1 files changed, 14 insertions, 0 deletions
diff --git a/fs/xfs/scrub/bitmap.c b/fs/xfs/scrub/bitmap.c
index bcba8c01ca18..af874c9febd5 100644
--- a/fs/xfs/scrub/bitmap.c
+++ b/fs/xfs/scrub/bitmap.c
@@ -331,3 +331,17 @@ xbitmap_empty(
 {
 	return bitmap->xb_root.rb_root.rb_node == NULL;
 }
+
+/* Count the number of set regions in this bitmap. */
+uint64_t
+xbitmap_count_set_regions(
+	struct xbitmap		*bitmap)
+{
+	struct xbitmap_node	*bn;
+	uint64_t		nr = 0;
+
+	for_each_xbitmap_extent(bn, bitmap)
+		nr++;
+
+	return nr;
+}