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=-11.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 C7DD6C433E5 for ; Tue, 30 Mar 2021 16:18:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 96968619D1 for ; Tue, 30 Mar 2021 16:18:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232085AbhC3QSI (ORCPT ); Tue, 30 Mar 2021 12:18:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230243AbhC3QRl (ORCPT ); Tue, 30 Mar 2021 12:17:41 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A35F7C061574; Tue, 30 Mar 2021 09:17:41 -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=wBx0Ov1qFfoFIbPnFM3+4UcF+elN8xz2+Stq7Mk5rxs=; b=IeZ/p9qlHvFgAXTMKXQpI6qkqk 8NrZ5THtl63tPfePZ3Z4LeuVPrFkBtL5XxQwNeKa7v3BcJgr7C6TAWQglZCdYWW3ERk3yDFbR1l1U 7e4ZPX2d6MfSTXzvW3wX5txuizpEfbE1pqRPh1W2V9lFoRG9doNXioW56gGx9rYmqR5QXI3b35XNZ Ywkl1vgJXGBhl8K2ZIRw/SXYZR+HcrxOI4NrbS+f2/TzR8NQMjYTwVMXMh6p9yjA3SloIT2d2jmGy sTa3f+EEHyiXrYWvQ4oF2e5yD57iqb4A9fA1ybzu40Pe+8zvtQLxLxAbjAeD/n4y23iqCowF8Koue BnGv5MNA==; Received: from [185.12.131.45] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRH3a-008aJf-Ps; Tue, 30 Mar 2021 16:17:31 +0000 From: Christoph Hellwig To: Jens Axboe , Song Liu Cc: Konrad Rzeszutek Wilk , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Minchan Kim , Nitin Gupta , Stefan Haberland , Jan Hoeppner , linux-block@vger.kernel.org, linux-raid@vger.kernel.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org Subject: move bd_mutex to the gendisk Date: Tue, 30 Mar 2021 18:17:12 +0200 Message-Id: <20210330161727.2297292-1-hch@lst.de> X-Mailer: git-send-email 2.30.1 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-s390@vger.kernel.org Hi all, this series first cleans up gendisk allocation in the md driver to remove the ERESTARTSYS hack in blkdev_get, then further refactors blkdev_get and then finally moves bd_mutex into the gendisk as having separate locks for the whole device vs partitions just complicates locking in places that add an remove partitions a lot. Note that this series sits on top of the for-5.13/drivers branch as that has the ->revalidate_disk cleanup. Diffstat: Documentation/filesystems/locking.rst | 2 block/genhd.c | 55 +++----- block/partitions/core.c | 45 +++---- drivers/block/loop.c | 14 +- drivers/block/xen-blkfront.c | 8 - drivers/block/zram/zram_drv.c | 18 +- drivers/block/zram/zram_drv.h | 2 drivers/md/md.c | 204 ++++++++++++++++----------------- drivers/md/md.h | 6 drivers/s390/block/dasd_genhd.c | 8 - drivers/scsi/sd.c | 4 fs/block_dev.c | 208 +++++++++++++++------------------- fs/btrfs/volumes.c | 2 fs/super.c | 8 - include/linux/blk_types.h | 4 include/linux/genhd.h | 6 init/do_mounts.c | 10 - 17 files changed, 279 insertions(+), 325 deletions(-)