Btrfs: make things static and include the right headers

Shut up various sparse warnings about symbols that should be either
static or have their declarations in scope.

Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index dbe20d4c6ea4..f99335a999d6 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -276,6 +276,7 @@ out:
         return ret;
 }
 
+#if 0 /* this will get used when snapshot deletion is implemented */
 int btrfs_del_root_ref(struct btrfs_trans_handle *trans,
                        struct btrfs_root *tree_root,
                        u64 root_id, u8 type, u64 ref_id)
@@ -299,6 +300,7 @@ int btrfs_del_root_ref(struct btrfs_trans_handle *trans,
         btrfs_free_path(path);
         return ret;
 }
+#endif
 
 int btrfs_find_root_ref(struct btrfs_root *tree_root,
                    struct btrfs_path *path,