scsi: use 64-bit LUNs

The SCSI standard defines 64-bit values for LUNs, and large arrays
employing large or hierarchical LUN numbers become more and more
common.

So update the linux SCSI stack to use 64-bit LUN numbers.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Ewan Milne <emilne@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index 76c05bc..f37ea6f 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -405,7 +405,7 @@
 typedef struct _VirtDevice {
 	VirtTarget		*vtarget;
 	u8			 configured_lun;
-	int			 lun;
+	u64			 lun;
 } VirtDevice;
 
 /*