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=-2.0 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED, USER_AGENT_MUTT 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 5F4B1C43381 for ; Wed, 27 Mar 2019 23:37:37 +0000 (UTC) Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 462DE2075E for ; Wed, 27 Mar 2019 23:37:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="qFBqMT5/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 462DE2075E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=fail smtp.mailfrom=kernelnewbies-bounces@kernelnewbies.org Received: from localhost ([::1] helo=shelob.surriel.com) by shelob.surriel.com with esmtp (Exim 4.91) (envelope-from ) id 1h9I6I-0003LB-Ml; Wed, 27 Mar 2019 19:36:54 -0400 Received: from mail-oi1-x241.google.com ([2607:f8b0:4864:20::241]) by shelob.surriel.com with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.91) (envelope-from ) id 1h9I6H-0003L5-45 for kernelnewbies@kernelnewbies.org; Wed, 27 Mar 2019 19:36:53 -0400 Received: by mail-oi1-x241.google.com with SMTP id v10so9994590oib.1 for ; Wed, 27 Mar 2019 16:36:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=xRWZbph0AnNWWpxxL41UhgHhzYaf+DKydNfFNe3vTP4=; b=qFBqMT5/WpLMsAvCLPhsJ6GBUERaBQ7CTaxZ1BacMLD4rb8Yx9aYdOakNKcYkEvvsZ NnG7rcumOSWt/ZwS55MG3QYheIsLAZeswMhNIn6P0yvLD45YwFGczbzl3Bdr1H1oIaH4 MlOugmuM9lqyyVl04fK5HetfUf7MY6lHKLqs+lQcqBnyRTpKrInhSvF+M3dR8zGUfPX/ BcwJxllSUXI20vJzGsnTj3vx5vAu2Az+KSmFj4F/SQJMyPGZuH3Yzdj/mzVEHJ/N9sRT /F/qJNcHiRPs/2i7+N6MitCcHnpbirT3aakOmUpTdz7KZ7H/urncB3/BHIXT78NhBX97 e/HA== 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:user-agent; bh=xRWZbph0AnNWWpxxL41UhgHhzYaf+DKydNfFNe3vTP4=; b=WV2kj81TLdR7OKfabkNZdjEsEIhEJS+hUD39sxz0F4yGhFbs8o4IjAME+4uSHkEhwl ocLQXY204G3kM4l0iEgjWvtFvtCv67moQXyhqDwZc3T+jArVsrL8qCp/LzkF1oKR/FEA +W/S/10kpu+893+MZM91Er98M9PHeNDx172RJnDRRcaFUlKN4aGI73gYfdLd9CLrEhWj WLeJexTU90/8JKOKnbeLybgKNheBRxOLZSY2fGkjsLRufX1ddSUJsuUikL5cLT6OTrZp YmaEimiNVHcPxl37rtsw5S2diqSmWMbFVwwROm4kg+NLwhaL65mLKWmol3od7QgHsj4s zpcg== X-Gm-Message-State: APjAAAVQBICMOlRyxCOZZ8fXq2IXz7XyCgyt11oBXu//cfMtBsT8gVGJ xCby9XM1FraaHgyyb0U94vzvqDX8Lk4= X-Google-Smtp-Source: APXvYqy/KRPsb81VVlcGB59Uqci3D0lOWPoj/jHUm/UFhl6enCpfVaWY0eqA8TzAmWAfO6lgAJKJ3A== X-Received: by 2002:aca:47d2:: with SMTP id u201mr21044252oia.130.1553729810445; Wed, 27 Mar 2019 16:36:50 -0700 (PDT) Received: from koro.localdomain ([2600:1700:fbc0:2580::43]) by smtp.gmail.com with ESMTPSA id l63sm8923094oia.47.2019.03.27.16.36.48 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 27 Mar 2019 16:36:49 -0700 (PDT) Date: Wed, 27 Mar 2019 19:34:58 -0500 From: Jesse Simpson To: "Tobin C. Harding" Subject: Re: Where is PageHead defined in v5.0? Message-ID: <20190328003458.GA1733@koro.localdomain> References: <20190327222615.GB5006@eros.localdomain> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190327222615.GB5006@eros.localdomain> User-Agent: Mutt/1.11.4 (2019-03-13) Cc: kernelnewbies@kernelnewbies.org X-BeenThere: kernelnewbies@kernelnewbies.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Learn about the Linux kernel List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kernelnewbies-bounces@kernelnewbies.org Hi Tobin, I took a look on my system, and I wasn't able to find where PageHead is defined either. I used grep to search for it as well as vim with ctags. Maybe it's hidden away in some built-in.a or binary file. I'm looking on version 5.0.0. Good luck, Jesse Simpson On Thu, Mar 28, 2019 at 09:26:15AM +1100, Tobin C. Harding wrote: > Hi, > > I cannot locate the definition of PageHead? It seems to have > disappeared after v4.0? I can see it defined as a function here: > > https://elixir.bootlin.com/linux/v4.0/source/include/linux/page-flags.h#L401 > > But on the mainline (v5.1-rc2) I get: > > $ git grep ' PageHead' > include/linux/page-flags.h:int PageHeadHuge(struct page *page); > include/linux/page-flags.h: return PageHead(page); > include/linux/page-flags.h: return PageHead(page) && test_bit(PG_double_map, &page[1].flags); > mm/hugetlb.c: return PageHead(page) && PagePrivate(&page[1]); > mm/hugetlb.c: * PageHeadHuge() only returns true for hugetlbfs head page, but not for > mm/hugetlb.c:int PageHeadHuge(struct page *page_head) > > Clearly it is defined _somewhere_. Anyone any idea what brain > dysfunction I am having right now? > > thanks, > Tobin. > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@kernelnewbies.org > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies