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// 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 {
struct rb_root_cached xb_root;
};
void xbitmap_init(struct xbitmap *bitmap);
void xbitmap_destroy(struct xbitmap *bitmap);
int xbitmap_clear(struct xbitmap *bitmap, uint64_t start, uint64_t len);
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);
bool xbitmap_empty(struct xbitmap *bitmap);
#endif /* __XFS_SCRUB_BITMAP_H__ */
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