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-rw-r--r--fs/xfs/scrub/bitmap.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/xfs/scrub/bitmap.c b/fs/xfs/scrub/bitmap.c
index 1449bb5262..0cb8d43912 100644
--- a/fs/xfs/scrub/bitmap.c
+++ b/fs/xfs/scrub/bitmap.c
@@ -566,3 +566,17 @@ xbitmap32_test(
*len = bn->bn_start - start;
return false;
}
+
+/* Count the number of set regions in this bitmap. */
+uint32_t
+xbitmap32_count_set_regions(
+ struct xbitmap32 *bitmap)
+{
+ struct xbitmap32_node *bn;
+ uint32_t nr = 0;
+
+ for_each_xbitmap32_extent(bn, bitmap)
+ nr++;
+
+ return nr;
+}