From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:47247 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753967AbcJZHsF (ORCPT ); Wed, 26 Oct 2016 03:48:05 -0400 Subject: Patch "dm: mark request_queue dead before destroying the DM device" has been added to the 4.4-stable tree To: bart.vanassche@sandisk.com, gregkh@linuxfoundation.org, snitzer@redhat.com Cc: , From: Date: Wed, 26 Oct 2016 09:48:06 +0200 Message-ID: <147746808621456@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled dm: mark request_queue dead before destroying the DM device to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: dm-mark-request_queue-dead-before-destroying-the-dm-device.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 3b785fbcf81c3533772c52b717f77293099498d3 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Wed, 31 Aug 2016 15:17:49 -0700 Subject: dm: mark request_queue dead before destroying the DM device From: Bart Van Assche commit 3b785fbcf81c3533772c52b717f77293099498d3 upstream. This avoids that new requests are queued while __dm_destroy() is in progress. Signed-off-by: Bart Van Assche Signed-off-by: Mike Snitzer Signed-off-by: Greg Kroah-Hartman --- drivers/md/dm.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2869,6 +2869,7 @@ EXPORT_SYMBOL_GPL(dm_device_name); static void __dm_destroy(struct mapped_device *md, bool wait) { + struct request_queue *q = dm_get_md_queue(md); struct dm_table *map; int srcu_idx; @@ -2879,6 +2880,10 @@ static void __dm_destroy(struct mapped_d set_bit(DMF_FREEING, &md->flags); spin_unlock(&_minor_lock); + spin_lock_irq(q->queue_lock); + queue_flag_set(QUEUE_FLAG_DYING, q); + spin_unlock_irq(q->queue_lock); + if (dm_request_based(md) && md->kworker_task) flush_kthread_worker(&md->kworker); Patches currently in stable-queue which might be from bart.vanassche@sandisk.com are queue-4.4/dm-mark-request_queue-dead-before-destroying-the-dm-device.patch queue-4.4/dm-mpath-check-if-path-s-request_queue-is-dying-in-activate_path.patch