From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on archive.lwn.net X-Spam-Level: X-Spam-Status: No, score=-5.7 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by archive.lwn.net (Postfix) with ESMTP id 74D1B7D90F for ; Fri, 25 Oct 2019 11:21:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732552AbfJYLVu (ORCPT ); Fri, 25 Oct 2019 07:21:50 -0400 Received: from mx2.suse.de ([195.135.220.15]:56776 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726298AbfJYLVu (ORCPT ); Fri, 25 Oct 2019 07:21:50 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 5885EB19E; Fri, 25 Oct 2019 11:21:48 +0000 (UTC) From: Michal Suchanek To: linux-scsi@vger.kernel.org Cc: Michal Suchanek , Christoph Hellwig , Matthew Wilcox , "Ewan D. Milne" , Jonathan Corbet , Jens Axboe , "James E.J. Bottomley" , "Martin K. Petersen" , Alexander Viro , "J. Bruce Fields" , Mauro Carvalho Chehab , Eric Biggers , Benjamin Coddington , Hannes Reinecke , Omar Sandoval , Ming Lei , Damien Le Moal , Bart Van Assche , Tejun Heo , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH v3 0/7] Fix cdrom autoclose Date: Fri, 25 Oct 2019 13:21:37 +0200 Message-Id: X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org Hello, there is cdrom autoclose feature that is supposed to close the tray, wait for the disc to become ready, and then open the device. This used to work in ancient times. Then in old times there was a hack in util-linux which worked around the breakage which probably resulted from switching to scsi emulation. Currently util-linux maintainer refuses to merge another hack on the basis that kernel still has the feature so it should be fixed there. The code needs not be replicated in every userspace utility like mount or dd which has no business knowing which devices are CD-roms and where the autoclose setting is in the kernel. Link: https://lore.kernel.org/lkml/cover.1513263482.git.msuchanek@suse.de/ Link: https://lore.kernel.org/lkml/cover.1571834862.git.msuchanek@suse.de/ v3: - change the VMware workaround to use blacklist flag - use exported function instead of ioctl Michal Suchanek (7): cdrom: add poll_event_interruptible cdrom: factor out common open_for_* code cdrom: wait for the tray to close cdrom: export autoclose logic as a separate function bdev: add open_finish. scsi: blacklist: add VMware ESXi cdrom - broken tray emulation. scsi: sr: wait for the medium to become ready Documentation/filesystems/locking.rst | 2 + drivers/cdrom/cdrom.c | 192 ++++++++++++++------------ drivers/scsi/scsi_devinfo.c | 15 +- drivers/scsi/sr.c | 60 ++++++-- fs/block_dev.c | 21 ++- include/linux/blkdev.h | 1 + include/linux/cdrom.h | 1 + include/scsi/scsi_devinfo.h | 7 +- 8 files changed, 191 insertions(+), 108 deletions(-) -- 2.23.0