rbd: move rbd_dev_refresh() definition

Move rbd_dev_refresh() definition further down to avoid having to
move struct parent_image_info definition in the next commit.  This
spares some forward declarations too.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Dongsheng Yang <dongsheng.yang@easystack.cn>

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 3de11f0..5da001f 100644 (file)
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -633,8 +633,6 @@ static void rbd_dev_remove_parent(struct rbd_device *rbd_dev);
 
 static int rbd_dev_refresh(struct rbd_device *rbd_dev);
 static int rbd_dev_v2_header_onetime(struct rbd_device *rbd_dev);
-static int rbd_dev_header_info(struct rbd_device *rbd_dev);
-static int rbd_dev_v2_parent_info(struct rbd_device *rbd_dev);
 static const char *rbd_dev_v2_snap_name(struct rbd_device *rbd_dev,
                                        u64 snap_id);
 static int _rbd_dev_v2_snap_size(struct rbd_device *rbd_dev, u64 snap_id,
@@ -4931,39 +4929,6 @@ static void rbd_dev_update_size(struct rbd_device *rbd_dev)
        }
 }
 
-static int rbd_dev_refresh(struct rbd_device *rbd_dev)
-{
-       u64 mapping_size;
-       int ret;
-
-       down_write(&rbd_dev->header_rwsem);
-       mapping_size = rbd_dev->mapping.size;
-
-       ret = rbd_dev_header_info(rbd_dev);
-       if (ret)
-               goto out;
-
-       /*
-        * If there is a parent, see if it has disappeared due to the
-        * mapped image getting flattened.
-        */
-       if (rbd_dev->parent) {
-               ret = rbd_dev_v2_parent_info(rbd_dev);
-               if (ret)
-                       goto out;
-       }
-
-       rbd_assert(!rbd_is_snap(rbd_dev));
-       rbd_dev->mapping.size = rbd_dev->header.image_size;
-
-out:
-       up_write(&rbd_dev->header_rwsem);
-       if (!ret && mapping_size != rbd_dev->mapping.size)
-               rbd_dev_update_size(rbd_dev);
-
-       return ret;
-}
-
 static const struct blk_mq_ops rbd_mq_ops = {
        .queue_rq       = rbd_queue_rq,
 };
@@ -7043,6 +7008,39 @@ err_out_format:
        return ret;
 }
 
+static int rbd_dev_refresh(struct rbd_device *rbd_dev)
+{
+       u64 mapping_size;
+       int ret;
+
+       down_write(&rbd_dev->header_rwsem);
+       mapping_size = rbd_dev->mapping.size;
+
+       ret = rbd_dev_header_info(rbd_dev);
+       if (ret)
+               goto out;
+
+       /*
+        * If there is a parent, see if it has disappeared due to the
+        * mapped image getting flattened.
+        */
+       if (rbd_dev->parent) {
+               ret = rbd_dev_v2_parent_info(rbd_dev);
+               if (ret)
+                       goto out;
+       }
+
+       rbd_assert(!rbd_is_snap(rbd_dev));
+       rbd_dev->mapping.size = rbd_dev->header.image_size;
+
+out:
+       up_write(&rbd_dev->header_rwsem);
+       if (!ret && mapping_size != rbd_dev->mapping.size)
+               rbd_dev_update_size(rbd_dev);
+
+       return ret;
+}
+
 static ssize_t do_rbd_add(const char *buf, size_t count)
 {
        struct rbd_device *rbd_dev = NULL;