1 files changed, 3 insertions, 2 deletions

diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index ca968742c3db..a4a7a1a8da95 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -345,8 +345,9 @@ static u64 range_end(u64 start, u64 len)
         return start + len;
 }
 
-struct extent_map *__lookup_extent_mapping(struct extent_map_tree *tree,
-                                           u64 start, u64 len, int strict)
+static struct extent_map *
+__lookup_extent_mapping(struct extent_map_tree *tree,
+                        u64 start, u64 len, int strict)
 {
         struct extent_map *em;
         struct rb_node *rb_node;