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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BFEC2C77B7F for ; Fri, 5 May 2023 17:52:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233221AbjEERwy (ORCPT ); Fri, 5 May 2023 13:52:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50618 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233205AbjEERwt (ORCPT ); Fri, 5 May 2023 13:52:49 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B397F1F4BF; Fri, 5 May 2023 10:52:19 -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:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:In-Reply-To:References; bh=ifMkRij8nI82A7W3OrolnA1MZaZFLCyCuCFDtjFdqjg=; b=MHYRypZnxHGI6bvB89Ag3pPZ8M yHXC3IpteaKJGX/ZHiNjV698TU13wfd4xYcTnl7o4i55gGyms5+VTsaXdWGoCthKvx0DMFNjkyDuO h8w3+IaDhgXuqI8CLHkt8MQoc+BkSYhHp9eNQbHdfjhVyNEs3tVaS3v9XqR1fYoEAZrgeym6DiGX4 4xu5ffXD+GhRcTs5mG1jfCRI0F/qO4Te6GAD3kXwXjk5haXFyQv189iDmOJKqRlJcdwW/dW/NqVlv +sGjWUa5Ez3B1/lKvxyTZJaA6QYiQEwPsMb3IR/wF9jskxppePnf/YiAFV7NRQXEF3zjxJhEE8Y9H zPm9Ev5A==; Received: from 66-46-223-221.dedicated.allstream.net ([66.46.223.221] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1puzao-00BSwG-0H; Fri, 05 May 2023 17:51:42 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Al Viro , Christian Brauner , "Darrick J. Wong" , linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org Subject: introduce bdev holder ops and a file system shutdown method Date: Fri, 5 May 2023 13:51:23 -0400 Message-Id: <20230505175132.2236632-1-hch@lst.de> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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-fsdevel@vger.kernel.org Hi all, this series fixes the long standing problem that we never had a good way to communicate block device events to the user of the block device. It fixes this by introducing a new set of holder ops registered at blkdev_get_by_* time for the exclusive holder, and then wire that up to a shutdown super operation to report the block device remove to the file systems. Diffstat: block/bdev.c | 106 ++++++++++++++++++++---------------- block/fops.c | 2 block/genhd.c | 57 +++++++++++++------ block/ioctl.c | 3 - drivers/block/drbd/drbd_nl.c | 3 - drivers/block/pktcdvd.c | 5 + drivers/block/rnbd/rnbd-srv.c | 2 drivers/block/xen-blkback/xenbus.c | 2 drivers/block/zram/zram_drv.c | 2 drivers/md/bcache/super.c | 2 drivers/md/dm.c | 2 drivers/md/md.c | 2 drivers/mtd/devices/block2mtd.c | 4 - drivers/nvme/target/io-cmd-bdev.c | 2 drivers/s390/block/dasd_genhd.c | 2 drivers/target/target_core_iblock.c | 2 drivers/target/target_core_pscsi.c | 3 - fs/btrfs/dev-replace.c | 2 fs/btrfs/volumes.c | 6 +- fs/erofs/super.c | 2 fs/ext4/super.c | 3 - fs/f2fs/super.c | 4 - fs/jfs/jfs_logmgr.c | 2 fs/nfs/blocklayout/dev.c | 5 + fs/nilfs2/super.c | 2 fs/ocfs2/cluster/heartbeat.c | 2 fs/reiserfs/journal.c | 5 + fs/super.c | 21 ++++++- fs/xfs/xfs_fsops.c | 3 + fs/xfs/xfs_mount.h | 1 fs/xfs/xfs_super.c | 21 ++++++- include/linux/blk_types.h | 2 include/linux/blkdev.h | 9 ++- include/linux/fs.h | 1 kernel/power/swap.c | 4 - mm/swapfile.c | 3 - 36 files changed, 196 insertions(+), 103 deletions(-)