projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 27811d8c YL |
2 | #ifndef _LINUX_RANGE_H |
| 3 | #define _LINUX_RANGE_H | |
| a4574f63 | 4 | #include <linux/types.h> |
| 27811d8c YL |
5 | |
| 6 | struct range { | |
| 7 | u64 start; | |
| 8 | u64 end; | |
| 9 | }; | |
| 10 | ||
| a4574f63 DW |
11 | static inline u64 range_len(const struct range *range) |
| 12 | { | |
| 13 | return range->end - range->start + 1; | |
| 14 | } | |
| 15 | ||
| 93c177fd DW |
16 | static inline bool range_contains(struct range *r1, struct range *r2) |
| 17 | { | |
| 18 | return r1->start <= r2->start && r1->end >= r2->end; | |
| 19 | } | |
| 20 | ||
| 27811d8c YL |
21 | int add_range(struct range *range, int az, int nr_range, |
| 22 | u64 start, u64 end); | |
| 23 | ||
| 24 | ||
| 25 | int add_range_with_merge(struct range *range, int az, int nr_range, | |
| 26 | u64 start, u64 end); | |
| 27 | ||
| 28 | void subtract_range(struct range *range, int az, u64 start, u64 end); | |
| 29 | ||
| 30 | int clean_sort_range(struct range *range, int az); | |
| 31 | ||
| 32 | void sort_range(struct range *range, int nr_range); | |
| 33 | ||
| 9ad3f2c7 YL |
34 | #define MAX_RESOURCE ((resource_size_t)~0) |
| 35 | static inline resource_size_t cap_resource(u64 val) | |
| 36 | { | |
| 37 | if (val > MAX_RESOURCE) | |
| 38 | return MAX_RESOURCE; | |
| 39 | ||
| 40 | return val; | |
| 41 | } | |
| 27811d8c | 42 | #endif |