writeback: separate out include/linux/backing-dev-defs.h

[mirror_ubuntu-bionic-kernel.git] / drivers / md / dm.h

diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index e6e66d087b2696ae8671631978b2fffe3c80f49e..7fff744f0865b4f7a4ad4aa8965555ba22c6706e 100644 (file)
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -14,6 +14,7 @@
 #include <linux/device-mapper.h>
 #include <linux/list.h>
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/hdreg.h>
 #include <linux/completion.h>
 #include <linux/kobject.h>