[PATCH] md/md-bitmap: Add missing destroy_work_on_stack()

[Yuan Can <yuancan@xxxxxxxxxx>]

This commit add missed destroy_work_on_stack() operations for
unplug_work.work in bitmap_unplug_async().

Fixes: a022325ab970 ("md/md-bitmap: add a new helper to unplug bitmap asynchrously")
Signed-off-by: Yuan Can <yuancan@xxxxxxxxxx>
---
 drivers/md/md-bitmap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 29da10e6f703..c3a42dd66ce5 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -1285,6 +1285,7 @@ static void bitmap_unplug_async(struct bitmap *bitmap)
 
 	queue_work(md_bitmap_wq, &unplug_work.work);
 	wait_for_completion(&done);
+	destroy_work_on_stack(&unplug_work.work);
 }
 
 static void bitmap_unplug(struct mddev *mddev, bool sync)
-- 
2.17.1