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=-10.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 10F1AC49EA6 for ; Thu, 24 Jun 2021 15:12:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E47E16102A for ; Thu, 24 Jun 2021 15:12:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231194AbhFXPOz (ORCPT ); Thu, 24 Jun 2021 11:14:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230008AbhFXPOz (ORCPT ); Thu, 24 Jun 2021 11:14:55 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 702CFC061574; Thu, 24 Jun 2021 08:12:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=OX+lANPiZGvxTlDQ96tEYd1zyjA1DvX076Imm4QeeNY=; b=if2/Xho/z/d98VtoDncnYkqWbb 12naERzdbyXq3MXtuFRNqloUyIy4xhAidr1ZQQr+3ArrKrYlwqP8rlNGYOf/fuxIYBc09awxNef3p u3d0hEJMcVObM85Uel/TSl+J9mwl5jaSzIXey4c/vFVluWKzZW5id6qT6spcDLwsf/kJiQdC+OvH6 ub260sxVgEv93k419eSdK+Y3Zm6FIqBWsQKWLDyE7us7Z5mW6xpdhYVOlwrFXFlxlkWZisYtNS10X GAu9r2+68361gE4GFQX2Y7zQPbY0kpXzwKnDlPbI7zcT8M9fS/6G9LkXrfwEgFQea2Tdl1uZNzAtx 19iAJMzg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1lwR1R-00GhlE-IM; Thu, 24 Jun 2021 15:12:08 +0000 Date: Thu, 24 Jun 2021 16:12:05 +0100 From: Matthew Wilcox To: Christoph Hellwig Cc: akpm@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 01/46] mm: Add folio_to_pfn() Message-ID: References: <20210622121551.3398730-1-willy@infradead.org> <20210622121551.3398730-2-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Wed, Jun 23, 2021 at 08:49:55AM +0100, Christoph Hellwig wrote: > On Tue, Jun 22, 2021 at 01:15:06PM +0100, Matthew Wilcox (Oracle) wrote: > > The pfn of a folio is the pfn of its head page. > > > > Signed-off-by: Matthew Wilcox (Oracle) > > Maybe add a kerneldoc comment stating that? /** * folio_to_pfn - Return the Page Frame Number of a folio. * @folio: The folio. * * A folio may contain multiple pages. The pages have consecutive * Page Frame Numbers. * * Return: The Page Frame Number of the first page in the folio. */