diff --git a/fs/btrfs/block-group.h b/fs/btrfs/block-group.h
index aa176cc9a324..a8bb8429c966 100644
--- a/fs/btrfs/block-group.h
+++ b/fs/btrfs/block-group.h
@@ -246,6 +246,11 @@ struct btrfs_block_group {
 	/* Lock for free space tree operations. */
 	struct mutex free_space_lock;
 
+	/* Protected by @free_space_lock. */
+	bool using_free_space_bitmaps;
+	/* Protected by @free_space_lock. */
+	bool using_free_space_bitmaps_cached;
+
 	/*
 	 * Number of extents in this block group used for swap files.
 	 * All accesses protected by the spinlock 'lock'.
diff --git a/fs/btrfs/free-space-tree.c b/fs/btrfs/free-space-tree.c
index 222ec3132f0f..eba7f22ae49c 100644
--- a/fs/btrfs/free-space-tree.c
+++ b/fs/btrfs/free-space-tree.c
@@ -287,6 +287,8 @@ int btrfs_convert_free_space_to_bitmaps(struct btrfs_trans_handle *trans,
 	leaf = path->nodes[0];
 	flags = btrfs_free_space_flags(leaf, info);
 	flags |= BTRFS_FREE_SPACE_USING_BITMAPS;
+	block_group->using_free_space_bitmaps = true;
+	block_group->using_free_space_bitmaps_cached = true;
 	btrfs_set_free_space_flags(leaf, info, flags);
 	expected_extent_count = btrfs_free_space_extent_count(leaf, info);
 	btrfs_release_path(path);
@@ -434,6 +436,8 @@ int btrfs_convert_free_space_to_extents(struct btrfs_trans_handle *trans,
 	leaf = path->nodes[0];
 	flags = btrfs_free_space_flags(leaf, info);
 	flags &= ~BTRFS_FREE_SPACE_USING_BITMAPS;
+	block_group->using_free_space_bitmaps = false;
+	block_group->using_free_space_bitmaps_cached = true;
 	btrfs_set_free_space_flags(leaf, info, flags);
 	expected_extent_count = btrfs_free_space_extent_count(leaf, info);
 	btrfs_release_path(path);
@@ -796,13 +800,19 @@ static int using_bitmaps(struct btrfs_block_group *bg, struct btrfs_path *path)
 	struct btrfs_free_space_info *info;
 	u32 flags;
 
+	if (bg->using_free_space_bitmaps_cached)
+		return bg->using_free_space_bitmaps;
+
 	info = btrfs_search_free_space_info(NULL, bg, path, 0);
 	if (IS_ERR(info))
 		return PTR_ERR(info);
 	flags = btrfs_free_space_flags(path->nodes[0], info);
 	btrfs_release_path(path);
 
-	return (flags & BTRFS_FREE_SPACE_USING_BITMAPS) ? 1 : 0;
+	bg->using_free_space_bitmaps = (flags & BTRFS_FREE_SPACE_USING_BITMAPS);
+	bg->using_free_space_bitmaps_cached = true;
+
+	return bg->using_free_space_bitmaps;
 }
 
 EXPORT_FOR_TESTS