Patch "md/linear: shutup lockdep warnning" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

md/linear: shutup lockdep warnning

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:
md-linear-shutup-lockdep-warnning.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 <[email protected]> know about it.

From: Shaohua Li <[email protected]>
Date: Tue, 21 Feb 2017 11:57:01 -0800
Subject: md/linear: shutup lockdep warnning

From: Shaohua Li <[email protected]>

[ Upstream commit d939cdfde34f50b95254b375f498447c82190b3e ]

Commit 03a9e24(md linear: fix a race between linear_add() and linear_congested()) introduces the warnning.

---
 drivers/md/linear.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

@@ -223,7 +223,8 @@ static int linear_add(struct mddev *mdde
 	 * oldconf until no one uses it anymore.
 	 */
 	mddev_suspend(mddev);
-	oldconf = rcu_dereference(mddev->private);
+	oldconf = rcu_dereference_protected(mddev->private,
+			lockdep_is_held(&mddev->reconfig_mutex));
 	mddev->raid_disks++;
 	WARN_ONCE(mddev->raid_disks != newconf->raid_disks,
 		"copied raid_disks doesn't match mddev->raid_disks");

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/md-linear-shutup-lockdep-warnning.patch