From 52b09914af86fa3e728175c1125c91520e437b2f Mon Sep 17 00:00:00 2001
From: Mike Snitzer <snitzer@redhat.com>
Date: Mon, 23 Feb 2015 16:36:41 -0500
Subject: dm: remove unnecessary wrapper around blk_lld_busy

There is no need for DM to export a wrapper around the already exported
blk_lld_busy().

Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index d376dc8..add6391 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -1627,7 +1627,7 @@ static int __pgpath_busy(struct pgpath *pgpath)
 {
 	struct request_queue *q = bdev_get_queue(pgpath->path.dev->bdev);
 
-	return dm_underlying_device_busy(q);
+	return blk_lld_busy(q);
 }
 
 /*
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 0e5f344..e7095eb 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2006,12 +2006,6 @@ out:
 	dm_put_live_table(md, srcu_idx);
 }
 
-int dm_underlying_device_busy(struct request_queue *q)
-{
-	return blk_lld_busy(q);
-}
-EXPORT_SYMBOL_GPL(dm_underlying_device_busy);
-
 static int dm_lld_busy(struct request_queue *q)
 {
 	int r;
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index fd23978..51cc1de 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -605,9 +605,4 @@ static inline unsigned long to_bytes(sector_t n)
 	return (n << SECTOR_SHIFT);
 }
 
-/*-----------------------------------------------------------------
- * Helper for block layer and dm core operations
- *---------------------------------------------------------------*/
-int dm_underlying_device_busy(struct request_queue *q);
-
 #endif	/* _LINUX_DEVICE_MAPPER_H */
-- 
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