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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 3CF38C07E96 for ; Thu, 15 Jul 2021 04:19:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 26E5161279 for ; Thu, 15 Jul 2021 04:19:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235462AbhGOEV4 (ORCPT ); Thu, 15 Jul 2021 00:21:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54512 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233862AbhGOEVz (ORCPT ); Thu, 15 Jul 2021 00:21:55 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D7B1DC06175F; Wed, 14 Jul 2021 21:19:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=3MhUuhvN5PSzy3FDchiZH89Zo2RpiYRVaWvbf1NSsWY=; b=kjDHlMefUZNhNNaGGwuh7CT9D6 XeO13Tz2B8j9im+ZA4alHATGSiQJ3qFX18jn8B7rk1EnioSI+u17DQqCz5VWO1VbeCaD6DYKozSF9 qwKr3ObX7ohWGqAEvj8eYh/ZhD+2a6XpsUbjon9j0BHFDkGaXEupt25N+N2av0fREmHSiuwtrWK1L 0Y82XUJv0RV35eZmz0c8na6rjWIJmmiUpk6mLjDSqpt9gLYeGRihqIWDUHiCgwqzAycHzJ+K7njOS QFH8BNG9u+g3fGGUcPwmgEjHu69eoCaCiru+2VumGlw4lXWeSaX4LG3B0Lt9KNVEPFZgqSuAFLiXS vZzuixeQ==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1m3soY-002wg5-TI; Thu, 15 Jul 2021 04:18:02 +0000 From: "Matthew Wilcox (Oracle)" To: linux-kernel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Subject: [PATCH v14 051/138] mm: Add folio_pfn() Date: Thu, 15 Jul 2021 04:35:37 +0100 Message-Id: <20210715033704.692967-52-willy@infradead.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210715033704.692967-1-willy@infradead.org> References: <20210715033704.692967-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is the folio equivalent of page_to_pfn(). Signed-off-by: Matthew Wilcox (Oracle) --- include/linux/mm.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index c6e2a1682a6d..89daae93aa9b 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1623,6 +1623,20 @@ static inline unsigned long page_to_section(const struct page *page) } #endif +/** + * folio_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. + */ +static inline unsigned long folio_pfn(struct folio *folio) +{ + return page_to_pfn(&folio->page); +} + /* MIGRATE_CMA and ZONE_MOVABLE do not allow pin pages */ #ifdef CONFIG_MIGRATION static inline bool is_pinnable_page(struct page *page) -- 2.30.2