 for ; Wed, 9 Sep 2020 14:47:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=shutemov-name.20150623.gappssmtp.com header.i=@shutemov-name.20150623.gappssmtp.com header.b="IyLCntqr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6B1E222252 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=shutemov.name Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id CB2BA6B0082; Wed, 9 Sep 2020 10:47:14 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C88BD6B0083; Wed, 9 Sep 2020 10:47:14 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B78896B0085; Wed, 9 Sep 2020 10:47:14 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0084.hostedemail.com [216.40.44.84]) by kanga.kvack.org (Postfix) with ESMTP id A2E376B0082 for ; Wed, 9 Sep 2020 10:47:14 -0400 (EDT) Received: from smtpin12.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 67F9E181AC9CC for ; Wed, 9 Sep 2020 14:47:14 +0000 (UTC) X-FDA: 77243800788.12.hat26_3509c33270de Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin12.hostedemail.com (Postfix) with ESMTP id 3881A18006FDA for ; Wed, 9 Sep 2020 14:47:14 +0000 (UTC) X-HE-Tag: hat26_3509c33270de X-Filterd-Recvd-Size: 3649 Received: from mail-lj1-f194.google.com (mail-lj1-f194.google.com [209.85.208.194]) by imf11.hostedemail.com (Postfix) with ESMTP for ; Wed, 9 Sep 2020 14:47:13 +0000 (UTC) Received: by mail-lj1-f194.google.com with SMTP id v23so3956642ljd.1 for ; Wed, 09 Sep 2020 07:47:13 -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=2GHqdgUJt5smN/4OOFNEsAVDneIuF2nsov6u3PusPTk=; b=IyLCntqrnOKQDe6yyMPf/Hn9hMiHZRdmw3BDdKJtZ1s5kIojAA5TqqdYzRnRurHh// o0whzhP2CNeBDAv9MBHOzKiqRMOu1dPFDLkr9h9Aj9WX7+ubqy5JXMd66vzZgjYHk/Lm oOzoHAJEuQQQXYYr64kWgKYSkZ1hVp1rdV5lAy6ZP6FToxKITG2bEdRvlYPQL8NHvXXH N+G9exd25a3TJGfM6kMZJQUrCZ36IAUXPD+O8ER7wyUmaX9VyZbw2+OlAZW/zQ3ihcpH pwZ5JAToJcKgBKJwabAXdOFHe8A2WJZ8Iy/F5PEoDKuTBrmF1Ee1lK9ZCEkOmTGpxY/k HiMw== 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=2GHqdgUJt5smN/4OOFNEsAVDneIuF2nsov6u3PusPTk=; b=eZCZN3BxM5JpAgdi6EHqUheMvZZo8Tl8jcS26mPkrhL6YcSCroaDX3CSDzp2PuV/CR 6yRH2z+YCm03gcICdqxLtgu49EQaAoB1PqyEueC0keeMhXTBjlSIhS2liqS1l8dR4u1H lhd6UMSgDhq0Cd4vL+vvTDrdPVn0GrjhAvaoP1X10DV/MHqK3WSOaA0ppN9yBsXri+oE YY9aZ7Iil7Ao1zkq2AQ9mqOBrLPGD1yrUJ6I1AqmrjtaBAu6GFy/A79dmR7mahSnYwbJ UdSPVQGVTwemjs1M4grrzkKskig2j1cXlGUlOpFPAiNtSrdBZFXoWCCPlnLxTLK6g2DF Ky+g== X-Gm-Message-State: AOAM533DGYSeKTIaavcP7Q6873qsh4LAxx7/t4a+lMRzB13IusdkgnjR nfJQHqEAy53T+MtulzjkDv5wIw== X-Google-Smtp-Source: ABdhPJyy9xpnfupDQ9Pgy76jtPAtzZfKso17s6RoVn5WvFDRdVWn9TdGF5aRyXU+rSKy31ZpyfPjQg== X-Received: by 2002:a2e:84d6:: with SMTP id q22mr1980180ljh.70.1599662832621; Wed, 09 Sep 2020 07:47:12 -0700 (PDT) Received: from box.localdomain ([86.57.175.117]) by smtp.gmail.com with ESMTPSA id r7sm615288lfn.84.2020.09.09.07.47.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Sep 2020 07:47:11 -0700 (PDT) Received: by box.localdomain (Postfix, from userid 1000) id E8AEC1036AE; Wed, 9 Sep 2020 17:47:16 +0300 (+03) Date: Wed, 9 Sep 2020 17:47:16 +0300 From: "Kirill A. Shutemov" To: "Matthew Wilcox (Oracle)" Cc: linux-mm@kvack.org, Andrew Morton , Huang Ying Subject: Re: [PATCH 08/11] mm/rmap: Fix assumptions of THP size Message-ID: <20200909144716.6hzdczyefrc3ce6e@box> References: <20200908195539.25896-1-willy@infradead.org> <20200908195539.25896-9-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200908195539.25896-9-willy@infradead.org> X-Rspamd-Queue-Id: 3881A18006FDA X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 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 Tue, Sep 08, 2020 at 08:55:35PM +0100, Matthew Wilcox (Oracle) wrote: > Ask the page what size it is instead of assuming it's PMD size. Do this > for anon pages as well as file pages for when someone decides to support > that. Leave the assumption alone for pages which are PMD mapped; we > don't currently grow THPs beyond PMD size, so we don't need to change > this code yet. > > Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Kirill A. Shutemov -- Kirill A. Shutemov