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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 C1076C433ED for ; Tue, 11 May 2021 21:57:45 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5C03C616EA for ; Tue, 11 May 2021 21:57:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5C03C616EA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id D07416B006C; Tue, 11 May 2021 17:57:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CB75F6B006E; Tue, 11 May 2021 17:57:44 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B585E6B0070; Tue, 11 May 2021 17:57:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0207.hostedemail.com [216.40.44.207]) by kanga.kvack.org (Postfix) with ESMTP id 95EEA6B006C for ; Tue, 11 May 2021 17:57:44 -0400 (EDT) Received: from smtpin24.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 5BC558249980 for ; Tue, 11 May 2021 21:57:44 +0000 (UTC) X-FDA: 78130312848.24.0062DF9 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf26.hostedemail.com (Postfix) with ESMTP id 1CF1740002F7 for ; Tue, 11 May 2021 21:57:29 +0000 (UTC) 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=slr8t+6ZwKifGMrvwqS4rOmeg/A72JJfbwrzhXlZeNg=; b=vSLRx2LIN7aej0REbuNYoUBkW0 BvJF87Bv1hch0ix4sTvN+dwW9Bv98SKNoHeaqhNyyBvBiPjqWsmd2V4jCeuCz/ft+7nrJu5uPjLsh rIVf+qy+FLtZDHobhLS/Dh65x2/+beMrbiliuqCTsthee536dQUG4rV/QzMveL1ch8Qdjpt+XjP0N Dhi+DiKQDxwHTw0nNrv2ob1eXKPlwesFKUP0ZRqbtXmzD1Pssi7HTzlKfa/Dfdng2bfxmq8idcwqd 0SCl+WgIP0agieW2VeD88SVBAF3VDubW2jV15+rmqcb46gSPTZSh9jDXDQr5aYjXVcRc1nOywJaCS U6JyDjBQ==; Received: from willy by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1lgaMC-007i92-4W; Tue, 11 May 2021 21:56:08 +0000 From: "Matthew Wilcox (Oracle)" To: akpm@linux-foundation.org Cc: "Matthew Wilcox (Oracle)" , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Christoph Hellwig , Jeff Layton Subject: [PATCH v10 13/33] mm/filemap: Add folio_next_index Date: Tue, 11 May 2021 22:47:15 +0100 Message-Id: <20210511214735.1836149-14-willy@infradead.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210511214735.1836149-1-willy@infradead.org> References: <20210511214735.1836149-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Queue-Id: 1CF1740002F7 Authentication-Results: imf26.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=vSLRx2LI; spf=none (imf26.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none X-Rspamd-Server: rspam04 X-Stat-Signature: 67m4m93i1bnigyb998pskcuzbsfh5sj1 Received-SPF: none (infradead.org>: No applicable sender policy available) receiver=imf26; identity=mailfrom; envelope-from=""; helo=casper.infradead.org; client-ip=90.155.50.34 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1620770249-77726 Content-Transfer-Encoding: quoted-printable 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: This helper returns the page index of the next folio in the file (ie the end of this folio, plus one). Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig Acked-by: Jeff Layton --- include/linux/pagemap.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 8eaeffccfd38..3b82252d12fc 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -406,6 +406,17 @@ static inline pgoff_t folio_index(struct folio *foli= o) return folio->index; } =20 +/** + * folio_next_index - Get the index of the next folio. + * @folio: The current folio. + * + * Return: The index of the folio which follows this folio in the file. + */ +static inline pgoff_t folio_next_index(struct folio *folio) +{ + return folio->index + folio_nr_pages(folio); +} + /** * folio_file_page - The page for a particular index. * @folio: The folio which contains this index. --=20 2.30.2