[PATCH] device-mapper multipath: Flush workqueue when destroying

[Alasdair G Kergon]

The multipath destructor must flush its workqueue.
Otherwise items that reference the destroyed object could remain.

From: "goggin, edward" <egoggin@xxxxxxx>
Signed-off-by: Lars Marowsky-Bree <lmb@xxxxxxx>
Signed-Off-By: Alasdair G Kergon <agk@xxxxxxxxxx>

--- diff/drivers/md/dm-mpath.c	2005-07-08 19:01:41.000000000 +0100
+++ source/drivers/md/dm-mpath.c	2005-07-08 19:11:11.000000000 +0100
@@ -752,6 +752,8 @@
 static void multipath_dtr(struct dm_target *ti)
 {
 	struct multipath *m = (struct multipath *) ti->private;
+
+	flush_workqueue(kmultipathd);
 	free_multipath(m);
 }
 
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