1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2018 Oracle.  All Rights Reserved.
4  * Author: Darrick J. Wong <darrick.wong@oracle.com>
5  */
6 #ifndef __XFS_SCRUB_BITMAP_H__
7 #define __XFS_SCRUB_BITMAP_H__
8 
9 struct xbitmap_range {
10 	struct list_head	list;
11 	uint64_t		start;
12 	uint64_t		len;
13 };
14 
15 struct xbitmap {
16 	struct list_head	list;
17 };
18 
19 void xbitmap_init(struct xbitmap *bitmap);
20 void xbitmap_destroy(struct xbitmap *bitmap);
21 
22 #define for_each_xbitmap_extent(bex, n, bitmap) \
23 	list_for_each_entry_safe((bex), (n), &(bitmap)->list, list)
24 
25 #define for_each_xbitmap_block(b, bex, n, bitmap) \
26 	list_for_each_entry_safe((bex), (n), &(bitmap)->list, list) \
27 		for ((b) = (bex)->start; (b) < (bex)->start + (bex)->len; (b)++)
28 
29 int xbitmap_set(struct xbitmap *bitmap, uint64_t start, uint64_t len);
30 int xbitmap_disunion(struct xbitmap *bitmap, struct xbitmap *sub);
31 int xbitmap_set_btcur_path(struct xbitmap *bitmap,
32 		struct xfs_btree_cur *cur);
33 int xbitmap_set_btblocks(struct xbitmap *bitmap,
34 		struct xfs_btree_cur *cur);
35 uint64_t xbitmap_hweight(struct xbitmap *bitmap);
36 
37 #endif	/* __XFS_SCRUB_BITMAP_H__ */
38