From patchwork Fri Oct 15 13:26:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12561687 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9A2BC4321E for ; Fri, 15 Oct 2021 13:28:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 97258611EE for ; Fri, 15 Oct 2021 13:28:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239717AbhJONbC (ORCPT ); Fri, 15 Oct 2021 09:31:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40704 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239639AbhJONaD (ORCPT ); Fri, 15 Oct 2021 09:30:03 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8DE5EC061762; Fri, 15 Oct 2021 06:27:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=l6H+xWHI2buGGvGsIZb/A3dvICuo/7ewDE4S1/fqN/c=; b=PZKuiIv/qJljrkxnxnKD+h7ASp t1DY8S37VxTjS5GVdTkbLu2mMuhS6r19M9P18jq5XWRRb/cDXTKEhdKZpbi6BYfjD+qVUx98A7XOx dOceraYZgfKi6i/cyCWYpqxoLOymY2Qbs01Ah8Y+ZKKT9clwZtoud58n6FEGbl464S2EYE1cDTPWl 4k2uxiZ1Ufz8ImJJ9J6PAiEaI3OVRm7cm1hnYyVq9H/QoM0+iG2ltlqYPdw3Ica7l/zAFYvuR19Li 1xrYDx5RlNaWSbE2njYmuPk8oSACh0P63MHKOWIgGLbA1JAiNrz3A7Mcdmlh/tLrvL90Jz6F3+CFW fbcCjk3g==; Received: from [2001:4bb8:199:73c5:ddfe:9587:819b:83b0] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mbNF4-007D8w-Ce; Fri, 15 Oct 2021 13:27:22 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Coly Li , Mike Snitzer , Song Liu , David Sterba , Josef Bacik , "Theodore Ts'o" , OGAWA Hirofumi , Dave Kleikamp , Ryusuke Konishi , Anton Altaparmakov , Konstantin Komarov , Kees Cook , Phillip Lougher , Jan Kara , linux-block@vger.kernel.org, dm-devel@redhat.com, drbd-dev@lists.linbit.com, linux-bcache@vger.kernel.org, linux-raid@vger.kernel.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, jfs-discussion@lists.sourceforge.net, linux-nfs@vger.kernel.org, linux-nilfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, ntfs3@lists.linux.dev, reiserfs-devel@vger.kernel.org Subject: [PATCH 14/30] fat: use bdev_nr_sectors instead of open coding it Date: Fri, 15 Oct 2021 15:26:27 +0200 Message-Id: <20211015132643.1621913-15-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211015132643.1621913-1-hch@lst.de> References: <20211015132643.1621913-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: target-devel@vger.kernel.org Use the proper helper to read the block device size. Signed-off-by: Christoph Hellwig Reviewed-by: Kees Cook --- fs/fat/inode.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/fs/fat/inode.c b/fs/fat/inode.c index de0c9b013a851..9f3cd03668adc 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -1536,14 +1536,11 @@ static int fat_read_static_bpb(struct super_block *sb, struct fat_bios_param_block *bpb) { static const char *notdos1x = "This doesn't look like a DOS 1.x volume"; - + sector_t bd_sects = bdev_nr_sectors(sb->s_bdev); struct fat_floppy_defaults *fdefaults = NULL; int error = -EINVAL; - sector_t bd_sects; unsigned i; - bd_sects = i_size_read(sb->s_bdev->bd_inode) / SECTOR_SIZE; - /* 16-bit DOS 1.x reliably wrote bootstrap short-jmp code */ if (b->ignored[0] != 0xeb || b->ignored[2] != 0x90) { if (!silent)