block,fs: untangle fs.h and blk_types.h

Nothing in fs.h should require blk_types.h to be included.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c
index a97e352..0037aea 100644
--- a/fs/reiserfs/stree.c
+++ b/fs/reiserfs/stree.c
@@ -11,6 +11,7 @@
 #include <linux/time.h>
 #include <linux/string.h>
 #include <linux/pagemap.h>
+#include <linux/bio.h>
 #include "reiserfs.h"
 #include <linux/buffer_head.h>
 #include <linux/quotaops.h>