1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2018-2023 Oracle. All Rights Reserved.
* Author: Darrick J. Wong <djwong@kernel.org>
*/
#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);
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);
/*
* Return codes for the bitmap iterator functions are 0 to continue iterating,
* and non-zero to stop iterating. Any non-zero value will be passed up to the
* iteration caller. The special value -ECANCELED can be used to stop
* iteration, because neither bitmap iterator ever generates that error code on
* its own. Callers must not modify the bitmap while walking it.
*/
typedef int (*xbitmap_walk_fn)(uint64_t start, uint64_t len, void *priv);
int xbitmap_walk(struct xbitmap *bitmap, xbitmap_walk_fn fn,
void *priv);
typedef int (*xbitmap_walk_bits_fn)(uint64_t bit, void *priv);
int xbitmap_walk_bits(struct xbitmap *bitmap, xbitmap_walk_bits_fn fn,
void *priv);
#endif /* __XFS_SCRUB_BITMAP_H__ */
|
