From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Fri, 28 Oct 2016 16:27:58 +0000 (-0700)
Subject: Merge tag 'dm-4.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device... 
X-Git-Tag: v4.9-rc3~22
X-Git-Url: http://git.cascardo.info/?p=cascardo%2Flinux.git;a=commitdiff_plain;h=e0f3e6a7ccc002be056b6a21768fceee0d44941e

Merge tag 'dm-4.9-fixes' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - a couple DM raid and DM mirror fixes

 - a couple .request_fn request-based DM NULL pointer fixes

 - a fix for a DM target reference count leak, on target load error,
   that prevented associated DM target kernel module(s) from being
   removed

* tag 'dm-4.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm table: fix missing dm_put_target_type() in dm_table_add_target()
  dm rq: clear kworker_task if kthread_run() returned an error
  dm: free io_barrier after blk_cleanup_queue call
  dm raid: fix activation of existing raid4/10 devices
  dm mirror: use all available legs on multiple failures
  dm mirror: fix read error on recovery after default leg failure
  dm raid: fix compat_features validation
---

e0f3e6a7ccc002be056b6a21768fceee0d44941e
diff --cc drivers/md/dm-rq.c
index dc75bea0d541,63e43f261cce..1d0d2adc050a
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@@ -853,11 -853,14 +853,14 @@@ int dm_old_init_request_queue(struct ma
  	blk_queue_prep_rq(md->queue, dm_old_prep_fn);
  
  	/* Initialize the request-based DM worker thread */
 -	init_kthread_worker(&md->kworker);
 +	kthread_init_worker(&md->kworker);
  	md->kworker_task = kthread_run(kthread_worker_fn, &md->kworker,
  				       "kdmwork-%s", dm_device_name(md));
- 	if (IS_ERR(md->kworker_task))
- 		return PTR_ERR(md->kworker_task);
+ 	if (IS_ERR(md->kworker_task)) {
+ 		int error = PTR_ERR(md->kworker_task);
+ 		md->kworker_task = NULL;
+ 		return error;
+ 	}
  
  	elv_register_queue(md->queue);