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 4.8-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-4.8 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 3b785fbcf81c3533772c52b717f77293099498d3 Mon Sep 17 00:00:00 2001 From: Bart Van Assche <bart.vanassche@xxxxxxxxxxx> Date: Wed, 31 Aug 2016 15:17:49 -0700 Subject: dm: mark request_queue dead before destroying the DM device From: Bart Van Assche <bart.vanassche@xxxxxxxxxxx> commit 3b785fbcf81c3533772c52b717f77293099498d3 upstream. This avoids that new requests are queued while __dm_destroy() is in progress. Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx> Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/md/dm.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1873,6 +1873,7 @@ 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; @@ -1883,6 +1884,10 @@ 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@xxxxxxxxxxx are queue-4.8/ib-srp-fix-infinite-loop-when-fmr-sg.offset-0.patch queue-4.8/dm-rq-take-request_queue-lock-while-clearing-queue_flag_stopped.patch queue-4.8/ib-core-correctly-handle-rdma_rw_init_mrs-failure.patch queue-4.8/dm-mark-request_queue-dead-before-destroying-the-dm-device.patch queue-4.8/dm-mpath-check-if-path-s-request_queue-is-dying-in-activate_path.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html