[linux-block.git] / include / linux / range.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_RANGE_H
#define _LINUX_RANGE_H
#include <linux/types.h>

struct range {
	u64   start;
	u64   end;
};

static inline u64 range_len(const struct range *range)
{
	return range->end - range->start + 1;
}

/* True if r1 completely contains r2 */
static inline bool range_contains(const struct range *r1,
				  const struct range *r2)
{
	return r1->start <= r2->start && r1->end >= r2->end;
}

/* True if any part of r1 overlaps r2 */
static inline bool range_overlaps(const struct range *r1,
				  const struct range *r2)
{
	return r1->start <= r2->end && r1->end >= r2->start;
}

int add_range(struct range *range, int az, int nr_range,
		u64 start, u64 end);


int add_range_with_merge(struct range *range, int az, int nr_range,
				u64 start, u64 end);

void subtract_range(struct range *range, int az, u64 start, u64 end);

int clean_sort_range(struct range *range, int az);

void sort_range(struct range *range, int nr_range);

#define DEFINE_RANGE(_start, _end)		\
(struct range) {				\
		.start = (_start),		\
		.end = (_end),			\
	}

#endif
Commit	Line	Data
	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	#ifndef _LINUX_RANGE_H
	3	#define _LINUX_RANGE_H
	4	#include <linux/types.h>
	5
	6	struct range {
	7	u64 start;
	8	u64 end;
	9	};
	10
	11	static inline u64 range_len(const struct range *range)
	12	{
	13	return range->end - range->start + 1;
	14	}
	15
	16	/* True if r1 completely contains r2 */
	17	static inline bool range_contains(const struct range *r1,
	18	const struct range *r2)
	19	{
	20	return r1->start <= r2->start && r1->end >= r2->end;
	21	}
	22
	23	/* True if any part of r1 overlaps r2 */
	24	static inline bool range_overlaps(const struct range *r1,
	25	const struct range *r2)
	26	{
	27	return r1->start <= r2->end && r1->end >= r2->start;
	28	}
	29
	30	int add_range(struct range *range, int az, int nr_range,
	31	u64 start, u64 end);
	32
	33
	34	int add_range_with_merge(struct range *range, int az, int nr_range,
	35	u64 start, u64 end);
	36
	37	void subtract_range(struct range *range, int az, u64 start, u64 end);
	38
	39	int clean_sort_range(struct range *range, int az);
	40
	41	void sort_range(struct range *range, int nr_range);
	42
	43	#define DEFINE_RANGE(_start, _end) \
	44	(struct range) { \
	45	.start = (_start), \
	46	.end = (_end), \
	47	}
	48
	49	#endif