1 files changed, 37 insertions, 0 deletions
diff --git a/fs/xfs/scrub/bitmap.h b/fs/xfs/scrub/bitmap.h
new file mode 100644
index 000000000..900646b72
--- /dev/null
+++ b/fs/xfs/scrub/bitmap.h
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Oracle.  All Rights Reserved.
+ * Author: Darrick J. Wong <darrick.wong@oracle.com>
+ */
+#ifndef __XFS_SCRUB_BITMAP_H__
+#define __XFS_SCRUB_BITMAP_H__
+
+struct xbitmap_range {
+	struct list_head	list;
+	uint64_t		start;
+	uint64_t		len;
+};
+
+struct xbitmap {
+	struct list_head	list;
+};
+
+void xbitmap_init(struct xbitmap *bitmap);
+void xbitmap_destroy(struct xbitmap *bitmap);
+
+#define for_each_xbitmap_extent(bex, n, bitmap) \
+	list_for_each_entry_safe((bex), (n), &(bitmap)->list, list)
+
+#define for_each_xbitmap_block(b, bex, n, bitmap) \
+	list_for_each_entry_safe((bex), (n), &(bitmap)->list, list) \
+		for ((b) = (bex)->start; (b) < (bex)->start + (bex)->len; (b)++)
+
+int xbitmap_set(struct xbitmap *bitmap, uint64_t start, uint64_t len);
+int xbitmap_disunion(struct xbitmap *bitmap, struct xbitmap *sub);
+int xbitmap_set_btcur_path(struct xbitmap *bitmap,
+		struct xfs_btree_cur *cur);
+int xbitmap_set_btblocks(struct xbitmap *bitmap,
+		struct xfs_btree_cur *cur);
+uint64_t xbitmap_hweight(struct xbitmap *bitmap);
+
+#endif	/* __XFS_SCRUB_BITMAP_H__ */