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/isofs/compress.c b/fs/isofs/compress.c
index 44af14b..9bb2fe3 100644
--- a/fs/isofs/compress.c
+++ b/fs/isofs/compress.c
@@ -18,6 +18,7 @@
 
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/bio.h>
 
 #include <linux/vmalloc.h>
 #include <linux/zlib.h>