cfq-iosched: move IO controller declerations to a header file
They should not be declared inside some other file that's not related
to CFQ.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 179ddfa..73a5525 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -14,9 +14,7 @@
#include <linux/seq_file.h>
#include <linux/kdev_t.h>
#include "blk-cgroup.h"
-
-extern void cfq_unlink_blkio_group(void *, struct blkio_group *);
-extern void cfq_update_blkio_group_weight(struct blkio_group *, unsigned int);
+#include "cfq-iosched.h"
struct blkio_cgroup blkio_root_cgroup = { .weight = 2*BLKIO_WEIGHT_DEFAULT };