From patchwork Fri Oct 15 13:26:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12561885 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 E6FC6C4332F for ; Fri, 15 Oct 2021 13:30:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CF09F61151 for ; Fri, 15 Oct 2021 13:30:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239817AbhJONcu (ORCPT ); Fri, 15 Oct 2021 09:32:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40754 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239467AbhJONbh (ORCPT ); Fri, 15 Oct 2021 09:31:37 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 69950C0613EE; Fri, 15 Oct 2021 06:28:02 -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=kigc0P3dFD0qfhBcYu9B5JW+OSpi6OsZX3RdDiLn0fI=; b=LCt4ntrZkKIcG3YhEqxvrAUtxT V3gC/ilrIwuQ6rMwyBixGsZPIKmIGI5iri2yGEkJgmD9XxkMSz6NT74oEfGFEA7hQHpzJFZ+3leeE NwZam6HF/cTq3dB1ZAm+ZCgCIELOEB+AphB4iZlEdL5XDFyb9fn8I0d0fPTKmXapO75K2Ek2bPdgL pBRNjtr+q3XLSUv6GekhIoXXSJ4MQIJ/ysnnyRWzSBz6l4kL803FFSlJ++APIB5pEcUU0Nl54FD2G 56wIKY5m+wHbLh1oZ/LykRavub0YOJ4kIFh5cTla1GyEz0I9addIH9LUh89uBVihmpBJnu4ErIk7G NuUPA2WQ==; 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 1mbNFW-007Dfi-S5; Fri, 15 Oct 2021 13:27:51 +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 25/30] block: add a sb_bdev_nr_blocks helper Date: Fri, 15 Oct 2021 15:26:38 +0200 Message-Id: <20211015132643.1621913-26-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: linux-btrfs@vger.kernel.org Add a helper to return the size of sb->s_bdev in sb->s_blocksize_bits based unites. Note that SECTOR_SHIFT has to be open coded due to include dependency issues for now, but I have a plan to sort that out eventually. Signed-off-by: Christoph Hellwig Reviewed-by: Kees Cook Reviewed-by: Chiatanya Kulkarni --- include/linux/genhd.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/genhd.h b/include/linux/genhd.h index f67db3c5a04b3..70b4ac47e693c 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -250,6 +250,12 @@ static inline sector_t get_capacity(struct gendisk *disk) return bdev_nr_sectors(disk->part0); } +static inline u64 sb_bdev_nr_blocks(struct super_block *sb) +{ + return bdev_nr_sectors(sb->s_bdev) >> + (sb->s_blocksize_bits - SECTOR_SHIFT); +} + int bdev_disk_changed(struct gendisk *disk, bool invalidate); void blk_drop_partitions(struct gendisk *disk);