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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 79AEECA9EA0 for ; Mon, 4 Nov 2019 11:56:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1957F21D7F for ; Mon, 4 Nov 2019 11:56:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mykernel.net header.i=cgxu519@mykernel.net header.b="gxwq13VV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728848AbfKDL4N (ORCPT ); Mon, 4 Nov 2019 06:56:13 -0500 Received: from sender3-of-o52.zoho.com.cn ([124.251.121.247]:21922 "EHLO sender2.zoho.com.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727663AbfKDL4N (ORCPT ); Mon, 4 Nov 2019 06:56:13 -0500 X-Greylist: delayed 906 seconds by postgrey-1.27 at vger.kernel.org; Mon, 04 Nov 2019 06:56:09 EST ARC-Seal: i=1; a=rsa-sha256; t=1572867659; cv=none; d=zoho.com.cn; s=zohoarc; b=rY0x6zTB1/c6EuqPvJdRCRxK2Zmh5ahjD6H0UhscfMqrQgG/JnFwr/GD1YbAEUEYWSTYscE/j4tV/afSiL3HGYLWZVU4EtP9oPH4FfoWge1R2VCn/+hxyAhVUVCOTVgp/07DZP8VYCNdcfTwYIC45tcfApYyfN+ExR38mnvPzG8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com.cn; s=zohoarc; t=1572867659; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:MIME-Version:Message-ID:Subject:To; bh=m6R7At4+C/REK1yLQtQ2YRUko1s/FbpG1OERsvSbHl0=; b=JszRGn+O6CaXfIjFC1tCBx04qZqb7g1MSdQVik8EunfaP5Uti7c9V2jNAasnbsxxUjecoGNe+yg9cltkb8ckhCWpxMLrM1TypURh5ZUZVydQxGM7hwSzSqVKzyvq4Z9wBqKMZ9vYsAEbdBrtvRQKN5/BZ2fpi+ctcbJpuTB431s= ARC-Authentication-Results: i=1; mx.zoho.com.cn; dkim=pass header.i=mykernel.net; spf=pass smtp.mailfrom=cgxu519@mykernel.net; dmarc=pass header.from= header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1572867659; s=zohomail; d=mykernel.net; i=cgxu519@mykernel.net; h=From:To:Cc:Message-ID:Subject:Date:MIME-Version:Content-Transfer-Encoding:Content-Type; l=1133; bh=m6R7At4+C/REK1yLQtQ2YRUko1s/FbpG1OERsvSbHl0=; b=gxwq13VVxOr6+wye9SLbLj4GowWQl4UTkyAF74g2WI6Fqr53C0ZWAnl/G4Fpkxbz seGIOXtzs5516O3kbs9YGYU5EaFazN6p37JToyk+7I+vKNyj6pntrWFuhQ/3rvy6BOH r9scbX+HDuw/FxaWNJctJL+L0E3Dz7ekv/Y5ljUA= Received: from localhost.localdomain (218.18.229.179 [218.18.229.179]) by mx.zoho.com.cn with SMTPS id 15728676574231004.4041585412566; Mon, 4 Nov 2019 19:40:57 +0800 (CST) From: Chengguang Xu To: jack@suse.com Cc: linux-ext4@vger.kernel.org, Chengguang Xu Message-ID: <20191104114036.9893-1-cgxu519@mykernel.net> Subject: [PATCH 1/5] ext2: introduce new helper ext2_group_last_block_no() Date: Mon, 4 Nov 2019 19:40:32 +0800 X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoCNMailClient: External Content-Type: text/plain; charset=utf8 Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Introduce new helper ext2_group_last_block_no() to calculate last block num for specific block group, we can replace open coded logic by calling this common helper. Signed-off-by: Chengguang Xu --- fs/ext2/ext2.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h index 10ab238de9a6..8178bd38a9d6 100644 --- a/fs/ext2/ext2.h +++ b/fs/ext2/ext2.h @@ -813,6 +813,18 @@ ext2_group_first_block_no(struct super_block *sb, unsi= gned long group_no) =09=09le32_to_cpu(EXT2_SB(sb)->s_es->s_first_data_block); } =20 +static inline ext2_fsblk_t +ext2_group_last_block_no(struct super_block *sb, unsigned long group_no) +{ +=09struct ext2_sb_info *sbi =3D EXT2_SB(sb); + +=09if (group_no =3D=3D sbi->s_groups_count - 1) +=09=09return le32_to_cpu(sbi->s_es->s_blocks_count) - 1; +=09else +=09=09return ext2_group_first_block_no(sb, group_no) + +=09=09=09EXT2_BLOCKS_PER_GROUP(sb) - 1; +} + #define ext2_set_bit=09__test_and_set_bit_le #define ext2_clear_bit=09__test_and_clear_bit_le #define ext2_test_bit=09test_bit_le --=20 2.20.1