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#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 */
int local:1 /* local or remote request? */;
int waiting:1;
};
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 *);
bool drbd_contains_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 */
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