block: move the part_stat* helpers from genhd.h to a new header
These macros are just used by a few files. Move them out of genhd.h,
which is included everywhere into a new standalone header.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index b7f605c..0dc019d 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -22,6 +22,7 @@
#include <linux/random.h>
#include <linux/string.h>
#include <linux/scatterlist.h>
+#include <linux/part_stat.h>
#include "drbd_int.h"
#include "drbd_protocol.h"
