32 lines
851 B
C
32 lines
851 B
C
|
#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 */
|
||
|
|
unsigned int size; /* size in bytes */
|
||
|
|
sector_t end; /* highest interval end in subtree */
|
||
|
|
};
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool drbd_insert_interval(struct rb_root *, struct drbd_interval *);
|
||
|
|
struct drbd_interval *drbd_find_interval(struct rb_root *, sector_t,
|
||
|
|
struct drbd_interval *);
|
||
|
|
void drbd_remove_interval(struct rb_root *, struct drbd_interval *);
|
||
|
|
struct drbd_interval *drbd_find_overlap(struct rb_root *, sector_t,
|
||
|
|
unsigned int);
|
||
|
|
|
||
|
|
#endif /* __DRBD_INTERVAL_H */
|