Contributors: 4
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Andreas Gruenbacher |
176 |
91.67% |
5 |
55.56% |
| Lars Ellenberg |
10 |
5.21% |
2 |
22.22% |
| Fabian Frederick |
5 |
2.60% |
1 |
11.11% |
| Christoph Böhmwalder |
1 |
0.52% |
1 |
11.11% |
| Total |
192 |
|
9 |
|
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __DRBD_INTERVAL_H
#define __DRBD_INTERVAL_H
#include <linux/types.h>
#include <linux/rbtree.h>
struct drbd_interval {
struct rb_node rb;
sector_t sector; /* start sector of the interval */
sector_t end; /* highest interval end in subtree */
unsigned int size; /* size in bytes */
unsigned int local:1 /* local or remote request? */;
unsigned int waiting:1; /* someone is waiting for completion */
unsigned int completed:1; /* this has been completed already;
* ignore for conflict detection */
/* to resume a partially successful drbd_al_begin_io_nonblock(); */
unsigned int partially_in_al_next_enr;
};
static inline void drbd_clear_interval(struct drbd_interval *i)
{
RB_CLEAR_NODE(&i->rb);
}
static inline bool drbd_interval_empty(struct drbd_interval *i)
{
return RB_EMPTY_NODE(&i->rb);
}
extern bool drbd_insert_interval(struct rb_root *, struct drbd_interval *);
extern bool drbd_contains_interval(struct rb_root *, sector_t,
struct drbd_interval *);
extern void drbd_remove_interval(struct rb_root *, struct drbd_interval *);
extern struct drbd_interval *drbd_find_overlap(struct rb_root *, sector_t,
unsigned int);
extern struct drbd_interval *drbd_next_overlap(struct drbd_interval *, sector_t,
unsigned int);
#define drbd_for_each_overlap(i, root, sector, size) \
for (i = drbd_find_overlap(root, sector, size); \
i; \
i = drbd_next_overlap(i, sector, size))
#endif /* __DRBD_INTERVAL_H */