diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 984a1665ce1a2a9d00c015f5a2ffc6b67acffa41..45ebef8d3ea8dd95cd06b967017e3751a64550be 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1254,7 +1254,6 @@ static noinline int cow_file_range(struct btrfs_inode *inode,
 	}
 
 	alloc_hint = get_extent_allocation_hint(inode, start, num_bytes);
-	btrfs_drop_extent_map_range(inode, start, start + num_bytes - 1, false);
 
 	/*
 	 * Relocation relies on the relocated extents to have exactly the same