md: mark md_kick_rdev_from_array static

md_kick_rdev_from_array is only used in md.c, so unexport it and mark
the symbol static.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Song Liu <song@kernel.org>

drivers/md/md.c

@@ -2508,12 +2508,11 @@ static void export_rdev(struct md_rdev *rdev)
 	kobject_put(&rdev->kobj);
 }
 
-void md_kick_rdev_from_array(struct md_rdev *rdev)
+static void md_kick_rdev_from_array(struct md_rdev *rdev)
 {
 	unbind_rdev_from_array(rdev);
 	export_rdev(rdev);
 }
-EXPORT_SYMBOL_GPL(md_kick_rdev_from_array);
 
 static void export_array(struct mddev *mddev)
 {

drivers/md/md.h

@@ -782,7 +782,6 @@ extern void mddev_resume(struct mddev *mddev);
 
 extern void md_reload_sb(struct mddev *mddev, int raid_disk);
 extern void md_update_sb(struct mddev *mddev, int force);
-extern void md_kick_rdev_from_array(struct md_rdev * rdev);
 extern void mddev_create_serial_pool(struct mddev *mddev, struct md_rdev *rdev,
 				     bool is_suspend);
 extern void mddev_destroy_serial_pool(struct mddev *mddev, struct md_rdev *rdev,