diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 8da837b..df76291 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -584,7 +584,8 @@
 		if (bitmap_bh == NULL)
 			continue;
 
-		x = ext4_count_free(bitmap_bh, sb->s_blocksize);
+		x = ext4_count_free(bitmap_bh->b_data,
+				    EXT4_BLOCKS_PER_GROUP(sb) / 8);
 		printk(KERN_DEBUG "group %u: stored = %d, counted = %u\n",
 			i, ext4_free_group_clusters(sb, gdp), x);
 		bitmap_count += x;