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=-18.3 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 20729C4338F for ; Thu, 19 Aug 2021 20:09:52 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AC4B461075 for ; Thu, 19 Aug 2021 20:09:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org AC4B461075 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 4C6506B006C; Thu, 19 Aug 2021 16:09:51 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 476906B0071; Thu, 19 Aug 2021 16:09:51 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3653E8D0001; Thu, 19 Aug 2021 16:09:51 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0180.hostedemail.com [216.40.44.180]) by kanga.kvack.org (Postfix) with ESMTP id 16E656B006C for ; Thu, 19 Aug 2021 16:09:51 -0400 (EDT) Received: from smtpin32.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id A17B0183EC327 for ; Thu, 19 Aug 2021 20:09:50 +0000 (UTC) X-FDA: 78492920940.32.DE5FD40 Received: from mail-yb1-f177.google.com (mail-yb1-f177.google.com [209.85.219.177]) by imf28.hostedemail.com (Postfix) with ESMTP id 627DC90000A1 for ; Thu, 19 Aug 2021 20:09:50 +0000 (UTC) Received: by mail-yb1-f177.google.com with SMTP id i8so14536298ybt.7 for ; Thu, 19 Aug 2021 13:09:50 -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=hEHyflATa8ZJ9MWfAJnBQNhj3JsC3JBcJ/6ag3O0bBs=; b=TZhIXS2Nkzr4Lx+5LUIlp18eYdMQ7B0cjj8Z0IbEZ/ObpK6HI3T8NOujHdCs0PcSOa OGE3Komvk0XoGwMQ6mQbA972igMURrCNEebMzS3qw2irQ2osaRdSSunn7/vzyBqrAI77 IIri+i7ziX5jVotImaZ8iaMqR1/hSP+ToXytirSjCJ8TjQ2cKM5ekG7v3oyRuiKHoHvp ZBLdGsec7YdoL/7bzXY5JUiJMO7+k0jd08tPHrNoqCoLf62+AlykjKvxLyuV34fk3FJU 3HVg8nxdBmKopszRY+bGAjBOprKXwp2CA6ppsyyyccBa1IeNlAqvSw1vG46Du1YlT9eV ruIQ== 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=hEHyflATa8ZJ9MWfAJnBQNhj3JsC3JBcJ/6ag3O0bBs=; b=Rts3VMElJjKH8RL/CajD219Lp9rcWkPuJjpmngjAatdWsh1oGMAk6+oqVwDTOypcFi 1ijcgmccSjyzqdAur6ICWDJ1nksg0pHUX8E8te7UlGAbbVj6kcyXNcoXbVZcm4ppOr+7 3qEcxhMEpT9fVydoVKP357bx/ka1VIV46VugIzmwbL0kT3qwpYvRbQzNgop9j+ZnXdhR Etkx0hIklqe/YqJ/48a3paNHED0YcS1EDGIdkj7AQN/63lhcCAxcV5/Y8Kj2chUtpKjy mvj1YpXgGI724a3lASoHFzEOvIubT1X20xXMIHK9T85auXouTsmhJNJZpX0mElo4UxYN 4WRQ== X-Gm-Message-State: AOAM5326eoUAnecxGOZyv6WlZc3r7jH2U8QQCphivEYMlB5hX7CxAncD WcohQ+2Pokwft0WYCKJ3jJMkxbGVFOfzAge28qlacQ== X-Google-Smtp-Source: ABdhPJz9REtAlpPPWBzlps4aOZ4ceCSluRsgzQkI6/CvoCsw+7JW8jhAmlHPSp8SA452+ladiFR6Jq44WxLC2htI3mY= X-Received: by 2002:a25:ab62:: with SMTP id u89mr21409435ybi.93.1629403789500; Thu, 19 Aug 2021 13:09:49 -0700 (PDT) MIME-Version: 1.0 References: <20210819150712.59948-1-songmuchun@bytedance.com> In-Reply-To: <20210819150712.59948-1-songmuchun@bytedance.com> From: Shakeel Butt Date: Thu, 19 Aug 2021 13:09:38 -0700 Message-ID: Subject: Re: [PATCH v2] mm: introduce PAGEFLAGS_MASK to replace ((1UL << NR_PAGEFLAGS) - 1) To: Muchun Song Cc: Roman Gushchin , Johannes Weiner , Michal Hocko , Andrew Morton , Vladimir Davydov , Matthew Wilcox , LKML , Linux MM Content-Type: text/plain; charset="UTF-8" Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=google.com header.s=20161025 header.b=TZhIXS2N; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf28.hostedemail.com: domain of shakeelb@google.com designates 209.85.219.177 as permitted sender) smtp.mailfrom=shakeelb@google.com X-Stat-Signature: yagos5kux4swszcb8uxah1tctcte6uta X-Rspamd-Queue-Id: 627DC90000A1 X-Rspamd-Server: rspam01 X-HE-Tag: 1629403790-714249 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 Thu, Aug 19, 2021 at 8:07 AM Muchun Song wrote: > > Instead of hard-coding ((1UL << NR_PAGEFLAGS) - 1) everywhere, introducing > PAGEFLAGS_MASK to make the code clear to get the page flags. > > Signed-off-by: Muchun Song Reviewed-by: Shakeel Butt